Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1995-03-13
1996-07-23
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
1565834, 219243, 100 93P, B30B 1534
Patent
active
055385907
ABSTRACT:
An assembly for heat sealing thermoplastic film, having a first jaw (11) and (optionally) a second jaw (not shown), an electrical impulse heat sealing element (12) mounted on the first jaw (11), electrical terminals (17) connected to the element (12), and at least one electrically and thermally insulating film or tape (14) between the first jaw (11) and the heat sealing element (12). At least one of the jaws is capable of transverse motion and is adapted to collapse a tubular film made from the thermoplastic film and passing between the jaws. The improved heat sealing assembly has a first jaw (11) which has a thermally insulting material (16) embedded therein along a length about equal to the width of the flattened film and having a width at least as great as the width of the sealing element.
REFERENCES:
patent: 2904100 (1959-09-01), Fener
patent: 3409494 (1968-11-01), Korzinck
patent: 3547884 (1970-12-01), Moller
patent: 3948720 (1976-04-01), Reil
patent: 4390384 (1983-01-01), Turner
patent: 4981546 (1991-01-01), Bergevin
patent: 5149943 (1992-10-01), Kupcikevicius et al.
patent: 5158132 (1992-10-01), Guillemot
Dupont Canada Inc.
Sells J.
Simmons David A.
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