Film supply monitor for film wrapping machine

Details Film supply monitor for film wrapping machine Film supply monitor for film wrapping machine

1982-04-26

1985-02-26

Coan, James F.

Package making

With means responsive to a sensed condition

Of receptacle or cover feed or adjunct feed or application

53 77, 53556, B65B 5902

Patent

active

045011052

ABSTRACT:
In a film wrapping machine for wrapping packages in stretchable film, a monitoring system is provided to generate a signal each time film is drawn into the machine. If no film is drawn into the machine indicating that the film source has expired, broken or otherwise become disengaged from the film feeding apparatus for the wrapping machine, the machine is stopped. The film draw into the machine is monitored by an electrical switch which is coupled to a tensioning roller, the motion of which is adjusted to activate the switch each time even at least a minimum length of film is drawn into the machine.

REFERENCES:
patent: 3029571 (1962-04-01), Douthit
patent: 3662513 (1972-05-01), Fabbri
patent: 3967433 (1976-07-01), Bonfiglioli
patent: 4075815 (1978-02-01), Carver, Jr. et al.
patent: 4134246 (1979-01-01), Michels
patent: 4178740 (1979-12-01), Groom et al.
patent: 4180962 (1980-01-01), Michels
patent: 4205501 (1980-06-01), Michels
Brochure entitled "Weldotron Automac Stretch Packaging System".

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