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HANGZHOU FENGYI TEXTILE CO.,LTD

Add:No.212 Yaqian Road, Yaqian Town, Xiaoshan, Hangzhou, China

Contact us:Doris Ding

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E-mail:dorisding81@fypolyester.com


The Relation Between Twist And Strength Of Twisted Yarn

HANGZHOU FENGYI TEXTILE CO.,LTD | Updated: Oct 10, 2017


The yarn tensile rupture, fracture section found not all fiber fracture, but a part of the fiber fracture, another part of the fiber and fiber slippage, fracture fracture is not at the same time, the fracture behavior and strength of single yarn and yarn twist has a close relationship with the increasing of twist yarn. The strength to continue to increase, but to continue to add some twist after twist, strength decreased and the beneficial aspects of the twist increases, fibre friction resistance increases, increase the strength of components in the fracture process, the downside is the twist increases, dip fiber and yarn axis force increase the fiber strength in yarn can withstand axial the lower, and twist yarn and fiber would increase the stress distribution is not uniform, the fibrous fracture at different time, the strength increases with the twist, two When they are equal the maximum strength, then the critical twist twist, twist factor corresponding to the critical twist is called the critical factor. The increase of twist, twist angle increases, the light reflected from the side to the side, bad gloss, feel bad, and soft, but twisting through a small Mao Yu, feel loose, gloss is not good.

The quality requirements and the main direction of twist twist coefficient depends on the final product, different uses of different twist factor, twist to the need to see the finished product and after the process, in order to reduce yarn machine turning and operation inconvenience, is generally Z twist. Such as cotton fiber length, fineness, high grade, twist factor can be less than the coarse fine yarn yarn twist coefficient. The elongation is in cotton yarn under tensile load, tensile and elongation of cotton yarn, its length is called the total elongation, when the load is removed, the stretched cotton back soon, but not back to the original length of the telescopic length, elastic elongation, elastic elongation and as a percentage of total elongation, elastic yarn increases with the increasing of twist, but by some twist began to decline after the general close to the maximum elastic twist twist range.


HANGZHOU FENGYI TEXTILE CO.,LTD

Add:NO.212 YAQIAN ROAD,YAQIAN TOWN,XIAOSHAN,HANGZHOU,CHINA

Contact us:DORIS DING

Tel:+86-571-83717108

Fax:+86-571-83717108

Mob:+8618668232609

E-mail:dorisding81@fypolyester.com