Container lid having an opening device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 6, 1985
Grant Date -
N/A
app pub date -
Sep 21, 1983
filing date -
Sep 23, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lid for a packaging container which include a tear-open part which is surrounded by a weakened line. The lid is molded of a composite material, which has an outer carrier layer of plastic, a middle barrier layer of metal foil and an inner heat-sealing layer of a thermoplastic synthetic material. The weakened line is produced as an indentation in the outer carrier layer by being heat-impressed using a heated tool.
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Cited Art Landscape
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