Patent ID: 7275703

Claim:
A device for the preparation of plastics material for recycling purposes comprising a container which has an inlet opening at the top for the material to be processed, wherein at least one movable mixing and/or comminuting tool is arranged in the container, and the material treated by this tool is fed through an outlet opening which is arranged at the bottom of the container and to which the feed opening of a housing of an apparatus comprising at least two screws is fluidly connected, the at least two screws being jointly charged with material coming from the container, a diameter of the container and a diameter of each of the screws having the following relationship: D ÷ 10 3 {square root over ( d 2 K )}, where D is the inner diameter of the circular cylindrical container in mm or a theoretical inner diameter of a circular cylindrical container converted to the same capacity and having the same effective height, d is the screw diameter in mm, and K is a constant greater than or equal to 50.