Apparatus for treating plastics material

Apparatus for treating plastics material, comprising a receiving container, which has a base and lateral walls as well as at its top a charge opening for the material to be treated, tools arranged in the receiving container and carried by a shaft which passes through the base of the receiving container in a sealed manner, said shaft being driven by a motor so as to rotate about its axis, at least one tool being fastened on a tool carrier designed in the form of a disc on the top face of the disc, which disc being situated close to the base of the receiving container so that the plastics material present in the receiving container is set in a circulating movement about the axis of the shaft, wherein the disc carries, in addition to the tools, a plurality of blades which project beyond the edge of the disc in the direction towards the lateral wall of the receiving container, the active surface of the blades being inclined with respect to the horizontal plane in such a way that the plastics material flung off from the disc by the tools is given an upwardly directed movement component during its circulating, and wherein the blades also project upwards and below beyond the disc.