In the paper manufacturing process, it is easy to form a large number of foam, and foam will lead to bubbles in the pulp, forming holes and spots on the paper surface, even affecting the fiber interlacing uniformity, reducing the strength and quality of the paper. How to effectively control foam and improve paper quality? The application of defoamer has become the best solution to foam.

In the process of pulping, paper making and coating, foam is easily produced due to mechanical agitation, the use of chemical additives and the natural characteristics of fibers. Defoamers reduce the surface tension of liquids, penetrate the bubble film to rupture it, and prevent bubbles from re aggregating. After use, the paper uniformity is improved by more than 20%, and the fiber recovery rate of the white water circulation system is also significantly improved. At the same time, in the process of sewage treatment, defoamer can also reduce the pollutants carried by foam and improve the efficiency of wastewater treatment.   

When selecting and using defoamers, we also need to pay attention to adding them in moderation. Too much or too little defoamer may affect the performance and stability of the manufacturing process. After adding defoamers, it is necessary to stir thoroughly to ensure that the defoamers can be evenly dispersed. Prioritize the use of biodegradable, low VOC (volatile organic compounds) defoamers that comply with environmental regulations, and adjust the optimal dosage according to different processes.  

In general, defoamers play a vital role in the paper manufacturing process. Through scientific selection and application of defoamers, paper enterprises can effectively reduce foam defects, improve product qualification rate, and finally achieve the leap from "defects" to "high-quality products". In the future, with the advancement of technology, more efficient and environmentally friendly defoaming solutions will further promote the paper industry to move towards high-quality and sustainable development.