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Undrawn polyethylene terephthalate (PET) fiber, drawn PET fiber, and tire-cord comprising the same
Undrawn polyethylene terephthalate (PET) fiber, drawn PET fiber, and tire-cord comprising the same
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机译:未拉伸聚对苯二甲酸乙二酯(PET)纤维,拉伸PET纤维以及包括该纤维的轮胎帘线
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摘要
The present invention relates to an undrawn PET fiber and a drawn PET fiber those can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, and a tire cord including the same. The undrawn PET fiber may be a fiber of which the crystallinity is 25% or more, the birefringence index is 0.085 to 0.11, the amorphous orientation factor (AOF) is 0.15 or less, and the melting temperature (Tm) is 258° C. or more.
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