WO2000059707A1 - Extrusion device - Google Patents

Extrusion device Download PDF

Info

Publication number
WO2000059707A1
WO2000059707A1 PCT/EP2000/002765 EP0002765W WO0059707A1 WO 2000059707 A1 WO2000059707 A1 WO 2000059707A1 EP 0002765 W EP0002765 W EP 0002765W WO 0059707 A1 WO0059707 A1 WO 0059707A1
Authority
WO
WIPO (PCT)
Prior art keywords
adapter
cylinder
melt
outlet
extruder
Prior art date
Application number
PCT/EP2000/002765
Other languages
German (de)
French (fr)
Inventor
Matthias Wittwer
Hilmar Born
Original Assignee
Barmag Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barmag Ag filed Critical Barmag Ag
Priority to DE10080804T priority Critical patent/DE10080804D2/en
Publication of WO2000059707A1 publication Critical patent/WO2000059707A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Definitions

  • the invention relates to a device for extruding thermoplastic materials according to the preamble of claim 1.
  • Extruders such as are known, for example, from DE 195 08 739 (Bag. 2213) are used to extrude thermoplastics.
  • the cylinder of the extruder is heated by one or more electric heating jackets, the circumference of which is arranged in the cylinder.
  • Such heating devices have proven particularly useful due to their good temperature control.
  • the thermoplastic is, for example, fed to the extruder as granules.
  • the granulate is melted by an extruder screw arranged in the cylinder and guided to the exit of the extruder as a thermoplastic melt.
  • the extruder has an adapter at the outlet.
  • a melt channel is formed in the adapter, which connects the cylinder outlet to a melt outlet in the adapter which is oriented transversely to the cylinder axis.
  • the adapter is made up of a carrier and a guide part.
  • the carrier is heated with the heat transfer circuit of the pipe system.
  • the guide part which is essentially enveloped by the carrier, serves to receive the melt channels and is therefore made of a low-wear material.
  • the adapter thus takes over the deflection of the melt flow at the outlet of the extruder, so that the extruder screw can be carried out axially towards the open end of the cylinder during repair work.
  • the heat transfer circuit of the connected pipe system is limited by the adapter.
  • Such a device, consisting of the extruder and the adapter requires considerable conversion measures to connect a structural unit, for example a filter device or a pump. In particular, the establishment of a closed heat transfer circuit for heating the adapter presents particular difficulties.
  • thermoplastic materials with an extruder and an adapter such that a variable connection option to the melt outlet of the adapter is ensured regardless of the temperature of the adapter.
  • the adapter is formed in one piece and that the dimensions of the adapter are adapted to the diameter of the cylinder such that the heating of the adapter can be carried out by the electric heating jacket of the cylinder.
  • the invention is characterized in that no additional heating device is required for the temperature control of the adapter.
  • the one-piece design of the adapter also enables a high level of integration between the extruder and the adapter.
  • the adapter is particularly adapted to the inside diameter of the cylinder.
  • the adapter has a flange which projects into the open end of the cylinder.
  • a cantilevered flange is formed on one end of the shaft for attachment to the cylinder.
  • a funnel-shaped melt inlet is formed on the opposite end of the shaft, which receives the plastic melt emerging from the cylinder and leads to a melt outlet.
  • the temper The adapter takes place directly through the electrical heating jacket attached to the circumference of the cylinder.
  • the melt outlet is formed on the circumference of the shaft in a particularly preferred embodiment of the invention. Opposite the melt outlet, an outlet opening for connecting a melt line is made in the wall of the cylinder.
  • the shaft lies essentially sealing against the wall of the cylinder.
  • the adapter is cylindrical, the outer diameter being substantially equal to the outer diameter of the cylinder.
  • the temperature of the adapter is brought about by a heating jacket lying against the circumference of the adapter.
  • the melt outlet can be formed in the adapter transversely to the axis of the cylinder, so that a melt flow is deflected when it emerges.
  • the adapter has at least one measuring connection for monitoring the melt flow or for regulating the extruder.
  • a temperature sensor or a pressure sensor can be introduced into the measuring connection.
  • the melt outlet in the adapter can be linked to any assembly downstream of the extruder.
  • a filter device can thus be connected directly to the adapter.
  • the embodiment of the invention according to claims 9 and 10 is particularly advantageous.
  • Figure 1 Schematic of a first embodiment of the device according to the invention.
  • Figure 2 Another embodiment of the device according to the invention.
  • the device has an extruder 1.
  • the extruder 1 consists of a cylinder 2.
  • At one end of the cylinder 2 there is an attachment drive 5 arranged, which drives an extruder screw 6 inside the cylinder 2.
  • a filling device 7 is attached in the jacket of the cylinder 2.
  • a thermoplastic in solid form for example in the form of granules, can be added to the extruder.
  • An electric heating jacket 4 is attached to the circumference of the cylinder 1.
  • the heating jacket 4 has two heating zones 9.1 and 9.2. Each of the heating zones 9.1 and 9.2 is connected to a heating control 8 and can be regulated independently of one another.
  • the second heating zone 9.2 of the heating jacket 4 encloses the end region of the cylinder 2.
  • the adapter 3 here consists of a cylindrical shaft 10 and a projecting flange 11 formed on the shaft 10.
  • the shaft 10 projects essentially sealingly into the interior of the cylinder until just before the extruder screw 6.
  • a funnel-shaped melt inlet 12 is introduced into the shaft 10.
  • the funnel-shaped melt inlet 12 is dimensioned such that the conical tip of the extruder screw 6 protrudes into the melt inlet 12 of the adapter 3.
  • the melt inlet 12 opens into a melt outlet 13.
  • the melt outlet is introduced radially into the shaft 10 of the adapter 3.
  • an outlet opening 15 is formed transversely to the axis of the cylinder 2 in the cylinder wall 16.
  • the outlet opening 15 in the wall 16 of the cylinder 2 is penetrated by a pipe section 17 which lies concentrically with the melt outlet 13 on the shaft 10 of the adapter 3.
  • the pipe section 17 penetrates the heating jacket 4 and ends outside the extruder 1.
  • a pipe flange 18 is fastened to the free end of the pipe section 17.
  • the adapter 3 also has a measuring connection 14 which is introduced in the end face of the flange 11 axially to the cylinder 2 in the adapter 3.
  • the measuring connection 14 opens into the melt outlet 13.
  • the adapter 3 is fastened via the flange 11 at the end of the cylinder.
  • the extruder 1 is given a thermoplastic in solid form.
  • the plastic is melted by the rotation of the extruder screw 6.
  • the cylinder 2 is heated by the electric heating jacket.
  • a melt stream flows from the annular gap formed between the extruder screw 6 and the cylinder wall 16 into the funnel-shaped melt inlet 12 of the adapter 3. From there, the melt stream is deflected to the melt outlet 13 and discharged via the outlet channel 21.
  • the seal at the open end of the cylinder 2 is taken over by the adapter 3.
  • the heating jacket 4 which extends to the end of the cylinder, simultaneously heats the adapter 3. The melt can thus be removed from the extruder 1 at a uniform temperature.
  • a temperature sensor can be arranged in the measuring connection 14, which is connected to the heating control 8. This allows the melt temperature to be controlled.
  • a pressure sensor can be installed in the measuring connection 19, which is connected to a drive control of the extruder, so that the melt flow is discharged with a constant melt pressure.
  • a pipe system that is heated with a heat transfer medium can be connected to the pipe flange 18.
  • a filter device or a pump on the pipe flange 18 or directly on the pipe section 17.
  • FIG. 1 This device is essentially identical to the device shown in FIG. In this respect, reference is made to the preceding description. The components with the same function have therefore been given identical reference numerals.
  • the adapter 3 is attached to the open end of the cylinder 2.
  • the adapter 3 is cylindrical in shape such that the outer diameter of the adapter 3 is substantially equal to the outer diameter of the cylinder 2.
  • the adapter 3 lies with a contact surface 20 on the end face of the cylinder in a pressure-tight manner.
  • a funnel-shaped melt inlet 12 is formed axially in the adapter 3 in the contact surface 20.
  • the melt inlet 12 is dimensioned such that the tip of the extruder screw 6 protruding from the cylinder 2 can protrude into the funnel-shaped melt inlet 12.
  • the funnel-shaped melt inlet 12 opens into a melt outlet 13 which is introduced axially to the cylinder in the adapter 3.
  • a pipe section 17 is connected to the adapter 3 concentrically with the melt outlet 13.
  • the adapter 3 is enclosed on the circumference by the electric heating jacket 4.
  • the electric heating jacket 4 of the extruder 2 is divided into three heaters 9.1, 9.2 and 9.3. Each of the heating zones can be regulated independently of one another by the heating controller 8.
  • the heating zone 9.3 at the end of the cylinder also serves to heat the adapter 3. It is also possible to provide the adapter 3 with an independent heating zone of the heating jacket 4. In this case, heating can be carried out exclusively on the adapter.
  • the connection between the adapter 3 and the extruder 1 can preferably be established by a screw connection.
  • the tie rods are screwed directly into the wall 16 of the cylinder 2.
  • Pipe piece 18. Pipe flange

Abstract

The invention relates to a device for extruding thermoplastic synthetic materials which is comprised of an extruder (1) and of an adapter (3) mounted on the outlet of the extruder. The adapter is attached to the open end of the cylinder (2) in a pressure sealed manner. According to the invention, the adapter (3) is configured as one piece and its dimensions are adapted to the diameter of the cylinder in such a way that the adapter (3) can be heated by an electric heating jacket (4) of the cylinder (2).

Description

Vorrichtung zum Extrudieren Extrusion device
Die Erfindung betrifft eine Vorrichtung zum Extrudieren von thermoplastischen Kunststoffen gemäß dem Oberbegriff des Anspruch 1.The invention relates to a device for extruding thermoplastic materials according to the preamble of claim 1.
Zum Extrudieren von thermoplastischen Kunststoffen werden Extruder eingesetzt, wie sie beispielsweise aus der DE 195 08 739 (Bag. 2213) bekannt sind. Dabei wird der Zylinder des Extruders durch eine oder mehrere elektrische Heizmäntel beheizt, deren Umfang des Zylinders angeordnet ist. Derartige Heizeinrichtungen haben sich aufgrund ihrer guten Temperaturführung besonders bewährt. Der thermoplastische Kunststoff wird beispielsweise als Granulat dem Extruder aufgegeben. Durch eine im Zylinder angeordnete Extruderschnecke wird das Granulat aufgeschmolzen und als thermoplastische Schmelze zum Ausgang des Extruders geführt. Um die Schmelze in ein Leitungssystem einzubringen ist es bekannt, daß der Extruder am Ausgang einen Adapter aufweist. In dem Adapter ist ein Schmelzekanal ausgebildet, der den Zylinderausgang mit einem quer zur Zylinderachse ausgerichteten Schmelzeauslaß im Adapter verbindet. Der Adapter ist aus einem Träger und einem Führungsteil aufgebaut. Der Träger wird mit dem Wärmeträgerkreislauf des Leitungssystems beheizt. Das Führungsteil, das im we- sentlichen vom dem Träger umhüllt ist, dient zur Aufnahme der Schmelzekanäle und ist daher aus einem verschleißarmen Werkstoff hergestellt. Der Adapter übernimmt somit die Umlenkung des Schmelzestroms am Ausgang des Extruders, so daß bei Instandsetzungsarbeiten die Extruderschnecke axial zum offenen Ende des Zylinders hin ausführbar ist. Des weiteren wird der Wärmeträgerkreislauf des an- geschlossenen Leitungssystems durch den Adapter begrenzt. Eine derartige Vorrichtung, bestehend aus dem Extruder und dem Adapter, erfordert zum Anschluß einer Baueinheit, z.B. einer Filtervorrichtung oder einer Pumpe erhebliche Umbaumaßnahmen. Insbesondere stellt die Einrichtung eines geschlossenen Wärmeträgerkreislaufes zur Beheizung des Adapters besondere Schwierigkeiten dar.Extruders such as are known, for example, from DE 195 08 739 (Bag. 2213) are used to extrude thermoplastics. The cylinder of the extruder is heated by one or more electric heating jackets, the circumference of which is arranged in the cylinder. Such heating devices have proven particularly useful due to their good temperature control. The thermoplastic is, for example, fed to the extruder as granules. The granulate is melted by an extruder screw arranged in the cylinder and guided to the exit of the extruder as a thermoplastic melt. In order to introduce the melt into a line system, it is known that the extruder has an adapter at the outlet. A melt channel is formed in the adapter, which connects the cylinder outlet to a melt outlet in the adapter which is oriented transversely to the cylinder axis. The adapter is made up of a carrier and a guide part. The carrier is heated with the heat transfer circuit of the pipe system. The guide part, which is essentially enveloped by the carrier, serves to receive the melt channels and is therefore made of a low-wear material. The adapter thus takes over the deflection of the melt flow at the outlet of the extruder, so that the extruder screw can be carried out axially towards the open end of the cylinder during repair work. Furthermore, the heat transfer circuit of the connected pipe system is limited by the adapter. Such a device, consisting of the extruder and the adapter, requires considerable conversion measures to connect a structural unit, for example a filter device or a pump. In particular, the establishment of a closed heat transfer circuit for heating the adapter presents particular difficulties.
Demgemäß ist es Aufgabe der Erfindung, eine Vorrichtung zum Extrudieren von thermoplastischen Kunststoffen mit einem Extruder und einem Adapter derart weiterzubilden, daß eine variable Anschlußmöglichkeit an dem Schmelzeauslaß des Adapters unabhängig von der Temperierung des Adapters gewährleistet ist.Accordingly, it is an object of the invention to develop a device for extruding thermoplastic materials with an extruder and an adapter such that a variable connection option to the melt outlet of the adapter is ensured regardless of the temperature of the adapter.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Adapter einteilig ausgebildet ist, und daß der Adapter in seinen Abmessungen an den Durchmesser des Zylinders derart angepaßt ist, daß die Beheizung des Adapters durch den elektrischen Heizmantel des Zylinders ausführbar ist. Die Erfindung zeichnet sich dadurch aus, daß für die Temperierung des Adapters keine zusätzliche Heizeinrichtung erforderlich ist. Durch die einteilige Ausbildung des Adapters ist zudem eine hohe Integration zwischen dem Extruder und dem Adapter möglich.This object is achieved in that the adapter is formed in one piece and that the dimensions of the adapter are adapted to the diameter of the cylinder such that the heating of the adapter can be carried out by the electric heating jacket of the cylinder. The invention is characterized in that no additional heating device is required for the temperature control of the adapter. The one-piece design of the adapter also enables a high level of integration between the extruder and the adapter.
Bei einer besonders vorteilhaften Weiterbildung der Erfindung ist der Adapter insbesondere zum Innendurchmesser des Zylinders angepaßt. Hierzu weist der Adapter einen Flansch auf, der in das offene Ende des Zylinders hineinragt. Zur Befestigung an dem Zylinder ist an einem Ende des Schaftes ein auskragender Flansch angeformt. An dem gegenüberliegenden Ende des Schaftes ist ein trich- terfbrmiger Schmelzeeinlauf ausgebildet, der die aus dem Zylinder austretende Kunststoffschmelze aufnimmt und zu einem Schmelzeauslaß führt. Die Temperie- rung des Adapters erfolgt hierbei unmittelbar durch den am Umfang des Zylinders angebrachten elektrischen Heizmantel.In a particularly advantageous development of the invention, the adapter is particularly adapted to the inside diameter of the cylinder. For this purpose, the adapter has a flange which projects into the open end of the cylinder. A cantilevered flange is formed on one end of the shaft for attachment to the cylinder. A funnel-shaped melt inlet is formed on the opposite end of the shaft, which receives the plastic melt emerging from the cylinder and leads to a melt outlet. The temper The adapter takes place directly through the electrical heating jacket attached to the circumference of the cylinder.
Um bei Instandhaltung einen axialen Ausbau der Extruderschnecke zu ermöglichen, ist bei einer besonders bevorzugten Ausführung der Erfindung der Schmelzeauslaß am Umfang des Schaftes ausgebildet. Gegenüberliegend zu dem Schmelzeauslaß ist in der Wand des Zylinders eine Austrittsöffhung zum Anschluß einer Schmelzeleitung eingebracht. Der Schaft liegt hierbei im wesentlichen dichtend an der Wand des Zylinders an.In order to enable axial expansion of the extruder screw during maintenance, the melt outlet is formed on the circumference of the shaft in a particularly preferred embodiment of the invention. Opposite the melt outlet, an outlet opening for connecting a melt line is made in the wall of the cylinder. The shaft lies essentially sealing against the wall of the cylinder.
Bei einer weiteren vorteilhaften Ausführung der erfindungsgemäßen Vorrichtung ist der Adapter zylinderformig ausgebildet, wobei der Außendurchmesser im wesentlichen gleich dem Außendurchmesser des Zylinders ist. Hierbei erfolgt die Temperierung des Adapters durch einen vom Umfang des Adapters anliegenden Heizmantel. Diese Ausbildung besitzt den besonderen Vorteil, daß eine speziell auf den Adapter abgestimmte Temperierung durchführbar ist. Durch Regelung des elektrischen Heizmantels, welcher in mehrere Zonen aufgeteilt ist, kann eine exakte Temperaturführung in dem Adapter erreicht werden.In a further advantageous embodiment of the device according to the invention, the adapter is cylindrical, the outer diameter being substantially equal to the outer diameter of the cylinder. In this case, the temperature of the adapter is brought about by a heating jacket lying against the circumference of the adapter. This training has the particular advantage that a temperature control specially adapted to the adapter can be carried out. By regulating the electrical heating jacket, which is divided into several zones, an exact temperature control can be achieved in the adapter.
Um eine Abführung des Schmelzestroms aus dem Zylinder ohne wesentliche Turbulenzen zu ermöglichen wird vorgeschlagen, gegenüber der Zylinderöffnung einen trichterförmigen Schmelze-einlauf axial im Adapter auszubilden, der mit dem Schmelzeauslaß verbunden ist.In order to allow the melt flow to be removed from the cylinder without significant turbulence, it is proposed to form a funnel-shaped melt inlet axially in the adapter opposite the cylinder opening, which is connected to the melt outlet.
Hierbei läßt sich der Schmelzeauslaß im Adapter quer zu der Achse des Zylinders ausbilden, so daß ein Schmelzestrom bei Austritt umgelenkt wird. Es ist jedoch möglich, den Schmelzeauslaß in den Adapter axial zu dem Zylinder auszubilden, so daß ein Schmelzestrom bei Austritt nicht umgelenkt wird.Here, the melt outlet can be formed in the adapter transversely to the axis of the cylinder, so that a melt flow is deflected when it emerges. However, it is possible to form the melt outlet in the adapter axially to the cylinder so that a melt flow is not deflected when it emerges.
Zur Überwachung des Schmelzestroms bzw. zur Regelung des Extruders weist der Adapter gemäß einer besonders vorteilhaften Weiterbildung zumindest einen Meßanschluß auf. In dem Meßanschluß kann beispielsweise ein Temperatursensor oder ein Drucksensor eingebracht sein.In accordance with a particularly advantageous development, the adapter has at least one measuring connection for monitoring the melt flow or for regulating the extruder. For example, a temperature sensor or a pressure sensor can be introduced into the measuring connection.
Der Schmelzeauslaß im Adapter kann mit jeder beliebigen, dem Extruder nachgeschalteten Baueinheit verknüpft werden. Somit läßt sich unmittelbar eine Filtervorrichtung mit dem Adapter verbinden. Um den Schmelzestrom in ein anschließendes Rohrleitungssystem zu führen, ist die Ausbildung der Erfindung gemäß Anspruch 9 und 10 besonders vorteilhaft.The melt outlet in the adapter can be linked to any assembly downstream of the extruder. A filter device can thus be connected directly to the adapter. In order to lead the melt flow into a subsequent pipeline system, the embodiment of the invention according to claims 9 and 10 is particularly advantageous.
Die erfindungsgemäße Vorrichtung wird anhand einiger Ausführungsbeispiele im folgenden unter Hinweis auf die beigefügten Zeichnungen näher beschrieben.The device according to the invention is described in more detail below with reference to some exemplary embodiments with reference to the accompanying drawings.
Es stellen dar:They represent:
Figur 1 : Schematisch ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung.Figure 1: Schematic of a first embodiment of the device according to the invention.
Figur 2: Ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung.Figure 2: Another embodiment of the device according to the invention.
In Figur 1 ist schematisch ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung dargestellt. Die Vorrichtung weist einen Extruder 1 auf. Der Ex- truder 1 besteht aus einem Zylinder 2. An einem Ende des Zylinders 2 ist ein An- trieb 5 angeordnet, der eine Extruderschnecke 6 im Innern des Zylinders 2 antreibt. Auf der Antriebsseite des Extruders 1 ist eine Fülleinrichtung 7 im Mantel des Zylinders 2 angebracht. Durch die Fülleinrichtung 7 kann dem Extruder ein thermoplastischer Kunststoff in fester Form, beispielsweise als Granulat, aufgege- ben werden.A first exemplary embodiment of a device according to the invention is shown schematically in FIG. The device has an extruder 1. The extruder 1 consists of a cylinder 2. At one end of the cylinder 2 there is an attachment drive 5 arranged, which drives an extruder screw 6 inside the cylinder 2. On the drive side of the extruder 1, a filling device 7 is attached in the jacket of the cylinder 2. Through the filling device 7, a thermoplastic in solid form, for example in the form of granules, can be added to the extruder.
Am Umfang des Zylinder 1 ist ein elektrischer Heizmantel 4 angebracht. Der Heizmantel 4 weist hierbei zwei Heizzonen 9.1 und 9.2 auf. Jede der Heizzonen 9.1 und 9.2 ist mit einer Heizsteuerung 8 verbunden und unabhängig voneinander regelbar. Die zweite Heizzone 9.2 des Heizmantels 4 umschließt den Endbereich des Zylinders 2. Am Ende des Extruder 1 weist die Vorrichtung einen Adapter 3 auf. Der Adapter 3 besteht hierbei aus einem zylinderförmigen Schaft 10 und einem an den Schaft 10 angeformten auskragenden Flansch 11. Der Schaft 10 ragt im wesentlichen dichtend in das Innere des Zylinders bis kurz vor der Extruder- Schnecke 6 hinein. Am freien Ende des Schaftes 10 ist in dem Schaft 10 ein trichterförmiger Schmelzeeinlauf 12 eingebracht. Der trichterfbrmige Schmelzeeinlauf 12 ist derart bemessen, daß die kegelige Spitze der Extruderschnecke 6 in den Schmelzeeinlauf 12 des Adapters 3 hineinragt. Der Schmelzeeinlauf 12 mündet in einen Schmelzeauslaß 13. Hierzu ist der Schmelzeauslaß radial in den Schaft 10 des Adapters 3 eingebracht. In Verlängerung des Schmelzeauslaß 13 ist quer zur Achse des Zylinders 2 in der Zylinderwand 16 eine Austrittst ffnung 15 ausgebildet. Die Austrittsöffhung 15 in der Wand 16 des Zylinders 2 wird von einem Rohrstück 17 durchdrungen, das konzentrisch zu dem Schmelzeauslaß 13 an dem Schaft 10 des Adapters 3 anliegt. Das Rohrstück 17 durchdringt den Heizmantel 4 und endet außerhalb des Extruders 1. An dem freien Ende des Rohrstücks 17 ist ein Rohrflansch 18 befestigt. Radial zu dem durch das Rohrstück 17 und dem Rohrflansch 18 gebildeten Austrittskanal ist in dem Rohrflansch 18 ein Meßanschluß 19 eingebracht. Der Adapter 3 weist ebenfalls einen Meßanschluß 14 auf , der in der Stirnseite des Flansches 11 axial zum Zylinder 2 in den Adapter 3 eingebracht ist. Der Meßanschluß 14 mündet in den Schmelzeauslaß 13. Der Adapter 3 ist über den Flansch 11 am Ende des Zylinders befestigt.An electric heating jacket 4 is attached to the circumference of the cylinder 1. The heating jacket 4 has two heating zones 9.1 and 9.2. Each of the heating zones 9.1 and 9.2 is connected to a heating control 8 and can be regulated independently of one another. The second heating zone 9.2 of the heating jacket 4 encloses the end region of the cylinder 2. At the end of the extruder 1, the device has an adapter 3. The adapter 3 here consists of a cylindrical shaft 10 and a projecting flange 11 formed on the shaft 10. The shaft 10 projects essentially sealingly into the interior of the cylinder until just before the extruder screw 6. At the free end of the shaft 10, a funnel-shaped melt inlet 12 is introduced into the shaft 10. The funnel-shaped melt inlet 12 is dimensioned such that the conical tip of the extruder screw 6 protrudes into the melt inlet 12 of the adapter 3. The melt inlet 12 opens into a melt outlet 13. For this purpose, the melt outlet is introduced radially into the shaft 10 of the adapter 3. In the extension of the melt outlet 13, an outlet opening 15 is formed transversely to the axis of the cylinder 2 in the cylinder wall 16. The outlet opening 15 in the wall 16 of the cylinder 2 is penetrated by a pipe section 17 which lies concentrically with the melt outlet 13 on the shaft 10 of the adapter 3. The pipe section 17 penetrates the heating jacket 4 and ends outside the extruder 1. A pipe flange 18 is fastened to the free end of the pipe section 17. Radial to the outlet channel formed by the pipe section 17 and the pipe flange 18, a measuring connection 19 is introduced into the pipe flange 18. The adapter 3 also has a measuring connection 14 which is introduced in the end face of the flange 11 axially to the cylinder 2 in the adapter 3. The measuring connection 14 opens into the melt outlet 13. The adapter 3 is fastened via the flange 11 at the end of the cylinder.
Im Betrieb wird dem Extruder 1 ein thermoplastischer Kunststoff in fester Form aufgegeben. Innerhalb des Zylinders 2 erfolgt ein Aufschmelzen des Kunststoffes durch die Drehung der Extruderschnecke 6. Zur Temperierung des Kunststoffes wird der Zylinder 2 durch den elektrischen Heizmantel beheizt. Am Ende tritt ein Schmelzestrom aus dem zwischen der Extruderschnecke 6 und der Zylinderwand 16 gebildeten Ringspalt in den trichterförmigen Schmelzeeinlauf 12 des Adapters 3. Von da wird der Schmelzestrom zum Schmelzeauslaß 13 umgelenkt und über den Austrittskanal 21 abgeführt. Die Abdichtung am offenen Ende des Zylinders 2 wird durch den Adapter 3 übernommen. Durch den bis zum Ende des Zylinders reichenden Heizmantel 4 wird gleichzeitig eine Beheizung des Adapters 3 erreicht. Die Schmelze läßt sich somit gleichmäßig temperiert aus dem Extruder 1 abführen. In dem Meßanschluß 14 kann beispielsweise ein Temperatursensor angeordnet sein, der mit der Heizsteuerung 8 verbunden ist. Damit kann die Schmelzetemperatur geregelt werden. In dem außerhalb des Extruders vorgesehenen Rohrflansch 18 läßt sich in dem Meßanschluß 19 beispielsweise ein Drucksensor installieren, der mit einer Antriebssteuerung des Extruders verbunden ist, so daß der Schmelzestrom mit gleichbleibendem Schmelzedruck ausgetragen wird.In operation, the extruder 1 is given a thermoplastic in solid form. Within the cylinder 2, the plastic is melted by the rotation of the extruder screw 6. To temper the plastic, the cylinder 2 is heated by the electric heating jacket. At the end, a melt stream flows from the annular gap formed between the extruder screw 6 and the cylinder wall 16 into the funnel-shaped melt inlet 12 of the adapter 3. From there, the melt stream is deflected to the melt outlet 13 and discharged via the outlet channel 21. The seal at the open end of the cylinder 2 is taken over by the adapter 3. The heating jacket 4, which extends to the end of the cylinder, simultaneously heats the adapter 3. The melt can thus be removed from the extruder 1 at a uniform temperature. For example, a temperature sensor can be arranged in the measuring connection 14, which is connected to the heating control 8. This allows the melt temperature to be controlled. In the pipe flange 18 provided outside the extruder, for example, a pressure sensor can be installed in the measuring connection 19, which is connected to a drive control of the extruder, so that the melt flow is discharged with a constant melt pressure.
An dem Rohrflansch 18 läßt sich ein Leitungssystem anschließen, daß mit einem Wärmeträger beheizt ist. Es ist jedoch auch möglich, an den Rohrflansch 18 oder unmittelbar an das Rohrstück 17 eine Filtervorrichtung oder eine Pumpe anzuordnen. In Figur 2 ist ein weiteres Ausführungsbeispiel der erfindungsgemäßen Vorrichtung schematisch dargestellt. Diese Vorrichtung ist im wesentlichen identisch mit der in Figur 1 dargestellten Vorrichtung. Insoweit wird auf die vorhergehende Beschreibung Bezug genommen. Die Bauteile mit gleicher Funktion haben daher auch identische Bezugszeichen erhalten.A pipe system that is heated with a heat transfer medium can be connected to the pipe flange 18. However, it is also possible to arrange a filter device or a pump on the pipe flange 18 or directly on the pipe section 17. A further exemplary embodiment of the device according to the invention is shown schematically in FIG. This device is essentially identical to the device shown in FIG. In this respect, reference is made to the preceding description. The components with the same function have therefore been given identical reference numerals.
Nachfolgend werden die Unterschiede der in Figur 2 dargestellten Vorrichtung gegenüber der in Figur 1 gezeigten Vorrichtung beschrieben.The differences between the device shown in FIG. 2 and the device shown in FIG. 1 are described below.
Am offenen Ende des Zylinders 2 ist der Adapter 3 befestigt. Der Adapter 3 ist zylinderförmig derart ausgebildet, daß der Außendurchmesser des Adapters 3 im wesentlichen gleich dem Außendurchmesser des Zylinders 2 ist. Der Adapter 3 liegt mit einer Anlagefläche 20 an der Stirnseite des Zylinders druckdicht an. In der Anlagefläche 20 ist axial in den Adapter 3 ein trichterförmiger Schmelzeein- lauf 12 ausgebildet. Der Schmelzeeinlauf 12 ist derart dimensioniert, daß die aus dem Zylinder 2 herausragende Spitze der Extruderschnecke 6 in den trichterförmigen Schmelzeeinlauf 12 hineinragen kann. Der trichterfbrmige Schmelzeeinlauf 12 mündet in einen Schmelzeauslaß 13, der axial zum Zylinder in den Adapter 3 eingebracht ist. Konzentrisch zu dem Schmelzeauslaß 13 ist ein Rohrstück 17 mit dem Adapter 3 verbunden. Der Adapter 3 wird am Umfang durch den elektrischen Heizmantel 4 umschlossen. Der elektrische Heizmantel 4 des Extruders 2 ist in drei Heizungen 9.1, 9.2 und 9.3 aufgeteilt. Jede der Heizzonen ist unabhängig voneinander durch die Heizsteuerung 8 regelbar. Die Heizzone 9.3 am Ende des Zylinders dient gleichzeitig zur Beheizung des Adapters 3. Es ist auch möglich, den Adapter 3 mit einer eigenständigen Heizzone des Heizmantels 4 zu versehen. Dabei kann eine ausschließlich auf den Adapter abgestimmte Beheizung erfolgen. Bei der in Figur 1 und 2 gezeigten Vorrichtung läßt sich die Verbindung zwischen dem Adapter 3 und dem Extruder 1 bevorzugt durch eine Schraubenverbindung herstellen. Hierbei werden die Zuganker direkt in die Wand 16 des Zylinders 2 eingeschraubt. The adapter 3 is attached to the open end of the cylinder 2. The adapter 3 is cylindrical in shape such that the outer diameter of the adapter 3 is substantially equal to the outer diameter of the cylinder 2. The adapter 3 lies with a contact surface 20 on the end face of the cylinder in a pressure-tight manner. A funnel-shaped melt inlet 12 is formed axially in the adapter 3 in the contact surface 20. The melt inlet 12 is dimensioned such that the tip of the extruder screw 6 protruding from the cylinder 2 can protrude into the funnel-shaped melt inlet 12. The funnel-shaped melt inlet 12 opens into a melt outlet 13 which is introduced axially to the cylinder in the adapter 3. A pipe section 17 is connected to the adapter 3 concentrically with the melt outlet 13. The adapter 3 is enclosed on the circumference by the electric heating jacket 4. The electric heating jacket 4 of the extruder 2 is divided into three heaters 9.1, 9.2 and 9.3. Each of the heating zones can be regulated independently of one another by the heating controller 8. The heating zone 9.3 at the end of the cylinder also serves to heat the adapter 3. It is also possible to provide the adapter 3 with an independent heating zone of the heating jacket 4. In this case, heating can be carried out exclusively on the adapter. In the device shown in FIGS. 1 and 2, the connection between the adapter 3 and the extruder 1 can preferably be established by a screw connection. The tie rods are screwed directly into the wall 16 of the cylinder 2.
BezugszeichenlisteReference list
1. Extruder1. Extruder
2. Zylinder 3. Adapter2nd cylinder 3rd adapter
4. Heizmantel4. Heating jacket
5. Antrieb5. Drive
6. Extruderschnecke6. Extruder screw
7. Einfülleinrichtung 8. Heizsteuerung7. Filling device 8. Heating control
9. Heizzonen9. Heating zones
10. Schaft10. Shank
11. Flansch11. Flange
12. Schmelzeinlauf 13. Schmelzauslaß12. Melt inlet 13. Melt outlet
14. Meßanschluß14. Measuring connection
15. Austrittsöffhung15. Exit opening
16. Wand16. Wall
17. Rohrleitungsstück 18. Rohrflansch17. Pipe piece 18. Pipe flange
19. Meßanschluß 20. Anlagefläche19. Measuring connection 20. Contact surface
21. Austrittskanal 21 exit channel

Claims

Patentansprüche claims
1. Vorrichtung zum Extrudieren von thermoplastischen Kunststoffen, mit einem Extruder (1), dessen Zylinder (2) durch einen am Um- fang des Zylinders (2) angebrachten elektrischen Heizmantel (4) beheizbar ist, und mit einem beheizten Adapter (3), welcher am Ausgang des Extruders (1) druckdicht mit dem Zylinder (2) verbunden ist und welcher einen Schmelzeauslaß (13) aufweist, dadurch gekennzeichnet, daß der Adapter (3) einteilig ausgebildet ist, und daß der Adapter (3) in seinen Abmessungen an den Durchmessern des Zylinders (2) derart angepaßt ist, daß die Beheizung des Adapters (3) durch den elektrischen Heizmantel (4) des Zylinders (2) ausführbar ist.1. Device for extruding thermoplastic materials, with an extruder (1), the cylinder (2) of which can be heated by an electric heating jacket (4) attached to the circumference of the cylinder (2), and with a heated adapter (3), which is connected to the cylinder (2) in a pressure-tight manner at the outlet of the extruder (1) and which has a melt outlet (13), characterized in that the adapter (3) is constructed in one piece and in that the dimensions of the adapter (3) the diameters of the cylinder (2) are adapted such that the adapter (3) can be heated by the electric heating jacket (4) of the cylinder (2).
2. Vomchtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Adapter (3) einen Flansch (11) und einen zum Flansch (11) abgestuften Schaft (10) aufweist, daß der Flansch (11) an dem Zylinder (2) befestigt ist, daß der Schaft (10) in das offene Ende des Zy- linders (2) hineinragt, und daß am freien Ende des Schaftes (10) ein trichterförmiger Schmelzeeinlauf (12) ausgebildet ist, der mit dem Schmelzseauslaß (13) verbunden ist.2. arrangement according to claim 1, characterized in that the adapter (3) has a flange (11) and a shaft (10) stepped to the flange (11), that the flange (11) is fastened to the cylinder (2), that the shaft (10) protrudes into the open end of the cylinder (2) and that at the free end of the shaft (10) a funnel-shaped melt inlet (12) is formed which is connected to the melt outlet (13).
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Schmelzeauslaß (13) am Umfang des Schaftes (10) ausgebildet ist, und daß der Zylinder (2) in seiner Wand (16) eine dem Schmelzeauslaß (13) gegenüberliegende Austrittsöffnung (15) zum Anschluß einer Schmelzeleitung (17) aufweist, wobei der Schaft (10) im wesentlichen dichtend an der Wand (16) des Zylinders (2) anliegt.3. Apparatus according to claim 2, characterized in that the melt outlet (13) is formed on the circumference of the shaft (10) and that the cylinder (2) in its wall (16) has an outlet opening (15) opposite the melt outlet (13). for connecting a melt line (17), the shaft (10) is essentially sealing against the wall (16) of the cylinder (2).
4. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Adapter (3) zylinderförmig ausgebildet ist, wobei der Außendurchmesser im wesentlichen gleich dem Außendurchmesser des Zylinders (2) ist, und daß der Heizmantel (4) sich zumindest teilweise über den Umfang des Adapters (3) erstreckt.4. The device according to claim 1, characterized in that the adapter (3) is cylindrical, the outer diameter is substantially equal to the outer diameter of the cylinder (2), and that the heating jacket (4) is at least partially over the circumference of the adapter (3) extends.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Adapter (3) mit einer Anlage fläche (20) das offene Ende des Zylinders (2) verschließt, daß gegenüber der Zylinderöffhung ein trichterförmiger Schmelzeeinlauf (12) axial im Adapter (3) ausgebildet ist, der mit dem Schmelzseauslaß (13) verbunden ist.5. The device according to claim 4, characterized in that the adapter (3) with a contact surface (20) closes the open end of the cylinder (2) that opposite the cylinder opening, a funnel-shaped melt inlet (12) axially formed in the adapter (3) which is connected to the melt outlet (13).
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der Schmelzeauslaß (13) im Adapter (3) quer zu der Achse des Zylinders (2) ausgebildet ist, so daß ein Schmelzestrom bei Austritt umgelenkt wird.6. The device according to claim 5, characterized in that the melt outlet (13) in the adapter (3) is formed transversely to the axis of the cylinder (2), so that a melt flow is deflected upon exit.
7. Vorrichtung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Schmelzeauslaß (13) in dem Adapter axial zu dem Zylinder (2) ausgebildet ist, so daß ein Schmelzestrom bei Austritt nicht umgelenkt wird.7. Device according to one of the preceding claims, characterized in that the melt outlet (13) is formed axially in the adapter to the cylinder (2), so that a melt flow is not deflected upon exit.
8. Vorrichtung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß der Adapter (3) zumindest einen Meßanschluß (14) aufweist, der mit dem Schmelzeauslaß (13) oder dem Schmelzeeinlauf (12) verbunden ist.8. Device according to one of the preceding claims, characterized in that the adapter (3) has at least one measuring connection (14) which is connected to the melt outlet (13) or the melt inlet (12).
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Adapter (3) mit einem konzentrisch zu dem Schmelzeauslaß (13) angeordneten Rohrleitungsstück (17) verbunden ist, welches an seinem freien Ende einen Rohrleitungsflansch (18) aufweist.9. Device according to one of claims 1 to 8, characterized in that the adapter (3) with a concentrically to the melt outlet (13) arranged pipe section (17) is connected, which has a pipe flange (18) at its free end.
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Rohrleitungsflansch (18) einen zusätzlichen Meßanschluß (19) aufweist. 10. The device according to claim 9, characterized in that the pipe flange (18) has an additional measuring connection (19).
PCT/EP2000/002765 1999-03-31 2000-03-29 Extrusion device WO2000059707A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10080804T DE10080804D2 (en) 1999-03-31 2000-03-29 Extrusion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914545 1999-03-31
DE19914545.8 1999-03-31

Publications (1)

Publication Number Publication Date
WO2000059707A1 true WO2000059707A1 (en) 2000-10-12

Family

ID=7903031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002765 WO2000059707A1 (en) 1999-03-31 2000-03-29 Extrusion device

Country Status (2)

Country Link
DE (1) DE10080804D2 (en)
WO (1) WO2000059707A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262156A (en) * 1964-04-21 1966-07-26 Barmag Barmer Maschf Screw extruder for spinning filaments
US3309736A (en) * 1964-05-13 1967-03-21 Bayer Ag Worm press
US4017240A (en) * 1975-11-19 1977-04-12 Rubbermaid Incorporated Die for extruding sheet material
GB1523809A (en) * 1975-07-28 1978-09-06 Standard Oil Co Extrusion head
JPS62288025A (en) * 1986-06-06 1987-12-14 Hitachi Cable Ltd Control of extruding temprature in synthetic resin extrusion molder
JPH04144727A (en) * 1990-10-06 1992-05-19 Nissei Plastics Ind Co Heating apparatus for synthetic-resin molding machine
US5153008A (en) * 1988-10-15 1992-10-06 Heinrich Koch Plastmaschinen Gmbh & Co. Kg Extrusion welder
JPH0631792A (en) * 1992-07-16 1994-02-08 Inoac Corp Extrusion equipment
US5399308A (en) * 1990-12-20 1995-03-21 Woodhams; Raymond T. Process for the continuous production of high modulus articles from high molecular weight plastics
EP0849056A1 (en) * 1996-12-19 1998-06-24 David Ing. Lindner Band saw with device for covering the saw band slot

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262156A (en) * 1964-04-21 1966-07-26 Barmag Barmer Maschf Screw extruder for spinning filaments
US3309736A (en) * 1964-05-13 1967-03-21 Bayer Ag Worm press
GB1523809A (en) * 1975-07-28 1978-09-06 Standard Oil Co Extrusion head
US4017240A (en) * 1975-11-19 1977-04-12 Rubbermaid Incorporated Die for extruding sheet material
JPS62288025A (en) * 1986-06-06 1987-12-14 Hitachi Cable Ltd Control of extruding temprature in synthetic resin extrusion molder
US5153008A (en) * 1988-10-15 1992-10-06 Heinrich Koch Plastmaschinen Gmbh & Co. Kg Extrusion welder
JPH04144727A (en) * 1990-10-06 1992-05-19 Nissei Plastics Ind Co Heating apparatus for synthetic-resin molding machine
US5399308A (en) * 1990-12-20 1995-03-21 Woodhams; Raymond T. Process for the continuous production of high modulus articles from high molecular weight plastics
JPH0631792A (en) * 1992-07-16 1994-02-08 Inoac Corp Extrusion equipment
EP0849056A1 (en) * 1996-12-19 1998-06-24 David Ing. Lindner Band saw with device for covering the saw band slot

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 171 (M - 700) 21 May 1988 (1988-05-21) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 426 (M - 1306) 8 September 1992 (1992-09-08) *

Also Published As

Publication number Publication date
DE10080804D2 (en) 2001-07-12

Similar Documents

Publication Publication Date Title
DE2214571C3 (en) Device for soaking and coating thread-like material with a flowable polymeric resin
DE2456986B2 (en) DEVICE FOR CALIBRATING AND COOLING OF EXTRUDED PLASTIC PIPES
EP0033158A1 (en) Device for the continuous processing of vulcanizable or cross-linkable rubber, elastomers or plastics
WO2018192677A1 (en) Cooling during the extrusion of melts
DE2924317C2 (en) Two-stage extrusion device for thermoplastic molding compounds, especially for powdered plastics
EP2404735B1 (en) Method and device for starting a pipe extrusion line
DE10356423B4 (en) Extruder with material input through the housing
EP0600214A1 (en) Method and apparatus for the continuous manufacturing of a composite pipe having a substantially smooth external wall portion
DE102006001171A1 (en) Planet roller extruder comprises a side arm extruder to which a vacuum can be applied for degassing
EP1916089B1 (en) Device for extruding hollow rods
DE2301464C2 (en) Method and apparatus for expansion drying liquid containing rubbery polymeric materials
EP0012795B1 (en) Screw extruder for processing plastic, rubber or the like
WO2000059707A1 (en) Extrusion device
EP0936965A1 (en) Injection moulding nozzle
WO2003031131A1 (en) Continuous production of elastomer mixtures for producing rubber
EP2376273A1 (en) Hand-held extruder comprising a handle for single-handed operation
DE102017106097B4 (en) Extruder device and extrusion process
EP0558020B1 (en) Wall thickness gauge with sizing tool
EP1923199A2 (en) Device for extruding hollow rods
EP1245366B1 (en) Locking means for controlling the flow of a flowable medium
DE4235430A1 (en) Single screw extruder with close temp control by inlet - has one first cooled grooved bush and then one heated smooth bush, both shrunk inside separate sheaths not connected thermally
DE2302597C3 (en) Method and device for producing strands from crosslinkable thermoplastics or vulcanizable elastomers
DE4221920C2 (en) Wall thickness measuring device with calibration device
DE3936239A1 (en) RING NOZZLE FOR EXTRESS PRESSES, PREFERABLY FILM BLOW HEAD
DE3212159C2 (en) Method for sealing a rotating component in a stationary, hollow-cylindrical component of a processing machine for thermoplastics, rubber or the like and processing machine for carrying out the method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN DE JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
REF Corresponds to

Ref document number: 10080804

Country of ref document: DE

Date of ref document: 20010712

WWE Wipo information: entry into national phase

Ref document number: 10080804

Country of ref document: DE

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP