Apparatus for manufacturing slide fastener chains having solid s

Details Apparatus for manufacturing slide fastener chains having solid s Apparatus for manufacturing slide fastener chains having solid s

1981-08-13

1982-12-07

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to apply stress to preform and uniting in stressed...

425121, 425122, 425126R, 425129R, 264273, B29D 500, B29F 100

Patent

active

043624871

ABSTRACT:
An apparatus for manufacturing a fastener chain having solid sections by repeating the steps of providing a tape having perforated sections which include holes punched in a longitudinal edge of the tape, and solid sections, which are free of holes, alternating with the perforated sections, supplying the tape so that the perforated section thereof is placed between a stationary mold and movable mold, applying tension to the tape to stretch it, and then injection-molding fastener elements onto the tape at the holes. Stretching of the tape is accomplished by a sprocket wheel provided adjacent a freely rotatable drum. Teeth on the circumferential surface of the sprocket wheel are caused to recede below the circumferential surface of the freely rotatable drum when a solid section of the tape passes over the drum.

REFERENCES:
patent: 3672805 (1972-06-01), Porepp
patent: 3849042 (1974-11-01), Anderegg
patent: 3897192 (1975-07-01), Heimberger et al.
patent: 4226577 (1980-10-01), Sawada
patent: 4251912 (1981-02-01), Yoshida
patent: 4257839 (1981-03-01), Yoshida et al.
patent: 4304748 (1981-12-01), Takahashi

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