烟用醋酸纤维丝束的未卷曲能测试及其影响因素

Uncrimping Energy of Cigarette Cellulose Fibers and Its Affecting Factors

未卷曲能是衡量烟用醋酸纤维丝束卷曲程度的一项质量指标。为准确测试丝束的未卷曲能，必须消除拉伸过程中的打滑现象并保持一个较衡定的温湿度条件。改变丝束的油剂含量能在一定范围内调节丝束的未卷曲能。刚生产出来的丝束和放置了一段时间的丝束相比较，它们的未卷曲能是有区别的，后者大于前者。若要比较不同丝束的未卷曲能，则要放置３ 天以上才能测试。

The uncrimping energyisanimportant quality datato measurethecrimping ofcigarettecellulosefibers .itis closely related to the performance ofthe filter rods made of this kind of fibers .We found that the test accuracy ofthe uncrimping energy are some what affected by such factors as clamp slipping ,humidityfluc tuation ,lubricantlevel,different time length of inventory .Based on test results,these affecting factors were consided to ensure the accuracy oftest results.