In the paper industry, choosing the appropriate paper defoamer is the key to ensuring smooth production and product quality.

When choosing a paper defoamer, the paper quality requirements should be considered. Different papers have different requirements for defoamers, such as higher performance and residue requirements for defoamers for high-grade papers. Select suitable defoamers based on the characteristics of different processes such as pulping, pulping, papermaking, and coating. On the premise of ensuring quality, choose a low-cost defoamer. Choose non-toxic and pollution-free environmentally friendly defoamers to protect the environment and human health.

When the defoamer can be fully stirred and dispersed in the foaming system, the defoamer can be directly added to the pulp tank, overhead tank or mesh tank and other foam producing parts. For defoamers that need to be diluted, they can be diluted with water or process solution in an appropriate container according to the recommended dilution ratio, and then evenly added to the production process. Diluted defoamers are more easily dispersed in the system, improving the defoaming effect. In areas with severe foam or key points of equipment, defoamer can be directly injected into foam point by point to eliminate foam quickly and effectively. Adjust the amount of defoamer flexibly according to the actual production situation and the amount of foam. Too little may not completely eliminate foam, while too much may increase costs and have other impacts on the system.

When using paper defoamers, attention should also be paid to selecting defoamers with good stability to avoid a decrease in defoaming effect due to changes in temperature, pH value, and other factors. Ensure that the selected defoamer is compatible with other chemicals in the system to avoid chemical reactions or precipitation. Understand and comply with local environmental regulations, choose environmentally friendly defoamers that meet the requirements, and reduce the impact on the environment.

Store properly according to the instructions of the defoamer, avoiding adverse conditions such as direct sunlight, high temperature, and humidity that may affect the performance of the defoamer. Before using defoamers in new processes or formulas, it is recommended to conduct small-scale or pilot tests to confirm the defoaming effect and its impact on the system.

For example, a paper enterprise found that foam was serious in the coating process when producing high-grade cultural paper, which led to defects on the paper surface. The company attempted to use various defoamers, but the results were not satisfactory. After multiple investigations and experimental verifications, an environmentally friendly and high-performance polyether defoamer was ultimately selected. The defoamer not only successfully eliminates foam in the coating process, but also significantly improves the surface quality of paper, meeting the high standards of customers. At the same time, the defoamer has a moderate cost and no adverse effects on the system, which has been unanimously recognized by the enterprise.

Choosing appropriate paper defoamers and using them correctly is of great significance for improving paper production efficiency, ensuring paper quality, and reducing costs. In the selection and use process, factors such as paper quality requirements, production process characteristics, economic benefits, and environmental friendliness should be fully considered to ensure that defoamers can meet production needs and achieve optimal results.