Low-temperature dyeing process of modified polyester and wool interwoven fabric through one-bath process

Abstract

The invention discloses a low-temperature dyeing process of modified polyester and wool interwoven fabric through a one-bath process, which comprises the following steps of: (1) putting pre-treated gray cloth into bath solution in a dyeing cylinder at 35-45 DEG C, then, adding auxiliaries, adding reactive dyes after operating for a certain time, and adding electrolyte salt after operating for a certain time, wherein the bath ratio is 1:50; (2) uniformly increasing the temperature to 70-80 DEG C, and keeping the temperature for 35-50min; and (3) decreasing the temperature to 55-65 DEG C so as to obtain cloth, wherein the auxiliaries comprise an acidity regulator and an anti-precipitation agent; and the electrolyte salt is sodium chloride. By means of the manner, the dyeing process disclosed by the invention is capable of reducing fibre damage and saving energy; furthermore, the dye uptake, the levelling property and the colour fastness of the fabric are improved; and the operation is convenient and the environmental protection is facilitated.

Description

technical field [0001] The invention relates to the field of fabric treatment, in particular to a one-bath low-temperature dyeing process for fabrics interwoven with modified polyester and wool. Background technique [0002] Polyester and wool interwoven fabrics have both the excellent characteristics of polyester and wool: high strength, good fastness, crisp, good wrinkle resistance, smooth and comfortable, easy to wash and quick dry, etc., becoming one of the most popular four-season clothing fabrics. However, there are two major problems in the dyeing of this kind of fabrics: one is the staining of wool by disperse dyes, and the other is the damage of wool by high temperature dyeing. The staining of wool by disperse dyes reduces the color fastness of polyester and wool interwoven fabrics, and makes the color dull, the difficulty of color matching increases, and the dyeing reproducibility deteriorates. [0003] In order to overcome these two major problems, the existing d...

AI Technical Summary

Problems solved by technology

However, there are two major problems in the dyeing of this kind of fabrics: one is the staining of wool by disperse dyes, and the other is the damage of wool by high temperature dyeing.

The staining of wool by disperse dyes reduces the color fastness of polyester and wool interwoven fabrics, and makes the color darker, more difficult to match, and poorer in dyeing reproducibility

[0003] In order to overcome these two major problems, the existing dyeing method is to use the two-bath dyeing method, first dyeing polyester fibers at 115-120 ° C, and then dyeing wool fibers at 95-100 ° C, the staining of dyes on wool fibers during dyeing The color is obviously increased and needs to be removed through post-processing, otherwise it will affect the color yield of wool dyeing. Although this dyeing method can increase the color fastness, it takes a long time, consumes a lot of energy, and is easy to cause additional damage to wool fibers