Cataphoresis is an immersion painting treatment in which the piece to be painted acts as the cathode (-) (negative pole), while the electrodes in the tank act as the anode (+).

The physical principle exploited is the attraction between opposite charges: the paint particles (epoxy or acrylic resin emulsified in water) are positively charged (cations). Under the influence of an electric field (direct current), they migrate toward the workpiece and adhere firmly.

A unique feature is its self-limiting ability: as the paint settles, it electrically isolates the metal. This forces the current to seek out the uncovered areas, ensuring complete coverage even in the most inaccessible spots.

Compared to traditional electrostatic painting, cataforestry painting has some important advantages:

• Penetration ability
• Film uniformity.
• Protection of sharp edges.
• Efficiency and sustainability.