Method of producing a cup-shaped, sterilizable container
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United States of America Patent
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-
Mar 16, 1993
Grant Date -
N/A
app pub date -
Apr 17, 1991
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing a cup-shaped sterilizable container from a stretch-drawable composite laminate of a total wall thickness between 30 and 200 .mu.m with an aluminum foil of a thickness less than 40 .mu.m, a sealable plastic inner layer of high extensibility and a plastic outer layer of high extensibility and load-bearing capacity, the side wall of the container running at a side wall angle (a) with respect to the direction perpendicular to the container bottom, is distinguished in that the composite laminate is deep drawn free from folds at a side wall angle of 30.degree. using smooth-walled forming tools then combined deep/stretch drawn and subsequently stretch drawn.
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