Novel linen yarn wet spinning process based on long linen

Abstract

The invention discloses a novel linen yarn wet spinning process based on long linen. The long linen is used as a raw material. The process includes following steps: (1), extending; (2), forming strips; (3), drawing; (4), roving; (5), spinning; (6), scouring and bleaching. Resultant yarn is high in quality, end breakage rate is lowered greatly, gaps exist among obtained linen fine yarn fiber, and hand feeling is softener. The problem in conventional scouring and bleaching and spinning processes is divided into rough yarn pre-bleaching-fine yarn final-bleaching, and the problem that conventional rough yarn scouring and bleaching degree is difficult in control is divided into two steps, so that controllability of the process is realized, and high resultant yarn quality of linen fine yarn is ensured.

Description

technical field [0001] The invention relates to the field of flax spinning, in particular to a novel flax yarn wet spinning process based on long flax. Background technique [0002] Nowadays, with the improvement of living standards, people have higher and higher requirements for clothing fabrics. Flax fiber fabrics are known as natural air conditioners. Flax has excellent heat dissipation performance. Flax is the most noble fiber in natural fibers. Clothes made of linen are very popular among people. [0003] At present, the production of linen yarn in the textile industry includes dry spinning and wet spinning. Among them, the process route of wet spinning mainly includes: organic flax beating into hemp - combing - slivering - drawing - roving - boiling and bleaching - wet spinning spun yarn - drying - winding. [0004] CN101649544A discloses a flax organic yarn manufacturing process using organic flax as raw material, using oxygen bleaching and chlorine-free environmen...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned patents give the basic process of flax production at present, but there are some problems. The current flax process basically follows the route of "floating first and then spinning" of "roving-boiling and bleaching-spun yarn".

However, the yarn quality of the spun yarn plays a key role in the boiling and bleaching step, because after the flax yarn is spun into roving, if the boiling and bleaching process is too light, the removal of impurities will be incomplete and the amount of numbness will be large. And hidden in the roving, if the degree of bleaching is heavy and the amount of pectin in the hemp fiber is removed seriously, it will directly affect the strength of the roving, which will lead to a decrease in the strength of the final spun yarn

Moreover, due to the uneven fiber thickness of the roving itself, it will become more uneven after being boiled and bleached, resulting in irreversible unevenness in the spun yarn, and frequent end breaks during spinning, which directly affects the feel of the final hemp fabric and powerful

The traditional roving bleaching process often takes 4-6 hours of processing time, and requires a large amount of water for pickling and neutralization. Not only does the process last for a long time, but also the consumption of chemicals and water is very large, the cost is high, and the production efficiency is restricted.

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