Biaxial oriented polyester film and a process for preparing the same
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United States of America Patent
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Jun 18, 2013
Grant Date -
Feb 3, 2011
app pub date -
Dec 17, 2008
filing date -
Dec 27, 2007
priority date (Note) -
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Abstract
The present invention relates to a biaxial oriented polyester film and process for preparing the same, the said film is having an average ellipticity of not more than 0.6, Poisson ratio of not more than 0.7 (at elongation greater than 25%) all along the width of web and residual enthalpy in the range of 12% to 20%, a continuous reduction in residual film area up to an elongation of 100%.
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