Title:
CORE SHEATH COMPOSITE FIBER FOR SHRINKAGE SPLIT FIBER
Document Type and Number:
Japanese Patent JP2017128830
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a core sheath composite fiber for shrinkage split fiber excellent in color development, dyeing fastness and feeling.SOLUTION: In a core sheath composite fiber having polyamide as a core component 2 and polyester as a sheath component 1, the polyester component is copolymer polyester having main repeating unit constituted by ethylene terephthalate and containing isophthalic acid component containing a metal sulfonate group of 2.0 to 5.5 mol% and an adipic acid dimethyl component of 3.0 to 6.0 mol% based on total acid. There is provided a core sheath composite fiber, wherein sheath part 1 consisting of polyester is divided into 3 or more by polyamide of the core component 2 with a fiber cross section shape. The core sheath composite fiber is shrinkage split by a treatment agent containing a swelling agent of polyamide with a state of fiber or a state of textile having the core sheath composite fiber in at least a part and dyed with known cationic dye by a known dying method after the shrinkage split treatment.SELECTED DRAWING: Figure 1
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Inventors:
MIZOTA JUNICHI
TAKANAGA HIDETOSHI
TAKANAGA HIDETOSHI
Application Number:
JP2016009938A
Publication Date:
July 27, 2017
Filing Date:
January 21, 2016
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
D01F8/14; D03D15/00; D04B1/16; D04B21/16
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