In the process of paper production, defoamer is a crucial chemical additive, which is mainly used to solve the negative impact of foam problem on product quality and production efficiency. Therefore, the use of defoamer in the paper industry is mainly to deal with various problems caused by foam in the production process.

In the process of paper production, foam mainly comes from the violent mixing of pulping, beating, paper making, etc., which will mix with a lot of air, and the release of resin, fatty acid and other substances in wood during pulping, which is easy to form foam. There are also some chemical additives, such as sizing agent, starch, dyes and other surface active substances, which will make foam stable.

If foam is not controlled in time, it is easy to cause holes, spots or uneven fiber distribution on the paper surface, and the coating or sizing effect becomes worse, affecting the strength, gloss and printing performance of the paper. At the same time, foam occupies the volume of pulp, which causes the fluctuation of pulp concentration, easily affects the stability of paper machine operation, and may also block the filter screen, pipeline or vacuum suction system, increasing the frequency of shutdown cleaning. Moreover, a large number of foam overflows are easy to pollute equipment, increasing cleaning and maintenance costs.

The emergence of defoamers has effectively solved this series of problems. By reducing the surface tension of foam, the defoamer can break the bubbles and quickly break them, and form a hydrophobic film in the slurry to prevent the stable existence of new bubbles, inhibit the regeneration of foam, and reduce a lot of resource waste.

Therefore, defoamer is an indispensable auxiliary in the papermaking process. Through efficient control of foam, product quality, production efficiency and cost optimization are ensured, and environmental protection requirements are also taken into account. Moreover, modern environment-friendly defoamer has a low VOC, biodegradable formula, which is very friendly to the environment, solving the social problems of green and sustainable development of a large number of enterprises.