A processing method and device for ring-spun yarn with less hairiness and low torque

Abstract

The invention discloses a method for processing a less-hairiness low-torque ring yarn. The method comprises the following steps: firstly, blowing away outer-layer fibers of a yarn output from a spinning triangle area; secondly, applying rotational air flow opposite to ring twisting to the outer-layer fibers of the yarn, so that the outer-layer fibers of the yarn and inner-layer fibers of the yarn are reversely twisted, and the outer-layer fibers of the yarn are reversely wound around the inner-layer fibers of the yarn; finally, spinning the less-hairiness low-torque ring yarn. According to the method, by the simple improvement of an existing ring spinning machine, the possibility of processing the less-hairiness low-torque ring yarn in one process step through one machine is realized. The technology is applied to production of all types of short fiber materials, and can be used for processing a low-twist yarn which cannot be normally processed by a conventional ring spinning machine. The less-hairiness low-torque ring yarn is excellent in mechanical performance, good in hand feeling, uniform in evenness, less in surface hairiness and low in residual torque.

Description

technical field [0001] The invention belongs to the technical field of ring-spinning staple fiber yarns, and further relates to a method and a device capable of reducing hairiness and torque of ring-spinning single yarns in one step. Background technique [0002] Yarn hairiness is mainly formed in the spinning process. When spinning on a ring spinning machine, there is a spinning triangle during twisting to form the yarn. Part of the fibers in the strands at the spinning triangle cannot be effectively controlled, and the ends of some free fibers cannot be twisted into the inner layer of the yarn during twisting and remain outside the main body to form hairiness. In addition, during the yarn forming process, the yarn is subjected to tension. The yarn tension causes the fibers in different positions in the yarn body to be subject to different centripetal pressures, resulting in repeated internal and external transfer of fibers in the radial direction of the yarn. During the...

AI Technical Summary

Problems solved by technology

The short fiber core-spun yarn formed by this yarn has better physical properties, but the residual torque problem of the yarn has not been well solved

Through the introduction of the problem of reducing yarn hairiness and residual torque in ring spinning technology, it can be found that these methods are all single, and need to go through multi-step processes to reduce yarn hairiness and residual torque respectively

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