Resin is a major film-forming substance in coatings, and its cleanliness directly affects the final spraying quality. Resin filtration mainly filters large particulate pollutants and removes haze-like pollutants. In addition, the country’s requirements for environmental protection are also getting higher and higher. In order to reduce the volatile substances of solvent resins, water-based resins have gradually replaced solvent resins. The solid content of water-based resin is relatively large, and the quality of spraying on the market is getting higher and higher, so the filtration requirements for water-based resin also become very high. The resin filtration solution here is mainly about how to filter water-based resins and solvent resins, and what filters to use.
Impurities in water-based resins include large particles of pollutants and haze particles, and impurities in solvent resins include pigment particles and some oily substances.
From the point of view of the solvent manufacturing process, it has been initially clarified what impurities are contained in the resin. We can determine whether to use a bag filter or a precision filter in the filtration process. Because the bag filter is a special equipment for solid-liquid separation, its design feature is to intercept solid pollutants and oil molecules in the fluid. At the same time, precision filters are also suitable for resin filtration equipment, but precision filters are more suitable for resin filtration with low solid content. In general, bag filters are preferred for water-based resins and solvent resins.