Reactive dye pad dyeing and steaming process

Abstract

The invention provides a reactive dye pad dyeing process. The process is characterized in that the reactive dye and fixing alkali are separately melted; firstly the reactive dye is subjected to padding, then the fixing alkali is subjected to padding and spraying or is applied by a proportioning pump and then the cloth enters into a drying machine with controllable moisture content to be dried until the moisture content is below 30% and the cloth only contains unfrozen water and bound water; and the cloth enters into a booster box to be steamed and fixed under such moisture content and then enters into a water washing box to be washed with water, soap and water and dried after being fixed, thus completing the dyeing process. The process has the following beneficial effects: the process does not have special requirements for the dyes and chemicals; the process can be used for the existing pad dyeing materials; the bottoming and drying processes are omitted; the cloth temperature is higher during steaming; and the water content of the cloth is low, so vast steam can be saved, the fixation rate of the dye is improved, the use amount of the salt is greatly reduced or the salt is not used and the requirements for energy conservation and environmental protection are satisfied.

Description

[0001] Technical field [0002] The invention relates to a reactive dye pad dyeing process, especially an environmental protection process capable of realizing wide adaptability of reactive dyes, energy saving, low salt or no salt. Background technique [0003] At present, the printing and dyeing industry is a high energy consumption and high pollution industry, and pad dyeing active dyeing accounts for the vast majority of production capacity, so changing the high energy consumption of reactive pad dyeing is the main development direction of dyeing and finishing technology. [0004] In order to solve this problem, several wet short steaming processes have been developed at home and abroad. Their common feature is that they have special requirements for the performance of reactive dyes and are not suitable for all reactive dyes currently in use. [0005] 2. Equipment investment is expensive, and it can only be used for reactive dyeing, not for Shihlin dyeing, which has great l...

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Problems solved by technology

[0004] In order to solve this problem, several wet short steaming processes have been developed at home and abroad. Their common feature is that they have special requirements for the performance of reactive dyes and are not suitable for all reactive dyes currently in use.

[0005] 2. Equipment investment is expensive, and it can only be used for reactive dyeing, not for Shihlin dyeing, which has great limitations and affects its large-scale promotion and use in China.

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