Dyeing and finishing process of textiles

Abstract

The invention discloses a dyeing and finishing process of textiles. The dyeing and finishing process is characterized by successively comprising the following steps: preprocessing, dyeing, washing, neutralizing, soap washing and washing textiles. The dyeing process has the advantages that by adopting the low-temperature dyeing and finishing process, compared with the traditional middle-temperature dyeing process, in the dyeing step, firstly in dye of a dark color series, and by virtue of ternary color combination of dark colors, the dyeing for the series of colors such as black, dark green, dark gray and garnet is more advantageous; the dye used by the invention has high deep dyeing performance, high absorption rate and good compatibility; compared with the middle-temperature dye, the absorption rate of the dye is high, and the color of the remaining liquid is light; moreover, the consumption of the low-temperature active dye of the invention in the dyeing process of coffee brown, military green and gray colors is 40 to 70 percent of that of the middle-temperature active dye; compared with the dark color series, the production cost of the printing and dyeing enterprises is decreased, and the problem that the sewage treatment cost is high can be solved; by adopting the dyeing process, the treatment cost of the printing and dyeing industry is decreased, and the sewage discharging amount is reduced.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a textile dyeing and finishing process. Background technique [0002] At present, in the dyeing and finishing process of cellulose fiber textiles, the following steps are successively included: 1. Pretreatment of fiber textiles, 2. Dyeing, 3. Washing, 4. Neutralization, 5. Soaping, 6. Washing. In the dyeing step, medium-temperature reactive dyes are used, usually the active groups of vinyl sulfone and chloro-s-triazine components produced by DyStar or some domestic dye factories, such as 3BS red, 3RS red, B133 Yuanqing and other dyes of this type. The dyeing process is carried out at a temperature of 30°C, and the dye is slowly added within 20 minutes. The amount of dye added is 0.005-10% of the weight of the fabric, and kept for 15 minutes, and then slowly added with sodium sulfate within 20 minutes. The amount is 3-100g / L; then keep it warm for 15 minutes...

AI Technical Summary

Problems solved by technology

Taking dyeing a ton of dark fiber textiles as an example, the bath ratio is 1:10, that is, the required water volume is 10L, and the required sodium carbonate dosage is 300kg, which is a large amount, which greatly increases the cost of dyeing and finishing.