CN104532624A - Fabric decoloring method - Google Patents
Fabric decoloring method Download PDFInfo
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- CN104532624A CN104532624A CN201410749436.0A CN201410749436A CN104532624A CN 104532624 A CN104532624 A CN 104532624A CN 201410749436 A CN201410749436 A CN 201410749436A CN 104532624 A CN104532624 A CN 104532624A
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- fabric
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- propyl alcohol
- xylonic
- dipping
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Abstract
The invention relates to a fabric decoloring method which comprises the following steps: dipping a fabric which is dyed by using an active dyeing agent into a mixed liquid of propyl alcohol and xylosic acid, cooling, dipping the fabric into an ethanol solution at the room temperature, washing and repeating for multiple times until the shallow fabric is completely decolored; for a dark fabric, further dipping the fabric into 10wt% of hydrogen peroxide, and washing with clean water. The fabric decoloring method has the advantages that when a cotton fabric is soaked in xylosic acid at high temperature, the combination of the active dyeing agent and the cotton fiber can be effectively broken, the fabric can be decolored to be white, the property of the fabric is not affected, the decoloring effect is good, and the redyeing is not affected.
Description
Technical field
The present invention relates to a kind of fabric discoloration method, belong to field of textiles.
Background technology
REACTIVE DYES be when dyeing with the dye of fiber chemically reactive, due in this kind of dye molecule containing can with the group of fiber generation chemical reaction, during dyeing, dyestuff and cotton fiber reacts, form covalent bond therebetween comparatively by force, make to decolour difficult.
Summary of the invention
The object of the invention is to provide a kind of discoloration method, with solve prior art exist problem.
Technical scheme of the present invention is:
Light coloured fabrics discoloration method, is characterized in that, decolorization process is as follows:
1) immersed in propyl alcohol and xylonic mixed liquor by the fabric of reactive dyeing, mixeding liquid temperature is 50-70 DEG C, keeps 1-2h; The mass ratio of propyl alcohol and xylonic is 10 ~ 15: 1 ~ 2;
2) be cooled to 30 DEG C, immersed by fabric in the 20wt% ethanol water under room temperature after 0.5-1h, washing, repeats 2-4 time.
Deep-colour fabric discoloration method, is characterized in that, decolorization process is as follows:
1) immersed in propyl alcohol and xylonic mixed liquor by the fabric of reactive dyeing, mixeding liquid temperature is 60-80 DEG C, keeps 2-3h; The mass ratio of propyl alcohol and xylonic is 10 ~ 15: 2 ~ 5;
2) be cooled to 30 DEG C, immersed by fabric in the 30wt% ethanol water under room temperature after 1-2h, clear water washs, and repeats 3-5 time;
3) immersed by fabric in 10wt% hydrogen peroxide, after 20-40min, clear water washs again.
Advantage of the present invention is: adopt discoloration method of the present invention, soaks COTTON FABRIC, effectively can break the connection of REACTIVE DYES and cotton fiber under high temperature with xylonic, remove the color of fabric, be white after decolouring, fabric property is unaffected, good decolorizing effect, on redying without impact.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
1) immersed in propyl alcohol and xylonic mixed liquor by the fabric of lightpink reactive dyeing, mixeding liquid temperature is 60 DEG C, keeps 1h; The mass ratio of propyl alcohol and xylonic is 10: 2;
2) be cooled to 30 DEG C, immersed by fabric in the 20wt% ethanol water under room temperature after 1h, washing, repeats 3 times.
Fabric color after decolouring contrasts with standard color comparison card, is white after decolouring.
Embodiment 2
1) immersed in propyl alcohol and xylonic mixed liquor by the fabric of dark-brown reactive dyeing, mixeding liquid temperature is 75 DEG C, keeps 3h; The mass ratio of propyl alcohol and xylonic is 15: 2;
2) be cooled to 30 DEG C, immersed by fabric in the 30wt% ethanol water under room temperature after 1.5h, clear water washs, and repeats 4 times;
3) immersed by fabric in 10wt% hydrogen peroxide, after 30min, clear water washs again.
Fabric color after decolouring contrasts with standard color comparison card, is white after decolouring.
Claims (2)
1. a light coloured fabrics discoloration method, is characterized in that, decolorization process is as follows:
Immersed in propyl alcohol and xylonic mixed liquor by the fabric of reactive dyeing, mixeding liquid temperature is 50-70 DEG C, keeps 1-2h; The mass ratio of propyl alcohol and xylonic is 10 ~ 15: 1 ~ 2;
2) be cooled to 30 DEG C, immersed by fabric in the 20wt% ethanol water under room temperature after 0.5-1h, washing, repeats 2-4 time.
2. a deep-colour fabric discoloration method, is characterized in that, decolorization process is as follows:
1) immersed in propyl alcohol and xylonic mixed liquor by the fabric of reactive dyeing, mixeding liquid temperature is 60-80 DEG C, keeps 2-3h; The mass ratio of propyl alcohol and xylonic is 10 ~ 15: 2 ~ 5;
2) be cooled to 30 DEG C, immersed by fabric in the 30wt% ethanol water under room temperature after 1-2h, clear water washs, and repeats 3-5 time;
3) immersed by fabric in 10wt% hydrogen peroxide, after 20-40min, clear water washs again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749436.0A CN104532624A (en) | 2014-12-10 | 2014-12-10 | Fabric decoloring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749436.0A CN104532624A (en) | 2014-12-10 | 2014-12-10 | Fabric decoloring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104532624A true CN104532624A (en) | 2015-04-22 |
Family
ID=52848234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410749436.0A Pending CN104532624A (en) | 2014-12-10 | 2014-12-10 | Fabric decoloring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104532624A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931322A (en) * | 2015-07-01 | 2015-09-23 | 必维申优质量技术服务江苏有限公司 | Quantitative analysis method for cotton and viscose blended fabrics |
| CN107059385A (en) * | 2017-04-17 | 2017-08-18 | 武汉纺织大学 | It is a kind of to improve the discoloration method of coloured suede strength |
| US11802370B2 (en) | 2021-02-24 | 2023-10-31 | The Hong Kong Research Institute Of Textiles And Apparel Limited | Method for decolorizing textiles |
-
2014
- 2014-12-10 CN CN201410749436.0A patent/CN104532624A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931322A (en) * | 2015-07-01 | 2015-09-23 | 必维申优质量技术服务江苏有限公司 | Quantitative analysis method for cotton and viscose blended fabrics |
| CN104931322B (en) * | 2015-07-01 | 2016-06-29 | 必维申优质量技术服务江苏有限公司 | A kind of quantitative analysis method of cotton and viscose blend fabric |
| CN107059385A (en) * | 2017-04-17 | 2017-08-18 | 武汉纺织大学 | It is a kind of to improve the discoloration method of coloured suede strength |
| CN107059385B (en) * | 2017-04-17 | 2021-10-26 | 武汉纺织大学 | Decoloring method for improving strength of colored velvet |
| US11802370B2 (en) | 2021-02-24 | 2023-10-31 | The Hong Kong Research Institute Of Textiles And Apparel Limited | Method for decolorizing textiles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |