Improve the quality of textile dyeing and finishing process with online monitoring system
The process of chemical treatment of textile materials (fibers, yarns and fabrics) is also known as printing and dyeing in modern times. Dyeing and finishing together with spinning, weaving or knitting production to form the entire process of textile production. Dyeing and finishing includes four processes of pretreatment, dyeing, printing and finishing. The quality of dyeing and finishing has an important impact on the use value of textiles.
Dyeing and finishing is a key industry for textile deep processing, finishing and value added. The pre-treatment of dyeing and finishing includes the main processes of desizing, scouring, bleaching and mercerizing. The grey cloth removes various slurries and impurities through these processes, improves the wearing performance of the fabric, and improves the adsorption capacity of the fabric for water and dye, so as to facilitate subsequent Processing proceeds.
The main agent for pretreatment is caustic soda. Traditional de-breathing and mercerizing processes have different requirements for lye concentration. In the pretreatment solution such as desizing and scouring, the NaOH concentration is generally 10 to 80 g/L. The de-boiling and bleaching process uses a low-concentration lye, and often has a small amount of additives and a certain temperature requirement. The mercerizing process uses a high-concentration caustic soda solution, usually at a low temperature, and has appeared in recent years. High temperature mercerizing process. Maintaining a constant solution concentration during dyeing and finishing is the key to ensuring process reproducibility. Accurate measurement and control of lye concentration is important for stabilizing the process and ensuring process quality. A variety of refractometers and concentration meters produced by ATAGO have been widely used in the textile dyeing and finishing industry. Such as PAL-40S NaOH concentration meter, PAL-39S hydrogen peroxide concentration meter, PR-101a handheld concentration meter, RX-5000a automatic refractometer, CM-780N online measurement and control system, PRM-100a online concentration meter, etc., for measuring dyeing and finishing The concentration of the solution ensures the quality of printing.
The CM-780N online measurement and control system in the dyeing and finishing process can detect and control the whole process in real time, comprehensively improve the process reproducibility and quality stability of the printing and dyeing process, and completely change the long-term manual titration, manual recording and manual control. The extensive production management method ensures that the process is strictly implemented according to the process plan, thus ensuring that the product quality reaches the international advanced level, and accurate control can prevent excessive use of water, dyed materials and energy, and achieve the goal of energy saving and environmental protection. .
It is recommended to use the CM-780N alkali concentration online measurement and control system in the textile dyeing and finishing process. The industry users use the feedback concentration control to be stable and accurate, improve product quality, and greatly reduce the defective product repair rate. At the same time, through accurate control, prevent excessive use of water, dyes, and energy. 
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