Successful Development Of "Golden Ball Textile" Salt Free Dyeing Technology
A salt free dyeing technology with low resource consumption and less environmental pollution has been successfully developed recently in Shaoxing golden ball textile finishing Co., Ltd., and has been used in dyeing of cotton, cotton polyester, nylon and other fibers in bulk. The first two days, golden ball textile company has declared two patents for invention to the State Patent Office on this technology.
Golden ball textile finishing company is an annual production of 80 million meters of printing and dyeing cloth, Lu Jingen, the company's boss, attaches great importance to energy conservation and environmental protection. A few years ago, he got a message from several teachers at Donghua University in Shanghai: because of the large amount of inorganic salts needed in traditional dyeing process, the application of inorganic salts has serious environmental pollution problems.
Therefore, there are domestic enterprises in the development of salt free dyeing technology. However, due to the high cost of application, it can not be used in batch production. After knowing this information, Lu Jin realized the business opportunities immediately. Soon, he set up a salt free dyeing technology research and development team in his company.
After receiving this scientific research task, technicians of Golden Globe immediately experimented in the laboratory. Since there is no precedent for this technology, everything must be explored by ourselves. In order to develop auxiliaries capable of changing the negative electrical properties of fibers, technicians did not successfully develop salt free chemical dyeing auxiliaries until 2007.
However, they also encountered a high cost of printing and dyeing problems. In this regard, scientific and technological personnel continue to tackle key problems under the strong support of the company leaders. They choose the cheap chemical raw materials as the best synthetic formula for the auxiliaries; while changing the traditional printing and dyeing process, they first put the grey cloth into the normal temperature water tank before dyeing, then slowly roll the gray cloth slowly through the cold rolling mill, then roll up the cloth and dye it in the salt free dyeing cylinder. Numerous experiments finally succeeded in tackling the problem of high application cost.
According to the introduction, in order to dye the dye onto the fiber cloth, the traditional dyeing process must put 200 kilograms of salt into each cylinder to make the grey cloth color. The discharge of large quantities of inorganic salts not only increases labor intensity, but also causes environmental pollution.
The salt free dyeing auxiliaries can modify the fibers to make their surfaces cationic, so that they can be dyed with reactive dyes with anions to achieve dyeing.
The salt free dyeing auxiliaries and salt free dyeing technology developed by the Golden Globe textile company have high technology content, low resource consumption, less environmental pollution and good economic returns, and are of great value for popularization.
The printing and dyeing of cotton fabric with a printing and dyeing capacity of about 68 million meters last year can be calculated by more than 530 tons of annual salt, 20 thousand cubic meters of water reuse and water saving, and the dye fixation rate has been greatly improved, and the dyeing fiber has good hand feel and bright coloring.
The dyeing and printing technology of the company's salt free dyeing technology is tested by the textile inspection center of the modern textile industry research institute. Its fastness to rubbing, color fastness to washing and color fastness to perspiration are all up to the national standard. Enterprises are reporting this technology to win the national science and Technology Progress Award and state-level high-tech enterprises.
Editor in chief: Xu Qiyun
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