Efficient dyeing process for cotton-polyester blended fabric

Abstract

The invention discloses an efficient dyeing process for cotton-polyester blended fabric, relates to a dyeing and finishing process, and aims to solve the problems of serious energy consumption and tedious process in traditional blended fabric dyeing and finishing, and the technical scheme is characterized by comprising the following steps: S1, fabric material selection: selecting T/C fabric or CVC fabric as gray fabric, checking that no obvious defect exists on the surface of the gray fabric, and then performing pre-shaping by hot air; s2, dye proportioning: sequentially proportioning dyes according to the type of the gray fabric, S3, dyeing: putting the gray fabric into a dyeing machine, adding the proportioned dyes into the dyeing machine according to a bath ratio, operating for 20 minutes, heating to 130 DEG C, and operating for 40 minutes; s4, preparing an alkaline agent, uniformly mixing anhydrous sodium sulphate and sodium carbonate, directly adding the mixture into the dyeing machine after dyeing is completed, and operating for 20 minutes; and S5, cooling and re-dyeing. According to the invention, the process duration of dyeing and finishing the blended fabric is shortened, the total amount of steam, electricity and water required in the traditional process is reduced, the process is more energy-saving and environment-friendly, and the use and pollution of water resources are reduced.

Description

technical field [0001] The invention relates to a dyeing and finishing process, more particularly, to a high-efficiency dyeing process for cotton-polyester blended fabrics. Background technique [0002] Cotton / polyester blended fabrics have the advantages of polyester fabrics and cotton fabrics, with excellent elasticity, good abrasion resistance, stable fabric dimensions, not easy to shrink, the resulting clothes are not easy to wrinkle, easy to wash and dry, and moisture wicking, soft to the touch, Therefore, it is welcomed by the majority of consumers, and is increasingly used in various clothing fabrics [1-3]. Among them, cotton / polyester blended fabrics are divided into T / C and CVC. The cotton component in CVC fabrics is more than 60%, and the natural properties of cotton are more prominent. They are often used in clothing fabrics; T / C fabrics have polyester content. Above 60%, it is often used in tooling fabrics. [0003] The dip dyeing process of cotton / polyester bl...

AI Technical Summary

Problems solved by technology

[0003] The exhaust dyeing process of cotton / polyester blended fabrics is complicated, and there are various dyes to choose from. Usually, disperse dyes are used to dye polyester, and reactive dyes are used to dye cotton. However, this dyeing process has many difficulties: disperse dyes will stain the cotton component at high temperature. color, and it is not easy to wash, which will affect the final fabric fastness, and the color matching of cotton / polyester fabrics is complicated, and it is necessary to match the colors of cotton and polyester separately, and it needs to be flattened, which increases the difficulty of dyeing

Therefore, for the disperse dye / reactive dye exhaust dyeing process of cotton / polyester blended fabrics, the general dyeing factory will choose the two-bath two-step dyeing process, which is complicated in process, cumbersome in operation and high in cost.

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