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Title:
POLYAMIDE COMPOSITE FIBER AND FINISHED YARN
Document Type and Number:
WIPO Patent Application WO/2021/020354
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polyamide composite fiber obtained from a woven or knitted fabric having excellent stretchability or a finished yarn comprising the same. This polyamide composite fiber is an eccentric core-in-sheath type of polyamide composite fiber comprising two kinds of crystalline polyamide (A) and crystalline polyamide (B) differing in composition from each other, wherein the water absorptivity and thermal contraction stress of the polyamide composite fiber after being left to stand still for 72 hours in an environment in which the temperature is 30℃ and the relative humidity is 90 RH% are 5.0% or less and 0.15 cN/dtex or more, respectively.

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Inventors:
HUANG RU (JP)
YAMAGUCHI SUMIO (JP)
Application Number:
PCT/JP2020/028737
Publication Date:
February 04, 2021
Filing Date:
July 27, 2020
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D01F8/12; D02G3/02
Domestic Patent References:
WO2015129735A12015-09-03
WO2018110523A12018-06-21
WO2017221713A12017-12-28
Foreign References:
JP2001159030A2001-06-12
JPS6028514A1985-02-13
JPH10266020A1998-10-06
JP2000290837A2000-10-17
JP2009057679A2009-03-19
JP2002363827A2002-12-18
JP2019141540A2019-08-29
Other References:
TODOKI MINORU: "DSC (3)-Glass transition behavior of polymers", JOURNAL OF THE TEXTILE SOCIETY (FIBERS AND INDUSTRY, vol. 65, no. 10, 2009
See also references of EP 4006216A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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