DK2401147T3 - Biaksialt elastiske, ikkevævede laminater med uelastiske områder - Google Patents

Biaksialt elastiske, ikkevævede laminater med uelastiske områder Download PDF

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Publication number
DK2401147T3
DK2401147T3 DK09792961.6T DK09792961T DK2401147T3 DK 2401147 T3 DK2401147 T3 DK 2401147T3 DK 09792961 T DK09792961 T DK 09792961T DK 2401147 T3 DK2401147 T3 DK 2401147T3
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DK
Denmark
Prior art keywords
fabric
elastic
laminate
melt
width
Prior art date
Application number
DK09792961.6T
Other languages
English (en)
Inventor
Alistair Duncan Westwood
William Michael Ferry
Original Assignee
Exxonmobil Chem Patents Inc
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Publication of DK2401147T3 publication Critical patent/DK2401147T3/da

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
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    • 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
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    • 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
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    • 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
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (12)

1. Fremgangsmåde til at bibringe indskrænkning i et biaksialt elastisk, ikkevævet laminat, hvilken fremgangsmåde omfatter: tilvejebringelse af et biaksialt elastisk, ikkevævet laminat, der omfatter mindst ét smeltespundet, elastisk tekstilstof og mindst ét udvideligt, elastisk tekstilstof eller mindst én udvidelig, elastisk film, og smeltning af mindst en portion af mindst ét smeltespundet, elastisk tekstilstof til mindst ét af de udvidelige tekstilstoffer for at skabe mindst tre uelastiske områder langs bredden, som er parallelle med maskinretningen for det biaksialt elastiske, ikkevævede laminat, således at der bibringes elasticitet i krydsretningen i laminatet, hvor to af de uelastiske områder løber langs laminatets kant og ét uelastisk område løber ned ad laminatets midte, og hvor mindst ét af de uelastiske områder, der løber parallelt med maskinretningen, har en bredde på mindst 5 % af laminatets bredde i krydsretningen.
2. Metode ifølge krav 1, hvor mindst ét af de uelastiske områder, der løber parallel med laminatets maskinretning, har en bredde på mindst 10 % af laminatets bredde i krydsretningen.
3. Metode ifølge krav 1 eller 2, hvor laminatet har en bredde i krydsretningen og et uelastisk område, der løber vinkelret på laminatets maskinretning, idet det uelastiske område har en bredde i maskinretningen på mindst 2 % af laminatets bredde i krydsretningen.
4. Metode ifølge et hvilket som helst af de foregående krav, hvor smeltningen omfatter kalandrering af det biaksialt elastiske, ikkevævede laminat for at smelte mindst en portion af det smeltespundne, elastiske tekstilstof og danne en smeltning til mindst ét udvideligt tekstilstof.
5. Metode ifølge et hvilket som helst af de foregående krav, hvor det smeltspundne, elastiske tekstilstof omfatter en polyolefinbaseret elastomer med et smelteindeks på under 80 dg/min.
6. Metode ifølge et hvilket som helst af de foregående krav, der omfatter dannelse af mindst det smeltespundne elastiske tekstilstof ved ekstrudering af én eller flere propylen-a-olefinelastomer(er), alene eller blandet med en anden polymer, idet propylen-a-olefinelastomeren (-elastomererne) har et smelteindeks fra mindre end 80 dg/min, gennem mindst ét mundstykke med flere dyser for at danne flere kontinuerlige fibre, idet mindst én dyse opererer ved et smeltetryk fra mere end 500 psi (3,45 MPa) for at danne mindst ét elastisk tekstilstof.
7. Indskrænket, biaksialt elastisk, ikkevævet laminat, der omfatter mindst ét smeltespundet, elastisk tekstilstof og mindst ét udvideligt tekstilstof eller mindst én udvidelig film, hvor mindst én portion af lagene af tekstilstof er smeltet til hinanden i diskrete områder for at danne mindst tre uelastiske områder langs bredden, som er parallelle med maskinretningen for det biaksialt elastiske, ikkevævede laminat, således at der bibringes elasticitet i krydsretningen i laminatet, hvor to af de uelastiske områder løber langs laminatets kant og ét uelastisk område løber ned ad laminatets midte, og hvor mindst ét af de uelastiske områder, der løber parallelt med maskinretningen, har en bredde på mindst 5 % af laminatets bredde i krydsretningen.
8. Indskrænket, biaksialt elastisk, ikkevævet laminat ifølge krav 7, hvor der ikke forefindes klæbende stoffer mellem lagene.
9. Indskrænket, biaksialt elastisk, ikkevævet laminat ifølge krav 7 eller 8, hvor det elastiske tekstilstof omfatter en elastomer, som er valgt fra den gruppe, der udgøres af propylen-a-olefinelastomer, naturligt gummi, syntetisk polyisopren, butylgummi, halogenerede butylgummier, polybutadien, styren-butadien-gummi, styren-blokcopolymerer, nitrilgummi, hydrogenerede nitrilgummier, chloroprengummi, polychloropren, neopren, ethylene-propylen-gummi, ethylen-propylen-dien-gummi, epichlorhydringummi, polyacrylgummi, siliconegummi, fluorsiliconegummi, fluorelastomerer, perfluorelastomerer, polyether-blockamider, chlorsulfoneret polyethylen, ethylenvinylacetat, randomiserede ethylen-a-olefin-copolymerer og ethylen-a-olefin-blokcopolymerer, termoplastiske elastomerer, termoplastiske vulkanisater, termoplastisk polyurethan, termoplastiske definer, polysulfidgummi samt blandinger af to eller flere af disse elastomerer.
10. Indskrænket, biaksialt elastisk, ikkevævet laminat ifølge et hvilket som helst af kravene 7 til 9, hvor det smeltespundne, elastiske tekstilstof omfatter en polyolefinbaseret elastomer med et smelteindeks på under 80 dg/min.
11. Indskrænket, biaksialt elastisk, ikkevævet laminat ifølge et hvilket som helst af kravene 7 til 9, hvor det biaksialt elastiske, ikkevævede laminat omfatter to eller flere lag af tekstilstoffer over for hinanden, der omfatter en blanding af to eller flere typer fibre, der omfatter polypropylen, polyethylenterephthalat, viskose, bomuld og et elastisk tekstilstof, heriblandt en propylen-a-olefinelastomer.
12. Absorptions- eller barriereprodukt, der omfatter et indskrænket, biaksialt elastisk, ikkevævet laminat ifølge et hvilket som helst af kravene 7 til 11, eller som er fremstillet ved anvendelse af en metode ifølge et hvilket som helst af kravene 1 til 6, idet artiklerne er valgt blandt produkter til personlig pleje, bleer til babyer, blebukser, absorberende underlag, svømmetøj, klude, hygiejneprodukter til kvinder, bandager, produkter til sårpleje, beklædningsgenstande til medicinsk brug, operationskitler, filtre, produkter til inkontinente voksne, operationsafdækninger, beklædningsmateriale, beklædningsgenstande, beskyttende beklædning, tøj eller rengøringsartikler og -apparater.
DK09792961.6T 2009-02-27 2009-09-24 Biaksialt elastiske, ikkevævede laminater med uelastiske områder DK2401147T3 (da)

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