A kind of preparation method of torsion balance composite yarn for knitting

Abstract

The invention relates to a manufacturing method for torsion balance composite yarn for knitting and belongs to the technical field of knitting. The existing spinning device is used, and when the composite yarn is spun, a piece of core yarn with the twisted direction opposite to that of spindle rotation is fed. Simultaneously, a relation between spindle rotation speed and core yarn twisting degree is adjusted, and when the ratio of the twisting degree generated by spindle rotation to the twisting degree of the fed core yarn is 50%-68%, wrap yarn with the twisted direction of inner-layer core yarn opposite to that of an outer-layer fiber strip is spun to achieve torsional balance of the yarn itself. Under the premise that an additional device is not added, and production cost is reduced, remaining torsion of the yarn is eliminated, biasfilling of knitted fabric is controlled fundamentally, cutting use rate of fabric is improved, and smoothness and appearance of fabric surface are maintained.

Description

technical field [0001] The invention relates to a method for making a composite yarn, more precisely, relates to a method for making a torsion-balanced composite yarn for knitting, and belongs to the technical field of textiles. Background technique [0002] Distortion of knitted fabrics is a common problem in single-jersey knitted fabrics. It not only affects the beauty and comfort of fabrics and clothing, but also reduces the cutting utilization of knitted fabrics. Studies at home and abroad have shown that the distortion of knitted fabrics is caused by factors such as the residual torque of the yarn and the production process, and is affected by yarn parameters, weaving parameters, and finishing processes. And the residual torque of the yarn is generated during the spinning process. [0003] Twisting is an important part of short fiber spinning. During twisting, the yarn will generate a large amount of residual torque, which will have a great influence on subsequent pro...

AI Technical Summary

Problems solved by technology

For example, the patent publication No. CN02118588.3 disclosed on April 4, 2002 is a single-strand torque-free ring-spun yarn processing method and equipment. The beam splitting device uses physical methods to reduce the residual torque of the yarn, but the structure of the spinning device such as the false twisting device provided by it is very complicated, which is inconvenient to manufacture and use, especially after the false twister is installed, the yarn breakage , the joint problem is obvious, the yarn cannot get a stable false twist effect, the spinning effect is poor, and the cost is high

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