83dtex/72f波浪中空涤纶工艺探讨

介绍了83 dtex/72 f波浪中空涤纶全拉伸丝(FDY)的生产工艺,通过对喷丝板设计、纺丝工艺、冷却条件、热辊拉伸等条件进行试验和对比,探索得到最佳工艺条件。试验表明:在纺丝温度291～295℃,冷却风温度22℃、冷却风速度1.2 m/s,第一热辊温度80℃、速度2 800 m/min,第二热辊温度115℃、速度3 850 m/min,卷绕速度3 800 m/min的工艺条件下,生产的波浪中空涤纶的强度为4.05 cN/dtex,断裂伸长率为40.33%,中空度为12%。

Discussion on the Technology of 83 dtex/72 f Wavy Hollow Polyester Fiber

The production process of 83 dtex/72 f wavy hollow polyester filament was introduced. The optimum technological conditions were obtained by testing and comparing the spinneret design, spinning process, cooling conditions and hot roll drawing conditions. The results show that the strength of wavy hollow fibers is 4.05 cN/dtex, breaking elongation is 40.33% and hollowness index is 12% under the conditions of spinning temperature 291～295 ℃, cold air temperature 22 ℃, winding speed 1.2 m/s, GR_1 temperature 80 ℃, GR_1 speed 2800 m/min, GR_2 temperature 115 ℃, GR_2 speed 3 850 m/min and winding speed 3800 m/min.