Reduction washing-fade dyeing technology

A process, washing and fading technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of light fastness, poor bleaching resistance, high price of dyes, and difficulty in uniform dyeing, etc., to achieve uniform dyeing, increase diffusion, and improve dyeing performance Effect

Inactive Publication Date: 2017-03-08
张家港市双盈印染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vat dyes are insoluble in water. When dyeing, they must be reduced and dissolved in a strong alkaline reducing solution to form leuco-salt sodium salts to dye fibers. After oxidation, they will return to insoluble dye lakes and fix them on fibers. The degree is relatively high, but the price of the dye is high and it is not easy to dye evenly
[00

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1

[0014] A reduction bleaching and dyeing process, the specific steps include the following:

[0015] Semi-finished white cloth → padding dye suspension process → first drying process → padding fixing solution process → first steaming process → padding reducing solution process → second steaming process → first washing process → soaping process → The second water washing step → the second drying step, including the dye suspension step, the padding reducing solution step, the second steaming step, the first water washing step, the saponifying step, the second water washing step, and the second drying step They are all routine processing procedures in this industry.

[0016] The compounding ratio of vat dye and reactive dye in the dye suspension of the padding dye suspension process is 3:1; the preparation of the dye suspension is to dissolve the reactive dye in water, and then add the vat dye which is ground into superfine powder and disperse it. The amount of water...

Example Embodiment

[0017] Example 2

[0018] A reduction bleaching and dyeing process, the specific steps include the following:

[0019] Semi-finished white cloth → padding dye suspension process → first drying process → padding fixing solution process → first steaming process → padding reducing solution process → second steaming process → first washing process → soaping process → The second water washing step → the second drying step, including the dye suspension step, the padding reducing solution step, the second steaming step, the first water washing step, the saponifying step, the second water washing step, and the second drying step They are all routine processing procedures in this industry.

[0020] The compound ratio of vat dye and reactive dye in the dye suspension of the padding dye suspension process is 4:3; the preparation of the dye suspension is to dissolve the reactive dye in water, and then add the vat dye which is ground into superfine powder and disperse it. The amount of water ad...

Example Embodiment

[0021] Example 3

[0022] A reduction bleaching and dyeing process, the specific steps include the following:

[0023] Semi-finished white cloth → padding dye suspension process → first drying process → padding fixing solution process → first steaming process → padding reducing solution process → second steaming process → first washing process → soaping process → The second water washing step → the second drying step, including the dye suspension step, the padding reducing solution step, the second steaming step, the first water washing step, the saponifying step, the second water washing step, and the second drying step They are all routine processing procedures in this industry.

[0024] The compounding ratio of vat dye and reactive dye in the dye suspension of the padding dye suspension process is 2:1; the preparation of the dye suspension is to dissolve the reactive dye in water, and then add the vat dye which is ground into superfine powder and disperse it. The amount of water...

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PUM

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Abstract

The invention discloses a reduction washing-fade dyeing technology. The technological process starts from a semi-finished product of white cloth and comprises: a dye suspension padding process, a first drying process, a fixing liquid padding process, a first steaming process, a reduction liquid padding process, a second steaming process, a first washing process, a soap boiling process, a second washing process and a second drying process, wherein the dye suspension in the dye suspension padding process is prepared by compounding a vat dye and a reactive dye in a ratio of (3:1) to (4:3). In the invention, the vat dye is compounded with the reactive dye, the two dyes are applied to the cloth surface at the same time, thus the dyeing of the vat dye is uniform, and the dyeing performance of the reactive dye can be improved; and after the fabric dyed by the technology disclosed by the invention is made into a finished product, an old-like style can be obtained through chlorine bleaching.

Description

technical field [0001] The invention relates to the technical field of textile dyeing, in particular to a reduction wash-out dyeing process. Background technique [0002] Textile dyeing is a process in which dyes and fibers are chemically or physically combined to form insoluble colored substances on fibers. The dyeing process mainly includes dyeing, washing, drying, color fixing and post-dyeing treatment. [0003] Vat dyes are insoluble in water. When dyeing, they must be reduced and dissolved in a strong alkaline reducing solution to form leuco-salt sodium salts to dye fibers. After oxidation, they will return to insoluble dye lakes and fix them on fibers. The degree is relatively high, but the price of the dye is high and it is not easy to dye evenly. [0004] Reactive dyes are also called reactive dyes. Its molecular structure contains one or more active genes, which can form covalent bonds with fibers. This type of dye structure contains water-soluble groups that can b...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/22D06P1/62D06P1/613D06P5/10D06P5/02
CPCD06P1/38D06P1/22D06P1/6133D06P1/625D06P5/02D06P5/10
Inventor 徐建龙陶国平
Owner 张家港市双盈印染有限公司
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