Method for the molecular orientation of plastic material
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United States of America Patent
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-
Sep 5, 1989
Issued Date -
N/A
app pub date -
Nov 10, 1983
filing date -
Mar 13, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the molecular orientation of plastic material by expanding a tube of plastic material, includes introducing the tube into a container filled with heated liquid, preferably water of a temperature of 70.degree.-100.degree. C. The tube is expanded by introducing a pressurized liquid into the tube. An apparatus for carrying out the method and a plastic material are also disclosed.
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