METHOD FOR MANUFACTURING HOOK-AND-LOOP FASTENER, HOOK-AND-LOOP FASTENER, AND MOLDING DEVICE

WIPO Patent Application WO/2023/228329

A1

This method for manufacturing a hook-and-loop fastener includes at least: a molding step in which a synthetic resin is supplied to a die wheel (11) and molding is performed; and an elongation step in which elongation processing is applied after the molding step. The molding step includes using a die wheel (11) that comprises sleeves (12, 13) in which cavities are provided. The sleeves (12, 13) each have a cylindrical shape formed by mutually aligning a one-end section and an another-end section, in a first direction, of a metal thin-plate member (18) and joining the aligned one-end section and another-end section by welding. A welding section (12b, 13b) formed by the joining of the one-end section and the another-end section is inclined at an angle (θ) of at least 4° with respect to a second direction. Accordingly, it is possible to manufacture a hook-and-loop fastener (70) that, even if an elongation step is performed, does not have a conspicuous transfer contour section (56) and is not prone to variation in peel strength.

WO/2000/059326	TOUCH FASTENERS HAVING PORTIONS WITH DIFFERENT PROPERTIES AND METHODS OF MAKING SAME
WO/1986/003164	METHOD AND APPARATUS FOR ADAPTING SEPARABLE FASTENERS FOR ATTACHMENT TO OTHER OBJECTS

MICHIHATA ISAMU (JP)
KURIYAMA WATARU (JP)
MIYAWAKI YUI (JP)
YOKOYAMA SHOICHI (JP)
MITSUHASHI KENTO (JP)
MATSUDA KIYONORI (JP)
KAKIUCHI MIHO (JP)

PCT/JP2022/021428

November 30, 2023

May 25, 2022

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YKK CORP (JP)
DYMCO LTD (JP)

A44B18/00

WO2017110127A1	2017-06-29
WO2015045077A1	2015-04-02
WO2017109902A1	2017-06-29

JP2020162940A	2020-10-08
JPH0775602A	1995-03-20
JP2006240096A	2006-09-14
JP2007502229A	2007-02-08

HAYASHI, Tsukasa et al. (JP)

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