DELO brings light to the dark side 27 September 2016

DELO Industrial Adhesives LLC has introduced black adhesives, including the DELO-DUALBOND® GE4949, which are light curable and suitable for use in many applications.

For light curing processes adhesive needs to be translucent so that photoinitiators in the entire adhesive layer can decompose and start the crosslinking reaction. Because black absorbs the majority of light, the amount that is transmitted becomes naturally lower as the layer gets thicker.

However, the black dyed DELO-DUALBOND® GE4949 acrylate can be used for thicknesses of up to 500µm. In addition to its light curing component, it also contains a small humidity curing portion, which triggers crosslinking even in small shadowed areas. 

The acrylate is medium viscous, has very good tension equalising characteristics — thanks to a high elongation at tear, and achieves high strength on various plastics. It is particularly suitable for sealing and bonding for black components. This includes sealing wires, covering lettering, bonding clips or emblems, as well as sealing connecting terminals. 

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889

Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.

Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.