Enzyme-treated cashmere fiber dyeing process

Abstract

The invention discloses an enzyme-treated cashmere fiber dyeing process. The dyeing process comprises the following steps: A, immersing cashmere fibers into a treating fluid composed of protease, hydrogen peroxide and a wool protective agent to obtain fibers A; B, putting a low-temperature auxiliary agent, formic acid, a reactive dye and the wool protective agent into a dye liquor box, and mixing at high temperature to obtain dye liquor A; C, cooling and conveying the dye liquor A to obtain dye liquor B; D, performing hot air treatment on the fibers A to obtain fibers B; E, spraying the dye liquor B to the fibers B through a dyeing box to obtain fibers C; F, padding the fibers C in the dye liquor B, and extruding the fibers C to obtain fibers D; G, repeating the steps E and F for 4-5 times, and gradually increasing the pressure of each extrusion to obtain fibers F; and H, performing swing type back-and-forth fumigation and fixation on the fibers F from the upper side and the lower side to obtain a finished product. The dyeing process has the characteristics of reducing fiber damage and improving dyeing uniformity and color fastness.

Description

technical field [0001] The invention relates to a cashmere fiber processing technology, in particular to an enzyme-treated cashmere fiber dyeing technology. Background technique [0002] Cashmere is a very valuable natural textile raw material in the world. It has the characteristics of lightness, softness and waxiness. It is known as the king of animal fibers and has higher use value. In order to make cashmere garments of various colors, it is necessary to dye the cashmere yarns, and then weave cashmere fabrics that meet the requirements. At present, in the dyeing process of cashmere yarn, in order to increase the dyeing rate, the temperature of the dyeing solution is generally higher, but due to the presence of scales on the surface of the cashmere fiber, the higher dyeing temperature will cause damage to the cashmere fiber itself, reducing the fiber breaking strength and The elongation at break affects the fiber quality and feel; and usually only one method of spray dyei...

AI Technical Summary

Problems solved by technology

At present, in the dyeing process of cashmere yarn, in order to increase the dyeing rate, the temperature of the dyeing solution is generally higher, but due to the presence of scales on the surface of the cashmere fiber, the higher dyeing temperature will cause damage to the cashmere fiber itself, reducing the fiber breaking strength and The elongation at break affects the fiber quality and feel; and usually only one method of spray dyeing or dip dyeing is used to dye the fiber. Due to the tight structure of the cashmere fiber, not only the dyeing time is long, the dyeing efficiency is low, and the dyeing solution It is also not easy to penetrate deep into the fiber structure, and the degree of infiltration of different parts of the dye solution is different, which is prone to uneven dyeing; in addition, the adhesion between the dye solution and the fiber is not high, and it is easy to fade after repeated cleaning. poor fastness

Therefore, the existing cashmere fiber dyeing process has the problems of large damage to cashmere fiber, poor dyeing uniformity and color fastness.

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