Ykk Corporation

Toyosaku Ogura

Yoshiharu Yamaguchi

Tsutomu Hamatani

Mutsuo Hirota

Tatsumi Wakai

Kiyomitsu Ishihara

Osamu Maeda

Takeshi Inaba

Disclosed is a recyclable slide fastener having substantially all the component parts thereof made of the same type of synthetic resin material. In the fundamental embodiment of the slide fastener having a pair of fastener tapes and coupling elements fixed to the longitudinal edges of the fastener tapes, they are made of a synthetic resin material of the same type selected from the group consisting of a polyamide resin, a polyester resin, a polyolefin resin, and a vinyl chloride resin. When the slide fastener comprises sewing threads for the fixation of the coupling elements to the fastener tapes and/or core cords extended as inserted through the individual coupling elements, they are made of the same type of synthetic resin as the fastener tapes and the coupling elements. In the slide fastener of the type having upper and lower stop members provided respectively at the upper and lower ends of the rows of coupling elements or the open-link type slide fastener which has a pin-and-box separator and a pair of reinforcing sheet-like members fixed to the lower end portions of the fastener tapes, they are made of the same type of synthetic resin material as the other component parts mentioned above. Preferably the slider is also made of the same type of synthetic resin material as the other component parts mentioned above.

Slide fastener made of synthetic resin

A separable bottom stop assembly of thermoplastic resin comprising a box molded on a lower end of one of opposite slide fastener stringers and an insert pin molded on a lower end of the other fastener stringer. The box has a straight insert-pin receiving hole off to one side. An outer wall of the insert-pin hole has a side slit having at its lower end a stopper. The insert pin is taper toward its lower end and has a straight tape-side edge. A guide ridge is integrally formed with the insert pin with a thin portion between them. When the insert pin is inserted into the insert-pin hole of the box, a lower end of the guide ridge slides along edges of the side slit, guiding insertion of the insert pin to facilitate smooth insertion without exerting load on the insert pin.

Separable bottom stop assembly for slide fastener

A slide fastener having a split arrester for preventing a pair of interengaged fastener stringers S from accidental splitting when a slider is removed. The split arrester comprises interlocking male and female members mounted on a pair of fastener stringers contiguously to the respective terminal portions of opposed coupling element rows and substantially equal in thickness and width of the coupling elements E. The male member has a locking tongue portion projecting from an attachment base portion toward the female member and terminated in a protuberance. The female member has a locking hollow portion, for receiving the locking tongue portion and having a pair of resilient catch portions for gripping the neck of the protuberance from opposite sides in the direction of thickness of the fastener tape.

Slide fastener

Growing community of inventors

Toyama-ken, Japan

Toyosaku Ogura