BULKY NONWOVEN FABRIC AND ITS PRODUCTION

Japanese Patent JP3657700

B2

PROBLEM TO BE SOLVED: To obtain a bulky nonwoven fabric excellent in mechanical strength and dimensional stability by interlacing a short fiber web with an oriented nonwoven fabric comprising thermoplastic filaments followed by conducting a heat treatment.
SOLUTION: First, an oriented nonwoven fabric (b) is produced by unidirectionally orienting by a factor of 3-20 a filament nonwoven fabric produced by spinning a thermoplastic resin such as a polyolefin or polyester. The oriented nonwoven fabric (b) is either a unidirectionally oriented nonwoven fabric composed of at least one layer of constituent filaments 2b oriented nearly unidirectionally, or an oriented cross-laminated nonwoven fabric (c) with a plurality of the nearly unidirectionally oriented constituent filaments 2b laminated mutually so as to cross their orientational axes with one another. Subsequently, the oriented nonwoven fabric (b) is interlaced with a staple fiber web (a) comprising natural fibers, regenerated fibers or synthetic fibers by water jet technique followed by conducting a heat treatment to effect shrinkage of the filaments 2b and crimping of the staple fibers 2a constituting the staple fiber web (a), thus obtaining the objective bulky nonwoven fabric 1.

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Kazuhiko Kurihara
Hiroshi Yazawa
Sadayuki Ishiyama
Jun Yamada

JP17753796A

June 08, 2005

June 18, 1996

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Shin Nippon Petrochemical Co., Ltd.
Polymer Processing Laboratory Co., Ltd.

D06M17/00; D04H3/018; D04H5/03; D04H13/00; (IPC1-7): D04H5/02

JP8109563A
JP5025763A

Hajime Maejima

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