En el marco de la campaña de pruebas beta del dispositivo piezobrush® PZ3 de relyon plasma GmbH, el SKZ llevó a cabo un estudio sobre el aumento de la adherencia de un adhesivo epoxi de dos componentes a un plástico de baja energía y, por tanto, difícil de adherir, el polipropileno (PP).

Plastics are usually characterized by inert surfaces with surface energies between 20 and 40 mN/m. In order to wet a surface, however, the surface energy of the polymer must exceed the one of the paint or the adhesive. This condition can be achieved through a plasma treatment of the surface and is called «activation“ in plasma technology.