Apparatus for the application of polymer films on a support

Details Apparatus for the application of polymer films on a support Apparatus for the application of polymer films on a support

1976-12-22

1978-09-26

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With work feeding or handling means

156583, 219469, 242 754, 339 5L, B31F 500, B30B 1534, B21B 2706

Patent

active

041167490

ABSTRACT:
In the apparatus for applying a polymer film to a support as the film and support pass between a heating roller and a pressure roller the heating roller is provided with a freely movable electrical contact comprised of a disk extending into a pool of mercury at one end of the heating roller to accommodate longitudinal heat expansion of the roller to prevent radial variations in the heating element with consequent variations in heating patterns. The supply reel for the polymer film is provided with a spring bias friction brake having a readily disconnectable coupling with the supply reel to facilitate reel changing.

REFERENCES:
patent: 1669653 (1928-05-01), Campbell
patent: 2232966 (1941-02-01), Peterson
patent: 2277134 (1942-03-01), Nelson
patent: 3257939 (1966-06-01), McDermott
patent: 3737359 (1973-06-01), Levitan

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