WO2006006650A1 - 発熱体及び発熱体の製造方法 - Google Patents
発熱体及び発熱体の製造方法 Download PDFInfo
- Publication number
- WO2006006650A1 WO2006006650A1 PCT/JP2005/013003 JP2005013003W WO2006006650A1 WO 2006006650 A1 WO2006006650 A1 WO 2006006650A1 JP 2005013003 W JP2005013003 W JP 2005013003W WO 2006006650 A1 WO2006006650 A1 WO 2006006650A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat
- heating element
- exothermic composition
- exothermic
- molded body
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
- A61F7/032—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction using oxygen from the air, e.g. pocket-stoves
- A61F7/034—Flameless
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/16—Materials undergoing chemical reactions when used
- C09K5/18—Non-reversible chemical reactions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0098—Heating or cooling appliances for medical or therapeutic treatment of the human body ways of manufacturing heating or cooling devices for therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0268—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier
Definitions
- the present invention is capable of heat-sealing without generating wrinkles by temporarily sealing a base material and a covering material with a pressure-sensitive adhesive layer and then heat-sealing.
- the present invention relates to a heating element and a method for manufacturing the same, which greatly improves productivity and has no seal failure!
- a heating element in which a heat generating composition is sealed in a bag (or sheet) that has air permeability on at least one side, and a pressure-sensitive adhesive layer on one side of the heating element can be applied to a human body.
- V loosely used, thrown away, filtered, and hot compresses, such as warming means and medical hot packs, and adhesive layers of these hot compresses and patches are transdermally absorbed.
- a drug containing or carrying a sex drug and used for a so-called transdermal absorption system has also been proposed.
- this heating element As a method for producing this heating element, generally, after a heating composition is dropped on a predetermined castle on the upper surface of a base material having air permeability or air tightness, a covering material having air tightness or air permeability is covered, and thereafter, The heat seal is performed over the entire periphery of the periphery of the substrate and the periphery of the covering material. That is, the periphery of the base material and the covering material is heat sealed over the entire circumference.
- a hot melt adhesive layer may be laminated on either the base material or the coating material, and this hot melt adhesive layer may be interposed.
- a heating composition is laminated on a predetermined castle on the top surface of a base material having air permeability or air tightness, and then a covering material having air tightness or air permeability is covered. Further, thereafter, the outer peripheral edge portion of the base material and the outer peripheral edge portion of the covering material are crimped and sealed through the adhesive layer over the entire circumference. That is, the outer peripheral edge portion of the base material and the covering material is pressure-bonded (adhesive seal) over the entire periphery.
- the heating element manufactured in this way suppresses the exothermic reaction until use.
- it is sealed and stored in an airtight outer bag for distribution.
- Such a conventional heating element has the following problems when the base and the outer peripheral edge of the covering material are heat-sealed over the entire circumference.
- the synthetic resin film or film constituting the base material or the covering material uses a hot-melt adhesive layer previously formed on at least one surface of the base material or the covering material, and the base material and the peripheral portion of the covering material are heat-melted. If heat sealing is performed by heat bonding, the exothermic composition does not enter the heat sealing part! / ⁇ After melting the synthetic resin film or hot melt adhesive, heat sealing is performed. Since it is necessary to perform the bonding securely, there is a limit to high-speed operation and productivity is lowered.
- the sealing can be easily performed, and the sealing portion, that is, the entire peripheral portion of the heating element is flexible.
- the adhesive strength of the adhesive seal decreases depending on the application, heat generation due to separation of the seal becomes unstable, and there is a risk of scalding, and its application is limited. Even when a temperature lower than the melting point of the pressure-sensitive adhesive layer was partially applied and the heat treatment seal was applied, the effect was accompanied by a problem that the seal was released too much, resulting in a poor seal and abnormal heat generation.
- the present invention solves the above technical problem and forms a temporary attachment portion by temporary attachment with a pressure-sensitive adhesive layer between a base material and a heat-generating composition molded body and a covering material, and then heat-seals, thereby forming a single layer of the line.
- the high-speed heat treatment has been achieved to greatly improve productivity, and the heat generation group when joining the base material to the coating material
- An object of the present invention is to provide a heating element that can be heat-sealed without misalignment of the molded product and has no sealing failure.
- the heating element of the present invention is an exothermic material obtained by molding a heating composition having a pyrogen, a carbon component, a reaction accelerator and water as essential components and having a mobile water value of 0.01 to 20.
- the base material and the covering material are temporarily attached by an adhesive layer, and the temporarily attached portion is heat-sealed by the heat sealing layer of the base material and Z or the covering material, and the heat seal portion has The adhesive layer component and the heat seal layer component coexist, and the heat seal portion has a 60 ° C seal strength of 0.8 kgZ25 mm or more.
- the heating element according to claim 2 is the heating element according to claim 1, characterized in that at least a part of the heat seal part has a region where the air vent part is heat sealed.
- the heating element according to claim 3 is the heating element according to claim 1, wherein the adhesive layer is formed of a hot-melt adhesive.
- the heating element according to claim 4 is the heating element according to claim 1, wherein the total thickness of the heat seal layer is equal to or greater than the thickness of the adhesive layer.
- the heating element according to claim 5 is the heating element according to claim 1, wherein the thickness of the adhesive layer is 0.1 to: LOO / zm.
- the heating element according to claim 6 is the heating element according to claim 1, wherein the adhesive layer has a gap.
- the heating element according to claim 7 is the heating element according to claim 1, wherein the heat seal portion includes a mixed portion of the component of the heat seal layer and the component of the adhesive layer.
- the heating element according to claim 8 is the heating element according to claim 1, wherein the base material and the covering material are formed of an extensible material.
- the heating element according to claim 9 is the heating element according to claim 1, wherein the heating element is the heating element.
- the composition molded body is characterized in that it is divided into a plurality of sections by a section that is a heat seal section.
- the heating element according to claim 10 is the heating element according to claim 1, wherein the heating material of the heating composition is iron powder, and the iron powder has an iron oxide film.
- the heating element according to claim 11 is the heating element according to claim 1, characterized in that the exothermic composition molded body is compressed.
- the heating element according to claim 12 is the heating element according to claim 1, wherein after the heat sealing, at least a part of the exothermic composition molded body is heat-sealed and moved to the temporary attachment portion. By doing so, the temporary attachment portion that is not heat-sealed is opened.
- the heating element according to claim 13 is the heating element according to claim 1, characterized in that the heating element has a fixing means on an exposed surface.
- the air-permeable base material and the Z or covering material have at least a heat-sealable layer capable of heat-sealing, and the iron powder, carbon component, reaction
- An exothermic composition molded body containing an accelerator and water as essential components and having an exothermic composition with a mobile water value of 0.01 to 20 is laminated on a substrate, and a hot-melt adhesive is melted thereon.
- the method for manufacturing a heating element according to claim 15 is the method for manufacturing a heating element according to claim 14, wherein after the outer periphery of the heating element is temporarily attached, the outer periphery of the heating element is replaced with an air vent. It is characterized by heat sealing.
- a method for manufacturing a heating element according to claim 16 is the method for manufacturing a heating element according to claim 14, wherein a heating roll having a heat seal portion smaller than the temporary attachment portion in the temporary attachment roll is used. It is characterized by heat sealing.
- the method for manufacturing a heating element according to claim 17 provides the method for manufacturing the heating element according to claim 14.
- the heat-generating composition molded body is heat-sealed and moved to a new temporary tacking portion, thereby opening the temporary sealing portion that is not heat-sealed.
- the heat generating body is heat-sealed at the center portion of the heat seal portion, and the peripheral portion of the heat seal portion is adhesively sealed.
- the adhesive layer is preferably laminated on the heat seal layer of the covering material.
- the adhesive layer is preferably laminated on the upper surface of the exothermic composition molded body!
- the melting point of the base polymer of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is preferably not more than the melting point of the heat-sealing material constituting the heat-seal layer.
- the fixing means is a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer includes a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organic silicon compound, a hydrophobic polymer compound, Pyroelectric substances, antioxidants, aggregates, fibrous materials, moisturizers, functional substances, or a mixture of these. It is preferable to contain at least one selected component.
- the thickness of the adhesive layer is equal to or less than the total thickness of the heat seal layers of the base material and the covering material.
- the adhesive layer preferably has a gap.
- the heat seal layer is composed of an ethylene heat seal material, and the adhesive layer is composed of a hot melt adhesive.
- the said temporary attachment roll is a flat roll which has a type
- an indentation roll having an indentation portion smaller than the exothermic composition molded body.
- the present invention has the following effects. 1.
- the heat-sealing can be surely performed without causing wrinkles, and high-speed heat sealing is achieved. realizable.
- the base material and the coating material are configured to adhere to each other with an adhesive layer, it can be temporarily attached by simply applying pressure, and can be easily performed by the next heat seal, resulting in higher line speed. To achieve a significant improvement in productivity.
- the adhesive layer compatible with the heat-sealable layer, the adhesive and heat-sealant can be mixed without separation during heat sealing, enabling more reliable heat sealing.
- the heating element of the present invention is a heating composition molded body obtained by molding a heating composition having an exothermic substance, a carbon component, a reaction accelerator, and water as essential components, and a mobile water value of 0.01 to 20.
- a heating element formed by laminating on a base material, covering with a covering material, and heat-sealing the peripheral edge of the exothermic composition molded body, wherein the base material and the covering material are adhesive layers
- the part temporarily attached and temporarily attached is heat sealed by the heat seal layer of the base material and Z or the covering material, and the adhesive layer component and the heat seal layer component are provided in the heat seal part. Coexisting, and the heat seal part has a 60 ° C seal strength of 0.8 kgZ25 mm or more.
- the present invention is intended to increase the speed of heat sealing and to stabilize the heat sealing portion by temporary attachment, and the following advantages are obtained.
- the base material and the coating material are configured to adhere to each other with an adhesive layer, it is extremely easy to adhere by simply applying pressure. Suitable for. 2) In addition, the heat sealing device is unnecessary and simplification of production equipment can be realized.
- the adhesive used in the adhesive layer is compatible with the hot-melt adhesive used in heat sealing, so it is dispersed in the heat sealing part and does not hinder heat sealing, forming an appropriate heat sealing part. it can.
- the heat seal part can be easily formed with a heat seal. High-speed and stable heat sealing can be performed.
- temporary attachment refers to a weak, pressure-sensitive adhesive or adhesive for holding a stored exothermic composition molded body until at least the base material and the covering material are adhered by an adhesive layer and heat sealed. It is sticky.
- the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive and has a 60 ° C seal strength of 0.01 to 0.8 kg / 25 mm. Thereby, the movement of the exothermic composition molded body between the base material and the coating material can be stopped, and high-speed heat sealing is possible. Further, if desired, heating may be performed during temporary wearing. It is preferable that the heating is performed at a pressure not higher than the melting point of the base polymer in the hot-melt pressure-sensitive adhesive forming the pressure-sensitive adhesive layer.
- the temporary sealing part is formed through an adhesive layer, but the adhesive constituting the adhesive layer is a layer formed of a polymer composition having tack at normal temperature, and it is limited if heat sealing can be performed after temporary attachment. Not sure.
- the non-hydrophilic adhesive is preferred as the adhesive that constitutes the adhesive layer used for temporary attachment.
- the adhesive constituting the adhesive layer preferably has a melting point of the base polymer of the adhesive having good compatibility with the heat sealing material constituting the heat seal, which is lower than the melting point of the heat sealing material.
- a hot melt adhesive is preferable for the hot melt adhesive.
- the heat seal material is an olefin-based material
- an example of a preferable example of the adhesive is an olefin-based adhesive.
- an adhesive is laminated on the base material, the exothermic composition molded body, and the covering material.
- at least the peripheral portion of the exothermic composition molded body and Z or the covering material on the base material are laminated.
- an adhesive having good compatibility with the heat seal layer is laminated on the peripheral edge of at least the exothermic composition molded body on the lower surface.
- the adhesive layer when the adhesive layer is laminated on the peripheral edge of the exothermic composition molded body on the substrate and Z or on the peripheral edge of the exothermic composition molded body on the lower surface of the coating material, Or when the adhesive layer is laminated on the entire lower surface of the coating material, and when the adhesive layer is laminated on the entire surface of the substrate and the peripheral edge of the exothermic molded article on the lower surface of the coating material or Z!
- the adhesive layer is laminated on the entire peripheral edge of the exothermic composition molded body on the substrate and / or the lower surface of the covering material, and further, these adhesive layers are partially spread over the entire surface of each part. Are laminated.
- the pressure-sensitive adhesive layer may be scattered on the entire surface or a part of the exothermic composition molded body.
- the substrate and the Z or coating material may be partially interspersed over the entire region where the adhesive layer is removed, that is, a corresponding region where the exothermic composition molded body is laminated.
- 60 ° C seal strength refers to a 25 mm x 250 mm test piece taken from the location where the seal strength of a sealed target sample is measured, left in a 60 ° C environment for 5 minutes, and then in a 60 ° C environment. Then, the maximum strength is measured for each of the three specimens by gripping, spacing 10 mm, and tensile speed 300 mmZmin.
- the seal strength of the temporary attachment portion is preferably 0.5 kgZ25 mm or more, more preferably 0.5 to: LkgZ25 mm, and further preferably 0.5 to 0.9 kg / 20 ° C. in an environment of 20 ° C. 25 mm, and more preferably 0.5 to 0.8 kgZ25 mm. Also 60.
- the C seal strength is preferably less than 0.8 kgZ25 mm, more preferably from 0.01 to less than 0.8 kg / 25 mm, even more preferably less than 0.01 to 0.5 kgZ25 mm, and even more preferably 0.01. It is less than ⁇ 0.4kgZ25mm.
- the adhesive layer of the temporary attachment part is composed of an adhesive and has a 60 ° C seal strength of 0.01 to 0.8 kg / 25 mm, which stops the movement of the exothermic composition molded body between the substrate and the coating material. Capable of high-speed heat sealing. Furthermore, you may heat at the time of temporary attachment if desired. The heating is preferably performed under pressure at a temperature equal to or lower than the melting point of the base polymer in the hot melt pressure-sensitive adhesive forming the pressure-sensitive adhesive layer.
- the seal strength of the heat-sealed part heat-sealed after temporary attachment in an environment of 20 ° C is preferably 1.0 kgZ25 mm or more, more preferably 1.2 kgZ25 mm or more, and even more preferably 1.5 kgZ25 mm or more. More preferably, it is 1.5 to 3 kgZ25 mm.
- the 60 ° C seal strength in an environment of 60 ° C is preferably 0.8 kgZ25 mm or more, more preferably 1. OkgZ25 mm or more, further preferably 1.2 kgZ25 mm or more, more preferably 1. 5kgZ25mm or more.
- the seal strength under the 20 ° C environment is the same as the 60 ° C seal strength condition except that the measurement environment temperature is 20 ° C.
- the pressure-bonding surface to be restricted may be either partial pressure bonding or full-surface pressure bonding.
- the means can be preferably performed by a template, a flat surface or a flat plate. Moreover, it can carry out by letting a mold roll, a plane, or a flat roll pass.
- the die roll has a crimped shape that is similar to the periphery of the exothermic composition molded body, or a part of the periphery of the exothermic composition molded body is crimped so that only the temporary attachment part is crimped.
- the exothermic composition molded body is formed so as not to be pressure-bonded, and there is no limitation as long as the heat-generating composition molded body is not pressure-bonded.
- the crimping surface can be a plain surface, but it is preferable that at least one surface of the crimping surface is an embossed surface in consideration of material slippage and conveyance.
- the shape of the embossed mesh examples of the shape are usually a wave shape, a turtle shell shape, a ring shape, a polka dot shape, and a mesh pattern shape.
- the area ratio of the protrusions on the embossed surface but usually 0.5 to 60% is preferable.
- the crimping part is also a temporary attachment part. As an example, a part or a part provided for the entire surface can be given.
- the flat or flat roll is a flexible material that presses the entire heating element and temporarily attaches at least the peripheral edge of the exothermic composition.
- the material is not limited as long as it can be deformed and temporarily attached, but examples thereof include foams, felts, woven fabrics, non-woven fabrics, rubbers, balloons and the like.
- Temporary attachment is performed using the temporary attachment tool shown as an example in FIGS. 7 to 13.
- the temporary attachment is not limited thereto, and any temporary attachment can be used.
- the exothermic composition molded body is thick, depending on the type of coating material used, at least one selected from the exothermic composition molded body and the end of the substrate as shown in FIG. 8 is temporarily attached. It is preferable.
- the end portion of the base material is an end portion of the base material parallel to the MD direction of the exothermic composition molded body and a region parallel to the TD direction where no exothermic composition molded body exists.
- a slack of a covering material may be provided between at least one exothermic composition molded body and at least one adjacent exothermic composition molded body, and temporarily attached.
- the slack at the time of temporary attachment may be one direction or plural directions. This is because the loose seal can prevent the seal from being cut.
- the heat generating part is composed of a divided heat generating part and a separating part which is a seal part
- the divided heat generating part and the divided heat generating part are separated depending on the limit width of the heat seal. It was necessary to make a large section between them.
- the space between the segment heat generating portions becomes large, the heat retaining effect between the segment heat generating portions decreases, and the heat generation time is shortened. Therefore, this method of making the heating element flexible has a problem in duration of heat generation.
- heat sealing after temporary attachment allows high-speed, narrow heat sealing without causing the exothermic composition to dissipate to the heat seal portion.
- the exothermic composition is temporarily attached but is heat sealed! /, NA! /
- the heat seal part can be opened and the section width can be reduced.
- the heat seal material constituting the heat seal layer is not limited as long as at least a part of the heat seal material can be bonded by heating even if it is a single material or a composite material having a heat seal layer. Absent.
- ethylene olefin copolymer resins such as polyethylene and polypropylene, ethylene vinyl acetate copolymer resins, ethylene-isobutyl acrylate copolymer resins, and other ethylene acrylic acid ester copolymers
- hot melt resin such as polyvinyl ether hot melt resin, polyurethane hot melt resin, polycarbonate hot melt resin, vinyl acetate, vinyl chloride vinyl acetate copolymer, and films and sheets thereof.
- hot melt resin such as polyvinyl ether hot melt resin, polyurethane hot melt resin, polycarbonate hot melt resin, vinyl acetate, vinyl chloride vinyl acetate copolymer, and films and sheets thereof.
- what mixed additives, such as various acid prevention agents, can also be used for hot-melt type
- the thickness of the heat seal layer is not limited as long as it can be heat sealed, but is usually 5 to 1000 ⁇ m, preferably 10 to 500 ⁇ m 2 , and more preferably 15 to 250 ⁇ m. If the thickness force of the heat seal layer is less than 5 / zm, the required adhesive strength may not be obtained. On the other hand, if the thickness force exceeds 1000 m, the heat seal speed becomes slow.
- the pressure-sensitive adhesive is a layer formed of a polymer composition having a tack at normal temperature, and there is no limitation as long as it can be heat-sealed after temporary attachment that is compatible with the heat-seal layer.
- a solvent-type pressure-sensitive adhesive or a hot-melt pressure-sensitive adhesive is given as an example.
- the foamed adhesive layer elastically deforms the gas in the pores, the elasticity, stretchability and flexibility are remarkably enhanced, the flexibility of the packaging material composed of the base material and the covering material, In particular, the sealing part of the base material and the covering material becomes extremely flexible and the feeling of use is further enhanced.
- Examples of methods for foaming hot-melt adhesives include chemical foaming methods and physical foaming methods.
- chemical foaming methods inorganic foaming agents, organic foaming agents, or mixtures thereof are used. This is a method of foaming using nitrogen gas or carbon dioxide gas generated during the decomposition reaction.
- Physical foaming is a method of applying a gas such as compressed air, compressed nitrogen, or compressed carbon dioxide gas to the pressure-sensitive adhesive. It is a method of mixing by physical force.
- the physical methods described in JP-B-60-3350, JP-A-62-87267, JP-B-63-17295, JP-A-1-59023 are described in particular. The foaming method is recommended for the reasons described below.
- a pressure gas is brought into contact with a hot-melt pressure-sensitive adhesive ejected from a nozzle at atmospheric pressure, whereby the pressure-sensitive adhesive is blown into a delicate woven fabric, and between them. Fine open pores or closed cells are formed.
- the expansion ratio depends on the temperature related to the viscosity of the pressure-sensitive adhesive and the pressure of the pressurized gas, the temperature conditions for obtaining a pressure-sensitive adhesive layer with the required foaming rate compared to the case of using a foaming agent. Easily set pressure conditions!
- the pressure-sensitive adhesive is formed of a hot-melt polymer material, an alicyclic petroleum resin and a softening agent, and this pressure-sensitive adhesive is foamed by the above-described method. .
- examples of the hot-melt polymer material include those described above.
- This hot-melt type polymer material is a base polymer in an adhesive, and an adhesive foam formed using this polymer has excellent shape retention and has an initial tack.
- the adhesiveness at the time of caro is good, and the adhesive strength after adhesion is stable.
- alicyclic petroleum coffin is an adhesive imparting agent, and required adhesive properties can be obtained by combination with a hot-melt type polymer substance.
- An alicyclic petroleum resin is a petroleum-based resin having a cyclic skeleton.
- rosin for example, rosin, dehydrated rosin, dehydrogenated rosin glycerin esters, gum rosin glycerin esters, hydrogenated Rosin, hydrogenated rosin methyl ester, hydrogenated rosin glycerin ester, hydrogenated rosin pentaerythritol rosin, polymerized rosin, polymerized rosin glycerin ester, coumarone indene resin, hydrogenated petroleum resin, Examples thereof include maleic anhydride-modified rosin, rosin derivatives, C5 petroleum rosin, and the like, which are appropriately used alone or in combination of two or more in order to impart the required adhesive strength to the patch.
- the base material of the present invention is substantially planar and does not have a storage pocket.
- the covering material covers the exothermic composition provided on the base material, and the peripheral portion of the exothermic composition is heated.
- the base material and the covering material in the present invention are not distinguished from each other by the material structure, and the material on which the exothermic composition molded body is laminated is defined as the base material, and then the base material is covered with the exothermic composition molded body. Defined material is defined as a covering material.
- the substantially planar shape means a flat surface that does not have storage recesses such as storage pockets, storage sections, and storage areas that are provided in advance to store the exothermic composition. Say. Accordingly, irregularities that do not intentionally contain the exothermic composition may exist.
- the pocket of the present invention is a storage pocket previously provided in the packaging material for storing the exothermic composition, and is a pocket as described in JP-A-2001-507593. Since the unevenness that is not intended for storing the intentionally generated heat and molded product is not a pocket, even if such unevenness is present in the base material, it should be a substantially planar base material.
- the storage compartment is a storage compartment provided in advance for the packaging material in order to store the exothermic composition.
- the storage compartment is described in Japanese Patent No. 316160, Japanese Patent Publication No. 11-508314, V, etc. Storage compartment. It is not intended for storage of the intentionally exothermic composition molded body! Since the unevenness is not the storage compartment, even if such unevenness is present in the base material, the storage area is a substantially flat base material.
- a storage area for storing preliminarily provided in the packaging material for storing the exothermic composition which is described in Japanese Patent No. 316160 and Japanese Patent Publication No. 11 508314. It ’s a storage area. It is not intended for storing the exothermic composition molded body! Since the unevenness is not a storage area, even if such unevenness is present in the base material, it should be a substantially flat base material.
- the material constituting the base material, the covering material, and the covering material is not limited as long as it functions as a storage bag for the exothermic composition.
- Non-breathable material, breathable material, water-absorbing material, non-water-absorbing material, non-extensible, stretchable, stretchable material, non-stretchable material, foamed material, non-foamed material, non-heat-sealable material, heat Sealing materials and the like are listed as examples, and can be appropriately used according to a desired application in a desired form of a film, a sheet, a nonwoven fabric, a woven fabric, and the like and a composite thereof.
- the base material is made of a non-breathable film or sheet
- the covering material may be a force that also acts as a breathable film, sheet, or nonwoven fabric, or both may be breathable.
- the flooring material may be properly used for air permeability and non-air permeability.
- the base material may have a single layer structure or a multilayer structure.
- the structure is not limited, but as an example of a multilayer structure, the base material is A layer ZB layer or A layer ZB layer ZC layer or A layer ZB layer ZC layer ZD layer Or E layer ZF layer ZG layer or F layer ZH layer ZG layer force
- Layer A is a thermoplastic resin film such as polyethylene, heat seal layer such as polyethylene or EVA, water absorbent paper, etc.
- layer B is a nonwoven fabric of thermoplastic resin such as nylon, non-water absorbent paper, water absorbent.
- C layer is adhesive layer, non-water-absorbent Paper, water-absorbing paper, thermoplastic resin film such as polyethylene, non-slip layer, non-woven fabric of thermoplastic resin such as polyester and nylon
- D layer is separator, thermoplastic resin film such as polyethylene, non-woven fabric E layer is a heat seal layer, etc.F layer is a polyethylene resin thermoplastic porous film, perforated film, polyethylene thermoplastic resin film, non-water absorbent paper, etc.
- examples of the base material or the coating material include a polyethylene heat sheath layer / polyethylene phenolic layer and a polyethylene heat sheath layer / Polypropylene film, polyethylene heat-seal layer / polyethylene film using a metal catalyst Z adhesive layer Z separator, EVA heat seal layer Z polypropylene film z adhesive layer Z separator, polyethylene heat seal layer Z polyethylene film
- Non-woven fabric Z paper, porous film Z perforated (needle, laser) film, non-woven fabric z paper, porous film z non-woven fabric and the like can be mentioned as examples.
- each layer may be laminated via a breathable pressure-sensitive adhesive layer or a laminating agent layer, or may be laminated by hot melt extrusion or the like.
- the pressure-sensitive adhesive layer may be provided on these packaging materials.
- the gas-permeable adhesive layer is formed by spraying and spreading the adhesive substance through hot air while heating and melting.
- the adhesive material is made into fibers by an appropriate method such as curtain spray method, melt blow method, slot spray method, etc., and then spread and deposited on an appropriate support substrate such as a porous film, a breathable substrate or a separator.
- An example is an adhesive layer.
- the non-breathable material is not limited as long as it has non-breathability.
- Polyethylene, polypropylene, nylon, acrylic, polyester, polyvinyl alcohol, ethylene vinyl acetate copolymer and other films, sheets, coatings that have polymer strength, and those in which a metal (including semiconductor) compound such as silicon oxide is laminated For example, and composite materials using them.
- an example of a highly non-breathable film is a non-breathable material film in which a thin film of a metal containing a semiconductor or a compound thereof is provided in a single layer or multiple layers.
- metals including semiconductors include silicon, aluminum Examples thereof include alloys and mixtures containing these metals.
- the metal compound including a semiconductor include oxides, nitrides, and oxynitrides of the above metals, alloys, and mixtures.
- one obtained by laminating a silicon oxide layer, an aluminum oxide layer, a silicon oxynitride layer, or an arbitrary layer thereof on a stretched polyolefin film (for example, biaxially stretched polypropylene vinylome) can be given as an example.
- the breathable material is not limited as long as it has breathability.
- a breathable film such as a porous film and a perforated film, paper, non-woven fabric, etc. having air permeability alone, paper, and a breathable film, non-woven fabric, etc. are laminated to have air permeability.
- a non-breathable packaging material with a polyethylene film laminated to a non-breathable material with fine holes using a needle, etc. to make it breathable, and fibers are laminated and thermocompression bonded to make it breathable. Examples thereof include a controlled nonwoven fabric, a porous film, or a laminate of a nonwoven fabric and a porous film.
- the perforated film is a non-breathable film such as polyethylene film provided with fine holes with a needle so as to be breathable.
- the air permeability is not limited as long as heat generation can be maintained.
- breathability is moisture permeability by the Lissy method (Lyssy method).
- LO Lissy method
- LO LO, 000g / mV4hr, preferably 70 ⁇ 5,000gZm 2 Z24hr, more preferably Is 100 to 2 , OOOg Zm 2 Z24hr, more preferably 100 to 700 gZm 2 Z24hr.
- the moisture permeability is less than 50, the calorific value is reduced, and a sufficient thermal effect cannot be obtained, which is not preferable.
- it exceeds 10,000 gZm 2 Z24hr, the exothermic temperature increases and the safety is improved. This is not preferable because a problem may occur.
- the stretchable packaging material is not particularly limited as long as it has stretchability. That is, as a whole, it may be a single product as long as it has stretchability, or a composite product composed of stretchable substrates or a combination of a stretchable substrate and a non-stretchable substrate.
- natural rubber recycled rubber, synthetic rubber, elastomers, stretchable shape memory polymers, etc., or mixtures of these, blends of these with non-stretchable materials, and mixed products
- examples include woven fabrics, films, yarns, and the like that are made from a combination.
- porous film examples include a porous film obtained by stretching a film made of a filler material such as polyethylene, a polyolefin resin such as linear low density polyethylene and polypropylene, a fluorine resin such as polytetrafluoroethylene, and the like.
- a quality film can be selected as appropriate.
- the non-woven fabric include rayon, nylon (polyamide), polyester, acrylic, polypropylene, vinylon, polyethylene, polyurethane, cupra, cotton, cellulose, pulp, etc.
- a mixed paper or cumulative fiber layer stack is used.
- dry non-woven fabric, wet non-woven fabric, spunbond, spunlace, etc. can be used for manufacturing.
- a nonwoven fabric made of a core-sheath composite fiber may also be used.
- the components used in the moldable exothermic composition and the heating element of the present invention, and the packaging materials such as the base material, the covering material, and the covering material, in addition to the materials that have been used conventionally, are biodegradable materials. Can be used.
- the exothermic composition contains exothermic substances such as iron, a carbon component, a reaction accelerator and water as essential components, and has surplus water with a mobile water value of 0.01 to 20, It is preferable to use an exothermic composition that has a formability with surplus water and that does not function as a barrier layer in the exothermic composition and causes an exothermic reaction when in contact with air.
- the exothermic composition is a water retention agent, a water absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fibrous material, a functional material, a surfactant, an organic key compound, a pyroelectric material, a moisturizing agent.
- a water retention agent a water absorbing polymer
- a pH adjuster a hydrogen generation inhibitor
- an aggregate a fibrous material
- a functional material a functional material
- a surfactant an organic key compound
- a pyroelectric material a moisturizing agent.
- the iron powder is preferably normal iron powder, iron alloy powder, or active iron powder made of iron powder or iron alloy powder having an oxygen-containing film on at least a part of the surface of the iron powder.
- the iron oxide film is a film made of iron such as iron oxide, hydroxide, oxyhydroxide and the like containing oxygen.
- Active iron powder is a ferrous oxide film formed at least locally on the surface of the iron powder. Local batteries and pits inside and outside the iron oxide film are formed between the ground iron and the iron oxide film. It is possible to obtain the effect of promoting the oxidation reaction.
- iron powder examples include, but are not limited to, pig iron iron powder, atomized iron powder, electrolytic iron powder, reduced iron powder, sponge iron powder, and iron alloy powder thereof.
- these iron powders may contain carbon or oxygen, or iron containing 50% or more of iron and other metals!
- the type of metal contained in the alloy is not particularly limited as long as the iron component acts as a component of the exothermic composition, but metals such as aluminum, manganese, copper, nickel, silicon, cobalt, palladium and molybdenum, semiconductors, etc. Is given as an example.
- the metal of the present invention includes a semiconductor. These metals and alloys may be present only on the surface or on the inside, or on both the surface and the inside.
- the content of the metal other than iron is usually 0.01 to 50% by weight, preferably 0.1 to 10% by weight, based on the whole iron powder.
- a mixture of active iron powder and iron powder other than active iron powder is an example.
- the mechanism is not in any detail, but due to the contact between the acidic gas and the component, the oxidation of the component, particularly the iron powder, the iron oxide film on the surface of the iron powder, that is, the oxygen-containing film
- the surface of the activated carbon is also oxidized, and the Z or oxidized iron component adheres, both are imparted with hydrophilicity, and are improved. It is estimated that
- iron oxide film is formed on the surface of the iron powder, the iron powder particles become irregularly shaped, distortion occurs due to acid and soot, water-containing pits are formed, and some function change occurs. It is presumed that iron powder is activated and heat generation is improved.
- magnetite Fe 2 O 3
- it has excellent conductivity.
- hematite Fe 2 O 3
- it becomes porous the presence of hematite (Fe 2 O 3) is also preferable because it becomes porous.
- the surface of the carbon component is oxidized to become a carbon component with a large amount of surface oxide, the hydrophilicity is increased, and the activity is also increased.
- the thickness of the iron oxide film which is an oxygen-containing film covering the surface of the iron powder, is usually 3 nm or more, preferably 3 ⁇ to 100 / ⁇ ⁇ , more preferably, using Auger electron spectroscopy. More preferably 30 nm to 100 ⁇ m, more preferably 30 nm to 50 ⁇ m, still more preferably 30 ⁇ to 1; ⁇ ⁇ , more preferably 30 nm to 500 nm, still more preferably 50 nm. ⁇ 300nm.
- the thickness of the iron oxygen-containing film can exert the effect of promoting the oxidation reaction, and contact with an oxidizing gas such as air causes the oxidation reaction. You can get started right away. If the thickness of the iron oxygen-containing film is 100 m or more, the heat generation time may be shortened, but it can be used depending on the application.
- a reaction having iron powder, a reaction accelerator and water as essential components, a water content of 0.5 to 20% by weight, and an easy water value indicating an excess water amount of less than 0.01.
- the reaction rate during the contact treatment with the oxidizing gas can be increased, and the time for the temperature rise of the reaction mixture to be 1 ° C or higher can be achieved within 10 minutes.
- the time to reach the predetermined temperature or more proper activation can be achieved and unnecessary oxidation on the iron powder can be prevented.
- exothermic compositions with easy-moving water values of 0.01 to 50 by adding carbon components, etc. to the exothermic mixture produced by contacting the reaction mixture with an oxidizing gas and adjusting the water content are appropriate.
- exothermic compositions with a mobile water value of 0.01 to 20 start an exothermic reaction as soon as they come into contact with air, have excellent exothermic rise properties, and have excellent moldability. is there.
- the oxidizing gas contact treatment method of the reaction mixture consists of iron powder, a reaction accelerator and water as essential components, a water content of 0.5 to 20% by weight and a mobile water value of less than 0.01.
- the temperature of the reaction mixture is increased to 1 ° C or more by contact treatment with oxidizing gas.
- the temperature of the reaction mixture is increased to 1 ° C or more by contact treatment with oxidizing gas.
- a method for producing an exothermic mixture wherein the method described in any one of 1 to 5 is performed in an environment heated to 10 ° C or more from the environmental temperature,
- a method for producing an exothermic mixture which is performed by blowing an acidic gas heated to 10 ° C or higher from the environmental temperature by the method described in 7.
- a method for producing an exothermic composition in which the oxidizing gas contact treatment is performed until the maximum temperature, which is the highest temperature rise due to an exothermic reaction, is exceeded by the method described in any one of 1 to 8.
- the oxidizing gas contact treatment is performed until the maximum temperature, which is the highest temperature rise due to the exothermic reaction, is exceeded, and then the oxidizing gas is shut off.
- a method for producing a heat-generating composition which is held until the temperature is lowered by at least 10 to 20 ° C. 12.
- One example is a method for producing an exothermic mixture in which the reaction mixture or exothermic mixture described in any one of 1 to 5 is heated to 1 ° C or higher in an oxidizing gas environment.
- exothermic mixture may be added to the exothermic mixture, and further treated with an oxidizing gas to form an exothermic mixture.
- the reaction mixture environment during the oxidizing gas contact treatment is not limited as long as it is in contact with oxidizing gas in an environment of o ° c or higher and the temperature rise of the reaction mixture is set to c within 10 minutes.
- it When performing in an open system, it may be present in a container without a lid, or it may be in a state in which an oxidizing gas such as air enters through a breathable sheet-like material such as a nonwoven fabric.
- the acidic gas contact treatment may be either batch type or continuous type under stirring, non-stirring, flowing or non-flowing.
- the water content in the reaction mixture and further in the exothermic mixture before the oxidizing gas treatment is usually 0.5 to 20% by weight, preferably 1 to 15% by weight, more preferably 2 to 10%. % By weight, more preferably 3 to 10% by weight, more preferably 6 to 10% by weight.
- the temperature of the reaction mixture after contact with the oxidizing gas is such that the temperature rise is 1 ° C or more. If there is no limitation, it is preferably 1 to 80 ° C, more preferably 1 to 70 ° C, still more preferably 1 to 60 ° C, and further preferably 1 to 40 ° C. is there.
- the environmental temperature at the time of contact between the reaction mixture and the oxidizing gas is not limited as long as the temperature of the reaction mixture rises above a predetermined level, but is preferably 0 ° C or higher, more preferably 0 to 250 ° C. More preferably, it is 10 to 200 ° C, more preferably 20 to 150 ° C, and further preferably. Or 25 to 100 ° C, more preferably 25 to 50 ° C.
- the temperature rise of the reaction mixture at the time of contact between the reaction mixture and the oxidizing gas is 1 ° C or more.
- the time is within 10 minutes, but it is preferably 1 second to 10 minutes, more preferably 1 second to 7 minutes, more preferably 1 second to 5 minutes, more preferably 2 seconds to 5 minutes, further preferably 2 seconds to 3 minutes, and further preferably 2 seconds to 1 minute. is there.
- the temperature of the oxidizing gas is not limited as long as the environmental temperature is maintained.
- the oxidizing gas may be any gas as long as it is acidic and oxygen gas, air, or a mixed gas of an inert gas such as nitrogen gas, argon gas, helium gas and oxygen gas is an example.
- the mixed gas is not limited as long as it contains oxygen, but air is particularly preferred among these, which preferably contain 10% or more of oxygen gas.
- catalysts such as platinum, palladium, iridium and their compounds can be used.
- the oxidation reaction can be carried out in an oxidizing gas atmosphere with stirring, if desired, under pressure, and further under Z or ultrasonic irradiation.
- the optimum conditions for the acid-acid reaction may be appropriately determined experimentally.
- the amount of oxidizing gas used may be adjusted according to the type of oxidizing gas without restriction, the type and particle size of iron powder, the amount of water, the processing temperature, and the processing method.
- open systems there is no limit as long as the required oxygen amount can be taken in.
- open systems should be used so long as they can be surrounded by a breathable material such as nonwoven fabric or woven fabric.
- the amount of air is preferably 0.01 to L000 liters Z, more preferably 0 for 1 g of atmospheric pressure with respect to 200 g of iron powder. 01-: L00 liters Z minutes, more preferably 0.1-50 liters Z minutes.
- the oxygen concentration may be converted based on the case of air.
- peracid additives may be added. Hydrogen peroxide and ozone are examples.
- the state of the reaction mixture or the exothermic mixture at the time of the contact treatment with the oxidizing gas may be either a stationary state, a moving state, or a fluidized state by stirring or the like as long as the iron powder is partially oxidized. However, it may be selected appropriately.
- the acidic gas atmosphere or in the acidic environment where the environment during the contact treatment with the mixed oxidizing gas at the time of mixing each component of the reaction mixture, exothermic mixture and exothermic composition is adjusted.
- An example is gas blowing.
- a method for measuring the temperature rise of the exothermic yarn and composition is as follows.
- the heat generation test of the heating element shall follow the JIS temperature characteristic test.
- At least a part of the surface of the iron powder or active iron powder in the exothermic composition subjected to the oxidizing gas treatment is coated with an iron oxygen-containing film.
- the covering degree of the surface of the iron oxygen-containing film may be the entire surface as long as at least a part of the surface is covered.
- ions of the reaction accelerator such as chlorine ions are contained in the exothermic composition, and therefore, there is no anticorrosive effect on the oxide film due to the corrosion effect by the ions of the reaction accelerator such as chlorine ions. This is a kind of corrosion and does not inhibit the acid-oxidation reaction.
- Etc. occur, an equal area is generated, and unevenness and a gap are also generated. For this reason, it is estimated that it has hydrophilicity and acid-catalyst properties (FeO, etc.) in its own part.
- an iron component that is a contact accelerator with an oxidizing gas containing an iron component as a reaction accelerator and water as an essential component has a reaction active part mainly composed of oxides, hydroxides, chlorine ions, hydrogen ions, and the like. The exothermic reactivity and hydrophilicity are improved, and the exothermic rise and moldability are expected to be remarkably improved.
- the amount of FeO (wustite) contained in the iron component containing the predetermined amount of wustite is usually 2 to 50% by weight, preferably 2 to 40% by weight, more preferably, in terms of the X-ray peak intensity ratio with iron. It is 2 to 30% by weight, more preferably 5 to 30% by weight, and further preferably 6 to 30% by weight. Even if it exceeds 50% by weight, the heat buildup is good, but the heat generation duration is shortened. If it is less than 2% by weight, the heat build-up property becomes dull.
- the thickness of the oxygen-containing film of the iron powder having the predetermined amount of oxygen-containing film or wustite is applied to the exothermic composition or the exothermic composition molded body during lamination.
- the iron powder contains a carbon component and iron powder coated with Z or a carbon component is also preferred. If the iron component is 50% by weight or more with respect to the carbon component, the ratio of the carbon component is Although there is no limitation, iron powder partially covered with 0.3 to 3.0% by weight of conductive carbonaceous material is useful. Examples of conductive carbonaceous materials include carbon black, activated carbon, carbon nanotubes, carbon nanohorns, fullerenes, etc. Iron powder that may be conductive by doping is reduced iron powder or atomized iron powder. Sponge iron powder is an example, and in particular, the conductive carbonaceous material is activated carbon, and the iron powder is returned. The original iron powder is useful for the heating element.
- 0. conductive carbonaceous material coated so as not to impair the flowability of the iron powder in order to perform efficiently from 01 to 0.05 weight 0/0 of oils, such as spindle oil or the like may be ⁇ Ka ⁇ .
- the thickness of the iron oxide film of the iron powder in the mixture or the exothermic composition in the heating element should be measured according to each item. That is,
- the exothermic composition is taken out from the heating element and measured according to the method for measuring the mobile water value.
- a heat-generating composition In a nitrogen atmosphere, a heat-generating composition, a heat-generating composition molded body, a heat-generating composition compressed body or a mixture is dispersed in ion-exchanged water substituted with nitrogen, iron powder is separated with a magnet, and dried under a nitrogen atmosphere. Use a sample for measurement.
- the exothermic composition of the present invention comprises iron powder, a carbon component, a reaction accelerator, and water as essential components, and the production method thereof can be industrially put into practical use.
- the iron powder, the reaction accelerator, and water are used.
- As an essential component a reaction mixture with a water content of 1 to 20% by weight and a mobile water value indicating excess water of less than 0.01 is brought into contact with an oxidizing gas in an environment of 0 ° C or higher and within 10 minutes.
- the temperature rise of the reaction mixture is set to c or more to produce an exothermic mixture, and the exothermic mixture is used as a raw material to obtain an exothermic composition.
- the moisture may be further adjusted to obtain a heat generating composition, or a carbon component or the like may be added or the water content may be adjusted to obtain a heat generating composition.
- the water content of the reaction mixture is set to a certain amount or less, particularly the excess water amount is set to a certain amount or less, and the oxidizing contact treatment can be performed in a short time.
- the amount of excess water and treating for a short time adverse effects caused by the oxidizing gas contact treatment such as poor initial heat generation of the exothermic composition and shortened heat generation retention time can be avoided.
- Industrial mass production method was established. Further, during the oxidizing gas contact treatment, it is not necessary to perform stirring or the like, but if the stirring is performed, the acidic gas contact treatment can be surely performed.
- the state of the reaction mixture or the exothermic mixture in the contact treatment with the oxidizing gas may be either a stationary state, a moving state, or a fluidized state by stirring if the iron powder is partially oxidized. It may be selected as appropriate. Also, examples include an oxidizing gas atmosphere and an oxygen-containing gas blowing, in which there are no restrictions on the environment when mixing the components of the reaction mixture, the exothermic mixture, and the exothermic composition and at the time of moisture adjustment.
- Moisture adjustment is the treatment of water or a water solution of a reaction accelerator after the exothermic mixture is contacted with an oxidizing gas. There is no restriction on the amount to be added, but it is possible to list the weight reduced by the contact treatment and the weight at which the desired water mobility value can be obtained as an example. Whether or not moisture adjustment is performed may be appropriately determined depending on the application.
- the exothermic composition of the present invention comprises iron powder, a carbon component, a reaction accelerator and water as essential components, and a reaction mixture containing iron powder, a reaction accelerator and water as essential components is contact-treated with an oxidizing gas.
- This is an exothermic composition having excellent moldability, which is obtained by adjusting the moisture content of an exothermic mixture and is combined with an appropriate amount of surplus water that has a high exothermic rise. It can also be used to produce a heating element that quickly warms up during use.
- At least the iron powder, including the carbon component has a history of oxidation due to the contact treatment of the acidic gas, and this is deeply related to excellent heat buildup, heat generation sustainability and excellent moldability. Seem.
- carbon components such as activated carbon in the exothermic composition can be reduced by, for example, 20% or more. Decreasing the amount of carbon component added reduces costs.
- an exothermic composition having excellent exothermic rising property, excellent hydrophilicity, and excellent moldability can be obtained.
- a mobile water value of 0.01 to 50, particularly 0.01 to 20 an exothermic composition having remarkably excellent moldability and exothermic properties can be obtained.
- the exothermic composition produced by the production method of the present invention has remarkably improved exothermic rise, so the amount of carbon components such as activated carbon in the exothermic composition can be reduced by, for example, 20% or more, thereby reducing costs. Can contribute.
- the hydrophilicity is remarkably improved, the moldability using the mold is remarkably improved, so that the pieces of the exothermic composition are not scattered around the exothermic composition molded body after molding, so that the seal is not scattered. It is possible to produce a heating element that is accurate and has no seal breakage. As a result, various The exothermic composition molded body of the shape can be produced, and the exothermic body of various shapes can be obtained.
- iron powders having an oxygen-containing film such as an oxide on at least a part of the surface are used as iron powder.
- a mixture of active iron powder having an oxygen-containing film such as oxides on at least part of the surface of the iron powder mixed with iron powder not having an oxygen-containing film is used as the iron powder.
- the active iron powder is 60% by weight or more and the iron powder other than the active iron powder is less than 40% by weight.
- the exothermic composition may comprise a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fibrous material, a functional substance, a surfactant, an organic silicon compound, a pyrogenic compound.
- a water retention agent e.g., a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fibrous material, a functional substance, a surfactant, an organic silicon compound, a pyrogenic compound.
- the exothermic composition of the present invention is not particularly limited in its blending ratio, but it is 1.0 to 50 parts by weight of a reaction accelerator with respect to 100 parts by weight of iron powder.
- Water is 1.0 to 60 parts by weight, carbon component 1.0 to 50 parts by weight, water retention agent 0.01 to: LO part by weight, water-absorbing polymer 0.01 to 20 parts by weight, pH adjusting agent 0.01 ⁇ 5 parts by weight, hydrogen generation inhibitor 0.01 to 12 parts by weight, and it is preferable to select the blending ratio so that the exothermic water value is 0.01 to 20 as the exothermic composition. That's right.
- 1.0-50 parts by weight of metal other than iron 1.0-50 parts by weight of metal oxide other than iron oxide, 0.01-5 parts by weight of surfactant, hydrophobic polymer compound, aggregate, Fibrous substances, functional substances, organic silicon compounds and pyroelectric substances are each 0.01 to 10 parts by weight, and moisturizers, fertilizer components and heating aids are 0.01 to 10 parts respectively: L0 parts by weight, acidic substances. 01 to 1 part by weight.
- the blending ratio of the magnetic material may be appropriately determined as desired.
- This blending ratio can also be applied to a reaction mixture and an exothermic mixture.
- the mobile water value of the reaction mixture is usually less than 0.01.
- the water may be from a suitable source. There are no restrictions on the purity and type.
- the water content is 1 to 70% by weight of the exothermic composition, more preferably 1 to 60% by weight, still more preferably 7 to 60% by weight, still more preferably 10 to 50% by weight, Preferably it contains 20 to 50% by weight.
- reaction mixture and an exothermic mixture before contact treatment with an oxidizing gas 0.5 to 20% by weight of the reaction mixture or the exothermic mixture, more preferably 1 to 20% by weight, still more preferably 3 to 20% by weight. %, More preferably 4 to 15% by weight.
- the carbon component is not limited as long as it contains carbon as a component.
- Examples include carbon black, black bell, activated carbon, carbon nanotube, carbon nanohorn, and fullerene. It may have conductivity by doping or the like.
- Examples include activated carbon prepared from coconut shells, wood, charcoal, coal, bone charcoal, and other raw materials such as animal products, natural gas, fats, oils and resins. In particular, activated carbon having adsorption retention ability is preferable.
- the carbon component if iron powder containing a carbon component that does not necessarily need to be present alone and coated with Z or carbon component is used in the exothermic composition, the carbon component does not exist alone.
- the exothermic composition shall contain a carbon component.
- the reaction accelerator is not limited as long as it can accelerate the reaction of the exothermic substance.
- Examples include metal halides, nitrates, acetates, carbonates, metal sulfates and the like.
- Metal halides include sodium chloride, potassium salt, magnesium salt, calcium salt, ferrous chloride, ferric chloride, sodium bromide, potassium bromide, ferrous bromide, Examples include ferric bromide, sodium iodide, potassium iodide and the like.
- Examples of nitrates include sodium nitrate and potassium nitrate.
- Examples of the acetate include sodium acetate.
- Examples of carbonates include ferrous carbonate.
- metal sulfates include potassium sulfate, sodium sulfate, ferrous sulfate and the like.
- the water retaining agent is not limited as long as it can retain water.
- Wood flour, pulp flour, activated carbon, sawdust, cotton fabric with a lot of fluff, cotton short fibers, paper scraps, plant material, and other plant porous materials with a large capillary function and hydrophilicity, activated clay Examples include hydrous magnesium silicate clay minerals such as zeolite, perlite, vermiculite, silica-based porous materials, fossils, volcanic ash-based materials (terra balloon, shirasu balloon, tyset balloon, etc.).
- processing such as firing and Z or pulverization.
- the water-absorbing polymer is not particularly limited as long as it has a crosslinked structure and has a water absorption ratio of 3 times or more with respect to its own weight. It may also be a cross-linked surface. Conventionally known water-absorbing polymers and commercially available products can also be used.
- water-absorbing polymer examples include a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate having a sulfonic acid group, and a poly (meth) acrylate having a polyoxyalkylene group
- Cross-linked product of (meth) acrylate ester crosslinked product of poly (meth) acrylamide, cross-linked product of copolymer of (meth) acrylate and (meth) acrylamide, hydroxyalkyl (meth) acrylate and (meth) acrylate
- Copolymerized cross-linked product polydioxolane cross-linked product, cross-linked polyethylene oxide, cross-linked polyvinyl pyrrolidone, sulfone-polystyrene cross-linked product, cross-linked polypyridine pyridine, starch-poly (meth) acrylonitrile graft copolymer cane product, starch-poly (
- the water-absorbing polymer having biodegradability in the water-absorbing polymer is not limited as long as it is a biodegradable water-absorbing polymer.
- Examples include crosslinked polyethylene oxide, crosslinked polyvinyl alcohol, crosslinked carboxymethyl cellulose, crosslinked alginic acid, crosslinked starch, crosslinked polyamino acid, crosslinked polylactic acid, and the like.
- the pH adjuster is not limited as long as the pH can be adjusted. There are alkali metal weak acid salts and hydroxides, or alkaline earth metal weak acid salts and hydroxides.
- the hydrogen generation inhibitor is not limited as long as it suppresses the generation of hydrogen.
- An example is a compound having at least one kind or two or more kinds selected from the group consisting of thio compounds, oxidizing agents, alkaline substances, io, antimony, selenium, phosphorus and tellurium.
- the iodo compound is a compound with an alkali metal or an alkaline earth metal, such as a metal sulfate such as calcium sulfate, a metal sulfite such as sodium sulfite, or a metal thiosulfate such as sodium sulfate.
- a metal sulfate such as calcium sulfate
- a metal sulfite such as sodium sulfite
- a metal thiosulfate such as sodium sulfate.
- oxidizing agent examples include nitrate, oxide, peroxide, halogenated oxyacid salt, permanganate, chromate and the like.
- the aggregate is not particularly limited as long as it is useful as a filler and is useful for making Z or the exothermic composition porous.
- Fossil coral coral fossil, weathered reef coral etc.
- bamboo charcoal Bincho charcoal
- silica-alumina powder silica-magnesia powder
- kaolin crystalline cellulose
- colloidal silica pumice
- silica gel silica powder
- my strength powder clay
- talc Examples include powders and pellets of synthetic resins, foamed synthetic resins such as foamed polyester and polyurethane, algae, alumina, and fiber powder.
- Kaolin and crystalline cellulose are not included in the exothermic composition of the present invention.
- fibrous material examples include inorganic fiber materials and Z or organic fiber materials such as rock wool, glass fiber, carbon fiber, metal fiber, pulp, paper, nonwoven fabric, woven fabric, cotton and hemp. Natural fiber, regenerated fiber such as rayon, semi-synthetic fiber such as acetate, synthetic fiber As an example, pulverized products thereof can be given.
- the functional substance is not limited as long as it has a function, but examples include at least one selected from an anion generating substance and a far-infrared emitting substance.
- the negative ion generating substance is not limited, whether directly or indirectly, as long as negative ions are generated as a result. Examples include tourmaline, fossilized coral, granite, co-dielectrics such as calcium strontium propionate, ores containing radioactive materials such as radium and radon.
- the far-infrared emitting material is not limited as long as it emits far-infrared rays. Examples include ceramic, alumina, zeolite, zirconium and silica.
- surfactant examples include surfactants containing ion, cation, nonone and zwitterion.
- surfactants containing ion, cation, nonone and zwitterion examples include polyoxyethylene alkyl ethers, alkylphenol 'ethylene oxide adducts, higher alcohol phosphates, and the like, which are preferred as nonionic surfactants, can be mentioned.
- the organosilicon compound is not particularly limited as long as it is a compound having at least Si—O—R and / or Si—N—R and / or Si—R bonds.
- examples thereof include organic silane compounds such as methyltriethoxysilane, dimethyl silicone oil, polyorganosiloxane, and silicone resin compositions containing them in the form of monomers, low condensates, polymers, and the like. .
- the pyroelectric substance is not limited as long as it has pyroelectricity (pie mouth electricity or pyro electricity).
- Examples include tourmaline and pyroelectric minerals.
- tourmaline which is a kind of tourmaline is preferable.
- Examples of tourmalines include drabite (mafic tourmaline), shawl (iron tourmaline), and elvite (lithia tourmaline).
- the moisturizer is not limited as long as it can be moisturized. Examples include hyaluronic acid, collagen, dariserine, urea and the like.
- the fertilizer component is not limited as long as it contains at least one of the three elements of nitrogen, phosphoric acid, and potassium. Examples include bone meal, urea, ammonium sulfate, lime superphosphate, potassium chloride, calcium sulfate and the like.
- the hydrophobic polymer compound is in contact with water in order to improve drainage in the composition.
- the polymer compound has an angle of 40 ° or more, more preferably 50 ° or more, and still more preferably 60 ° or more.
- Examples include powders, granules, granules, tablets, etc. whose shape is not limited.
- polyolefins such as polyethylene and polypropylene, polyesters, polyamides, and the like.
- heat generation aid examples include metal powder, metal salt, metal oxide, Cu, Mn, Cu CI, FeCl, diacid manganese, cupric oxide, tetraacid tetraacid iron and the like. Mixture etc.
- any metal acid can be used as long as it does not inhibit the acid of the iron by the acid gas, but examples include manganese dioxide and cupric oxide.
- the acidic substance include hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid, succinic acid, malic acid, maleic acid, chloroacetic acid, iron chloride, sulfuric acid, which may be any of inorganic acids, organic acids, and acidic salts. Examples include iron, iron oxalate, iron citrate, salt-aluminum, salt-ammonium, hypochlorous acid, and the like.
- a heating composition molded body obtained by molding a heating composition containing iron powder, a carbon component, a reaction accelerator, and water as essential components is laminated on a base material, and then on that.
- Adhesive was provided as a breathable adhesive layer by a melt blow method, etc., and a covering material was further covered on the substrate and the heat generating composition, or an adhesive was provided as a breathable adhesive layer by a melt blow method, etc. Cover the covering material, press with a temporary roll, temporarily bond the base material and the exothermic composition molded body and the covering material, and then cover the base material and the peripheral portion of the exothermic composition molded body with a heat seal roller.
- a method for manufacturing a heating element wherein the material is heat sealed to form a heat seal portion. Moreover, at least one of the base material and the covering material has air permeability.
- a breathable pressure-sensitive adhesive layer may be provided on the heat seal portion side of the coating material, or a breathable pressure-sensitive adhesive layer may be provided by a melt-blowing method or the like on the exothermic composition molded body provided on the substrate.
- the temporary adhering roll may be at least one selected from a mold roll and a flat roll having at least a surface having flexibility.
- the roll surface may be plain, patterned, or a mixture of plain and patterned.
- FIGS. 7 (a) and 7 (b) show examples of temporary attachment plates, in which the exothermic composition molded body and the like are accommodated in the recesses 17B, and the temporary attachment portions are formed by 17A.
- FIG. 8 (a) is a perspective view of the temporary attachment roll 18 in the MD direction.
- (b) is a side view thereof.
- a temporary attachment portion is formed of 18A, and a heat-generating composition molded body and the like are accommodated in 18B.
- FIG. 9 (a) is a perspective view of the roll 18 for temporarily attaching the end portion of the base material in the MD direction, or the end portion of the base material in the MD direction and the top of the heat generating composition formed body and the covering material.
- FIG. 2B is a cross-sectional view showing a part of the heating element 1 and the roll 18 for temporarily attaching the end portion of the base material 4 in the MD direction and the covering material 5.
- (c) is a cross-sectional view showing a part of the roll 18 and the heating element 1 for temporarily attaching the end portion of the base material in the MD direction, the top portion of the heating composition molded body 1A and the covering material 5;
- (d) is a perspective view showing a part of the heating element 1 temporarily attached to the end portion of the base material in the MD direction and the top of the heating composition molded body 7 and the covering material 5.
- a temporary attachment portion is formed by 18A.
- the exothermic composition molded body or the like is accommodated, but the exothermic composition molded body is not pressed in the case shown in FIG. Fig. (C) shows what pushes this part.
- the end in the MD direction of the base material is temporarily attached by the temporary attachment roll 18 shown in the figure (c).
- the space 7B between the composition molded bodies 7 and the peripheral portion of the heating element including the temporary attachment portion are heat sealed by a heat seal roll.
- the covering material is slackened between the exothermic composition molded bodies 7 and 7 by temporary fixing rolls, and the periphery of the heat generating body is temporarily attached. After this, the space 7B between the exothermic composition molded bodies 7 and 7 adjacent to each other and the peripheral portion of the heating element including the temporary attachment portion are heat-sealed. This slack can prevent the seal from being cut.
- FIG. 10 is a perspective view of the temporary roll 18 in the TD direction, and a temporary bonding portion is formed by 18A.
- FIG. 11 is a plan view of a temporary attachment roll 18 having a rectangular temporary attachment portion, and the temporary attachment portion is formed by 18A. Then, what is pressed by the roll 18 is formed with a temporary attachment portion 7 as shown in FIG. 12, and temporarily heat-sealed together with the portion 7A.
- FIG. 13 is a plan view of the temporary roll 18 having an elliptical heat generating portion.
- FIG. 14 shows a heating element having a circular section in the heat generating part temporarily attached by the temporary fixing roll in which the elliptical part of the temporary fixing roll shown in FIG. 13 is formed into a perfect circle shape.
- FIG. 3 is a plan view showing a state in which heat sealing 8 is performed after temporary attachment.
- FIGS. 15 to 17 are explanatory diagrams of breakage of the heating element and Z or opening.
- FIG. 15 shows a cross-sectional view of an opening plate 22 that has an opening convex portion 22A and breaks and Z or opens. As shown in FIG. 17, the heating projection 22A presses the exothermic composition molded body or the like through the covering material 5.
- FIG. 16 is a cross-sectional view of the breaking roll 22 in which the opening convex portion 22C of FIG.
- FIG. 17 (a) is a schematic cross-sectional view showing breaking and opening using an opening roll 22B that has an opening convex portion 22C and breaks and Z or opens, as shown on the left side of FIG.
- the exothermic composition formed body 1A is covered with the covering material 5, and a space is formed around the periphery.
- the covering material 5 and the base material 4 are partially heat-sealed.
- the opening projection 22C presses the upper surface of the covering material 5, whereby the exothermic composition molded body is collapsed and accommodated in the space, and the exothermic composition molded body 3 is Then, push in to heat seal part 8.
- FIG. 17 (b) shows an example in which the opening convex portion 22C is not provided.
- a heating element is manufactured through a cutting step and the like.
- the force step, etc. conventional methods and apparatus forces may be appropriately selected and used.
- the molding method include die-through molding using a punching die, punching punching molding, and punching molding using a concave punching die.
- a method of manufacturing a heating element by a molding method includes a conventional heating element having one heating part and a heating element having a collective heating part composed of two or more divided heating parts divided into heating parts. is there.
- the heating element can be produced by any method as long as it is a molding method using a mold. If there is only one heat generating part, it can be formed by using a punching mold or concave insert mold that can form one heat generating part, or two or more divided heat generating parts divided into heat generating parts.
- the heating element can be manufactured at a speed three times faster than the filling method by using the molding method, it is possible to significantly reduce the cost by improving the production speed by adopting the molding method. Threaded products can only be used if they are exothermic compositions with formability.
- the mold-through molding method uses a punching die, and a molding machine for laminating a punched exothermic composition molded body on a long base material and covering it with a long covering material.
- a rotary sealer that can seal the peripheral part of the base material and the coating material (heat seal, pressure seal, thermocompression seal, etc.), and the exothermic composition molded body through the seal
- it is a continuous forming method in which the necessary parts of the peripheral part and the divided part are heat sealed and sealed.
- Punching die punching uses a die, covers one side of the hole with a roll, fills the hole with the exothermic composition, and then applies a long substrate to the other side.
- the exothermic composition molded body is laminated on the base material.
- the squeeze molding method is a molding machine for laminating a heat generating composition molded body on a long base material by filling the concave portion with a drum-shaped rotating body having a concave portion and transferring it to the base material, and a long machine.
- a rotary sealer that can cover the target section and the peripheral edge of the base material and the cover (heat seal crimping seal, thermocompression seal, etc.).
- a continuous forming method in which a necessary portion of the peripheral portion and the divided portion of the active exothermic composition molded body is heat sealed and sealed.
- An example of the heating element using the exothermic composition is a heating element configured by laminating the exothermic composition molded body between a breathable packaging material including a base material and a coating material. It is mentioned as.
- Temporary attachment is performed by using a temporary attachment plate, temporary attachment roll, etc., and covering with a base material and Z or exothermic composition and Z or exothermic composition molded body and a coating agent, and pressurizing and heating a desired region. It can be performed by pressure bonding or the like. Heating and pressing can be performed by passing through a heating press or a heating roll. Pressurization and heating / pressurization can be performed with flat or flat rolls. To increase the shape fixing effect while maintaining the flexibility of the 1S sheet, It is preferable that at least one surface of the heat pressing surface is an embossed surface.
- the shape of the embossed mesh there are no particular restrictions on the shape of the embossed mesh, but it is usually wavy, tortoiseshell, ring-shaped, polka-dotted, or mesh-shaped, and the exothermic composition powder is applied to the non-compressed part during pressurization or heat pressurization. A shape that is easy to avoid is preferred.
- the area ratio of the protrusions on the embossed surface is not particularly limited, but is usually a force of 0.5 to 60.0%, preferably 5.0 to 40.0%.
- the surface material of the temporary attachment plate and temporary attachment roll can be used from hard to flexible. In the case of a flat or flat roll, preferably at least the surface is flexible and a deformable surface is preferable.
- materials such as felt, non-woven fabric, and flexible rubber can be cited as examples.
- the temperature and pressure conditions of the pressurization and heat pressurization are different depending on the material of the covering material, the softness temperature of the pressure sensitive adhesive and the heat sealant and the z or melting point, for example, depending on the heating roll.
- the temperature is 70 to 300 ° C and the linear pressure is about 0.1 to 250 kg / cm.
- the thickness of the pressure-sensitive adhesive layer is not limited as long as it can be temporarily attached and heat-sealed, but the total thickness of the heat-seal layer of the base material and the coating material is preferably equal to or greater than the thickness of the pressure-sensitive adhesive layer.
- Opening refers to releasing the state where the base material and the covering material are adhered to each other via the adhesive layer, and releasing the adhesive state between the base material and the covering material. It does not matter whether there are inclusions between the substrate and the coating after the opening. For example, a part of a temporary attachment part in which a base material and a covering material are temporarily attached via an adhesive layer is heat-sealed, and the exothermic composition is added between the base material and the covering material in the non-heat-sealed part region. As an example, it is possible to bring the substrate and the covering material into a non-adhesive state by moving the region.
- Good compatibility at the time of heat sealing means that the heat sealing is not hindered and peeling does not occur when heat sealing. In other words, it is not always necessary for the heat seal part to completely fuse the adhesive layer and heat seal layer. If the heat seal strength after heat sealing is higher than the pressure seal strength after pressure bonding, air is better than the heat seal part. If it does not penetrate the composition, it is heat sealed.
- heat sealing is performed with a heat seal width narrower than the temporary attachment width, and then non-heat By opening one temporary attachment portion, heat sealing is achieved with a substantially narrow heat sealing width.
- a heating element having a heat generating part composed of a divided heat generating part and a sorting part (heat seal part) is an important structure and technology for achieving both flexibility and heat generation characteristics.
- the present invention it is possible to create a heating element having a lower heat generating portion between the divided heat generating portions, and since the divided heat generating portions are not largely separated from each other, the heat retention effect between the divided heat generating portions is increased and the heat generation time is lengthened.
- the mobile water value is a value indicating the amount of surplus moisture that can move out of the exothermic composition in the moisture present in the exothermic composition. This easy water value will be explained using Fig. 20 to Fig. 24.
- a non-water-absorbing 70 m polyethylene film 28 is placed so as to cover the hole 31, and further, a stainless steel having a thickness of 5 mm ⁇ a length of 150 mm ⁇ a width of 150 mm is formed thereon. Place plate 27 and hold for 5 minutes, avoiding exothermic reaction.
- the filter paper 29 is taken out, and along the radially written line, the water or aqueous solution soaking locus is traced from the circumference 35, which is the edge of the hole of the hollow cylinder, to the soaking tip.
- Read in mm as distance 34.
- Each of the 8 values (a, b, c, d, e, f, g, h) read is taken as the measured moisture value.
- the arithmetic average of the eight measured moisture values is taken as the moisture value (mm) of the sample.
- the moisture content for measuring the true moisture value is the blended moisture content of the exothermic composition or the like corresponding to the weight of the heat generating composition or the like having an inner diameter of 20 mm x a height of 8 mm. Measure in the same way only with the corresponding water, and calculate the same value as the true water value (mm). The value obtained by dividing the moisture value by the true moisture value and multiplying by 100 is the mobile water value.
- an exothermic composition molded body obtained by molding an exothermic composition having an excess water amount of 0.01 to 20 is laminated on a substrate and covered with a covering material, and at least the exothermic composition molded body is formed.
- a heating element can be obtained simply by sealing the peripheral edge. It is not necessary to add moisture after the base material is stored in a packaging material such as a coating material. Therefore, the process is remarkably simplified, and there is an advantage in cost.
- the mobile water value (0 to: L00) in the present invention is 0.01 to 20, more preferably 0.01 to 18, more preferably 0.1 to 15, [Preferably ⁇ or 0.001 to 13, more preferably 1 to 13, and further preferably 3 to 13.
- a heating element using a heat-generating composition molded body obtained by molding a moldable heat-generating composition using the surplus water of the present invention as a linking substance is a coagulant aid, a dry binder, a flocculant, etc.
- the appropriate amount of excess water represented by the mobile water value of 0.01 to 20 is used as the linking substance.
- the hydrophilic group in the composition component is hydrated by dipolar interaction or hydrogen bond, and also has a high structural property around the hydrophobic group. Is presumed to exist. As a result, it becomes sand sando state, and it is estimated that moldability of the exothermic composition occurs.
- This is connected water, which is a connected substance in some way. In addition to this, there is also water in a state that can be called free water, and if excess water increases, the structure will soften and free water will increase.
- the controlling factors that cause iron powder to oxidize are the amount of water present and the amount of oxygen supplied to the iron powder surface.
- the adsorbed water film (less than 100mm) is said to have a low rate of acidity with sufficient moisture. When the adsorbed film is about 1 m, the water content is sufficient. In addition, since the water film is thin, it is easy to supply oxygen to the iron powder surface, and the oxidation rate is high. The film becomes thicker and the adsorbed film becomes: m If exceeded, it is estimated that the oxygen supply will decrease.
- the mobile water value representing the optimal water content indicating a moldability and oxidation rate above a certain level was 0.01 to 20, and completed the present invention.
- the component particles are held together by the surface tension of moisture, causing moldability in the exothermic composition, and the moisture does not substantially function as a barrier layer. Therefore, the exothermic composition generates heat upon contact with air.
- the use of an active exothermic composition using active iron powder makes the exothermic composition extremely remarkably excellent in exothermic heat build-up and has a high moldability.
- the water in the exothermic composition molded body produced by the molding lamination method generates heat without moving the packaging material to the water absorbent sheet.
- the heat generating body itself has flexibility, so that it can be applied to places where flexibility is required, such as various parts of the human body or objects having curved surfaces. It is possible to provide a heating element that is excellent in wearing and excellent in usability.
- the covering material, and the exothermic composition molded body at least the covering material and the exothermic composition molded body are temporarily attached via the adhesive layer, and then the peripheral portion of the exothermic composition molded body and the exothermic body.
- the peripheral portion By heat-sealing the peripheral portion, the reliability of heat-sealing is improved, so that high-speed heating for producing a heating element and a narrow heat-sealing width can be achieved.
- the moldability of the present invention means that a molded product of the heat generating composition can be formed in the shape of a punched hole or a concave mold by mold-through molding using a punched mold having a punched hole or by squeeze molding using a concave mold. This shows that the molded shape of the exothermic composition molded body is maintained after molding including separation. If there is moldability, the heat-generating composition molded body is covered with at least the covering material, and the shape is maintained until the seal portion is formed between the base material and the covering material. It is possible to seal with no breakage of the seal because there is no scattered sesame seeds in the seal part. The presence of sesame causes poor sealing. 1) As a measuring device,
- the magnet covers an area that is larger than the area (40 mm) of the maximum cross section with respect to the direction of travel of the punching hole of the mold, and the area in the vicinity thereof.
- a stainless steel plate with a thickness of lmm x length 200mm x width 200mm is placed on the endless belt of the measuring device, and a polyethylene plate with a thickness of 70 ⁇ m x length 200mm x width 200mm is placed on the stainless steel plate. Place the stainless steel mold.
- the exothermic composition 50 g is placed near the scraping plate between the scraping plate and the punching hole to endlessly.
- the shaped belt is moved at 1.8 mZmin, and the exothermic composition is scraped off and filled into the punched hole of the mold.
- the endless belt stops running.
- the mold is removed and the exothermic composition molded body laminated on the polyethylene film is observed.
- the exothermic composition is moldable.
- the exothermic composition of the present invention has compression resistance.
- compression resistance refers to exothermic composition having a thickness of 70% of the mold thickness obtained by compressing the exothermic composition molded body contained in the mold.
- the compacted body retains an exothermic rise of 80% or more of the exothermic rise of the exothermic composition molded body before compression (temperature difference between 1 minute and 3 minutes after the start of the exothermic test of the exothermic composition). That is.
- the exothermic temperature is measured using a data collector, measuring the temperature for 2 minutes at a measurement timing of 2 seconds, and determining the compression resistance based on the temperature difference between 1 minute and 3 minutes later.
- the thickness after compression is preferably 50-99.5% of the mold thickness, more preferably 60-99. 5%, more preferably 60-95%.
- the exothermic composition molded body includes a exothermic composition compressed body.
- the particle size of the water-insoluble solid component constituting the moldable exothermic composition of the present invention is not limited as long as the exothermic composition has moldability.
- the moldability is improved by reducing the particle size.
- the maximum particle size of the water-insoluble solid component excluding the reaction accelerator and water is preferably 2.5 mm or less, more preferably 930 m or less, and even more preferably 500.
- / zm or less more preferably 300 / zm or less, more preferably 250 m or less, more preferably 200 m or less, and 80% or more of the particle size of the solid component is usually 500 ⁇ m or less, preferably 300 ⁇ m or less, more preferably 250 / zm or less, further preferably 200 / zm or less, more preferably 150 m or less, and even more preferably 100 ⁇ m or less.
- the particle size of the water-insoluble solid component is a particle size obtained by separating the particles using a sieve and passing through the sieve and calculating the caliber force of the sieve. That is, the sieve is arranged from the top, such as 8, 12, 20, 32, 42, 60, 80, 100, 115, 150, 200, 250, and 280 mesh. Match. Place about 50 g of water-insoluble solid component particles in the top 8 mesh sieve and shake for 1 minute with an automatic shaker. Weigh the water-insoluble solid component particles on each sieve and tray, and determine the particle size distribution by the weight fraction with the total as 100%.
- the caliber force of the specific mesh is also calculated ( ⁇ m ) and its water-insoluble property The particle size of the solid component.
- Each mesh sieve may be combined with other mesh sieves.
- the 16 mesh path has a particle size of 1 mm or less
- the 20 mesh path has a particle size of 850 ⁇ m or less
- the 48 mesh path has a particle size of 300 ⁇ m or less
- the 60 mesh path has a particle size of 250 ⁇ m or less
- the 65 mesh path has Particle size 200 ⁇ m or less
- 80 mesh pass particle size 180 m or less 100 mesh pass particle size 150 m or less
- Spurs have a particle size of 63 ⁇ m or less. The same applies to the following meshes.
- the exothermic composition may be a powder or granular exothermic composition depending on the moisture adjustment state and the amount of excess water.
- An exothermic mixture is an iron powder, a carbon component, a reaction accelerator, and water as essential components, a water content of 1 to 30% by weight, and a mobile water value of less than 0.01.
- the temperature of the reaction mixture after contact is maintained at 40 ° C or higher for 2 seconds or longer. It is sufficient if the reaction mixture is changed in some characteristics by the oxidizing gas contact treatment.
- the iron powder does not necessarily need to be oxidized, but is preferably oxidized. In that case, it is preferable that the iron powder becomes active iron powder.
- the active exothermic composition is an exothermic composition corresponding to any one of the following 1-3.
- Iron powder, carbon component, reaction accelerator, water are essential components, the water content is 1-30% by weight, and the mobile water value is less than 0.01. At this time, the temperature of the reaction mixing part is kept at 40 ° C or more for 2 seconds or more, or the mixture of the oxidizing gas and the contact-treated mixture is added with water or a reaction accelerator aqueous solution to adjust the water content.
- Iron powder, carbon component, reaction accelerator, water are essential components, and iron powder containing 20 to: LOO% of active iron powder is used.
- the moldable exothermic composition contains iron powder, a carbon component, a reaction accelerator, and water as essential components, and includes an agglomeration aid, an aggregating agent, an agglomeration aid, a dry binder, a dry binder, and a dry agent. Does not contain dry binders, adhesive materials, thickeners and excipients, has surplus water with a mobile water value of 0.01 to 20, has moldability with surplus water as a connecting substance, and has an exothermic composition It is an exothermic composition that does not function as a barrier layer and causes an exothermic reaction when in contact with air.
- the at least one wrapping force at 25 ° C is preferably 400 gZmm 2 or more.
- the thickness of the packaging material is not limited as long as the elongation at break is ensured, but is preferably 10 ⁇ m or more, more preferably 10 to 500 ⁇ m, and further preferably 10 to 300/300. ⁇ ⁇ , more preferably 10 to 250 / ⁇ ⁇ , more preferably 50 to 250 ⁇ m.
- a preferred example is a laminate of a nonwoven fabric and a thermoplastic resin film-like material.
- At least one packaging material is a laminate of a fibrous material and a film-like material, and is a heat-sealable and flexible material. is there. Further, it has a breaking strength of 500 gZ mm 2 or more in an environment of at least 25 to 60 ° C. and has a breaking elongation of 100% or more at 90 ° C.
- the segment heating element containing the heating composition molded body or the heating string composite compression body that is the compression body is present while the bending resistance is high, and generates heat.
- exothermic composition molded body It does not contain a composition molded body or a compressed exothermic composition (hereinafter referred to as exothermic composition molded body), and the section that is a heat seal portion has low bending resistance.
- the heating section consisting of the section heating section and the section can maintain the bending resistance between about 0 ° C force and about 80 ° C, so the section functions as a hinge and takes precedence over the section heating section. Bend.
- a heating element consisting of a section heating section and a section section has a section functioning as a hinge at least from room temperature to heating (about 23 to about 50 ° C), and bends preferentially over the section heating section. The good stiffness difference during heating is still maintained. As a result, the heating element maintains the structural support of the section heating part and has sufficient rigidity during manufacture or use. On the other hand, it still maintains excellent bending resistance when heated.
- a heating element using the packaging material as at least one of a base material and a covering material is obtained by laminating a heating composition composition on a substantially planar base material and covering the covering material with the heating composition composition.
- the packaging material when used as a covering material, it is flexible and breaks at 25 ° C at 25 to 60 ° C. Since the strength is 500 gZmm 2 or more, it is stiff, but it is stiff and can reliably cover the exothermic composition. Furthermore, when heat-sealing, 100% or less at 90 ° C Since it has the above elongation at break, it is possible to form a reliable heat-sealed portion without breaking the seal without breaking the coating material due to the temperature at the time of heat-sealing.
- the exothermic composition of the present invention having a heat generating portion composed of a divided heat generating portion that contains the exothermic composition molded body and a section portion that does not contain the exothermic composition molded body or a heat generating composition compressed body that is a compressed body thereof.
- the segmented heat generating part exists in the meantime when the bending resistance is high, does not contain the exothermic composition molded body or the compressed heat generating composition compressed body, and the sectioned part that is the heat sealing part has a bending resistance. Low.
- the heat generating part which is also the heat generating part and the parting force, can maintain the bending resistance between about 0 ° C force and about 80 ° C, so the dividing part functions as a hinge, giving priority to the heat generating part.
- the exothermic material is laminated on a substantially flat substrate.
- a packaging material usually a coating material
- a breaking elongation at 90 ° C of 100% or more usually a coating material
- the exothermic material is laminated on a substantially flat substrate.
- the breathable coating material used in the above examples is an inelastic material having a permanent elongation of 0.5% to 1.7% between 25 and 60 ° C in all examples, and at 25 ° C.
- the laminate had a breaking strength of 400 gZm m 2 or more and a breaking elongation of 20% or more at 90 ° C.
- the 60 ° C seal strength refers to a 25 mm x 250 mm test piece taken from the location where the seal strength of the sealed target sample is measured, left in a 60 ° C environment for 5 minutes, and then used in a 60 ° C environment.
- the measurement of the maximum strength at a distance of 10 mm and a tensile speed of 300 mmZmin was performed on three samples, and the average value of each maximum value.
- the seal strength under the 20 ° C environment is the same as the 60 ° C seal strength condition except that the measurement environment temperature is 20 ° C.
- the sealing strength of the temporary attachment portion is preferably 0.5 kgZ25 mm or more, more preferably 0.5 to LkgZ25 mm, and further preferably 0.5 to 0.9 kg / 20 ° C. in an environment of 20 ° C. 25 mm, and more preferably 0.5 to 0.8 kgZ25 mm. Also 60.
- the C seal strength is preferably less than 0.8 kgZ25 mm, more preferably less than 0.01 to 0.8 kg / 25 mm, still more preferably less than 0.01 to 0.5 kgZ25 mm, and even more preferably 0. 01 ⁇ 0.4 Less than 4kgZ25mm.
- the adhesive layer of the temporary attachment part is composed of an adhesive and has a 60 ° C seal strength of 0.01 to 0.8 kg / 25 mm, which stops the movement of the exothermic composition molded body between the substrate and the coating material. Capable of high-speed heat sealing. Furthermore, you may heat at the time of temporary attachment if desired. The heating is preferably performed under pressure at a temperature equal to or lower than the melting point of the base polymer in the hot melt pressure-sensitive adhesive forming the pressure-sensitive adhesive layer.
- the seal strength at 20 ° C in the heat-sealed part heat-sealed after temporary attachment is preferably 1. OkgZ25mm or more, more preferably 1.2kgZ25mm or more, and even more preferably 1.5kgZ25mm or more. More preferably, it is 1.5 to 3 kgZ25 mm.
- the 60 ° C seal strength in an environment of 60 ° C is preferably 0.8 kgZ25 mm or more, more preferably 1. OkgZ25 mm or more, further preferably 1.2 kgZ25 mm or more, more preferably 1. 5kgZ25mm or more.
- the material constituting the base material and the covering material is not limited as long as it functions as a storage bag for the exothermic composition.
- the materials usually used for chemical warmers and heating elements can be used.
- non-breathable material, breathable material, water-absorbing material, non-water-absorbing material, non-stretchable material, stretchable material, stretchable material, non-stretchable material, foamed material, non-foamed material, non-heat seal examples include heat-resistant materials, heat-sealable materials, etc., and can be used as appropriate according to the desired application in the desired form of films, sheets, non-woven fabrics, woven fabrics, etc. and their composites.
- the covering material may be a force that also acts as a breathable film, sheet, or non-woven fabric, or vice versa. Further, the flooring material may be properly used for air permeability and non-air permeability.
- the packaging material of the storage bag may be a single layer structure or a multilayer structure, and there is no limitation on the structure.
- the packaging material is at least a base material and a covering material, but the packaging material on which the exothermic composition molded body is laminated is the base material, and the packaging material covered on the exothermic composition molded body is the covering material, and the ventilation Sexual Rinashi does not matter.
- the base material will be A layer ZB layer or A layer ZB layer ZC layer or A layer.
- Layer A is a thermoplastic resin film such as polyethylene, heat seal layer such as polyethylene and EVA, and water-absorbing paper.
- Layer B is a nonwoven fabric of thermoplastic resin such as nylon, non-water-absorbing paper, and water-absorbing paper. Paper, polyethylene film, polypropylene film, polyester film, thermoplastic resin film such as polyamide (nylon, etc.) film, core material such as non-water absorbent paper and water absorbent paper, etc.
- thermoplastic resin film such as polyethylene, non-slip layer, non-woven fabric of thermoplastic resin such as polyester and nylon
- D layer is separator
- thermoplastic resin film such as polyethylene
- non-woven fabric E layer is a heat seal layer
- F layer is a thermoplastic resin porous film or perforated film such as polyethylene, polyethylene or other thermoplastic resin film, non-water absorbent paper , Absorbent paper, etc.
- G layer nonwoven thermoplastic ⁇ such as polyester and nylon
- H layer non-water-absorbing sheet such a water-absorbent paper, and the like.
- base materials or coating materials include polyethylene heat seal layer / polypropylene film, polyethylene heat seal layer / polypropylene film, E
- each layer may be laminated directly by hot-melt extrusion or the like, which may be laminated via a breathable pressure-sensitive adhesive layer or a laminating agent layer.
- polyethylene produced using a metallocene catalyst is also included in polyethylene.
- the above materials such as a nonwoven fabric and a porous film are laminated via a breathable adhesive layer.
- the air-permeable adhesive layer is formed by fiberizing the adhesive substance by an appropriate method such as a curtain spray method, a melt blow method, or a slot spray method in which the adhesive material is blown and unfolded through hot air while being heated and melted.
- An example is a method in which a porous film, a breathable base material, a separator, etc. are spread and deposited on an appropriate support base material to form a porous adhesive layer.
- the thickness of the base material, the covering material, the laying material, and the material composing them is not greatly limited depending on the application. Usually, it is 5 to 5000 111, preferably 10 to 500 / ⁇ ⁇ , more preferably 20 to 250 ⁇ m.
- the non-breathable material is not limited as long as it has non-breathability.
- Polyethylene, polypropylene, nylon, acrylic, polyester, polyvinyl alcohol, ethylene monoacetate copolymer, and other films, sheets, and coatings that have polymer strength, and metal (including semiconductor) compounds such as silicon oxide are laminated on them. Examples of these materials and composite materials using them are examples.
- examples of the highly non-breathable film include those in which a thin film of a metal or a compound containing a semiconductor is provided on a non-breathable material film in a single layer or multiple layers.
- examples of the metal containing a semiconductor include silicon, aluminum and the like, alloys and mixtures containing these metals.
- examples of the metal compound including a semiconductor include oxides, nitrides, and oxynitrides of the above metals, alloys, and mixtures.
- a layer of polyester oxide, a layer of aluminum oxide, a layer of silicon oxynitride or any of these layers on a polyester film, and a layer of expanded polyolefin film (for example, biaxially stretched polypropylene film) This is an example.
- the breathable material is not limited as long as it has breathability.
- a breathable film such as a porous film and a perforated film, paper, non-woven fabric, etc. having air permeability alone, paper, and a breathable film, non-woven fabric, etc. are laminated to have air permeability.
- a non-breathable packaging material in which a polyethylene film is laminated to a non-woven fabric, with a fine hole using a needle or the like to make it breathable, or fibers are laminated and thermocompression bonded for breathability Controlled non-woven fabric, porous film, or non-woven fabric on porous film
- the perforated film is a non-breathable film such as a polyethylene film provided with fine holes with a needle so as to be breathable.
- breathability is not limited as long as heat generation can be maintained.
- breathability is moisture permeability by the Lissy method (Lyssy method), usually 50 ⁇ : LO, 000g / mV24hr, preferably 70 ⁇ 5, OOOgZm so 24hr, and more preferably 100 ⁇ 2, OOOg Zm 2 Z24hr, more preferably from 100 ⁇ 700gZm 2 Z24hr.
- the moisture permeability is less than 50, the amount of heat generated is small and a sufficient heating effect cannot be obtained, which is not preferable. On the other hand, if it exceeds 10,000 gZm 2 Z24hr, the heat generation temperature becomes high, causing a safety problem. Since fear arises, it is not preferable. However, depending on the application, there are no restrictions on the use of more than 100000 gZm 2 Z24hr, or in some cases the moisture permeability close to that of an open system.
- the stretchable packaging material is not particularly limited as long as it has stretchability. That is, as a whole, it may be a single product as long as it has stretchability, or a composite product composed of stretchable substrates or a combination of a stretchable substrate and a non-stretchable substrate.
- natural rubber recycled rubber, synthetic rubber, elastomers, stretchable shape memory polymers, etc., or mixtures thereof, blends of these with non-stretch materials, mixed products, and combinations of these.
- examples include woven fabrics, films, yarns, strands, ribbons, tapes, scrim-structured films.
- the porous film is not limited, but it can also be a filler material such as polyethylene, polyolefins such as linear low density polyethylene and polypropylene, fluorine resins such as polytetrafluoroethylene, and the like.
- a porous film obtained by stretching a film can be selected as appropriate.
- the non-woven fabric is not limited, but may be a single fiber or a composite fiber having material strength such as rayon, nylon (polyamide), polyester, acrylic, polypropylene, vinylon, polyethylene, polyurethane, cupra, cotton, cell mouth, norp.
- a single non-woven fabric or a mixture of these fibers or a stack of cumulative fiber layers is used.
- dry non-woven fabric, wet non-woven fabric, spunbond, spunlace, etc. can be used in the manufacturing process. Is it a core-sheath composite fiber?
- a non-woven fabric may be used.
- the non-woven fabric that contacts the skin is preferably a brushed non-woven fabric.
- a stretchable nonwoven fabric and a non-stretchable nonwoven fabric can also be used.
- the water-absorbing material is not particularly limited as long as it has a water-absorbing film-like shape and a sheet-like shape.
- the water-absorbing material is not particularly limited as long as the material itself has water-absorbing property, regardless of whether the material itself has water-absorbing force.
- a foam film having a water absorption sheet (foamed body such as a water absorbent foam polyurethane) or papers, a nonwoven fabric or a woven fabric formed of fibers having a water absorption property, or a water absorption property.
- water-absorbing materials such as non-woven fabrics and woven fabrics containing fibers or water-absorbing porous films and sheets, foamed films and sheets, non-woven fabrics, woven fabrics or porous films, regardless of whether or not they absorb water, Containing, impregnating, kneading, transferring or supporting an agent to impart or increase water absorption, or with or without water absorption, foamed film 'sheet, paper, nonwoven fabric, woven fabric or porous film' sheet Water-absorbing foam film cut into a planar shape of the present invention 'sheet, paper, nonwoven fabric, woven fabric or porous film' water-absorbing material such as sheet is applied to one or both sides of the present invention to absorb water Is granted Things like we are.
- the surface in contact with the skin is a comfortable surface such as water absorption against sweat, etc., so that when sweating, sweat is absorbed, the surface in contact with the skin.
- the packaging material is composed of a non-woven fabric or a woven fabric mainly composed of water-absorbing fibers having a water retention rate of 20% or more. As a water-absorbing fiber with a water retention rate of 20% or more
- Cotton, silk, hemp, wool, polyacrylonitrile synthetic fiber, polyamide synthetic fiber, polyvinyl alcohol synthetic fiber, acetate fiber, triacetate fiber, regenerated fiber, etc. can be exemplified.
- a nonwoven fabric excellent in water absorption a nonwoven fabric in which a highly water-absorbing polymer is held on a nonwoven fabric can be used.
- the nonwoven fabric or woven fabric which has these fibers as a main component is also a thing with a comparatively favorable touch with respect to skin.
- a highly water-absorbing packaging material with high sweat absorbability can also be used as the packaging material.
- a non-woven fabric containing fibers coated with a superabsorbent resin on the surface a non-woven fabric containing fibers that are hollow and have a large number of micropores on the surface, a cross-sectional shape such as a large number of sac or multiple layers, etc.
- a non-woven fabric including a fiber having a capillary action by being formed is used.
- a nonwoven fabric or a film in which a water-absorbing inorganic compound is held can be used for the non-adhesive surface packaging material.
- a nonwoven fabric in which a powder of diatomaceous earth, zeolite, silica gel or the like is held in a nonwoven fabric, a film in which a relatively large amount of powder of silica, alumina or the like is held in a synthetic resin such as polyethylene can be used.
- the fixing means is not limited as long as it has a fixing ability capable of fixing a thermal packaging body for a joint peripheral part or a heating part to a required part.
- Adhesive layers, key hooks, hook buttons, hook-and-loop fasteners such as berg mouths, magnets, bands, strings, etc., and combinations thereof, which are generally employed as the fixing means, can be arbitrarily used.
- the adjustment fixing means may be further constituted by a combination of a hook-and-loop fastener and an adhesive layer.
- the hook-and-loop fastener is known by a trade name such as Velcro (registered trademark), Velcro fastener (registered trademark), Berg mouth fastener, hook-and-loop tape, and the like. It has a fastening function in combination with a hook that is a male fastener that can be fastened with a female fastener.
- the loop function include non-woven fabrics, woven fabrics of yarn having fluff and traps, and the like. Even if the core material forming the band is coated with the loop function (female fastener function). It ’s okay, but you can make up the band by itself!
- the hook member which is a male fastener member, is not particularly limited, but examples thereof include those formed by a polyolefin resin such as polyethylene and polypropylene, polyamide, polyester and the like.
- the shape of the hook is not particularly limited, but hooks with a cross-sectional shape of I shape, inverted L shape, shape, so-called mushroom shape, etc. are easily caught on the loop and extremely hard on the skin. This is preferable in that it does not give a sense of irritation.
- the hook may be adhered to the entire area of the fastening tape, or the tape substrate may be omitted and only the hook may be used as the fastening tape.
- the pressure-sensitive adhesive layer includes a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organic key compound, a hydrophobic polymer compound, a pyroelectric substance, an antioxidant, an aggregate, a fibrous material, a moisturizing agent, Functional substance or mixture power of these additional ingredients Power at least one selected Contain it.
- the pressure-sensitive adhesives of the present invention are classified into non-hydrophilic pressure-sensitive adhesives, mixed pressure-sensitive adhesives, and hydrophilic pressure-sensitive adhesives (Giel etc.).
- the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not limited as long as it has an adhesive force necessary to adhere to the skin or clothes. Solvent type, aqueous type, emulsion type, hot melt type, reactivity, sensitivity Various forms such as a pressure system, a non-hydrophilic adhesive, and a hydrophilic adhesive are used.
- the pressure-sensitive adhesive layer includes a non-hydrophilic pressure-sensitive adhesive layer composed of the non-hydrophilic pressure-sensitive adhesive and a non-hydrophilic pressure-sensitive adhesive layer composed of the non-hydrophilic pressure-sensitive adhesive.
- the non-hydrophilic pressure-sensitive adhesive layer containing a water-absorbing polymer or a water retention agent is treated as a non-hydrophilic pressure-sensitive adhesive layer.
- a hot melt adhesive may be provided between the hydrophilic adhesive layer and the substrate or the covering material.
- hydrophilic adhesive is provided on the thermal package for the joint periphery. After the sealing process of the thermal package for the joint periphery, a hydrophilic adhesive layer is provided on the thermal package for the joint periphery. Also good.
- the pressure-sensitive adhesive layer may be air permeable or non-air permeable. What is necessary is just to select suitably according to a use. As for air permeability, it is only necessary to have air permeability as a whole.
- a pressure-sensitive adhesive layer in which a pressure-sensitive adhesive is partially present and a part in which a pressure-sensitive adhesive is not present is present, and the entire region is breathable can be given as an example.
- the method of maintaining the breathability is, for example, by printing the adhesive or transferring the adhesive layer partially.
- the non-laminated part is used as a ventilation part, and the adhesive is moved in one direction or zigzag while drawing a circle in the shape of a thread.
- Examples include a method in which the gap between the thread-like adhesives has air permeability or moisture permeability, a method of foaming the adhesive, or a layer formed by a melt blow method.
- Adhesives that make up the non-hydrophilic adhesive layer are acrylic adhesives and vinyl acetate adhesives ( Butyl acetate resin emulsion, ethylene-acetate resin hot melt adhesive), polyvinyl alcohol adhesive, polyvinylacetal adhesive, vinyl chloride adhesive, polyamide adhesive, polyethylene adhesive, cellulose Adhesives, black-opened (neoprene) adhesives, nitrile rubber adhesives, polysulfide adhesives, butyl rubber adhesives, silicone rubber adhesives, styrene adhesives (for example, styrene hot melt adhesives) ), Rubber adhesives, silicone adhesives, and the like.
- rubber adhesives, acrylic adhesives or hot melt adhesives are high because of their high adhesive strength, low cost, good long-term stability, and little decrease in adhesive strength even when heated. Adhesives containing molecular substances are desirable.
- the pressure-sensitive adhesive may optionally contain other components such as rosin, coumarone indene resin, hydrogenated petroleum resin, maleic anhydride-modified rosin, rosin derivatives or C5 petroleum oil.
- Oil tackifiers such as petroleum spheroids represented by alicyclic petroleum resins such as fats, and phenol tackifiers such as terpene phenolic rosins, rosin phenolic rosins, alkylphenolic terrestrial resins (especially -Tackifiers with a phosphorus point of 50 ° C or lower), coconut oil, castor oil, olive oil, camellia oil, liquid paraffin and other softeners, softeners, anti-aging agents, fillers, aggregates, adhesion regulators, Adhesion improvers, colorants, antifoaming agents, thickeners, modifiers and the like may be added as appropriate to improve performance such as improving the adhesion to nylon clothing and blended fabric clothing.
- hot melt pressure-sensitive adhesive examples include known hot-melt pressure-sensitive adhesives that have been given tackiness.
- BB A-type block co-polymers such as SIS, SBS, SEBS, or SIPS can be used.
- Styrenic adhesives based on polymers chlorinated adhesives based on salt-bulb resin, polyester adhesives based on polyester, polyamide adhesives based on polyamide , Acrylic adhesives based on acrylic resin based on acrylic resin, polyolefin adhesives based on polyolefins such as polyethylene, ultra-low density polyethylene, polypropylene, ethylene ⁇ -olefin, and ethylene acetate butyl copolymer, 1 , 2—Polybutadiene-based polymer 1, 2-polybutadiene adhesive or polyurethane Polyurethane adhesives shall be the base polymer Tan, or those modified products with different adhesion improvement and stability A pressure-sensitive adhesive or a mixture of two or more of these pressure-sensitive adhesives can be used. Moreover, an adhesive layer composed of a foamed adhesive or an adhesive layer composed of a crosslinked adhesive can also be used.
- the non-aromatic hot-melt pressure-sensitive adhesive is not particularly limited as long as the base polymer does not contain an aromatic ring.
- olefin-based hot melt adhesives include acrylic hot melt adhesives.
- Non-aromatic polymers that do not contain aromatic rings and are base polymers include polymers such as olefins and gens.
- One example is an olefin polymer.
- the olefin-based polymer is a polymer or copolymer of ethylene or ⁇ -olefin. Also, other monomers, such as butadiene and isoprene, may be added.
- ⁇ -olefin examples include, but are not limited to, propylene, butene, heptene, hexene, otaten and the like as long as the monomer has a double bond at the terminal.
- Aromatic hot melt adhesives are hot melt adhesives whose base polymer contains an aromatic ring, such as styrene hot melt adhesives such as ⁇ - ⁇ - ⁇ block copolymers. Is given as an example.
- the A block is a monovinyl-substituted aromatic compound A such as styrene or methylstyrene, which is an inelastic polymer block
- the B block is a conjugate of conjugated gen such as butane or isoprene.
- conjugated gen such as butane or isoprene.
- SBS styrene butadiene styrene block copolymer
- SIS styrene isoprene styrene block copolymer
- SEBS hydrogenated types
- a pressure-sensitive adhesive layer in which a water-absorbing polymer is further blended with the non-hydrophilic pressure-sensitive adhesive can be used as a measure for preventing a decrease in pressure-sensitive adhesive force due to an increase in water content of the non-hydrophilic pressure-sensitive adhesive layer.
- the hydrophilic pressure-sensitive adhesive that constitutes the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has a hydrophilic polymer or a water-soluble polymer as a main component, has adhesiveness, and is hydrophilic as the pressure-sensitive adhesive.
- hydrophilic polymers such as polyacrylic acid, water-soluble polymers such as sodium polyacrylate and polyvinylpyrrolidone, and dry aluminum hydroxide.
- Cross-linking agents such as metal metasilicate aluminate, softeners such as glycerin and propylene glycol, higher hydrocarbons such as light liquid paraffin polybutene and primary alcohol fatty acid esters such as isopropyl myristate, silicone Oil-containing compounds such as oils, fatty acid glycerin esters such as monoglycerides, oily components such as vegetable oils such as olive oil, preservatives such as methyl noroxybenzoate and propyl parabenzoate, N-methyl-2- Solubilizers such as pyrrolidone, thickeners such as carboxymethylcellulose, surfactants such as polyoxyethylene hydrogenated castor oil sorbitan fatty acid ester, oxycarboxylic acids such as tartaric acid, light anhydrous caus
- moisturizers such as D-sorbitol, sodium edetate and para Stabilizer such carboxy acid esters and tartaric acid, crosslinked water-absorbing polymers, boron compounds such as boric acid, water and the like as an example. Also, any combination of these forces can be configured.
- the temporary sealing part is formed through an adhesive layer, but the adhesive constituting the adhesive layer is a layer formed of a polymer composition having tack at normal temperature, and it is limited if heat sealing can be performed after temporary attachment. Not sure.
- the adhesive of the said adhesive layer can be used for the adhesive which comprises the adhesive layer used for temporary attachment.
- a non-hydrophilic adhesive is preferred.
- the adhesive constituting the adhesive layer preferably has a melting point of the base polymer of the adhesive that has good compatibility with the heat seal material constituting the heat seal, and is lower than the melting point of the heat seal material.
- a hot-melt adhesive is preferable for the hot-melt adhesive.
- the heat seal material is an olefin-based material
- an olefin-based pressure-sensitive adhesive is preferred as an example of the pressure-sensitive adhesive.
- the adhesive layer for fixing the air flow adjusting material is composed of a commonly used adhesive or pressure-sensitive adhesive.
- the pressure-sensitive adhesive is useful, and the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer can be used.
- the method of providing the adhesive layer may be provided on the entire surface as long as the air flow adjusting material can be fixed, or may be provided partially or intermittently.
- Various shapes such as a net shape, a stripe shape, a dot shape, and a belt shape are listed as examples.
- the adhesive layer is a hydrophilic adhesive layer
- a packaging material such as a base material between them Moisture movement takes place via both, and inconvenience occurs for both. This happens especially during storage.
- the packaging material interposed between them preferably has a moisture permeability of at least 2 g / m 2 / day in terms of moisture permeability according to the Lissy method (Lyssy method).
- the moisture permeability of the moisture-proof packaging material provided between the exothermic composition molded body and the hydrophilic pressure-sensitive adhesive layer is within the range that does not affect the heat generation performance. is not limited as long prevent minute movement, in moisture permeability by Ritsushi one method (Lyssy method), usually, it is 2gZm 2 Zday less, preferably not more than 1. 0gZm 2 Zday, more preferably 0. 5GZm 2 Zday or less, and more preferably 0.01 to 0.5 gZm 2 Zday.
- the values are under the conditions of 40 ° C and 90% RH under atmospheric pressure.
- the moisture-proof packaging material can be used as a base material or a coating material, or can be laminated alone on a base material or a coating material.
- the moisture-proof packaging material is not limited as long as moisture transfer between the exothermic composition molded body and the hydrophilic pressure-sensitive adhesive layer can be prevented.
- Non-breathable packaging material flexible plastic made by vacuum deposition or sputtering of metal such as aluminum foil on a polyester film base film, metal foil such as aluminum foil, and polyester film substrate Laminate for packaging using a transparent barrier film with a structure in which silicon oxide and aluminum oxide are provided on the base material
- metal such as aluminum foil
- metal foil such as aluminum foil
- polyester film substrate Laminate for packaging using a transparent barrier film with a structure in which silicon oxide and aluminum oxide are provided on the base material
- a non-breathable packaging material used for the outer bag or the like can also be used.
- a packaging material such as a moisture-proof packaging material disclosed in Japanese Patent Application Laid-Open No. 2002-200108 can also be used, and the contents of this description are incorporated in the present invention.
- a reaction accelerator such as sodium chloride in the heat generating composition is used to adjust the water balance between the heat generating composition and the pressure sensitive adhesive layer.
- the water-absorbing polymer, etc. in the range of 10 to 40% by weight, preferably 15 to 40% by weight, more preferably 15 to 30% by weight of the exothermic composition. You can adjust the weight percentage range!
- a pressure-sensitive adhesive having good moisture permeability and low irritation to the skin a water-containing pressure-sensitive adhesive (hydrophilic pressure-sensitive adhesive, Jewel) such as JP-A-10-265373 and JP-A-987173 can be used.
- JP-A-6-199660 hot-melt-adhesive adhesives are disclosed in JP-A-10-279466 and in JP-A-10-182408. Agents are also useful, citing each of these references, the entire text is incorporated herein.
- the functional substance to be included in the pressure-sensitive adhesive layer is not limited as long as it is a substance having a function, but it is a fragrance compound, a plant extract, a herbal medicine, a fragrance, a slimming agent, an analgesic, a blood circulation promoter, a swelling improving agent, Antibacterial agent, bactericidal agent, fungicide, deodorant, deodorant, transdermal drug, fat decomposition component, negative ion generator, far-infrared radiator, magnetic substance, poultice, cosmetics, bamboo vinegar Alternatively, at least one selected from wood vinegar and the like can be cited as an example.
- aromatic compounds such as menthol and benzaldehyde, plant extracts such as mugwort extract, herbal medicines such as mogusa, fragrances such as lavender and rosemary, slimming agents such as aminophylline and tea eks, indomethacin, dl—
- Analgesics such as camphor, blood circulation promoters such as acidic mucopolysaccharides, force mitre, swelling improvement agents such as citrus tincture and flavone derivatives, poultices such as boric acid water, physiological saline, alcohol water, Lipolytic components such as caffeine and tonaline, aloe extract, vitamins, hormones, antihistamines, cosmetics such as amino acids, carboxylic acid derivatives, boric acid, iodine agents, reverse sarcolic acid, salicylic acid substances, iow Examples include antibacterial agents such as antibiotics, bactericides, and fungicides.
- the percutaneously absorbable drug is not particularly limited as long as it is percutaneously absorbable, but corticosteroids, anti-inflammatory analgesics, hypertensives, anesthetics, hypnotic sedatives, and psycholeptics.
- the content of the functional substance is not particularly limited as long as the medicinal effect can be expected. However, the content of the functional substance is not limited from the viewpoints of pharmacological effect, economic efficiency, adhesive strength, and the like. Preferably it is 0.01-25 weight part with respect to 100 weight part of agents, More preferably, it is 0.5-15 weight part.
- the method for providing the adhesive layer may be provided on the entire surface as long as the thermal package for the joint periphery can be fixed, or may be provided partially or intermittently.
- Various shapes such as a net shape, a stripe shape, a dot shape, and a belt shape can be given as examples.
- the maximum width of the segmented heat generating portion or the heat generating composition molded body of the present invention is usually 0.5 to 60 mm, preferably 0.5 to 50 mm, more preferably 1 to 50 mm, and still more preferable. Or 3 to 50 mm, more preferably 3 to 30 mm, still more preferably 5 to 20 mm, still more preferably 5 to 15 mm, and still more preferably 5 to 10 mm.
- the maximum height is usually 0.1 to 30 mm, preferably 0.1 to 10 mm, more preferably 0.3 to 10 mm, still more preferably 1 to 10 mm, and still more preferably. 2-10mm.
- the longest length is usually 5 to 300 mm, preferably 5 to 200 mm, more preferably 5 to: LOOmm, still more preferably 20 to 150 mm, still more preferably 30 to L00 mm. It is.
- the volume of the section heat generating portion or the volume of the exothermic composition molded body is usually from 0.015 to 500 cm 3 , preferably from 0.04 to 30 cm 3 , more preferably from 0.1 to 30 cm 3 . , more preferably from L ⁇ 30cm 3, more preferably from 3 ⁇ 20cm 3.
- the volume of the heat generating composition molded body, which is the heat generating composition molded area, and the heat generating composition storage area when the divided heat generating portion, which is a heat generating composition storage area, is filled with the heat generating composition molded body, the volume of the heat generating composition molded body, which is the heat generating composition molded area, and the heat generating composition storage area.
- the volume ratio with the volume of the divided heat generating portion is usually 0.6 to 1, preferably ⁇ or 0.7 to 1, more preferably ⁇ or 0.8 to 1, and further preferably ⁇ or 0.00. 9 to 1.0.
- the width of the divided portion which is the interval between the divided heat generating portions, is not limited as long as it can be divided.
- Force Usually 0.1 to 50 mm, preferably 0.3 to 50 mm, more preferably 0.3 to 50 mm. Yes, more preferably 0.3 to 40 mm, further preferably 0.5 to 30 mm, more preferably 1.0 to 20 mm, and further preferably 3 to 10 mm.
- shape of the exothermic composition molded body or the divided heat generating portion may be any shape, but examples thereof include a flat shape, such as a circle, an ellipse, a polygonal shape, a star shape, and a flower shape.
- shape An example is the shape.
- these shapes may be rounded at the corners, and the corners may be curved or curved, and there may be a recess in the center.
- the volume of the exothermic composition part molded body of the present invention means the volume of the exothermic composition molded body or the compressed exothermic composition molded body.
- volume of the segmented heat generating part means the internal volume of the segmented heat generating part containing the exothermic composition molded body.
- the shape of the heating element is not particularly limited, but is rectangular, circular, elliptical, polygonal, flat, eye mask shape, lantern shape, ridge shape, ridge shape, rounded round shape , Rounded square shape, egg shape, boomerang shape, maggot shape, wing shape, nose shape, star shape and foot shape.
- the heating element or the storage bag may be provided with at least one of at least one of letters, designs, symbols, numbers, patterns, photographs, pictures, and coloring.
- the heating element of the present invention can be obtained in various shapes, thicknesses, and temperature zones, outside of normal body warming, for joints, for facial use, for eyes, for slimming, drip solution heating / warming ,
- thermal compresses for drug warmers, for neck, for waist, for masks, for gloves, for heels, or for alleviating symptoms such as shoulder pain, muscle pain, or physical pain, for cushions, or during the operation
- It can be used for various purposes such as warming and warming, heating sheet, transpiration, aroma, abdomen, transpiration insecticide, and cancer treatment.
- machines can be used for warming and warming pets.
- the heating element of the present invention when used for symptom relief, is applied directly to a necessary part of the body or indirectly through a cloth or the like.
- the heating element of the present invention when used for warming the human body during surgery, is applied directly to a necessary part of the body or indirectly through a cloth or the like.
- Examples of usage include using as a cover or rug as a product with a heating element in advance.
- Examples of muscle and skeletal pain include acute muscle pain, acute skeletal pain, acute related pain, past muscle pain, past skeletal pain, chronic related pain, joint pain such as knees and elbows, and the like.
- the maintenance time is not limited, but is preferably 20 seconds to 24 hours, more preferably 1 hour to 24 hours, and still more preferably 8 hours to 24 hours.
- the maintenance temperature is preferably 30 to 50 ° C, more preferably 32 to 50 ° C, still more preferably 32 to 43 ° C, still more preferably 32 to 41 ° C, and further Preferably, it is 32 to 39 ° C.
- FIG. 1 is a plan view of a heating element according to an embodiment of the present invention.
- FIG. 3 Perspective view showing the manufacturing process
- FIG. 4 is a cross-sectional view of an embodiment of a heating element temporarily attached
- FIG. 5 is a plan view of another embodiment of the heating element of the present invention.
- FIG. 6 is a plan view of another embodiment of the heating element of the present invention.
- FIG. 8 (a) Perspective view of one embodiment of temporary roll (b) Side view
- FIG. 9 (a) Perspective view of another embodiment of temporary attachment roll (b) Cross-sectional view showing the relationship between the temporary attachment roll and the heating element (c) The relationship between the temporary attachment roll and the heating element (D) Partial perspective view of the temporary heating element (e) Partial sectional view of the temporary heating element having a slack
- FIG. 10 is a perspective view of another embodiment of a temporary dressing roll.
- FIG. 11 Plan view of another embodiment of a temporary roll.
- FIG. 13 is a plan view of another example of a temporary roll.
- FIG. 14 is a plan view of another embodiment of the temporary roll.
- FIG. 15 is a side view of a crushed plate of one embodiment of a section heating section of a heating element.
- FIG. 16 is a side view of an embodiment of a break roll of a heat generating section of a heating element.
- FIG. 17 (a), (b) Sectional view of one embodiment of a section of a heating element of a heating element or a part of the breaking process of the heating element.
- FIG. 18 Schematic diagram of one embodiment of a heating element manufacturing process
- FIG. 19 is a schematic view of another embodiment of the heating element manufacturing process.
- FIG. 21 is a perspective view for explaining the measurement of mobile water value.
- Rotating body forming device (Rotating body with a punched hole of desired shape)
- Non-water absorbent film polyethylene film, etc.
- Filter paper template with 8 lines drawn at 45 degree intervals radially from the center point
- the heating element 1 of the present invention has a heating composition molded body in a rectangular flat storage bag having a length of 13 Omm and a width of 80 mm as shown in the plan view of FIG. 1 and the ZZ cross-sectional view of FIG. 1 A is enclosed, and the storage bag is composed of a non-breathable base material 4 and a breathable covering material 5.
- a polyester release film cover having a thickness of 38 m is provided via an adhesive layer 9 having a basis weight of 150 gZm 2 which is a non-aromatic olefin-based hot melt adhesive force.
- a separator 13 is provided.
- the covering material 5 is a three-layer film having a stretchability of 130 mm in width. That is, a porous film having a basis weight of 50 gZm 2 is laminated on a polyester spunlace nonwoven fabric having a basis weight of 30 g / m 2 through a hot-melt adhesive layer having a basis weight of 5 gZm 2 provided by a melt blow method. It is a thing.
- the moisture permeability of the covering material 5 is 350 gZm 2 Z24 hr by the Lissi method.
- the heating element 1 is manufactured as shown in FIG.
- the covering material 5 wound in a roll is fed out, and an olefin-based hot melt adhesive is applied to the entire porous film surface side of the covering material 5 by a melt blow method.
- the hot melt pressure-sensitive adhesive layer 6 is brought into contact with the base material 4 so as to cover the exothermic composition molded body 1A, and the peripheral edge thereof is pressure-bonded to attach the temporary attachment portion 7.
- a heat seal roll heat seal the peripheral part of the heating element composition molded body 1 A together with the temporary attachment part 8 and cut it, and the seal width is 8 mm x thickness is about 0.94 mm x 130 mm x 80 mm.
- a thin heating element was produced.
- each of the cut heating elements 1 is continuously sent to the packaging process, and is enclosed in an airtight outer bag (not shown).
- the exothermic composition having moldability in this example, 70 parts by weight of iron powder (particle size: 300 ⁇ m or less), 10 parts by weight of activated carbon (particle size: 300 ⁇ m or less), 2 parts by weight of sodium chloride, water absorption Polymer (particle size of 300 / zm or less) 0.7 parts by weight and 0.1 parts by weight of slaked lime were added with water, and an exothermic composition having a mobile water value of 8 was used.
- the exothermic composition in this way, by setting the exothermic composition to an easy water value of 8, since no thickener is used, the exothermic characteristics are not sacrificed. In addition, it can be easily laminated at the center of the substrate by mold-through molding, and it can be laminated with high accuracy in the desired lamination area, and the thickness of the exothermic composition molded body 1A is extremely high. It becomes possible to control thinly and uniformly.
- the outer bag After enclosing in the outer bag, after 24 hours, the outer bag was broken and adhered to the surface of the human body. After normal use, the temperature was about 1 to 2 minutes. The temperature was raised to 38 ° C, and then heat was generated at 38-41 ° C for over 9 hours. During use, the exothermic composition molded body did not move at all in the container, and an average exotherm was observed over the entire surface.
- FIG. 5 shows an example of the heat generator 1 in which the divided heat generating portions 1B are arranged in 3 rows and 4 columns in the same manner as in the first embodiment.
- a perforation 12 is provided in the heat seal part 11. There was no seal failure.
- FIG. 6 is an example of a heating element 1 having a segment heating part 1B manufactured using the same base material 4, covering material 5 and heating composition as in Example 1.
- the base material 4 wound in the form of a roll with a width of 130 mm is fed out horizontally at 35 mZ, and is formed into a size of 110 mm x 70 mm x O.
- the exothermic composition molded bodies IB were arranged in 4 rows and 3 columns at intervals of 20 mm. From the top of the exothermic composition molded body 1B, a hot melt adhesive is applied to the porous film surface side with lgZm 2 by the melt blow method, and is adjacent to the base material 4 and the outer peripheral edge of the coating material. Temporary attachment was made between the section heating parts 1B. Then, after heat-sealing using three heat-sealing rollers, it was cut to produce an ultra-thin heating element with a thickness of about 0.94mm x 130mm x 80mm. As a result, there was no case defect
- Example 1 After sealing in the outer bag, 24 hours later, the outer bag is broken and sticks to the human body surface. In normal use, the same results as in Example 1 were obtained.
- the heating element of Example 4 was prepared by applying a hot melt pressure-sensitive adhesive on the base material and the heating composition molded body formed in the same manner as in Example 1 at lg / m 2 by the melt blowing method, The upper force is different from that of the covering material so that the porous film side is in contact with the covering material. Note that the same materials as in Example 1 were used for the base material, the covering material, and the exothermic composition.
- a heat generating component molded body having a width of 5 mm, a length of 110 mm, and a height of 3 mm, which is a total of 8 forces in 4 rows and 2 columns, was placed at intervals of 7 mm.
- a covering material was crimped with a width of 5 mm to provide a temporary attachment portion.
- the center part of the temporary attachment part was heat-sealed with a width of 1 mm, and at the same time, the outer peripheral part of the base material and the covering material was heat-sealed with a width of 8 mm to obtain a heating element having eight section heating parts.
- the heating temperature is about 38 ° in about 1-2 minutes. The temperature was raised to C, and thereafter heat was generated at 38 to 41 ° C for 10 hours or more.
- the exothermic composition molded body was flexible as a heating element that did not move at all within the container, was well adapted to the curved surface of the body, and an average exotherm was observed over the entire surface.
- FIG. 18 is a schematic diagram of a manufacturing process of a heating element including a temporary attachment process.
- the exothermic composition 2 is put into the hopper 15 while feeding the base material 4 from the feed roll 21 at 15 mZ. Then, it is formed on the belt conveyor 23 from the hopper 15 through the rotating body forming device 14 in the central part on the base material 4 at 110 mm ⁇ 70 mm and every 20 mm interval.
- the heat generating composition 2 is attracted by the magnet 37 provided under the upper belt of the belt conveyor 23 and is easily placed on the substrate 4.
- the roll and MD direction temporary attachment port The coating material 5 is coated on the base material 4 and the exothermic composition molded body by the tool 18.
- a hot melt adhesive is applied to the entire surface of the covering material 5 on the porous film side by a melt blower 24.
- the periphery of the exothermic composition molded body was heat-sealed with a width of 5 mm with a heat seal roll 18C, and the outer peripheral edge of the exothermic body was heat-sealed with a width of 8 mm.
- the cut heating element was subsequently sent to the packaging process and sealed in an outer bag having airtightness (not shown). Then, after enclosing in the outer bag, after 24 hours, the outer bag was broken and adhered to the human body surface, and when used, the same result as in Example 1 was obtained.
- a means for providing the air-permeable pressure-sensitive adhesive layer there can be used a melt blow method, a curtain rail method, or the like, which is not particularly limited as long as the air-permeable pressure-sensitive adhesive layer can be formed.
- the exothermic composition of this example includes 70 parts by weight of iron powder (particle size of 300 or less), 7 parts by weight of activated carbon (particle size of 300 or less), 2 parts by weight of salt, 0.7 part by weight of a water-absorbing polymer, wood powder 3
- An exothermic composition comprising 0 parts by weight, sodium sulfite 1.0 parts by weight, slaked lime 0.1 parts by weight and water 37 parts by weight was used.
- FIG. 19 is a new process for strengthening the heat sealing process shown in FIG. 18 and providing a breathable pressure-sensitive adhesive layer with a separator.
- a breathable pressure-sensitive adhesive layer 9A coated with a hot-melt pressure-sensitive adhesive silicone-treated polyester separator 13 by a melt-blowing method was laminated on the coating 5 in the roll 21A and cut with a die-cut roll 20. .
- a heating element was produced in the same manner as in Example 5.
- the exothermic composition of this example is 100 parts by weight of iron powder (particle size 300 m or less), activated carbon (particle size 300 / zm or less) 6.5 parts by weight, wood powder (particle size 150 m or less) 2.3 Part by weight, water-absorbing polymer (particle size 300 m or less) 2.3 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, 6 parts by weight of salt water With reaction mixture less than 0.01 Using a batch-type oxidizing gas contact treatment device, in an environment of 20 ° C, the upper part of the oxidizing gas contact treatment device is open, opened in the air, and after 120 seconds with stirring, the reaction mixture When the temperature rise of the solution reached 45 ° C, it was sealed in a non-breathable storage bag and cooled to room temperature to obtain an exothermic mixture of the present invention. Next, 6% saline was added to the exothermic mixture and mixed to obtain an exothermic composition having a mobile water value of
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- Resistance Heating (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006529117A JPWO2006006650A1 (ja) | 2004-07-14 | 2005-07-14 | 発熱体及び発熱体の製造方法 |
EP05765767A EP1782774A4 (en) | 2004-07-14 | 2005-07-14 | HEATING ELEMENT AND METHOD FOR PRODUCING THE HEATING ELEMENT |
US11/632,207 US20080202490A1 (en) | 2004-07-14 | 2005-07-14 | Heat Generating Body and Process For Producing Heat Generating Body |
CA002573276A CA2573276A1 (en) | 2004-07-14 | 2005-07-14 | Heat generating body and process for producing heat generating body |
Applications Claiming Priority (2)
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JP2004-207831 | 2004-07-14 | ||
JP2004207831 | 2004-07-14 |
Publications (1)
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WO2006006650A1 true WO2006006650A1 (ja) | 2006-01-19 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013003 WO2006006650A1 (ja) | 2004-07-14 | 2005-07-14 | 発熱体及び発熱体の製造方法 |
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Country | Link |
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US (1) | US20080202490A1 (ja) |
EP (1) | EP1782774A4 (ja) |
JP (1) | JPWO2006006650A1 (ja) |
CA (1) | CA2573276A1 (ja) |
WO (1) | WO2006006650A1 (ja) |
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Cited By (11)
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---|---|---|---|---|
JP2014533687A (ja) * | 2011-11-17 | 2014-12-15 | イム、ヘ ウンLIM, Hae Eun | 蚊毒素治療用の局所パッチ製剤 |
WO2016121780A1 (ja) * | 2015-01-29 | 2016-08-04 | 小林製薬株式会社 | 発熱具 |
JP2016140382A (ja) * | 2015-01-29 | 2016-08-08 | 桐灰化学株式会社 | 発熱具 |
CN104666073A (zh) * | 2015-03-18 | 2015-06-03 | 徐州市固医堂生物科技有限公司 | 一种自发热药用脊柱贴 |
WO2017191680A1 (ja) * | 2016-05-02 | 2017-11-09 | 小林製薬株式会社 | 発熱具 |
WO2017191681A1 (ja) * | 2016-05-02 | 2017-11-09 | 小林製薬株式会社 | 発熱具 |
JPWO2017191680A1 (ja) * | 2016-05-02 | 2019-03-14 | 小林製薬株式会社 | 発熱具 |
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CN106038261A (zh) * | 2016-05-30 | 2016-10-26 | 陈颉 | 自发热艾灸贴 |
CN106109081A (zh) * | 2016-06-22 | 2016-11-16 | 武汉大学 | 一种多功能关节热敷装置 |
CN111031972A (zh) * | 2017-06-15 | 2020-04-17 | 菲利克株式会社 | 温热体及其制造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20080202490A1 (en) | 2008-08-28 |
CA2573276A1 (en) | 2006-01-19 |
EP1782774A1 (en) | 2007-05-09 |
JPWO2006006650A1 (ja) | 2008-05-01 |
EP1782774A4 (en) | 2007-12-26 |
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