The devices relate to the nuclear, metallurgical, mining, machine-building and food industries and may be used in producing semi-finished products and items made via the extrusion of powders of composite, polymer and other plastic masses. A device for producing semi-finished products or items made of composite, or polymer, or plasticized powder materials includes a screw press with a housing and a screw within the housing. The housing and the screw each have at least one deformational portion with protrusions and may each be formed integrally with the protrusions or may be formed compositionally, having special insertable rings which are provided with protrusions. In carrying out all three device variants, the housing and the screw are formed compositionally, and have provided, on the deformational portions of a ring, stators, which are secured to neighboring portions of the housing, and rotors, which are secured to neighboring portions of the screw.

Disclosed herein are new injection molding-coating devices for the continuous manufacturing of coated pharmaceutical tablets comprising one or more active pharmaceutical ingredients and one or more excipients. Also disclosed herein are methods for the continuous manufacture of coated pharmaceutical tablets using these new devices for the purpose application in the pharmaceutical and drug manufacturing industries.

An extruder screw includes a screw main body, conveyance portions, barrier portions, and paths. The raw materials, the conveyance of which is limited by the barrier portions, flow in from the entrance. The raw materials flowing in from the entrance flow through the paths in an opposite direction to a conveyance direction of the conveyance portions. The exit is opened in the outer circumferential surface of the screw main body at a position on an upstream side in the conveyance direction in the conveyance portions in which the entrance is opened.

Various measures increase the cooling effect on a planetary roller extruder section/module. Those measures include a choke being arranged at an outlet of the planetary roller extruder section or module, a distance between centerlines of adjacent planetary spindles being at least equal to an outer diameter of the planetary spindles, providing a pressurized melt supply, having a cooling section composed of several sections/modules, providing at least one section/module in which a flow, during melt supply is converse to the conveying direction of the extruder, and providing cooling tubes arranged within the central spindle.

Disclosed are additively manufactured extruder components including a surface layer configured to contact extrudable material. The surface layer has a first additively manufactured metal composition. A base support for the surface layer has a second additively manufactured metal composition that is different from the first additively manufactured metal composition. A functionally graded material (FGM) is formed from the first and second additively manufactured metal compositions connecting the surface layer to the base support.

Disclosed are additively manufactured extruder components comprising a lattice structure formed within a structural support frame that defines an impervious surface and an axial aperture. An axial aperture of a screw segment is configured to couple to a drive shaft, and its impervious surface is configured to contact extrudable material. An axial aperture of a barrel segment is configured to contact extrudable material.

An extrusion cylinder has a cylinder body for accommodating an extruder worm and is characterized in that an outer wall of the cylinder body has at least one depression which can be covered and which in the covered state is suitable for conducting a cooling or heating medium for controlling the temperature of the cylinder body.

A cylinder for a plastics-processing machine is provided, comprising at least two hollow-cylindrical bodies. At least one portion of at least one hollow-cylindrical body is provided with an inner coating, particularly a wear-protection layer, and can be attached to the other hollow-cylindrical body, the one hollow-cylindrical body being attachable to the other hollow-cylindrical body in a plurality of different positions. A device is further provided for processing a material and a method is also provided for operating an extruder.

A screw machine includes an inductive heating device for processing of material to be processed. The inductive heating device is used to heat the material in a heating zone. In the heating zone, at least one housing portion is made of an electromagnetically transparent material at least partly, the material being non-magnetic and electrically non-conductive, whereas at least one treatment element shaft is made of an electrically conductive material at least partly. The inductive heating device includes at least one coil formed integrally with a component of the at least one housing portion, in particular in such a way as to form a hybrid component. During the processing of the material, the inductive heating device generates an alternating magnetic field that produces eddy current losses in the at least one treatment element shaft, the eddy current losses leading to a temperature increase of the at least one treatment element shaft.

A barrel block for a twin-screw extruder constitutes a barrel including a cylinder and has joints at both ends. A first joint includes a first inner joint face on a peripheral edge of a first hole of an insertion hole for screws, and includes a first flank face and a first outer joint face on an outer periphery of the first inner joint face. The first outer joint face is located in the outer periphery of a plurality of first bolt holes. The first outer joint face is more recessed toward a second block end face than the first inner joint face.