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The pre-treatment process of cotton woven fabrics and the formula of desizing working solution

A technology for working fluids and fabrics, applied in physical treatment, fiber treatment, biochemical fiber treatment, etc., can solve problems such as consumption, pollution, waste of water resources and water environment, and achieve the effect of reducing damage and improving desizing

Active Publication Date: 2019-01-08
HANGZHOU DADI PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The textile printing and dyeing industry consumes a large amount of fresh water, discharges a large amount of pollutants, and causes great waste and pollution to water resources and the water environment.

Method used

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  • The pre-treatment process of cotton woven fabrics and the formula of desizing working solution
  • The pre-treatment process of cotton woven fabrics and the formula of desizing working solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: a kind of printing and dyeing pretreatment process of cotton woven fabric, comprises the following steps:

[0061] S1, singeing. After the cloth is brushed, it passes through the gas singeing machine at a speed of 60-150m / min. The flame temperature of the gas singeing machine is 800-900°C. The speed depends on the thickness of the cloth. The thicker the cloth, the slower the speed. The specific speed and flame temperature are checked after singeing to see whether the fluff is burned cleanly and does not affect the fabric body. In this embodiment, the speed is 100m / min, and the flame temperature is 950°C;

[0062] S2, desizing, including 6 stages of rinsing with decreasing concentration of the working solution, followed by 1 stage rinsing, 2 stage rinsing, 3 stage rinsing, 4 stage rinsing, 5 stage rinsing and 6 stage rinsing. The concentration of the working solution is the highest, the concentration of the working solution for the second rinse is 80% of th...

Embodiment 2

[0081] Example 2: The difference from Example 1 is that the desizing step of S2 includes 4 stages of rinsing, followed by 1 stage rinsing, 2 stage rinsing, 3 stage rinsing and 4 stage rinsing, wherein, in the 1 stage rinsing The concentration of the working solution is the highest, the concentration of the working solution for the second rinse is 60% of the concentration of the working solution in the first rinse, the concentration of the working solution for the third rinse is 30% of the concentration of the working solution in the first rinse, and the concentration of the working solution for the fourth rinse The solution concentration is 10% of the working solution concentration in the first-level rinse, the working solution concentration in the fifth-level rinse is 20% of the working solution concentration in the first-level rinse, and the working solution concentration in the sixth-level rinse is the smallest and equal to the first-level rinse. 10% of the working solution ...

Embodiment 3

[0082] Example 3: The difference from Example 1 is that the desizing step of S2 includes 2-stage rinsing, followed by 1-stage rinsing and 2-stage rinsing, wherein the concentration of the working solution in the 1-stage rinsing is the largest, and the 2-stage rinsing The concentration of the working solution is 50% of the concentration of the working solution in the first-level rinse.

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PUM

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Abstract

The invention discloses a dyeing and printing pretreatment process for a cotton woven fabric and a desizing working solution formula. The dyeing and printing pretreatment process for the cotton woven fabric comprises the following three processes: singeing, desizing and alkali peeling, wherein the desizing step comprises the following sub-steps: performing 2-6-level rinsing by working solution of which the concentration is decreased progressively sequentially, and sequentially rinsing the singed grey cloth by high-concentration working solution and low-concentration working solution sequentially; the alkali peeling comprises multi-level alkaline liquor in which NaOH concentration is decreased progressively sequentially, and the grey cloth in the step S2 is sequentially subjected to alkali peeling; trough inverting is performed when the processes of desizing and alkali peeling reach the upper limit; the trough inverting step comprises the sub-steps: discharging the working solution or alkaline liquor with the highest concentration for recycling, and pouring the low-concentration working solution or alkaline liquor into working solution or alkaline liquor with higher level concentration. Clean water is supplemented into the original potcher with the lowest concentration, and the concentration of the working solution in each potcher is blended. The process has the advantages of water conservation and emission reduction.

Description

technical field [0001] The invention relates to the field of cloth printing and dyeing technology, in particular to a printing and dyeing pretreatment process of cotton woven fabrics and a desizing working solution formula. Background technique [0002] Since the 21st century, with the depletion of resources and the deterioration of the environment, people have paid more and more attention to the sustainable use of resources and the environment and their supporting role in the development of the national economy. Water is one of the most important natural resources and the basic element of the ecological environment. At present, my country's water resources are in short supply on the one hand and serious water pollution on the other hand. [0003] Textile printing and dyeing industry is one of the traditional industrial sectors in our country, which is labor-intensive, resource and energy consuming industry. my country's printing and dyeing industry is concentrated in 5 pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L1/14D06L1/16D06L1/20D06L4/13D06M16/00D06M10/06D06M101/06
CPCD06L1/14D06L1/16D06L1/20D06M10/06D06M16/00
Inventor 朱思火
Owner HANGZHOU DADI PRINTING & DYEING CO LTD
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