Heater for severing plastic film

Details Heater for severing plastic film Heater for severing plastic film

1976-03-25

1977-04-12

Albritton, C. L.

Electric heating

Heating devices

Combined with pressure application means

53 33, 93DIG1, 219546, 338243, H05B 100

Patent

active

040177130

ABSTRACT:
A temperature controlled electric heater for severing a web of vinyl film which includes a plastic coated metallic sheath having internal heater elements arranged in a ceramic core and a thermal resistance element nested in the core and in surface contact with the sheath for sensing the temperature of the heater; and means for securing the heater rigid and aligned with a web of vinyl film, said web being held under tension, and the heater being adapted to heat sever the film on contact with the web when the web is drawn over the heater.

REFERENCES:
patent: 3005402 (1961-10-01), Starger et al.
patent: 3113198 (1963-12-01), Shinn
patent: 3916148 (1975-10-01), LaFleur

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