What are powder coatings?

Powder coatings may be described as 100% solid paint which comprises a homogeneous blend of polymers, pigments and additives produced in the form of a fine powder. The powder is applied, most commonly, by means of a spray gun that imparts an electrical charge on the powder particles and directs them towards the object to be coated. The object is then subjected to heat which causes the powder to melt, flow out and chemically react to form a tough, coherent film.

Powder coatings are available in various chemistries: epoxy, polyester, epoxy/polyester (hybrid), polyurethane and acrylic.

They undergo a chemical change when heated and will not remelt to a plastic state once cured. They, usually, do not require primers and are applied over pretreated metal substrates to provide high durability and a superior cosmetic finish at relatively low cost and low skill levels.