Reactive adhesives

The reactive hot-melt adhesives on the basis of polyurethane and polyolefin are becoming increasingly important. 

They enable constructive bonds to be achieved.

The principle behind these moisture-curing hot-melt adhesives is a two-stage setting mechanism. After the reactive PUR hot melt has been applied, it first sets physically, giving the bond a handling strength.  

In the second step, the adhesive reacts chemically with the available humidity to form high molecular weight polymers with high cohesion. The speed of the reaction depends on the available humidity.

In this way, exceptionally high temperature resistance can be achieved, with good flexibility at low temperatures and resistance to a large number of chemicals. Standard PUR hot melts with an MDI content > 0.1 % are subject to labelling.

Another group in the field of reactive hot-melt adhesives are the formulations based on silane-modified polyolefins. These are distinguished from PUR hot melts in particular by the fact that a bonding of non-pretreated polypropylene is possible. In addition, they do not contain any isocyanates and are therefore not subject to labelling. The cohesive properties, on the other hand, are below those of polyurethane-based adhesives.

Your advantages when using reactive PUR / POR products:

Our product range

Further adhesives on request.