Abstract: A method for determining an actual volume Vr of an injection-moldable compound during an injection-molding process is disclosed. The injection-moldable compound is introduced into at least one cavity of the mould. The method includes the steps of: a) determining a theoretical volume Vt from process variables at least during a filling phase of the injection-molding process, b) determining and/or measuring at least one value for at least one compound pressure pM, c) selecting a material-specific compression k (p), corresponding to the value of pM, of the injection-moldable compound, and d) calculating an actual volume Vr by taking into account the compression k (p).

Abstract: A melting device includes a container capable of melting a material supplied in a free-flowing state and storing the material in a liquid state. The container includes a first storage section for storing the material in the free-flowing state, a second storage section for storing the material in the liquid state, and a dividing section provided between the first storage section and the second storage section and configured to hold back the material, when the material is in a non-molten or free-flowing state and to allow passage of the material from the first storage section into the second storage section, when the material is in a molten or liquid state.

Abstract: A cleaning piston for a mixing head of a reaction moulding machine includes a main part which has a cylindrical casing region, and a clearing part. The material and geometry of the clearing part are designed to remove residual material adhering to a channel of the mixing head. The clearing part is at least partly made of non-polar material.

Abstract: A plastic injection-moulding machine includes an injection unit for processing a plastic mass, and a closing unit having an injection-moulding tool with a cavity, into which plastic mass is injected by the injection unit to produce a moulded part. A machine controller controls the injection unit and the closing unit according to a machine program running on the machine controller. A user interface device communicates with the machine controller and has a screen for displaying text information and/or image information. The machine controller includes a data memory for storing the text information and/or image information in the form of data sets, and a process generator for manually assigning each state parameter of the plastic injection-moulding machine a data set. The process generator automatically writes the data set into the data memory or automatically reads out the data set for display on the screen in accordance with the associated state parameter.

Abstract: A plastic injection-moulding machine includes an injection unit for processing a plastic mass to be moulded, and a closing unit having an injection-moulding tool having at least one cavity, into which the plastic mass processed by the injection unit is injected to produce a moulded part. A machine controller controls the injection unit and the closing unit, and a user interface device, which has at least one input means and at least one output means. The at least one output means is designed as a screen. At least one camera is provided to record a region of the plastic injection-moulding machine lying behind the user interface device, with the machine controller being designed to display the region recorded by the camera on the screen.

Abstract: A clamping unit of an injection molding machine having platens and columns includes a clamping-type locking apparatus by which a column is securable in relation to one of the platens at any position along a travel path of the platens relative to one another. The clamping-type locking apparatus includes a clamping jacket and a clamping device for clamping-type locking of the column in relation to the clamping jacket. The clamping device is displaceable together with the column along the travel path within the clamping jacket, when the clamping device assumes a released state, and the clamping device is configured to effect a clamping action by generating between the clamping jacket and the clamping device a locking force which is directed radially outwards in relation to a longitudinal axis of the column.

Abstract: A melting device includes a container capable of melting a material supplied in a free-flowing state and storing the material in a liquid state. The container includes a first storage section for storing the material in the free-flowing state, a second storage section for storing the material in the liquid state, and a dividing section provided between the first storage section and the second storage section and configured to hold back the material, when the material is in a non-molten or free-flowing state and to allow passage of the material from the first storage section into the second storage section, when the material is in a molten or liquid state.

Abstract: In a method for operating an injection moulding machine in the absence of a backflow barrier, plastic melt is injected by a plasticising device into a cavity in a screw antechamber of a plasticising screw adapted to rotate about a longitudinal axis and to move translationally by a drive unit during an injection phase and a holding- pressure phase. A rotational drive of the drive unit is controlled such that a speed of the plasticising screw causes overlay of a backflow of the plastic melt from the screw antechamber back into screw threads of the plasticising screw by an opposing delivery flow as a result of a rotation of the plasticising screw due to a translational injection movement of the plasticising screw. A differential flow is established from the backflow and the opposing delivery flow and influenced at least during the injection phase by influencing the speed of the plasticising screw.

Abstract: A device and method for applying a reactive mixture comprised of at least two components to a substrate (41) having a spraying device (10) capable of generating a planar, fan-shaped spray jet (18) and a round spray jet (17), and having a means for moving the spraying device relative to the substrate, wherein the spraying device is moved over the substrate in at least two stages, wherein in the first stage, a first application of material (42) is performed with reactive mixture, using the planar, fan-shaped spray jet, on the substrate, and in a further stage a second application of material (43a-c) is subsequently performed with reactive mixture, using the round spray jet, on at least a section of the material applied to the substrate in the first application of material.

Abstract: The present invention relates to a process for producing coated mouldings with fully or partly structured surfaces. The present invention additionally describes a system for performing this process.

Abstract: In a method for producing a shaped part, a closing movement is executed by displacing at least one of two mold halves of a high-pressure resin transfer tool from an open position into a pre-closure position of the resin transfer tool such that an opening gap between the mold halves is sealed air-tight by a sealing device of the resin transfer tool to thereby enclose a cavity. The cavity is evacuated by pumping air out of the cavity, and the closing movement is continued by displacing at least one of the two mold halves from the pre-closure position into a final closure position, in which the mold halves are sealed against one another by a further sealing device to allow filling of the cavity, enclosed by the two mold halves, with resin without leakage during a high-pressure resin transfer molding process.

Abstract: A plastic carrier for sealing a mold cavity during the production of a multicomponent plastic part, wherein at least one component flows over a plastic element and the carrier, with the carrier becoming an integral part of the multicomponent plastic part. The carrier has a central region sealing the mold cavity when the plastic element is inserted into the mold cavity, a first main face facing the mold cavity and a second main face facing away from the first main face. The carrier has a peripheral edge extending beyond the central region and the outer circumference of the mold cavity, allowing the at least one component to flow over the first main face of the peripheral edge. The carrier also has a first edge region forming a fold-over projection and a second edge region arranged between the central region and the first edge region for forming a film hinge.

Abstract: A component feed nozzle includes a housing, which has a component inlet and a component outlet, a piston-shaped closing body, which is slidably supported in the housing and which can be moved back and forth axially. The component outlet is closed by the front end of the closing body in a first position and the component outlet is released or opened in a second position. The component feed nozzle has a membrane seal, which is fastened to the rear end of the closing body and to the housing in such a way that the closing body is completely on one face of the membrane seal. The housing and/or the closing body are designed in such a way that the component reaches all surfaces of the closing body and thus the component pressure is applied to the complete effective surface of the membrane.

Abstract: A seal for use in an extrusion device for producing continuous profiles, in particular plastics pipes includes an elastic sealing disc, which is arranged in a plane approximately perpendicularly to the extrusion direction and has a through-passage opening letting through the continuous profile and having a sealing rim bearing against the continuous profile. Connection members are arranged along the sealing rim, and clamping elements are provided for exerting a force on the connection members, with the force acting radially with respect to the extrusion axis. The clamping elements are arranged in a plane parallel to the sealing disc, have a passage opening for the continuous profile and include connecting members for connecting the connection members to the clamping elements.

Abstract: The present invention relates to a method and to an apparatus for producing plastic products with an integrated reinforcing structure. To do so, a flexible fabric is first placed onto a surface of a cavity of a mold and is successively coated with plastic on the various sides.

Abstract: A mold clamping device for an injection-molding machine includes a fixed platen, a movable platen, pressure pads for generating a clamping force, and a spindle drive for moving the movable platen. The spindle drive has a non-rotating spindle shaft and a spindle nut which can be rotationally driven by a motor. The spindle shaft has a threaded portion in engagement with a matching thread of the spindle nut. To permit a free relative movement between the spindle drive and the movable platen, a piston-cylinder unit is in operative connection with the spindle drive and has on both sides of the piston pressure medium spaces, which can optionally be hydraulically blocked or connected to one another. In the latter state, the spindle drive is decoupled from the movable platen and freely floating with respect to it.

Abstract: A guide shoe of a guiding device of a plastic processing machine clamping unit has an elongated main part in clamping direction for attachment of sliding and/or rolling elements. The guide shoe has a connecting element which is spaced from the main part and extends substantially vertically in the clamping direction, and which has a fixing region for fixing the guide shoe to a moving mold platen. The moving mold platen can be fixed solely to the fixing region of the connecting element in decoupled manner from the main part. The connecting element is designed as a deformation element fixed to the main part via a connecting region that forms a target bending zone with respect to a bend about a bending axis substantially parallel to the clamping direction, such that the deformation element additionally forms a target torsion zone about a torsion axis substantially perpendicular to the clamping direction.

Abstract: In a method for coating a molded part (1), in particular a molded part produced by injection molding, the molded part (1) is arranged in a cavity (2) of a molding tool (3), wherein a partial cavity (4) between the molded part (1) and a first molding-tool half (5) of the molding tool (3) remains when a closing force (F) is applied to the molding tool (3) at a first closing-force level. A coating mass (6) is introduced into the partial cavity (4) and the coating mass (6) is cured/cross-linked. The closing force (F) of the molding tool (3) is increased during the curing/cross-linking of the coating mass (6), wherein the increase in the closing force (F) causes a volume reduction of the partial cavity (4) due to elastic deformation of the molding tool (3) and/or elastic deformation of the molded part (1).

Abstract: A device for generating a hollow plastic profile, in particular a plastic tube, having an air guidance system for interior cooling of the tube, wherein said device allows for a more simple design, improved process properties, and better tube quality. The device according to the invention comprises an extrusion die (100) having a melt channel (114) encompassing the extrusion axis, an extruder that feeds plastic melt to the extrusion die (100), and a suction device for suctioning air through the interior of the profile opposite the direction of extrusion, wherein the extruder feeds the extrusion die (100) centrally and the suction device comprises a central suction tube (140) disposed within the melt channel and partial flow suction channels (144) connected to the central suction tube (140); in the suctioning direction and leading out of the interior of the extrusion die (100).

Abstract: The invention relates to a guide shoe (1) of a guiding device of a plastic processing machine clamping unit for supporting and guiding a moving mold platen (30) in the clamping direction of the plastic processing machine.