| Summary: | 碩士 === 國立臺灣科技大學 === 高分子工程系 === 91 === In this study,an air vortex nozzle is installed below the front roller of conventional ring spinning machine,a fiber strand passes through it before the yarn is formed completely. After treating by air vortex,we can improve yarn hairiness.
In first stage, we used 100% Lyocell rovings,with the fiber length of 88mm to produce air-ring yarn.We had found the optimum conditions by Taguchi Method.When the ring-spun and air-ring yarn were produced and ready for property test,Zweigle G565 were used to measure their yarn hairiness.It is found that the number of hairs which exceeds 3mm protruding from the yarn is 50% less than that of the conventional ring yarn.
In second stage,we used the improved air nozzle which was installed in the same position as mentioned to spin air-ring yarn in cotton and wool spinning system.We can find that, in cotton spinning, the yarn hairiness reduced percentage
with 100% cotton yarn is 58.6% ,100% Rayon yarn is 74.6% ,T/C 65/35 is 31.4% ,T/R 65/35 is 40.9%.
In wool spinning system, the yarn hairiness reduced percentage with 100% wool yarn is 17%,
A/W 50/50 is 24.5% ,N/W 50/50 is 26.3%. In
addition,a lower lever of yarn twist is Required
for this new spinning system ,and a better efficiency of yarn production can be obtained by it.
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