A free flowing dry powder
Typically applied electrostatically
Cured under heat to allow the powder to melt and flow to produce a film
Cooled to give a solid decorative and protective film
Emit zero to near zero Volatile Organic Compounds (VOC)
Overspray can be recycled to achieve closer to 100% use of the coating
Good transfer efficiency
Thermosetting – undergoes a chemical reaction during cure improving the performance properties.
Thermoplastic – simply melts and re-solidifies the binding polymer during the film formation and does not undergo a chemical reaction during the baking process but rather flows out into the final coating.
Resin and curing agent – components that cure to form a coating film also called the Binder. They provide the powder coatings’ mechanical, chemical and outdoor properties along with corrosion resistance.
Filler – inorganic materials which enhances properties such as abrasion and corrosion resistance and hardness.
Pigments – organic or inorganic material that provides colour to the finished coating.
Additives – often minor components used to tailor specific properties such as flow, gloss or texture.
Powder particles are charged and attracted to the earthed object which is to be coated.
Corona powder particles are negatively charged
Tribo powder particles are positively charged
Compressed air aerates the powder and causes it to behave as a liquid
Preheated item to be coated is dipped
Powder melts on item
Item removed from bed coated