Apparatus for preventing creases in transverse sealing

Details Apparatus for preventing creases in transverse sealing Apparatus for preventing creases in transverse sealing

1984-09-12

1986-05-20

Culver, Horace M.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

53551, B65B 908, B65B 6100

Patent

active

045892474

ABSTRACT:
The invention provides an apparatus for transversely stretching a film tube at a portion to be transversely sealed and preventing creases from occurring in the transversely sealed portion of the film tube when a product fed in the film tube is separated by a squeeze roll means into a specified amount for one pack and thereafter the film tube is transversely sealed. Butterfly arms which pivotally spread apart in a fan-like manner are used for the stretching means.

REFERENCES:
patent: 2956383 (1960-10-01), Gausman
patent: 2966832 (1961-01-01), Vergobbi
patent: 3041941 (1962-07-01), Danielzig
patent: 3045404 (1962-07-01), Wilson
patent: 4103473 (1978-08-01), Bast et al.

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