In the paper industry, the preparation of pulp and the production of paper are often accompanied by a large number of foam. These foam not only affect production efficiency, but also may have a negative impact on the quality of the final product. Therefore, the application of defoamers in papermaking is particularly important.

Defoamers for paper making break and dissipate bubbles and foam rapidly mainly by destroying their stability. Reduce the time of equipment shutdown, cleaning and restart caused by foam, and improve the overall production efficiency. Controlling foam can reduce the holes, delamination and fracture in the paper, and improve the uniformity and strength of the paper. Reduce the erosion and damage of foam to the equipment and extend the service life of the equipment.

Defoamers are widely used in all aspects of the paper industry. In the chemical pulping process, a variety of chemical additives and chemicals need to be added, which is easy to produce a large number of foam. At this time, the use of acid and alkali resistant, salt resistant, high temperature resistant defoamer can effectively control foam. In the beating process, the pulp undergoes physical and mechanical treatment, resulting in fiber cutting, crushing, water absorption, swelling and other changes, which is easy to produce foam. At this time, the use of high carbon alcohol lotion defoamer or non silicon defoamer can effectively remove the fine bubbles entrained between fibers. In the process of paper making, a lot of foam will be produced due to the use of various chemical additives. At this time, the use of efficient defoamers such as paper defoamers can quickly remove the fine bubbles entrained between fibers and eliminate the foam floating on the pulp surface to ensure the paper quality. For the paper that needs surface coating, the use of non silicon defoamer, esterified polyether defoamer, etc. can control the foam problem in the coating process and improve the coating quality.

Paper defoamers play a crucial role in the paper industry. It can not only effectively control the generation and dissipation of foam, improve production efficiency, but also significantly improve the quality of paper. With the development of the paper industry, the performance requirements for defoamers are also increasing. Therefore, selecting appropriate paper defoamers is crucial for ensuring the stability of paper production and product quality.