BIAXIALLY ORIENTED POLYESTER FILM AND MAGNETIC RECORDING TAPE
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United States of America Patent
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Issued Date -
Jul 1, 2010
app pub date -
Dec 27, 2006
filing date -
Feb 9, 2006
priority date (Note) -
Abandoned
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Abstract
A biaxially oriented polyester film which has a Young's modulus (YMD) in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system, and a magnetic recording tape of linear recording system comprising the same as a base film.There are provided a biaxially oriented polyester film which has excellent dimensional stability, especially dimensional stability in the width direction and is suitable for use as a base film for magnetic recording tapes of linear recording system and a magnetic recording tape comprising the same.
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