Mercury UV lamp for paper coating

Sat, 20 Jun 2026 10:02:03 +0800

On the shop floor, “spray-and-dry” in screen is a make-or-break proposition. If the UV lamp doesn’t strike instantly and hold steady output, the line stops, ink migrates, and rejects stack up. In practice, high-response mercury UV lamps are the only way to keep the chain moving without drama. What matters under the hood We run high-pressure mercury vapor lamps built for paper coating lines. The spectral output is broad, with real punch at 365nm and 385nm to match the photoinitiators most inks are formulated around. At the substrate, peak irradiance lands at 800–1200 mW/cm², and we deliver curing energy density of 400–800 mJ/cm² in a 0.3–0.6 second dwell. Cold strike is 1–3 seconds, and warm-up drift stays under 3% over the first 10 minutes. Reflectors use high-purity anodized aluminum with dichroic coatings to shape the spectrum and keep IR heat off the web. Expect 2000–3000 hours of stable output, and less than 5% drop by end-of-life when you stay within rated power density. Why this fits screen printing In screen, the coater has to run 60–120 m/min without waiting around. The lamp’s fast response kills the “wait-for-cure” gap, so the process stays continuous and registration doesn’t drift. The 365–385nm output gives you fast surface cure and through-cure on coated paper, which keeps set-off and blocking out of the conversation. Energy use comes down because the lamp cures on demand, and fewer stops mean fewer wipe-downs and less solvent load on the floor. The details that keep you out of trouble Match lamp power to line speed and ink film thickness, or you’ll spend your day chasing marginal cure and fighting lamp overheating. These lamps need a dedicated ballast and a properly cooled housing—verify connector type, voltage, and airflow direction against your press model. The arc tube runs hot—surface temperature can exceed 600°C—so shielding and interlocks aren’t optional. And confirm ozone management and lamp orientation. Get the alignment wrong, and spectral density shifts while lamp life takes a hit.

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Mercury UV lamp for paper coating