A kind of reactive dye dyeing process of denim fabric

Abstract

The present invention discloses an active dye dyeing process of a jean fabric. According to the present invention, a series of processes such as pre-treatment process, pre-shaping, dyeing, color fixation, post-finishing, water washing and air-drying are adopted, a double-active group active dye is adopted to replace the previous indigo blue dyeing solution and the sulfur dye, and the reasonable dyeing process condition is assistedly adopted to carry out the special dyeing process for the jean fabric; and the prepared finished product has advantages of rich color, uniform and stable color, color losing resistance during the water washing process, and the like, and the active dye is used, such that the amount of the discharged printing and dyeing wastewater in the previous dyeing process is substantially reduced so as to easily achieve the ecology environment.

Description

technical field

[0001] The invention relates to a fabric dyeing process, in particular to a denim fabric dyeing process with reactive dyes. Background technique

[0002] Since the 1980s, the development of denim in my country has been changing with each passing day. The production center of denim has shifted from the United States and other countries to countries with low labor costs in Asia, especially China. Denim has also become a widely popular ready-made clothing material because of its characteristics of wear resistance, durability and fashion. However, traditional denim fabrics are generally dyed with bromine indigo or sulfur dyes. On the one hand, the fabrics produced have a single color, which cannot meet people’s pursuit of fashion. On the other hand, the color is unstable and easy to fade during the washing process. In addition, the treatment cost of printing and dyeing wastewater generated by the sulfide dyeing process is too high, which has an adverse impact on...

Examples

Embodiment 1

[0019] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0020] (1) Pretreatment process: put the newly produced denim fabrics to be dyed into bags and put them into a washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 6g / L, the temperature is 70°C, and the liquor ratio is 1:20 , the washing time is 10 minutes; after the washing is completed and stacked for 15 minutes, the second washing is carried out at a temperature of 80°C, the bath ratio and washing time are the same as the first time, and the pH of the washing is controlled at 6.0;

[0021] (2) Presetting: Presetting the washed fabric at 140°C;

[0022] (3) Dyeing: first prepare the dye solution, mix the reactive dye type B with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 40g / L. The amount of caustic soda is 15mL / L, the amount of surfa...

Embodiment 2

[0027] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0028] (1) Pretreatment process: Put the newly produced denim fabrics to be dyed into bags and put them into the washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 9g / L, the temperature is 80°C, and the liquor ratio is 1:40 , the washing time is 20 minutes; after the washing is completed and stacked for 20 minutes, the second washing is performed at a temperature of 85°C, the bath ratio and washing time are the same as the first time, and the pH of the washing is controlled at 7.0;

[0029] (2) Presetting: Presetting the washed fabric at 150°C;

[0030] (3) Dyeing: first prepare the dye solution, mix the reactive dye EF type with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 50g / L. The amount of caustic soda is 20mL / L, the amount of surf...

Embodiment 3

[0035] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0036] (1) Pretreatment process: Put the newly produced denim fabrics to be dyed into bags and put them into a washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 7g / L, the temperature is 75°C, and the liquor ratio is 1:30 , the washing time is 15 minutes; the second washing is carried out after 18 minutes of stacking after washing, the temperature is 83 ℃, the bath ratio and washing time are the same as the first time, and the washing pH is controlled at 6.5;

[0037] (2) Presetting: Presetting the washed fabric at 145°C;

[0038] (3) Dyeing: first prepare the dye solution, mix the reactive dye type B with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 45g / L. The amount of caustic soda is 18mL / L, the amount of surfactant foaming agent is ...

technical field

[0001] The invention relates to a fabric dyeing process, in particular to a denim fabric dyeing process with reactive dyes. Background technique

[0002] Since the 1980s, the development of denim in my country has been changing with each passing day. The production center of denim has shifted from the United States and other countries to countries with low labor costs in Asia, especially China. Denim has also become a widely popular ready-made clothing material because of its characteristics of wear resistance, durability and fashion. However, traditional denim fabrics are generally dyed with bromine indigo or sulfur dyes. On the one hand, the fabrics produced have a single color, which cannot meet people’s pursuit of fashion. On the other hand, the color is unstable and easy to fade during the washing process. In addition, the treatment cost of printing and dyeing wastewater generated by the sulfide dyeing process is too high, which has an adverse impact on...

Examples

Embodiment 1

[0019] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0020] (1) Pretreatment process: put the newly produced denim fabrics to be dyed into bags and put them into a washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 6g / L, the temperature is 70°C, and the liquor ratio is 1:20 , the washing time is 10 minutes; after the washing is completed and stacked for 15 minutes, the second washing is carried out at a temperature of 80°C, the bath ratio and washing time are the same as the first time, and the pH of the washing is controlled at 6.0;

[0021] (2) Presetting: Presetting the washed fabric at 140°C;

[0022] (3) Dyeing: first prepare the dye solution, mix the reactive dye type B with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 40g / L. The amount of caustic soda is 15mL / L, the amount of surfa...

Embodiment 2

[0027] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0028] (1) Pretreatment process: Put the newly produced denim fabrics to be dyed into bags and put them into the washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 9g / L, the temperature is 80°C, and the liquor ratio is 1:40 , the washing time is 20 minutes; after the washing is completed and stacked for 20 minutes, the second washing is performed at a temperature of 85°C, the bath ratio and washing time are the same as the first time, and the pH of the washing is controlled at 7.0;

[0029] (2) Presetting: Presetting the washed fabric at 150°C;

[0030] (3) Dyeing: first prepare the dye solution, mix the reactive dye EF type with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 50g / L. The amount of caustic soda is 20mL / L, the amount of surf...

Embodiment 3

[0035] A kind of reactive dye dyeing process of denim fabric, it is characterized in that comprising the following steps:

[0036] (1) Pretreatment process: Put the newly produced denim fabrics to be dyed into bags and put them into a washing machine for one wash, add desizing enzyme OD-355 according to the dosage of 7g / L, the temperature is 75°C, and the liquor ratio is 1:30 , the washing time is 15 minutes; the second washing is carried out after 18 minutes of stacking after washing, the temperature is 83 ℃, the bath ratio and washing time are the same as the first time, and the washing pH is controlled at 6.5;

[0037] (2) Presetting: Presetting the washed fabric at 145°C;

[0038] (3) Dyeing: first prepare the dye solution, mix the reactive dye type B with dual active groups, 25% caustic soda, surfactant foaming agent, and penetrating agent, and then foam. The amount of reactive dye is 45g / L. The amount of caustic soda is 18mL / L, the amount of surfactant foaming agent is ...