In the paper industry, the problem of foam has always been a link that needs attention. Foam will not only affect production efficiency, but also adversely affect paper quality. Paper defoamer is specifically designed for the foaming characteristics of the papermaking process in the paper industry. In the process of papermaking, foam is easily produced due to the links of beating, chemical additives addition, mechanical agitation, etc. These foam not only occupy the equipment space, reduce the mixing efficiency of pulp, but also may lead to uneven fiber distribution, thus affecting the strength and flatness of paper. On the other hand, paper defoamer can quickly penetrate into foam membrane, and break foam by reducing surface tension, thus ensuring the efficiency of pulp preparation process.

There are various types of defoamers for papermaking, and currently commonly used ones in the market include organosilicon defoamers, polyether defoamers, polyester defoamers, etc. Among them, organic silicon defoamers have been widely used in the paper industry due to their excellent defoaming effect, low volatility, and good stability. Polyether defoamers, polyester defoamers, etc. also have excellent defoaming properties, which can meet the needs of different papermaking processes.

In the papermaking process, defoamers have a wide range of applications. Defoamers play an important role in various processes, from pulp and paper making to coating and papermaking wastewater treatment. In the pulping process, defoamer can eliminate the foam generated by lignin and other surfactants, and improve the pulping efficiency; In the paper making stage, defoamer can inhibit the generation of foam and eliminate the existing foam, so as to ensure that the paper can be evenly formed in the web and press parts; In the coating and surface treatment process, the application of defoamers can ensure the uniformity of coatings and coatings, and improve the surface quality of paper.

In addition, the use of defoamers in papermaking can also reduce production costs. By improving production efficiency and reducing the defective rate and downtime caused by foam problems, enterprises can save a lot of manpower, material resources and time costs. At the same time, high-quality defoamers can achieve good defoaming effects at lower dosages, further reducing the cost of using defoamers. Provided strong support for the sustainable development of the paper industry.