Method for reducing high count yarns' surface hairiness

Abstract

The invention discloses a method for reducing high count yarns' surface hairiness. The high count yarns can be cellulose type, protein type, chemical fiber type, or blended yarns of cellulose type, protein type and chemical fiber type. Chitosan and its derivative undergo crosslinking through ultraviolet light and a chemical catalyst to form crosslinked chitosan and its derivative. The crosslinked chitosan and its derivative are used as a sizing agent to penetrate and cover the surface of yarns, thus enhancing cohesive force between yarns' fibers and raising mechanical property of yarns. Then, the yarns can be resistant to repeated washing of hot soap-suds, and has antibacterial property.

Description

technical field [0001] The invention relates to a method for reducing hairiness on the surface of high-count yarns by using cross-linked chitosan as a sizing material, which belongs to the field of textile engineering. Background technique [0002] The types of yarn mainly include cellulose, protein, synthetic fiber and regenerated fiber, and the yarn count is generally between 50 and 200. However, since the yarns made of these fibers are very thin, they are prone to breakage during the weaving process, resulting in more hairiness on the surface of the yarns. [0003] Companion weaving is a method to improve the surface quality of high-count yarns: firstly, high-count yarns made of natural fibers are parallel-twisted with water-soluble yarns made of water-soluble PVA, then the parallel-twisted yarns are woven, and finally Put the fabricated fabric into a weakly acidic aqueous solution at 85-90°C to dissolve the water-soluble PVA, thus obtaining the fabric we need. [0004]...

AI Technical Summary

Problems solved by technology

[0004] However, it is easy to find from the above description that this process has many disadvantages

First, since the water-soluble reinforced yarn and the twisted yarn occupy the same space, after the water-soluble yarn is dissolved, the warp density and weft density are halved, so this process cannot weave high-density fabrics, and the variety suitability is poor; Second, this process requires the use of large quantities of water-soluble reinforcing yarns

For example, 1 kg of water-soluble PVA is needed to spin 1 kg of cashmere, and water-soluble reinforced yarn needs to be extracted from petroleum, so a large amount of water-soluble reinforced yarn will cause resource and environmental problems

At the same time, we need a lot of hot water to process water-soluble PVA and rinse fabrics, and because the water-soluble PVA will solidify as the temperature of the desizing solution decreases, it will increase a lot of difficulties for the treatment of water-soluble PVA; Soaking in high temperature hot water at 85-90℃ for a long time can completely dissolve the water-soluble reinforcing yarn, so there will be problems with the color fastness of the fabric after soaking in high-temperature hot water; in addition, high temperature will also cause wool felting problems , which in turn affects the dimensional stability of fabrics produced by this method