阐述了粗纱工艺参数中定量、粗纱捻系数以及细纱后牵伸的选择。

This article relates how to select fixed-quantity and twist in the technology parameters of roving, and back draft in the technology parameters of spun yarn.

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并通过正交试验对后区牵伸倍数、罗拉中心距和粗纱捻系数进行了优选。

Through orthogonal experiment, parameter of back zone draft multiple, roller center distance and roving twist factor are selected.

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研究了喂入粗纱间距、捻系数与成纱性能的关系，测试分析了聚丙烯腈预氧化纤维涤纶长丝包芯纱的性能。

Relation among feeding roving gauge, twist factor and yarn property were researched, property of polyacrylonitrile preliminary heat treatment in oxidizing polyester filament core-spun yarn was tested.

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