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Cotton knitted fabric printing and dyeing process

A printing and dyeing process, cotton knitting technology, applied in the field of textile printing and dyeing, can solve the problems of insufficient dyeing rate and fixation rate, and achieve the effects of improving dyeing rate and fixation rate, improving printing and dyeing effect, increasing level dyeing and penetration dyeing Effect

Inactive Publication Date: 2020-12-29
HANGZHOU HONGJIANG TEXTILE DYEING PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cotton fabric printing and dyeing process of the invention effectively increases the dyeing rate of the pure cotton fabric by changing the dye molecules to pre-treat the cotton fabric; however, the invention still has the problem that the dyeing rate and the fixation rate are not high enough

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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  • Cotton knitted fabric printing and dyeing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A cotton knitted fabric printing and dyeing process, comprising the following steps:

[0038] S1: The pretreatment stage includes activation treatment and cationic reagent modification;

[0039] S11: activation treatment,

[0040] 1) Use sodium hydroxide to prepare an activation solution with a concentration of 0.2 / mL;

[0041] 2) Immerse the fabric in the activation solution, and soak it for 1 hour under stirring; then, use hydrochloric acid solution to adjust the pH of the activation solution to 0.65; after that, take the fabric out, roll it dry, and dry it at 80°C for 5 minutes, Obtain activated cotton fiber fabric.

[0042] S12: Cationic reagent modification, including primary modification and secondary modification;

[0043] 1. One-time modification, preparation concentration is the betaine solution of 2wt%, and adds sodium hypophosphite monohydrate, makes cationic modification liquid 1, and the weight ratio of sodium hypophosphite monohydrate and betaine is 4: ...

Embodiment 2

[0053] A cotton knitted fabric printing and dyeing process, comprising the following steps:

[0054] S1: The pretreatment stage includes activation treatment and cationic reagent modification;

[0055] S11: activation treatment,

[0056] 1) Use sodium hydroxide to prepare an activation solution with a concentration of 0.25 / mL;

[0057] 2) Immerse the fabric in the activation solution and soak it for 1.5 hours under stirring; then, adjust the pH of the activation solution to 0.7 with hydrochloric acid solution; after that, take out the fabric, roll it dry, and dry it at 80°C for 5 minutes , to obtain activated cotton fiber fabric.

[0058] S12: Cationic reagent modification, including primary modification and secondary modification;

[0059] 1. primary modification, preparation concentration is the betaine solution of 5wt%, and adds dicyandiamide, makes cationic modification liquid 1, and the weight ratio of dicyandiamide and betaine is 4.5: 100; Then, the obtained in step S...

Embodiment 3

[0069] A cotton knitted fabric printing and dyeing process, comprising the following steps:

[0070] S1: The pretreatment stage includes activation treatment and cationic reagent modification;

[0071] S11: activation treatment,

[0072] 1) Use sodium hydroxide to prepare an activation solution with a concentration of 0.3 / mL;

[0073] 2) Immerse the fabric in the activation solution and soak for 2 hours under stirring; then, adjust the pH of the activation solution to 0.75 with hydrochloric acid solution; after that, take the fabric out, roll it dry, and dry it at 80°C for 5 minutes, Obtain activated cotton fiber fabric.

[0074] S12: Cationic reagent modification, including primary modification and secondary modification;

[0075] 1. primary modification, preparation concentration is the betaine solution of 8wt%, and adds sodium hypophosphite monohydrate, makes cationic modification liquid 1, and the weight ratio of sodium hypophosphite monohydrate and betaine is 5: 100; T...

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 the technical field of textile printing and dyeing, and particularly discloses a cotton fiber fabric printing and dyeing process. The process comprises the following steps ofS1, enabling a pretreatment stage to comprise activation treatment and cationic reagent modification; S11, activating treatment, namely preparing an activating solution by adopting strong base, and immersing the fabric into the activating solution for activating treatment; S12, cation reagent modification, namely immersing the activated fabric into a cation modification solution to carry out cation modification treatment; S2, a dyeing stage, namely dyeing the fabric obtained in the step S12 by adopting an anionic reactive dye solution; and S3, a color fixing stage, namely immersing the fabricinto a color fixing solution containing coupling agent modified nano-zinc oxide for color fixing. The printing and dyeing process disclosed by the invention has the advantage of improving the dye-uptake and fixation rate of the reactive dye.

Description

technical field [0001] The invention relates to the technical field of textile printing and dyeing, more specifically, it relates to a cotton knitted fabric printing and dyeing process. Background technique [0002] Cotton fabric has good properties such as moisture absorption, breathability, and warmth retention. It is one of the most widely used fibers in natural fibers. It is mainly used in the field of clothing, and is also used to prepare sofa fabrics, curtain fabrics, other decorative fabrics, and bedding. [0003] Traditional cotton fabric dyeing is mainly dyed with direct dyes, and the soaping fastness of the dyed cotton fabric is low. Therefore, in recent years, in order to improve the soaping fastness of cotton fabrics, reactive dyes are generally used for dyeing. Reactive dyes can chemically react with cotton fabrics and graft on fabrics with covalent bonds, so the soaping fastness is relatively high. However, because the cotton fiber is negatively charged in th...

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): D06P1/38D06P1/52D06P1/66D06P1/673D06P3/66D06P5/10
CPCD06P1/38D06P3/66D06P1/6735D06P1/66D06P5/10D06P1/5242
Inventor 施海锋朱建华
Owner HANGZHOU HONGJIANG TEXTILE DYEING PRINTING
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