Abstract: A method for adapting a pressing force of at least one blade of a granulating machine for granulating material strands, such as plastic material strands. The granulating machine has a force generating means for pushing the at least one blade with the pressing force against a perforated plate of the granulating machine. The method includes the steps of specifying a blade pressing force; determining a hydrodynamic force, such as axial pressure force, which is generated by rotation of the at least one blade and acts on the at least one blade towards the perforated plate; determining the pressing force on the basis of the specified blade pressing force and the determined hydrodynamic force; and providing the determined pressing force to adapt the pressing force prevailing in the granulating machine. Also disclosed are a corresponding computer program product, a controller, a granulating machine, and a method for granulating material strands.

Abstract: A cellular wheel sluice for bulk material comprises a housing having an interior, an extraction side cover releasably fastened to the housing, a cellular wheel which is arranged in an operational position in the housing so that it can be driven in rotation about a longitudinal axis and which is held on the extraction side cover, an extraction device for displacing the cellular wheel between the operational position and an extracted position, wherein the extraction device has a guide unit for guided displacement of the cellular wheel along an extraction direction parallel to the longitudinal axis, and an extraction drive arranged fixed to the housing and coupled to the extraction side cover for automatically driven displacement of the extraction side cover with the cellular wheel.

Abstract: A hosing cleaning device for cleaning a housing of a screw machine comprises a support unit displaceable relative to the housing, and at least one housing cleaning unit arranged at the support unit for cleaning an inner wall of the housing, wherein the least one housing cleaning unit can be reversibly inserted into the housing. An associated shaft cleaning device for cleaning at least one treatment element shaft of the screw machine comprises a cleaning chamber, in which the at least one treatment element shaft can be arranged, and at least one shaft unit arranged in the cleaning chamber.

Abstract: A feeding screw machine serves for feeding a processing screw machine. The feeding screw machine comprises a housing with at least one housing bore formed therein. An associated screw conveyor shaft is rotatably disposed in the at least one housing bore to convey material in a conveying direction from a supply opening to a feeding opening. An emptying opening is formed in the housing. The emptying opening enables an easy, fast and reliable emptying and cleaning of the feeding screw machine independently of the processing screw machine.

Abstract: A strand pelletizer for pelletizing a strand of material comprises at least one cutting edge and an opposite cutting edge. The opposite cutting edge is arranged on a base body which is displaceable relative to a support body. The base body is independently displaceable in a linear manner relative to the support body and pivotable about at least one pivot axis. The strand pelletizer enables simple and precise adjustment of the opposite cutting edge and an associated cutting gap.

Abstract: A housing cleaning device for cleaning a housing of a screw machine comprises a support unit displaceable relative to the housing, and at least one housing cleaning unit arranged at the support unit, for cleaning an inner wall of the housing, wherein the at least one housing cleaning unit can be reversibly inserted into the housing. An associated shaft cleaning device for cleaning at least one treatment element shaft of the screw machine comprises a cleaning chamber, in which the at least one treatment element shaft can be arranged, and at least one shaft cleaning unit arranged in the cleaning chamber.

Abstract: Cleaning apparatus for cleaning an installation component of a conveyor system for conveying bulk material, comprising: at least one cleaning tool for cleaning at least a part of the installation component, and a carrier section for fastening the cleaning apparatus to the installation component, to a transport device, and/or to an external object, wherein the cleaning apparatus is designed to independently initiate a cleaning process for cleaning at least a part of the installation component, and a cleaning system including such a cleaning apparatus, and a service station, an assembly comprising the cleaning apparatus, and the installation component and a conveyor system.

Abstract: In a method for recycling plastic waste material, plastic waste material is supplied to a first screw machine and melted therein to form a plastic waste material melt. The plastic waste material melt is supplied to a second multi-shaft screw machine by means of a supply device and is processed therein together with plastic raw material to form a plastic material melt.

Abstract: In a method and a device for producing a powder coating melt, firstly a first powder coating melt is produced from a powder coating premix by a screw machine. Powder coating particles are supplied to the first powder coating melt. Then a second powder coating melt is produced by mixing the first powder coating melt and the powder coating particles by the screw machine. This allows a simple, gentle and efficient recycling of powder coating particles, in particular of so-called off-spec powder coating particles.

Abstract: A cellular wheel sluice for bulk material comprises a housing (2) having an interior (3), an extraction side cover (18) releasably fastened to the housing (2), a cellular wheel (8) which is arranged in an operational position in the housing (2) so that it can be driven in rotation about a longitudinal axis (7) and which is held on the extraction side cover (18), an extraction device (20) for displacing the cellular wheel (8) between the operational position and an extracted position, wherein the extraction device (20) has a guide unit (21) for guided displacement of the cellular wheel (8) along an extraction direction (41) parallel to the longitudinal axis (7), and an extraction drive (34) arranged fixed to the housing and coupled to the extraction side cover (18) for automatically driven displacement of the extraction side cover (18) with the cellular wheel (8).

Abstract: Method for processing plastics material, comprising the following steps: feeding the plastics material into a screw machine by means of a feeding device; plasticizing the fed plastics material by means of the screw machine to form a polymer melt; and processing the polymer melt by means of the screw machine, wherein the viscosity of the polymer melt is set by means of the screw speed of the screw machine, and device for processing plastics material.

Abstract: A method for processing plastics material, in particular thermoplastic material, such as plastics recycling material and/or plastics waste, is disclosed comprising the following steps: supplying the plastics material into a screw-conveyor machine); supplying an additive for converting organic chlorides into inorganic chlorides into the screw-conveyor machine; plasticizing the supplied plastics material with the screw-conveyor machine to form a plastics melt, and mixing the plastics melt with the supplied additive with the screw-conveyor machine to form a mixture, wherein at least some of the organic chlorides contained in the plastics melt are converted into inorganic chlorides with the additive. A corresponding device for processing plastics material, in particular thermoplastic material, such as plastics recycling material and/or plastics waste, using a screw-conveyor machine is also disclosed.

Abstract: A device for processing plastics material, comprising: a multi-shaft screw machine, in particular a twin-shaft screw machine, having at least two treatment element shafts mounted in a housing for plasticizing the supplied plastics material to form a plastics melt, wherein the multi-shaft screw machine has a plasticizing zone, a discharge zone, and a backup zone arranged between the plasticizing zone and the discharge zone, having at least one backup element which holds back the plastics melt; at least one melt channel which bridges across the backup zone, connecting the plasticizing zone and the discharge zone to one another, and at least one melt filter device for filtering the plastics melt, arranged and active in the melt channel.

Abstract: A device for processing plastics material, comprising: a screw machine having at least one treatment element shaft for plasticizing the plastics material, stored in a housing, to form a polymer melt, wherein the screw machine has a plasticizing zone, a compounding zone, and an accumulation zone arranged between the plasticizing zone and the compounding zone, having at least one accumulation element which holds the polymer melt, at least one melt channel which bridges the accumulation zone and connects the plasticizing zone and the compounding zone to one another.

Abstract: A treatment element for a treatment element shaft of a screw machine comprises a main body with an outer wall, wherein the outer wall has a first wall section and a second wall section and wherein the first wall section is harder than the second wall section.

Abstract: A device for producing a dyed plastic melt and an undyed plastic melt includes a multi-shaft screw extruder, a first metering installation, a second metering installation, and a control installation, selecting between a first operating mode for producing the dyed plastic melt and a second operating mode for producing the undyed plastic melt. The first metering installation feeds an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation feeds at least one dyeing agent through a second infeed opening into the housing. In order for the undyed plastic melt to be produced, the plastic material is fed exclusively via the first infeed opening such that residual dyeing agent which is still located in the second metering installation or in the region of the second infeed opening does not contaminate the undyed plastic melt.

Abstract: A recovery system for recovering plastic recycling material includes at least one rinsing chamber designed for heating and rinsing the plastic recycling material and having a rinsing air feed for feeding heated rinsing air into the at least one rinsing chamber; and at least one cooling chamber designed for cooling the plastic recycling material and having a cooling air feed for feeding cooling air into the at least one cooling chamber. The at least one cooling chamber is connected downstream of the at least one rinsing chamber and is fluid-connected to the rinsing air feed via an exhaust air line in such a manner that the exhaust air heated in the at least one cooling chamber by the plastic recycling material can be fed into the rinsing air feed of the at least one rinsing chamber. Use of such recovery system and method for recovering plastic recycling material.

Abstract: A heating apparatus for at least one housing section of a screw extruder comprises at least two heating elements which are connected to contact plugs via connection lines. For the purpose of supplying power, the heating apparatus comprises an electrical supply line which is connected to a plug-in contact distributor. The plug-in contact distributor comprises at least two plug-in contacts. The contact plugs are releasably connected to the plug-in contacts. The heating apparatus renders possible simple exchange of a heating element and is therefore easy to service. The modular construction of the heating apparatus renders possible flexible use.

Abstract: In a method for reprocessing film waste material, the film waste material is comminuted into recycling material by means of a comminuting device. The recycling material is fed by means of a feeding device in a multi-shaft screw machine. In the multi-shaft screw machine, the recycling material is plasticized into a material melt and processed into raw material. The raw material may again be fed to a production installation for the production of films.

Abstract: A process and an arrangement for production of an electrode suspension are described. Formulation constituents of the electrode suspension are provided and mixed to give the electrode suspension. At least one optical measurement is conducted on the electrode suspension, in each case by detecting a spectrum of the electrode suspension over at least one subregion of the at least one of ultraviolet, visible and infrared frequency range. The at least one optical measurement is evaluated. The further treatment of the electrode suspension depends on the evaluation.