Supercritical carbon dioxide urea button dyeing kettle and its dyeing process

Abstract

The invention discloses a supercritical carbon dioxide urea button dyeing kettle and a dyeing technology thereof. The dyeing kettle comprises a kettle body, and the bottom of the kettle body is provided with a carbon dioxide fluid and dye inlet and a carbon dioxide fluid and dye outlet. When dyeing is performed, carbon dioxide fluid and dye at the bottom flow into the kettle body to impact on buttons and drive the buttons to be dyed in a non-static mode, therefore, the buttons can move under the variable speed impact of air flow, and the dyeing defects at the overlapping positions of the buttons are avoided. Meanwhile, the bottom of a barrel body of the dyeing kettle is designed to be of an inverted-trapezoidal structure, and therefore the problem that the buttons cannot be dyed due to the fact that the buttons cannot make contact with the carbon dioxide fluid carrying the dye is solved. By adopting the dyeing technology, the buttons which are rich and complete in color can be obtained, the dyed products do not need aftertreatment such as cleaning and drying, waterless dyeing is achieved in the overall process, the production cost is saved, the dyeing quality is improved, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of textile printing and dyeing, in particular to a supercritical carbon dioxide urea button dyeing kettle and an anhydrous dyeing process thereof. Background technique [0002] my country is a country with a shortage of water resources, and the environment of water resources is also deteriorating. Coupled with the waste of water, the situation of water resources is not optimistic. The traditional water-bath dyeing of buttons mainly uses water as the medium. During the dyeing process, a large amount of chemical substances such as dyes, auxiliary agents and surfactants cause serious pollution to the environment. Masterbatch causes instability in the production process of buttons, which restricts the sustainable development of the garment accessories industry. In the 21st century, the requirements for easy control, high efficiency, no pollution and recyclability are becoming more and more prominent. The super...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a supercritical carbon dioxide urea button dyeing kettle, through which the carbon dioxide fluid drives the buttons to be dyed in a non-static manner, so as to solve the problem of overlapping parts of buttons and buttons when using the supercritical carbon dioxide dyeing kettle of the prior art Uneven and impermeable dyeing, causing the problem of button dyeing defects

Images