DE1529984A1 - Method and device for the production of extruded bodies with widenings and / or thickenings - Google Patents
Method and device for the production of extruded bodies with widenings and / or thickeningsInfo
- Publication number
- DE1529984A1 DE1529984A1 DE19611529984 DE1529984A DE1529984A1 DE 1529984 A1 DE1529984 A1 DE 1529984A1 DE 19611529984 DE19611529984 DE 19611529984 DE 1529984 A DE1529984 A DE 1529984A DE 1529984 A1 DE1529984 A1 DE 1529984A1
- Authority
- DE
- Germany
- Prior art keywords
- strand
- extruder
- upsetting
- thickenings
- widenings
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 22
- 230000008719 thickening Effects 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0003—Moulding articles between moving mould surfaces, e.g. turning surfaces
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/18—Pleated or corrugated hoses
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92438—Conveying, transporting or storage of articles
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/355—Conveyors for extruded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/003—Tubular articles having irregular or rough surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
"Verfahren und Vorrichtung zur Herstellung von Strangkörpern mit Aufweitungen und/oder Verdickunven". "Method and device for the production of extruded bodies with Widenings and / or thickening ".
Die Erfindung betrifft eine Weiterbildung des Verfahrens und der Vorrichtung nach dem Patent--- (Patentanmeldung K-43 015 X/39a). The invention relates to a development of the method and the Device according to the patent --- (patent application K-43 015 X / 39a).
Das Hauptpatent betrifft ein Verfahren zur Herstellung von Rohren mit Aufweitungen und/oder Verdickungen, insbesondere in mind stens einem Endbereich, aus im Strangpressverfahren verformbaren Werkstoff, insbesondere aus vorzugsweise thermoplastischem Kunststoff, wobei der in an sich bekannter Weise aus dem Extruder austretende Rohrstrang in noch verformbarem Zustand in den gewunschten Abstanden in den Aufweitungen und/oder Verdickungen entsprechenden Längen auf eine höhere Wanddicke gestaucht wird, und später die Aufweitung und/oder Weiterbearbeitung der Verdickung in an sich bekannter Veise erfolgt, vorzugsweise durch Einwirkung Über-bzw. Unterdruck in einer Matrize bzv. über einer Patrize, oder durch mechanische Bearbeitung oder durch Pressen in einer Form. The main patent relates to a method for producing pipes with widenings and / or thickenings, in particular in at least one end area, made of material that can be deformed in the extrusion process, in particular preferably thermoplastic plastic, which in a known manner from the extruder Exiting pipe string in the still deformable state at the desired distances corresponding in the widenings and / or thickenings Lengths is compressed to a greater wall thickness, and later the expansion and / or further processing the thickening takes place in a manner known per se, preferably by action About or. Negative pressure in a die or over a patrix, or by mechanical means Machining or pressing in a mold.
Die vorliegende Erfindung bildet das Verfahren und die Vorrichtung nach dem Hauptpatent dahingehend weiter, daB gemäß diesem Verfahren und dieser Vorrichtung neben Rohren nicht nur beliebige Hohiprofile, sondern auch beliebige Vollprofile mit Verdickungen versehen werden, denn es leuchtet ein, daß das Verfahren na@@ dem Hauptpatent lediglich durch Änderung der Düse des Extruders und gegebenenfalls der Kalibriereinriohtung ohne weiteres auch auf anuere Profile als Rohrprofile angewendet werden kann.The present invention forms the method and apparatus according to the main patent to the effect that according to this method and this device In addition to pipes, not only any hollow profiles, but also any solid profiles be provided with thickening, because it is obvious that the procedure na @@ dem Main patent only by changing the nozzle of the extruder and possibly the Kalibriereinriohtung easily applied to other profiles than pipe profiles can be.
Dementsprechend ermöglicht die Erfindung die Herstellung vieler, bisher nur im Spritzgußverfahren erzeugbaren Gegenstände auch im Strangpress-bzw. Extrusionsverfahren.Accordingly, the invention enables many to be manufactured to date Objects that can only be produced by injection molding, also by extrusion or. Extrusion process.
So kann gemäß der Erfindung beispielsweise eine Platte extrudiert werden, welche sowohl Längs- als auch Querrippen aufweist. Die Längsrippen werden dabei durch entsprechende Profilierung der Extrusionsdüse gebildet, während die Querrippen en veils durch Stauchung des aus der Duse austretenden Stranges erzeugt werden.For example, according to the invention, a plate can be extruded which has both longitudinal and transverse ribs. The longitudinal ribs are thereby through appropriate Profiling of the extrusion nozzle formed, while the transverse ribs en veils by compression of the strand emerging from the nozzle be generated.
Ein anderes Anwendungsbeispiel der vorliegenden Erfindung sind beispielsweise Kunststoffstäbe, die die den Enden Verdickungen aufweisen, invrelche Gelviilde eingeschnitten werden sollen. Ein weiteres Beispiel sind etwa Vierkanthohlprofile, welche zur Versteifung in bestimmten Abständen mit rund umlaufenden Querrippen versehen sind. Die Zahl dieser Beispiele läßt sich beliebig fortsetzen.Another application example of the present invention is, for example Plastic rods, which have thickened ends, incised inrelche Gelviilde should be. Another example are square hollow profiles, which are used for stiffening are provided with circumferential transverse ribs at certain intervals. The number these examples can be continued indefinitely.
Vorteilhaft wird das erfindungsgemäße Verfahren so durchgeführt, daL bei thermoplastischem Kunststoff das Verdicken des Stranges vor Beendigung des Auspolymerisierens erfolgt.The method according to the invention is advantageously carried out in such a way that in the case of thermoplastics, the thickening of the strand before the end of polymerisation he follows.
Vorteilhaft wird das erfindungsgemäße Verfahren bei Erzeugung von Hohlprofilen mit innenliegenden Pippen oder Verdickungen so durchgeführt, daß der aus der : Extruder austretende Strang durch eine gekühlte Kalibrierbüchse geführt wird, in der er in wesentlichen auspolymerisiert und daß das Stauchen in dieser Büchse erfolgt.The method according to the invention is advantageous when producing Hollow profiles with internal piping or thickenings carried out so that the from the: Extruder exiting strand passed through a cooled calibration sleeve is in which it is polymerized to a large extent and that the upsetting in this Rifle takes place.
Vorteilhaft wird das erfindungsgemäße Verfahren so durchgeführt, daß das Stauchen durch Verringern der Geschwindigkeit der dem Extruder nachgeschalteten Abzugsvorrichtung für den fertigen Strang erfolgt.The method according to the invention is advantageously carried out in such a way that that upsetting by reducing the speed of those downstream of the extruder Take-off device for the finished strand takes place.
Vorteilhaft wird das erfindungsgemäße Verfahren alternativ so durchgeführt, daß das Stauchen durch Erhöhung der Ausbringgeschwindigkeit des Extruders bei konstanter Geschwindigkeit der Abziehvorrichtung erfolgt.Alternatively, the method according to the invention is advantageously carried out in such a way that that the upsetting by increasing the discharge speed of the extruder at a constant Speed of the puller takes place.
Vorteilhaft wird das erfindungsgemäße Verfahren bei Erzeugung von Hohlprofilen so durchgeführt, daß das Stauchen unter im Innern des Stranges herrschendem Uberdruck erfolgt.The method according to the invention is advantageous when producing Hollow profiles carried out so that the upsetting under prevailing inside the strand Overpressure takes place.
Zur Durchführung des erfindungsgemäßen Verfahrens dient vorteilhaft eine Vorrichtung mit einem Extruder, einer dieseb nachgeschalteten Kalibriereinrichtung, vorzugsweise einem diesem nachgeordneten Wasserbad und schließlich einer Abziehvorrichtung, elche mit einer automatisch wirkenden Einrichtung versehen ist, die in den gewünschten Abständen die Abziehgeschwindigkeit periodisch verringert, so daß in oder auf der Kalibriervorrichtung während der Zeit verrinerter Geschwindigkeit eine Stauchung des Stranges auftritt.To carry out the method according to the invention is advantageous a device with an extruder, this downstream calibration device, preferably a downstream water bath and finally a pulling device, elche is provided with an automatically acting device, which in the desired At intervals the peeling speed is periodically reduced so that in or on the Calibration device during the time of reduced speed a compression of the strand occurs.
Sollen Hohlprofile mit sich nach innen erstreckenden Verdickungen erzeugt werden, so ist die Kalibriervorrichtung vorteilhaft, eine den aus dem Extruder austretendem Strang umgebende, wassergekühlte entsprechend profilierte Büchse.Shall hollow profiles with inwardly extending thickenings are generated, the calibration device is advantageous, one from the extruder water-cooled, appropriately profiled bushing surrounding the emerging strand.
Bei der Erzeugung von Hohlprofilsträngen ist vorteilhaft, eine Leitung für ein Druckgas, vorzugsweise Luft vorgesehen, durch welche im Inneren des in der Büchse befindlichen Teiles des Stranges ein diesen an die BUchse anpressender Überdruck erzeugt wird.When producing hollow profile strands, a line is advantageous for a compressed gas, preferably air, through which inside the in the The part of the strand located in the bushing has an overpressure that presses it against the bushing is produced.
Sollen Hohlprofile mit sich nach auben erstreckenden Verdickungen erzeugt werden, so ist die Kalibriervorrichtung ein, vorzugsweise eane Verlängerung des Kanals der Extrusionsoffnung darstellender Dorn, dessen Profil gleich dem Innenprofil des Stranges ist.Shall hollow profiles with thickened areas extending outwards are generated, the calibration device is a, preferably an extension of the channel of the extrusion opening representing the mandrel, the profile of which is the same as the inner profile of the strand is.
ITachfolgend ist anhand der beiliegenden Zeichnung ein vorteilhaftes Beispiel der Erfindung beschrieben : In der Zeichnung stellt 1 die Austrittsoffnung eines.The following is an advantageous one based on the accompanying drawing Example of the invention described: In the drawing, 1 represents the outlet opening one.
Extruders dar. Diese Öffnung ist vierkantig und besitzt im Innern einen kleinen vierkantigen Kern 2, so daß aus dem Extruder ein Vierkanthohlprofil extrudiert wird.Extruder. This opening is square and has inside a small square core 2, so that from a square hollow profile to the extruder is extruded.
Nach vorn ist der Kern zu einem Kalibrierdorn 3 verlRngert.The core is extended to the front to form a calibration mandrel 3.
Hinter dem Kern kann eine Kühlvorrichtung für den austretenden Strang beispielsweise in Form einer Brause 4 vorgesehen sein. Noch weiter im Abstand ~ vom Extruder ist eine Abziehvorrichtung 5 vorgesehen, welche aus federnd gelagerten vom Getriebe 6 angetriebenen Rollen 7'besteht. Die federnde Lagerung der Rollen 7 sollen es den Rollen ermöglichen, über die im Abstand im Hohlprofil vorgesehenen Verdickungen 8 hinweg zu steigen, so daB diese das Abziehen des profilierten Stranges 9 nicht verhindern.A cooling device for the exiting strand can be installed behind the core be provided in the form of a shower 4, for example. Even further in the distance ~ a pulling device 5 is provided from the extruder, which consists of resiliently mounted from the gear 6 driven rollers 7 'exists. The resilient mounting of the rollers 7 should make it possible for the rollers to use the spacing provided in the hollow profile Thickenings 8 to rise away, so that this pulling off the profiled strand 9 do not prevent.
Das Getriebe 6 zeichnet sich durch einen stufenvweisen Steuermechanismus aus, welcher entsprechend den gewünschten Abständen der Verdickungen 8 von dem Profilstrang 9 die Geschwindigkeit der Abziehvorrichtung 6 verringert. Auf diese Weise tritt, wenn die Abziehgesfhwindigkeit verringert ist, mehr Merkstoff aus der Extrudedüse 1 aus, als abgezogen. ird. Dadurch staucht sich dieser Vlerkstoff zu einem Wulst, der die Verdickung daratellt. In der Zeichnung ist die Vorrichtung gerade in einem Zustand dargestellt, in welchem die Abziehvorrichtung wieder auf die normale Abziehgeschxvindigkeit heraufgesdaltet wurde und die Erzeugung einer Verdickung gerade beendet ist.The transmission 6 is characterized by a stepwise control mechanism from which, according to the desired spacing of the thickenings 8 from the profile strand 9 the speed of the puller 6 is reduced. In this way, as the withdrawal speed is decreased, more material comes out of the extrusion nozzle 1 off than deducted. earth. This compresses this non-ferrous material into a bead, of the thickening daratellt. In the drawing is the device just shown in a state in which the puller is back on the normal withdrawal rate has been increased and the generation of a Thickening has just ended.
Claims (10)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK43015A DE1209282B (en) | 1961-02-25 | 1961-02-25 | Method and device for the production of pipes with widenings and / or thickenings |
DEK45267A DE1255293B (en) | 1961-02-25 | 1961-11-22 | Device for creating widenings in the area of the ends of pipes |
DEK0045326 | 1961-11-30 | ||
US176179A US3205535A (en) | 1961-02-25 | 1962-02-23 | Apparatus for shaping the end of a tube |
US310186A US3264383A (en) | 1961-02-25 | 1963-08-28 | Extrusion methods |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1529984A1 true DE1529984A1 (en) | 1969-10-30 |
Family
ID=27512132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19611529984 Pending DE1529984A1 (en) | 1961-02-25 | 1961-11-30 | Method and device for the production of extruded bodies with widenings and / or thickenings |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1529984A1 (en) |
FI (1) | FI43356B (en) |
NL (1) | NL136476C (en) |
NO (1) | NO128986C (en) |
SE (2) | SE301707B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021417A1 (en) * | 1979-06-30 | 1981-01-07 | Victroplas Limited | Method and apparatus for plastic extrusion and thereby produced elongated members |
-
1961
- 1961-11-30 DE DE19611529984 patent/DE1529984A1/en active Pending
-
1962
- 1962-01-19 NL NL273773A patent/NL136476C/en active
- 1962-01-24 SE SE775/62A patent/SE301707B/sv unknown
- 1962-01-24 SE SE6802900*3A patent/SE334017C/sv unknown
- 1962-01-26 NO NO143002A patent/NO128986C/no unknown
- 1962-02-23 FI FI0377/62A patent/FI43356B/fi active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021417A1 (en) * | 1979-06-30 | 1981-01-07 | Victroplas Limited | Method and apparatus for plastic extrusion and thereby produced elongated members |
Also Published As
Publication number | Publication date |
---|---|
NL273773A (en) | 1964-05-11 |
FI43356B (en) | 1970-11-30 |
SE334017B (en) | 1971-04-05 |
NL136476C (en) | 1974-01-08 |
NO128986C (en) | 1975-04-09 |
SE301707B (en) | 1968-06-17 |
SE334017C (en) | 1975-06-30 |
NO128986B (en) | 1974-12-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1209282B (en) | Method and device for the production of pipes with widenings and / or thickenings | |
DE1016009B (en) | Process for the extrusion of hollow bodies made of thermoplastic material | |
DE1208477B (en) | Method and device for producing hollow strings from thermoplastic material | |
DE2042031A1 (en) | Extruding corrugated thermoplast tube - with smooth tube inside or outside bonded to it | |
DE2403618A1 (en) | DEVICE FOR PRODUCING A DOUBLE-WALLED PLASTIC PIPE | |
DE2542630C2 (en) | ||
DE3781983T2 (en) | METHOD AND DEVICE FOR EXTRUDING, ESPECIALLY EDIBLE MEASURES. | |
DE3426060A1 (en) | EXTRUDED MULTIPLE PLATE WITH CORRUGATED BRIDGES AND METHOD AND DEVICE FOR THEIR PRODUCTION | |
US4189293A (en) | Extrusion head | |
DE1529984A1 (en) | Method and device for the production of extruded bodies with widenings and / or thickenings | |
DE2700478C2 (en) | Process for the production of a heat and sound insulated pipe | |
DE2051390A1 (en) | Process for continuous He testify from pipes made of crosslinked polyols fm plastics | |
DE2244294A1 (en) | PROCESS AND EQUIPMENT FOR CALIBRATING THE OUTER SHEATH AND COOLING EXTRUDED HOLLOW PROFILE STRIPS MADE OF THERMOPLASTIC PLASTICS | |
DE4034254C2 (en) | ||
DE962719C (en) | Stretched shapes seamlessly sheathed with thermoplastics | |
DE2316835C3 (en) | Method and device for producing a composite pipe from thermoplastics | |
DE2362444A1 (en) | Smooth bore externally ribbed tube continuously extruded - using smooth mandrel extending from extruder into moving belt mould | |
DE2709395C2 (en) | Method and device for the continuous production of a finned tube with a smooth inner channel | |
DE1073189B (en) | Process for the production of elastic, deformable pipes from vinylidene chloride polymers which are crystalline under normal conditions | |
DE3921853C2 (en) | Process for producing a diluted tube by coextrusion and tube drawing mold for carrying it out | |
CH488546A (en) | Method and device for the production of pipe bends from plastic | |
DE2412364A1 (en) | METHOD AND DEVICE FOR THE PRODUCTION OF PROFILES FROM THERMOPLASTIC MATERIALS WITH REDUCED WEIGHT | |
DE2016581A1 (en) | Method and device for calibrating continuously extruded plastic pipe bodies | |
DE2213561A1 (en) | METHOD AND DEVICE FOR FORMING A SLEEVE WITH A CIRCULAR CORRUGATION AT THE END OF A PIPE MADE OF THERMOPLASTIC PLASTIC | |
DE19857574B4 (en) | Device for cooling and calibrating extruded plastic profiles |