Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Patent
1988-07-22
1989-06-20
Culver, Horace M.
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
53550, 53552, 156494, 156496, 156498, 156582, 1565833, B65B 5126, B65B 5130, B65B 5116
Patent
active
048400092
ABSTRACT:
A rotary film sealing and severing device for use with thermoplastic film for forming packages. The device includes a rotating anvil assembly and a counter-rotating film cutting assembly having a heated sealing and cutting knife. First and second liquid cooled clamping bars on either side of the knife hold the layers of film together while the film is being sealed and cut. Cooling the clamping bars prevents the film from adhering to the clamps and causes the layers of film to quickly fuse together and allows high speed operation by preventing separation of layers of film due to slow cooling.
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Pamperin John M.
Rentmeester Alan L.
Culver Horace M.
FMC Corporation
Guernsey Lloyd B.
Kamp R. C.
Megley R. B.
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