Film folding device

Details Film folding device Film folding device

1987-09-25

1989-01-10

Sipos, John

Package making

Wrapping machines

Cover-wiping passage or pocket for initial wrap

53556, 53226, B65B 1118

Patent

active

047964057

ABSTRACT:
Disclosed herein is a machine for wrapping filled trays in thermoplastic film, said machine having a film folding device in which the side folding arms and back folding bar move along linear paths in synchronized motion so that the points of coincidence between the back folding bar and the side folding arms define a curve which approximates a diagonal to the tray being wrapped. This film folding device provides uniquely smooth folds on the bottom of a tray which can be readily heat sealed to produce a relatively leakproof package.

REFERENCES:
patent: 4178740 (1979-12-01), Grom
patent: 4574564 (1986-03-01), Pester
patent: 4631903 (1986-12-01), Takamura
patent: 4730441 (1988-03-01), Terminella

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