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WO1992016371A1 - Voile pre-plisse et rendu elastique - Google Patents

Voile pre-plisse et rendu elastique Download PDF

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Publication number
WO1992016371A1
WO1992016371A1 PCT/US1991/006685 US9106685W WO9216371A1 WO 1992016371 A1 WO1992016371 A1 WO 1992016371A1 US 9106685 W US9106685 W US 9106685W WO 9216371 A1 WO9216371 A1 WO 9216371A1
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WO
WIPO (PCT)
Prior art keywords
web
elastic
elasticized
nonwoven
filaments
Prior art date
Application number
PCT/US1991/006685
Other languages
English (en)
Inventor
Reinhardt N. Sabee
Original Assignee
Sabee Reinhardt N
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
Application filed by Sabee Reinhardt N filed Critical Sabee Reinhardt N
Publication of WO1992016371A1 publication Critical patent/WO1992016371A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/04—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a layer being specifically extensible by reason of its structure or arrangement, e.g. by reason of the chemical nature of the fibres or filaments
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • 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
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2016/00—Articles with corrugations or pleats
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented

Definitions

  • This invention relates to elasticized fabric and processes and apparatus for preparing elasticized fabrics, and particularly to such a fabric which is elongatable to a very great degree wherein the web integrity does not suffer from web and fiber separa ⁇ tion upon the application of a stretching force.
  • Another method is the use of a blanket of non-oxidizing gas to reduce the polymer oxidation, which is a major cause of the problems encountered in processing TPE polymers at the high temperatures asso ⁇ ciated in the fiber blowing phase of the melt-blowing process.
  • This blanketing of the resin in the fiber- forming stage limits the oxidative degradation of the extrudable TPE resin.
  • Morman, U.S. Patent No. 4,692,371 describes a method for making an elastomer ⁇ ic material which may be heated to temperatures high enough to normally degrade the material, about 600 ⁇ F (315 ⁇ C) , to form fibers by extrusion through a plural- ity of extrusion orifices into a gas stream.
  • the gas stream is formed of an inert or at least a non-oxidizing gas such as nitrogen, which attenuates the extrudate from the orifices to produce elastomeric fibers using the melt blown process as described above and more completely described in Butin, U.S. Patent No. 3,849,241, which is incorporat ⁇ ed herein in its entirety by reference.
  • a non-oxidizing gas such as nitrogen
  • a different process for producing these fi ⁇ bers consists of simultaneously spinning a multiple number of con ⁇ tinuous filaments of synthetic polymer such as poly ⁇ propylene through multiple spinning nozzles or spin ⁇ nerets, preferably extending in one or more rows.
  • the polymer is melted in an extruder and the melt deliv- ered by pumps to the spinning equipment which include spinning nozzles for the extrusion of molten polymer to form the desired filaments.
  • the filaments are then directed through a quench chamber into the nip of a pair of temperature controlled draw rolls which feed the downstream processing equipment.
  • the melt spun process is explained more fully in Dorschner, U.S. Patent No. 3,692,618, and Sabee, U.S.
  • the prior art teaches the use of the melt blown random laid fibrous process and the melt spun random laid continuous fila- ment process for the production of elasticized fab ⁇ rics. Since both processes are random laid, and since complete randomness is rarely if ever accomplished in random laid webs, both processes have the inherent characteristic of forming non-uniform webs, particu- larly in the light weight fabrics, with respect to uniformity, opacity, porosity, basis weight, and ma ⁇ chine direction-cross direction tensile strengths throughout the web.
  • web weights have to be increased to give the non-uniform fabric more of a semblance of uniformity in opacity, porosity, basis weight, tensile strengths, and appearance, and to meet minimum requirements of the final product specifica ⁇ tions, thereby adding to the product cost, weight, and stiffness.
  • Elastomeric webs prepared from melt blown elastomeric fibers and filaments have a random laydown pattern, and as a result form a layer of entangled and intertwined fibers lying in nearly infinite different directions.
  • a degree of elasticity is one important consideration in forming composite fabrics such as those of the present inven ⁇ tion, particularly when such composites are to be uti ⁇ lized in garments which are designed to conform to the body of the wearer. For example, in the manufacture of disposable diapers a degree of elasticity of the fabric will assist in conforming it to the body con ⁇ tours of the wearer. Further, it is often desired that the composite material should have a soft hand and feel. It is therefore desirable that the bonding of the elastic web to the other web or webs of the laminate be done without the provision of an adhesive which would tend to make the resultant composite stiff.
  • the elas- tomeric or elastic substrates be of a sufficient strength and increased basis weight to overcome the resistance of various types of webs to form the gath ⁇ ers. This of course limits the choice of gatherable webs to only those having great flexibility with lit- tie or no stiffness and being of low basis weight. Otherwise the basis weight of the elastomeric or elas ⁇ tic substrate must be increased so that the contract ⁇ ing force is great enough to form gathers in the cho ⁇ sen material. This increased basis weight, however, increases the cost of the elasticized fabric, and the resulting increased stiffness of the fabric has a del ⁇ eterious affect on the hand and drape of the fabric.
  • "stretch-bonded laminates" may be formed by joining at least two nonwoven webs, one of which is elastic and at least one of which is nonelas- tic.
  • the elastic nonwoven web is joined to the non- elastic web while the elastic nonwoven web is in an elongated condition due to an applied tensioning force.
  • the elastic nonwoven web will attempt to recover to its unstretched condition and thereby start to gather the nonelastic nonwoven web.
  • a stretch bonded web having an ungathered web joined to a stretched melt blown elas ⁇ tic fibrous web must have a stretched elastic fibrous web having a contracting force strong enough to form gathers in said ungathered web by overcoming the re ⁇ sistance of the ungathered web to having gathers formed in itself.
  • the fibrous elastic web consists of melt blown random laid fibers that have been subjected to thermal and oxidative degradation and have lay down problems inherent in the melt blown process such as streaks, and thick and thin areas which are compensat ⁇ ed for by increasing the basis weight of the fibrous elastic web to ensure the proper gathering of the gatherable web.
  • nonelas ⁇ tic nonwoven webs that would be useful as the gatherable web in an elastic fabric but are either too difficult to gather by the contracting force of the fibrous elastic web or the elastic web has to have an increased basis weight to overcome the resistance to gathering by the nonelastic web, which would make the cost of the elastic fabric exorbitantly high.
  • nonelastic webs having stiffness and toughness so great that it is not practical to form a melt blown elastic fibrous web with strong enough con ⁇ tractive forces to gather them.
  • This invention relates to improvements to the inventions set forth above and to solutions to the problems raised or not solved thereby. summary of the Invention
  • the elastomeric or elastic substrates be of a sufficient strength and increased basis weight to overcome the resistance of various types of webs to form gathers.
  • This of course limits the choice of gatherable webs to only those having great flexibility with little or no stiffness and being of low basis weight, or alternately, increasing the basis weight of the elastomeric or elastic substrate until the con ⁇ tracting force is great enough to form gathers in the chosen material, thereby increasing the cost of the elasticized fabric with the increased stiffness having a deleterious affect on the hand and drape of the fab- ric.
  • An advantage of the instant invention is the ability to form extremely light weight elasti ⁇ cized fabrics, laminates, or composites by combining low basis weight, highly elastic stabilized continuous filament webs having high extensibilities, low modulus and low tensile sets, to a low basis weight pregath ⁇ ered web which is at least partially self gathering. Because of the low modulus and low tensile set of the continuous elastomeric filaments in comparison to the thermoplastic urethanes, it is possible to design gathered elastic closures that are gentler and less constrictive to the user. At the low end of this range it is important that the elastic filaments are strong enough to provide the retentive force needed to maintain a secure fit of the garment to the wearer. And the high end of the elongation range should not be so strong as to cause strangulation of limbs or welt ⁇ ing and/or discomfort to the user.
  • melt spun contin ⁇ uous elastomeric filaments for several reasons.
  • the present invention permits the intermingling of elastomeric and non-elastic con ⁇ tinuous filaments of various areas, sizes, and shapes, and the placing of these continuous filaments in pre ⁇ determined locations and concentrations and the prede ⁇ termined laydown direction of the continuous fila ⁇ ments.
  • individual continuous elastomeric fila ⁇ ments can be stretched intermittently in total or in selected portions to provide discrete areas with more elasticity than surrounding adjacent areas, and other discrete areas can be provided with more elastomeric filaments in a predetermined intermittent pattern than adjacent areas.
  • the heat set crimping or preset crimping of pregatherable webs with temperature controlled crimp ⁇ ing rolls puts a permanent set in difficult to gather webs, enabling the use of lighter weight lower cost elastomeric substrates. As indicated above, this per ⁇ manently set pattern of gathers in the pregathered web has an inherent contracting force of its own which aids in the relaxation and contraction of elasticized fabrics or composites.
  • a creping or gathering process is performed on an elongatable but relatively nonelastic web.
  • This gathering process may be performed by any of a number of creping apparatus commercially available.
  • the nonelastic web is gathered, it is joined to a nonwoven elastic web to form an elasticized gathered nonwoven fabric.
  • This fabric is then subjected to tension and thus stretched and elongated so as to remove most or substantially all of the gathers from the pregathered web.
  • tension is removed from the elasticized nonwoven fab ⁇ ric so as to relax the fabric, and thereby reform some or all of the gathers of the nonelastic web.
  • these pregathered substrates may be joined to untensioned, lightly tensioned, or substantially tensioned melt spun continuous elastomeric filamentary substrates with a resultant increases in their contracting and relaxing capabilities and a decrease in cost by the utilization of a more efficient use of elastomeric material which in turn tremendous improves the hand, drape, appearance, and uniformity of porosity opacity and basis weight.
  • the elasticized fabrics of the present in- ventions include one or more plies of various fibrous webs or films bonded to non-random laid continuous elastomeric filaments or to combinations of elastomer ⁇ ic filaments and elongatable but relatively non-elas ⁇ tic continuous filaments which are stabilized with a deposition of melt blown or sprayed polymeric fibers.
  • Fig. 1 is a side schematic view of an appa- ratus constructed to practice one embodiment of the invention, by use of a Mi ⁇ rex-type creper.
  • Fig. 2 is a side schematic view of an appa ⁇ ratus similar to that shown in Fig. 1, including appa ⁇ ratus for applying another web to the fabric.
  • Fig. 3 is a side schematic view of an appa ⁇ ratus similar to that shown in Fig. 2, including appa ⁇ ratus for applying additional materials to the fabric.
  • Fig. 4 is a side schematic view of an appa ⁇ ratus constructed to practice a different embodiment of the invention by use of meshing creping rolls of different sizes and gear shapes.
  • Fig. 5 is a side schematic view of an appa ⁇ ratus constructed to practice yet another embodiment of the invention by use of a set of corrugating end- less chains in addition to microcreping rolls. Description of the Preferred Embodiments
  • melt blowing and “melt spraying” are herein used interchangeably and defined as the process where thermoplastic polymers are fed through one or more rows of spinnerets or spray nozzles form ⁇ ing molten streams which are then attenuated and fiberized with heated, pressurized air or gas streams.
  • the heated, pressurized air or gas streams elongate or attenuate the molten extrudate, thereby forming fibers and or continuous filaments varying diameters from 0.2 microns or less to diameters of more than 1000 mi ⁇ crons, and having lengths ranging from less than about 1/8" to continuous filaments having extreme lengths.
  • the air or gas temperatures may range from over 900°F to less than 225 ⁇ F at the spinneret or spray nozzles depending upon the melt flow rate or the required deg ⁇ radation rate of the thermoplastic polymer or the melt temperature of the hot melt adhesive.
  • melt spun as used herein is de- fined as the process wherein continuous filaments are prepared by simultaneously spinning a multiple number of continuous filaments of a synthetic polymer such as polypropylene through a multiple number of spinning nozzles or spinnerets, preferably extending in one or more rows.
  • the filaments are drawn pneumatically or mechanically from the spinneret and enter a travel zone which may be confined inside a covered chamber or chimney so as to introduce cooled, ambient, or heated air or other gas at a controlled temperature as re- quired for draw processing or at least partially so ⁇ lidifying the filaments.
  • draw are herein used interchangeably and are defined as the process which takes place when an unoriented crystal ⁇ line polymer is subjected to an external stress. Due to the application of that stress, the polymer under ⁇ goes a rearrangement of the crystalline material, wherein the polymer chains align in the direction of the applied stress, at which time the physical proper ⁇ ties of the sample change markedly.
  • filament longitudinal fila ⁇ ment
  • continuous filament continuous filament
  • melt spun filament melt spun continuous filaments which have not been intentionally broken or cut, formed from a number of orifices in a spinneret plate, and are not limited as to size or shape.
  • elastic and “elasticized” are herein used interchangeably and are used to describe articles which have been made stretchable and con- tractable with the use of elastomeric materials in their preparation. These articles may be prepared wholly from elastomeric materials or may be comprised of elastomeric materials combined with relatively non- elastic materials.
  • recovery is used in reference to the ability of an elongated material to return to its original length before elongation, after relaxation and contraction.
  • Highly elastomeric materials ap ⁇ proach 100% recovery after elongation and relaxation and have stretchabilities ranging from about 10% to over 900% of their relaxed length, whereas many non- elastic but elongatable materials approach 0% recovery after elongation and molecular orientation after re ⁇ laxation and contraction.
  • recovery refers to the contraction of a stretched or elongated material upon termination of the elongating force subsequent to the stretching or elongating of a material by the elongating force.
  • elongatable but relatively non- elastic and “elongatable but nonelastic” are herein used interchangeably and concern materials, composites or webs which after elongation remain extended, to varying degrees, upon release of the elongating force.
  • a material, web or filament having a relaxed length of 2 inches may be elongated to a length of 2.2 inches, for an elongation of at least 10% of its original relaxed length. If, upon release of the elongating force, followed by relaxation and contraction, the length of the material is 2.1 inches, the material is elongatable but nonelastic.
  • This re ⁇ laxed contracted length of 2.1 inches represents a recovery of 50% of its elongation for a permanent in- crease of its length of 0.1 inches or a length in- crease of 5% of its original relaxed length.
  • An elon ⁇ gatable but relatively nonelastic filament or fiber is herein defined as a filament or fiber formed from a material having a recovery varying from 0% to about 50%, or permanent elongations varying from about 50% to 100% of their elongated lengths.
  • heat set crimp is herein defined as permanent gath ⁇ ers, crimps, crepes, wrinkles, puckers, corrugations, or any other suitable gathering type pattern, which are permanent creases or folds formed in webs or substrates by crimping or corrugating rolls.
  • the per ⁇ manent crimping is accomplished by the molecular ori ⁇ entation which takes place by the crimp drawing of webs or substrates during crimping at ambient tempera ⁇ tures or the softening and cooling of the webs or substrates as they pass through temperature controlled crimp rolls.
  • the modulus of Kraton polymer films and filaments can be as low as one tenth the modulus of competing urethane materials, making them ideal for use in disposable fabrics and other products.
  • Their high elasticity or extensibili- ty combined with the unique characteristic of having a low modulus and a very low tensile set allow the design of gathered elastic closures that are gentler and less constrictive with less discomfort for the user of disposable diapers or adult incontinence prod- ucts.
  • pregathering the gatherable substrate or material substantially reduces the contracting and relaxing force required to form the gathers upon the release of the tensioning force on the elasticized fabric.
  • pregathering assists the con ⁇ tracting force of the elasticized fabric.
  • the pre- gatherable patterns may vary and take on various forms such as corrugated, crimped, creped, wrinkled, puck- ered or any other suitable gathering type pattern de ⁇ pending upon the materials comprising the gatherable substrate.
  • the method and type of pregathering will vary with the physical properties of the particular substrate or gatherable material.
  • a low basis weight, very pli ⁇ able substrate may only require a passage through a Micrex-type creper 10 prior to joining an elasticized substrate, as shown in Figs. 1, 2 and 3.
  • Machines such as these are produced and sold by the Micrex Corp. of Walpole, Massachusetts.
  • the creping is formed on a main roll 12 where the web 14 to be treated is driven by the surface of the ro ⁇ tating main roll pressing against a stationary primary surface 16.
  • the web 14 is doctored off the roll 12 between a rigid retarder 18 and a flexible retarder 20 which furnish the resistance required to form a creped web 22.
  • the uniformi ⁇ ty, degree of compaction, and crepe-cross section can be varied to obtain the desired results and character- istics of the material being creped or pregathered.
  • the gatherable substrate basis weight in ⁇ creases or the pliability decreases or both, it may become necessary to pass the substrate through a pair of meshing tooth rollers 24 and 26, as shown in Figs. 4 and 5, and as taught in Sukenik, U.S. Patent No. 4,531,996, Sabee, U.S. Patent No. 4,153,664 and Sabee, U.S. Patent No. 4,223,063, wherein permanent crimps are formed to pregather the web.
  • the disclosures of these patents are incorporated herein by reference.
  • the tooth form can be of any shape from sharp pointed teeth 28 which impart crimps to the web, to a rounded sinusoidal form 30.
  • This latter form depending upon the closeness of the fit between the teeth, can be used to cause pregathering without forming permanent crimps to the web and is appropriate for cases wherein the elasticized fabrics require a very high elongation of about 300% or more.
  • the teeth may be heated to facilitate the formation of permanently set gathers. Pregathering without forming permanent or preset crimps may also accomplished by passing webs through non-crimping corrugating chains 32, carrying corrugating rolls 34 such as shown in Fig. 5 and as disclosed in Steinmann et al., U.S. Patent No.
  • the permanently crimped pregathered sub ⁇ strate now has elastic properties, in that it requires a stretching force to elongate it and upon relaxing of the stretching force the crimped pregathered substrate contracts. This means that a reduced contracting force is required of the elasticized web applied to the pregathered substrate, to relax and contract the resulting elasticized fabric, as compared to an un ⁇ gathered substrate wherein gathers are formed solely by the contracting force of an applied fibrous web of stretched melt blown elastomers.
  • a web 14 being formed of melt blown fibers 36 from a melt blown fiber die 38. While this web 14 is shown being formed on a drum 40, web 14 could just as easily be prefabricated, and be fed from a roll. If prefabricated, the web 14 may be any suit- able prefabricated web including but not limited to dry or wet laid webs, spun bonded webs, melt blown webs, air laid webs, hydroentangled webs, film, spun laced webs, fibrillated films, needle punched webs, high loft fabrics, and stabilized, non-random laid, continuous filament webs as described in Sabee '064. From there, as indicated above, web 14 is creped in a Micrex-type creper and, resulting in the creped web 22.
  • an array 42 of melt spun continuous elastomeric filaments is formed from an elastomeric melt spun extrusion die 44 and passes into the nip of a pair of temperature controlled feed rolls 46. From there, the array of filaments 42 is stabi ⁇ lized by the application of melt blown fibers 48 from a melt blown fiber die 50. Thereafter, the array of continuous filaments 42 is joined to the creped web 22, preferably by means of the application of melt blown adhesive fibers 52 from a melt blown adhesive die 54. As shown in Figs. 1 through 3, the melt blown adhesive fibers 52 may be applied to both the array of continuous filaments 42 and the creped web 22 simulta ⁇ neously. Alternatively, adhesive fibers 52 may be applied to each separately.
  • the array of continuous filaments 42 is joined to the creped web 22 by passage through the nip of two join ⁇ ing rolls 54, to produce an elasticized fabric 56.
  • This fabric is then subjected to tension such as by draw rolls 58 so as to remove substantially all of the gathers or crepes from the creped web 22, while stretching the array of continuous filaments 42.
  • draw rolls 58 the fabric 56 is relaxed, and the tension thereon released so as to reform at least some of the gathers of the original creped web 22.
  • the resulting wavy but still elastic fabric 60 is accumulated on a roll 62 by a two drum winder 64.
  • elasti ⁇ cized fabric 56 is arrived at in identically the same way as shown in Fig. 1. Thereafter, a substantially non-elongatable web 66, whether prefabricated and un ⁇ wound from a drum 68, or formed of melt blown fibers on drum 68, is applied to the continuous filaments side of the fabric 56 as it is drawn and elongated so that the gathers are removed from the pregathered web 22.
  • the web 66 may be any suitable prefabricated web including but not limited to dry or wet laid webs, spun bonded webs, melt blown webs, air laid webs, hydroentangled webs, film, spun laced webs, fibrillated films, needle punched webs, high loft fab ⁇ rics, and stabilized, non-random laid, continuous fil ⁇ ament webs as described in Sabee '064.
  • Web 66 may be applied to the array 42 of continuous filaments by any suitable means such as the application of melt blown adhesive fibers 70 from a melt blown adhesive die 72. Thereafter, the resulting three-ply fabric 74 may now be pin bonded by pin bonding apparatus 76.
  • pin bonding apparatus 76 may include an ultrasonic horn 78 and an embossed roll 80. As in Fig. 1, the resulting fabric 82, now pin bonded, is relaxed so as to reform at least some of the gathers, and accumulated on a roll 62 by a two drum winder 64.
  • Fig. 3 for yet another slightly modified embodiment, there is shown an addi- tional melt blown fiber die 84 melt blowing fibers onto the side of the array of continuous filaments opposite that on which die 50 is melt blowing fibers 58.
  • the purpose of this additional deposition of melt blown fibers is to further stabilize the array of con- tinuous filaments 42. After this additional deposi ⁇ tion of melt blown fibers, the rest of the process is the same as described in connection with Fig. 2.
  • Figs. 4 and 5 show basically the same pro ⁇ cess, the only difference being the method and appara- tus for gathering the web 14. That is, referring first to Fig. 4, as indicated above, a web 14 being formed of melt blown fibers 36 from a melt blown fiber die 38. While this web 14 is shown being formed on a drum 40, web 14 could just as easily be prefabricated and fed from a roll. From there, as indicated above, web 14 is gathered by means of mesh ⁇ ing tooth rollers 24 and 26. In the particular em ⁇ bodiment shown in Fig. 4, the web 14 is first passed through meshing toothed rollers 24 which have sharp pointed teeth 28 to impart permanent crimps to the web.
  • the crimped web 22 is passed through the second set of meshing toothed rollers 26 which have teeth 30 with a rounded sinusoidal form, and which do not actually contact each other.
  • This latter structure causes pregathering without forming further permanent crimps to the already-crimped web 22 and results in a doubly-gathered web 23, for cases wherein the final elasticized fabrics are intended to permit a very high elongation of about 300% or more.
  • an array 42 of melt spun continuous elastomeric filaments is simultaneously formed from an elastomeric melt spun extrusion die 44 and passes into the nip of a pair of temperature controlled feed rolls 46. From there, the array of filaments 42 is joined to the dou ⁇ bly-gathered web 23, preferably by means of the appli ⁇ cation of melt blown adhesive fibers 52 from a melt blown adhesive die 54. Once adhesive fibers 52 are applied, the array of continuous filaments 42 is joined to the doubly-gathered web 23 by passage be ⁇ tween sinusoidal meshing toothed rollers 26 and an application belt 88, to produce a highly elasticized fabric 90.
  • This fabric 90 is then subjected to ten ⁇ sion such as by sets of draw rolls 92 so as to remove substantially all of the gathers or crepes from the doubly-gathered web 23, while stretching the array of continuous filaments 42.
  • Some of the draw rolls 92a may be embossed so as to pin bond the doubly-gathered web 23 and the array of continuous filaments 42 to- gether.
  • the fabric 90 is relaxed, and the tension thereon released so as to reform at least some of the gathers of the original creped web 22.
  • the resulting wavy but still elastic fabric 94 is accumulated on a roll 62 by a two drum winder 64.
  • the structure shown in Fig. 5 is basically the same as that shown in Fig.
  • the element 44 repre ⁇ sents a machine as disclosed in Sabee '064 which pre ⁇ pares a cross-laid laminate 42 of nonrandom-laid con ⁇ tinuous filaments, wherein at least one curtain of continuous filaments oriented in a first direction is joined to another curtain of continuous filaments ori ⁇ ented in a second direction transverse to the first direction.
  • element 44 represents a roll of prefabricated laminate 42.
  • the term "melt blown fibers" is herein used to refer to fiber lengths varying from short fibers to substantially continuous length filaments. Melt blown fibers may be adhesive fibers from materials including pressure sensitive, elastomeric, pressure sensitive elastomeric, hot melt or any fiberizable thermoplastic polymer, co-polymer or blend of polymers.
  • the continuous filaments 42 are prepared by simultaneously spinning a multiple number of continu ⁇ ous filaments of a synthetic polymer such as a poly- propylene or an elastomeric polymer through a multiple number of spinning nozzles or spinnerets, preferably extending in one or more rows. Upon exiting the spin ⁇ nerets the filaments enter a controlled temperature chamber and are drawn away from the spinneret orifice at a greater rate than the rate of extrusion. Thus is effected a substantial draw down of the filaments in the molten state prior to solidification thereof.
  • a synthetic polymer such as a poly- propylene or an elastomeric polymer
  • the solidified filaments having a low degree of molecular orientation are then subjected to a mechanical draw down with draw rolls under closely controlled tempera ⁇ ture and velocity conditions thereby imparting a much higher degree of molecular orientation to the continu ⁇ ous filaments.
  • the melt blowing of adhesive fibers is per- formed by the same technique as in an article by Van A. Wente entitled "Superfine Thermoplastic Fibers" appearing in Industrial and Engineering Chemistry, Vol. 48, No. 8, pp. 1342 to 1346, and have diameters ranging from less than 0.5 microns to more than about 250 microns.
  • These adhesive fibers are made by ex ⁇ truding a molten thermoplastic adhesive material through a plurality of fine die capillaries as a mol ⁇ ten extrudate of filaments into a high velocity gas stream which attenuates the filaments of molten adhe- sive material to reduce their diameter to the above stated range in the formation of microfibers or fila ⁇ ments.
  • Any fiberizable hot melt adhesive material is suitable in the formation of adhesive fibers to be used in the intermingling and the joining of strati- fied fibrous fabrics.
  • Elastomeric adhesives, pressure sensitive adhesives, pressure sensitive hot melts, viscoelastic hot melts, self-adhering elastic materi ⁇ als and conventional hot melt adhesives are some of the adhesives suitable for forming adhesive fibers. It is to be understood, however, that the present in ⁇ vention is not to be limited to these specific adhe ⁇ sives.
  • melt blown adhesive fibers do not stiffen the fibrous stratified fabrics as do the roller applied or coated adhesives. These latter adhesives often fill crevices and interstices.between the fibers of the fibrous lay ⁇ er or web and, after " solidification, bind groups of fibers together, which stiffens the fibrous layer and has a deleterious effect on the hand and drape.
  • the melt blown adhesive fibers on the other hand act as do the fibers of the layered fibrous web and not as sprays such as paint sprays, wherein small droplets of paint are emitted from a gun.
  • the melt blown fibers being flexible and of small diameter, are turbulently entangled with the fibrous web fibers and form bonds at their intersections with these fibers. These in- tersectional adhesive bonds behave similarly to fusion bonds with no noticeable stiffness of the composite fabric. They also provide the additional feature that the elastomeric adhesive fibers stretch or elongate under stress.
  • polyolefins such as polypropylene, polyethylene, polybutane, polymethyldentene, ethylenepropylene co- polymers
  • polyamides such as polyhexamethylene adipamide, poly-(oc-caproamide) , polyhexamethylene sebacamide
  • polyvinyls such as polystyrene
  • thermo- plastic elastomers such as polyurethanes, other ther ⁇ moplastic polymers such as polytrifluorochloroethylene and mixtures thereof; as well as mixtures of these thermoplastic polymers and co-polymers
  • ethylene vinyl acetate polymers synthetic polymers comprising 40% or more of polyurethane; polyetheresters; polyetherure- thane; polyamide elastomeric materials; and polyester elastomeric materials S-EB-S Kraton "G" Block co-poly ⁇ mers and Kraton GX 1657 Block co-polymers as furnished by Shell
  • any of the fiber forming thermoplastic polymers including fiber forming hot melt adhesives, pressure sensitive adhesives, and viscoelastic hot melt pressure sensi ⁇ tive adhesives can be used for stabilizing the web or bonding the stabilized web to one or more cellulose webs, wood pulp webs, melt blown fibrous mats, or for laminating and bonding two or more stabilized webs to from laminates.
  • the instant invention is not limited by the above polymers, for any thermoplastic polymer, co-polymer or mixture thereof capable of being melt blown into fibers or filaments is suitable.
  • Any of the thermoplastic elastomers which are capable of be ⁇ ing melt blown or melt spun are suitable for the manu ⁇ facture of stretchable fabrics.
  • the continuous filaments used herein to form a curtain of continuous filaments can be of many materials, natural or manmade, ranging from textile threads or yarns com ⁇ posed of cotton, rayon, hemp, etc. to thermoplastic polymers.
  • This invention is not limited to the use of any particular fiber, but can take advantage of many properties of different fibers.
  • a curtain of continu ⁇ ous filaments or threads using multifilament threads of rayon or nylon is readily stabilized by depositing a layer of molten melt blown fibers or filaments on this continuous filamentary web. Upon cooling, the molten melt blown filaments become tacky and self-bond to the continuous rayon or nylon threads.
  • thermoplastic melt spun continuous filaments are used which involve continuously extruding a thermoplastic polymer through a spinneret thereby forming a curtain of individual filaments.
  • thermoplastic polymers suitable for the continuous filaments are polyolefins such as polyethylene arid polypropylene; polyamides, polyesters such as polyethylene terepthalate; thermo ⁇ plastic elastomers such as polyurethanes; thermoplas ⁇ tic co-polymers; mixtures of thermoplastic polymers; co-polymers and mixtures of co-polymers; as well as the previously listed materials used herein for the melt blown fibers and filaments.
  • melt spinnable polymer any melt spinnable polymer is suitable, including all ad ⁇ hesive materials and spun bonded materials listed herein, and melt blown materials.
  • Other spinnable thermoplastic elastomers which are suitable for stretchable fabrics include but are not limited to polyester based polyurethane, and polyester type polyurethane polymeric fiber forming elastomers such as Texin 480A supplied by Mobay Chemical Company. It will be understood that this invention is not to be limited to the aforementioned materials.
  • thermoplastic polymers in addition to wood pulp or cellulose fibers and including staple fibers and equivalents as may be in ⁇ cluded within the spirit and scope of the invention as defined by the appended claims are to be included.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

On effectue un procédé de crêpage ou de plissage sur un voile étirable mais relativement non élastique. Ce procédé de plissage peut être effectué par n'importe quel appareil de crêpage disponible dans le commerce. Une fois que le voile non élastique (14) est crêpé, il est réuni à un voile élastique non-tissé, composé de filaments continus (42) placé de façon non aléatoire, afin de produire un non-tissé crêpé et élastique. Le tissu est alors soumis à une tension et ainsi étiré et allongé de sorte que la plupart ou la presque totalité des plis soit enlevée du voile pré-plissé. Enfin, on enlève la tension appliquée au non-tissé élastique, ce qui détend le tissu et permet à quelques-uns des plis ou à tous les plis du voile non élastique de se reformer.
PCT/US1991/006685 1991-03-20 1991-09-13 Voile pre-plisse et rendu elastique WO1992016371A1 (fr)

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EP0564784A1 (fr) * 1992-04-07 1993-10-13 Kimberly-Clark Corporation Tissu non-tissé fibreux anisotropique
DE4243012A1 (de) * 1992-12-18 1994-06-23 Corovin Gmbh Mehrschichtiges elastisches Flächengebilde sowie Verfahren zur Herstellung eines mehrschichtigen elastischen Flächengebildes
US5635290A (en) * 1994-07-18 1997-06-03 Kimberly-Clark Corporation Knit like nonwoven fabric composite
WO1997022318A1 (fr) * 1995-12-20 1997-06-26 Kimberly-Clark Worldwide, Inc. Article absorbant comportant des zones extensibles
DE19604953A1 (de) * 1996-02-10 1997-08-14 Corovin Gmbh Verfahren zur Herstellung eines mehrschichtigen elastischen Flächengebildes sowie mehrschichtiges elastisches Flächengebilde
US5910224A (en) * 1996-10-11 1999-06-08 Kimberly-Clark Worldwide, Inc. Method for forming an elastic necked-bonded material
EP1066961A1 (fr) * 1999-07-05 2001-01-10 Uni-Charm Corporation Procédé de fabrication d'une feuille composite étirable élastiquement
EP1066957A1 (fr) * 1999-07-05 2001-01-10 Uni-Charm Corporation Procédé de fabrication d'une feuille composite étirable élastiquement
SG85235A1 (en) * 2000-03-31 2001-12-19 Uni Charm Corp Process for making elastically stretchable composite sheet
SG85236A1 (en) * 2000-03-31 2001-12-19 Uni Charm Corp Composite sheet and process for making the same
US6623837B2 (en) 2000-12-27 2003-09-23 Kimberly-Clark Worldwide, Inc. Biaxially extendible material
US6785937B2 (en) 2002-04-24 2004-09-07 Kimberly-Clark Worldwide, Inc. Slit neck spunbond process and material
US6803009B2 (en) 2001-11-28 2004-10-12 Kimberly-Clark Worldwide, Inc. Process for making necked nonwoven webs and laminates having cross-directional uniformity
US6835264B2 (en) 2001-12-20 2004-12-28 Kimberly-Clark Worldwide, Inc. Method for producing creped nonwoven webs
US6900147B2 (en) 2001-11-28 2005-05-31 Kimberly-Clark Worldwide, Inc. Nonwoven webs having improved necking uniformity
US6902796B2 (en) 2001-12-28 2005-06-07 Kimberly-Clark Worldwide, Inc. Elastic strand bonded laminate
US6939334B2 (en) 2001-12-19 2005-09-06 Kimberly-Clark Worldwide, Inc. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US6967178B2 (en) 2002-07-02 2005-11-22 Kimberly-Clark Worldwide, Inc. Elastic strand laminate
US6969441B2 (en) 2000-05-15 2005-11-29 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing laminated articles
US6978486B2 (en) 2002-07-02 2005-12-27 Kimberly-Clark Worldwide, Inc. Garment including an elastomeric composite laminate
US7316842B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US7316840B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. Strand-reinforced composite material
US7320948B2 (en) 2002-12-20 2008-01-22 Kimberly-Clark Worldwide, Inc. Extensible laminate having improved stretch properties and method for making same
US7335273B2 (en) 2002-12-26 2008-02-26 Kimberly-Clark Worldwide, Inc. Method of making strand-reinforced elastomeric composites
US7361241B2 (en) * 2003-02-13 2008-04-22 Fleissner Gmbh Filamentary nonwoven bandage fabric
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
EP0938442B2 (fr) † 1996-11-13 2010-03-17 Kimberly-Clark Worldwide, Inc. Procede et appareil d'alignement pour couches elastifiees continuellement en mouvement, faites d'elements multiples
US7740786B2 (en) 2005-12-15 2010-06-22 Kimberly-Clark Worldwide, Inc. Process for making necked nonwoven webs having improved cross-directional uniformity

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US4657802A (en) * 1985-07-30 1987-04-14 Kimberly-Clark Corporation Composite nonwoven elastic web

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Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
EP0564784A1 (fr) * 1992-04-07 1993-10-13 Kimberly-Clark Corporation Tissu non-tissé fibreux anisotropique
DE4243012A1 (de) * 1992-12-18 1994-06-23 Corovin Gmbh Mehrschichtiges elastisches Flächengebilde sowie Verfahren zur Herstellung eines mehrschichtigen elastischen Flächengebildes
US5635290A (en) * 1994-07-18 1997-06-03 Kimberly-Clark Corporation Knit like nonwoven fabric composite
US5846232A (en) * 1995-12-20 1998-12-08 Kimberly-Clark Worldwide, Inc. Absorbent article containing extensible zones
WO1997022318A1 (fr) * 1995-12-20 1997-06-26 Kimberly-Clark Worldwide, Inc. Article absorbant comportant des zones extensibles
WO1997028962A1 (fr) * 1996-02-10 1997-08-14 Corovin Gmbh Procede de production d'une structure superficielle elastique multicouche et structure superficielle elastique multicouche ainsi obtenue
DE19604953A1 (de) * 1996-02-10 1997-08-14 Corovin Gmbh Verfahren zur Herstellung eines mehrschichtigen elastischen Flächengebildes sowie mehrschichtiges elastisches Flächengebilde
US5910224A (en) * 1996-10-11 1999-06-08 Kimberly-Clark Worldwide, Inc. Method for forming an elastic necked-bonded material
EP0938442B2 (fr) † 1996-11-13 2010-03-17 Kimberly-Clark Worldwide, Inc. Procede et appareil d'alignement pour couches elastifiees continuellement en mouvement, faites d'elements multiples
US6372067B1 (en) 1999-07-05 2002-04-16 Uni-Charm Corporation Process for making elastically stretchable composite sheet
EP1066961A1 (fr) * 1999-07-05 2001-01-10 Uni-Charm Corporation Procédé de fabrication d'une feuille composite étirable élastiquement
SG83803A1 (en) * 1999-07-05 2001-10-16 Uni Charm Corp Process for making elastically stretchable composite sheet
US6531014B1 (en) 1999-07-05 2003-03-11 Uni-Charm Corporation Process for making elastically stretchable composite sheet
SG83802A1 (en) * 1999-07-05 2001-10-16 Uni Charm Corp Process for making elastically stretchable composite sheet
EP1066957A1 (fr) * 1999-07-05 2001-01-10 Uni-Charm Corporation Procédé de fabrication d'une feuille composite étirable élastiquement
SG85235A1 (en) * 2000-03-31 2001-12-19 Uni Charm Corp Process for making elastically stretchable composite sheet
SG85236A1 (en) * 2000-03-31 2001-12-19 Uni Charm Corp Composite sheet and process for making the same
US6969441B2 (en) 2000-05-15 2005-11-29 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing laminated articles
US6623837B2 (en) 2000-12-27 2003-09-23 Kimberly-Clark Worldwide, Inc. Biaxially extendible material
US6900147B2 (en) 2001-11-28 2005-05-31 Kimberly-Clark Worldwide, Inc. Nonwoven webs having improved necking uniformity
US6803009B2 (en) 2001-11-28 2004-10-12 Kimberly-Clark Worldwide, Inc. Process for making necked nonwoven webs and laminates having cross-directional uniformity
US6939334B2 (en) 2001-12-19 2005-09-06 Kimberly-Clark Worldwide, Inc. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US6835264B2 (en) 2001-12-20 2004-12-28 Kimberly-Clark Worldwide, Inc. Method for producing creped nonwoven webs
US6902796B2 (en) 2001-12-28 2005-06-07 Kimberly-Clark Worldwide, Inc. Elastic strand bonded laminate
US6785937B2 (en) 2002-04-24 2004-09-07 Kimberly-Clark Worldwide, Inc. Slit neck spunbond process and material
US6978486B2 (en) 2002-07-02 2005-12-27 Kimberly-Clark Worldwide, Inc. Garment including an elastomeric composite laminate
US7015155B2 (en) 2002-07-02 2006-03-21 Kimberly-Clark Worldwide, Inc. Elastomeric adhesive
US7316842B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US7316840B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. Strand-reinforced composite material
US6967178B2 (en) 2002-07-02 2005-11-22 Kimberly-Clark Worldwide, Inc. Elastic strand laminate
US7320948B2 (en) 2002-12-20 2008-01-22 Kimberly-Clark Worldwide, Inc. Extensible laminate having improved stretch properties and method for making same
US7335273B2 (en) 2002-12-26 2008-02-26 Kimberly-Clark Worldwide, Inc. Method of making strand-reinforced elastomeric composites
US7361241B2 (en) * 2003-02-13 2008-04-22 Fleissner Gmbh Filamentary nonwoven bandage fabric
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
US7740786B2 (en) 2005-12-15 2010-06-22 Kimberly-Clark Worldwide, Inc. Process for making necked nonwoven webs having improved cross-directional uniformity

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