Different color filter types have differences in hardness, flexibility, adhesion, etc. PVC color film is the color film used at present, with good hardness and toughness, and the price is moderate. The color filter is mainly affected by the application, the use environment corrosiveness, the service life, the processing method, and the degree of deformation.
There are certain differences in the adhesion and toughness of different primers. Epoxy bonds well to the substrate, but not as tough as other primers. Polyester has good bonding force with substrate and excellent toughness. Polyurethane is a primer with good overall performance. The primer is usually selected by the supplier according to the production process, use, corrosiveness of the use environment, and matching relationship with the topcoat.
Color film will have color difference in production and use. Because the color difference is affected by various factors such as production organization, color depth, use time, use environment, and purpose.