B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
26/3
B29D 5/00 (2006.01) A44B 19/42 (2006.01) B29C 45/14 (2006.01) B29D 5/02 (2006.01)
Patent
CA 1173636
APPARATUS FOR MANUFACTURING SLIDE FASTENER CHAINS HAVING SOLID SECTIONS Abstract of the Disclosure 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 circum- ferential surface of the freely rotatable drum when a solid section of the tape passes over the drum.
383519
Takahashi Kihei
Gowling Lafleur Henderson Llp
Yoshida Kogyo K.k.
LandOfFree
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