熔体直纺聚酯细旦POY的工艺探讨  

Technology discussion on melt direct spinning polyester fine denier POY

作　　者：郑梦桥 

机构地区：[1]天津石化公司化纤厂,天津300271

出　　处：《聚酯工业》2003年第4期21-24,共4页Polyester Industry

摘　　要：介绍应用Zimmer公司聚酯熔体直纺138dtex/72f、129dtex/72f等规格POY。保持增压泵出口压力12～13MPa,计量泵前压力 5MPa,熔体输送温度290～292℃;喷丝板孔径为0.20mm、长径比为2.5,纺丝温度控制在293～296℃,增加细砂量、改用高目数过滤网;侧吹风风压350Pa、风速0.40～0.50m/s、风温18～20℃;集束位置距喷丝板1100mm,距内风窗0.25m。由1道上油改为2道上油。以卷绕张力应小于0.28cN/dtex来调节丝速,超喂率1.2%～1.5%,卷绕角5.5～6.5°。The production of 138 dtex/72 f and 129 dtex/72 f POY on Zimmer polyester melt direct spinning plant is introduced.The booster pump exit pressure is kept at 12～13 MPa,the pressure in front of the metering pump is ≥5 MPa,the melt transfer temperature is 290～292 ℃,the hole diameter of the spinneret is 0.20 mm,the L/D is 2.5,the spinning temperature is controled at 293～296 ℃,the fine sand amount is increased,high mesh number filter sieve is used,the cross air blow pressure is 350 Pa,the air speed is 0.40～0.50 m/s,the air temperature is 18～20 ℃,the collection position is 1 100 mm distance from the spinneret,0.25 m from the internal air window.The number of oiling times is changed from 1 to 2,the takeup tension should less than 0.28 cN/dtex to adjust the spinning speed,the overfeed rate is 1.2%～1.5%,the winding angle is 5.5～6.5°

关 键 词：熔体直纺 聚酯 细旦丝 POY 生产工艺 纺丝张力 生产设备 

分 类 号：TQ342.21[化学工程—化纤工业]