Abstract: A method of producing a toothed belt having teeth and grooves and a polymeric film cover thereon comprising the steps of rotating a forming wheel comprising alternating cavities and protrusions which correspond in cross section to a cross section of said toothed belt, extruding heated extrudable material onto the forming wheel, feeding a reinforcing member onto said forming wheel, feeding a polymeric film onto said forming wheel between the reinforcing member and the forming wheel, pressing said polymeric film into said cavities and upon said protrusions with said heated extrudable material thereby forming a polymeric film cover on the teeth and grooves, and cooling the toothed belt.