The present invention relates to a method for treating a plastic and/or paper waste material having steps including collecting a plastic and/or paper waste material, preferably paper, and highly preferably a release coated cellulose or polymeric sheet material. The material already includes a selected new-use additive preferably selected from flame retardant, hydrophobic material, pesticide, herbicides, minerals, nutrients, and/or mixtures thereof. The method includes the step of preparing the collected material by mixing, separating foreign bodies like metals, etc., and feeding it to a grinding station. The method also includes the step of, in one or several grinding stations, shredding and grinding the materials into small pieces.
展开▼