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WO2002030663A1 - Films plastiques, formulations stratifiés et procédé et appareil de fabrication correspondants - Google Patents

Films plastiques, formulations stratifiés et procédé et appareil de fabrication correspondants Download PDF

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Publication number
WO2002030663A1
WO2002030663A1 PCT/AU2001/001268 AU0101268W WO0230663A1 WO 2002030663 A1 WO2002030663 A1 WO 2002030663A1 AU 0101268 W AU0101268 W AU 0101268W WO 0230663 A1 WO0230663 A1 WO 0230663A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
layer
laminate
adhesive
weight
Prior art date
Application number
PCT/AU2001/001268
Other languages
English (en)
Inventor
John Driscoll
Original Assignee
Bodydreha Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPR0659A external-priority patent/AUPR065900A0/en
Priority claimed from AUPR0705A external-priority patent/AUPR070500A0/en
Application filed by Bodydreha Pty Ltd filed Critical Bodydreha Pty Ltd
Priority to AU2001295253A priority Critical patent/AU2001295253A1/en
Publication of WO2002030663A1 publication Critical patent/WO2002030663A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1276—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives water-based adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2398/00—Unspecified macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1875—Tensioning
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2314/00—Polymer mixtures characterised by way of preparation
    • C08L2314/06—Metallocene or single site catalysts

Definitions

  • This invention relates to plastics films, formulations for their manufacture, laminates and methods and apparatus for their manufacture .
  • the invention has particular but not exclusive application to laminates of the type used for roof and wall sarking or house wrap, and plastics films for such laminates. However, it will be appreciated that the invention is not limited to such use.
  • Laminates comprising a metal foil layer and a paper layer or paper product layer are commonly used as sarking in buildings for roof insulation or for house wrap in the wall cavity. Typically, the two layers are bonded together by an intermediate layer of hot melt adhesive. Suitable fire rating of such laminates may be achieved by including fire retardant materials in the adhesive. This practice makes the laminate undesirably heavy and undesirably expensive. In order to ameliorate the sagging problem an open mesh reinforcing fabric is also typically included between the metal foil and the paper layer, the reinforcing fabric normally being embedded in the adhesive.
  • hot melt adhesive is commonly used for bonding the metal foil layer to the paper layer
  • a water based adhesive the adhesive being able to dry successfully by evaporation and/or diffusion of the water content through and/or into the paper layer.
  • laminates comprising two layers of water impermeable materials bonded together by an intermediate layer of water based adhesive have not been successful, at least not for use as sarking or house wrap. Such laminates have been known to suffer from separation of the layers from one another which results in loss of strength and performance. Attempts at forming a laminate of two water impermeable layers separated by a paper layer have also not achieved the desired bonding strength.
  • One such laminate is disclosed in Australian Patent No.
  • 642742 which describes a laminate proposed for use as a reflective foil insulation comprising a first layer of metal foil bonded to one face of a layer of paper by a layer of water based adhesive intermediate the first metal foil layer and the paper layer and a second layer of metal foil bonded to the other face of the layer of paper by another layer of water-based adhesive intermediate the second metal foil layer and the other face of the paper layer.
  • One object of the present invention is to provide a laminate formed of two layers of water impermeable materials bonded together by a layer of water based adhesive which overcomes or at least ameliorates the aforementioned delamination problem. Another object is to provide a relatively light weight laminate which has desirable fire retardant properties. Another object is to provide a plastics film adapted to form a layer in a laminate which has improved fire retardant properties. Another object is to provide a plastic film adapted to form a layer in a laminate which has improved strength to weight ratio. Another object is to provide apparatus for manufacturing laminates. Unless the context requires otherwise, formulations set forth in this specification are by weight. Other objects of the invention may become apparent from the following description. In formulations having a range of proportions of constituent ingredients, unless otherwise specified, the proportion of the predominant ingredient is adjusted so that the summation of proportions achieves 100%.
  • this invention in one aspect resides broadly in a laminate for use as sarking in buildings, particularly dwelling houses, including: a layer of plastics material; a layer of metal foil bonded to the layer of plastics material by a layer of water based adhesive having substantially no free moisture .
  • this invention resides broadly in a laminate for use as sarking in buildings, particularly dwelling houses, including: a layer of plastics material; a layer of metallized plastics material bonded to the layer of plastics material by a layer of water based adhesive having substantially no free moisture.
  • this invention resides broadly in a laminate for use as sarking in buildings, particularly dwelling houses, including: a layer of plastics material; a layer of metal foil bonded to the layer of plastics material by a layer of water based adhesive, the water based adhesive having been dried to form a contact adhesive having substantially no free moisture prior to bonding of the layers .
  • this invention resides broadly in a laminate for use as sarking in buildings, particularly dwelling houses, including: a layer of plastics material; a layer of metallized plastics material bonded to the layer of plastics material by a layer of water based adhesive, the water based adhesive having been dried to form a contact adhesive having substantially no free moisture prior to bonding of the layers .
  • this invention resides broadly in a method of manufacturing a laminate including the steps of: providing a first film which is substantially water impermeable; providing a second film which is substantially water impermeable; applying a water based adhesive to one face of the first film; drying the water based adhesive to form a contact adhesive; forcing one face of the second film against the one face of the first film whereby the contact adhesive bonds the first and second films together to form a laminate.
  • the first film is a layer of plastics material and the second film is a metal foil, while in another form the first film is a layer of plastics material and the second film is a metallized plastics material.
  • the water based adhesive is a mixture comprising a suspension of polymer in an aqueous diluent and which forms a contact adhesive upon removal of water from the mixture.
  • the adhesive is a PVA type adhesive having about 50% by weight water.
  • this composition may be suitably dried to form a contact adhesive prior to bonding the plastic film to the other water impermeable film.
  • the invention resides broadly in a plastics formulation comprising: a linear low density polyolefin; a linear low density metallocene grade polyolefin in approximately equal quantity with the linear low density polyolefin; a low density polyolefin in the range of 4.5% to 5.5% by weight of the total; a linear carrier in the range of 3.5% to 4.5% by weight of the total, and a fire retardant in the range of 4.5% to 5.5%, the fire retardant being selected to retard the supply of oxygen to the surface of the plastics formulation when exposed to and/or in contact with fire.
  • the polyolefins are selected to provide a film suitable to be laminated to a paper, metal foil or metallized plastics film.
  • the linear carrier of the formulation is preferably provided as a coloured masterbatch which is used with the low density polyolefin in cross-linking of the plastics formulation.
  • the colour of the masterbatch may be selected to identify different plastics film products .
  • the fire retardant is a derivative of ammonium phosphate.
  • the fire retardant is predominantly ammonium polyphosphate .
  • the invention resides broadly in a plastics film comprising: a linear low density polyethylene in the range of 30% to 42% by weight; a linear low density metallocene grade polyethylene in the range of 39% to 51% by weight; a high density, high molecular weight polyethylene in the range of 5% ⁇ 0.5% by weight; a low density polyethylene in the range of 5% ⁇ 0.5% by weight; a linear carrier in the range of 4% ⁇ 0.4% by weight; and a fire retardant in the range of 4% to 10% by weight.
  • the plastics film comprises: a linear low density polyethylene in the range of 31% to 41% by weight; a linear low density metallocene grade polyethylene in the range of 40% to 50% by weight; a high density, high molecular weight polyethylene in the range of 5% + 0.5% by weight; a low density polyethylene in the range of 5% ⁇ 0.5% by weight; a linear carrier in the range of 4% ⁇ 0.4% by weight; and a fire retardant in the range of 4% to 10% by weight.
  • the plastics film comprises: a linear low density polyethylene in the range of 33% to 39% by weight; a linear low density metallocene grade polyethylene in the range of 42% to 48% by weight; a high density, high molecular weight polyethylene in the range of 5% ⁇ 0.3% by weight; a low density polyethylene in the range of 5% ⁇ 0.3% by weight; a linear carrier in the range of 4% ⁇ 0.3% by weight; and a fire retardant in the range of 4% to 8% by weight.
  • the plastics film comprises: a linear low density polyethylene in the proportion of 36% by weight; a linear low density metallocene grade polyethylene in the proportion of 35% by weight; a high density, high molecular weight polyethylene in the proportion of 5% by weight; a low density polyethylene in the proportion of 5% by weight ; a linear carrier in the proportion of 4% by weight; and a fire retardant in the proportion of 5% by weight.
  • the film is co-extruded in two layers, one layer having more fire retardant than the other.
  • the low density polyethylene, the linear carrier and the fire retardant components are preferably maintained at least at the levels described in order that the film retains its desirable properties of strength and fire resistance.
  • a plastics film was formed by coextruding a plastics formulation having a first layer comprising:
  • the invention resides broadly in a laminate including a layer of plastics film as previously described and a layer of metal foil or a layer of metallised plastics material bonded to said layer of plastics film by a layer of water based adhesive having substantially no free moisture.
  • this invention resides broadly in apparatus for the manufacture of a laminate comprising a first layer of substantially water impermeable material and a second layer of substantially water impermeable material bonded together, including: first feed means for feeding a first film of substantially water impermeable material from a first roll for forming the first layer; second feed means for feeding a second film of substantially water impermeable material from a second roll for forming the second layer; application means downstream of the first feed means for applying a coating of water based adhesive to one face of the first film; drying means downstream of the application means for removing substantially all free moisture from the coating of water based adhesive; forcing means downstream of the drying means for forcing one face of the second film against the one face of the first film, to form a laminate with the first and second films being bonded by the adhesive; rolling means downstream of the forcing means for forming the laminate into a roll; and tensioning means operatively connected to the rolling means for maintaining a desired amount of tension on the laminate. Removal of the free water from the water based adhesive is believed to
  • this invention resides broadly in apparatus for the manufacture of a laminate comprising two layers of material bonded together, including: first feed means for feeding a first film of material from a first roll for forming one layer of the laminate ; second feed means for feeding a second film of material from a second roll for forming another layer of the laminate; third feed means for feeding a third film of material from a third roll for forming an alternative layer to the one or other layer of the laminate; application means downstream of the first feed means for applying a coating of adhesive selectively to one of one face of the first film and one face of the second film; forcing means downstream of the application means for selectively forcing one of one face of the second film against the one face of the first film to form a laminate with the first and second films being bonded by the adhesive and one face of the third film against one face of the first film to form a laminate with the first and third films being bonded by the adhesive; rolling means downstream of the forcing means for forming the laminate into a roll; and tensioning means operatively connected to the rolling means for maintaining
  • this invention resides broadly in apparatus for the manufacture of a laminate comprising two layers ⁇ of material bonded together, including: first feed means for feeding a first film of material from a first roll for forming one layer of the laminate ; second feed means for feeding a second film of material from a second roll for forming another layer of the laminate; third feed means for feeding a third film of material from a third roll for forming an alternative layer to the other layer of the laminate; application means downstream of the first feed means for applying a coating of adhesive selectively to one of one face of the first film and one face of the second film; first forcing means downstream of the application means for forcing one face of the second film against the one face of the first film to form a laminate with the first and second films being bonded by the adhesive; second forcing means downstream of the application means for forcing one face of the third film against one face of the first film as an alternative to the second film to form a laminate with the first and third films being bonded by the adhesive; rolling means downstream of the first and second forcing means for selectively forming the laminate into
  • the first and second feed means are in the form of rollers which have tensioning means operatively connected thereto and adapted to apply a desired amount of resistance to unrolling thereby applying tension to each of the first and second films respectively (and third film where provided) .
  • the application means includes a set of rollers adapted to apply adhesive to the one face of the first film in a manner similar to that by which the rollers of a flexographic printing machine apply ink to the article to be printed, the water based adhesive being suitably formulated for application in this manner.
  • the application means includes a reservoir suitably in the form of a trough for holding the water-based adhesive; an adhesive take-up roller arranged such that at least a portion of its roller surface is immersed in use in the adhesive; a trimming roller in operative rolling contact with the adhesive take-up roller whereby adhesive may be transferred from the take-up roller to the trimming roller; an application roller in operative rolling contact with the trimming roller whereby a film of adhesive of predetermined thickness may be transferred from the trimming roller to the application roller; and a driving roller arranged in operative rolling contact with the application roller whereby in use they may pull a film of plastics material or foil therebetween and whereby the application roller may apply adhesive to the one face of the first film.
  • this form of application means applies a suitably thin layer of adhesive to the one face of the first film.
  • the take up roller is much larger than the application roller thus allowing the apparatus to operate at a greater web speed.
  • the greater diameter allows the take up roller to operate at lower angular velocity for the same peripheral velocity and it is believed that the adhesive holds to the surface of the take up roller better at the lower angular velocity.
  • the drying means includes a blower and a heater connected to a duct for directing heated air onto the surface of the water-based adhesive on the one face of the first film, downstream of the application means .
  • the drying means is arranged to remove substantially all of the free water therein prior to the film reaching the forcing means so as to produce a contact adhesive extending evenly across the surface of the first film.
  • the adhesive is formulated to dry sufficiently in the period of run between the application means and the forcing means upon application of a predetermined amount of heat over a predetermined period.
  • the duct is arranged to direct heated air progressively along a length of the first film and evenly across its width. It is also preferred that the duct be arranged to direct heated air in countercurrent fashion to the direction of movement of the first film.
  • the forcing means includes a set of nip rollers arranged to force the first and second films or first and third films together as the case may be.
  • the forcing means also includes guide rollers suitably arranged to guide the relevant films onto and off the nip rollers as required.
  • the nip rollers be driven at a desired speed to pull the first and second or third films therebetween at a suitable linear speed.
  • the first feed means, the second feed means, the third feed means (where provided) , and the rolling means also be driven via slipping clutches, such that a desired tension is applied to the laminate and/or the first, second and third films as required.
  • the rolling means is driven at a no-load speed which is up to about 5% greater than the speed of the laminate leaving the nip rollers, and preferably between about 1% and 5% greater.
  • Fig. 1 is a diagrammatic side elevation of apparatus according to the present invention showing a first roll and alternative second and third feed rolls;
  • Fig. 2 is a diagrammatic side elevation of apparatus according to the present invention with the third feed roll removed, and
  • Fig. 3 is a diagrammatic side elevation of apparatus according to the present invention with the second feed roll removed.
  • the laminating apparatus 10 illustrated in Fig. 1 includes a first feed roller 11 having a frame 12 and a roll of first film 13 mounted thereon for rotation about a first roll axis 14, a second feed roller 15 having a frame 16 and a roll of second film 17 mounted thereon for rotation about a second roll axis 18, and a third feed roller 19 having a frame 20 and a roll of third film 21 mounted thereon for rotation about a third roll axis 22.
  • the feed rollers are all aligned with their axes parallel and are mounted on a concrete floor below an elevated platform 23 which is supported above the floor by a plurality of posts 24a to 24f.
  • the apparatus is intended for use in the production of a laminate comprising a film from the roll of first film and a film from the roll of second film or alternatively comprising a film from the roll of first film and a film from the roll of third film.
  • the first film feeds from its roll over a series of guide rollers 26, 27, 28 and 29 which are mounted on the frame assembly in the direction shown as "A", to a bonding station 30 which will be described in more detail later.
  • film from the roll of second film feeds around a series of guide rollers 36, 37 and 38 to a coating station 40 in which adhesive is applied to one face of the second film as will be described in more detail later.
  • the adhesive for a first type of laminate can be a water based adhesive or any other suitable adhesive.
  • Laminate leaving the bonding station passes over guide rollers 41, 42, 43 and 44 on the way to a collecting station 70 which will be described in more detail later.
  • the first film passes around guide rollers 51, 52 and 53 before entering the previously mentioned coating station 40 and after leaving the coating station passes around a series of guide rollers 55, 56, 57, 58 and 59 before reaching the series of rollers 26, 27, 28, 41, 42, 43 and 44 mentioned earlier. From roller 44 the first film is directed to a second bonding station 60 from where it travels around a series of guide rollers 66, 67 and 68 before entering the collecting station 46.
  • the apparatus includes a drying system shown diagrammatically at 80 which is arranged to dry the water based adhesive after application to the first film to form a contact adhesive prior to the film reaching the bonding station 60.
  • the drying system 80 includes a fan and heater assembly shown diagrammatically at 81 having an air inlet 82 and an air outlet 83.
  • a duct also shown diagrammatically at 84 is connected to the air outlet and extends across the full width of the first film over a substantial part of the web run.
  • the duct has a plurality of outlets shown as arrows 85 directed onto the adhesive on the film and the outlets are arranged such that the air is directed counter to the direction of movement of the first film.
  • the apparatus as shown in Fig. 3 is arranged for the production of a laminate comprising a first film of a plastics material from the roll 13 and an aluminium foil from the roll 21 which are bonded together by a water based adhesive of the polyvinyl acetate or polyvinyl alcohol type suitably about 8 gms per square metre of adhesive is applied to the film which dries to about 4 gms per square metre.
  • the temperature of the drying air should be approximately 85 degrees Celsius at a web speed of 75 metres per minute and an air flow rate of about 1000 litres per second.
  • the coating station 40 is mounted on a stand 110 and includes a trough 111 for holding adhesive 112, a take up roller 113 which is partly immersed along its length in the trough and adapted to pick up adhesive onto its surface as it rotates, a trimming roller 114 which is in rolling contact with the take up roller and adapted to receive therefrom a film of adhesive, an application roller 116 in rolling contact with the trimming roller and adapted to receive therefrom a form of adhesive at a predetermined desirable thickness, and a driving roller in rolling contact with the application roller.
  • the rollers are all aligned with the feed rollers and have their axes parallel thereto. As can be seen in Fig.
  • the second film passes between the application roller and the drive roller and in so doing, the application roller applies adhesive to one face thereof prior to the film entering the bonding station 30.
  • the first film passes between the application roller and the drive roller and in so doing the application roller applies adhesive to one face thereof prior to the film entering the bonding station 60.
  • the pick up roller 113 is almost twice the diameter of the trimming roller, the application roller and the drive roller which are all of similar diameter.
  • the adhesive holds better to the pick up roller of greater diameter and results in a thinner film being applied to the film than otherwise possible.
  • bonding stations 30 and 60 are similar in many respects although the positioning of the various guide rollers differs in order to guide the relevant film from the relevant source to the relevant destination.
  • Bonding station 30 has a set of nip rollers 131 and 132 which force the two films together and bonding station 60 has similar rollers 161 and 162.
  • nip roller 161 is heated to approximately 80 degrees Celsius in order to sufficiently melt the resulting contact adhesive as the first film wraps that roller to form the desired bond.
  • Nip roller 162 may also be heated if desired.
  • nip roller 132 maybe heated for some applications if desired.
  • the laminate After leaving the bonding station 30 or 60 as the case may be, the laminate is formed into a roll about a roll former at collecting station 70.
  • the collecting station includes two adjacent support rollers 71 and 72 on which the roll former is driven.
  • the roll is formed by placing the former in the recess between the two rolls and applying downward pressure by a pneumatic ram 73 in order that rotary drive is transferred from the drive roller 72 to the former. It will be appreciated that as the roll grows in diameter, the peripheral speed remains constant.
  • the application station and the two bonding stations are driven by an electric motor 130 via chains and sprockets (not shown) .
  • Pneumatically operated brakes are provided on the shafts of the three feed rollers for maintaining sufficient tension on the respective films.
  • a pneumatic brake (not shown) mounted adjacent the end of the roller is provided on the collecting roller 71 and can be adjusted to ensure that sufficient tension is maintained on the laminate as desired.
  • the collecting roller 71 is driven at a peripheral speed which is approximately 5% faster than the speed of the laminate leaving bonding station 30 or 60 to ensure that the laminate is tensioned to an extent whereby a tight roll is created.
  • a reinforcing mesh such as that known as CRENET or another layer may be included in the laminate by adding a further film layer in an appropriate place.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un stratifié convenant au voligeage dans le bâtiment. Ce stratifié comprend une couche de plastiques et une couche de feuille de métal liée aux plastiques au moyen d'une couche de colle à base aqueuse sensiblement exempte d'humidité à l'état libre. Après séchage, la colle forme une couche autocollante exempte d'humidité à l'état libre préalablement au collage des couches. Le matériau plastique peut être fabriqué à partir d'une formulation de polyéthylène basse densité linéaire, éventuellement métallocéniquement catalysé, de polyéthylène basse densité, de polyéthylène haute densité, et d'un ignifuge. Ce stratifié pour sa production implique un appareil réunissant un organe d'introduction (11), un applicateur de colle (40), un séchoir à colle (80), un organe forçant les films à s'appliquer les uns sur les autres (60), une calandreuse (70) et des tensionneurs. Selon un autre mode de réalisation, l'invention concerne un appareil permettant la formation d'un stratifié à trois couches.
PCT/AU2001/001268 2000-10-10 2001-10-09 Films plastiques, formulations stratifiés et procédé et appareil de fabrication correspondants WO2002030663A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001295253A AU2001295253A1 (en) 2000-10-10 2001-10-09 Plastics films, formulations, laminates and methods and apparatus for their manufacture

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPR0659 2000-10-10
AUPR0659A AUPR065900A0 (en) 2000-10-10 2000-10-10 Laminates and methods and apparatus for their manufacture
AUPR0705 2000-10-12
AUPR0705A AUPR070500A0 (en) 2000-10-12 2000-10-12 Plastics film and formulation therefor

Publications (1)

Publication Number Publication Date
WO2002030663A1 true WO2002030663A1 (fr) 2002-04-18

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056452A2 (fr) * 1981-01-19 1982-07-28 National Starch and Chemical Corporation Laminés flexibles et adhésifs pour leur production
US4498946A (en) * 1982-09-24 1985-02-12 Polytype Ag Apparatus and method for manufacturing a sandwich web
EP0359440A2 (fr) * 1988-09-01 1990-03-21 Mitsui Petrochemical Industries, Ltd. Composition de polyéthylène et pellicule fabriqué à partir de celle-ci
US5192388A (en) * 1990-04-17 1993-03-09 Maschinenfabrik Polytype A.G. Process and device for producing a composite web
EP0546792A1 (fr) * 1991-12-11 1993-06-16 Avner Geller Aggloméré laminé utilisable comme matériel d'emballage et sa fabrication
EP0735090A1 (fr) * 1995-03-29 1996-10-02 Mitsui Petrochemical Industries, Ltd. Composition de résine de polyéthylène pour sac d'emballage de charges lourdes et film produit à partir de cette composition
JPH1088089A (ja) * 1996-07-22 1998-04-07 Dainippon Ink & Chem Inc 水性接着剤組成物及びラミネート方法
JPH10168244A (ja) * 1996-12-11 1998-06-23 Sekisui Chem Co Ltd バッグインボックス用シーラントフィルム
WO1998039396A1 (fr) * 1997-03-07 1998-09-11 H.B. Fuller Licensing & Financing, Inc. Adhesifs ameliores a base d'eau, a deux constituants, utilises dans une stratification de contact
CA2240969A1 (fr) * 1998-06-04 1999-12-04 H.B. Fuller Licensing & Financing, Inc. Film stratifie sec utilisant des adhesifs acryliques d'emulsion a liant ameliore
WO2000040407A1 (fr) * 1998-12-31 2000-07-13 Mobil Oil Corporation Film hermetiquement scelle a ouverture facile

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056452A2 (fr) * 1981-01-19 1982-07-28 National Starch and Chemical Corporation Laminés flexibles et adhésifs pour leur production
US4498946A (en) * 1982-09-24 1985-02-12 Polytype Ag Apparatus and method for manufacturing a sandwich web
EP0359440A2 (fr) * 1988-09-01 1990-03-21 Mitsui Petrochemical Industries, Ltd. Composition de polyéthylène et pellicule fabriqué à partir de celle-ci
US5192388A (en) * 1990-04-17 1993-03-09 Maschinenfabrik Polytype A.G. Process and device for producing a composite web
EP0546792A1 (fr) * 1991-12-11 1993-06-16 Avner Geller Aggloméré laminé utilisable comme matériel d'emballage et sa fabrication
EP0735090A1 (fr) * 1995-03-29 1996-10-02 Mitsui Petrochemical Industries, Ltd. Composition de résine de polyéthylène pour sac d'emballage de charges lourdes et film produit à partir de cette composition
JPH1088089A (ja) * 1996-07-22 1998-04-07 Dainippon Ink & Chem Inc 水性接着剤組成物及びラミネート方法
JPH10168244A (ja) * 1996-12-11 1998-06-23 Sekisui Chem Co Ltd バッグインボックス用シーラントフィルム
WO1998039396A1 (fr) * 1997-03-07 1998-09-11 H.B. Fuller Licensing & Financing, Inc. Adhesifs ameliores a base d'eau, a deux constituants, utilises dans une stratification de contact
CA2240969A1 (fr) * 1998-06-04 1999-12-04 H.B. Fuller Licensing & Financing, Inc. Film stratifie sec utilisant des adhesifs acryliques d'emulsion a liant ameliore
WO2000040407A1 (fr) * 1998-12-31 2000-07-13 Mobil Oil Corporation Film hermetiquement scelle a ouverture facile

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class A81, AN 1998-267357/24 *
DATABASE WPI Derwent World Patents Index; Class A92, AN 1998-408802/35 *

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