Novel scouring and bleaching technology for pure flax yarn

Abstract

The invention discloses a novel scouring and bleaching technology for a pure flax yarn. The technology comprises the following steps of 1, roving; 2, prebleaching; 3, spinning; 4, final bleaching. Cheese sleeves a creel and is placed in a scouring and bleaching pot. The steps of acid pickling, neutralization, primary bleaching, secondary bleaching and washing with water are implemented in sequence. According to the novel scouring and bleaching technology, it is guaranteed that a spun yarn is more even after being subjected to final bleaching, the strength of the spun yarn is guaranteed, the yarn formation quality is good, the final bleaching is greatly lowered, obtained spun flax yarn fibers have gaps, and the hand feeling is softer. According to the novel scouring and bleaching technology, the problem of traditional scouring and bleaching and spinning technologies is solved through thick yarn prebleaching-spun yarn final bleaching, the problem that the degree of traditional thick yarn scouring and bleaching is not easily controlled is solved through two steps, the controllability of the technology is achieved, and the high yarn formation quality of the flax fiber spun yarn is guaranteed.

Description

technical field [0001] The invention relates to the field of flax spinning, in particular to a novel boiling and bleaching process for pure flax yarn. Background technique [0002] As a pure natural fiber, flax has the remarkable characteristics of sweat absorption, good air permeability and harmlessness to human body, and has been paid more and more attention in the clothing and textile industries. The flax roving bleaching process is the core of the flax factory production process. In order to obtain spinnable flax fibers, it must go through degumming. The roving bleaching is to remove some pectin and lignin in the fibers and improve the splitting degree of the flax fibers. Guarantee the necessary slippage between the fibers during the drafting of the spun yarn, so as to improve the quality of the flax spun yarn. With the introduction of the concept of green textile, biological enzymes are gradually applied to the scouring of flax roving. Enzymatic scouring of flax rovin...

AI Technical Summary

Problems solved by technology

However, the control of the scalding and bleaching process is the key to the quality of the final spun yarn, because after the flax yarn is spun into roving, if the scalding 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 seriously removed, 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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