| Search our quarter-million Q&As |
Home of the finishing HOTLINE since 1989
-----Electro-deposition painting
2003
Hello,
I'm researching about EDP for new project. Could you tell me briefly about EDP (Electro-deposition paint) and its process?
Thank you
Naruemol Chaiparsitthikul-Nakhon-Ratchasima, Thailand
Hi, Naruemol
Electro-deposition painting is also sometimes called e-coating, electrophoretic lacquering, cationic electropainting and a few other terms. The component is electrified and submerged into a tank, and the oxidation or reduction process (very similar to electroplating) changes the soluble organic paint molecules to a thin "dry" non-conductive paint on the component.
Some of the advantages are that no solvents are required; 100 percent coverage is routine because once the paint has deposited in one spot it is insulative and the current flows to other areas; and the coatings are very thin compared to competitive technologies like powder coating. Disadvantage are that the paint must be kept quite pure and the required filter membranes can be a headache, and changeover of colors may not be real easy. The changeover issue may sometimes be addressed by post-dyes instead of coloring the electrodeposited paint. Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
March 12, 2011
Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.