Bath method of dyeing

Abstract

A single bath method for dyeing fabric includes such steps as choosing dye, mixing it with reactive dye, dissolving, regulating the dyeing condition according to the one of dye mixture, which requires lower temp. adding dyeing promoter, retarding agent and fixative, dyeing, regulating the dyeing condition according to the one of dye mixture, which requires higher temp. and dyeing, cooling and washing. Its advantages are low cost, and high dyeing quality.

Description

technical field

[0001] The invention relates to a method for dyeing textiles, especially a one-bath dyeing method for blended fabrics of cotton and other chemical fiber materials. Background technique

[0002] At present, textile printing and dyeing enterprises generally use the two-bath method for dyeing cotton or cotton and other chemical fiber blended fabrics (such as nylon, ammonium fiber, nylon, etc., except acrylic). Its main process steps are as follows: 1. Squeeze the fabric to be dyed to remove oil, wax and other impurities. 2. The cotton in the fabric is dyed for the first time with reactive dyes. 3. After fixing the color of the fabric dyed for the first time, wash it. 4. According to the difference of the blended chemical fiber material, dyes with different properties (acidic, weak acidic, neutral, etc.) are selected to dye the fabric for the second time. 5. Wash with water and then soap to remove floating color. In the production process of the two-bath dyei...

Examples

Embodiment 1

[0012] like figure 2 As shown, the process of using reactive dyes and acid dyes to dye cotton and nylon blended fabrics black in one bath:

[0013] Choose one part of reactive yellow 3RS for reactive dyes, one part of reactive red 3BS, ten parts of reactive black KN-G2RC, one part of acid black LD for acid dyes, four parts of neutral black BL, mix the dyes and dissolve them in the dyeing vat to make Dye solution at 60-70°C. Prepare 100 g / L of sodium hexametaphosphate, 30 g / L of soda ash, and 1 g / L of sodium hexametaphosphate in proportion to the volume of the dye solution. Immerse in the blended fabric to be dyed at a bath ratio of 1:20. The temperature of the dye solution is controlled at 60-70°C. After 5 minutes, add 1 / 3 part of sodium sulfate, add once every 10 minutes, and add in three times. Natalan plays a role in accelerating the dyeing of reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retarding the dyeing of acid dyes, p...

Embodiment 2

[0016] The process of dyeing cotton and polyester blended fabrics with a one-bath method of bright red using reactive dyes and weak acid dyes:

[0017] For reactive dyes, choose one part of reactive scarlet 3BS, one part of reactive yellow 3RS, and one part of reactive yellow RS. Mix the dyes and dissolve them in the dye vat to make a dye solution at 50°C. Prepare 100 grams according to the volume of the dye solution. Yuanmingfen per liter, trisodium phosphate at 30 grams per liter, sodium hexametaphosphate at 1 gram per liter. Immerse in the blended fabric to be dyed at a bath ratio of 1:20. The temperature of the dye solution is controlled at about 50°C. After 5 minutes, add 1 / 3 part of sodium sulfate, add once every 10 minutes, and add in three times. Yuanming powder acts as a dyeing accelerator for reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retards dyeing for acid dyes, preventing the reaction of reactive dyes and polyester...

Embodiment 3

[0020] The one-bath method of orange dyeing of cotton and nylon blended fabrics using reactive dyes and weak acid dyes:

[0021] For reactive dyes, choose one part of reactive big red yellow X3R, one part of reactive yellow X-G, and one part of weak acid orange GS. Mix the dyes and dissolve them in the dyeing vat to make a dye solution at about 35 °C. Prepare 100 g / L of table salt, 30 g / L of soda ash, and 1 g / L of sodium hexametaphosphate in proportion to the volume of the dye solution. Immerse in the blended fabric to be dyed at a bath ratio of 1:20, control the temperature of the dye solution at about 35°C, add 1 / 3 portion of salt after 5 minutes, add once every 10 minutes, and add in three times. Salt acts as a dyeing accelerator for reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retards dyeing for weak acid dyes, preventing the reaction of reactive dyes and ammonium fiber in blended fabrics. After the salt is added, add soda a...

technical field

[0001] The invention relates to a method for dyeing textiles, especially a one-bath dyeing method for blended fabrics of cotton and other chemical fiber materials. Background technique

[0002] At present, textile printing and dyeing enterprises generally use the two-bath method for dyeing cotton or cotton and other chemical fiber blended fabrics (such as nylon, ammonium fiber, nylon, etc., except acrylic). Its main process steps are as follows: 1. Squeeze the fabric to be dyed to remove oil, wax and other impurities. 2. The cotton in the fabric is dyed for the first time with reactive dyes. 3. After fixing the color of the fabric dyed for the first time, wash it. 4. According to the difference of the blended chemical fiber material, dyes with different properties (acidic, weak acidic, neutral, etc.) are selected to dye the fabric for the second time. 5. Wash with water and then soap to remove floating color. In the production process of the two-bath dyei...

Examples

Embodiment 1

[0012] like figure 2 As shown, the process of using reactive dyes and acid dyes to dye cotton and nylon blended fabrics black in one bath:

[0013] Choose one part of reactive yellow 3RS for reactive dyes, one part of reactive red 3BS, ten parts of reactive black KN-G2RC, one part of acid black LD for acid dyes, four parts of neutral black BL, mix the dyes and dissolve them in the dyeing vat to make Dye solution at 60-70°C. Prepare 100 g / L of sodium hexametaphosphate, 30 g / L of soda ash, and 1 g / L of sodium hexametaphosphate in proportion to the volume of the dye solution. Immerse in the blended fabric to be dyed at a bath ratio of 1:20. The temperature of the dye solution is controlled at 60-70°C. After 5 minutes, add 1 / 3 part of sodium sulfate, add once every 10 minutes, and add in three times. Natalan plays a role in accelerating the dyeing of reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retarding the dyeing of acid dyes, p...

Embodiment 2

[0016] The process of dyeing cotton and polyester blended fabrics with a one-bath method of bright red using reactive dyes and weak acid dyes:

[0017] For reactive dyes, choose one part of reactive scarlet 3BS, one part of reactive yellow 3RS, and one part of reactive yellow RS. Mix the dyes and dissolve them in the dye vat to make a dye solution at 50°C. Prepare 100 grams according to the volume of the dye solution. Yuanmingfen per liter, trisodium phosphate at 30 grams per liter, sodium hexametaphosphate at 1 gram per liter. Immerse in the blended fabric to be dyed at a bath ratio of 1:20. The temperature of the dye solution is controlled at about 50°C. After 5 minutes, add 1 / 3 part of sodium sulfate, add once every 10 minutes, and add in three times. Yuanming powder acts as a dyeing accelerator for reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retards dyeing for acid dyes, preventing the reaction of reactive dyes and polyester...

Embodiment 3

[0020] The one-bath method of orange dyeing of cotton and nylon blended fabrics using reactive dyes and weak acid dyes:

[0021] For reactive dyes, choose one part of reactive big red yellow X3R, one part of reactive yellow X-G, and one part of weak acid orange GS. Mix the dyes and dissolve them in the dyeing vat to make a dye solution at about 35 °C. Prepare 100 g / L of table salt, 30 g / L of soda ash, and 1 g / L of sodium hexametaphosphate in proportion to the volume of the dye solution. Immerse in the blended fabric to be dyed at a bath ratio of 1:20, control the temperature of the dye solution at about 35°C, add 1 / 3 portion of salt after 5 minutes, add once every 10 minutes, and add in three times. Salt acts as a dyeing accelerator for reactive dyes, promoting the combination of reactive dyes and cotton in blended fabrics, and retards dyeing for weak acid dyes, preventing the reaction of reactive dyes and ammonium fiber in blended fabrics. After the salt is added, add soda a...

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