Dyeing and slashing technology of tencel/Coolmax fiber elastic covering yarn

Abstract

The invention discloses a dyeing and slashing technology of tencel / Coolmax fiber elastic covering yarn. The technology comprises the following steps of S1, beam-warping; S2, warp beam dyeing pretreatment; S3, warp beam dyeing; S4, soaping and color fixation; S5, foam slashing. According to the technology, by adjusting parameters of the grey yarn beam-warping, dyeing pretreatment and dyeing technology, the quality problems such as beam-warping twisting, dyeing beam blasting, color difference and inconsistent elasticity of inner and outer layers are effectively solved, and warp beam dyeing of the elastic covering yarn is achieved. Before the dyeing pretreatment process, the circulation mode of previous pretreatment all-forward pumps is changed, a warp beam is placed in a dye jar, water is added for soaking at first, then reverse pumps are started for circulation, and the problem of dyeing blasting of the warp beam is solved. After beam-warping, a layer of low-permeability-coefficient material wraps the outer side of the warp beam, and the problems of color tone and inconsistent elasticity of the inner and outer layers are solved. Compared with a sequence of dyeing, beam-warping and slashing, hairiness and neps of the yarn can be reduced.

Description

technical field [0001] The invention relates to the technical field of yarn sizing, in particular to a dyeing and sizing process of Tencel / Coolmax fiber elastic core-spun yarn. Background technique [0002] Yarn dyeing methods are mainly hank dyeing, cheese dyeing and warp beam dyeing. Compared with the other two dyeing methods, warp beam dyeing is to wind the yarn on the warp beam, dye the warp beam directly, and then sizing, which greatly shortens the process flow, reduces energy consumption and improves production efficiency. Purpose. The most prominent feature is that when producing high-difficulty yarn-dyed varieties, it greatly reduces the defects of color difference stripes and uneven dyeing, which has played a significant role in improving product quality. At present, cheese dyeing is the main method for elastic yarn dyeing, but the color difference between the inner and outer layers of elastic yarn drum dyeing is serious, and stripes are easy to appear, especially...

AI Technical Summary

Problems solved by technology

At present, cheese dyeing is the main dyeing method for elastic yarn, but the color difference between the inner and outer layers of elastic yarn dyeing is serious, and stripes are easy to appear, especially on full-color cloth, which seriously affects the quality of the cloth surface.

However, when the uniaxial weight of the elastic core-spun yarn is less than 20Kg, the cotton yarn count is greater than or equal to 50 / 1, and some non-pure cotton varieties are used in the sizing process of the warp beam dyeing process, two or more threads are easy to Kinked together, which in turn leads to warp sticking and twisting of the produced yarns during the weaving process, resulting in warp breaks and weaving defects, which not only affect the style of the fabric surface, produce fabric surface defects, and some also produce fabric surface defects. Holes, severe cases will cause the problem of defective cloth and other cloth

There is no report on beam dyeing sizing process of Tencel / Coolmax fiber elastic core-spun yarn

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