White roller-coated writing board

Core Production Process: Substrate Pre-treatment High-quality steel sheets are selected as the substrate and undergo degreasing and anti-rust passivation to ensure the surface is free of oil and corrosion, thereby enhancing the adhesion of subsequent coatings. Roller Coating Process Automated precision roller coating equipment is used to apply a specialized white matte writing coating evenly onto the steel sheet surface. Coating application rates are precisely controlled to ensure uniform thickness and prevent defects such as missed spots or sagging. Curing and Drying The coated sheets are conveyed into a constant-temperature curing oven and baked according to the temperature profile specified for the coating formulation. This allows the coating to fully cross-link and form a film, ensuring the surface hardness meets required standards. Post-processing and Cutting Following curing and cooling, the surface quality is inspected to reject defective items (such as those with bubbles or impurities). Finally, the sheets undergo precision cutting to remove burrs and meet specific dimensional requirements, resulting in the finished writing board.