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Title:
WATER-REPELLENT WOVEN ARTICLE, PRODUCTION METHOD FOR SAME, AND GARMENT
Document Type and Number:
WIPO Patent Application WO/2020/158530
Kind Code:
A1
Abstract:
The present invention overcomes the problems of the prior art and provides a water-repellent woven article that repels water and has excellent abrasion resistance and durability. This water-repellent woven article is a woven article on which a water repellency treatment has been performed using a water repellent that has a perfluorooctanoic acid (PFOA) concentration of no more than 5 ng/g. The water-repellent woven article includes, as constituent fibers, fibers that have cross-sections that have, at the outer circumference thereof, a plurality of grooves that have a wide part. The size of the grooves in the fibers satisfies formula (1) and formula (2) (in which w1 is the width of the entrance of the groove, w2 is the width of the wide part of the groove, h is the depth of the groove, and d is the diameter of the fiber). After washing 20 times in accordance with JIS L 0217 103, the droplet contact angle between water and the woven article is at least 135°, and the water repellency of the woven article as measured by the spray technique in JIS L 1092 is at least a grade 4. (1) w2/w1≥1.3. (2) 0.15≤h/d≤0.25.

Inventors:
TOYABE KEIGO (JP)
FUJITA KAZUYA (JP)
Application Number:
PCT/JP2020/002063
Publication Date:
August 06, 2020
Filing Date:
January 22, 2020
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D06M15/643; A41D31/00; A41D31/04; A41D31/24; D01F8/04; D03D15/00; D04B1/16; D04B21/00; D06M11/00; D06M13/02
Foreign References:
JP2018197403A2018-12-13
JP2010138510A2010-06-24
JP2000178834A2000-06-27
JP2005350828A2005-12-22
JPH06235167A1994-08-23
JP2015221952A2015-12-10
JP2005350828A2005-12-22
Other References:
"Textiles-Care labelling code using symbols", JIS L 0217, 1995
"Testing methods for pilling of woven fabrics and knitted fabrics", JIS L 1076, 2012
See also references of EP 3919673A4
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