| 摘要 |
PURPOSE: A polyester fiber and a manufacturing method thereof are provided, which has high contractibility, increased bulky and touch, and increases the workability of an after-process by controlling contraction of grey yarn. CONSTITUTION: The polyester fiber having high contractibility is characterized by adding 4-10pts.wt. of dimethyl isophthalate(DMI) and 3-9pts.wt. of 2-2bis£4-(2-hydroxy ethoxy) phenyl| propane(BPE) based on 100pts.wt. of dimethyl terephthalate in a polymerizing process of dimethyl terephthalate and ethylene glycol. Nonaqueous shrinkage ratio(Sr) is 7-12, and dry-heat shrinkage ratio(Rsr) is 14-25.
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