83 dtex/36f轻网高弹涤纶DTY生产工艺

Production process of 83 dtex /36 f high elasticity PET DTY

通过优化涤纶DTY加工中牵伸比、网络压力、变形温度、定型温度、定型超喂和卷绕超喂、D／Y比等工艺条件，研究83dtex／36f轻网高弹涤纶DTY的生产工艺。结果表明：选择牵伸比1．75～1．79，网络压力0．12MPa，变形温度195～197℃，定型温度90～95℃，适当提高定型超喂（5．5％左右）和卷绕超喂（3．7％左右），可得到卷曲收缩率为29．4％的纤维，有利于获得高弹性、蓬松度良好、网络均匀的涤纶DTY。

The production process of 83 dtex/36 f high crimp PET DTY was discussed through the optimization of draw ratio, network pressure, texturing heater temperature, setting heater temperature, set overfeed, take-up overfeed and D/Y ratio. The results show that the crimp contraction rate increases to 29. 4% by selecting draw ratio 1. 75～1. 79, network pressure 0. 12 MPa, texturing temperature 195～197℃ and setting temperature 90～95℃ and increasing set overfeed to 5. 5% and crimp overfeed 3. 7%, which helps to produce PET DTY with high elasticity.