Thermal cut-off device for packaging machine

Details Thermal cut-off device for packaging machine Thermal cut-off device for packaging machine

1985-01-31

1986-07-15

Sipos, John

Package making

Aids to manual packing

53219, 219221, 219243, B65B 6708

Patent

active

045998477

ABSTRACT:
In wrapping machinery for wrapping articles in heat sealable plastic film, a web of film is drawn from a supply roll and is severed by pulling the film under tension downwardly onto the narrow edge of a thermal cut-off device, which may be a heated rod or blade, to melt the film material along a thin transverse line and to permit severance thereof by pulling. Following severance of the film, the film-wrapped package is sealed by placing the package on a pedestal hot plate. The temperature of the hot plate is higher than that of the thermal cut-off device used to sever the film. The hot plate is supplied by electrical energy from a single source through a temperature sensor and control. The thermal cut-off device obtains its heat by conduction from the hot plate.

REFERENCES:
patent: 2395241 (1946-02-01), Allen
patent: 2769387 (1956-11-01), Penick
patent: 3724167 (1973-04-01), Pizmont
patent: 3800499 (1974-04-01), Feldman
patent: 4017713 (1977-04-01), Lodi

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