The invention relates to an apparatus for the pretreatment and subsequent conveying or plastification of plastics, with a container with a mixing and/or comminution implement that is rotatable around an axis of rotation, wherein, in a side wall, an aperture is formed, through which the plastics material can be removed, a multiscrew conveyor being provided, with at least two screws rotating in a housing, wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, where, on the outflow side, there is an offset distance between the longitudinal axis of the screw closest to the container, on the outflow side, and the radius that is parallel to the longitudinal axis, and in that the screws co-rotate.

The invention relates to a method and a device for introducing and/or adding non-dry-powder additive materials and/or coating materials with a liquid, solid, semi-solid, or paste-like consistency or in suspended or emulsified form, for example, peroxides, fats, waxes, IV improvers, polymers, or similar materials, to an existing lumpy or particulate material which is moved and mixed, and optionally warmed and reduced to small pieces in a receptacle and/or compressor (1), said material being in particular polymer particles and/or flakes, wood fibers, paper cuttings, or similar materials. According to the invention, the additive material is introduced below the level of the material and/or material particles already in the receptacle (1).

The invention at hand relates to a rotor disk (1) to be inserted into a receptacle (2) for the treatment of polymers, having a disk body (3) on whose top side (4) mixing and/or comminuting tools (5) are providable and on whose opposite underside (6) a number of conveying ribs (7) extending from the interior to the exterior are provided with which during operation polymer particles are transportable towards the exterior or, respectively, that during operation exert a force directed from the center (8) of the rotor disk (1) towards the exterior on the polymer particles grasped by the conveying ribs (7). In accordance with the invention it is provided that the conveying ribs (7) are curved concavely in the direction of rotation or, respectively, of movement.

The invention relates to a device and a method for processing materials that contain or consist of polymer materials, in particular for processing, during recycling, soiled thermoplastic polymers. The device comprises an extruder (2) having a screw (10) for melting the materials, also having a first filtering unit (3) for filtering the melt and a degassing zone (5) for degassing the melt. According to the invention, a melt pump (6) is connected, at the extruder outlet (9), to the degassing zone (5) or after or downstream of the screw (10).

What is disclosed is a method of processing and/or recycling materials, especially thermoplastic materials,wherein the material is agitated and mixed in a receivingvessel (1), especially a cutting compressor or a preconditioning unit (PCU), and optionally also heated, comminuted and/or softened, wherein the material in the receiving vessel (1) remains in the form of pieces or particles and unmoltenthroughout, andwherein the material in piece orparticle formbeing agitated within the receiving vessel is subjectedto inline spectroscopic and/or spectrometric analysis and/or measurement, wherein the measurements ascertained in this way are employed to obtain Information about the material being analysed in each case, especially quantitative and/or qualitative indices of the respective material. Likewise disclosed is an apparatus comprisingat least one receiving vessel (1), especially a cutting compressor, having a mixing and/or comminuting device for the material,at least one spectroscopic and/or spectrometric measuring apparatus (10) for inline analysis of portions of the material in piece of particle form being agitated within the receiving vessel (1), which is designed to emit a physical Stimulus, especially electromagnetic radiation, for excitation of the rotating material in piece of particle form andto detect the measurement Signals that arise in reaction to the Stimulus, especially characteristic spectra of the electromagnetic radiation scattered on the material analysed, preferably by spectrometric means, anda Processing and control unit (40) which is in data communication with the measurement apparatus (10) and is designedto actuate the measurement apparatus (10), to emit the physical Stimulus, especially electromagnetic radiation, and to detect the resultant measurement Signals and to hold the measurements ascertained in this way available andoptionally, on the basis of the measurements ascertained, to derive and hold available Information concerning the material analysed in each case, especially quantitative and/or qualitative indices of the respective material.