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Reductive dye dyeing process for all-cotton fabric

A technology for cotton fabrics and dyes, used in dyeing methods, textiles and papermaking, dry-cleaning fiber products, etc., can solve the problems that cannot meet high temperature washing, chlorine bleaching fastness, reactive dyeing fabrics have poor color fastness, and affect dyed products. Development and other issues, to achieve the effect of good dyeing effect, fastness to chlorine bleaching, and improved product quality

Inactive Publication Date: 2016-11-16
安徽融创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the dyeing industry, cotton fibers dyed with reactive dyes are challenged by energy shortages such as water resources. At the same time, due to the structural characteristics of reactive dyes, some reactive dyed fabrics have relatively poor color fastness, so they cannot meet the requirements specified by customers. High temperature washing resistance, chlorine bleaching fastness, etc., thereby reducing product quality and ultimately affecting the development of yarn-dyed products

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

[0021] A kind of vat dye dyeing process of cotton fabric, comprises the following steps:

[0022] (1) Dyeing: first place the cotton fabric in water, then heat the water to 80°C, add vat dyes, and keep warm for 20 minutes;

[0023] (2) Add auxiliary agent: in the aqueous solution of described cotton fabric, add auxiliary agent, described auxiliary agent comprises caustic soda, hydrosulfite, dispersant, the consumption of described caustic soda is 20g per liter of water, the consumption of described hydrosulfite For every liter of water 5g, the consumption of described dispersant is every liter of water 1g;

[0024] (3) heat preservation: heat preservation of the cotton fabric processed in step (2), the heat preservation temperature is 60°C, and the heat preservation time is 50min;

[0025] (4) Washing: washing the cotton fabric treated in step (3), the washing temperature is 60°C, and the washing time is 3 minutes;

[0026] (5) Oxidation treatment: adopt the pre-oxidation me...

Embodiment 2

[0029] A kind of vat dye dyeing process of cotton fabric, comprises the following steps:

[0030] (1) Dyeing: first place the cotton fabric in water, then heat the water to 80° C., add vat dyes, and keep warm for 30 minutes;

[0031] (2) Add auxiliary agent: in the aqueous solution of described cotton fabric, add auxiliary agent, described auxiliary agent comprises caustic soda, hydrosulfite, dispersant, the consumption of described caustic soda is 60g per liter of water, the consumption of described hydrosulfite For every liter of water 20g, the consumption of described dispersant is every liter of water 1g;

[0032] (3) heat preservation: heat preservation of the cotton fabric processed in step (2), the heat preservation temperature is 70°C, and the heat preservation time is 50min;

[0033] (4) Washing: washing the cotton fabric treated in step (3), the washing temperature is 65°C, and the washing time is 3-5min;

[0034] (5) Oxidation treatment: adopt the pre-oxidation me...

Embodiment 3

[0037] A kind of vat dye dyeing process of cotton fabric, comprises the following steps:

[0038] (1) Dyeing: first place the cotton fabric in water, then heat the water to 80° C., add vat dyes, and keep warm for 30 minutes;

[0039] (2) Add auxiliary agent: in the aqueous solution of described cotton fabric, add auxiliary agent, described auxiliary agent comprises caustic soda, hydrosulfite, dispersant, the consumption of described caustic soda is 60g per liter of water, the consumption of described hydrosulfite For every liter of water 20g, the consumption of described dispersant is every liter of water 1g;

[0040] (3) heat preservation: heat preservation of the cotton fabric processed in step (2), the heat preservation temperature is 70°C, and the heat preservation time is 50min;

[0041] (4) Washing: washing the cotton fabric treated in step (3), the washing temperature is 60°C, and the washing time is 3 minutes;

[0042] (5) Oxidation treatment: adopt the pre-oxidation...

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 discloses a reductive dye dyeing process for an all-cotton fabric. The reductive dye dyeing process comprises the following steps: first, placing the all-cotton fabric in water; then, heating water to 80 DEG C, adding a reductive dye, and preserving heat; next, adding auxiliary agents into an aqueous solution of the all-cotton fabric, wherein the auxiliary agents comprise caustic soda, sodium dithionite and a dispersing agent, the using amount of the caustic soda is 20 to 60 g for each liter of water, the using amount of the sodium dithionite is 5 to 20 g for each liter of the water, and the using amount of the dispersing agent is 1 g for each liter of the water; later on, preserving the heat, and performing oxidation treatment after water washing treatment; finally, performing soaping. The reductive dye dyeing process for the all-cotton fabric disclosed by the invention has the advantages of good dyeing effect, high-temperature water washing resistance and fastness to chlorine-bleaching.

Description

technical field [0001] The invention relates to the technical field of vat dye dyeing in the textile industry, in particular to a vat dye dyeing process for cotton fabrics. Background technique [0002] Cotton fabric is a natural cellulose fiber that is popular among consumers. However, in the dyeing industry, cotton fibers dyed with reactive dyes are challenged by energy shortages such as water resources. At the same time, due to the structural characteristics of reactive dyes, some reactive dyed fabrics have relatively poor color fastness, so they cannot meet the requirements specified by customers. High temperature washing resistance, chlorine bleaching fastness, etc., thereby reducing product quality and ultimately affecting the development of yarn-dyed products. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a vat dye dyeing process for cotton fabrics, which has the advantages of good dyeing effect, high tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/22D06P1/44D06P1/673D06P3/60D06L1/16
CPCD06P1/22D06L1/16D06P1/222D06P1/445D06P1/6735D06P3/6025
Inventor 王洪卫徐卉香李振蒋大为高鸿宇郭元
Owner 安徽融创化工科技股份有限公司
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