What are dyeing and finishing auxiliaries?

The dyeing and finishing process of textiles involves modifying and beautifying the primary textile products (yarn, grey fabric) obtained by spinning and weaving various fibers, to make them suitable for various purposes such as clothing, household use, decoration, and industrial use. The textile industry uses various auxiliary chemicals in various processing processes from spinning, spinning, weaving, dyeing and finishing to finished products, in order to improve the quality of textiles, improve processing effects, improve production efficiency, simplify process processes, reduce production costs, and endow textiles with various excellent application properties. This auxiliary chemical is commonly referred to as Textile Dyeing and Finishing Auxiliaries.

Textile dyeing and finishing auxiliaries can be divided into two categories based on production processes: textile auxiliaries and dyeing and finishing auxiliaries.

Chemicals added in the dyeing and finishing process to achieve a certain purpose, endow textiles with a special function or style, improve product performance and added value, improve product quality or ensure smooth progress of various processes, or to save energy and reduce processing costs. These substances, excluding dyes and general chemicals (such as acids, alkalis, salts), are collectively referred to as dyeing and finishing auxiliaries (dyeing and finishing auxiliaries).

Of course, in modern dyeing and finishing processes, some chemicals (such as finishing aids) can no longer be considered as "auxiliary agents", but based on habits, they are still referred to as "additives". Dyeing and finishing aids play a very important role in the entire textile dyeing and finishing process.

There are many kinds of fibers that make up textiles (such as cotton, hemp, silk and wool in natural fiber; viscose, Lyocell, Modal, acetate, soybean, peanut, polyester, nylon, acrylic, vinylon, polypropylene, etc. in chemical fibers). The dyeing and finishing process of textiles made of different fibers can generally be divided into pretreatment, dyeing, printing, finishing and other processes, but the process is different. The dyeing and finishing additives used in different processing processes are different, and the dyeing and finishing additives used in each process of the same process are also different. Therefore, the application of dyeing and finishing additives in the dyeing and finishing industry is very extensive.

Dyeing and finishing auxiliaries play a very important role in the dyeing and finishing process of the entire textile industry, mainly including the following aspects:

1. Promote the smooth progress of the processing process and improve processing efficiency;

2. Ensure the quality of processed products;

3. Endowing textiles with a special function or style, improving product performance and added value; Provide comfort, protection, and durability to fabrics.

4. Save energy and reduce processing costs.