Does your adhesive need to be solvent-free from now on, and are you seeking to eliminate the primer process? Do you need to preclean and activate your components in a single step? Do you need to save costs, increase quality or reduce the scrappage rate? And above all, what do you do if A will not bond to B?
Plasmatreat will be tackling these and many other adhesive challenges LIVE at the Bondexpo in Stuttgart. Rather than focusing on systems and devices, this year the market leader has decided to demonstrate its expertise in customized problem-solving, application-specific processes and personal support for customers at the implementation stage.
"The more complicated the challenge, the more interesting it is to draw on our experience gained over more than two decades to find a solution," says sales manager Joachim Schüßler in describing what motivates them.
Visitors whose components are causing them adhesive problems can also get Plasmatreat to test and plasma-treat them on the stand – no matter what they are made of. A Krüss Mobile Surface Analyzer (MSA) will be used to measure the contact angles before and after plasma treatment to determine the surface energy. The results provide valuable information about the wettability of the surface, which is the basis for any subsequent adhesion setup.
After the first measurement, the test specimen is cleaned and activated with Openair plasma in a mobile application laboratory. To increase the surface energy, the surface is activated by the chemical and physical interaction of the plasma with the substrate. The treatment makes a non-polar plastic polar and increases its surface energy. Aluminum and glass have naturally high levels of surface energy which is responsible for their good adhesive characteristics, but it is often compromised by layers of organic deposits or other contaminants. This is where the microfine cleaning action of the plasma comes into play, revealing once again the high level of surface energy already present in the substrate.
After plasma treatment lasting no more than a matter of seconds, the contact angle is remeasured. Now visitors can see for themselves exactly what effect modifying the material surface with atmospheric pressure plasma has on their components. In theory, components can be further processed immediately after treatment.