Method and device for static dyeing by adopting supercritical fluid

Abstract

The invention discloses a method for static dyeing by adopting supercritical fluid. The method comprises the following steps of: (1) dyeing: placing an object to be dyed in an uptake dyeing system for uptake dyeing; (2) static developing and color fixing with the supercritical fluid: placing the dyed object to be dyed in the step (1) in a supercritical fluid developing and color fixing kettle, and adding the supercritical fluid in the supercritical fluid developing and color fixing kettle for the developing and color fixing of the object to be dyed in the static supercritical fluid; and (3) after the developing and color fixing are completed, eliminating system pressure to recover the supercritical fluid, and opening the supercritical fluid developing and color fixing kettle for taking out the object to be dyed. In the method for static dyeing by adopting supercritical fluid, the supercritical fluid is in a stationary state in the developing and color fixing process, so that the phenomenon of dye migration cannot occur, the dyeing quality is easy to control, and the dyeing system does not need to be cleaned in the replacement of the dyeing color. Meanwhile, the invention also discloses a device for realizing the method for static dyeing by adopting the supercritical fluid.

Description

technical field [0001] The invention relates to a method and a device for dyeing fibers, yarns and fabrics with supercritical fluid, especially a method and a device for statically dyeing fibers, yarns and fabrics with supercritical fluid. Background technique [0002] Most of the traditional fabric dyeing adopts water dyeing process, but the water dyeing process needs to consume a lot of water resources on the one hand, and on the other hand produces a large amount of waste water which seriously pollutes the environment. Therefore, the water resource consumption and wastewater discharge in the printing and dyeing industry have seriously restricted the national sustainable development strategy and the development of the printing and dyeing industry, and seriously affected the quality of life of the people. [0003] The research and development of new water-saving and environmentally friendly dyeing technologies has become an urgent need for the country, industry and enterpri...

AI Technical Summary

Problems solved by technology

[0005] However, because the supercritical state of most fluids is in a high-pressure and high-temperature state, the development of a high-pressure supercritical dyeing device for production faces many technical difficulties and the cost is relatively expensive; at the same time, because the entire system equipment is in a high-pressure sealed state, It makes it very difficult to monitor the dyeing quality during the dyeing process; in addition, because the supercritical fluid dissolved in the dye is in a flowing state in the system, it is difficult to clean the dye remaining in the system equipment, pipelines, and valves, and it is difficult to adapt to production. The need to change dyeing colors frequently

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