Stacking dyeing method and equipment

Abstract

The embodiment of the invention discloses a stacking dyeing method and stacking dyeing equipment, which are used for solving the hydrolysis phenomenon of cloth with high liquid carrying rate in the mangle expression and stacking process. The method comprises the steps that S1, controlling a cloth feeding device to feed cloth to a first press-rolling device, wherein a dye solution is contained in atrough of the first press-rolling device; S2, feeding the cloth treated by the first press-rolling device to a second press-rolling device of which a material barrel contains auxiliaries, and when the cloth enters the second rolling device, controlling the second press-rolling device to add the auxiliaries to the surface of the cloth by adopting a surface liquid feeding mode; S3, rolling the cloth treated by the second press-rolling device through a rolling device, and performing sealed packaging and stacking color fixing, wherein the stacking time ranges from 1 hour to 72 hours, and the stacking temperature is not higher than 80 DEG C; and S4, carrying out post-treatment on the stacked and color-fixed cloth, and collecting the cloth subjected to post-treatment to obtain a finished product.

Description

technical field [0001] The invention relates to the technical field of textile dyeing, in particular to a stack dyeing method and equipment. Background technique [0002] The dyeing process of cotton fabric is an important processed product in the printing and dyeing industry, and the cold pad batch process is one of its main dyeing processes. [0003] In the traditional cotton fabric cold pad-batch dyeing process, the fabric needs to be dipped in the dye solution and alkali agent, and then the cloth with the dye solution is piled up to fix the color. The traditional padding method is to immerse the cloth in a mixture of dye and alkali agent. In the liquid, after soaking and then rolling, the dye is easily hydrolyzed in the alkaline environment in the trough, resulting in waste of dye and floating color. [0004] There are many traditional padding methods, such as uniform padding machine and heavy-duty padding machine, which can well evenly roll the cloth soaked in dye solu...

AI Technical Summary

Problems solved by technology

[0003] In the traditional cotton fabric cold pad-batch dyeing process, the fabric needs to be dipped in the dye solution and alkali agent, and then the cloth with the dye solution is stacked to fix the color. The traditional padding method is to immerse the cloth in a mixture of dye and alkali agent. In the liquid, after soaking and then rolling, the dye is easily hydrolyzed in the alkaline environment in the trough, resulting in waste of dye and floating color

[0004] There are many traditional padding methods, such as uniform padding machine and heavy-duty padding machine, which can well evenly roll the cloth soaked in dye solution, but no matter what kind of padding method, there will be problems in the cloth after rolling. The problem of high liquid retention rate, the liquid retention rate of traditional padding process fabrics is more than 50%. Due to the high liquid retention rate of traditional padding process, dyes are under alkaline conditions during long-term stacking. Prone to hydrolysis, resulting in low dye utilization rate, floating color, and increased washing burden

[0005] The hydrolysis of dyes is an important factor that causes the low utilization rate of dyes and the generation of a large amount of wastewater in the cold pad-batch dyeing process of reactive dyes

At the same time, in the process of stacking and fixing the color, due to the high liquid carrying rate, there is a large amount of free water, which is easy to cause swimming phenomenon and affect the product quality

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