1. Environment: It is required to clean the interior of the painting room to prevent dust, insects and certain ventilation, and to ensure the surface quality of the aluminum plate is not polluted. At the same time, due to temperature changes, the process conditions are changed in time.
2. Raw materials: Coatings and aluminum sheets are the most influential factors in the coating process. Due to the color difference between the batches of coatings, the coating fineness is not enough and the coating rate is not high. The coatings and solvents are not well matched. Layers and the like will directly affect the coating effect and produce defects. The unevenness of the aluminum coil substrate, uneven film thickness, and poor edge deflection also directly affect product quality and overall use. Therefore, when selecting raw materials, it should be strictly controlled.
3. Equipment: The coating line requires the painting equipment to be in good condition. The painting equipment requires stable operation, no horizontal and vertical shaking, and the coating roller requires fine grinding. All rollers of the coating machine will be laterally beating and must be controlled within the allowable range, otherwise the surface quality of the coating will be seriously affected.
4. Process: The coating process has a close relationship with the quality of the coating. It is required to control the relative line speed ratio of the coating roller, the paint roller, the metering roller and the substrate within a certain range. According to the different system and the film thickness of the coated product, set a certain viscosity range for the coating to ensure smooth coating and promote the improvement of product quality. The curing process of the coating, oven control must be controlled according to requirements, and must not be arbitrarily changed, otherwise it will seriously affect the color difference and performance of the coated products.