A dyed fabric is rinsed in clean water, not only does not exude color, and several goldfish swim joyfully in the water after washing fabrics.... Laboratory of dyeing and weaving at the Experimental Center of the School of the Arts, Soochow University and Jiangsu Silk Science Research Institute After years of research, the completion of a "wash-free disperse dye printing technology" can turn this wish into reality.
Wastewater treatment and emissions from printing companies have always been a problem for enterprises and environmental protection agencies. In the general disperse dye printing process, the fabric gray fabrics need to go through screen printing, steaming, water washing, shaping and other steps eventually become printed products. The dyestuff is fixed on the fabric by steaming and coloring, and the excess dyes and pastes are washed away by washing. In the process of washing, a large amount of sewage and waste water will be generated. If it is discharged without treatment, the vegetation on the ground will be killed. Harm to groundwater sources and become a direct source of environmental pollution.
Is it possible for a printing company to produce high-quality products without generating sewage in the printing and dyeing process? To solve this problem, the dyeing and weaving laboratories of the Experimental Center of the School of the Arts, Soochow University and the Jiangsu Silk Science Institute have undergone many years of corporate research and repeated experiments, and succeeded in small batch production in the printing enterprises of Jiaxing and Shaoxing. Indicators are in line with national standards.
Recently, this technology has been successfully applied to the national invention. One of the patent patent applicants and Miao Haiqing, director of the dyeing and weaving laboratory of the Su Da Academy of Art, introduced that the steam-washable disperse dye printing technology only needs to match the disperse dyes with the environmentally friendly printing-free steam-washing pulp and then print them. Need to go through the steaming hair color, directly in the shape to complete the hair color, and hair color effect is consistent with the steamed, even if the fabric washed, there will be no floating color overflow, can be removed from the washing process, the operation is also more Simple. Especially in the printing of thick fabrics, this non-steaming and disperse printing technology can greatly improve the quality of printed products compared with traditional printing processes. This new technology eliminates the steaming and washing steps that generate large amounts of sewage in the traditional printing process. It also blocks the discharge of colored water and sewage from the source, and at the same time saves the capital investment, maintenance, and maintenance of related equipment. A large amount of expenses for daily expenses.
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