Package making – With means responsive to a sensed condition
Patent
1982-04-15
1984-09-25
Coan, James F.
Package making
With means responsive to a sensed condition
53509, B65B 1152, B65B 5700
Patent
active
044729219
ABSTRACT:
A control arrangement for terminating the film-heating segment of a sequence of operations for a skin packaging machine. A skin packaging machine having a film supply, a film-bearing frame, an oven for heating the film in the frame, a base having a perforated surface with means for drawing a vacuum at the surface, and means for moving the frame from a position adjacent the oven to a position adjacent the perforated surface of the base further includes a control arrangement for terminating the heating of the film in the frame by the oven substantially responsive to the temperature of the film. The control arrangement includes a temperature sensor positioned adjacent the film in the frame when the frame is adjacent the oven. The temperature sensor cooperates with a temperature comparison circuit in the control arrangement to provide a comparison between the sensor temperature and a reference temperature to produce a comparison signal. The control arrangement is responsive to the comparison signal to terminate the heating of the film in the frame by the oven. The temperature sensor is mounted at the end of a conduit through which pressurized air is supplied at a set rate for cooling the temperature sensor when the oven is not heating the film.
REFERENCES:
patent: 4354095 (1982-10-01), De Vries
patent: 4413172 (1983-11-01), Jones
patent: 4417432 (1983-11-01), Lee
patent: 4418511 (1983-12-01), Collin
Coan James F.
Nordson Corporation
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