B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 45/12 (2006.01) B65H 45/00 (2006.01) B65H 45/16 (2006.01)
Patent
CA 2014155
Disclosed is an apparatus for introducing a gusset into a web of plastic film. the apparatus includes a pneumatically-biased protruding plate which varies the depth of the gusset to maintain a constant protruding plate-Film web tension in response to variations in the transverse width of the film web. Further disclosed is a means for holding the zipper laterally stationary and in alignment while the gusset is introduced into the film web by the same apparatus.
Barker David A.
Nestle Robert J.
S. C. Johnson Home Storage Inc.
Smart & Biggar
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