Abstract: A suction device for drying at least one plastic strand, incorporates a suction housing having a top side, a bottom side and several lateral surfaces, the top side having an inlet opening and one of the other surfaces having an outlet opening for the flow of a drying medium therethrough, and a screening element which has through apertures a base area with a maximum length and a maximum width. Each through aperture has an aperture cross-sectional area, and the sum of the aperture cross-sectional areas of all through apertures together forms a total aperture cross-sectional area. The screening element is on the top side and has its drying area above the inlet opening of the suction housing. The at least one plastic strand is moved in a process direction on the screening element, wherein the process direction is in a longitudinal direction of the screening element.

Abstract: The invention relates to a method for making granules from strands of a melt of a thermoplastic polymer material having the steps of creating and providing the melt of the material, discharging the material in multiple strands from a perforated plate, impinging the strands with an impinging flow fluid from an impinging flow nozzle, cooling the strands and dividing the strands into individual granules, wherein the strands are impinged by the impinging flow fluid only during discharge from the perforated plate, and wherein, as it is discharged from the impinging flow nozzle, the impinging flow fluid has a temperature above the melting temperature of the material and has a discharge velocity in the range from 50 m/sec to 300 m/sec; the invention also relates to a device for carrying out the method with an impinging flow device that can be pivoted by means of a pivoting joint.

Abstract: A feed roll for a strand pelletizer and a method for producing the feed roll for a strand pelletizer. The feed roll comprises a metallic roll core and a sheathing located on the metallic roll core. The sheathing can comprise a plastic material and at least one metal mesh. The feed roll can be produced by: providing a metallic roll core, arranging a metallic mesh on the roll core, and molding over the metallic mesh with a plastic material to form the sheathing.

Abstract: The invention relates to a device for pelletizing at least one strand of material to be pelletized. Said device comprises a cutting device with two blades that can be displaced relative each other, at least one feed roller and at least one strand feeder for feeding the strand to the cutting device. An additional tab-shaped rectification guide is arranged downstream of the strand feeder in the region directly in front of the feed roller and next to the same, said guide being adjustable and movable in relation to the strand feeder. The rectification guide can be used to adjust the angle at which the strand is fed to the feed roller.

Abstract: The invention relates to a device for granulating plastic strands having a cutting wheel (15), the individual blades of which graze past a counter blade (2) disposed in a blade carrier (1) when the cutting wheel is rotated, thus cutting the plastic strands (13) being guided over the counter blade into a granulate (14), wherein a rail (3a, 3b) composed of hard material running parallel to the counter blade is disposed adjacent to the counter blade and after said counter blade in the rotational direction of the cutting wheel that collects cut granulate and conducts said granulate into a discharge channel.

Abstract: The invention relates to a method for making granules from strands of a melt of a thermoplastic polymer material having the steps of creating and providing the melt of the material, discharging the material in multiple strands from a perforated plate, impinging the strands with an impinging flow fluid from an impinging flow nozzle, cooling the strands and dividing the strands into individual granules, wherein the strands are impinged by the impinging flow fluid only during discharge from the perforated plate, and wherein, as it is discharged from the impinging flow nozzle, the impinging flow fluid has a temperature above the melting temperature of the material and has a discharge velocity in the range from 50 m/sec to 300 m/sec; the invention also relates to a device for carrying out the method with an impinging flow device that can be pivoted by means of a pivoting joint.

Abstract: The invention concerns an extrusion granulator for the granulation of plastic strands gripped by a pair of feed rollers and directed over a slideway in the direction of a cutting rotor with an opposing blade. A guided air stream directed onto the slideway, and deflected perpendicularly towards the cutting rotor by said slideway, impinges on the strands carried on the slideway with such a speed that the strands are held in a parallel orientation by the air stream.

Abstract: The invention relates to a device for producing pellets from plastic material or from material to be pelletized. Said device comprises a continuous casting device (1) from which at least one strand (2) of the material to be pelletized is issued, and a belt conveyor (3) comprising at least one conveying belt (4) on which the strand (2) can be fed to a pelletizer (5), said pelletizer breaking the strand up into pellets (6). The invention is characterized in that the belt conveyor (3) has a switchable direction of conveyance of the conveying belt (4), a direction of feed conveyance towards the pelletizer (5) and a direction of discharge conveyance away from the pelletizer (5). The invention also relates to a method for operating said device.

Abstract: A cutter bar of a cutting device for producing pellets from strands of material that emerges from a perforated plate in one or more strands of material and is cut into individual pellets by the cutting device, having at least one cutting edge. The cutter bar can have a serration on at least one strand contact surface, and the serration can have a preferential direction that is inclined at an angle relative to the cutting edge.

Abstract: The invention relates to a device for producing pellets from plastic material or from material to be pelletized. Said device comprises a continuous casting device (1) from which at least one strand (2) of the material to be pelletized is issued, and a belt conveyor (3) comprising at least one conveying belt (4) on which the strand (2) can be fed to a pelletizer (5), said pelletizer breaking the strand up into pellets (6). The invention is characterized in that the belt conveyor (3) has a switchable direction of conveyance of the conveying belt (4), a direction of feed conveyance towards the pelletizer (5) and a direction of discharge conveyance away from the pelletizer (5). The invention also relates to a method for operating said device.

Abstract: The invention relates to a device for pelletizing at least one strand (1, 1?) of material to be palletized. Said device comprises a cutting device with two blades (5, 6) that can be displaced relative to each other, at least one feed roller (3, 4) and at least one strand feeder (2, 2?) for feeding the strand (1, 1?) to the cutting device. An additional tap-shaped rectification guide (7, 7?) is arranged downstream of the strand feeder (2, 2?) in the region immediately in front of the feed roller (3, 4) and next to the same, said guide being adjustable in its inclination and moveably in relation to the strand feeder. The rectification guide can be used to adjust the angle at which the strand is fed to the feed roller.

Abstract: The invention relates to a device for granulating plastic strands having a cutting wheel (15), the individual blades of which graze past a counter blade (2) disposed in a blade carrier (1) when the cutting wheel is rotated, thus cutting the plastic strands (13) being guided over the counter blade into a granulate (14), wherein a rail (3a, 3b) composed of hard material running parallel to the counter blade is disposed adjacent to the counter blade and after said counter blade in the rotational direction of the cutting wheel that collects cut granulate and conducts said granulate into a discharge channel.

Abstract: The invention concerns an extrusion granulator for the granulation of plastic strands gripped by a pair of feed rollers and directed over a slideway in the direction of a cutting rotor with an opposing blade. A guided air stream directed onto the slideway, and deflected perpendicularly towards the cutting rotor by said slideway, impinges on the strands carried on the slideway with such a speed that the strands are held in a parallel orientation by the air stream.

Abstract: One or more methods for the manufacture of a die plate of an extruder of a pelletizer for thermoplastic material, with die orifice openings are provided. One or more of the methods can include providing a die plate blank having a die plate base material; producing a functional layer with a reinforcing material in at least one region on at least one side of the die plate blank, and applying the reinforcing material to the die plate base material in the region of the functional layer by laser dispersion.

Abstract: An apparatus for pelletizing strands of polymer emerging in molten form from dies with a pelletizer, in which apparatus a cooling section carrying a coolant flow and a dewatering section are provided between the dies and the pelletizer, a running-in rest being arranged upstream of the pelletizer, adjoining the dewatering section and provided with at least one air-nozzle arrangement, which is arranged transversely to the running direction of the strands, is designed as a step in the running-in rest and is intended for generating a stream of air directed essentially parallel to the running direction of the strands, which takes with it the strands supplied to the running-in rest.