Method for thermal molding of filament product

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12264420
APP PUB NO 20210395926A1
SERIAL NO

17279877

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Abstract

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Provided is a thermal molding method for producing a thermally molded article having excellent abrasion resistance at its melt-fused part. Polyamide 6 and a copolyester are prepared separately. The copolyester contains terephthalic acid, ethylene glycol, and 1,4-butanediol as copolymerization units. The copolyester may further contain ε-caprolactone and/or diethylene glycol as a copolymerization unit. A multifilament yarn in which core-sheath type composite filaments each containing a core component and a sheath component at a ratio of 1 to 4:1 by mass are bundled is produced by a composite melt-spinning method using the polyamide 6 as the core component and the copolyester as the sheath component. Using the multifilament yarn, a product of filaments is produced by weaving, knitting, knitting and braiding, or braiding. The product of filaments is heated to melt the copolyester and fuse the core-sheath type composite filaments to each other while retaining the initial filament form of the polyamide 6, thus thermally molding the product of filaments.

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Patent Owner(s)

Patent OwnerAddress
UNITIKA LTD4-1-3 KYUTARO-MACHI CHUO-KU OSAKA-SHI OSAKA 5418566

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Honda, Mariko Uji, JP 7 2
Ikeda, Kohei Uji, JP 31 77
Ikegami, Shohei Okazaki, JP 1 0
Mizuno, Yuta Okazaki, JP 15 34

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