The electrostatic powder coating is a very modern, environmentally friendly and resource-efficient method of processing and protection of metal surfaces. This type of coating is characterized by a clear concept and easy handling.
After completion of treatment (for example, degreasing and phosphating) the material will be coated by spraying on an electrode in the gun which is positively charged with high voltage. Around the grounded workpiece, an electric field is built up. The negatively charged powder coating particles are attracted to the positive field of the surface, are deposited at the same time and remain there until they are cured at the subsequent curing process at about 200-220 °C.
The entire process can be operated automated or manually by means of highly computerized robots.
With the powder coating process, a higher film thickness is resulting, leading to a large resistance of mechanical stress.
The applications and product range of powder coating is rising, since the powder coating is an environmentally friendly alternative to wet painting and a very good corrosion protection.
