Relation between yarn forming quality and drawingsliver & roving quality was analyzed, and relation between yarn forming quality and configuration of drawing & roving process was also discussed.
分析了熟条和粗纱质量与成纱质量的关系，并就并条、粗纱工艺配置与成纱质量的关系进行了讨论。
2
FOR yarns that require the additional step, the card sliver goes through the breaker - drawing step and then to the combing operation.
对于需要精梳的纱线，梳棉棉条通过头道并条后，进入精梳工序进行加工。
3
In this paper, friction field distribution between sliver and pressure bar on a homebred drawing frame is analyzed, and on this basis, the best range of contact arc is deduced.