Method for improving performances of yarns formed by vortex spinning

Abstract

The invention relates to a method for improving performances of yarns formed by vortex spinning by reducing the modulus and the rigidity of fibers on line and belongs to the field of textile processing. According to the method disclosed by the invention, a sectional softening treatment method is applied for carrying out progressive softening treatment on fibers subjected to vortex spinning on a vortex spinning machine, and thus the fiber modulus and the bending rigidity are quickly reduced on line and the performances of the resultant yarns prepared from fibers by vortex are improved. For a vortex yarn structure, the structure compactness is improved, the yarn strength is enhanced and residual torque of the yarns is small; in addition, the non-spinning fibers can be subjected to vortex spinning on the vortex spinning machine; the fibers with poorer quality for the resultant yarns formed by the vortex spinning are subjected to high-quality spinning on the vortex spinning machine; and particularly, the improvement on the spun count of the fibers on the vortex spinning machine is facilitated and the smooth production of high grade cotton yarns formed by vortex spinning is realized. The method disclosed by the invention has the advantages of short work procedure flow, strong pertinence, high efficiency, lower cost, reasonable structure, convenience in operation and easiness in large-area popularization and use.

Description

technical field [0001] The invention relates to a method for improving the yarn-forming performance of vortex spinning by reducing fiber modulus and stiffness online, and belongs to the field of textile processing. technical background [0002] Vortex spinning is a new spinning method that uses a fixed vortex spinning tube to replace the high-speed rotating spinning cup, spinning spindle and traveler for spinning. In the early 1950s, the United States used liquid eddy currents for spinning experiments. After 1955, several countries including the Federal Republic of Germany and Poland successively studied the use of air vortex for spinning. In 1960, China began to conduct research on the use of air vortex spinning. At the International Textile Machinery Exhibition in 1975, Poland exhibited an air vortex spinning machine (PF type), and established an intermediate test workshop to make vortex spinning trial production. The current relatively mature and widely used vortex spi...

AI Technical Summary

Problems solved by technology

It is undeniable that by improving the mechanical design of the key spinning mechanism of the vortex spinning machine, the quality of the vortex spinning can be improved to a certain extent. With leapfrog development, most staple fibers still cannot be produced on vortex spinning machines for high-count yarn production, and the yarn structure obtained by vortex spinning is still relatively loose

Chinese Patent Publication No. CN102108574, publication date 2012.04.25, the invention name is a method for producing hemp yarn by vortex spinning. This application case provides a method for producing hemp yarn by vortex spinning for the problem that hemp yarn cannot meet the requirements of high-count and high-density fabrics. The method is to improve the spinnability of ramie fiber by performing a series of pretreatments on the hemp fiber in the process before eddy current spinning, and then use the prepared ramie fiber raw material for conventional eddy current spinning, which improves the hemp fiber to a certain extent. The quality of the eddy current yarn and the spinnable count of the hemp fiber are improved; however, this method involves multiple pre-spinning processes such as the plucking machine, the mixing opener, the vibrating cotton box, the lapping machine, and the carding machine, resulting in the use of The production process of high-quality ramie fiber for eddy current spinning is too long and the cost is too high, which is not conducive to popularization and large-scale use

However, this application is aimed at the problem of yarn hairiness in the ring spinning processing process of grip-end spinning, and in the spinning process, only by heating, the instantaneous reduction effect of fiber modulus and stiffness is poor

So far, there is still no way to improve the spinning performance of rotor spinning by reducing the fiber stiffness online and generally improving the fiber's easy to control and easy torsion and twisting performance for improving eddy current spinning

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