What is the Function of Automotive Coating?

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Automotive intermediate coating can firmly adhere to the primer surface and easily bond with the topcoat layer above it, serving as a connecting link between the preceding and the following. It has good moisture resistance and sanding properties, and can seal minor defects in the underlying layer, improving the fullness of the paint surface. The main functions of automotive intermediate coating include the following aspects: 1. Filling and leveling effect: The intermediate coating can fill tiny depressions on the substrate surface and sandpaper marks or pinholes left by sanding, serving a leveling function. 2. Isolation effect: The intermediate coating can further isolate the contact between the external environment and the vehicle body substrate, enhancing the rust-proof function of the primer.