Coatings are intended to be used for many purposes - applying color, changing surface finish and texture, providing a protective coating etc. Exterior coatings in particular present many challenges due to the many elements of an exterior environment. While there are more and more low VOC coating on the market today, powder coating is an environmentally sound way to coat metals.Below is an overview of the powder coating processing taken from Forms & Surfaces.
OVERVIEW
Powder coating is a dry finishing method in which electrically charged particles of pigmented resins are sprayed onto a product. Electrical grounding of the coated object causes the charged powder to adhere to the surface. When baked in a curing oven the deposited powder melts and fuses together to form a continuous, cross-linked coating. Powder coat finishes are attractive, uniform and highly resistant to corrosion, abrasion, cracking, chipping, chemicals and ultraviolet degradation. Powder coating is also environmentally friendly: Compared to solvent-based coatings, the dry process releases negligible amounts of harmful VOCs.
For more info on Powder Coating check out the Powder Coating Institute.
1 comment:
I agree with this, Mike. The reason why I prefer powder coating is because of its green credentials. Paint contains solvent, a chemical that is hazardous when inhaled, and it also contributes to air pollution and ozone depletion. On the other hand, the dust that’s used in powder coating can be safely eliminated by exhaust filters.
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