Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1974-11-18
1976-09-14
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
83324, 93 8R, 93 33H, 93DIG1, 156583, B31B 2114, B31B 2160
Patent
active
039805166
ABSTRACT:
The disclosure relates to a side weld plastic bag manufacturing machine. The machine having a pair of drive rollers adapted to drive folded plastic toward a heat seal roller and a heat seal bar which is continuously rotated to engage the folded plastic and to seal at spaced positions. Means is provided to operate the heat seal bar and the heat seal roller at a rate common to that of the drive rollers, and further means is provided for quickly rotationally advancing the heat seal bar and the seal roller at a higher rotational rate than the drive rollers to separate the plastic at its welded portion from the surface of the heat seal roller while held between the drive rollers. The mechanism used to accomplish the common rate driving and the higher rate driving of the seal roller and heat seal bar comprising an overrunning clutch and lost motion mechanism coupled to the sealer roller and an arm coupled to the heat seal bar adapted to operate the overrunning clutch to coordinate and advance the sealing roller at a higher rate when the heat seal bar is operated at a higher rate by intermittently operable clutch means and a variable ratio gear train mechanism.
REFERENCES:
patent: 2933023 (1960-04-01), Weber
patent: 3451870 (1969-06-01), Pearson
patent: 3743562 (1973-07-01), Phipps
patent: 3755041 (1973-08-01), Membrino
patent: 3793927 (1974-02-01), Emond
Powell William A.
Wityshyn M. G.
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