subject: Powder coating for films [print this page] Further, when an electrostatic apparatus, which is known in the art for powder coating processes, is used for coating, the surface to be coated attracts highly chargeable particles (those having a large particle diameter) more easily than others. The unapplied and recycled fractions of the powder coating quite differ in properties from the original product. When re-used, the fractions thus recycled cause a drop in coating efficiency and film properties.
