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Method for dyeing gray fabric

The technology of grey cloth and coarse cloth, applied in the field of dyeing, can solve the problems of waste of grey cloth, increase of cost, increase of trial and error cost, etc., and achieve the effect of avoiding waste of steam, reducing usage amount and avoiding temperature change.

Pending Publication Date: 2022-07-15
SHANTOU DINGTAIFENG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be cooled naturally during the cooling process, but the heating needs to use steam to heat the water, which means that a complete dyeing process needs to adopt multiple heating and cooling procedures, and the heating rate needs to be controlled to ensure the success rate of dyeing. After preliminary According to statistics, the amount of steam used per ton of cloth reaches 2.7 tons, which greatly increases the cost
In many experiments, if water sources of different temperatures are used for dyeing, and the modification of other processes is involved, the trial and error cost of multiple attempts will also increase greatly. If the dyeing fails, it means the waste of gray cloth

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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  • Method for dyeing gray fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Soak the grey cloth in water at 50°C for 20min, and control the bath ratio to be 1:12; after soaking, add glacial acetic acid at a dosage of 1.4g / L, then continue to wash for 30min, and obtain the coarse cloth after washing.

[0053]The coarse cloth, dye and sodium carbonate are mixed and placed in water at 50°C, the bath ratio is controlled to 1:8, the amount of dye added is 1.3% (omf), the amount of sodium carbonate added is 12g / L, and the time is 15min; After dyeing, place the treated fabric in water at 52°C, with the bath ratio unchanged, and soak for 20 minutes to complete the middle dyeing; then place the middle dye in water at 60°C, add glacial acetic acid in an amount of 2g / L, and control The liquor ratio is 1:13, and the time is 25 minutes to complete the final dyeing, and the semi-finished cloth is obtained.

[0054] Wash the semi-finished cloth for the first time, the water temperature is 50 ℃, the time is 13min, and the bath ratio is 1:11; The ratio is 1:3;...

Embodiment 2

[0057] Soak the grey cloth in water at 53°C for 18 minutes, and control the bath ratio to be 1:12.5; after the soaking, add glacial acetic acid according to the dosage of 1.3g / L, and then continue to wash for 25 minutes. After washing, the coarse cloth is obtained.

[0058] The coarse cloth, dye and sodium carbonate were mixed and placed in water at 45°C, the bath ratio was controlled to be 1:9, the addition amount of dye was 1.4% (omf), the addition amount of sodium carbonate was 11g / L, and the time was 10min; After dyeing, put the treated fabric in water at 55°C, the bath ratio is unchanged, and soak for 23 minutes to complete the middle dyeing; then arrange the middle dyeing in water at 58°C, and add glacial acetic acid at a dosage of 1 g / L to control the dyeing process. The liquor ratio is 1:12.5, and the time is 30 minutes to complete the final dyeing, and the semi-finished cloth is obtained.

[0059] Wash the semi-finished cloth for the first time, the water temperature ...

Embodiment 3

[0062] Soak the grey cloth in water at 46°C for 15 minutes, and control the bath ratio to be 1:13; after soaking, add glacial acetic acid in an amount of 1 g / L, then continue to wash for 20 minutes, and obtain coarse cloth after washing.

[0063] The coarse cloth, dye and sodium carbonate were mixed and placed in water at 42°C. After dyeing, place the treated fabric in water at 50°C, with the bath ratio unchanged, and soak for 25 minutes to complete the middle dyeing; then place the middle dye in water at 60°C, add glacial acetic acid at a dosage of 3 g / L, and control The liquor ratio is 1:13, and the time is 20 minutes to complete the final dyeing, and the semi-finished cloth is obtained.

[0064] Wash the semi-finished cloth for the first time, the water temperature is 48°C, the time is 13min, and the bath ratio is 1:11; The ratio is 1:3; the cloth obtained from the first washing and the soaping agent are mixed for soaping. The amount of the soaping agent is 5.2g / L, the bat...

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 belongs to the technical field of dyeing. The invention provides a gray fabric dyeing method. The method comprises the following steps: pre-treating and washing grey cloth and glacial acetic acid to obtain coarse cloth; dyeing the coarse cloth to obtain semi-finished cloth; the semi-finished product cloth is sequentially subjected to first-time water washing, soaping and second-time water washing, and dyeing is completed. The method has the key points that hot water sources for pretreatment washing, dyeing, primary washing, soaping and secondary washing are independent, and different initial hot water is adopted for the treatment, so that not only can the grey cloth be better colored, but also the use amount of steam in the dyeing process can be reduced. The fixed hot water source is adopted for the process in each stage, specific parameters are matched, temperature change and steam waste are avoided, high-quality dyed cloth can be obtained while the cost is reduced, and the process is mature and suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a method for dyeing grey fabrics. Background technique [0002] When dyeing grey fabrics, the same hot water source is often used; however, each stage of the dyeing process has different temperature requirements, so it is necessary to heat up and cool down the water source. Natural cooling is possible during the cooling process, but the heating needs to use steam to heat the water, which means that a complete dyeing process needs to use multiple heating and cooling procedures, and the heating rate needs to be controlled to ensure the success rate of dyeing. Statistics show that the amount of steam used per ton of cloth reaches 2.7 tons, which greatly increases the cost. In many experiments, if water sources of different temperatures are used for dyeing, and the modification of other processes is involved, the trial and error cost of repeated attempts will also increase greatly. I...

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): D06P1/653D06L1/16D06B21/00
CPCD06P1/6533D06L1/16D06B21/00
Inventor 田剑黄灿楷黄鸿楷陈荣洪
Owner SHANTOU DINGTAIFENG IND