For the processing and end use of materials, the surface quality is of enormous importance. This can be influenced by targeted surface treatment to achieve a perfect end result. For example, purity and surface energy are relevant for adhesion before bonding, printing, painting or coating. In this context, the wettability and adhesion behaviour to dirt and water is also decisive for many materials and applications, where the wettability of the surface depends on the surface tension of the substrate.
Often the poor wettability of plastics, metals and inorganic materials is not sufficient for a permanent bond between e.g. adhesive or printing ink and substrate. Surface treatment with plasma increases the surface tension, which improves wettability and consequently adhesion.
After plasma activation, success can be measured using contact angle measurement and test inks.