What is UV coating and how does it cure?

What is UV coating and how does it cure?

• A. A UV-cured clear coating that dries instantly under ultraviolet light for protection and gloss
• B. A water-based coating that dries slowly
• C. A heat-activated film
• D. A pressure-sensitive laminate

Answer: (A)

UV coating is a clear protective layer that cures when exposed to ultraviolet light. It contains photoinitiators that absorb UV energy and trigger polymerization, linking the resin molecules into a solid, crosslinked film. This rapid reaction happens under a UV lamp, so the coating hardens instantly and provides both protection and a high-gloss finish. The other descriptions describe coating or film types that don’t use light to cure: a water-based coating relies on evaporation and dries more slowly, a heat-activated film uses heat to activate adhesion or change properties, and a pressure-sensitive laminate adheres by pressure rather than curing with light.

UV coating is a clear protective layer that cures when exposed to ultraviolet light. It contains photoinitiators that absorb UV energy and trigger polymerization, linking the resin molecules into a solid, crosslinked film. This rapid reaction happens under a UV lamp, so the coating hardens instantly and provides both protection and a high-gloss finish. The other descriptions describe coating or film types that don’t use light to cure: a water-based coating relies on evaporation and dries more slowly, a heat-activated film uses heat to activate adhesion or change properties, and a pressure-sensitive laminate adheres by pressure rather than curing with light.