Zippered film feed
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United States of America Patent
Stats
-
Jun 20, 1989
Grant Date -
N/A
app pub date -
Dec 10, 1987
filing date -
Dec 10, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and mechanism for advancing a continuous length of bag making plastic film having a reclosable fastener strip extending therealong with a filling tube over which the film is formed, means for sealing the edges of the film over the filling tube, opposed pairs of advancing belts for pressing the film against the tube and driving it incrementally downwardly, means for guiding the fastener between the belts of one of the pairs and means for driving the belts incrementally to move the film downwardly as it is filled and cross-sealed.
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Cited Art Landscape
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