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Title:
SEA-ISLANDS TYPE COMPOSITE FIBER HAVING EXCELLENT MOISTURE ABSORBABILITY, TEXTURED YARN, AND FIBER STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2018/012318
Kind Code:
A1
Abstract:
A sea-islands type composite fiber characterized in that an island component is a polymer having moisture absorbability, the ratio (T/R) of the thickness (T) of an outermost layer to the diameter (R) of the fiber on a transverse cross-section of the fiber is 0.05 to 0.25, and the moisture absorption ratio difference (ΔMR) after a hot water treatment is 2.0 to 10.0%. The term "thickness of an outermost layer" refers to the difference between the radius of the fiber and the radius of a circumscribed circle formed by connecting apexes of island components located on an outermost periphery, and represents the thickness of a sea component in the outermost layer. Provided is a sea-islands type composite fiber which does not undergo the cracking of a sea component upon the volume expansion of a moisture-absorbable polymer that serves as an island component during a hot water treatment such as a dyeing treatment, rarely undergoes the formation of dying specks or fluffs when the composite fiber is formed into a fiber structure such as a woven fabric or a knitted fabric, has excellent quality, is reduced in the elution of the moisture-absorbable polymer, also has excellent moisture absorbability even after a hot water treatment such as a dyeing treatment, and also has dry touch inherent to a polyester fiber when the sea component is polyester.

Inventors:
KANO, Hidekazu (Toray Industries Inc., 4845, Mishima-sh, Shizuoka 52, 〒4118652, JP)
HAMANAKA, Shogo (Toray Industries Inc., 4845, Mishima-sh, Shizuoka 52, 〒4118652, JP)
MORIOKA, Hideki (Toray Industries Inc., 4845, Mishima-sh, Shizuoka 52, 〒4118652, JP)
TSUTSUMI, Kenichi (Toray Industries Inc., 4845, Mishima-sh, Shizuoka 52, 〒4118652, JP)
MOCHIZUKI, Katsuhiko (Toray Industries Inc., 4845, Mishima-sh, Shizuoka 52, 〒4118652, JP)
Application Number:
JP2017/024110
Publication Date:
January 18, 2018
Filing Date:
June 30, 2017
Export Citation:
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Assignee:
TORAY INDUSTRIES, INC. (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 66, 〒1038666, JP)
International Classes:
D01F8/14; D01F8/12; D02G1/02; D03D15/00; D04B1/16
Domestic Patent References:
WO1999049112A11999-09-30
Foreign References:
JP2016069770A2016-05-09
JPH0835121A1996-02-06
JPH04361615A1992-12-15
JPH06287815A1994-10-11
JP2002155426A2002-05-31
JP2004277911A2004-10-07
JPH1046433A1998-02-17
JP2014227633A2014-12-08
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