Black Adhesive from DELO Can Be Light-cured


DELO, one of the world’s leading manufacturers of industrial adhesives for automotive, consumer and industrial electronics applications, now offers a black adhesive that is light-curable. DELO-DUALBOND GE4949, a black-dyed, multi-purpose, modified acrylate can be used for bonding most metals, plastics and glass.

This unique adhesive, designed for light-curing processes, is rare in that it is both black and translucent, allowing the photo initiators in the adhesive layer to decompose and start the crosslinking reaction. A small humidity-curing element is found in the adhesive that triggers curing in small shadowed areas.

DELO-DUALBOND GE4949 is used to bond layers up to 500 µm in thickness. This one-component, solvent-free adhesive has a medium viscosity and a high elongation at tear, offering good tension-equalizing characteristics. 

It can easily achieve high strength and is suitable for sealing and bonding black components on sealing wires, covering lettering, bonding clips or emblems and connecting terminals.

Robert Saller, director of sales international and management board member of DELO, said, “This new adhesive helps us meet our clients’ request for black adhesives that cure within seconds using light. As we move forward, we will continue to expand our line of black adhesives, and focus on light-activated epoxy resins that can be cured at thicknesses up to 1 mm.” 

DELO-DUALBOND GE4949 is used in temperatures ranging from -40°C to +120°C.

This new adhesive cures best with visible light in a wavelength 400 nm and by humidity in shadowed areas.

Technical Specifications

  • Light-curing black adhesive
  • Bond layers up to 500 µm in thickness
  • Secure adhesion on multiple surfaces (plastic, glass, metal)
  • Medium viscosity

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