In the paper industry, the problem of foam has been puzzling many manufacturers. Foam not only affects production efficiency, but also reduces the quality of paper, bringing many inconveniences to production. However, the emergence of papermaking defoamers has provided an effective solution to this problem.

Papermaking defoamer is a kind of additive specially designed for foam problem in papermaking process. It can quickly eliminate bubbles in the pulp, improve the quality of papermaking, and ensure the stability of production and the perfection of the paper. In the process of papermaking, foam mainly comes from the interaction of chemicals, fibers, pigments and fillers in the pulp. These foam not only affect the dewatering effect of pulp, but also may cause paper defects, reduce machine speed, increase energy consumption and other problems.

Through its unique defoaming and foam inhibiting properties, paper defoamer can quickly remove bubbles in the pulp, eliminate foam floating on the pulp surface and air dissolved in the pulp. It can avoid the formation of holes, reduce paper breakage, improve the smoothness and opacity of the paper, and make the paper have better uniformity and strength. In addition, papermaking defoamers can improve the one-way retention rate of fillers, reduce the filler content in white water, and lower costs; Reduce the concentration and ash content of the slurry on the mesh, and extend the lifespan of the formed mesh; Ensure the loss of fibers and wet end chemicals, and improve the coating processing and printing performance of paper.

When using papermaking defoamers, it is necessary to choose the appropriate type according to the specific papermaking process and requirements. For example, in alkaline pulp washing, bleaching, and black liquor concentration, it is necessary to choose defoamers with strong alkali resistance and high temperature resistance; In paper machines, it is necessary to choose defoamers that can avoid the formation of stains on the paper surface and do not affect the water resistance of the paper; In coating, it is necessary to choose defoamers with strong defoaming and anti foaming properties that do not affect the brightness and printability of the coating.

In addition, attention should be paid to the amount and usage of defoamers. Excessive addition may lead to an increase in production costs, while insufficient addition may not achieve the expected defoaming effect. When adding defoamers, they should be evenly dispersed in the slurry to ensure their full effectiveness. At the same time, attention should also be paid to the stability of lotion to avoid the impact of prolonged strong oscillation or shear on the stability of lotion.

It is worth noting that with the increasing awareness of environmental protection, more and more paper companies are paying attention to the environmental performance of defoamers. Therefore, when choosing a paper defoamer, in addition to considering its defoaming effect and usage cost, it is also necessary to pay attention to environmental indicators such as whether it is non-toxic and harmless, and whether it is easy to biodegrade. Only in this way can we ensure that production needs are met without causing negative impacts on the environment.

Overall, as an indispensable key additive in the paper industry, defoamers play an important role in improving production efficiency, reducing production costs, and enhancing paper quality. However, when using defoamers, it is also necessary to fully consider factors such as their type, dosage, usage method, and environmental performance to ensure that they can fully play their role and meet the actual needs of the enterprise.