WO2003007864A1 - Stratifie elastique non tisse - Google Patents

Stratifie elastique non tisse Download PDF

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Publication number
WO2003007864A1
WO2003007864A1 PCT/US2001/022493 US0122493W WO03007864A1 WO 2003007864 A1 WO2003007864 A1 WO 2003007864A1 US 0122493 W US0122493 W US 0122493W WO 03007864 A1 WO03007864 A1 WO 03007864A1
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WO
WIPO (PCT)
Prior art keywords
elastic
woven
fabric
film
web
Prior art date
Application number
PCT/US2001/022493
Other languages
English (en)
Inventor
Valeria Erdos
Original Assignee
Polymer Group, Inc.
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 Polymer Group, Inc. filed Critical Polymer Group, Inc.
Priority to EP01955852A priority Critical patent/EP1424975A1/fr
Priority to PCT/US2001/022493 priority patent/WO2003007864A1/fr
Priority to MXPA04000404A priority patent/MXPA04000404A/es
Publication of WO2003007864A1 publication Critical patent/WO2003007864A1/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
    • B32B37/14—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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • 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
    • B32B2307/51—Elastic
    • 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
    • B32B37/15—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 being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—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 being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • 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
    • B32B38/1883—Detensioning

Definitions

  • the present invention relates generally to composite elastic fabrics, and more particularly to elastic fabrics that are comprised of a non-woven layer laminated to an elastic layer.
  • the prior art contains a number of examples of composite elastic fabrics comprised of a non- woven layer and an elastic layer. Such fabrics are useful for applications such as garments, disposable medical products, personal hygiene products, industrial products, and diapers. Depending on the particular application, the fabric may require particular properties such as a desired degree of elongation / recovery, porosity, softness, etc. These properties may be influenced by the selection of the particular non- woven component layer and the elastic component layer.
  • the non-woven layer may be laminated to the elastic component layer with a chemical bond, mechanical bond, or by thermal bonding. Tension may be applied to either the elastic member or the nonelastic member prior to laminating to provide the final fabric with its elastic elongation capability.
  • the recovery capability of the composite is a function only of the recovery of the elastic member.
  • the non-woven layer can be tensioned prior to joining a tensioned or relaxed elastic member.
  • the composite fabric When relaxed, the composite fabric again shows a puckered surface with "gathers" of the non- woven between bond points.
  • the previously described 'positive stop' feature is also again manifested by the extension of the gathers in the non- woven layer when tension is applied.
  • this method produces a dimensional distortion in the non- woven layer referred to as 'necking' or 'necking in.'
  • U.S. Patent No. 5,114,781 discloses a method for producing a laminate which has CD elastic stretch and recovery.
  • the process disclosed is based on laminating a 'reversibly necked' substrate under tension to a tensioned elastic member.
  • the provided definition of a 'reversibly necked' fabric is one that has been treated in some way while in a tensioned, necked-in state to impart memory to the material. The effect of this memory is to induce the fabric to return to its necked-in configuration after tension is applied in the CD.
  • the fabric and method disclosed result in a fabric surface that is puckered and gathered as the necked-in fabric is bonded to a tensioned elastic layer.
  • the reversible necking of the non-elastic layer requires an additional process step with associated costs and efforts.
  • the present invention comprises a method for making a non-woven elastic laminate fabric, as well as the elastic laminate fabric produced thereby.
  • the elastic non-woven laminate fabric of the invention comprises a non-woven fabric web having a CD elongation of at least 120% and a basis weight of between about 10 - 100 gm/m 2 laminated to an elastic film layer comprised of a vinylidene isoprene polymer having a thickness of between 0.5 to 3.0 mils.
  • the resulting elastic laminate non- woven fabric of the invention has CD elongation of at least 120%, MD elongation of 25- 70%, and a CD elastic recovery of at least 85% after multiple cycles of 100% elongation.
  • % elongation as used herein may be defined as:
  • % recovery may be defined as:
  • the non- woven web component of the fabric of the invention has a CD elongation of at least 150% and a basis weight of between about 15-50 gm/m 2 .
  • the preferred non-woven web may comprise spunbond or meltblown filament webs, or hydroentangled, carded staple fibers.
  • Preferred materials of composition for the non- woven web of the invention include poly(ethylene terephthalate) ("PET”) and polyolefins.
  • PET poly(ethylene terephthalate)
  • PET poly(ethylene terephthalate)
  • the use of the preferred film also provides advantages over the use of elastic netlike structures or reticulated films in that more uniform elongation and a more uniform, wrinkle free surface appearance result.
  • the film is preferably extrusion coated onto the non-woven web, while the web is in a relaxed, un-tensioned state (except for tensioning as may be required for normal web processing).
  • the preferred extrusion coating of the film onto the non-woven web results in a final fabric having a smooth, ungathered or puckered surface, as all components are joined in an effectively relaxed configuration. Further, extrusion coating provides for large bonding interface area between layers, so that a coherent final laminate fabric results.
  • Other means of attachment comprise bonding with an adhesive or thermal bonding by calendering.
  • the fabric of the invention has a CD elongation of at least 120% and preferably greater than 150% that is superior to that of elastic non- woven laminates of the prior art. Further, the elastic recovery of the fabric of the invention, which is 85% or greater after several cycles of 100% elongation, is also superior to that of any prior art elastic non- woven laminate fabric.
  • a preferred embodiment of the laminate elastic fabric of the invention comprises an elastic layer sandwiched in between two non-woven outer layers.
  • a first non-woven web is as described above, with a CD elongation of at least 120%, with at least 150% most preferred, and a basis weight of between about 10-50 gm/m 2 .
  • the method of the invention generally comprises the steps of providing a non- woven fabric web having a CD elongation of at least 120% and a basis wejght of between 10-50 gm/m 2 , attaching an elastic film to the non- woven web with both the web and the film in substantially relaxed, unstretched states.
  • the film comprises a vinylidene isoprene polymer with a thickness of between about 0.5 and 3.0 mils.
  • the preferred means of attachment of the film to the non-woven web is by extrusion coating.
  • the final laminate fabric of the invention has a smooth surface free from the puckering and/or gathering of non-woven elastic composites of the prior art.
  • the preferred non-woven web provided in the method of the invention is as generally described above in relation to the preferred fabric of the invention. It has a CD elongation of at least 150% and a basis weight of between about 10-100 gm/m 2 .
  • the web may comprise spunbond or meltblown continuous filaments, or more preferably hydroentangled, or highly randomized, carded staple fiber webs.
  • the web may be prepared in line with the joining of the layers, or may be prepared separately.
  • Preferred materials of composition include polyolefins, and poly(ethylene terephthalate) (PET).
  • the preferred vinylidene isoprene polymer film of the method of the invention is also as described above in association with the preferred fabric of the invention. Most preferably it has a thickness of about 2 mils.
  • a preferred embodiment of the method of the invention comprises the steps of providing a first non- woven web having a CD elongation of at least 120%, with at least 150% most preferred, and a basis weight of between about 10-50 gm/m 2 .
  • an elastic vinylidene isoprene film is extrusion coated onto the web in a thickness as described above, including preferred ranges.
  • a second non-woven web having physical properties and characteristics similar to the first web, including basis weight and CD elongation, is then thermally bonded to the exposed side of the film with both the second web and the first web and film laminate in substantially relaxed, unstretched states. The film is thereby sandwiched between the two non- woven layers.
  • the thermal point bonding of the second layer to the exposed side of the film is preferably carried out at a temperature in the range of the melting temperature of the film, 200 - 220°C, to result in an intimate co-mingled bond between both outer non- woven layers and the film layer therebetween.
  • An optional, additional step in the method of the invention further comprises tensioning the laminated fabric of the invention in the machine direction after joining of the layers in a calender nip and before winding the fabric onto a winder.
  • the tension is released before winding, so that the fabric is wound in a relaxed state.
  • the tensioning causes some bonds to break in the nonwoven fabric layers. This breakage increases the overall elongation capacity of the laminate fabric, and decreases the stretch force of the
  • the method of the invention thereby provides an improved process for making an elastic non-woven laminate fabric that does not require applying unusual tension to or otherwise stretching either the non-woven layer(s) or the elastic layer, instead allowing fabrication while the layers are in a substantially relaxed, un-extended state.
  • the present invention therefore avoids the additional efforts and expenses associated with the stretching of one or all of the layers during processing, specifically the specialized equipment and process controls required to provide and maintain a tensioning station in the production line.
  • the method of the invention is a simpler and more efficient method than those of the prior art. Also, the method of the invention results in a fabric having CD elongation of at least 120%, and elastic recovery of at least 85% after 3 cycles of 100% elongation.
  • Fig. 1 shows a schematic diagram of the preferred method of the invention.
  • Fig. 2 shows a cross section view of the preferred fabric of the invention.
  • Non-woven layer 2 having a CD elongation of at least 120%, and more preferably 150%, is unwound from roller 4.
  • Non-woven 2 has a MD elongation in the range of 25-70%, with 25-45% most common. In general, the lower the MD / CD elongation ratio, the higher the CD elongation; i.e. the more CD orientation of the fibers / filaments, the greater the CD elongation.
  • Non-woven layer 2 may comprise spunbond or meltblown filament webs, or hydroentangled or carded staple fibers webs, such as highly randomized carded staple fiber webs. Hydroentangled webs and highly randomized, carded webs that are adhesive or thermal bonded are preferred.
  • composition for web 2 are polyolefins and PET.
  • a preferred basis weight for web 2 is between about 10 - 100 gm/m 2 , with 15-50 gm m 2 most preferred.
  • Table 1 lists some examples of suitable non-woven substrates layers and
  • the non-woven substrates of the invention are not limited to the examples of
  • Elastic film 6 comprises a vinylidene isoprene polymer having a thickness of
  • the preferred vinylidene isoprene polymer film 6 of the fabric of the invention has a thickness of about 2 mils, and comprises 70-95% of a block copolymer with the general
  • a second preferred film composition comprises 70-95% of a block copolymer with the general formula A x -(BA) y -BA where A is a monovinylidene aromatic monomer, B is a conjugated diene, x is from 0-1, and is from 0-3.
  • Second non-woven layer 10 is next unwound from roller 12 and deposited on the
  • Non- woven web 10 is deposited in a substantially relaxed, unstretched state to a likewise un-tensioned web 2 / film 6 laminate. That is, the three
  • Non- woven layer 10 may have substantially the same physical characteristics as
  • first non-woven layer 2 and likewise may be comprised of the same materials.
  • non- woven layer 10 may have different physical properties from first non- woven layer 2, or be comprised of different materials, as may be desired. It is critical, however, that the second non- woven layer 10 has a CD elongation of at least 120%, and preferably of at least 150%. Table 1 above is referred to for examples of suitable webs for comprising non-woven layer 10. Heated calender rolls 14 thermally bond second non- woven layer 10, film 6, and first non-woven layer 2. Thus film 6 is sandwiched between outer non-woven web layers 2 and 10.
  • calender rollers 14 operate at a temperature in the melting range of film 6 so that an integral bond results between all three layers, with fibers or filaments in the outer nonwoven layers thereby intermingled with the film layer at the bond point. Film 6 is actually observed to thin at the bond points.
  • the laminated fabric 16 of the invention is tensioned in the MD with tension rollers 18.
  • Tensioning in the MD breaks some of the fibers in the outer non-woven layers, leading to increased MD elongation and decreased stretch force in fabric 16, as well as generally improved hand.
  • Tension in fabric 16 is released after passing tension rollers 18, and laminated elastic fabric 16 is finally wound on roller 20 in a substantially relaxed, un-stretched state.
  • Fig. 2 is a cross section of a preferred fabric 16 of the invention, as produced by the preferred process described above.
  • Fabric 16 comprises outer non- woven layers 2 and 10 sandwiching elastic film layer 6.
  • Non- oven outer layers 2 and 10 must have a CD elongation of at least 120%, and preferably of at least 150%. They preferably have a basis weight in the range of 15-50 gm/m 2 , and may comprise spunbond or meltblown continuous filaments, or hydroentangled, carded, highly randomized staple fibers.
  • Preferred materials of composition comprise polyolefins and PET. Reference is made to
  • the preferred fabric of the invention has a surface that is substantially flat and is not bunched
  • Preferred elastic film 6 is the VECTOR film described above, available from the Dexco Corp., in Plaquemine, LA.; with a preferred thickness of between about 0.5 and 3 mils and a most preferred thickness of about 2 mils.
  • film 6 is extrusion coated
  • the preferred laminate fabric of the invention has a CD elasticity of at least 120% and most preferably greater than 150% that is superior to that of elastic non- woven
  • Non-woven fabrics show hysteresis recovery when cycled to limits below their yield point. The higher the overall elongation of the non-woven, the more recovery power the fabric will be able to
  • a laminate made with a non-woven substrate having 120% elongation would be expected to provide a lower elastic recovery from a 100% extension than a laminate prepared with a substrate having 175% elongation.
  • Table 2 illustrates the superior recovery of the fabrics of the invention over prior art fabrics.
  • Table 2 also shows the reduced elastic force of the fabrics of the invention over prior art fabrics.
  • the fabrics of the invention combine increased recovery with reduced elastic force over prior art fabrics, which is a suprising result of the fabric and method of the invention as typically increased recovery is only achieved through increased elastic force.
  • the fabrics of the invention are able to achieve a relatively gentle retractive force through their unique method of fabrication; and particularly due to the use of the vinylidene isoprene film of the invention.
  • the high level of recovery after multiple extensions that the fabrics of the invention show is a result of their unique design Because the laminated layers are joined without application of tension, there is no initial introduction of stress during formation to structurally deform the non-elastic members or to reduce the elasticity of the elastic member. As the non-elastic member is not under excessive tension during manufacture of the composite, the natural recovery of the high elongation fabric is able to contribute to the recovery performance of the final laminate fabric.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un tissu stratifié élastique (16) utilisé dans des applications comprenant des produits sanitaires, des habits, et similaire qui comprend un film polymère d'isoprène de vinydilène élastique (6) compris entre deux couches non tissées externes (2 & 10), la seconde couche externe (10) étant lustrée sur le côté exposé du film. Le stratifié de tissu élastique composite (116) possède un étirement dans le sens du cisaillement d'au moins 120 % et une récupération d'au moins 85 %, après plusieurs cycles d'étirement de 100 %. Cette invention concerne aussi un procédé de fabrication du tissu stratifié élastique non tissé.
PCT/US2001/022493 2001-07-18 2001-07-18 Stratifie elastique non tisse WO2003007864A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01955852A EP1424975A1 (fr) 2001-07-18 2001-07-18 Stratifie elastique non tisse
PCT/US2001/022493 WO2003007864A1 (fr) 2001-07-18 2001-07-18 Stratifie elastique non tisse
MXPA04000404A MXPA04000404A (es) 2001-07-18 2001-07-18 Material laminado elastico no tejido.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/022493 WO2003007864A1 (fr) 2001-07-18 2001-07-18 Stratifie elastique non tisse

Publications (1)

Publication Number Publication Date
WO2003007864A1 true WO2003007864A1 (fr) 2003-01-30

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PCT/US2001/022493 WO2003007864A1 (fr) 2001-07-18 2001-07-18 Stratifie elastique non tisse

Country Status (3)

Country Link
EP (1) EP1424975A1 (fr)
MX (1) MXPA04000404A (fr)
WO (1) WO2003007864A1 (fr)

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EP2228209A1 (fr) * 2009-03-11 2010-09-15 Nordenia Deutschland Gronau GmbH Complexe multicouche elastique, en particulier pour un système de feremture de couche
EP2299956A2 (fr) * 2008-06-30 2011-03-30 Kimberly-Clark Worldwide, Inc. Composite élastique contenant un revêtement non tissé léger et de faible résistance
EP2397320A3 (fr) * 2009-02-06 2012-04-04 Nike International Ltd Éléments textiles non tissés thermoplastiques
EP2511407A1 (fr) * 2011-04-11 2012-10-17 Fiberweb Holdings Limited Tissu multicouche et procédé de fabrication associé
WO2014097004A1 (fr) * 2012-12-19 2014-06-26 Kimberly-Clark Worldwide, Inc. Stratifié et procédé permettant de fabriquer ce dernier
US8850719B2 (en) 2009-02-06 2014-10-07 Nike, Inc. Layered thermoplastic non-woven textile elements
US8906275B2 (en) 2012-05-29 2014-12-09 Nike, Inc. Textured elements incorporating non-woven textile materials and methods for manufacturing the textured elements
US8968408B2 (en) 2007-02-21 2015-03-03 Benvenue Medical, Inc. Devices for treating the spine
EP3000451A1 (fr) * 2014-09-23 2016-03-30 Sandler AG Non-tisse extensible
US9579848B2 (en) 2009-02-06 2017-02-28 Nike, Inc. Methods of joining textiles and other elements incorporating a thermoplastic polymer material
WO2018011516A1 (fr) * 2016-07-15 2018-01-18 Aplix Ensemble lamine et procédé de fabrication
WO2018044286A1 (fr) * 2016-08-31 2018-03-08 Kimberly-Clark Worldwide, Inc. Élastique lié non extensible à filet élastique
US10561537B2 (en) 2016-08-12 2020-02-18 The Procter & Gamble Company Elastic laminates and methods for assembling elastic laminates for absorbent articles
US10952910B2 (en) 2017-03-27 2021-03-23 The Procter & Gamble Company Elastomeric laminate with soft noncrimped spunbond fiber webs
US11135100B2 (en) 2013-05-03 2021-10-05 The Procter & Gamble Company Absorbent articles comprising stretch laminates
US11446186B2 (en) 2016-08-12 2022-09-20 The Procter & Gamble Company Absorbent article with ear portion
US11642248B2 (en) 2016-08-12 2023-05-09 The Procter & Gamble Company Absorbent article with an ear portion
US11779071B2 (en) 2012-04-03 2023-10-10 Nike, Inc. Apparel and other products incorporating a thermoplastic polymer material
US11944522B2 (en) 2019-07-01 2024-04-02 The Procter & Gamble Company Absorbent article with ear portion

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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8968408B2 (en) 2007-02-21 2015-03-03 Benvenue Medical, Inc. Devices for treating the spine
AU2009265214B2 (en) * 2008-06-30 2013-07-04 Kimberly-Clark Worldwide, Inc. Elastic composite containing a low strength and lightweight nonwoven facing
EP2299956A2 (fr) * 2008-06-30 2011-03-30 Kimberly-Clark Worldwide, Inc. Composite élastique contenant un revêtement non tissé léger et de faible résistance
CN102076303A (zh) * 2008-06-30 2011-05-25 金伯利-克拉克环球有限公司 包含低强度和轻质无纺衬面的弹性复合材料
US8603281B2 (en) 2008-06-30 2013-12-10 Kimberly-Clark Worldwide, Inc. Elastic composite containing a low strength and lightweight nonwoven facing
EP2299956A4 (fr) * 2008-06-30 2012-08-01 Kimberly Clark Co Composite élastique contenant un revêtement non tissé léger et de faible résistance
US9682512B2 (en) 2009-02-06 2017-06-20 Nike, Inc. Methods of joining textiles and other elements incorporating a thermoplastic polymer material
EP3613584A1 (fr) * 2009-02-06 2020-02-26 NIKE Innovate C.V. Éléments textiles non tissés thermoplastiques
EP2397320A3 (fr) * 2009-02-06 2012-04-04 Nike International Ltd Éléments textiles non tissés thermoplastiques
US10174447B2 (en) 2009-02-06 2019-01-08 Nike, Inc. Thermoplastic non-woven textile elements
US8850719B2 (en) 2009-02-06 2014-10-07 Nike, Inc. Layered thermoplastic non-woven textile elements
US10138582B2 (en) 2009-02-06 2018-11-27 Nike, Inc. Thermoplastic non-woven textile elements
US10131091B2 (en) 2009-02-06 2018-11-20 Nike, Inc. Methods of joining textiles and other elements incorporating a thermoplastic polymer material
US9227363B2 (en) 2009-02-06 2016-01-05 Nike, Inc. Thermoplastic non-woven textile elements
US10982364B2 (en) 2009-02-06 2021-04-20 Nike, Inc. Thermoplastic non-woven textile elements
US9579848B2 (en) 2009-02-06 2017-02-28 Nike, Inc. Methods of joining textiles and other elements incorporating a thermoplastic polymer material
US10982363B2 (en) 2009-02-06 2021-04-20 Nike, Inc. Thermoplastic non-woven textile elements
US9732454B2 (en) 2009-02-06 2017-08-15 Nike, Inc. Textured elements incorporating non-woven textile materials and methods for manufacturing the textured elements
US10625472B2 (en) 2009-02-06 2020-04-21 Nike, Inc. Methods of joining textiles and other elements incorporating a thermoplastic polymer material
WO2010102742A1 (fr) * 2009-03-11 2010-09-16 Nordenia Deutschland Gronau Gmbh Stratifié élastique, notamment pour éléments de fermeture élastiques de couche-culotte
EP2228209A1 (fr) * 2009-03-11 2010-09-15 Nordenia Deutschland Gronau GmbH Complexe multicouche elastique, en particulier pour un système de feremture de couche
EP2511407A1 (fr) * 2011-04-11 2012-10-17 Fiberweb Holdings Limited Tissu multicouche et procédé de fabrication associé
US11779071B2 (en) 2012-04-03 2023-10-10 Nike, Inc. Apparel and other products incorporating a thermoplastic polymer material
US8906275B2 (en) 2012-05-29 2014-12-09 Nike, Inc. Textured elements incorporating non-woven textile materials and methods for manufacturing the textured elements
WO2014097004A1 (fr) * 2012-12-19 2014-06-26 Kimberly-Clark Worldwide, Inc. Stratifié et procédé permettant de fabriquer ce dernier
US11590033B2 (en) 2013-05-03 2023-02-28 The Procter & Gamble Company Absorbent articles comprising stretch laminates
US11179278B2 (en) 2013-05-03 2021-11-23 The Procter & Gamble Company Absorbent articles comprising stretch laminates
US11135100B2 (en) 2013-05-03 2021-10-05 The Procter & Gamble Company Absorbent articles comprising stretch laminates
EP3000451A1 (fr) * 2014-09-23 2016-03-30 Sandler AG Non-tisse extensible
US11504940B2 (en) 2016-07-15 2022-11-22 Aplix Laminated assembly and manufacturing method
CN109476112A (zh) * 2016-07-15 2019-03-15 埃普利克斯公司 层叠组件及其制造方法
FR3053921A1 (fr) * 2016-07-15 2018-01-19 Aplix Ensemble lamine et procede de fabrication
WO2018011516A1 (fr) * 2016-07-15 2018-01-18 Aplix Ensemble lamine et procédé de fabrication
US10568775B2 (en) 2016-08-12 2020-02-25 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11446186B2 (en) 2016-08-12 2022-09-20 The Procter & Gamble Company Absorbent article with ear portion
US10959887B2 (en) 2016-08-12 2021-03-30 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11877914B2 (en) 2016-08-12 2024-01-23 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11071654B2 (en) 2016-08-12 2021-07-27 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11083633B2 (en) 2016-08-12 2021-08-10 The Procter & Gamble Company Elastic laminates and methods for assembling elastic laminates for absorbent articles
US10575993B2 (en) 2016-08-12 2020-03-03 The Procter & Gamble Company Methods and apparatuses for assembling elastic laminates with different bond densities for absorbent articles
US10568776B2 (en) 2016-08-12 2020-02-25 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11266543B2 (en) 2016-08-12 2022-03-08 The Procter & Gamble Company Methods and apparatuses for assembling elastic laminates with different bond densities for absorbent articles
US11872113B2 (en) 2016-08-12 2024-01-16 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11331223B2 (en) 2016-08-12 2022-05-17 The Procter & Gamble Company Methods and apparatuses for assembling elastic laminates with different bond densities for absorbent articles
US11382798B2 (en) 2016-08-12 2022-07-12 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11642248B2 (en) 2016-08-12 2023-05-09 The Procter & Gamble Company Absorbent article with an ear portion
US10966876B2 (en) 2016-08-12 2021-04-06 The Procter & Gamble Company Methods and apparatuses for assembling elastic laminates with different bond densities for absorbent articles
US10561537B2 (en) 2016-08-12 2020-02-18 The Procter & Gamble Company Elastic laminates and methods for assembling elastic laminates for absorbent articles
US11642250B2 (en) 2016-08-12 2023-05-09 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11596557B2 (en) 2016-08-12 2023-03-07 The Procter & Gamble Company Method and apparatus for assembling absorbent articles
US11617687B2 (en) 2016-08-12 2023-04-04 The Procter & Gamble Company Methods and apparatuses for assembling elastic laminates with different bond densities for absorbent articles
GB2568203A (en) * 2016-08-31 2019-05-08 Kimberly Clark Co Non-stretch bonded elastic with elastic net
GB2568203B (en) * 2016-08-31 2022-08-17 Kimberly Clark Co Non-stretch bonded elastic with elastic net
WO2018044286A1 (fr) * 2016-08-31 2018-03-08 Kimberly-Clark Worldwide, Inc. Élastique lié non extensible à filet élastique
US11833018B2 (en) 2017-03-27 2023-12-05 The Procter & Gamble Company Elastomeric laminate with soft noncrimped spunbond fiber webs
US11278458B2 (en) 2017-03-27 2022-03-22 The Procter & Gamble Company Crimped fiber spunbond nonwoven webs/laminates
US10952910B2 (en) 2017-03-27 2021-03-23 The Procter & Gamble Company Elastomeric laminate with soft noncrimped spunbond fiber webs
US11944522B2 (en) 2019-07-01 2024-04-02 The Procter & Gamble Company Absorbent article with ear portion

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Publication number Publication date
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