Feeding mechanism of bag manufacturing machine

Details Feeding mechanism of bag manufacturing machine Feeding mechanism of bag manufacturing machine

1979-06-29

1981-05-19

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493203, 493205, 493239, 1565835, B31B 116, B31B 164

Patent

active

042682606

ABSTRACT:
The present invention relates to a feeding mechanism for a bag manufacturing machine, in which a continuously fed film strip which has been folded double is cut to predetermined lengths to manufacture bags. The feeding mechanism includes a bar for forming film loops which is projectively provided on a number of transfer bodies which move in a circulation path, and is adapted to transfer the film in a looped state by the circulation of the transfer bodies and clamp the film before heat-sealing and cutting steps, thereby to precisely control film dimension.

REFERENCES:
patent: 2720246 (1955-10-01), Piazze
patent: 3147168 (1964-09-01), Bateman
patent: 3418193 (1968-12-01), Hallowell, Jr.
patent: 3867873 (1975-02-01), Simpson et al.
patent: 3954371 (1976-05-01), Hutt et al.

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