How does the plasma cleaning of plastics work?

The plasma cleaning of plastics is always accompanied  with the activation of the plastic. 

The  plasma cleaning  of  plastics  is always  accompanied  with the  activation  of the plastic. If a plastic is really  only to be cleaned  and not activated, the  process parameters  simply have to be  reduced  until the  desired  effect is achieved. It must be considered whether the  mere cleaning of  a workpiece is sufficient for the subsequent processes  .

Technical oxygen is usually used as the  process gas  ,  but room air is  often sufficient  ; dry and oil-free compressed air is usually used for atmospheric pressure plasma  . The plasma treatment can be repeated and there are  no toxic fumes . 

The principle corresponds to the plasma cleaning of metals.