Common drawbacks of PE paint (14) "paint off"

Disadvantages: paint off

cause
① The surface of the coated object is not clean and contains other harmful substances.
②The putty or bottom seal is too thick and not thoroughly polished.
③After sanding the lower layer, the interval between layers is too long.
④The substrate and the coating are too smooth, and the coating is not firmly attached.
⑤The moisture content in the wood is too high.
⑥ The wood sealing effect is not good enough, the air temperature is high, and the temperature is too much.
⑦The paint used between the paints does not match.
⑧Coat the surface layer before the bottom layer is dry. The surface tension of the surface layer is large, which may cause the primer to fall off.

Solution
①The surface treatment of the coated object must be thorough.
② Putty treatment must be thorough.
③Do not leave it for too long after sanding between layers.
④The surface of the substrate should have proper roughness.
⑤The wood is dried, and the moisture content is equivalent to the local equilibrium moisture content.
⑥ Properly seal the wood.
⑦Don't use strong solvent paint as the top coat, pay attention to the matching use of the bottom coat.
⑧After the base coat is dry, apply the top coat.