UV Basics

// UV varnishes and inks are hardened (cured) - and not dried

The coating curing process uses ULTRA-VIOLET light  energy from the visible spectrum in wave lengths from 200 to 480 nm. UV energy “cures“ inks and varnishes in a fraction of a second. A UV curing system consists essentially of the following components:

  • UV lamps,
  • Reflectors,
  • Lamp housings,
  • Cooling systems 
  • Intelligent operating and control systems
  • Additional options can also be added as desired

Duo-Technik manufactures to the highest quality standards; with meticulous calibration of the UV units and the seamless integration of the UV system into the production process.

With conventional drying, the liquid in the coating is evaporated by warm air or InfraRed energy. The dry film thickness is thinner than the wet coating thickness.

Ultraviolet curing is a photochemical process using high-intensity UV light to instantly cure or “harden” inks and coatings. The actual coating thickness remains unchanged.