Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. (Powder Coatings) Any coating which is applied to the surface as a dry, finely ground powder and then heated above its melting point so that the powder particles flow together to form a film.