Black knitted fabric vat-replenishing dyeing process

A knitted fabric and black technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of wasting dyes and auxiliaries, increasing the burden of wastewater treatment, losing water and heat, etc., achieving stable coloring, improving dyeing rate and solidity Color rate, enhance the effect of color fixation rate

Active Publication Date: 2019-12-27
花法科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of salt and alkali should be added during the dyeing process. The raffinate after dyeing contains a large amount of auxiliary agents and dyes that may not have been hydrolyzed. If the dye solution is discharged at this time. While wasting dyes and auxiliaries. It also loses a lot of water and heat, and increases the burden of wastewater treatment

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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  • Black knitted fabric vat-replenishing dyeing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A continuous cylinder dyeing process for black knitted fabrics, comprising the following steps:

[0023] S1 Knitted fabric ingredients: fully soak 600kg of pre-treated knitted fabric at a temperature of 35°C for 10 minutes, and add 600*8=4800L of clean water to the dyeing machine according to the preset liquor ratio of 1:8;

[0024] S2 Dyeing pretreatment: raise the temperature of the above-mentioned dyeing machine to the first set temperature at a heating rate of 3°C / min, then add 80g / L salt, 20g / L accelerator, and 2g / L leveling agent to run for 15min;

[0025] S3 dyeing: add 20g / L black reactive dye to the above dyeing machine, run it for 10min, then raise the temperature of the dyeing machine to the second set temperature at a heating rate of 1°C / min, keep it warm for 30min, and obtain the black knitted fabric dyed for the first time ;

[0026] S4 Continue dyeing cloth: 80g / L*900L=72kg salt, 20g / L*900L=18kg accelerator, 2g / L*900L=1.8kg leveling agent, 20g / L*900L*0.8...

Embodiment 2

[0033] A continuous cylinder dyeing process for black knitted fabrics, comprising the following steps:

[0034] S1 Knitted fabric ingredients: fully soak 700kg of pre-treated knitted fabric for 13 minutes at a temperature of 37°C, and add 5600L of clean water to the dyeing machine;

[0035] S2 Dyeing pretreatment: raise the temperature of the above dyeing machine to the first set temperature at a heating rate of 3°C / min, then add 80g / L salt, 20.2g / L accelerator and 2.2g / L leveling agent and run for 15min ;

[0036] S3 dyeing: add 20g / L black reactive dye to the above dyeing machine, run it for 10min, then raise the temperature of the dyeing machine to the second set temperature at a heating rate of 1°C / min, keep it warm for 30min, and obtain the black knitted fabric dyed for the first time ;

[0037] S4 Continuing Dyeing Cloth: Through calculation, add 84kg of salt, 21.21kg of accelerator, 2.31kg of leveling agent, 15.12kg of black reactive dye and 1050L of clean water to ad...

Embodiment 3

[0044] A continuous cylinder dyeing process for black knitted fabrics, comprising the following steps:

[0045] S1 Knitted fabric ingredients: fully soak 800kg of pre-treated knitted fabrics at a temperature of 40°C for 17 minutes, and add 6400L of clean water to the dyeing machine;

[0046] S2 Dyeing pretreatment: raise the temperature of the above dyeing machine to the first set temperature at a heating rate of 3°C / min, then add 80g / L salt, 20.4g / L accelerator and 2.4g / L leveling agent and run for 18min ;

[0047] S3 Dyeing: Add 20kg / L black reactive dye to the above dyeing machine, run it for 18 minutes, then raise the temperature of the dyeing machine to the second set temperature at a heating rate of 1°C / min, keep it warm for 37 minutes, and obtain the black knitted fabric dyed for the first time ;

[0048] S4 Continuing Dyeing Cloth: Through calculation, add 96kg of salt, 24.48kg of accelerator, 2.88kg of leveling agent, 17.28kg of black reactive dye and 1200L of clean...

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 black knitted fabric vat-replenishing dyeing process and belongs to the technical field of knitted fabric dyeing processes. The dyeing process includes following steps: fullysoaking knitted fabric after being pretreated into a dyeing machine, rising temperature to first set temperature at a temperature rising rate of 3 DEG C / min, adding salt with concentration identicalwith starting bath dye liquid, a promoter and a leveling agent, and running for 15-20min; adding black active dye into the dyeing machine, running for 10-25min, rising the temperature of the dyeing machine to second set temperature at a temperature rising rate of 1 DEG C / min, holding the temperature for 30-45min, adding starting bath water after being supplemented for redyeing in a standing vat, rising temperature in the standing vat to 58 DEG C at a temperature rising rate of 2 DEG C / min, holding the temperature for 30-45min, and taking cloth out. The dyeing process has the advantages of highdyeing rate, strong color fastness and capability of realizing energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of knitted fabric dyeing technology, and in particular relates to a continuous cylinder dyeing process of black knitted fabric. Background technique [0002] Reactive dyes have been widely concerned because of their good diffusivity, complete chromatogram, good fastness, bright color, relatively cheap price, simple application process, etc., and can form covalent bonds with many fibers. In the dyeing process of reactive dyes, the alkali agent and its dosage are the main influencing factors. The active groups in the reactive dye molecules are conducive to the reaction and combination with the cellulose fiber under alkaline conditions. At the same time, the presence of alkali will also cause the dye to be hydrolyzed. and fail. In the traditional process, soda ash is used to fix the color. Soda ash has strong buffering properties. The pH value in the aqueous solution within a relatively wide range of unit conc...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/00D06P1/642D06P1/645D06P1/651D06P1/44
CPCD06P1/38D06P1/67383D06P1/0032D06P1/6424D06P1/6735D06P1/645D06P1/65156D06P1/445
Inventor 付春林王忠孔令豪
Owner 花法科技有限公司
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