How To Avoid The Quality Problem Of Colored Aluminum Coil Coating?

The coating process is related to the quality of colored aluminum coil coating. The relative linear speed ratio of the coating roller, paint roller, metering roller and substrate needs to be controlled within the standard range and the coating should be set to a suitable viscosity range according to different systems and film thickness of the coating products to ensure the coating quality. The curing process, temperature and baking time of the coating must be controlled as required and must not be changed arbitrarily, otherwise it will seriously affect the color difference and performance of the color coated aluminum coil.

The quality of paint and the quality of aluminum substrate are the factors that most affect the coating quality during the coating process of color-coated aluminum coil. The color difference between different paint batches, poor matching of paint and solvent, or uneven surface of aluminum substrate, uneven film thickness, poor edge deflection, etc. directly affect the quality and performance of color-coated aluminum coil. Therefore, the raw materials must be strictly inspected before storage and the operator must be regularly trained in technology to avoid quality problems of color coated aluminum coil.

Regularly check whether the coating equipment is operating normally. The coating equipment is required to operate smoothly, without horizontal and vertical jitter, and the coating roller is required to be finely ground. The lateral runout of all rollers of the coating machine must be controlled within the standard range, otherwise it will seriously affect the surface quality of the coating.

The coating environment of colored aluminum coil must always be kept clean, dust-proof, insect-proof and with certain ventilation performance to ensure that the surface quality of the coating is not polluted.