Yoshida Kogyo K.k.

Akira Nogai

Takeshi Imai

Tomiyoshi Takano

Hiroshi Murabayashi

Mamoru Okada

A slide fastener is disclosed which comprises a pair of stringer tapes each having molded thereon a row of coupling elements. The elements is formed from a thermoplastic resin composition containing 0.01-10 weight % of an organopolysiloxane. The resin composition facilitates separation of the stringers from the mold and movement of a slider on the fastener.

Slide fastener and method of making the same

An apparatus for manufacturing a continuous slide fastener stringer including a row of injection-molded coupling elements secured to a stringer tape along a longitudinal edge thereof, includes a pair of fixed and movable mold members through which the stringer tape is fed by a tape advancing means, and a pair of upper and lower tape shifters mounted on the movable mold member for moving the stringer tape between a first position in which a part or portion of the stringer tape lies flatwise on a mold surface of the movable mold member and a second position in which the tape's part is spaced from the mold surface and held out of interference with a feeler projecting from the mold surface of the movable mold member. During the advancing movement of the movable mold member toward the fixed mold and in timed relation to the stringer-tape advancing means, the tape shifters are movable with respect to the movable mold member to place the tape's part in the first position.

Apparatus for manufacturing a continuous slide fastener stringer

An injection molding machine has a round support member rotatably mounted on a shaft, there being at least a series of molds supported on and along the periphery of the table. Each of the molds includes a pair of relatively pivotable mold members, one of which is operatively connected to a power actuator which includes a fluid-pressurizable cylinder fixed to the support member and a piston having a rod projecting from the cylinder for actuating said one of the pair of mold members.

Growing community of inventors

Kurobe, Japan

Akira Nogai