Process for preparing thermoplastic polyolefin resin articles of reduced hydrocarbon permeability
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United States of America Patent
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Dec 30, 1997
Grant Date -
N/A
app pub date -
Apr 22, 1996
filing date -
Apr 22, 1996
priority date (Note) -
Expired
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Abstract
A process is described for improving the hydrocarbon solvent impermeability of polyethylene resin based containers. The process employs a thermal profile during thermal molding, which creates a crystalline barrier adjacent one surface of the container. The barrier enhances impermeability of the container.
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