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Pre-processing, polishing and dyeing one-bath process for cotton knitted fabric

A technology of cotton knitted fabrics and craftsmanship, which is applied in the field of knitted fabric printing and dyeing, which can solve the problems of hard hand feeling, light coloring, and dull dyeing shade, etc., achieve the effects of small fiber strength damage, reduce processing procedures, and improve production efficiency

Inactive Publication Date: 2012-06-20
ZHEJIANG FURUN DYEING & PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that if this kind of one-bath scouring agent for scouring and dyeing is used alone, the dyeing shade will be dull, the color will be light, and the fabric will feel hard. remove

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

[0015] Fabric type: 21s pure cotton knitted jersey (dyed with medium color)

[0016] Equipment used: overflow machine

[0017] The one-bath process of pretreatment, polishing and dyeing mainly includes the following steps: add knitted gray fabric and water into the cylinder, the bath ratio is 1:10, add 1g / L buffer solution, add 2g / L scouring penetrant after running for 5min, and heat up to 55°C, add 0.5g / L pectinase NP and 0.5g / L neutral cellulase CTA-901 in turn, keep warm for 20min, then add 2% owf reactive dye red EX-D in two intervals of 10min, keep warm After 10 minutes, add 40g / L sodium sulfate in two intervals of 10 minutes, keep warm for 15 minutes and then raise the temperature to 60°C, add 15g / L soda ash in two intervals of 10 minutes, keep warm for 30 minutes, drain, soap and water.

[0018] Among them, the formula of refining penetrant is: 2-2-2-octyl maleate sodium sulfonate, 10% Pingpinga OS-15, 10% secondary alcohol-9, and 60% water.

[0019] The components an...

Embodiment 2

[0021] Fabric type: 21s pure cotton knitted terry cloth (dyed dark)

[0022] Equipment used: overflow machine

[0023] The one-bath process of pretreatment, polishing, and dyeing mainly includes the following steps: add knitted gray fabric and water into the machine cylinder, the bath ratio is 1:10, add 1.2g / L buffer solution, and add 1.5g / L scouring penetrant after running for 6 minutes. Raise the temperature to 60°C, add 1g / L pectinase NP and 1g / L neutral cellulase CTA-901 in turn, keep warm for 30min, then add 8% owf reactive dye super black G in two intervals of 10min, keep warm for 10min Finally, add 80g / L sodium hydroxide in two intervals of 10 minutes, keep warm for 15 minutes, then heat up to 65°C, add 20g / L soda ash at intervals of 10 minutes, keep warm for 40 minutes, drain, soap and wash with water.

[0024] Among them, the formula of refining penetrant is: 40% sodium di-sec-octyl sulfonate maleate, 155% Pingpinga OS-155%, 95% secondary alcohol, and 50% water.

[...

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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PUM

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Abstract

The invention relates to a pre-processing, polishing and dyeing one-bath process for cotton knitted fabric; the pre-processing, polishing and dyeing one-bath process comprises the following steps of: processing the cotton knitted fabric by adopting pectinase, neutral cellulase, a refined penetrating agent and a buffer solution, removing a part of or all pectin, wax, oil stains, ash contents and other impurities affecting the dyeing performance on the knitted fabric, endowing the fabric with good wettability and then carrying out a conventional reactive dye dyeing process. As a method of combining biological enzyme and a chemical assistant is adopted, the fabric is deeply colored and has good hand feeling. The pre-processing, polishing and dyeing one-bath process provided invention has the beneficial effects that as the three procedures, i.e. processing, polishing and dyeing the cotton knitted fabric are combined into one bath, the processing procedure is reduced, the production efficiency is improved, the high-temperature treatment is avoided, and the wastewater discharge quantity is reduced; and moreover, the requirements of energy conservation and emission reduction in the dyeing industry are satisfied.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing of knitted fabrics, in particular to a one-bath process of pretreatment, polishing and dyeing of cotton knitted fabrics. Background technique [0002] Cotton knitted fabrics generally require pretreatment before dyeing, the purpose of which is to remove impurities on the fabric. These impurities include non-cellulose substances in cotton fibers (such as pectin, wax, ash, oil stains, etc.). If these impurities are not removed cleanly, it will inevitably affect the dyeing effect, and problems such as light color, color stains, color spots and hard hand are likely to occur. [0003] The traditional cotton knitted fabric dyeing and finishing process requires multi-bath and multi-step processing. The process flow is: cotton gray cloth→pretreatment, draining→hot water washing, draining→neutralization, oxygen removal, draining→polishing, draining→ Washing, draining → dyeing, draining → soap...

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): D06M16/00C12S11/00D06P3/66D06M13/256D06M13/207D06M11/71D06M101/06
Inventor 顾正兴李浩武
Owner ZHEJIANG FURUN DYEING & PRINTING
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