the present invention relates generally to utilizing gasses for fragmenting polymeric materials and simultaneously modifying the surface area molecular structure of the said polymeric materials . more particularly , the present invention relates to a method and associated device for the processing of already preliminarily deformed polymeric materials , preferably without metal reinforcing elements , by utilizing aggressive gasses to both modify the polymeric materials surface area into an activated state and also simultaneously fragment the fed preliminarily deformed polymeric materials into a powder - like form with a relatively increased surface area .