The durability of adhesive bonding is decisively influenced by the surface finish of the joining parts. In particular, the wettability of the surfaces and the presence of energetically active centers are necessary preconditions for the formation of sufficiently high adhesive forces. In order to produce these properties on the substrate surfaces, various surface pretreatment methods can be applied after cleaning processes.

The surface pretreatment methods are applied to:

• cleaning and activation of joining surfaces
• improvement of surface wettability
• ensuring the reproducibility of adhesive compounds
• Increasing the durability of the bonds