A - Z list of keywords and terms from the coatings industry.
An electromagnetic radiation, similar to visible light but of shorter wavelength, which is emitted from the sun and from specially designed lamps. It often has an effect on resins, in some cases causing them (with the help of other chemicals called photoinitiators) to polymerise. In other cases natural UV can cause the breakdown over time of the resin in the cured film. The polymerising property is used in UV curing systems, while additives (UV absorbers) check the destructive properties of natural UV.
A process utilising membrane technology to recover usable paint from certain paint wastes, such as surplus spray ("overspray") from wet paint spraying and excess coating ("Cream coat") from Electro-deposition. These wastes are collected in water. Ultra-filtration concentrates the wash water back to the original application constants of the coating. Not only does this system save paint, the water can be re-used and it reduces the waste which has otherwise to be treated and sent to landfill.
An intermediate part of a coating system, generally applied over primer or previously painted surfaces, which has high obliterating power and ability to provide a more level surface for the topcoat. In protective coating and industrial applications it is often called a 'build coat'.