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After people's living conditions are better, the demand for clothing textile decoration is also deepening, so the textile printing and dyeing industry is developing faster and faster. However, in the process of textile printing and dyeing, a lot of foam is often produced, and the appearance of foam will have a certain impact on the printing effect, so the elimination of textile foam is imminent.

Causes of textile printing and dyeing foaming:

1. The sizing process and the high-speed movement of the yarn will cause a lot of foam;

2. In the pre-treatment process, it is necessary to use a desizing agent when desizing the product, and to use a bleaching agent and a cleaning agent when bleaching

3. and washing. In order to allow these chemicals to penetrate into the textiles better and more evenly, a high-temperature scouring method is used, which leads to the generation of foam;

4. During the process of medium temperature dyeing and high temperature dyeing, the vibration of mechanical operation leads to the generation of foam;

5. Foam is produced during the pulp mixing process and the color paste is stirred during the printing process.

The harm of foaming in textile printing and dyeing:

1. Foaming causes a certain waste of raw materials and products;

2. Foaming prolongs the reaction period of the dye;

3. Foaming affects the quality of the final product;

4. Foaming greatly limits the production capacity;

5. Foaming is not conducive to accurate measurement;

6. Foaming will cause certain pollution to the environment

After reading, we have a certain understanding of the causes and hazards of foam in textile printing and dyeing, so it is necessary to use defoamer to eliminate foam. Textile printing and dyeing defoamer has high temperature resistance and strong alkali resistance and strong bubble breaking and bubble suppression ability. After being added to the working liquid, it becomes a solution, emulsion or dispersion, which is adsorbed on the surface of the bubble film. Because it has a lower surface tension than the bubble film, the surfactant or foam substance can be attracted and pulled over, so that the surface viscosity of the foam liquid film is reduced, and the local thinning is broken.