Basically, powder coating is paint. However, it is possibly the greatest advancement in the coatings industry since Columbus because of its durability and elimination of solvents.  The paint comes to us  in a powder form rather than a liquid, and is a two component curing system like an epoxy . That is, it comes to the painter as a box of dry powder, very much like flour. It is applied to the parts with a charge of  about 80,000 volts of static electricity,  which causes it to be attracted to the parts, which have to be grounded .   The powder clings to the parts like pieces of paper on a comb until the parts go into the curing oven. At the curing temperature, which can vary from 2500  to 500o  depending on the chemistry, the powder melts into a liquid, at which time a catalyst is released, causing the cure to take place. After 10 minutes to an hour, depending on several variables, the coating is fully cured and ready for packaging  as soon as it cools. Powder coatings are available in several chemistries, including epoxies, polyesters, urethanes, hybrids, and specialty finishes like Nylon, Teflon, etc., for use inside and outside.  It also comes in a  high temperature coating that will withstand up to 12000,   but in limited colors.

Key Benefits over liquid paints.

  •   Extremely tough and flexible--like a plastic film.
  •    More consistent in thickness.
  •    No solvents emitted, polluting the environment.
  •    Good but not great color choices.
  •    Comparable costs to liquid paints, if not less.