Spectral distribution gallium lamp

Fri, 05 Jun 2026 06:49:02 +0800

Garment printers know the drill—prints that look fine come off the line, then crack after the first wash. It’s not just the ink or the substrate. Most of the time, the root cause is UV energy that never really got delivered, so the ink layer stays under-cured. Photoinitiators need the right wavelengths to drive full cross-linking. If the lamp’s spectral output doesn’t line up with what the ink absorbs, the surface can feel dry while the polymer network underneath is still weak. What actually matters under the hood Gallium lamps are built around spectral precision. They shift the peak energy away from the standard mercury bands at 254nm and 365nm, putting the punch at 385nm and 405nm. That profile is a direct match for the photoinitiators in flexible textile inks, pushing photopolymerization deeper. The lamp holds a stable peak irradiance above 1,800 mW/cm² across the active band, so you get the energy density needed to cure through the full ink film. And yes, that’s measured at the substrate plane, not out by the lamp anode. Why this fits garment work On the garment floor, the target is a deep, even cure without scorching the substrate. The gallium output profile drives cross-linking through the entire ink layer, not just the top few microns. That builds molecular integrity, and that’s what turns into wash resistance. You end up with a cure profile that can take mechanical agitation and water exposure in stride. In practice, that means fewer rejects from post-wash adhesion failure. The details that make it run Integration comes down to the reflector assembly and lamp positioning. The reflector’s dichroic coating has to be matched to the gallium spectrum so you’re not wasting energy. Check the power supply too—verify arc-start voltage and operating current against the lamp’s spec. And lock down the cure window distance; a 10mm change can knock irradiance down by more than 15%. Plan for solid thermal management at the lamp ends so spectral stability holds across the full service life.

Distribution on UV Light Lab

Spectral distribution gallium lamp