Attention must be paid to film thickness when spraying powder.

- Jun 20, 2018-

The thickness of the coating must be paid attention to when spraying the powder. If the film is thin, the pattern is very small and can not see clearly, which will lead to insufficient pitting. If the surface of the powder coating is smooth, the surface of the spray coating should be treated. Powder coatings are completely different from ordinary paints. They exist in the state of fine powder. Because they do not use solvents, they are called powder coatings. The main features of powder coatings are: harmless, efficient, saving resources and environmental protection characteristics.


It has two main categories: thermoplastic powder coatings and thermosetting powder coatings.


Thermoplastic powder coatings consist of thermoplastic resins, pigments, fillers, plasticizers and stabilizers. Thermoplastic powder coatings include polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose and polyester.


Thermosetting powder coatings consist of thermosetting resins, curing agents, pigments, fillers and auxiliaries. Thermosetting powder coatings include: epoxy resin, polyester, acrylic resin. When the powder is sprayed, the pressure can not be too large. If the air pressure is too large, it will lead to poor clarity of pattern and pitting. After spraying, it must be checked. If there is any defect, it must be repaired and processed in time.


Thirdly, when the powder is solidified, it must be baked at suitable temperature. If it is a fine art pattern powder, the process has special requirements, when the recycled powder is re sprayed, the pattern will be smaller and not clear, so it is necessary to remind you that the fine art pattern powder can not be recycled powder.