Roughness of paint coating surfaces and its causes

2026-02-18View Original

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After the paint film dries, irregularly shaped raised particles are distributed on its entire or partial surface. Surface roughness is essentially the result of an imbalance among four factors: the substrate, the material, the manufacturing process, and the environment; it is by no means due to a mistake in just one aspect. Priority should be given to three aspects: substrate cleanliness, paint filtration, and standardization of spraying parameters; over 90% of problems can be avoided in advance ； If it has already occurred, mild cases can be repaired using sandpaper and polishing; for severe cases, it is recommended to redo the work to ensure durability.

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Roughness of paint coating surfaces and its causes

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