Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1982-11-18
1984-07-17
Wityshyn, Michael G.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156553, 1565831, 493193, 493194, 493205, B32B 3118, B32B 3120
Patent
active
044604319
ABSTRACT:
Apparatus for forming transverse seam welds or separated seam welds in plastic film webs, preferably for making bags, with a transverse welding device having jaws cyclically opened and closed and between which the film web is intermittently advanced when the jaws are open and is held in position during the welding times, and a rocker lever, which by a cam slot and a slide block imparts to the transverse welding device or to the film web a movement in the same or opposite direction to each other, which movement is derived from a rotating eccentric cam wheel.
REFERENCES:
patent: 3758366 (1973-09-01), Ballestrazzi et al.
patent: 3884129 (1975-05-01), Monahan
patent: 4317697 (1982-03-01), McLean
patent: 4371413 (1983-02-01), Mundus
Eckhardt Walter
Keller Josef
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