CORE-SHEATH COMPOSITE FIBER AND METHOD FOR PRODUCING SAME

Title:

CORE-SHEATH COMPOSITE FIBER AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2013/047051

Kind Code:

A1

Abstract:

Provided are a core-sheath composite fiber and a woven object in which peeling of a composite interface can be inhibited in the process of spinning a polyester and polyamide core-sheath composite fiber, fluffing and yarn breakage can be considerably mitigated, and elution of the polyester in an alkali can be considerably improved. Also provided are an ultrafine polyamide fiber, a woven object, and a textile product obtained by dissolving and removing the polyester included in the core-sheath composite fiber. The core-sheath composite fiber is characterized in having a polyamide as a sheath component and having as a core component a polyester that is readily eluted in an alkali, the polyester containing 2.0-5.5 mol% of an isophthalic acid component with respect to the total acid component and 3.0-6.0 mol% of an adipic acid component relative to the total acid component, the isophthalic acid component containing metal sulfonate groups, and the main repeating units of the polyester being constituted of ethylene terephthalate.

Inventors:

MIZOTA JUNICHI (JP)
IDA TAKASHI (JP)
TAKANAGA HIDETOSHI (JP)

Application Number:

PCT/JP2012/071603

Publication Date:

April 04, 2013

Filing Date:

August 27, 2012

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)
MIZOTA JUNICHI (JP)
IDA TAKASHI (JP)
TAKANAGA HIDETOSHI (JP)

International Classes:

D01F8/14

Foreign References:

JPS638207B2	1988-02-22
JPS6163768A	1986-04-01
JPH07310235A	1995-11-28
JP2008156769A	2008-07-10
JP2003336128A	2003-11-28
JP2006322131A	2006-11-30
JP2005194681A	2005-07-21

Other References: