UV lamp spectral peak 420nm

Tue, 02 Jun 2026 00:51:26 +0800

On a high-speed garment line, hitting true second-level curing comes down to one thing: matching lamp output to the ink chemistry. When the UV ink is tuned for a 420nm photoinitiator window, a generic mercury lamp throws energy into wavelengths the ink can’t use. At line speeds of 100+ meters per minute, that mismatch leaves uncured residue. You end up with tack, set-off, and scrap. What actually matters under the hood We build the lamp around a 420nm spectral peak, not a broad hump. The photoinitiator absorption curve is narrow—if the source peaks at 365nm or 385nm, you’re delivering dose where the ink can’t pick it up. Peak irradiance at the substrate has to be high enough to drive cross-linking inside the dwell window. We measure curing by energy density (mJ/cm²) at the print surface, not by lamp power. And we keep the output profile stable across 3,000–5,000 hours so the dose stays repeatable, shot after shot. Reflectors with dichroic coatings shape the spectral density and concentrate usable photons onto the web, which improves the energy-to-cure ratio. Why this works on textiles Second-level curing on fabric isn’t about heat. It’s about dose delivered in milliseconds. With a 420nm-matched lamp, photons become cross-links immediately, so the ink film goes from wet to handleable in a single pass. That removes the waiting that chokes throughput and cuts out the offline secondary cure. You get more uptime, fewer rejects from smearing, and lower energy draw per cured meter because the energy is targeted, not scattered. What you need to watch on the floor Matching a 420nm source to the press comes down to geometry. Set the lamp-to-web gap, the reflector focal length, and the conveyor speed so the required mJ/cm² lands on the ink, not the substrate. Expect some heat near the lamp head—check the substrate’s thermal tolerance and add localized cooling if you need it. And don’t overlook ozone management: ozone-free designs simplify integration, but the housing still needs proper airflow spacing to keep components cool.

UV lamp wavelength 365nm 420nm

Mon, 01 Jun 2026 05:22:12 +0800

On the floor, you don’t have time to debate whether a cure is “good enough.” You need a curing system that delivers the same energy density, every run, across the full width of the substrate. When the press is humming at full speed, a mismatch between lamp spectrum, ink photoinitiator absorption, and irradiance profile shows up fast—tack, adhesion problems, or uncured depth. That’s why wavelength control and intensity monitoring aren’t checkboxes. They’re the operating system of reliable UV curing.

420nm on UV Lamp Store

UV lamp spectral peak 420nm

UV lamp wavelength 365nm 420nm