. . "The process of claim 1, wherein the polyolefin granulates comprises polyolefin which is selected from the class encompassing polyethylene, polypropylene, poly-1-butene, polyisobutene, poly-4-methyl-1-pentene, copolymers of ethylene and propylene, terpolymers of ethylene, propylene and other hydrocarbons, mixtures of polypropylene, rubber and polyethylene and mixtures of the constituents mentioned" . .