WO1987004113A1 - Apparatus and method for the production of ribbed pipes - Google Patents

Apparatus and method for the production of ribbed pipes Download PDF

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Publication number
WO1987004113A1
WO1987004113A1 PCT/FI1986/000072 FI8600072W WO8704113A1 WO 1987004113 A1 WO1987004113 A1 WO 1987004113A1 FI 8600072 W FI8600072 W FI 8600072W WO 8704113 A1 WO8704113 A1 WO 8704113A1
Authority
WO
WIPO (PCT)
Prior art keywords
kernel
zone
pipe
diameter
core
Prior art date
Application number
PCT/FI1986/000072
Other languages
English (en)
French (fr)
Inventor
Jyri Järvenkylä
Ingemar Carlsson
Original Assignee
Uponor N.V.
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 Uponor N.V. filed Critical Uponor N.V.
Priority to DE8686904188T priority Critical patent/DE3678449D1/de
Priority to AT86904188T priority patent/ATE61968T1/de
Priority to BR8607206A priority patent/BR8607206A/pt
Publication of WO1987004113A1 publication Critical patent/WO1987004113A1/en
Priority to NO873748A priority patent/NO873748L/no
Priority to DK473087A priority patent/DK164091C/da

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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/03—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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
    • 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
    • B29C48/78—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
    • B29C48/865—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
    • B29C48/25—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
    • B29C48/87—Cooling
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles

Definitions

  • This invention relates to an apparatus for the production of ribbed pipes having a smooth inner face, of a plastic material, said apparatus comprising a core which is formed by a spindle, a conically enlarging mandrel positioned after said spindle in the production direction of the apparatus, and a kernel which has a substantially constant diameter and which is positioned after said mandrel; an extrusion sleeve which surrounds said spindle so as to form a nozzle for the material together with the core?
  • the invention is also concerned with a method for the production of ribbed pipes.
  • Patent Specification 1 431 796 discloses an extrusion moulding method which is characterized by the step of creating a rather low moulding pressure mainly by means of the extruder.
  • DE Patent Specifications 2 362 444 and 1 233 128 and FR Patent Specification 7 315 485 dis ⁇ close injection moulding methods which are character ⁇ ized by a small closed moulding space wherein there prevails a high pressure.
  • press moulding methods are known which are character ⁇ ized by an open moulding space and by the step of
  • SUBSTITUTESHEET ISA/S ⁇ creating a pressure by means of the extruder on one hand and by means of the traction force of a conically enlarging part of the core, i.e. the mandrel, and the chill moulds on the other hand.
  • a similar straight- kernel structure is also known from the manufacturing technique of double-walled corrugated pipes, see e.g. CA Patent Specification 1 172 813.
  • the object of the present invention is to provide an apparatus and a method for the production of ribbed pipes, by means of which the pipes can be provided with complete ribs and a smooth inner face.
  • the apparatus according to the invention is character ⁇ ized in that means are provided in an initial zone of the kernel between said mandrel and said end zone of the kernel for the heating of said initial zone, and that the diameter of the initial zone of the kernel increases slightly in the direction of motion of the material.
  • the initial zone of the kernel is heated and its diameter increases slightly towards the end zone.
  • the material unexpectedly fills all the grooves of the moulds reliably, and the inner face of the pipe becomes completely smooth.
  • the advantageous influence of the structure according to the invention might be due to the fact that after the grooves of the chill moulds have been filled by the action of the extrusion pressure within the area of the conical mandrel, the moulds begin to chill the material, which begins to contract.
  • the heating means can be positioned in one part of the initial zone only, but it is of advantage in view of the operation that the heating means of the initial zone extend over the whole length of the zone. For the same reason, it is desirable that the diameter of the initial zone increases essentially evenly.
  • the kernel in the present description means that part of the core which has an essentially constant diameter and by means of which the inner face of the pipe is calibrated. Therefore it is evident that the diameter cannot vary to any greater degree. Conse ⁇ quently, the kernel of known apparatuses has a constant diameter or the diameter decreases to some extent towards the terminal end so that a cooling, contracting pipe would not adhere thereto. For this reason, the diameter of the initial zone of the kernel according to the present invention increases only slightly in the production direction so that the diameter of the kernel at the end of the initial zone is 0,2 to 2,0 per cent, preferably about 1,0 per cent, larger than at the beginning of the initial zone.
  • the length of the initial zone in the axial direction of the apparatus is 10 to 100 per cent, preferably about 50 per cent, of the outer diameter of the pipe.
  • a suitable plastic repellent coating e.g. by a boric treatment, by the use of a lubricant, or by providing part of the kernel with a low spiral-shaped groove or grooves which prevent the material from sticking fast to the surface of the kernel.
  • the invention is also concerned with a method for the production of ribbed pipes having a smooth inner face, of a plastic material, wherein a material which is in a plasticized state is extruded into a ring-shaped moulding space which is defined between the end face of an extrusion sleeve, a core of the appara ⁇ tus, said core comprising a spindle, a conically enlarging mandrel and a kernel having a substantially constant diameter, and chill moulds which surround said extrusion sleeve and the core and move in the production direction of the apparatus and the inner surface of which is provided with grooves for the formation of the ribs; the material which has been moulded into a pipe being cooled by the chill moulds and an end zone of the kernel.
  • the method according to the invention is characterized in-that the inner face of the material being in the shape of a pipe is heated from the end zone, and that the diameter of the inner face of the pipe is increased slightly in the area of the initial zone.
  • Figure 1 is a general view of an apparatus for the production of ribbed pipes
  • FIG 2 is an enlarged longitudinal section of one detail of the apparatus.
  • the apparatus shown in Figure 1 comprises two chill moulds 1 and 2 which move along endless paths and which meet each other within the area of guide rails 3 to form a cylindrical mould.
  • An extrusion sleeve 4 connected to an extrusion head 6 of an extruder 5 extends into said mould. It is also shown in Figure 1 how a finished pipe 7 protrudes from the other end of the mould formed by the chill moulds .
  • a spindle 8 is positioned on the central line of the apparatus partially within the extrusion sleeve 4, which spindle 8 is straight, i.e. it has a constant diameter.
  • a conically enlarging mandrel 9 is positioned after the spindle so that it is wholly outside the extrusion sleeve, and a kernel 10 having an essentially constant diameter is positioned after the mandrel.
  • the spindle 8, the mandrel 9 and the kernel 10 together form the core of the apparatus.
  • the extrusion sleeve 4 and the spindle 8 define therebetween a ring nozzle 11 wherefrom the material to be moulded, e.g. a plastic substance, is fed into a moulding space 12 defined between the extrusion sleeve 4 , the chill moulds 1 , 2, the spindle 8 and the mandrel 9.
  • the innersurface of the chill moulds is provided with mutually spaced ring-shaped grooves 13 into which the plastic material is forced for the formation of the ribs.
  • the kernel 10 is formed by two successive parts: an initial zone 14 and an end zone 15. These zones are separated from each other by means of a peripheral groove 16 out of which a lubricant, e.g.
  • Cooling means 17 (shown schematically in the drawing) are provided within the end zone 15 for e.g. a liquid coolant.
  • the cooling means enable the surface of the end zone 15 and, consequently, the inner face of the pipe moulded of the material to be cooled so that the pipe 7 keeps its shape when removed from the manu ⁇ facturing apparatus.
  • the diameter of the end zone 15 is slightly reduced from the groove 16 onwards so that the diameter D.. is about 1 per cent larger than the diameter Dminister. So this tapering is very gentle, although it has been exaggerated in the drawing for the sake of clarity.
  • the initial zone 14 of the kernel which zone is positioned between the mandrel 9 and the groove 16, enlarges slightly towards the groove 16 and is provided with heating means.
  • the diameter of the initial zone 14 increases evenly from the diameter D_, which is the diameter of the initial zone adjacent the mandrel 9, to the dia ⁇ meter D, which is the diameter of the initial zone at the groove 16, so that the diameter D 4 is about 1 to 2 per cent larger than the diameter D 3 - Although this enlargement is very small it has proved to be of great importance in practice.
  • the initial zone is further provided with heating means extending over the whole length of the zone, which means are shown schematically in the drawing and indicated therein by the reference numeral 18.
  • the length of the initial zone is 10 to 100 per cent, preferably about 50 per cent, of the outer dia- meter of the pipe, and the length of the end zone 15 is 50 to 200 per cent of the outer diameter of the pipe.
  • the chill moulds 1 , 2 are provided with cooling means (not shown) for the cooling of the outer face of the pipe.
  • the apparatus shown in the drawing operates in the following way.
  • a pressurized material to be moulded. such as a plastic substance, is fed from the nozzle 11 between the extrusion sleeve 4 and the spindle 8 into the moulding space 12, in which it is forced outwards by the action of the conically enlarging mandrel 9 so that it fills the grooves 13 of the chill moulds and the space defined between the chill moulds and the core of the apparatus.
  • the material which has been forced into the grooves 13 forms the ribs of the pipe, and the material which remains between the chill moulds and the core forms the wall of the pipe.
  • the material When the material makes contact with the chill moulds 1, 2, it begins to cool, while those portions of the material which are positioned closest to the kernel are maintained in a plasticized state since the initial zone 14 of the kernel is heated by said means 18.
  • the material fills properly all the grooves 13 and becomes very homoge ⁇ neous in the area of the initial zone, on account of which the inner face of the pipe, too, becomes very smooth.
  • the pipe After the pipe has passed by the groove 16, it is began to be cooled also on the inside by means of the cooling means 17, whereby the material is stiffened to such an extent that it keeps its shape when it is removed from the apparatus.
  • the pipe is contracted during the cooling step, and the end zone of the kernel tapers slightly towards the end thereof in order to prevent the pipe from adhering to the kernel. For the same reason, a lubricant is fed out of the groove 16 on the surface of the end zone.
  • the heating means 18 may extend merely over a part of the length of the initial zone and the groove 16 can, of course, be left out if there is no need to feed a lubricant on the surface of the kernel. It is further to be noted that the inclination of the surface of the initial zone 14 has been exaggerated to some extent in the drawing for the sake of clarity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Forging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Materials For Medical Uses (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • External Artificial Organs (AREA)
PCT/FI1986/000072 1986-01-13 1986-07-03 Apparatus and method for the production of ribbed pipes WO1987004113A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8686904188T DE3678449D1 (de) 1986-01-13 1986-07-03 Apparat und methode fuer die produktion von rippen rohren.
AT86904188T ATE61968T1 (de) 1986-01-13 1986-07-03 Apparat und methode fuer die produktion von rippen rohren.
BR8607206A BR8607206A (pt) 1986-01-13 1986-07-03 Aparelho e processo para a producao de tubos alados
NO873748A NO873748L (no) 1986-01-13 1987-09-08 Apparat og fremgangsmaate for produksjon av ribberoer.
DK473087A DK164091C (da) 1986-01-13 1987-09-10 Apparat til fremstilling af ribberoer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI860135 1986-01-13
FI860135A FI74654C (fi) 1986-01-13 1986-01-13 Anordning och foerfarande foer framstaellning av kamflaensroer.

Publications (1)

Publication Number Publication Date
WO1987004113A1 true WO1987004113A1 (en) 1987-07-16

Family

ID=8521952

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1986/000072 WO1987004113A1 (en) 1986-01-13 1986-07-03 Apparatus and method for the production of ribbed pipes

Country Status (16)

Country Link
US (1) US4867928A (US20050065096A1-20050324-C00034.png)
EP (1) EP0290429B1 (US20050065096A1-20050324-C00034.png)
JP (1) JPS63503296A (US20050065096A1-20050324-C00034.png)
CN (1) CN1006970B (US20050065096A1-20050324-C00034.png)
AT (1) ATE61968T1 (US20050065096A1-20050324-C00034.png)
AU (1) AU591693B2 (US20050065096A1-20050324-C00034.png)
BR (1) BR8607206A (US20050065096A1-20050324-C00034.png)
CA (1) CA1275773C (US20050065096A1-20050324-C00034.png)
DE (2) DE3678449D1 (US20050065096A1-20050324-C00034.png)
DK (1) DK164091C (US20050065096A1-20050324-C00034.png)
FI (1) FI74654C (US20050065096A1-20050324-C00034.png)
HU (1) HU206468B (US20050065096A1-20050324-C00034.png)
NL (1) NL8601946A (US20050065096A1-20050324-C00034.png)
NO (1) NO873748L (US20050065096A1-20050324-C00034.png)
SU (1) SU1565342A3 (US20050065096A1-20050324-C00034.png)
WO (1) WO1987004113A1 (US20050065096A1-20050324-C00034.png)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301189A2 (de) * 1987-07-30 1989-02-01 Wilhelm Hegler Verfahren und Vorrichtung zum Herstellen eines Rippen-Rohres aus Kunststoff
GR890100425A (en) * 1988-07-05 1990-06-27 Uponor Nv A device for producing a grate construction and a grate construction
WO1991000797A1 (en) * 1989-07-12 1991-01-24 Uponor N.V. Apparatus for manufacturing ribbed pipes
WO1991006417A1 (en) * 1989-10-27 1991-05-16 Uponor N.V. Method and apparatus for manufacturing ribbed pipe
US5023029A (en) * 1988-09-16 1991-06-11 Lupke Manfred Arno Alfred Method and apparatus for producing pipe with annular ribs
EP0795389A1 (fr) * 1996-03-13 1997-09-17 Kabelwerk Eupen AG Câblerie d'Eupen SA Kabelfabriek Eupen NV Procédé et dispositif pour le refroidissement interne de tuyaux en matière plastique
EP3311977A1 (en) * 2016-10-18 2018-04-25 Canlar Boru Profil Plastik Elekt.Ins.Mak.Nak.San. Ve Tic.Ltd.Sti. Plastic pipe machine mandrel cooling and lubricating assembly

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006087A1 (en) * 1987-02-19 1988-08-25 Uponor N.V. A method and an apparatus for the production of ribbed pipes
DE3737588C3 (de) * 1987-11-05 1993-12-23 Corma Inc Verfahren zum Herstellen eines innen glatten, außen gerippten Rohres aus extrudierbarem Kunststoff sowie Vorrichtung zur Durchführung des Verfahrens
FI83187C (fi) * 1989-10-27 1991-06-10 Uponor Nv Produktionslinje foer sloeta plastroer.
DE4111229A1 (de) * 1991-04-08 1992-10-15 Wilhelm Hegler Vorrichtung zur herstellung von kunststoff-rohren
FI98137C (fi) * 1992-03-30 1997-04-25 Uponor Bv Menetelmä ja laite muoviputken orientoimiseksi sekä menetelmällä aikaansaatu orientoitu ripalaippamuoviputki
US20060202452A1 (en) * 1994-05-23 2006-09-14 Automotive Technologies International, Inc. Side curtain and multi-compartment vehicular airbags
EP0918617A1 (de) * 1996-07-23 1999-06-02 C.A. Greiner & Söhne Gesellschaft M.B.H. Behandlungsvorrichtung für eine schmelze aus einem plastifizierten kunststoff
DE19724857C1 (de) * 1997-06-12 1998-07-16 Unicor Rohrsysteme Gmbh Verfahren und Vorrichtung zur Herstellung von Kunststoff-Wellrohren
DE29813235U1 (de) 1998-03-09 1998-12-03 Lupke, Manfred Arno Alfred, Concord, Ontario Vorrichtung zum Formen von Kunststoffrohren
DE19947434B4 (de) * 1999-08-19 2011-02-24 Unicor Gmbh Vorrichtung und Verfahren zum Herstellen von Kunststoff-Wellrohren
JP2005164031A (ja) * 2003-11-11 2005-06-23 Nippon Techno:Kk 可撓性排水管
CA2588058C (en) * 2007-05-08 2014-07-15 Stefan A. Lupke Alignable cooling plug for extruder
LT2586602T (lt) * 2010-06-28 2018-12-27 Obschestvo S Ogranichennoy Otvetstvennostiyu "Smit-Yartsevo" Termoizoliacinio lankstaus vamzdžio gamybos būdas
RU2450926C1 (ru) * 2010-06-28 2012-05-20 Общество С Ограниченной Ответственностью "Смит-Ярцево" Способ изготовления теплоизолированной гибкой трубы
CN102430807B (zh) * 2011-10-11 2013-09-25 舟山春蕾锯业有限公司 衬有钢骨的锯架及其制造方法
CN103752955A (zh) * 2013-12-15 2014-04-30 四川惊雷科技股份有限公司 三维肋管加工机床

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB937332A (en) * 1961-02-17 1963-09-18 Huels Chemische Werke Ag A process for the continuous production of corrugated flexible tubes from thermoplasts by extrusion from a tubular die
SE415157B (sv) * 1974-04-17 1980-09-15 Nordstroem Erik G W Sett och anordning for tillverkning av kamflensror av plast
DE2362444C2 (de) * 1973-12-15 1983-06-01 Reifenhäuser KG, 5210 Troisdorf Vorrichtung zum Herstellen eines Rohres aus thermoplastischem Kunststoff mit Außenrippen und glattem Innenkanal
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EP0301189A2 (de) * 1987-07-30 1989-02-01 Wilhelm Hegler Verfahren und Vorrichtung zum Herstellen eines Rippen-Rohres aus Kunststoff
EP0301189A3 (en) * 1987-07-30 1990-09-05 Wilhelm Hegler Method and apparatus for manufacturing a ribbed plastic pipe
GR890100425A (en) * 1988-07-05 1990-06-27 Uponor Nv A device for producing a grate construction and a grate construction
US5023029A (en) * 1988-09-16 1991-06-11 Lupke Manfred Arno Alfred Method and apparatus for producing pipe with annular ribs
WO1991000797A1 (en) * 1989-07-12 1991-01-24 Uponor N.V. Apparatus for manufacturing ribbed pipes
US5340299A (en) * 1989-07-12 1994-08-23 Uponor, N.V. Apparatus for manufacturing ribbed pipes
WO1991006417A1 (en) * 1989-10-27 1991-05-16 Uponor N.V. Method and apparatus for manufacturing ribbed pipe
US5139730A (en) * 1989-10-27 1992-08-18 Uponor N.V. Method and apparatus for manufacturing ribbed pipe
EP0795389A1 (fr) * 1996-03-13 1997-09-17 Kabelwerk Eupen AG Câblerie d'Eupen SA Kabelfabriek Eupen NV Procédé et dispositif pour le refroidissement interne de tuyaux en matière plastique
BE1010116A3 (fr) * 1996-03-13 1998-01-06 Eupen Kabelwerk Procede et dispositif pour le refroidissement interne de tuyaux en matiere plastique.
EP3311977A1 (en) * 2016-10-18 2018-04-25 Canlar Boru Profil Plastik Elekt.Ins.Mak.Nak.San. Ve Tic.Ltd.Sti. Plastic pipe machine mandrel cooling and lubricating assembly

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HU206468B (en) 1992-11-30
DE3622775C2 (US20050065096A1-20050324-C00034.png) 1990-10-11
DE3622775A1 (de) 1987-07-16
ATE61968T1 (de) 1991-04-15
DK164091B (da) 1992-05-11
NO873748D0 (no) 1987-09-08
DK164091C (da) 1992-10-12
CA1275773C (en) 1990-11-06
JPH0568340B2 (US20050065096A1-20050324-C00034.png) 1993-09-28
EP0290429A1 (en) 1988-11-17
FI74654B (fi) 1987-11-30
AU6134386A (en) 1987-07-28
BR8607206A (pt) 1988-12-06
FI860135A0 (fi) 1986-01-13
NL8601946A (nl) 1987-08-03
CN1006970B (zh) 1990-02-28
DE3678449D1 (de) 1991-05-02
EP0290429B1 (en) 1991-03-27
DK473087D0 (da) 1987-09-10
AU591693B2 (en) 1989-12-14
FI860135A (fi) 1987-07-14
NO873748L (no) 1987-09-08
US4867928A (en) 1989-09-19
SU1565342A3 (ru) 1990-05-15
CN87100116A (zh) 1987-08-12
FI74654C (fi) 1988-03-10
JPS63503296A (ja) 1988-12-02
DK473087A (da) 1987-09-10

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