Reactive Epoxy Resin Hot-Melt Adhesives

These at room temperature plastic/hard one-component systems are usually processed in adhesive melting drum installations. Adhesive heating occurs by means of heated panels that, depending on the consumption, continuously sink in the drum and heat the adhesive in layers until the curing reaction and viscosity reduction set in. The adhesive melt is pumped to the application appliances by thermally insulated hoses that are also heated. While the melt is solidifying, the final curing occurs in the glueline and results in an adhesive layer (just like a hot-melt adhesive, Section 5.1) due to the chemical reaction described in Section 4.1.1. 

The advantage of such adhesive layers is their high long-term heat resistance compared to normal thermoplastic hot-melt adhesives, owing to their thermoset degree of crosslinkage. 

The epoxy resin hot-melt adhesives are mainly applied in car manufacture, for example, in relining by bonding (engine bonnet, tailgate). 

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