Ykk Corporation

Yoshio Taira

Atsushi Ogihara

Takahiro Fukuyama

Kouta Kido

Chikako Hiromi

Takanori Kumei

Muneyoshi Yokota

Yasuharu Yoshimura

Takuya Koizumi

Jun Kiyohara

Kouichi Mikado

Ryo Maseguchi

Yoshie Nakamae

Hikaru Sato

A slide fastener includes a pair of left and right fastener tapes; and a pair of element rows including a plurality of fastener elements that face edge portions of the fastener tapes on sides facing each other along a length direction of the fastener tapes, and to which a slider that engages with the pair of element rows is slidably attached. The fastener element is made of a metal, a water-repellent layer made of a water-repellent agent is provided on the fastener tape, and adhesion of water to the fastener tape is prevented by the water-repellent layer.

Slide fastener, production method for same, and sewn slide fastener article

Provided is a copper alloy fastener element which improves season cracking resistance by a means different from that of increasing a ratio of a &#x3b2; phase. The copper alloy fastener element includes a copper-zinc alloy as a base material, the base material having: an apparent zinc content of from 34 to 38%; a dendrite structure; and a &#x3b2; phase at a ratio of 10% or less.

Copper alloy fastener element and slide fastener

A copper alloy for fastening wherein the alloy has a structure of a mixture of &#x3b1;-phase and a &#x3b2;-phase; and wherein the alloy has a composition represented by the general formula: CuZnMn, where bal., a, and b are expressed in % by mass, bal. represents the balance, 34&#x2264;a&#x2264;40.5, 0.1&#x2264;b&#x2264;6, and inevitable impurities may be contained; and the composition satisfying the equation (1): b&#x2265;(&#x2212;8a+300)/7, where 34&#x2264;a&#x3c;37.5 and equation (2): b&#x2264;(&#x2212;5.5a+225.25)/5, where 35.5&#x2264;a&#x2264;40.5.

Fastening copper alloy

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Kurobe, Japan

Yoshio Taira