Abstract: A device and a method for extruding plastics, comprising an extruder screw, a housing with a cavity, a drive unit for rotatably driving the extruder screw, a heating element arranged on the housing alongside the extruder screw, a filling unit through which shredded plastic can be supplied into the cavity, and a filler metering device. Upon rotation, the extruder screw conveys the shredded plastic in the transport direction along a longitudinal axis of the extruder screw. The housing has a feeding port for the filler opening into the cavity, wherein the filler metering device is connected to the feeding port and is designed for supplying a filler dispersed in a gas stream into the cavity.

Abstract: A device (1) for filtering plastic melt having an inlet valve (14), an outlet valve (15) and a filter canister (2), wherein a cavity (3) closable by means of a cover (4) is formed and into which a melt channel (20) opens. In the filter canister (2) there is arranged a plurality of filter cartridges (5), which are each formed by a filter substrate (6) and a filter lattice (7). The filter substrate (6) comprises a wall having openings, said wall defining an internal space (8), which opens through an outlet (9) into a collection channel (10). The filter lattice (7) covers the openings of the filter substrate (6). The melt channel (20) is adjacent to the inlet valve (14) and may be brought into fluid communication with an outlet channel (16) via the inlet valve (14). The collection channel (10) is adjacent to the outlet valve (15) and may be brought into fluid communication with an outlet channel (18) via the outlet valve (15). The cover (4) fixes the filter lattices (7) onto the filter substrates (6).

Abstract: The invention relates to a device (1) for extruding thermoplastic material, having an extruder housing (22) in which an extruder screw (22) driven by a drive device (23) is supported rotatably about the axis thereof, said housing comprising an intake opening (24) to which a plastic material feeder (3) is connected, said feeder comprising at least one air inlet opening (36), wherein the extruder housing (22) comprises at least one vapor outlet opening (41) upstream of the intake opening (24) and an air/vapor path (28) is defined from the intake opening (24) to the vapor outlet opening (41).

Abstract: The invention relates to a device (1) for reducing thermal plastic goods (2), comprising a container (3) for receiving the in particular loosely packed plastic goods (2) and a reducing device (4) projecting into the container or arranged therein for reducing the plastic goods and the conveyance thereof to a discharge opening (5), characterized by air inlets (6) in the region of the reducing device and air outlets (7) in the container wall (8).

Abstract: The invention relates to a device (1) for extruding thermoplastic material, having an extruder housing (22) in which an extruder screw (22) driven by a drive device (23) is supported rotatably about the axis thereof, said housing comprising an intake opening (24) to which a plastic material feeder (3) is connected, said feeder comprising at least one air inlet opening (36), wherein the extruder housing (22) comprises at least one vapor outlet opening (41) upstream of the intake opening (24) and an air/vapor path (28) is defined from the intake opening (24) to the vapor outlet opening (41).

Abstract: The invention relates to a process and a device for increasing the intrinsic viscosity of a polyester material by solid-state polymerization, wherein the polyester material is heat-treated in a heat treatment container (6), the polyester material being introduced into a preheating container (2) prior to being conveyed into the heat treatment container (6), in which preheating container it is heated to a heat treatment temperature of the heat treatment container (6) or to a temperature above that and is delivered to the heat treatment container (6) after having reached said temperature. The preheating container (2) is small in comparison with the heat treatment container (6) so that the relatively small amount of polyester material contained therein can quickly be heated to the intended temperature, thereby leading to a short residence time in the preheating container.

Abstract: The invention relates to a process and a device for increasing the intrinsic viscosity of a polyester material by solid-state polymerization, wherein the polyester material is heat-treated in a heat treatment container (6), the polyester material being introduced into a preheating container (2) prior to being conveyed into the heat treatment container (6), in which preheating container it is heated to a heat treatment temperature of the heat treatment container (6) or to a temperature above that and is delivered to the heat treatment container (6) after having reached said temperature. The preheating container (2) is small in comparison with the heat treatment container (6) so that the relatively small amount of polyester material contained therein can quickly be heated to the intended temperature, thereby leading to a short residence time in the preheating container.