UV adhesives are acrylate- or epoxy-based resins which polymerize and thus cure by irradiation with special UV light sources. These uv adhesives are used mainly in industrial settings because they cure in a matter of seconds, allowing a high production output.
UV adhesives can be cured with both UV gas discharge lamps and UV LED lamps. Unlike LED light sources, which emit monochromatic light, gas discharge lamps have a broad light spectrum. For curing adhesives, the UV portion at different wavelengths within the light spectrum of gas discharge lamps is used at the same time, while the light spectrum of LEDs is limited to a specific wavelength.
Some special acrylate and epoxy based adhesives also cure under visible light at wavelengths of 405 nm or more. These are used, for example, for bonding UV-impermeable plastics.
With its Vitralit® brand Panacol offers a broad range of UV adhesives. As a member of Hoenle Group and as a partner of UV equipment manufacturer Hoenle, innovative UV- and UV-LED curing systems are also available from Panacol.