Ykk Corporation

Chikako Hiromi

Atsushi Ogihara

Shigeru Tsuchida

Takahiro Fukuyama

Kouta Kido

Takanori Kumei

Yoshio Taira

Ryota Ara

Sohei Nagasawa

Muneyoshi Yokota

Yuki Urita

Misako Hosaka

Mitsuomi Katori

Futoshi Kozato

Yasuharu Yoshimura

Takuya Koizumi

Itaru Hasegawa

Kazuya Akitsu

Kousuke Seki

An aluminum alloy fastening member has a novel chemical includes conversion coating as a colored coating, a fastener chain. A method producing the aluminum alloy fastening member. The aluminum alloy fastening member includes a chemical conversion coating containing manganese as a component element, and the chemical conversion coating satisfies hue ranges of −3≤a*≤12, −5≤b*≤35, and 45≤L*≤80 in a CIELAB color space as defined by JIS Z 8781-4 (2013).

Aluminum alloy fastening member, fastener chain and method for producing aluminum alloy fastening member

Legs of a pair of legs are provided with core-thread-pressing surfaces that slant gradually to approach one another as being away from the stopping surfaces. Each core-thread-pressing surface extends from the stopping surface to the base end of the leg. A thickness of each leg in a thickness direction of the fastener tape gradually increases from the free end toward the base end of the leg in accordance with at least the slanting of the core-thread-pressing surface.

Metallic element and slide fastener

Provided is an aluminum alloy fastening member including a chemical conversion coating having a novel composition as a colored coating, and a method for producing the aluminum alloy fastening member. The aluminum alloy fastening member includes a chemical conversion coating containing tellurium as a component element.

Aluminum alloy fastening member and method for producing aluminum alloy fastening member

An element includes a head having an engaging convex portion protruding from one surface thereof and an engaging concave portion formed on the back of the engaging convex portion on the other surface; and a pair of leg portions extending from the head. A protrusion is formed on a side of the engaging concave portion close to the leg portions to protrude inward of the engaging concave portion.

Element and slide fastener

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 metallic fastener member has a specific color of light gold and also has high strength, discoloration resistance and high workability to withstand practical use. A metallic fastener member including a base material of a copper alloy having composition containing 1 to 30% by mass of Zn and 1 to 11% by mass of Ni, the balance being Cu and inevitable impurities, wherein the metallic fastener member has a Vickers hardness of Hv 120 or more and less than Hv 220.

Metallic fastener member having light gold color, and fastener provided therewith

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Kurobe, Japan

Chikako Hiromi