Curing UV Dual-Cure Adhesives

Q: What wavelength cures uv dual-cure adhesives?

UV Dual-Cure Adhesives in this class commonly cure at 365 nm, 395 nm, 405 nm. UV sets the exposed adhesive instantly for fixturing; the secondary cure hardens the shadowed volume over time. Removes the line-of-sight limitation of pure UV. Confirm the exact band on your adhesive datasheet.

Q: Which UV system should I use for uv dual-cure adhesives?

SunSpot 2. The UV portion cures fast under any source; a broad-spectrum SunSpot 2 removes wavelength as a variable while the secondary mechanism handles the shadow. Match the UV band if you use an LED system.

Adhesives that cure by UV where light reaches and by a secondary mechanism, heat, moisture, or activator, where it doesn’t. The reliable answer for shadowed joints and blind holes.

Chemistry family

Dual-cure (UV + secondary)

Cure mechanism

hybrid

Common cure bands

365 nm / 395 nm / 405 nm

How It Cures

UV sets the exposed adhesive instantly for fixturing; the secondary cure hardens the shadowed volume over time. Removes the line-of-sight limitation of pure UV.

Through a substrate: Use wherever part of the joint is hidden from any light path.

Recommended system

SunSpot 2 ›

The UV portion cures fast under any source; a broad-spectrum SunSpot 2 removes wavelength as a variable while the secondary mechanism handles the shadow. Match the UV band if you use an LED system.

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Always confirm the exact cure wavelength and dose on your adhesive’s own datasheet, this page describes how the chemistry class behaves, not a specific product.

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