1, coating thickness control difficult solvent paint coating equipment coating thin layer is easy to form a thin film coating, hope at the end of the coating in the coating is difficult to meet the requirements, even with epoxy resin powder coating, the average minimum film thickness is between 50-70 microns, DangTu film thickness less than 40 microns, because the film is too thin, poor flowing property of coating, Therefore, the appearance of decorative fruit is not good, presenting serious orange peel or pores.
2, paint color difficult powder coating color can not be like solvent-based paint, simply mix several color paint into the required color.
The color of powder coating is determined by the pigment added to a coating, so the color can not be mixed at will. The pigment matching color of the workpiece using powder coating must be determined from the powder making process.
3. The powder electrostatic coating method is a kind of coating method with higher effect in painting, but it is difficult to change the color in the process of operation. Before changing, all the powder coating circulation systems such as powder bucket, coating pipe and recycling device must be thoroughly cleaned and blown clean.
Paint related knowledge can be learned from powder coating powder manufacturer.
4. It is difficult to spray the profile on the surface of concave and complex shapes.
5, high recovery efficiency of powder coating loss, coating powder completely covered on the surface of the coating, and powder coating can be recycled, the actual loss of coating is very little, generally below 5%.
6, high efficiency powder coating and solvent-based coating is different. Powder coating does not need a long curing time, so it can shorten the coating time and process, the coating efficiency is improved 3-5 times more than the solvent-based coating.