Switching a UV Cure Process from Arc Lamp to LED
Arc lamps are broad and powerful, but they dim over life, need warm-up, and eat consumable lamp modules. Moving a settled process to LED trades broad spectrum for a fixed wavelength, and buys instant on/off, stable output, 20,000-hour sources, and no more lamp swaps. The migration is mostly a wavelength match and a dose requalification.
An arc lamp emits many wavelengths; an LED emits one band. If your adhesive cures in a band the SkyBeam offers (365/385/395/405 nm), you can requalify the process on LED and keep it there for years without lamp aging or warm-up drift. The catch is confirming your chemistry cures at an available LED band.
The SkyBeam gives you the four common cure bands, instant on/off with no warm-up, per-channel programmed timers, and 20,000-hour LEDs, the whole point of leaving arc behind. Confirm your adhesive’s band first; if it truly needs broad spectrum, stay on the SunSpot 2.
Step by Step
- 1 Confirm the adhesive’s cure band. Check the datasheet: does it cure at 365, 385, 395, or 405 nm? If yes, LED is viable. If it needs broad-spectrum UVB/UVC, keep the arc source.
- 2 Match the wavelength. Order the SkyBeam guide at the band your adhesive wants. The wavelength is the single most important migration decision.
- 3 Requalify the dose. Your arc dose won’t transfer directly. Measure LED intensity at the joint and set the timer to hit the adhesive’s target dose; verify a good cure on scrap.
- 4 Lock the recipe. Program the channel timer, record the LED life-log baseline, and document the new recipe. Instant on/off means no warm-up variability to manage.
- 5 Bank the gains. No lamp module to replace, no warm-up, stable output over 20,000 hours, fold the removed consumable and downtime cost into the payback.
Common Pitfalls
- Assuming the arc dose transfers, LED intensity and spectrum differ; requalify from scratch.
- Migrating a broad-spectrum chemistry, if it needs UVB/UVC, no single LED band will cure it; stay on arc.
- Skipping the LED-life baseline, log it at qualification so future drift is measurable.
Questions
Can I replace my arc-lamp UV curing with LED?
If your adhesive cures at an available LED band (365/385/395/405 nm), yes, and you gain instant on/off, no warm-up, stable output, and 20,000-hour sources with no lamp swaps. Requalify the dose on LED; it won’t transfer directly from the arc process. If the chemistry needs broad-spectrum UVB/UVC, keep the arc source.
What do I gain moving from arc to LED UV curing?
Instant on/off with no warm-up, output that doesn’t dim like an arc lamp, roughly 20,000-hour LED life, and no consumable lamp modules to replace, at the cost of a single fixed wavelength instead of broad spectrum.
Will my arc-lamp cure time be the same on LED?
Not necessarily, LED intensity and spectrum differ, so measure the delivered dose with a radiometer and reset the timer to hit your adhesive’s target. Verify on scrap before committing the line.
