A tube forming apparatus for forming polymeric tubing includes a housing between rear and discharge ends. The tube forming apparatus includes a core tube assembly with an exterior core tube and an inner core tube positioned partially therein and in an interior area of the housing. The tube forming apparatus includes a die that has an inner die-surface. A diverter tip is mounted in and extends from the inner core tube into the die forming a die opening between the die and the diverter tip. The tube forming apparatus includes a core tube adjustment system mounted proximate the rear end which includes an axial displacement device configured to axially position the core tube assembly for modulating wall thickness of the tube and/or an angular displacement device configured to modulate the inner core tube for modulating concentricity of the tube.

Systems for manufacturing a composite extruded product formed of a substrate and a film. The system includes an extruder, a film application section for integrally bonding the film to the substrate, a heating section for increasing the temperature of the composite extruded product, an embosser for embossing a pattern into the composite extruded product, and a cooling section for cooling the composite extruded product. The cooling section applies pressure to the composite extruded product and sprays cooling fluid onto the composite extruded product such that the composite extruded product is cooled and the pattern embossed into the first surface is permanently set.

The present invention may manufacture a composite pipe by forming an adhesive layer and a resin layer on an outer surface of a metal pipe, and although the composite pipe is wound in a ring shape after the composite pipe is manufactured, a circular cross sectional shape may be maintained without deformation, and after the composite pipe is straightened for the purpose of construction, separation or buckling may be prevented, resulting in excellent transportability and constructability of a product.

The invention relates to a method and a device for producing a component by means of 3D multi-material pressure and to a component part produced therewith, wherein metallic and ceramic pastes, mixed with powder and binding agents, for producing the component are applied in layers by means of an extrusion process and are shaped, and the printing process is monitored by means of a monitoring device in such a way that defects in the pressure are detected by means of a camera and the defects are eliminated and/or overfilling or underfilling of each printed layer in relation to the extrusion quantity is monitored by means of a camera and/or temporary blockages in the extrusion nozzle are detected by monitoring the pressure in the region of the extrusion nozzle and released by increasing the pressure. The device comprises a corresponding monitoring device. The device can also have a mixing and feeding device with a vacuum mixing container which is connected to a vibration device. The device can comprise a ceramic construction platform having a porous structure. The component has a lattice structure with beads which are deposited at a distance from one another on a plane.

A method for determining sagging of melt of a tube extruded in an extrusion device includes structuring a measuring device to rotate about the tube. The measuring device is configured to measure a wall thickness of the tube over a circumference of the tube and determine a wall-thickness profile over the circumference of the tube from the measured wall thicknesses. The wall-thickness profile includes a frequency and an amplitude. The method further includes determining a sagging of the melt from at least one of (i) the frequency and (ii) the amplitude of the wall-thickness profile.

In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake.

The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, coupled to a respective thermoelement, is arranged on the first nozzle lip, the thermoelements being controllable by the regulation in such a way that the slot can be adjusted by the action of a mechanical force from the respective adjusting element on the first nozzle lip, as a result of the expansion or contraction of the thermoelements. At least two adjusting elements are adjusted simultaneously. The invention further relates to a control and/or regulation system.

The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. An adjustment of the adjusting elements is carried out automatically based on measurement signals of at least one sensor, wherein the sensor is designed and/or arranged at the nozzle assembly in such a way that conclusions can be drawn about the thickness profile of the melt. The right-hand and left-hand edge region of the melt is monitored by means of the sensor and is controlled or regulated in such a way that the respective edge region is set by adjusting the adjusting elements depending on the material, in particular viscosity and/or viscoelasticity, and/or quality criteria and/or a conveying speed. The invention further relates to a control and/or regulation system.

The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. At least one clamping blade is respectively arranged in a right-hand and left-hand edge region of the nozzle assembly, wherein the width of the nozzle discharge slot can be variably set. The method comprises the following steps, which are carried out automatically for adjusting the width of the nozzle discharge slot and for clamping the adjusting elements: unclamping the clamping blade within the nozzle discharge slot; displacing the clamping blade within the nozzle discharge slot; clamping the clamping blade within the nozzle discharge slot for fixing individual adjusting elements.
Furthermore, the invention relates to a control and/or regulation system.

Disclosed is an extruder and a method for extruding cord reinforced tire components, wherein the extruder includes an extruder head with a die and a cord guide, wherein the die is provided with a cross sectional profile that defines a first cross section of the extrusion material in the die, wherein the cross sectional profile has a profile height, wherein the cord guide is arranged for guiding the cords into the die at a cord entry height, wherein the extruder head is provided with first heating elements, wherein the extruder comprises a control unit that is operationally connected to the first heating elements for generating an adjustable height temperature gradient in the extrusion material across the profile height to control swelling of the extrusion material relative to the cord entry height from the first cross section to a second cross section after the extrusion material leaves the die.