A rapid alkali-free scouring, bleaching, cleaning, dyeing and finishing process for cotton knitting

A cotton knitting and fast technology, applied in the field of dyeing and finishing, can solve the problems of equipment, labor, time, energy waste, etc., achieve good wetting and emulsifying properties, reduce waste water pollution, and reduce damage.

Active Publication Date: 2016-11-02
SHANGHAI JIALE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole process often has to go through at least five steps, resulting in multiple wastes of equipment, labor, time, energy, etc.

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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  • A rapid alkali-free scouring, bleaching, cleaning, dyeing and finishing process for cotton knitting
  • A rapid alkali-free scouring, bleaching, cleaning, dyeing and finishing process for cotton knitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. Fabric: 20STK double yarn + 40STK / 1 double sided fabric

[0052] 2. Formula and conditions of rapid non-alkali scouring and bleaching process:

[0053]

[0054] A. The bath ratio of scouring and bleaching: 1:10, set the water level into the cloth. Add 0.6g / L of Deyouling DM-1130, 4.0g / L of CHT activator FBA and CHT buffer FBA respectively at room temperature, first pour into the auxiliary tank and stir evenly, then add slowly;

[0055] B. High temperature scouring and bleaching: run for 6 minutes after adding the additives used, slowly add 35% hydrogen peroxide 10.0g / L, run for 3 minutes at 2°C per minute to 90°C, keep warm for 40 minutes, and cool to 70°C at 3°C ​​per minute, direct drainage;

[0056] C. Deoxygenation: Warm up to 40°C, add 0.5g / L deoxygenase KAT, keep warm for 10 minutes, drain directly after keeping warm, wash once, and dye;

[0057] D. Precautions: The same amount of CHT activator FBA and CHT buffer FBA can be used in the bleaching bath to a...

Embodiment 2

[0065] 1. Fabric: 32STK / 1SZ+10S / C right twill non-pull fleece

[0066] 2. Formula and conditions of rapid non-alkali scouring and bleaching process:

[0067]

[0068] A. The bath ratio of scouring and bleaching: 1:15, set the water level into the cloth. Add 0.4g / L of Deyouling DM-1130, 2.5g / L of CHT activator FBA and CHT buffer FBA respectively at room temperature, first pour into the auxiliary tank and stir evenly, then add slowly;

[0069] B. High temperature scouring and bleaching: run for 6 minutes after adding the additives used, slowly add 35% hydrogen peroxide 8.0g / L, run for 3 minutes at 2°C per minute to 90°C, keep warm for 30 minutes, and cool to 70°C at 3°C ​​per minute, direct drainage;

[0070] C. Deoxygenation: Warm up to 40°C, add 0.3g / L deoxygenase KAT, keep warm for 10 minutes, drain directly after keeping warm, wash once, and dye;

[0071] D. Precautions: The same amount of CHT activator FBA and CHT buffer FBA can be used in the bleaching bath to achiev...

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 provides a rapid non-alkali scouring and bleaching, cleaning, dyeing and finishing process for a cotton knitted fabric. The process is characterized by comprising the following steps: scouring and bleaching; deoxidizing; washing with water; and dyeing, wherein scouring and bleaching are carried out under a faintly acid or neutral condition; hydrogen peroxide is activated through an activating agent. With the adoption of the process, a plurality of water washing and neutralizing processes can be saved; the processes are decreased; water can be saved; the wastewater pollution degree is particularly greatly reduced; the COD is reduced by more than 10 times that of the traditional process; the process is particularly suitable for preprocessing of high-count, high-density, thick and heavy pure cotton knitted fabrics; the clean production process is completely met; the process is worthy of popularization.

Description

technical field [0001] The invention relates to a dyeing and finishing process, in particular to a fast non-alkali scouring, bleaching and cleaning dyeing and finishing process for cotton knitting. Background technique [0002] At present, a large amount of alkali agents are used in the dyeing and finishing process of cotton fibers, yarns, and fabrics. The traditional process: the pre-treatment of cotton uses hydrogen peroxide plus alkali agents and surfactants for scouring and bleaching. These alkali agents include soda ash (Na 2 CO 3 ), caustic soda (NaOH), baking soda (NaHCO 3 ). [0003] However, the use of a large amount of alkali will cause serious pollution to the environment, and it will cost a lot for alkali neutralization, and it will be degraded at a huge cost to the natural environment. [0004] In addition, in order to ensure the effect of scouring and bleaching, it needs to be subjected to high temperature for a long time. After scouring and bleaching, a la...

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 Patents(China)
IPC IPC(8): D06L3/02D06M16/00D06P3/60D06M101/06D06L4/13
Inventor 于宁杜方东顾成赛杨建国陈建峰詹永宝高庆锋薛海洋马淑琴
Owner SHANGHAI JIALE
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