Shortened wet steaming pad-dyeing technology of all-cotton fabric vat dye

A cotton fabric, short wet steaming technology, applied in the field of printing and dyeing, can solve the problems of whitening of the bottom of cotton fabrics, poor stability of dye dispersions, and high requirements

Active Publication Date: 2016-11-02
ANHUI YAYUAN PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high requirements, the vat dyeing of cotton fabrics by general fluid exhaust dyeing cannot meet this requirement at all.
[0003] This is because, on the one hand, the vat dye itself is insoluble or slightly soluble in water, and the synthesized vat dye particles are relatively large, which cannot be directly used in the printing and dyeing industry. Even after grinding, the dye particles are dispersed, but because the dye particles have The tendency to re-aggregate, so even if a certain dispersion effect is formed, due to the poor stability of the dye dispersion, the level dyeing and color fastness of the vat dye exhaust dyeing process are also poor
On the other hand, in the prior art, cotton and linen fabrics are dyed by "conventional vat dye suspension padding". Customers also cannot accept

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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  • Shortened wet steaming pad-dyeing technology of all-cotton fabric vat dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the present embodiment, a short-wet steam pad dyeing process of cotton fabric vat dyes comprises the following processes:

[0023] S1, padding dyeing solution, according to the bath ratio of 1:5, the cotton fabric is padding dyeing solution, the padding temperature is 40 ° C, the padding rate is 85%, the formula of the dyeing solution includes: dyestuff 25g / L , dispersant 3.0g / L, penetrant T2.0g / L; the formula of described dispersant comprises by weight: 12 parts of sodium lignosulfonate, 10 parts of polyvinylpyrrolidone K-30, nanometer dioxide 3 parts of silicon, 3 parts of sodium sulfite, 10 parts of polyacryl alcohol, 10 parts of Pingpingjiao, 30 parts of water;

[0024] S2, add auxiliary agent, utilize high liquid supply device to supply auxiliary agent, the liquid carrying rate of auxiliary agent on described cotton fabric is 100%, the formula of described auxiliary agent comprises: reducing agent 5g / L, caustic soda 60g / L, chelate dispersant 1g / L; the preparati...

Embodiment 2

[0030] In the present embodiment, a short-wet steam pad dyeing process of cotton fabric vat dyes comprises the following processes:

[0031] S1, padding dyeing solution, according to the bath ratio of 1:10, the cotton fabric is padding dyeing solution, the padding temperature is 20 ℃, and the excess rate is 95%. The formula of the dyeing solution includes: dyestuff 15g / L , dispersant 9.0g / L, penetrant T1.0g / L; The formula of described dispersant comprises by weight: 18 parts of sodium lignosulfonate, 4 parts of polyvinylpyrrolidone K-30, nanometer dioxide 5 parts of silicon, 1 part of sodium sulfite, 20 parts of polyacryl alcohol, 8 parts of Pingping O, 60 parts of water;

[0032] S2, add auxiliary agent, utilize high liquid supply device to supply auxiliary agent, the liquid carrying rate of auxiliary agent on described cotton fabric is 90%, the formula of described auxiliary agent comprises: reducing agent 20g / L, caustic soda 20g / L, chelate dispersant 1.5g / L; the preparatio...

Embodiment 3

[0038] In the present embodiment, a short-wet steam pad dyeing process of cotton fabric vat dyes comprises the following processes:

[0039] S1, padding dyeing solution, according to the bath ratio of 1:7, the cotton fabric is padding dyeing solution, the padding temperature is 30°C, and the padding rate is 90%. The formula of the dyeing solution includes: dye 20g / L , dispersant 6.0g / L, penetrant T1.5g / L; The formula of described dispersant comprises by weight: 15 parts of sodium lignosulfonate, 7 parts of polyvinylpyrrolidone K-30, nanometer dioxide 4 parts of silicon, 2 parts of sodium sulfite, 15 parts of polyacryl alcohol, 9 parts of Pingpingjiao, 45 parts of water;

[0040] S2, add auxiliary agent, utilize high liquid supply device to supply auxiliary agent, the liquid carrying rate of auxiliary agent on described cotton fabric is 95%, the formula of described auxiliary agent comprises: reducing agent 12g / L, caustic soda 40g / L, chelate dispersant 1.2g / L; the preparation ...

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 shortened wet steaming pad-dyeing technology of an all-cotton fabric vat dye. The technology comprises the following steps: 1, padding with the dye: padding an all-cotton fabric with the dye according to a bath ratio of 1:5-10 at 20-40DEG C to make the pickup be 85-95%; 2, adding an assistant: feeding the assistant by using a high-level liquid adding device to make the assistant pickup on the all-cotton fabric be 90-100%; 3, rapidly steaming: rapidly steaming by using saturated steam, wherein the temperature of a steaming box is 90-110DEG C, the humidity of the steaming box is 99-100%, and the steaming time is 1.5-2min; 4, carrying out high-temperature water washing; 5, carrying out oxidation treatment; and 6, soaping. The shortened wet steaming pad-dyeing technology of the all-cotton fabric vat dye has the advantages of good level dyeing property, high color fastness, simple process, environmental protection and healthiness.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing, in particular to a short wet steam pad dyeing process of vat dyes for cotton fabrics. Background technique [0002] Due to its excellent color fastness to rinsing and light, vat dyeing has always been the favorite of people for dyeing cotton products. At present, the demand for cotton and linen fabrics dyed with vat dyes is gradually increasing in the international printing and dyeing market. However, due to its high requirements, the vat dyeing of cotton fabrics by general fluid exhaust dyeing cannot meet this requirement at all. [0003] This is because, on the one hand, the vat dye itself is insoluble or slightly soluble in water, and the synthesized vat dye particles are relatively large, which cannot be directly used in the printing and dyeing industry. Even after grinding, the dye particles are dispersed, but because the dye particles have Therefore, even if a certain dispersi...

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): D06P1/22D06P3/85D06P1/48D06P1/52D06P5/04D06B21/00
CPCD06B21/00D06P1/22D06P1/48D06P1/5228D06P3/828D06P5/04
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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