Film drive unit for a packaging machine

Details Film drive unit for a packaging machine Film drive unit for a packaging machine

1988-01-13

1990-03-27

Spruill, Robert L.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

226 95, B65B 906, B65H 2012

Patent

active

049109430

ABSTRACT:
A film drive unit 10 for a packaging machine to move sheet material 16 through the unit 10, the film drive unit 10 includes at least one rotatably driven roller 18 which is hollow and to which a vacuum is delivered to the interior thereof, with the roller 18 having an outer cylindrical member 30 with radially extending passages 39 to which the vacuum is applied to draw the sheet material 16 into contact with the cylindrical outer surface of the roller 18.

REFERENCES:
patent: 2113636 (1938-04-01), Vogt
patent: 4043098 (1977-08-01), Putnam, Jr. et al.
patent: 4067761 (1978-01-01), Shirley
patent: 4118913 (1978-10-01), Putnam, Jr. et al.
patent: 4136505 (1979-01-01), Putnam, Jr. et al.
patent: 4207998 (1980-06-01), Schmid
patent: 4288965 (1981-09-01), James
patent: 4532753 (1985-08-01), Kovacs
patent: 4578931 (1986-04-01), Roovers

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