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Title:
CRIMPED YARN HAVING FLAT CROSS-SECTION, METHOD OF MANUFACTURING SAID CRIMPED YARN, AND TEXTILE COMPRISING SAID CRIMPED YARN
Document Type and Number:
WIPO Patent Application WO/2017/221934
Kind Code:
A1
Abstract:
The problem addressed by the present invention is the provision of a crimped yarn having a flat-shaped fiber cross-section and exhibiting a superior crimp rate CC, the provision of a method of manufacturing said crimped yarn at a superior throughput, and the provision of a textile exhibiting superior insulation and coolness even if the density or basis weight is reduced. The problem addressed by the present invention can be solved by: a crimped yarn constituted by a multifilament having a cross-sectional shape with a planarity of 2.0–5.5 and a crimp rate CC of 15–60% in a cross-section perpendicular to the fiber axial direction of the unit fibers; manufacturing a crimped yarn by performing a false twist process, at a false twist coefficient of 16,000–42,000, upon a multifilament having a cross-sectional shape that includes hollow sections in a cross-section perpendicular to the fiber axial direction; and a textile that contains 50–100% by mass of a crimped yarn constituted by a multifilament, has a woven density of 0.40 g/cm3 or less, and has a transmittance of 33% or less for visible light having a wavelength of 400–780 nm, 50–100% by mass of the unit fibers that constitute the multifilament having a flat shape in a cross-section perpendicular to the fiber axial direction, and the planarity of the flat shape being 2.0–5.5.

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Inventors:
IMAKITA, Junya (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
YOKOYAMA, Junichi (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
TAKADA, Yasuo (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
NAKAZAWA, Yusuke (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
YAMAOKA, Tetsuya (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
DOUMAE, Kazuhiro (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
OKABE, Taketoshi (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
Application Number:
JP2017/022714
Publication Date:
December 28, 2017
Filing Date:
June 20, 2017
Export Citation:
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Assignee:
MITSUBISHI CHEMICAL CORPORATION (1-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 51, 〒1008251, JP)
International Classes:
D02G1/02; D03D15/00; D03D15/04; D04B1/16
Domestic Patent References:
WO2011155524A12011-12-15
Foreign References:
JP2000064139A2000-02-29
JPH0770849A1995-03-14
JP2016113714A2016-06-23
Attorney, Agent or Firm:
KOBAYASHI, Hitoshi et al. (Mutsumi Int. Patent Bureau, p.c. Tousen kanda sudacho Bldg.9F, 28, Kanda-sudacho 1-chome, Chiyoda-k, Tokyo 41, 〒1010041, JP)
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