Powder Coating is a method of applying a decorative and protective finish to a wide range of parts and materials. The powder coating process uses very fine dry particles of resin with the pigment color of your choice.
The resin powder is applied with a spray gun similar in concept to applying solvent based paint, however, powder coating uses an electrostatically charged technique in which the powders are charged as they move through the spray gun causing them to stick to the grounded part just like metal to a magnet. This allows the powder to adhere to the part through the next step: curing.
The curing process involves heating the coated parts to 400 degrees F for a predetermined amount of time. During this time the powders are melted and fused together to form a very strong and durable finish.
The parts are then allowed to cool and are ready for use immediately.
Powder coatings can resist cracking, peeling, or marring, which can minimize shipping and handling damage. The finish reduces porosity - resulting in fewer surface imperfections. Extremely abrasion, corrosion, and chemical resistant, powder coatings provide a finish superior to other organic coatings.
Powder coatings, consisting of 100% solids, are organic compounds that meet and exceed EPA standards. The need for costly air pollution control equipment is eliminated since no solvents are released into the atmosphere. Waste is negligible - power over-spray can be reclaimed for subsequent use. Unlike traditional Coating Methods, Inc., no primers are required with most powder coating processes. In addition, cleanup is performed without the use of solvents and health & safety concerns are minimized due to a clean work environment.
Powder coatings offer excellent uniformity during application - eliminating sags, drip marks and other surface irregularities. Textured finishes - such as wrinkle finishes - not only are aesthetically pleasing, but also help conceal metal surface imperfections. Other visual effects are available in various colors and gloss levels. Powder coated parts can be machined and most can be re-coated.
The use of powder coatings reduces equipment, energy, labor and waste disposal costs compared to conventional liquid systems. Powder is supplied in a ready-to-use condition - no mixing or viscosity control is necessary. A wide variety of coating chemistries can be applied with the same equipment, desired film thickness can be achieved in a single pass for most applications, and the process results are fewer rejected parts.
The Advantage: Unlike traditional wet spray painting methods, powder coating is an advanced yet simple paint application that when applied properly, the powder coated finish is far superior to wet paint due to its incredible durability and resistance to chipping and scratching.