Powder coating is a type of coating that is applied as a free-flowing, dry powder. Unlike conventional liquid paint, which is delivered via an evaporating solvent, powder coating is typically applied electrostatically and then cured under heat or with ultraviolet light. The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly used for coating of metals, such as household appliances, aluminium extrusions, drum hardware, automobiles, and bicycle frames. Advancements in powder coating technology like UV-curable powder coatings allow for other materials such as plastics, composites, carbon fiber, and MDF (medium-density fibreboard) to be powder coated, as little heat or oven dwell time is required to process them.

Advantages over other coating processes

Powder coatings contain no solvents and release little or no amount of volatile organic compounds (VOC) into the atmosphere. Thus, there is no need for finishers to buy costly pollution control equipment. Companies can comply more easily and economically with environmental regulations.
Powder coatings can produce much thicker coatings than conventional liquid coatings without running or sagging.
Powder coated items generally have fewer appearance differences than liquid coated items between horizontally coated surfaces and vertically coated surfaces.
A wide range of speciality effects are easily accomplished using powder coatings that would be impossible to achieve with other coating processes.
Curing time is significantly faster with powder coatings compared to liquid coatings especially when using ultraviolet cured powder Coatings or advanced low bake thermosetting powders.

Powder coating used in our products

For our light fixtures housing, the metal surface will be powder coated after polishing treatment, and we use the powder which is special for outdoor use. This treatment can make our lamps to be weather resistant and corrosion resistant, can be used in many kinds of environments in many regions.