Multilayered container and method for making
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United States of America Patent
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Jul 10, 1990
Issued Date -
N/A
app pub date -
May 12, 1988
filing date -
Nov 15, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Anti-gas permeation property and impact strength of a container such as a bottle which is made of polyethylene terephthalate resin by biaxially orienting blow molding are improved by using a multilayered structure of the polyethylene terephthalate and the other polyester of a dicarboxylic acid component containing a specific amount of isophthalic acid and a glycol component. The container is made preferably by preparing a preform which is a laminate of the polyethylene terephthalate and the other polyester in the molten state under pressure, and by biaxially orienting blow molding the preform.
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