CED process is industrially used for applying coatings to metal fabricated products. It has been widely used to coat automobile bodies and parts, tractors and heavy equipment, electrical switch gear, appliances, metal furniture, beverage containers, fasteners, and many other industrial products.

The first patent for a cathodic ED product was issued in 1965 and assigned to BASF AG. PPG Industries, Inc. was the first to introduce commercially cathodic EPD in 1970. The first cathodic EPD use in the automotive industry was in 1975. Today, around 70% of the volume of EPD in use in the world today is the cathodic EPD type, largely due to the high usage of the technology in the automotive industry. It is probably the best system ever developed and has resulted in great extension of body life in the automotive industry

In short ED method is one of the most efficient methods for primer coating suitable for large volume production for coating complex form items, or where high corrosion resistant coating is required.

Paint material utilisation is approaching 95 to 99%. Corrosion resistance measured in salt spray is excellent and no other painting method can compete with ED method in primer coating.

For all these reasons ED painting is indispensable technology which all industrialized countries must master.

On the other hand ED painting requires more technically competent operators than other painting methods do and it is sometime seen that a whole investment of ED painting line is abandoned after a trouble infested operation continued many months unsuccessfully and finally the owner changes to other methods.

Strong points of ED methods

Suitable for coating form / shape articles.
Excellent edge covering
Utilisation of coating material is more than 95%
Environmentally friendly. Along with powder coating, the method is one of a few technologies to meet VOC emission standards.
Economically for large volume coating.