Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1994-12-05
1997-02-18
Engel, James
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156251, 1565835, 533735, 533895, 493194, B32B 3100
Patent
active
056038011
ABSTRACT:
An infinite heat sealing assembly preferably for heat sealing a thermoplastic heat-shrinkable plastic film, has a heat sealing assembly for cutting and sealing a seam in a film or layers of film without regard to the length of the seam. The heat sealing assembly includes a heated blade and a plurality of belt conveyors for conveying the film with a desired tracking through the assembly. An adjustable angle blade and slotted film support ramp result in improved sealing of heavier gauge films by increasing the dwell time of the film on the heated blade.
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