EASI-Plasma Grafting shares some of the similarities with Corona treatment, it is a Dielectric Barrier Discharge (DBD) created in a gap between an electrode and a roller. In this gap the molecule structure on the surface of the material breaks and forms new molecules depending on what other atoms are present in the gap.
Corona treatment uses the air that is already present and what is interesting for many materials from a chemical point of view are the oxygen based groups (blue colour in Figure 1). Whereas Corona uses the uncontrolled atmosphere that is all around us, Grafting uses a 100% controlled nitrogen based atmosphere, which instead creates nitrogen based groups on the surface (red colour in Figure 1).
EASI-Plasma Grafting operates with a nitrogen based atmosphere that can be mixed with other gasses known as dopants, to create other groups, or to tune the quantity of the much desired Amine, Amide and Imide groups. For example higher quantities of Amine groups can be created by adding different dopants and thereby logically there will be less Amide and Imide groups. This way it is possible to tune the chemistry on the surface, not only to achieve good adhesion thanks to high dyne levels, but also to create chemical bonds to inks and adhesives that requires this.
What makes the EASI-Plasma Grafting so unique is the highly controlled atmosphere and the monitoring thereof, unlike older technologies that have been present in the market since the 90s, the EASI-Plasma technology is fully controlled and can be used in big sized production systems as well as lab sized equipment. We offer a royalty free program, so the customer can choose freely where to buy the consumables.
Vetaphone has test equipment available to perform test runs up to 1.2m width and 300 m/min and also to make advanced surface analyses (ATR-FTIR, AFM, XPS, Tof-SIMS, TEM, SEM). Furthermore we can offer to run small scale production or make proof of concept, by processing rolls up to 5.000m of length, to make full scale tests.
Vetaphone offers state of the art plasma technology at atmospheric pressure to the benefit of our customers. The direct benefits of this “all-in-one” eco-efficient plasma process are reduction of costs, energy and impact on the environment.