Creating stable adhesive bonds and durable coatings

The roughening of surfaces is one of the key effects of blast technology. Especially when surfaces are to be bonded or coated, a rough structure ensures better adhesion. After all, roughening surfaces changes the adhesion properties. The larger the surface, the larger too are the atomic and molecular interactions that this surface can undergo, and adhesion is improved.

Bonding plastics

After being formed using thermal methods, plastics usually have a sealed and smooth surface. The roughening of surfaces helps to prepare plastic components for bonding technology. In this instance, the bonding plays an important role. If the surfaces are roughened in advance, greater static and dynamic loads are possible after bonding than would be the case if the surfaces had not been roughened. The roughening of surfaces also helps to create durable coatings. The molecules of paint, varnish or sealant can, after all, grip more effectively and more reliably to a rough and therefore larger surface.

The degree of roughness can be finely selected

The degree of roughness for roughening surfaces is easily adjusted through the choice of blast agent and blasting method. Essentially, the blast agent needs to be harder than the workpiece for roughening. Angular grains create the "scratches" on the surface that determine the degree of roughness. The grain size and shape of the blast agent also define the degree of roughness. We supply suitable blasting systems and high-quality blast agents for every application. The quality of the blast agent is crucial for an evenly roughened surface. The blast agent should also not become blunt too quickly either - so that the same blast agent can be used several times over.

Is the roughening of surfaces important for your business? Then contact us for more information about suitable blasting systems and blast media. Call us direct on +49 (0)7741 808 93 0 or let us know your requirements by e-mail at info@sigg-strahltechnik.de.