Pre-treatment technology of tencel fabric

Abstract

The invention discloses a pre-treatment technology of a tencel fabric. The pre-treatment technology comprises the following steps: (1) singeing; (2) desizing; (3) bleaching. Compared with the prior art, the pre-treatment technology disclosed by the invention has the beneficial effects that desizing, bleaching and whitening in traditional tencel fabric pre-treatment are realized in an independent bleaching procedure through a dyeing and finishing process; the process flow is shortened and the production efficiency is improved; meanwhile, the shrinkage rate of the tencel fabric can be ensured; desizing liquid used in the pre-treatment technology has a good desizing effect, slurry can be sufficiently hydrolyzed and textiles are not damaged; impurities and mineral substances on fibers can be removed, and the whiteness and water absorptivity of textile semi-finished products can be improved; bleaching liquid used in the pre-treatment technology has good stability and a strong bleaching capability and does not damage the fibers.

Description

technical field [0001] The invention relates to the field of fabric dyeing and finishing, in particular to a pretreatment process for tencel fabrics. Background technique [0002] Tencel is a kind of cellulose fiber spun by solvent wet method. It has high hygroscopicity and swelling property. The surface of the fiber is relatively smooth. Its cross section is round or oval, and its luster is soft. The fabric made of Tencel has soft hand feeling, good drapability, good airiness, and high skin-friendliness. Due to its high moisture absorption, Tencel fabric is especially suitable as summer bedding. Compared with cotton fiber, the crystallinity of tencel fiber is slightly lower, only about 50%. During the dyeing and finishing process, the fiber is easily corroded by water and chemical reagents, causing the fiber and yarn to swell after moisture absorption. Shrinkage will eventually make the shrinkage rate of the fabric unqualified. At present, the pre-treatment of Tencel a...

AI Technical Summary

Problems solved by technology

Compared with cotton fiber, the crystallinity of tencel fiber is slightly lower, only about 50%. During the dyeing and finishing process, the fiber is easily corroded by water and chemical reagents, causing the fiber and yarn to swell after moisture absorption. Shrinkage, eventually making the shrinkage of the fabric unqualified

At present, the pre-treatment of Tencel adopts the form of cold pad-batch. However, this method will cause large fluctuations in shrinkage in different regions and seasons. Especially in winter processing, there are many unstable factors in fabric shrinkage.