Title:
COMPOSITE FIBER, STRUCTURAL YARN, WOVEN AND KNITTED FABRIC, AND CLOTHING
Document Type and Number:
WIPO Patent Application WO/2024/018818
Kind Code:
A1
Abstract:
Provided are: a composite fiber which satisfies both stretch performance and abrasion resistance and exhibits high sensitivity of a woolen material having the characteristics of softness, deep color development, and bulkiness among wool materials; and a combined filament composite fiber, a woven and knitted fabric, and clothing containing the same. To this end, a composite fiber according to the present invention contains a polyester-based thermoplastic resin A and a polyester-based thermoplastic resin B and satisfies the following requirements. (1) The difference (MA-MB) between the weight-average molecular weight MA of the polyester-based thermoplastic resin A and the weight-average molecular weight MB of the polyester-based thermoplastic resin B is 2,000-15,000. (2) The apparent thick-thin ratio (Dthick/Dthin) of the composite fiber is 1.00-1.04. (3) The crimp elongation rate of the composite fiber is 3.0-25.0%. (4) In a cross section of the composite fiber, the polyester-based thermoplastic resin B covers the polyester-based thermoplastic resin A, and the ratio (tmin/D) of the minimum value tmin of the thickness t of the polyester-based thermoplastic resin B to the fiber diameter D of the composite fiber is 0.01-0.10. (5) In the cross section of the composite fiber, the length Ct of a portion, in which a region having the thickness t satisfying 1.00 tmin≤t≤1.05 tmin and the circumferential line of the composite fiber are overlapped, satisfies Ct≥0.33C with respect to the circumferential length C of the total composite fiber.
Inventors:
NAKAMICHI SHINYA (JP)
YOSHIGAI TAICHI (JP)
INADA KOJIRO (JP)
YOSHIGAI TAICHI (JP)
INADA KOJIRO (JP)
Application Number:
PCT/JP2023/023193
Publication Date:
January 25, 2024
Filing Date:
June 22, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D01F8/14
Domestic Patent References:
| WO2018110523A1 | 2018-06-21 | |||
| WO1992000408A1 | 1992-01-09 |
Foreign References:
| JP2005273116A | 2005-10-06 | |||
| JP2006507421A | 2006-03-02 | |||
| JP2003293226A | 2003-10-15 | |||
| JP2001123336A | 2001-05-08 | |||
| JP2000212837A | 2000-08-02 | |||
| JPH08269868A | 1996-10-15 |
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