公开(公告)号：US20210267320A1

公开(公告)日：2021-09-02

申请号：US17257883

申请日：2018-07-09

Applicant: YKK Corporation

Inventor： Hiroyuki Yamashita ,  Yoshiyuki Fukuhara ,  Ryosuke Tanimoto ,  Makoto Takekawa ,  Shoichi Yokoyama

IPC: A44B18/00

Abstract: In a molded surface fastener in which an engaging element includes at least two engaging pawl portions protruded outward, a plurality of the engaging elements is disposed in a line along a machine direction to form an element row, a plurality of the element rows is arranged side by side in a cross direction, each of the engaging elements has, as the engaging pawl portions, at least a pair of symmetrical engaging pawl portions which are disposed each other at symmetrical positions in the cross direction and are respectively protruded in the cross direction sides, and a plurality of the engaging elements is arranged in a staggered pattern. Thereby, the molded surface fastener can appropriately and stably exert desired performance such as peel strength with respect to more types of non-woven fabrics.

公开(公告)号：US11533971B2

公开(公告)日：2022-12-27

申请号：US17257883

申请日：2018-07-09

Applicant: YKK Corporation

Inventor： Hiroyuki Yamashita ,  Yoshiyuki Fukuhara ,  Ryosuke Tanimoto ,  Makoto Takekawa ,  Shoichi Yokoyama

IPC: A44B18/00

Abstract: In a molded surface fastener in which an engaging element includes at least two engaging pawl portions protruded outward, a plurality of the engaging elements is disposed in a line along a machine direction to form an element row, a plurality of the element rows is arranged side by side in a cross direction, each of the engaging elements has, as the engaging pawl portions, at least a pair of symmetrical engaging pawl portions which are disposed each other at symmetrical positions in the cross direction and are respectively protruded in the cross direction sides, and a plurality of the engaging elements is arranged in a staggered pattern. Thereby, the molded surface fastener can appropriately and stably exert desired performance such as peel strength with respect to more types of non-woven fabrics.

公开(公告)号：US20250009076A1

公开(公告)日：2025-01-09

申请号：US18706094

申请日：2021-11-25

Applicant: YKK Corporation

Inventor： Shoichi Yokoyama ,  Shingo Kawano ,  Kento Mitsuhashi ,  Masayuki Naohara

IPC: A44B18/00

Abstract: A method of manufacturing a surface fastener includes a molding step of molding a pre-fastener body and a stretching step of obtaining the surface fastener by stretching the pre-fastener body in a machine direction by a stretching device, the stretching device including at least a first heating roller, a second heating roller, and a stretching roller, the stretching roller being configured to rotate at a faster rotational speed than the second heating roller. The stretching step includes heating the tentative base portion of the pre-fastener body with the first heating roller; heating engagement elements of the pre-fastener body with the second heating roller; and setting a heating temperature of the second heating roller to be lower than a heating temperature of the first heating roller. Consequently, the surface fastener can be manufactured while lowering of the engagement elements and thinning of the base portion are suppressed or prevented.