Research on the performances of differential shrinking wool-like polyester filament yarn

When polyester fiber is subject to different draw ratio and heating temperature during high speed spinning,it will result in changes of the original molecular orientation and crystallinity of the fiber,thus affecting its physical properties.This paper investigated the physical properties of polyester filament yarn such as tenacity,elongation and boiled water shrinkage by means of analyzing the POY which had been treated by different draw ratio and heating temperature.