Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1977-04-12
1978-06-13
Klein, David
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
93 33H, 93DIG1, 156583, A41H 3706, B31B 1914
Patent
active
040947297
ABSTRACT:
A method and mechanism for preparing individual reclosable thin plastic bags with rib and groove profiles delivered in unengaged position on the finished bag, whereby said bags are made from a continuous supply of layers of film having critically shaped small rib and groove profiles on facing surfaces thereof interlocked with each other and continuously advancing the layers of film and inserting a fixed separating finger between the rib and groove profiles so as to draw them apart, maintaining the profiles in alignment by grooves which do not press the profiles flat but carefully guide them laterally, guiding the film profile layers toward each other and then immediately pressing the profile layers together with a sealing and cutting means following the finger, so that the profiles are interlocked at the location of sealing only.
REFERENCES:
patent: 2741956 (1956-04-01), Diffenbaugh
patent: 3513755 (1970-05-01), Nestler et al.
patent: 3543379 (1970-12-01), Naito
patent: 3613524 (1971-10-01), Behr et al.
patent: 3779139 (1973-12-01), White
patent: 3810811 (1974-05-01), Bosse
patent: 3839128 (1974-10-01), Arai
patent: 3948705 (1976-04-01), Ausnit
Klein David
Minigrip Inc.
Wityshyn M. G.
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