While polyester fiber is subject to different draw ratio and heating temperature during high speed spin-fling, its original molecular orientation and crystallinity of polyester fiber are changed.

• 摘要聚酯在高速纺丝过程中，施以不同的拉伸倍数与温度，会造成纤维结晶度与取向度的变化，从而影响纤维的物理性能。