Why Cure the Card Surface?

After personalization and overlay, cards receive a clear coating or varnish that resists abrasion, chemicals and daily handling. Curing converts liquid coating into a solid film in milliseconds, locking in color and protection before collation.

Mercury-Arc UV Curing

Traditional UV systems fire a broad spectrum from a mercury vapor lamp. The intense, multi-wavelength output cures almost any formulation but radiates significant heat.

• Proven on legacy coating chemistry and thick films.
• High peak intensity for fast line speeds.
• Hot emitter requires IR shielding and cooling on the web.

LED-UV Curing

LED-UV emits a narrow, single-wavelength band matched to modern photoinitiators. It is instant-on, cool, and far more energy efficient.

• Near-zero heat - safe for thin overlays and RFID inlays.
• Instant on/off, no warm-up, no mercury waste.
• 20,000+ hour diode life and lower power draw.

Process and Cost Trade-offs

LED-UV costs more upfront but pays back through lamp life, energy savings and fewer rejects from heat deformation. Mercury-arc stays useful where existing chemistry is optimized for broad-spectrum cure.

Card finishing line applying UV or LED-UV cured protective coating.

Selection Quick Reference

For new card lines, LED-UV is the recommended default: lower heat protects inlays and overlays, and the long diode life cuts lifetime cost. Keep mercury-arc only when re-qualifying existing broad-spectrum coatings.