Plastic film sealer

Details Plastic film sealer Plastic film sealer

1972-11-10

1976-06-08

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53 39, 53285, 93DIG1, 156323, 156583, 219243, C09J 500, B32B 3120, B30B 1534

Patent

active

039620174

ABSTRACT:
A plastic film sealer has a thermostatically controlled heated bar which can move inwardly and outwardly through an opening in the sealer housing. A high temperature plastic film is attached across the opening and interposed between the heated bar and the layers of heat sealable plastic film being heat sealed. The movement of the heated bar and of the high temperature plastic film is limited substantially to perpendicular movement relative to the plane of the heat sealable plastic film layers.

REFERENCES:
patent: 2556008 (1951-06-01), Spalding
patent: 2638964 (1953-05-01), Andina
patent: 2842910 (1958-07-01), Reed
patent: 2904100 (1959-09-01), Fener
patent: 2936816 (1960-05-01), Lang
patent: 3059690 (1962-10-01), Nyborg
patent: 3106630 (1963-10-01), Klamp
patent: 3115731 (1963-12-01), Blythe et al.
patent: 3593000 (1971-07-01), Forma
patent: 3657055 (1972-04-01), Nichols
"Polyimide Film," Modern Plastics Encyclopedia, vol. 46, No. 10A (Oct. 1969), p. 371.

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