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 通過對不同拉伸倍數(shù)及不同溫度處理的poy的分析,探討長絲紗的強度、伸長度及沸水收縮率等物理機械性質(zhì)。