What are the technological elements in the dyeing and finishing process?

1. Time, temperature and concentration are the three major technological elements of dyeing and finishing chemical treatment. When processing fabrics, the amount of application (chemical agents, auxiliaries) applied to the fabric, the action time, and temperature control are the core of the process. Process route, process prescription and process discipline are the keys to determine the success of the process. In production practice, we often encounter such situations, that is, when the same process is used, the quality of different batches of grey fabrics is very different, even if the same batch number is processed, the quality also fluctuates. Even if the same process and measures are adopted for a certain product, the product quality still cannot reach the same level. The reason is mainly due to the lax implementation of the three elements of the process. Therefore, qualified enterprises can achieve the consistency of the three elements of the process through online testing and automatic control to improve the level of process processing. They must also find relevant entry points in the production practice process to be effective.

2. In the three-element control, the temperature control is easier to achieve; the processing time control can be achieved by controlling the volume of the cloth and the speed of the vehicle to meet the specified requirements of the process. As for the control of the concentration of supply fluid, working fluid, and fabric-carrying fluid, it is more complicated, and most of the fluctuations in quality are caused by this. It must be recognized that when processing fabrics, the amount of application (dyes, chemicals, auxiliaries) applied to the fabric is the core of the process; and different application methods and the affinity of the application to the fiber will affect the amount of application. . The open-width continuous dyeing and finishing of fabric has a long process route and many procedures, and the random quality assessment of each procedure is currently based on traditional experience and less quantitative work has been done. These all bring difficulties to on-site real-time control.

3. In open-width continuous dyeing and finishing, the correct application of dyes, chemicals and auxiliaries should be the core issue of process implementation. Based on years of work experience in stabilizing product quality, this issue is introduced below.