Surface treatment of PVC foam board; when spraying paint, we must pay attention to the surface treatment of the foam board. The oil, dust, and debris on the surface need to be cleaned. The surface should not be too dry and slightly wet when spraying paint. Stir the paint evenly; when we carry out the PVC foam board paint process, we must first stir the paint thoroughly. The effect of spraying the paint without mixing is not ideal. Not only waste the PVC foam board, but also waste the paint. Dilute the paint into To a certain extent
Although PVC sheet has very strong resistance to oxidants, reducing agents and strong acids, it cannot directly contact concentrated sulfuric acid and concentrated nitric acid. Understand the production process: Weigh the auxiliary materials--mixing--feeding--extrusion device to plasticize and mix while injecting foaming agent--the second injection-grade extrusion device to further plasticize and mix evenly with the foaming agent- -Extrusion through die-cooling and setting-traction-rewinding-packaging. The equipment used in each process should be tested in detail, and the equipment that is prone to problems should be repaired and treated in a timely manner. After use, all equipment should be shut down, including hydropower equipment.
