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.
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, aluminium screens, hardware, automobile and bicycle parts.
Advantages over other coating processes:
1.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 the regulations of the U.S. Environmental Protection Agency.
2.Powder coatings can produce much thicker coatings than conventional liquid coatings without running or sagging.
3.Powder coated items generally have fewer appearance differences than liquid coated items between horizontally coated surfaces and vertically coated surfaces.
4.A wide range of speciality effects are easily accomplished using powder coatings that would be impossible to achieve with other coating processes.
5.Curing time is significantly faster with powder coating than with liquid coating.
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