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Subject: Powder coating that cures by ultraviolet light is a new technology that combines many of the advantages of conventional thermosetting powder coatings with those of liquid UV-curable coatings.
Preparation, handling and spraying procedures for a UV-curable powder formulation are similar to those for a thermosetting powder formulation. But in UV-curable powder coatings, melting/flow-out and curing are two separate processes. Upon exposure to heat, UV-curable powder coatings melt and flow into a smooth film. Cross-linking occurs when the molten film is exposed to UV light.
