Abstract: A squeezing roller granulator that has a squeezing roller pair composed of a toothed pressure roller and a toothed squeezing roller. The teeth of the pressure roller and the squeezing roller have tooth flanks that are situated between a tooth root region and a tooth tip region. The tooth root region has an outer diameter that is smaller than the outer diameter of the tooth tip region, and the tooth tip region of at least one of the rollers of the squeezing roller pair has three squeezing zones including a middle squeezing zone, which define different distances between the tooth tip regions with a minimum distance in the region of the middle squeezing zone, and the contour of the tooth flanks and the tooth root region of the rollers of the squeezing roller pair defines a maximum cross-section of granulate cushions to be formed.

Abstract: An extrusion head having a perforated plate of a granulating system. The extrusion head can have a head part and a perforated plate with a perforated-plate wear insert, a perforated-plate main body, a central inflow cone, an inflow cone part, a plurality of nozzle channels, a plurality of perforated dies, and at least one corrosion protected fastener. The perforated-plate can be detachably fastened to the head part. The head part can have at least one central melt channel into which the inflow cone part projects and distributes a melt flow among nozzle channels which can be arranged in the shape of a ring and among the perforated dies which can be arranged in at least one ring. The at least one fastener can be positioned in a central region of the at least one ring of the perforated dies.

Abstract: A dropletization apparatus for producing granules from a melt, such as a melt for producing pharmacological granules, or a low-viscosity plastic melt of polyamides or copolyamides. The apparatus can have a caster nozzle which imparts an oscillation to the melt. Upon forming granule/droplets, the melt material can traverse an adjustable fall zone to become granules. The granule/droplets and/or granules can impact a catching device comprising a truncated cone and enter a cooling fluid. Granules can then be separated from the cooling fluid and removed for further processing.

Abstract: A squeezing roller granulator that has a squeezing roller pair composed of a toothed pressure roller and a toothed squeezing roller. The teeth of the pressure roller and the squeezing roller have tooth flanks that are situated between a tooth root region and a tooth tip region. The tooth root region has an outer diameter that is smaller than the outer diameter of the tooth tip region, and the tooth tip region of at least one of the rollers of the squeezing roller pair has three squeezing zones including a middle squeezing zone, which define different distances between the tooth tip regions with a minimum distance in the region of the middle squeezing zone, and the contour of the tooth flanks and the tooth root region of the rollers of the squeezing roller pair defines a maximum cross-section of granulate cushions to be formed.

Abstract: An extrusion head having a perforated plate of a granulating system. The extrusion head can have a head part and a perforated plate with a perforated-plate wear insert, a perforated-plate main body, a central inflow cone, an inflow cone part, a plurality of nozzle channels, a plurality of perforated dies, and at least one corrosion protected fastener. The perforated-plate can be detachably fastened to the head part. The head part can have at least one central melt channel into which the inflow cone part projects and distributes a melt flow among nozzle channels which can be arranged in the shape of a ring and among the perforated dies which can be arranged in at least one ring. The at least one fastener can be positioned in a central region of the at least one ring of the perforated dies.

Abstract: A squeeze roller granulator that has a cylindrical pressure roller and a toothed squeeze roller. The gearing of the squeeze roller has tooth flanks that are situated between a tooth root region and a tooth tip region. The tooth root region has an outer diameter that is smaller than the outer diameter of the tooth tip region. The tooth tip region of the squeeze roller has three crushing zones including a middle crushing zone, which define different distances from the cylindrical pressure roller with a minimum distance in the region of the middle crushing zone, and the contour of the tooth flanks and the tooth root region of the crush roller in cooperation with the contour of the cylindrical pressure roller defines a maximum cross-section of granulate cushions to be formed.

Abstract: A perforated plate for producing granulate or microgranulate from a thermoplastic plastic material and a method of manufacturing a perforated plate for producing granulate or microgranulate from a thermoplastic plastic material, wherein the perforated plate comprises a plurality of nozzle bores. The lengths of the nozzle bores are respectively sized such that each nozzle bore of the plurality of nozzle bores allows a substantially uniform flow rate of a melt material.

Abstract: A device and a method for reducing the pressure of a fluid containing granules. The device comprises a free space devoid of moving rotor blades and a housing with an inlet and an outlet. The shape of the wall within the housing and of the free space therein applies a centripetal flow component to the fluid containing the granules flowing therethrough. The pressure of the fluid containing the granules is decreased after the flow has passed through the device. The device and method further and impart a rotational motion to the fluid containing the granules in the area of the outlet, which is generally located in the central area of the free space.

Abstract: The invention relates to a cutting apparatus for a granulator for cutting plastics-material strands emerging from nozzles into granules. The cutting apparatus includes a knife rotor which is connected to a drive shaft via an articulation component having a drive part and via a driven part carrying the knife rotor. The drive part is inserted into a spherical head in a matching spherical cap in the drive part. The spherical head passes through by at least one direction axle, about which the spherical head is rotatable in the spherical cap in case of an axial offset of the drive part and the driven part. In this case, an end of the directional axle that emerges from the spherical head is mounted in a groove in the spherical cap and extends transversely to the direction of rotation of the spherical cap such that, in the case of an offset of the drive part with respect to the driven part, the end moves in the groove.

Abstract: Knife arrangement for a granulator for granulating plastic ropes with two draw-in rollers and a cutting rotor (9) cooperating with a counter-knife (2), and a striper (3) facing one of the draw-in rollers (11), whereby counter-knife (2) and striper (3) are mounted on a common support, whereby the striper (3) is arranged adjustably for adjustment of the distance between the striper (3) and the draw-in roller (11), and whereby the striper (3) has a support surface (6) for feeding the plastic ropes (12) to the counter-knife (2) and the cutting rotor (9), and is provided on one side with a striper edge (18) projecting towards the draw-in roller (11), and on its other side with an end edge (7) projecting towards the counter-knife (2), whereby the support (1) has a support surface (4) facing the striper (3), on which the striper (3) rests with a counter surface (5) adapted to the support surface (4), whereby support surface (6) and counter surface (5) approach each other towards the counter-knife (2) in a wedge-shap

Abstract: Knife arrangement for a granulator for granulating plastic ropes with two draw-in rollers and a cutting rotor (9) cooperating with a counter-knife (2), and a striper (3) facing one of the draw-in rollers (11), whereby counter-knife (2) and striper (3) are mounted on a common support, whereby the striper (3) is arranged adjustably for adjustment of the distance between the striper (3) and the draw-in roller (11), and whereby the striper (3) has a support surface (6) for feeding the plastic ropes (12) to the counter-knife (2) and the cutting rotor (9), and is provided on one side with a striper edge (18) projecting towards the draw-in roller (11), and on its other side with an end edge (7) projecting towards the counter-knife (2), whereby the support (1) has a support surface (4) facing the striper (3), on which the striper (3) rests with a counter surface (5) adapted to the support surface (4), whereby support surface (6) and counter surface (5) approach each other towards the counter-knife (2) in a wedge-shap

Abstract: Apparatus for granulating strand materials including a stationary knife, a rotatable knife, and a drawing-in device. Part of the housing is pivotable to enable the drawing-in device to be easily removed for maintenance. An oblong hole on the housing is used to locate the drawing-in device.

Abstract: A strand caster, in particular for plastic strand casting systems, is provided, which in a known fashion consists of a nozzle plate and a caster. The nozzle plate and the caster include abutment surfaces facing each other, and the nozzle plate is mountable to the caster by corresponding mounting elements. The surface structure of at least one abutment surface of the nozzle plate or respectively the caster is adapted such that, due to the fastened state caused during operation, the one abutment surface accommodates to the opposing other abutment surface under tension so that an uniform surface pressing between the nozzle plate and the caster is achievable.

Abstract: The invention relates to a granulation apparatus for strand material having pull-in apparatus for gripping the strand material and transporting it to a counter knife, a knife roll cooperating with the counter knife for cutting the strand material into granulate, and a housing accomodating the pull-in apparatus, the counter knife and the knife roll, wherein a motor driving the knife roll and the pull-in apparatus is arranged beside the housing and is connected by means of a drive axle to the rotating components contained in the housing, and wherein the motor and the housing are mounted on a common support.

Abstract: The invention concerns a closable extrusion nozzle for thermoplastic materials, with a nozzle plate (4) containing nozzles permitting the extrusion of the thermoplastic material from a hopper (1) and with a perforated plate (7), disposed upstream of the nozzle plate, whose apertures (8) can be brought in and out of alignment with the nozzles by displacing the perforated plate (7) with respect to the nozzle plate (4). The nozzle plate (4), which is U-shaped in cross-section, with the arms of the U at right angles to the direction of displacement of the perforated plate, is designed as a housing for the perforated plate (7) enclosed within it.