Analysis of the core advantages of papermaking defoamers - triple breakthroughs in efficiency, quality, and sustainability

In the paper industry, foam is a key problem affecting production stability, product quality and cost control. From pulping to paper making, coating to wastewater treatment, the disordered production of foam will reduce production efficiency, increase energy consumption, and even lead to paper defects. And papermaking defoamers have become the core solution to this problem through their unique technical characteristics.

The foam in paper production will hinder the flow of pulp, reduce the pumping efficiency, and interfere with the dewatering process. High quality defoamer can rapidly penetrate into foam membrane in 5-10 seconds, reduce surface tension and cause foam to burst. Through the self-assembly characteristics of molecular structure, a foam inhibiting layer is formed in the slurry, which lasts for 4-8 hours to avoid repeated generation of foam.

A large number of foam residues will directly affect the physical properties and appearance quality of paper. The micropores formed after the foam burst will lead to pinholes, fisheyes or uneven surface of the paper. Defoamers can reduce these defects by more than 90%. Uniform fiber distribution depends on stable slurry environment. Defoamer can improve the tensile strength of paper by 8-15% by eliminating foam interference. If the coated paper contains foam, there will be spots or uneven coating. Defoamer can ensure the uniformity of coating and improve the printing effect.

Although defoamers are an additional investment, the comprehensive benefits they bring far exceed the costs. Modern defoamers have broken through the environmental limitations of traditional products. The new generation of polyether modified defoamers is biodegradable and avoids accumulation in wastewater treatment. Does not contain restricted substances such as APEO and heavy metals, and meets regulatory requirements such as EU REACH and US FDA. Simultaneously maintaining stability in a closed water circulation system, reducing fresh water consumption and wastewater discharge.

The defoamer for paper making has developed from a simple foam elimination tool to a multifunctional additive to improve production efficiency, product quality and sustainability. With the development of papermaking technology towards high speed, high closed cycle, and low carbonization, technological innovation in defoamers will continue to provide key support for the industry to break through bottlenecks. In the future, the combination of intelligent foam control systems (such as sensor based dynamic addition technology) and environmentally friendly defoamers will further unleash their potential value.