Direct dyes contain water-soluble groups, and their solubility significantly increases with increasing temperature. For direct dyes with poor solubility, pure alkali can be added to assist in dissolution. Direct dyes must be dissolved in soft water. If the hardness of dyeing water in production is relatively high, pure alkali or sodium hexametaphosphate can be added, which is beneficial for dye dissolution and has the effect of softening the water.

In order to adapt to the fierce competition in the textile market, Dongguan Tiansheng Chemical continuously improves the various properties of dyes, making their RFT higher and more environmentally friendly!

There are more than ten types of commonly used dyes, and how to choose the appropriate dye during dyeing is the key to the success or failure of dyeing. When selecting dyes, in addition to considering factors such as the type of fiber being dyed, the use of the dyed material, color requirements, price and cost, supply of goods, quality, and dyeing methods, it is not necessary to consider the principles of same color matching, close color matching, and less color matching, in order to achieve synchronous coloring, improve color reproduction, and improve sample accuracy.

1、 Try to minimize the tension during the refining and bleaching process. 2、 During the dyeing and finishing process, whenever wet cloth is dried, the tension should be relaxed as much as possible to reduce elongation and avoid excessive narrowing of the door width. For example, in the open-range continuous drying machine

At present, many dyeing and finishing enterprises often mix the prescriptions of dip dyeing, roll dyeing, and pad dyeing when determining dyeing prescriptions. They lack understanding and practice of the internal connections between the three different processing methods and cannot fundamentally solve practical problems. Different processing methods may use the same dyes and chemicals, but the methods used may vary greatly, and the use of additives may also vary.

The rise of China's textile and clothing industry also relies on cost advantages, but currently, with the gradual loss of cost advantages, the transformation of the textile and clothing industry is inevitable. The key lies in discovering one's comparative advantages and finding breakthroughs that can effectively increase added value, rather than relying solely on cost reduction to delay industry change.