Device for processing material, in particular plastics material, comprising - a shredding unit for shredding and optionally heating the material, in particular a single-shaft shredder, having a shredding housing in which a rotor body, in particular in the form of a roller, that is able to be driven in rotation about its longitudinal axis is provided, which bears a multiplicity of shredding tools on its circumference, and having a feed opening through which the material to be shredded is able to be fed to the rotor body, - a conveying unit, adjoining an output region of the shredding unit, having a housing and a screw, which is mounted therein and is able to be driven in rotation, for conveying and optionally compressing the material output from the shredding unit, wherein the shredding unit or the rotor body is configured in such a way that the material is able to be conveyed in the axial direction of the rotor body towards and through the output region, on the front side of the screw, and wherein the longitudinal axis of the rotor body and the longitudinal axis of the screw are oriented substantially parallel to, in particular coaxially with, one another, - and an extruder, adjoining the screw, having an extruder housing and at least one extruder screw that is mounted therein and able to be driven in rotation, wherein a front-side discharge opening is formed in the housing, via which the material is able to be conveyed into the intake opening of the extruder to the extruder screw, wherein - the central longitudinal axis of the screw is oriented at an angle to the central longitudinal axis of the extruder screw, in particular at an angle of 80° to 100°, preferably 90°, - and the longitudinal axis of the screw is offset with respect to the longitudinal axis of the extruder screw by the offset (v) in the direction of the direction of rotation of the extruder screw at or in the region of the discharge opening or the intake opening, characterised in that the offset (v) is in the range 0 < v < R, wherein R is the radius of the extruder screw. - a shredding unit for shredding and optionally heating the material, in particular a single-shaft shredder, having a shredding housing in which a rotor body, in particular in the form of a roller, that is able to be driven in rotation about its longitudinal axis is provided, which bears a multiplicity of shredding tools on its circumference, and having a feed opening through which the material to be shredded is able to be fed to the rotor body, - a conveying unit, adjoining an output region of the shredding unit, having a housing and a screw, which is mounted therein and is able to be driven in rotation, for conveying and optionally compressing the material output from the shredding unit, wherein the shredding unit or the rotor body is configured in such a way that the material is able to be conveyed in the axial direction of the rotor body towards and through the output region, on the front side of the screw, and wherein the longitudinal axis of the rotor body and the longitudinal axis of the screw are oriented substantially parallel to, in particular coaxially with, one another, - and an extruder, adjoining the screw, having an extruder housing and at least one extruder screw that is mounted therein and able to be driven in rotation, wherein a front-side discharge opening is formed in the housing, via which the material is able to be conveyed into the intake opening of the extruder to the extruder screw, - the central longitudinal axis of the screw is oriented at an angle to the central longitudinal axis of the extruder screw, in particular at an angle of 80° to 100°, preferably 90°, - and the longitudinal axis of the screw is offset with respect to the longitudinal axis of the extruder screw by the offset (v) in the direction of the direction of rotation of the extruder screw at or in the region of the discharge opening or the intake opening,