Apparatus for severing wrapping film

Details Apparatus for severing wrapping film Apparatus for severing wrapping film

1986-05-01

1987-12-15

Schran, Donald R.

Cutting

With means to control or modify temperature of apparatus or...

Of tool

83 16, 83600, 83175, 53390, 53 66, B65H 5902, B26D 710

Patent

active

047124598

ABSTRACT:
A wrapping film severing apparatus is disclosed for use in severing sheets of film from a roll of plastic film. The roll of film is supported so that it may rotate about its axis of rotation while film is being withdrawn from the roll. A braking force is applied to the roll so that the film is under tension as it is being withdrawn from the roll. An electrically heated cutoff element is located forwardly of the roll for use in severing a sheet of film from the roll as a length of film is withdrawn under tension from the roll and then brought into contact with the cutoff element. The film is threaded through a pair of pinch rollers extending transversely of the film path and located intermediate the film roll and the cutoff element for guiding movement of the film from the roll to the cutoff element. A one-way clutch is associated with at least one of the rollers permitting forward movement of the film toward the cutoff element while restricting backward movement toward the film roll.

REFERENCES:
patent: 1437843 (1922-12-01), Heinrichs
patent: 2569108 (1951-09-01), Koch
patent: 4014229 (1977-03-01), Lynch
patent: 4501106 (1985-02-01), Treiber et al.

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