Ykk Corporation

Nippon Steel Chemical Co., Ltd.

Hisanori Kato

Tomoko Taguchi

Keiichi Keyaki

Yasutaka Nishida

Kenji Hasegawa

Takeshi Harada

Hiroshi Aida

Toru Yabuya

Yuki Asano

Hiroki Fukushima

Nobutoshi Iwata

Shoichi Hamada

Provided is a slider having appearance or texture which cannot be obtained with a slider body made of metal or synthetic resin in the related art and further having properties superior than those of sliders in the related art. A slider of an embodiment of the invention includes a slider body formed by sintered bodies containing zirconium oxide as a main component and a tab held by a tab attaching portion of the slider body.

Slider for slide fastener

A female snap is provided with: a first member for at least partially establishing an opening into which a post is inserted; and a second member which is able to restrict expansion of the opening in order to either increase the force needed for engagement/disengagement, or prohibit engagement/disengagement, of the post with respect to the female snap. The extent of expansion of the opening that is permitted by the second member varies depending on the relative positions of a contracting part of the second member and a contacted part of the first member in a peripheral direction going around the direction of insertion of the post into the opening.

Female snap button and snap button

Adjustment strap

An expansion injection molding die having a plate forming the die cavity, a backup plate, a core plate, ejector pins inserted through the backup plate and the core plate for separating the molded products from the die cavity, and a gas introducing passage communicating with the pressurized gas source for introducing gas into the die cavity. The plate that has holes through which the ejector pins are injected are formed with hollow portions. In each of the hollow portions, a guide ring is installed so that it is freely movable at least two-dimensionally. A sealing member is installed in an expanded hole portion in the guide ring so that it is in sliding contact with the ejector pin.

Expansion injection molding die

Styrene polymer and copolymer compositions containing both glycerin fatty acid monoester-alkylene oxide adducts and glycerin fatty acid monoesters as antistatic agents produce prolonged antistatic effects unaffected by water washing, showing a resistivity of 10.sup.9 -10.sup.10 .OMEGA., without losing the transparency and mechanical strengths inherent in styrene polymers and copolymers.

Polystyrene compositions

Growing community of inventors

Tokyo, Japan

Hisanori Kato