| 摘要 |
The melt polymer, consisting of original viscosity 0.650 is spun under the condition of the spinning temperature, 285 degree C, cooling temperature, 23 degree C, winding speed, 1,500m/min, and is ripened for 5 hours at a can coil. Subsequently, under such process conditions as 235m/min, the process oil temperature 30 degree C, and the drawing hot water bath temperature, Tg-5 ~ Tg+15 degree C, the polymer is firstly drawn, and at the crystallization device, additionally drawn, by conducting the crystallization for 4.5 second within the range of Tg+70 ~ Tg+80 degree C to improve the orientation of the single yarn.
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