Printing and dyeing process of Modal fiber elastic textile

Abstract

The invention discloses a printing and dyeing process of a Modal fiber elastic textile. The printing and dyeing process comprises the processes of singeing, cold stacking, refining, dyeing and post-finishing. During refining, real silk fibers are put into a refining solution, wherein the refining solution contains a refining agent, the refining agent is a mixture of sodium sulfite and dioctyl sebacate, and the ratio of sodium sulfite to dioctyl sebacate is 1:1; the refining solution is heated to 98 DEG C at the speed of 2 DEG C / minute, the temperature is maintained constant for 60 minutes, andthen water is added. During post-finishing, a nano finishing agent is adopted for prevention finishing in four aspects. The printing and dyeing process not only maintains the original excellent characteristics of a knitted fabric but also has the advantages that the performance of prevention in the four aspects is great, the strength loss is small, the dyeing fastness is high, a ventilation function is achieved, the printing and dyeing process is reasonable, and various chemical indexes of products meet the requirements of Oeko-Tex100 according to detection. Additionally, the printing and dyeing process has the advantages that the operation is easy and convenient and the process conditions are easily controlled.

Description

Technical field [0001] The invention belongs to the technical field of textiles, and specifically relates to a printing and dyeing process for Modal fiber elastic textiles. Background technique [0002] Modal fiber is a cellulose fiber. Modal fiber is a kind of regenerated cellulose fiber that is pulped from wood and sprayed out in a certain shape. Because of its breathability, stiffness, easy moisture absorption, antibacterial and antibacterial properties, Therefore, it is a high-grade textile material, and its fabric is high-grade clothing and decorative cloth. However, knitted fabrics have a low breaking resilience rate, about 2% to 4%, poor elastic stability, poor skin-friendliness, and strong rigidity, and their wearability is restricted to a certain extent. Modal fiber has the characteristics of natural fiber itself, but also has good moisture absorption, comfort, gloss, dyeability and biodegradability, and also has strong elongation characteristics; in textile, it is suit...

AI Technical Summary

Problems solved by technology

However, for a long time, in the printing and dyeing process of knitted fabrics and Modal fiber blended fabrics, there have been four major technical problems that have restricted the popularization and application of knitted fabrics: one is in the traditional process, in order to achieve the purpose of bleaching and removing impurities, The method of alkali bleaching + oxygen bleaching + chlorine bleaching is often used, but the excessive chemical reaction is difficult to ensure that the fiber will not be damaged, because Modal cellulose fiber is extremely poor in alkali resistance, and a large amount of caustic soda will cause the fiber to dissolve.

And in the whole process, a large amount of water is needed to clean the caustic soda remaining on the fabric, correspondingly a large amount of alkaline waste water is produced, which has a great impact on the environment; the second is due to its inherent characteristics of Modal cellulose fiber, in the dyeing and finishing process During the process, through the friction of the equipment, the cohesion of the fibers is reduced, resulting in heresies, and short hairs are formed on the surface

Pilling can occur like wool during wearing, and the cloth surface is not smooth, which affects the appearance of clothing

Moreover, the coloring rate of Modal fiber and knitted fabrics is very different. When dyeing, the coloring of the two fibers is inconsistent, resulting in uneven color of the cloth surface, often causing problems such as cloth surface blooming and color wilting; The problem of fibrillation is easy to occur, which makes the formation of long and uneven fibril hairs, poor anti-pilling performance, and rough appearance; the fourth is the conventional four-proof finishing agent such as Teflon finishing of Qiba, etc., finishing The back fabric feels rough and hard, has poor air permeability, loses a lot of strength, and is difficult to control color change