Cotton cloth reactive dye discharge printing process

Abstract

The invention relates to a cotton cloth reactive dye discharge printing process for use in textile dyeing and printing production, in particular to a reactive dye discharge printing process. The invention aims to substitute for the conventional reduction discharge process which is not environment-friendly and high in cost and has white discharge and poor red coloring in application by introducingthe cotton cloth reactive dye discharge printing process. The process comprises the following steps of: 1, ground dyeing of the cotton cloth with a vinyl sulfone reactive dye; 2, discharge printing ofthe cotton cloth with a color paste made from a discharge printing agent and an alkali-resisting P-type reactive dye; 3, baking for decolorization; 4, steaming of the cotton for color development; 5,water washing; and 6, drying. The formula thereof comprises: a primary paste containing 20 percent of discharge printing agent DK-TN, 20 to 30 percent of carbamide and the balance of water; a white discharging paste containing 50 to 60 percent of primary paste, 1 to 10 percent of leucotrope and water; and a color discharging paste containing Marcocion P dye stuff, 50 to 60 percent of primary paste, 1 to 8 percent of leucotrope D-TN and 2 to 4 percent of water / saleratus. The cotton cloth reactive dye discharge printing process has the advantages of updating the conventional process and the currently introduced discharge printing process, improving the discharge printing effect, reducing the printing cost, decreasing the added materials and reducing the amount of sewage generated in a process of water washing unfixed dyes. The reactive dye process is simple in technique, bright in color, soft in hand feeling and good in environment protection, belongs to innovation development, saves energy, improve efficiency and has enormous social and economic benefits.

Description

[0001] Technology fields:

[0002] The invention relates to a cotton cloth reactive dye discharge printing process in the aspect of textile printing and dyeing industry production, which not only has active discharge activity, but also adjusts the process to improve deficiencies, improve the discharge effect, and achieve energy saving and efficiency enhancement. Background technique:

[0003] Discharge dyeing can also be called carving printing, which is a special printing process in textile printing, which is developed from resist dyeing; it has always occupied a high position in the printing and dyeing industry, because the discharge printing process is relatively complicated and requires high operation , is artistic, high-grade, high added value.

[0004] In the domestic textile printing and dyeing industry, including the Shaoxing area, the commonly used discharge printing processes include paint discharge and vat dye discharge. It uses reactive dyes or Nafto dyes to dye th...

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