熔体直纺低收缩率涤纶FDY生产工艺

Polyester FDY production process with low shrinkage by melt direct spinning

对开发的278 dtex/48f低收缩率涤纶FDY生产工艺进行试验,探讨拉伸温度、定型温度、拉伸倍数等工艺对涤纶FDY沸水收缩率的影响。结果表明：熔体温度控制在286℃,纺丝温度控制在285℃,拉伸速度为1 330 m/min、拉伸温度96℃、定型温度178℃、拉伸倍数在3.2～3.3时,纺丝状况稳定、FDY的沸水收缩率符合要求。

This paper tests the production process of 278 dtex /48 f polyester FDY with low shrinkage,and discusses the effect of drawing temperature,setting temperature and drawing ratio on the boiling water shrinkage of FDY. The results show that the conditions（ i. e. temperature 287 ℃,spinning temperature 285 ℃,drawing speed 1 330 m / min,drawing temperature 96 ℃,the setting temperature 178℃ and drawing ratio 3. 2 ～ 3. 3） can ensure the better spinning stability and boiling water shrinkage of FDY.