Zippered closure for thermoformed package
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United States of America Patent
Stats
-
Nov 5, 1991
Issued Date -
N/A
app pub date -
Apr 27, 1990
filing date -
Mar 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plastic film bag for foodstuffs or the like having opposed film bag walls joined at their edges and forming a mouth between the walls and at one side reclosable fastener strips between the walls at the bag mouth having facing releasably interlocking profiles thereon with a sealing strip extending from one profile to the wall of the other profile with the sealing strip being sufficiently broad to avoid stress thereon and preferably with the sealing strip having a frangible fracture line extending substantially parallel to the profile to be torn when the profiles are first separated with the fracture line formed in various ways including perforations, or a score line, or an insert in the sealing web defining the frangible fracture line or the web being formed of multiple parts joined by a portion that fracture more easy than the sealing web.
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Family
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Cited Art Landscape
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