转杯纱退绕方式对条干质量的影响

转杯纺筒子纱不同退绕方式的试验数据分析表明：逆时针退绕严重恶化纱线条干。文中从转杯纱结构出发探讨了其产生机理，指出缠绕纤维是恶化条干的根本原因，由于缠绕纤维具有方向性，生产中采用偶数工序退绕有利于保持转杯纱原有条干水平。

Influence of Rotor Spinning Package Unwinding Way to Yarn Evenness Quality

This paper analyses test data of rotor spinning package unwinding way,and makes clear that anti clockwise unwinding way worsens yarn evenness heavily.This paper also discusses forming mechanism of rotor spun yarn based on rotor spun yarn structure,and points out wrapper fibres are basic cause of worsening yarn evenness,because wrapper fibres have direction,so in production practice using even number process unwinding is beneficial to keep rotor spun yarn original yarn evenness.