After the car paints are sprayed and dried, the surface of the paint film appears like needle-shaped holes or pores like leather. This phenomenon is called pinhole. The surface of the paint film is pitted and the depth can reach the bottom layer.
1. When the Automotive Paints is painted, the paint film is sprayed too thick. Generally, it is three times, but if you spray it four or five times, it is very likely that pinholes will occur. Because the paint film is dry, the solvent and air are from The bottom layer is too long to the surface of the paint film. When they reach the surface of the paint film. After the dry, so only the skin can be broken out, at this time those pores have no way to recover, so left a small hole
2, there is a small hole when polishing the primer. This is because when the ash is scraped, air is contained in the ash; after the primer is applied, the holes will be revealed and the
holes will be formed.
If pinholes appear, you need to polish to the primer layer, fill the pinholes, re-spray the primer, and re-spray.
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