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A dark-color polyester fabric post-treatment process

A polyester fabric and post-processing technology, applied in the textile field, can solve problems such as complicated procedures, increased difficulty in sewage treatment, and environmental pollution

Inactive Publication Date: 2019-05-07
LANGXI YUANHUA TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, sodium hydrosulfite has low cost and good cleaning effect, and is widely used in reduction cleaning after dyeing with disperse dyes. However, hydrosulfite easily releases sulfur dioxide gas to pollute the environment, which increases the difficulty of sewage treatment and complicated procedures.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A dark-color polyester fabric post-treatment process
  • A dark-color polyester fabric post-treatment process
  • A dark-color polyester fabric post-treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] After degreasing and pre-setting, the polyester fabric falls into the dyeing vat. The pressure in the dyeing vat is 4bar. Add water to soak the polyester fabric and raise the temperature to 40°C. After diluting and mixing the disperse dyes in the auxiliary vat, add the disperse dyes into the dyeing vat. Control the bath ratio to 1:12, so that the temperature of the dyeing liquor is raised to 80°C for the first time at a rate of 2°C / min, then add acetic acid and sodium acetate buffer regulator to adjust the pH of the dyeing liquor to 4.5-4.8, and then increase the temperature at a rate of 1°C / min The rate is raised to 150°C for the second time for dyeing and heat preservation; at the same time, the dyeing tank drain inlet pipe and the hot and humid steam pipe in the first pipe of the plate heat exchanger are opened, and the plate heat exchanger is used for heat exchange, heating and cleaning. The residual liquid in the dyeing vat is cooled from 150°C to 125°C for the firs...

Embodiment 2

[0042] After degreasing and presetting, the polyester fabric falls into the dyeing vat. The pressure in the dyeing vat is 6bar. Add water to soak the polyester fabric and raise the temperature to 40°C. After diluting and mixing the disperse dyes in the auxiliary vat, add the disperse dyes into the dyeing vat. Control the bath ratio to 1:12, so that the temperature of the dyeing liquor is raised to 80°C for the first time at a rate of 2°C / min, then add acetic acid and sodium acetate buffer regulator to adjust the pH of the dyeing liquor to 4.5-4.8, and then increase the temperature at a rate of 1°C / min The rate is raised to 150°C for the second time for dyeing and heat preservation; at the same time, the dyeing tank drain inlet pipe and the hot and humid steam pipe in the first pipe of the plate heat exchanger are opened, and the plate heat exchanger is used for heat exchange, heating and cleaning. Let the residual liquid in the dyeing vat cool down from 150°C to 125°C for the f...

Embodiment 3

[0044] After degreasing and pre-setting, the polyester fabric falls into the dyeing vat. The pressure in the dyeing vat is 5bar. Add water to soak the polyester fabric and raise the temperature to 40°C. After diluting and mixing the disperse dyes in the auxiliary vat, add the disperse dyes into the dyeing vat. Control the bath ratio to 1:12, so that the temperature of the dyeing liquor is raised to 80°C for the first time at a rate of 2°C / min, then add acetic acid and sodium acetate buffer regulator to adjust the pH of the dyeing liquor to 4.5-4.8, and then increase the temperature at a rate of 1°C / min The rate is raised to 150°C for the second time for dyeing and heat preservation; at the same time, the dyeing tank drain inlet pipe and the hot and humid steam pipe in the first pipe of the plate heat exchanger are opened, and the plate heat exchanger is used for heat exchange, heating and cleaning. Make the residual liquid in the dyeing vat cool down from 150°C to 125°C for the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a dark-color polyester fabric post-treatment process, and belongs to the technical field of textile processes. The process comprises the steps of heat exchange and cleaning: specifically, under the pressure of 4-6 bar, wet and hot steam in a dye vat and high-temperature residual liquid contained in the dye vat are used for conducting heat exchange heating on clear water, and the temperature of the clear water to be heated is increased by 4-6 DEG C; and under the pressure of 4-6 bar, the heated clear water is injected into the dye vat to clean dark-color polyester fabric, and the temperature of the clear water is controlled to be 12-16 DEG C lower than the temperature of the residual liquid of the dye vat. The dark-color polyester fabric produced by the method can achieve the color stability and color fastness which can be achieved by a traditional reduction cleaning process; use of caustic soda and sodium hydrosulfite is avoided, electric energy is saved, pollution discharge is reduced, and the process has the advantage of environmental protection.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a post-treatment process for dark-colored polyester fabrics. Background technique [0002] The annual water consumption of my country's textile industry exceeds 10 billion tons, and the waste water discharge ranks sixth among all industries in the country. Among them, the water consumption of the printing and dyeing industry accounts for 80%, about 8 billion tons, and the water consumption per unit of textile quality is 2~2 that of foreign developed countries 3 times, and the unit energy consumption is 3 to 5 times that of theirs, so energy saving, water saving, and emission reduction are urgent issues in the printing and dyeing industry. [0003] Under the condition of ensuring dyeing quality, how to reduce energy consumption and pollution discharge is an important issue of common concern to all textile printing and dyeing enterprises. Traditional disperse dyeing post-dyeing cl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06B21/00D06B23/22D06B9/02D06B23/30
Inventor 周钟鸣
Owner LANGXI YUANHUA TEXTILE
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