On a wood floor coating line, the target is straightforward: a tough, high-gloss finish that can keep up with production speed. Underpowered curing? You end up with a coating that never fully cross-links—still tacky, easy to scratch, and flat-looking. The fix begins by aligning the UV lamp’s spectral output with the photoinitiator in the coating and the line speed. What actually matters, technically We lean on high-pressure mercury vapor lamps because their output stays stable across the key wavelengths: 365 nm for deep penetration, plus 313 nm and 385 nm for surface cure and gloss development. Peak irradiance at the substrate has to clear the coating’s threshold, so cross-linking starts before the conveyor carries the piece out of the cure zone. A dichroic-coated reflector focuses the energy, boosting the effective dose (mJ/cm²) right at the nip point. Match the ballast and ignition to the lamp’s arc length and power density. Mismatched ballasts chew up electrodes early and push the spectrum around. Why this setup earns its keep on wood floors Thick wear layers need real 365 nm energy to cure all the way through without yellowing. On a line running 120–150 m/min, you need a lamp that can hold 800–1200 mJ/cm² at the coating surface. We pair the lamp with an ozone-free quartz sleeve and a focused reflector to keep the dose consistent across the full width—so you get a hard cure that resists scratching and holds the gloss. Things you can’t gloss over Equipment matching isn’t optional. For offset, flexo, screen, and gravure, the lamp length, arc gap, and connector type have to line up with the printer’s UV module. If you’re dropping the lamp into an existing hood, verify airflow, cooling, and shutter compatibility. Plan on reflector calibration every 2000 hours. That efficiency loss hits harder than the gradual decay in lamp output.