Plastic bag and method and apparatus of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 24, 1990
Issued Date -
N/A
app pub date -
Jun 12, 1987
filing date -
Nov 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a bag including a front wall and a rear wall and having an open mouth portion in which the front wall and rear wall are joined by pleated portions or gussets. The bag is manufactured so that a longitudinal, thermally welded seam is placed inside a portion of at least one of the gussets at a point other than the central fold. The bag preferably includes handles which are integral extensions of the front and rear walls and the gussets. The bag manufactured according to the principles of the present invention thus eliminates or minimizes failure of thermally welded seams. Also disclosed is a method for manufacturing the bags and an apparatus for manufacturing the bags.
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Family
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Cited Art Landscape
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