Electrostatic, Powder Coating or ESP (Electrostatic Powder Coating) is a process where a dry blend of fluoropolymers is sprayed onto a negatively charged metal surface. The attraction causes the coating to bond strongly and evenly to the metal, once the surface is completely covered with the powder the item is sent through an oven which causes the polymers to melt and bond together forming a nice durable, even layer as it cools.
The static pull of the coating to the metal substrate also significantly reduces the amount of overspray, or spray that misses the target.
This type of coating is one of the most economical of all surface finishing technologies.