Container with high-crystallinity sidewall and low-crystallinity base
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United States of America Patent
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Nov 4, 2008
Grant Date -
Dec 8, 2005
app pub date -
Aug 8, 2005
filing date -
Jul 7, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A polyester container having an enhanced level of crystallinity in the sidewall while maintaining a low level of crystallinity in a thickened base portion. The container is particularly useful as a refillable container which can withstand higher caustic wash temperatures and exhibits reduced flavor carryover, or as a hot-fill container. The container, which can be monolayer or multilayer, is also useful as a carbonated beverage, O.sub.2 or CO.sub.2 barrier, or beer container.
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