THERMALLY EXTENSIBLE FIBER

Title:

THERMALLY EXTENSIBLE FIBER

Document Type and Number:

WIPO Patent Application WO/2007/066599

Kind Code:

A1

Abstract:

A thermally extensible fiber obtained by heat-treating or crimping a conjugated fiber which is composed of the first resin component having an orientation index of 30 to 70% and the second resin component having a melting or softening point lower than the melting point of the first resin component and an orientation index of 40% or above and in which the second resin component exists continuously in the lengthwise direction of the fiber in such a state as to constitute at least part of the surface of the fiber. The thermally extensible fiber can be extended under heating at a temperature lower than the melting point of the first resin component and exhibits thermal self extension higher than those of conventional extensible fibers.

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Inventors:

MATSUI MANABU (JP)
USUI YOSHIJI (JP)
KAWAKAMI SHIGEKI (JP)

Application Number:

PCT/JP2006/324112

Publication Date:

June 14, 2007

Filing Date:

December 01, 2006

Export Citation:

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Assignee:

KAO CORP (JP)
MATSUI MANABU (JP)
USUI YOSHIJI (JP)
KAWAKAMI SHIGEKI (JP)

International Classes:

D01F8/06; D01F8/04; D02J13/00; D04H1/541; D04H1/544

Domestic Patent References:

WO2004059050A1

2004-07-15

Foreign References:

JP2003119625A	2003-04-23
JP2006316399A	2006-11-24
JPS4328262B1
JP2000096378A	2000-04-04

Other References:

"Materials for Polymer Processing", 10 February 1998, SIGMA PUBLISHING CO., LTD., article "Japan Society of Polymer Processing"
SENI GAKKAISHI, FIBER STRUCTURE FORMATION IN HIGH-SPEED MELT SPINNING OF SHEATH/CORE TYPE BICOMPONENT FIBERS, vol. 51, no. 9, 1995, pages 408
2005: "Plastic Seikei Zairyo Syotorihiki Binran", 30 August 2004, THE CHEMICAL DAILY CO., LTD.

Attorney, Agent or Firm:

HATORI, Osamu et al. (8-6 Akasaka 1-chom, Minato-ku Tokyo 52, JP)

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