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动态热应力及其不匀率可以反映预取向丝(POY)的内在质量,通过调节纺丝温度、改变纺丝速度、优化冷却条件等途径可以优化POY热应力,消除锭位之间热应力差异,从而确保同一规格POY产品的热应力值控制在后加工生产的适宜范围,提高后加工品质和生产效率.“,”The dynamic thermal stress and uneven rate can reflect the immanent quality of pre-oriented yarn (POY).By adjusting spinning temperature and speed,optimizing cooling conditions,the thermal stress of POY was optimized,the thermal stress differences between ingots were eliminated,thus the thermal stress value of the same specification product was controlled in suitable scope of the post processing,the processing quality and production efficiency were improved.