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Two-bath dyeing process

A two-bath method and process technology, which is applied in the field of fabric dyeing, can solve the problems of sewage treatment that cannot meet the standard discharge, high COD of wastewater, and use of caustic soda.

Inactive Publication Date: 2016-07-20
JINHUA ZHICHAN MAOYUAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method of dyeing blended fabrics consumes a lot of energy and causes serious pollution. The water consumption per ton of fabric in most dyeing factories is above 1:100
Most of the dyeing process adopts the intermittent production of dyeing machines from pretreatment to soft finishing. The liquor ratio is about 1:80, and the technology is backward. Large amount of repair, more water consumption; more caustic soda used, high COD of wastewater, sewage treatment can not meet the discharge standards

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, for wool fiber dyeing, put the blended fabric into the dyeing container, add the dyeing auxiliaries and dyes prepared in step (4) into the dyeing container at room temperature, keep it warm at room temperature for 15-25min, and then heat it at 0.8-1.2°C / The heating rate of min is to raise the temperature to 95-98°C and keep it warm for 40-60min, and then wash it. After cleaning, add soda ash for the first time and control the pH value of the water bath, then raise the temperature to 80-85°C and keep it warm for 25-35min, then wash again After cleaning again, add soda ash for the second time and control the pH value, then raise the temperature to 80-85°C and keep it warm for 25-35min again, then wash, finally add glacial acetic acid and heat it up to 40-45°C and keep it warm for 10-20min, and then After the heat preservation is completed, add a softener for softening treatment, and leave the cylinder to obtain dyed wool fibers; then dye the polylactic acid fibers....

Embodiment 2

[0039] A kind of two-bath method dyeing process, carries out according to the following steps:

[0040]First, for wool fiber dyeing, put the blended fabric into the dyeing container, add dyeing auxiliaries and dyes into the dyeing container at room temperature, keep it warm at room temperature for 15-25 minutes, and then raise the temperature to 95 at a heating rate of 0.8-1.2°C / min. -98°C and keep warm for 40-60min, then wash, after cleaning, add soda ash for the first time and control the pH value of the water bath, then raise the temperature to 80-85°C and keep warm for 25-35min, wash again, and then wash again Add soda ash for the first time and control the pH value, then raise the temperature to 80-85°C and keep it warm for 25-35min again, then wash it, finally add glacial acetic acid and raise the temperature to 40-45°C and keep it warm for 10-20min, then add softener after the heat preservation is over treatment, out of the vat, to obtain dyed wool fibers; then dye 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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PUM

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Abstract

The invention relates to two-bath dyeing process. The two-bath dyeing process includes: dyeing wool fibers, to be more specific, placing blended fabric in a dyeing container, adding dyeing auxiliaries and dye prepared in the fourth step into the dyeing container under normal temperature to obtain dyed wool fibers; dyeing polylactic acid fibers, to be more specific, placing a barrel loaded with blended fabric into the dyeing container, adding dyeing auxiliaries, and using glacial acetic acid and color fixing agent to fix the color so as to obtain the dyed polylactic acid fibers. The two-bath dyeing process has the advantages that water is saved effectively, pollution is reduced effectively, and high color fastness is achieved.

Description

technical field [0001] The invention relates to the field of fabric dyeing, in particular to a two-bath dyeing process. Background technique [0002] Energy conservation, emission reduction, consumption reduction, and environmental protection are the strategies to realize the sustainable development of the textile industry. The printing and dyeing link is the top priority for the entire textile industry to achieve energy conservation and emission reduction. The success of dyeing and finishing energy-saving technology is the most direct and effective energy-saving emission reduction. Engineering is the core of corporate profits, and it is also a systematic project to improve product quality and product grade. Improving energy-saving and water-saving technologies in dyeing and finishing is the common expectation of dyeing and finishing enterprises, and it is a hot spot of research and exploration in the whole country and even in the world. [0003] The existing dyeing method ...

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): D06P1/50D06P1/52D06P1/613D06P1/653D06P1/655D06P1/667D06P1/673D06P3/14D06P3/52D06P5/04D06P5/20
CPCD06P1/50D06P1/525D06P1/6135D06P1/653D06P1/655D06P1/667D06P1/6735D06P1/67383D06P3/14D06P3/52D06P5/04D06P5/2077
Inventor 骆佳豪
Owner JINHUA ZHICHAN MAOYUAN INFORMATION TECH CO LTD
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