Package making – Methods – Applying a partial cover
Patent
1984-10-26
1986-10-28
Sipos, John
Package making
Methods
Applying a partial cover
53441, 53556, 53587, B65B 1302
Patent
active
046191020
ABSTRACT:
A method and apparatus for sealing a film wrapping. A charge or load wherein an anvil is first brought into contact with the charge and then the wrapping operation commences. After the film is wrapped sufficiently to hold itself to the charge, a clamp holding the end of the film is released and is then moved to a retracted position where it stays until the wrapping is almost completed. When a first lap of film has been wrapped over the anvil, a jaw of the clamp is moved into position adjacent the anvil and a second lap of film is wound over the anvil and jaw. Next the heat sealer is operated to cooperate with the anvil and seal the two laps together and a second jaw of the clamp is moved to operative position to clamp the second or last lap of film which is then cut between the clamp and the heat seal so formed.
REFERENCES:
patent: 3003297 (1961-10-01), Broadhead et al.
patent: 4216640 (1980-08-01), Kaufman
patent: 4235062 (1980-11-01), Lancaster et al.
patent: 4300326 (1981-11-01), Stackhouse
patent: 4432185 (1984-02-01), Geisinger
Muller Manufacturing Ltd
Rowley C. A.
Sipos John
Studebaker Donald R.
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