Drawn polyethylene terephthalate fiber, pet tire cord, and tire comprising thereof
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United States of America Patent
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Jun 2, 2015
Grant Date -
Feb 3, 2011
app pub date -
Mar 31, 2009
filing date -
Mar 31, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20 g/1000 d.
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