Dyeing method for improving reactive dye fabric tray dyeing color strength

A technology of reactive dyes and color depth, which is applied in dyeing methods, textiles and papermaking, etc., can solve the problems of insufficient dyeing depth of reactive dyes, large discharge volume, and excessive dye consumption, so as to reduce pollutant discharge and save dyes, with obvious effects Effect

Inactive Publication Date: 2008-08-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The technical problem to be solved by the present invention is to provide a dyeing method for improving the color depth of reactive dye fabrics. This method starts with different principles, mainly starting from changing the dyeing distribution of reactive dyes on fabrics, and improving the dyes on the surfac

Method used

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  • Dyeing method for improving reactive dye fabric tray dyeing color strength
  • Dyeing method for improving reactive dye fabric tray dyeing color strength
  • Dyeing method for improving reactive dye fabric tray dyeing color strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] When examining the dyeing of woven fabrics, when the same color depth is used, the percentage of dyestuffs can be saved by using the process of the present invention.

[0083] Dye: Levafix CA three-color reactive dye, Remazol black reactive dye (Dystar Company).

[0084] Woven fabric: khaki bleached semi-finished product, yarn count 20 / 16, density 128 / 60; poplin semi-finished product, yarn count 40 / 40, density 133 / 72.

[0085] Table 1 Saving rate of reactive dyes in woven fabric dyeing

[0086]

[0087]

[0088] By table 1, when Levafix CA three primary colors and black reactive dyestuff are dyeing poplin fabric, application process dyestuff saving rate of the present invention is 20~35%, and dyestuff consumption can reduce 27.2% on average; When khaki fabric is dyed, dyestuff saving rate is 16~28% , The average amount of dye can be reduced by 25.5%.

Embodiment 2

[0090] Investigate the dyeing of knitted fabrics, when the same color depth, using the process of the present invention can save the percentage of dyestuffs.

[0091] Dye: Levafix CA three-color reactive dye, Remazol black reactive dye (Dystar Company).

[0092] Knitted fabric: bleached semi-finished cotton sweater cloth, 250 g / m 2 .

[0093] Table 2 Saving rate of reactive dyes in knitted fabric dyeing

[0094]

[0095] Black N

[0096] By table 2, when Levafix CA three primary colors and black reactive dyestuff are dyed in knitted fabric (cotton sweater cloth), apply the process dyestuff saving rate of the present invention 16-38%, dye dark color saving rate higher, dyestuff consumption can reduce 25.5% on average %.

Embodiment 3

[0098] Investigate the change of color fastness of Levafix CA reactive dyes. Because in the new process of the present invention, the fixation mechanism of the dyestuff on the fabric has no difference with the conventional dyeing process, but the fixation concentration of the dyestuff on the fabric surface is improved. Therefore, the impact of the new process on color fastness may be mainly in terms of rubbing resistance. This example illustrates the changes in the color fastness to rubbing of fabrics dyed with similar depths of color by the conventional process and the new process.

[0099] Dye: Levafix three primary color reactive dye, Remazol black reactive dye (Dystar company).

[0100] Fabric: Semi-bleached poplin, count 40 / 40, density 133 / 72.

[0101] Table 3 Color fastness to rubbing of dyed fabrics

[0102]

[0103] According to the above test data, the color depth (K / S value) of the fabrics dyed by the two processes is very close (color di...

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Abstract

The invention relates to a dyeing method for improving the dip-dye color depth of an active dye fabric, which includes: (1) when dyeing is started, adding the fabric, salt and a fixing agent, alkali, into a dye bath at the constant temperature of 40 to 90 DEG C to be operated for 10 to 30 minutes to lead the fabric to uniformly absorb the salt and alkali agent; (2) then using a continuous liquid adding device to add the dye slowly for 30 to 90 minutes, then continuously dying for 15 to 30 minutes; (3) after dyeing is finished, the fabric is washed by water, washed by soap, washed by water and then dried. The invention can acquire the color deeper than that of a normal technique, can remarkably save the dye, reduce the discharging of contaminations and is suitable for the developing direction of ecological energy-saving dyeing technique. The dyeing method is suitable for the dyeing of the fiber woven fabric and the knitting of fibrin such as cotton poplin, khaki and knitting, etc. The effect is extremely remarkable when dyeing a dark color.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing, in particular to a dyeing method for improving the color depth of reactive dye fabrics. Background technique [0002] Reactive dyes have complete chromatograms and bright colors, and can be applied to various dyeing processes. They are widely used in the dyeing of cellulose fiber fabrics such as cotton, linen, and viscose. They are currently the most widely used dyes in the printing and dyeing industry. Reactive dyes can form covalent bonds with fiber molecules and have excellent wet color fastness, but there are also problems such as low dyeing depth, low dye fixation rate, and large pollution. Therefore, improving the dyeing depth of reactive dyes and reducing the amount of dyes and emissions has always been an important topic in the research and development of the printing and dyeing and dye industries. [0003] Among the dyeing methods of reactive dyes, the exhaust dyeing process is t...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/673D06P3/66
Inventor 屠天民林立云
Owner DONGHUA UNIV
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