Process gas is ionized into plasma by applying an electric field to it. Plasma treatment is to make use of the properties of these active components to oxidation, reduction, cracking, cross-linking and polymerization and other physical and chemical reactions to change the surface properties of the sample, so as to optimize the surface properties of materials, to achieve cleaning, modification, etching and other purposes.If surfaces must be painted, printed or glued, they need good wettability of the surface to get a good bond. Many surfaces even in a clean state show insufficient wettability exacerbated by impurities. As a result, liquids such as adhesives and inks fall off. This is because the surface tension is very low and insufficient for further treatment. If untreated materials are treated, the result is that paints and varnishes often fail to adhere completely and quickly become loose again, or the bonded parts fall apart. This can be prevented by plasma activation. Plasma activation of the surface increases its surface energy and produces molecular groups associated with the liquid. This emerges through improved wettability and leads to optimal adhesion of the appropriate liquid.
