A method and device for mixing plastic from liquid components in a mixer (8) and conveying it through a line (10) into a mould (12), in particular for vacuum infusion, characterised in that the components are each pumped by means of a pump (24) from their own respective component container (22) into a mixer (8) and are mixed therein, that these volume flows are controlled by a controller (26) in such a manner that they supply the components to the mixer (8) in a specific ratio, that the pressure loss in the line (10), between a pressure sensor in one of the component supply lines (32) leading to the mixer (8) and the mould (12), is determined, and that the pressure is measured by the pressure sensor and supplied to a controller (26) which, taking into consideration the determined pressure loss, controls the volume flows such that the pumps (24) supply the components to the mixer (8) at a pressure that is greater than the ambient pressure or than another specific pressure that should not be exceeded in the mould (12) by at most the pressure loss.

A device for producing a multicomponent mixture having a mixing chamber which is surrounded by a chamber wall, the device further includes an outlet for a multicomponent mixture and into which at least two component valves and at least one flushing valve open, the flushing valve being in connection on the inlet side with a temperature control channel system which is associated with the chamber wall and through which water can flow.

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 for 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 serves for feeding an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation serves for feeding at least one color granulate through a second infeed opening into the housing. The plastic material is fed exclusively by way of the first infeed opening such that residual color granulate or dyeing agent contained therein, respectively, 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.

A mixing method provided by the invention comprises steps of melting a solid-state polymer raw material into a flowable molten raw material fluid to flow into a mixing space at a first volume flow rate, when the raw material fluid entering the mixing space, introducing a foaming agent in a fluid form into the mixing space simultaneously or at a different time, mixing the foaming agent with the molten raw material fluid into a mixture in the mixing space, circulating the mixture in the mixing space at a second volume flow rate, and causing the second volume flow rate greater than the first volume flow rate.

A liquid polymer or chemical activation system, having a chamber; a top cover plate, a middle cover plate and a bottom cover plate; wherein such configuration creates a hollow space inside the chamber that is flanked by the top cover plate and the bottom cover plate; a hybrid pump blending reactor having a progressive cavity pump and one or more inlets for receiving first and second substances; an upper multistage mixing cup configured to receive the first and second substances from the hybrid pump blending reactor; at least one high shear mixer for mixing the first and second substances; at least one submersible actuator for actuating the high shear mixer; an intermediate blending section for receiving the mix of first and second substances from the upper multistage mixing cup; a lower multistage aging cup for further mixing of the first and second substances; and at least one outlet on the bottom cover plate for releasing the mix of first and second substances.

The invention relates to a mixer insert having a support rod element and at least one vortexing element and a rotary drive connection structure, wherein the mixer insert, for insertion into a tubular passage element, and together therewith, is adapted to a device for mixing at least two fluid components to be placeable by means of the rotary-drive connection structure in drive connection with a driveshaft of the device, when the mixer insert is inserted into the passage element and the passage element is placed in fluid-tight flow connection with at least two component feed lines of the device, characterized in that the rotary-drive connection structure has a bore hole having a bore hole wall which are adapted to a thread on the driveshaft in such a manner that the bore hole, for producing the drive connection, can be screwed onto the thread, wherein the bore hole wall is shaped by the thread. The invention also relates to such a device for mixing and also to a system of such a device and such a mixer insert.

Disclosed are systems and methods for mixing a plurality of materials for fused deposition modeling printing. The systems and methods can both mix and extrude FDM printer filaments. The mixing can be accomplished via a mixing element rotating in a heated chamber of the extruder's hot-end in order to achieve the shear forces to induce mixing of the molten plastics. Further, the mixing element can provide a secondary driving mechanism to assist with extruding the extrudate.

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 for 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 serves for feeding an undyed plastic material through a first infeed opening into a housing of the multi-shaft screw extruder, and the second metering installation serves for feeding at least one color granulate through a second infeed opening into the housing. The plastic material is fed exclusively by way of the first infeed opening such that residual color granulate or dyeing agent contained therein, respectively, 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.

A material deposition system for additive manufacturing including an extruder and a measuring device for measuring the viscosity and/or other rheological properties of a build material contained within the extruder. The measuring device may provide feedback to a controller for controlling one or more parameters depending on the measured viscosity and/or other rheological properties of the build material within the extruder. Two or more feed materials may be supplied to the extruder and a mixing device may be configured to mix the feed materials within the extruder to create a blended deposition material. The mixing device may be operatively coupled to the measuring device for simultaneously measuring the viscosity and/or other rheological properties of the materials during mixing. The controller may be configured to independently control one or more parameters associated with the materials depending on the viscosity and/or other rheological properties measured by the measuring device.

The invention relates to a mixer insert having a support rod element and at least one vortexing element and a rotary drive connection structure, wherein the mixer insert, for insertion into a tubular passage element, and together therewith, is adapted to a device for mixing at least two fluid components to be placeable by means of the rotary-drive connection structure in drive connection with a driveshaft of the device, when the mixer insert is inserted into the passage element and the passage element is placed in fluid-tight flow connection with at least two component feed lines of the device, characterized in that the rotary-drive connection structure has a bore hole having a bore hole wall which are adapted to a thread on the driveshaft in such a manner that the bore hole, for producing the drive connection, can be screwed onto the thread, wherein the bore hole wall is shaped by the thread. The invention also relates to such a device for mixing and also to a system of such a device and such a mixer insert.