You may not be aware of these small problems of water-based varnish painting?

Water-based varnishes may encounter various problems during the spray application process, and there are some minor problems that you may not understand.

01 Loss of gloss of paint film

When the coating film dries, its surface loses its luster and assumes a semi-matt/matt state.

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solution

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02 The adhesion is not strong

The adhesion between the surface coating and the base coating is insufficient, causing the coating to peel off

•Improper grinding and cleaning of the substrate, the type of primer on the surface of the substrate does not match (bare plastic or bare metal) • Too long flash-off time between different coatings • Insufficient flash-off time between coatings (water-based paint is not dried) • Color Coarse paint spraying (more fog spraying quantity)•Insufficient film thickness, thin topcoat

solution

1.

03 Coating particles

There are irregular raised particles on the surface of the topcoat
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If you don't know what caused this situation, it is a headache
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So let's have a look
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• The surface to be sprayed is poorly cleaned, the spray gun is poorly cleaned • The construction environment is unclean, and the builders are not clean • The air in the spraying barn is unfiltered and poorly ventilated • The compressed air hose is more dusty • The coating is not dry, and the vehicle board Pieces removed from the baking room

solution

1.
Make sure that the spraying barn is well ventilated.
2.
Clean the vehicle before entering the barn.
Use standard masking materials.
3.
Keep the compressed air equipment pipeline clean.
4.
Keep the spraying tools clean and free of stains.

Remedy

• Lightly micro-particles.
After the coating layer is dry, use 3M P1200 P1500 sandpaper to grind and remove the particles and polish it.

•The coating surface is more serious.
After grinding with P500～P600 dry sanding paper, re-spray construction