Biaxially oriented polyester film
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United States of America Patent
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Jun 7, 2005
Grant Date -
Jan 27, 2005
app pub date -
Dec 11, 2002
filing date -
Dec 11, 2001
priority date (Note) -
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Abstract
The biaxially oriented polyester film of the present invention useful for twist wrapping is prepared by biaxially drawing a polyester sheet which has a glass transition temperature (Tg) of at least 60° C., in the longitudinal and transverse directions, wherein the biaxially oriented film has a specific gravity of 1.38 or less.
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