Silicone defoamer is widely used in textile printing and dyeing. Why is silicone defoamer used in textile printing and dyeing?


Textile printing and dyeing industry is a production process involving many links, including slurry preparation, printing, dyeing, finishing and other links. In these processes, bubbles are sometimes produced, affecting production efficiency and product quality. Therefore, silicone defoamer is widely used in textile printing and dyeing industry.






Why does it bubble during textile production?


First, the sizing process and the high-speed movement of the yarn lead to the formation of foam. This is because during the sizing process, the slurry and yarn rub together to generate static electricity, which attracts moisture from the air to form foam. In addition, when the yarn is moving at high speeds, the foam will move with the fabric, causing the amount of foam to increase.






Secondly, some of the chemicals used in the pre-treatment process can also cause the formation of foam. For example, desizing agents, bleaching detergents and cleansers will be boiled at high temperatures when they penetrate the fabric, which will make the fabric fragile and prone to foam.






In addition, in the process of medium temperature dyeing and high temperature dyeing, the vibration of mechanical operation will also lead to the production of foam. This is because the high-speed operation of the dyeing machine will produce friction and vibration, making the foam difficult to stabilize.






Finally, the mixing process and the color paste will also produce foam during the printing process. This is because during the mixing and printing process, due to the influence of mechanical operation and chemical reactions, the number of foams will increase.






In response to these problems, we can use textile defoamer to eliminate foam, which can improve production efficiency, ensure product quality, protect equipment safety and reduce costs, and is an ideal defoamer solution.






What are the characteristics of textile defoamer?


Textile defoamer has the advantages of fast defoaming rate, long time of defoaming, acid and alkali resistance, high temperature resistance, excellent defoaming performance and stability, and will not affect the quality of the slurry due to demulsification or reaction with the slurry.


They are capable of eliminating various types of foam during the production process, including foam produced by high-speed stirring, foam produced at rest, and foam produced by the interaction between droplets.


At the same time, they are also able to remain stable in a variety of different media, such as water, organic solvents and acid bases.






In addition to the use of textile defoamer, there are physical methods that can be used to remove foam.


For example, the placement of baffles or filters, mechanical stirring, static electricity, freezing, heating, steam, radiation irradiation, high-speed centrifugation, pressure and decompression, high-frequency vibration, instantaneous discharge and ultrasonic (acoustic liquid control) methods can promote the transmission rate of gas at both ends of the liquid film and the drainage of the bubble film, so that the stability factor of the foam is less than the attenuation factor, and the number of bubbles is gradually reduced.


However, the common disadvantage of these methods is that the use of environmental factors is strong, the defoaming rate is not high, and the advantages are environmental protection and high reuse rate.






In short, the foam problem in textile printing and dyeing needs to be solved from many aspects.


The use of textile defoamer is an effective solution, while physical methods can also be used to assist in removing foam. But the most fundamental thing is to control all aspects of the production process and reduce the generation of foam. Only in this way can we improve production efficiency and product quality and reduce production costs