PET is a polymer material, the full name is polyethylene terephthalate. This material is widely used in many technical fields such as packaging, anti-corrosion coating, capacitor preparation, magnetic tape and even medicine and health. However, this material has low surface energy and poor wettability, so it often encounters obstacles in the application process.

The different surface properties of polymer materials will be used in different fields. To obtain different surface properties, it is necessary to use plasma surface modification technology. One is to use plasma cleaning technology to produce a new surface active layer on the surface of the PET material, thereby changing the basic characteristics of the surface and interface. The second is to coat the surface of the raw material with the help of function or surface layer formation technology. These two methods are to make polymer materials have or have several surface properties at the same time, paving the way for subsequent applications.

Plasma treatment technology does not distinguish the processing objects, and is especially suitable for high polymer materials that are not heat-resistant, such as polypropylene, polyvinyl chloride, polytetrafluoroethylene, polyimide, polyester, epoxy resin and other polymers. Plasma can be used for treatment, and the entire, partial or complex structure of the material can be selectively cleaned.