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|Powder Coating on Wood|
Since the 1960s, powder coating has revolutionized the finishing industry by providing a superior, durable, environmentally friendly finish, particularly for metal products such as appliances, automotive parts, sporting goods and countless other products.
Technological advancements in powder coating materials, application and curing methods have also brought the advantages of powder coating to heat sensitive substrates. Powder coating is now used on a variety of products that were impossible a few years ago.
One of the biggest breakthroughs for powder in the heat sensitive substrate market is on medium density fiberboard, or MDF, a combination panel bonding particles of wood with a synthetic resin. MDF is very suitable for powder coating application because of its low porosity and homogeneous surface. MDF products include office furniture, kitchen and bath cabinets, doors, store fixtures and displays, barbecue trays and ready-to-assemble furniture for the office and home.
Powder coating is revolutionizing the MDF market because it offers design freedoms other finishing methods and laminating processes just can't provide. Powder coating provides a beautiful, durable, seamless finish in every color of the rainbow. And, powder coating protects MDF products from chips, stains, spills, and scratches.
With specially formulated UV-curable powders the melt and flow can be separated from the curing process and requires minimal heat to cure the powder. After the parts enter an infrared or convection oven where the coating melts and flows for two to ten minutes, the board is exposed to ultraviolet light for just a few seconds for final curing and hardening of the finish. Then the parts cool naturally or in a cooling tunnel before they are unloaded from the coating line.