The production technology that using the spinneret with 2808 holes to produce PET staple for roofing felt base cloth on HV452 spinning machine was discussed.

• 讨论了在HV452型纺丝机上采用2808孔喷丝板生产用于防水卷材基布的涤纶短纤维的生产工艺,指出提高成品纤维的强度、断裂伸长率、降低干热收缩率是满足防水卷材基布性能要求的关键。