Apparatus for processing plastic material

An apparatus for the pretreatment and subsequent conveying, plastification or agglomeration of plastics, in particular of thermoplastics waste for recycling purposes, with a container (1) for the material to be processed, where the arrangement has, in the container (1), at least one mixing and/or comminution implement (3) which rotates around an axis (10) of rotation and which is intended for the mixing, heating and optionally comminution of the plastics material,

• where an aperture (8) through which the pretreated plastics material can be removed from the interior of the container (1) is formed in a side wall (9) of the container (1) in the region of the level of the, or of the lowest, mixing and/or comminution implement (3) that is closest to the base,
• where at least one conveyor (5), in particular one extruder (5), is provided to receive the pretreated material, and has at least one screw (6) which rotates in a housing (16) and which in particular has plastifying or agglomerating action, where the housing (16) has, located at its end (7) or in its jacket wall, an intake aperture (80) for the material to be received by the screw (6), and there is connection between the intake aperture (80) and the aperture (8),
• wherein
• the imaginary continuation of the central longitudinal axis (15) of the conveyor (5) or of the screw (6) closest to the intake aperture (80), in a direction opposite to the direction (17) of conveying of the conveyor (5), passes, and does not intersect, the axis (10) of rotation, where, on the outflow side or in the direction (12) of rotation or of movement of the mixing and/or comminution implement (3), there is an offset distance (18) between the longitudinal axis (15) of the conveyor (5) or of the screw (6) closest to the intake aperture (80), and the radius (11) that is associated with the container (1) and that is parallel to the longitudinal axis (15) and that proceeds outwards from the axis (10) of rotation of the mixing and/or comminution implement (3) in the direction (17) of conveying of the conveyor (5), and wherein in the wall section (105) that is part of the housing (16) and that immediately follows the intake aperture (80) in the direction (17) of conveying and that completely surrounds the screw (6), there is a pocket (100) which extends in the direction (17) of conveying, starting at the downstream edge (20′) of the intake aperture (80) or at the furthest downstream point (20) of the intake aperture (80), over a length (L), where 0.8 d≦L≦9 d, preferably 1 d≦L≦7 d, where d is the external diameter or the diameter of the envelope curve of the screw (6) in the wall section (105).