Principle of Cataphoresis Painting
Cataphoresis painting is one of two methods of electrophoretic painting. In cataphoresis painting, cationic, water-soluble paints based on epoxies or acrylates with a very low content of organic solvents (around 2%) are used, which contain paint particles in the form of polymer cations.
During painting, the product is immersed in a painting tank and connected as a cathode. Applying direct current creates an electric field that causes polycations to move to the cathode. This mechanism creates a coating with a uniform thickness over the entire surface, including hard-to-reach places, edges, or corners.
The thickness of the formed coating depends primarily on the applied voltage and typically ranges from 15 to 30 micrometers. The deposited coating must be baked at temperatures between 155 and 180 °C.
