Application of an Automatic Yarn Dismantler to Track Changes in Cotton Fiber Properties during Full Scale Processing of Cotton into Carded Yarn

ABSTRACT

Changes in Upland cotton fiber properties from lint to carded yarn, during full scale processing, were tracked, using a newly developed automatic yarn dismantler for dismantling short staple ring-spun yarns. Opening and cleaning increased fiber neps significantly, and short fiber content (SFC) slightly, and decreased fiber length slightly, whereas the card increased fiber length, and decreased neps substantially. Fiber length decreased during spinning, indicating significant fiber breakage. The length of fibers from dismantled yarn was higher, and SFC lower, than that in the twistless strand before twist insertion, indicating that, during twist insertion, short fibers were lost as fly and through suction. Fiber linear density and maturity showed similar trends, changing little during opening and cleaning, but then increasing consistently up to the roving stage.

摘要

本文采用一种新开发的用于拆除短纤环锭纱的自动纱拆除装置，跟踪在全面处理过程中从皮棉到普梳纱的陆地棉纤维性能的变化。打开和清洗显著增加了纤维棉结，稍微增加了短纤维含量（SFC），稍微降低了纤维长度，而梳增加了纤维长度，大幅减少了棉结。在纺线过程中纤维长度减少，表明纤维断裂显著增多。相对于在捻插入前的无捻链，来自拆除的纱线的纤维长度更高、SFC 更低，这表明在捻插入期间短纤维因吸力而随时丢失。纤维的线密度和成熟度表现出类似的趋势，在打开和清洗期间改变不大，但随后持续增加，直到粗纱阶段。

KEYWORDS:

• AFIS test
• carded yarn
• cotton
• fiber properties
• yarn dismantler

关键词:

• AFIS 测试
• 粗梳纱
• 棉
• 纤维性能
• 纱线拆除

Acknowledgments

The authors would like to express their appreciation to the management and laboratory staff, of the CSIR Textile Unit, Port Elizabeth (South Africa) for assisting with the research work, and that of Prilla 2000 (Pty.) Ltd., Pietermaritzburg (South Africa) for carrying out the AFIS tests.