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Title:
COMPOSITE NONWOVEN FABRIC CONTAINING ULTRAFINE FIBER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3905916
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To produce a composite nonwoven fabric having a high content of ultrafine continuous filaments and further a high tensile strength.
SOLUTION: This composite nonwoven fabric is produced by preparing a continuous filament nonwoven fabric using divisible type continuous filaments formed of a component A comprising a high-melting polymer and producing ultrafine continuous filaments and a component B comprising a low-melting polymer and producing ultrafine continuous filaments and having thermally fusible sections formed by thermally fusing the mutual divisible type continuous filaments with the component B at an interval kept therebetween, carrying out a drawing treatment of the resultant continuous filament nonwoven fabric in the longitudinal direction, dividing and splitting a part of the divisible type continuous filaments, orienting the divisible type continuous filaments in the substantial longitudinal direction, providing a precursor, laminating the resultant precursor onto a staple fiber nonwoven fabric containing accumulated staple fibers, performing a high-pressure liquid stream treatment of the prepared laminate, promoting the dividing and splitting of the divisible type continuous filaments, producing ultrafine fibers, interlacing the mutual staple fibers, forming a staple fiber nonwoven fabric and interlacing the ultrafine continuous filaments and staple fibers. The resultant composite nonwoven fabric contains the ultrafine fibers.


Inventors:
野口 信夫
松永 篤
鈴木 克昇
米沢 安広
松永 雅美子
中根 佑子
加藤 美智代
Application Number:
JP15082898A
Publication Date:
April 18, 2007
Filing Date:
June 01, 1998
Export Citation:
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Assignee:
ユニチカ株式会社
International Classes:
D01F6/04; D04H1/4382; D04H1/492; D04H1/498; D04H1/541; D04H3/04; D04H3/11; D04H5/03; (IPC1-7): D04H1/46; D01F6/04; D04H1/42; D04H1/54; D04H3/10; D04H5/02
Domestic Patent References:
JP10131021A
JP5186946A
JP1088457A
JP1096154A
Attorney, Agent or Firm:
奥村 茂樹