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Process for carrying out pretreatment on fabrics

A fabric and process technology, applied in the technical field of fabric pretreatment, can solve the problems of reducing strength, high energy consumption during processing, easy to pilling, etc., and achieve the effects of mild working conditions, reduced energy consumption, and environmental friendliness.

Inactive Publication Date: 2011-05-25
HUAFANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-temperature bleaching process is generally used in the prior art. The disadvantages of this method are: 1. The bleaching temperature of hydrogen peroxide is above 98°C, and the energy consumption in the process is high; 2. The damage to the fiber is increased and the strength is reduced. Iron ions or other heavy metal ions, the damage will be more serious; 3. The fabric is more degreased, which affects the natural lubricity of the fiber, resulting in a rough feel of the fabric and easy pilling

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

[0032] a. The first padding: put the gray cloth washed in hot water into the desizing machine, and add the following reagents in sequence:

[0033] Stabilizer 3g / L

[0034] Alkali agent 4g / L

[0035] Refining enzyme 10g / L

[0036] Activator 0.17g / L

[0037] Concentration is 27.5% hydrogen peroxide 32.7g / L;

[0038] b. Cool the fabric at 40°C for 18 hours;

[0039] c. Wash in hot water at 90°C for 3 times, then wash with cold water at 20°C once, and squeeze water;

[0040] d. The second padding: add the following doses of reagents in the desizing machine in sequence:

[0041] Penetrant 4g / L

[0042] Stabilizer 2g / L

[0043] Activator 4g / L

[0044] Refining agent 18g / L

[0045] The concentration is 27.5% hydrogen peroxide 32.7g / L;

[0046] e. Fabric steaming at 80°C for 1h;

[0047] f. Wash 3 times in hot water at 90°C, wash once in cold water at 20°C, and dry.

Embodiment 2

[0049] a. The first padding: put the gray cloth washed in hot water into the desizing machine, and add the following reagents in sequence:

[0050] Stabilizer 3g / L

[0051] Alkali agent 4g / L

[0052] Refining enzyme 12g / L

[0053] Activator 0.15g / L

[0054] Concentration is 27.5% hydrogen peroxide 32g / L;

[0055] b. Cool the fabric at 40°C for 20 hours;

[0056] c. Wash in hot water at 90°C for 3 times, then wash with cold water at 20°C once, and squeeze water;

[0057] d. The second padding: add the following doses of reagents in the desizing machine in sequence:

[0058] Penetrant 5g / L

[0059] Stabilizer 2g / L

[0060] Activator 4g / L

[0061] Refining agent 20g / L

[0062] The concentration is 27.5% hydrogen peroxide 33g / L;

[0063] e. Fabric steaming at 80°C for 1h;

[0064] f. Wash 3 times in hot water at 90°C, wash once in cold water at 20°C, and dry.

Embodiment 3

[0066] a. The first padding: put the gray cloth washed in hot water into the desizing machine, and add the following reagents in sequence:

[0067] Stabilizer 2g / L

[0068] Alkali agent 3g / L

[0069] Refining enzyme 8g / L

[0070] Activator 0.1g / L

[0071] Concentration is 27.5% hydrogen peroxide 30g / L;

[0072] b. Cool the fabric at 40°C for 18 hours;

[0073] c. Wash 4 times in hot water at 80°C, then wash once in cold water at 20°C, and squeeze water;

[0074] d. The second padding: add the following doses of reagents in the desizing machine in sequence:

[0075] Penetrant 3g / L

[0076] Stabilizer 1g / L

[0077] Activator 3g / L

[0078] Refining agent 15g / L

[0079] Concentration of 27.5% hydrogen peroxide 30g / L;

[0080] e. Fabric steaming at 70°C for 1.2h;

[0081] f. Wash 4 times in hot water at 80°C, wash once in cold water at 20°C, and dry.

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 relates to a process for carrying out pretreatment on fabrics in printing and dyeing industries, in particular relating to a process for simultaneously carrying out desizing, scouring and bleaching on fabrics. The process provided by the invention comprises the following steps of primary padding, fabric cooling in pile, hot water rinsing, clod water rinsing, squeezing, second padding, fabric steaming, hot water rinsing, clod water rinsing, and drying. Because the fabrics are pretreated by using the process, the energy consumption is reduced, and the process is environment-friendly; and because in the process, biological enzymes are adopted to act on the fabrics, the action has a mild condition and causes no damage on the fabrics, and the wettability, impurity removal rate and whiteness of the obtained fabrics are much higher than those of the fabrics subjected to alkali treatment.

Description

technical field [0001] The invention relates to a pretreatment process for fabrics in the printing and dyeing industry, in particular to a process for synchronously desizing, scouring and bleaching the fabrics. Background technique [0002] In the printing and dyeing process, the size on the warp yarn must be desized to make the dyeing material fully contact with the fiber and reduce the consumption of dyeing material. Most printing and dyeing manufacturers use alkali desizing to remove the size on the fabric. The desizing rate of this method is low, generally 50-70%, and the remaining size will be further removed by scouring. Another major disadvantage of alkali desizing is that it is difficult to control the washing after desizing. Alkali desizing cannot destroy the macromolecules of the size. [0003] The scoured fabric also needs to remove the residual cottonseed hulls, remove the pigment, and improve the whiteness, so the fabric must be bleached. The high-temperature ...

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): D06M16/00C12S11/00D06L3/02D06L3/11D06L1/00D06L1/12D06L1/16D06L4/12D06L4/13
Inventor 王力民罗维新李风明闫英山李春光吕建品张万伟李玉华姚永旺孙臣王旭洲孙红玉
Owner HUAFANG
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