UV curing lamp for glass bonding

Fri, 03 Jul 2026 11:13:48 +0800

On the press, speed isn’t the only constraint. You need consistent cross-linking on glass—no micro-voids, no heat stress, and no adhesion coming undone. In glass bonding, the lamp has to deliver a stable dose right at the bond line, day after day, even when line speed and ambient temperature are moving around.

What matters, technically

With glass bonding, it comes down to spectral output and irradiance. If those aren’t right, the photoinitiator won’t fully respond before the fixture clears the cure zone. A high-pressure mercury vapor lamp, built for stable output, typically gives you strong peaks at 365 nm and 395 nm, plus solid output across the UVA band. That broad-band profile lines up with the photoinitiators in adhesives and coatings used on glass, so you get a fast surface cure and the deeper through-cure you need where it counts. Spec the lamp power based on application width and the energy density you have to hit. For example, a 120 W/cm lamp running at 10 m/min can land around 800 mJ/cm² at the substrate—assuming the reflector keeps tight focal control. Peak irradiance at the bond line has to be high enough to push through absorption and shadowing. So we pair the lamp with a dichroic-coated reflector that cuts IR heat load and keeps substrate temperature within tolerance. Lamp life is predictable: with the right ballast and cooling, output holds within ±5% for 2,000–3,000 hours, then drifts down gradually. Keep a radiometer on it, and swap lamps before the dose drops below the adhesive’s threshold.

Bonding on UV Curing Global

UV curing lamp for glass bonding

What matters, technically