BULK NONWOVEN FABRIC AND ITS PRODUCTION AND FEMALE PART FOR HERCULE'S FASTENER (R)

Japanese Patent JP3131559

B2

PROBLEM TO BE SOLVED: To obtain a bulky nonwoven fabric whose ridge-like projection at a second fiber layer is useful as a female material for Hercule's fastener (R) by laminating the second fiber layer to a first face-shrinkable fiber layer, integrating them by linear interlacing followed by heat treatment.
SOLUTION: A first fiber layer 2 consisting of a thermally shrinkable fiber comprising a polymer containing at least 70wt.% of an ethylene-propylene random copolymer with a melting peak temp.: 130<Tm<145°C and having the maximal heat shrinkage of ≤50% or containing ≥30wt.% of latently shrinkable fiber developing three-dimensional crimping with heat is used. A second fiber layer 3 of polypropylene filament nonwoven fabric which does not substantially shrink at a temperature at which the first fiber layer 2 causes face shrinkage is laminated to at least one surface of the first fiber layer. The laminated fiber layers are injected with a high-pressure columnar water jet flow to form the interlaced areas 1 in lines. Then, they are heat-treated to form a ridge-like projection extending in the rectangular direction to the interlaced areas 1 whereby the objective bulky nonwoven fabric is obtained.

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JP2021504027	Fasteners with rail segments and posts

Hiroko Makihara

JP35466395A

February 05, 2001

December 07, 1995

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Daiwa Spinning Co., Ltd.

A44B18/00; B32B5/02; B32B5/26; D04H1/4291; D04H1/482; D04H1/492; D04H3/018; D04H5/03; (IPC1-7): D04H1/46; D04H1/42; D04H1/48

JP2133641A
JP633359A
JP73598A
JP754256A
JP4910309B1

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