AT325299B - Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff - Google Patents

Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff

Info

Publication number
AT325299B
AT325299B AT188067A AT188067A AT325299B AT 325299 B AT325299 B AT 325299B AT 188067 A AT188067 A AT 188067A AT 188067 A AT188067 A AT 188067A AT 325299 B AT325299 B AT 325299B
Authority
AT
Austria
Prior art keywords
thermoplastic plastic
manufacturing tubes
tubes
manufacturing
thermoplastic
Prior art date
Application number
AT188067A
Other languages
English (en)
Original Assignee
Hegler Wilhelm
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 Hegler Wilhelm filed Critical Hegler Wilhelm
Priority to AT188067A priority Critical patent/AT325299B/de
Priority to US676430A priority patent/US3538209A/en
Priority to DE1968H0065317 priority patent/DE1704718B2/de
Priority to SE2130/68A priority patent/SE324653B/xx
Priority to NL686802302A priority patent/NL143165B/xx
Priority to CH237968A priority patent/CH486309A/de
Priority to GB8309/68A priority patent/GB1148277A/en
Priority to FI680467A priority patent/FI49261C/fi
Priority to DK72668AA priority patent/DK126574B/da
Priority to ES350914A priority patent/ES350914A1/es
Priority to NO697/68A priority patent/NO133697C/no
Priority to BE711283D priority patent/BE711283A/xx
Priority to FR1554523D priority patent/FR1554523A/fr
Priority to JP43012513A priority patent/JPS5120548B1/ja
Priority to US1933*[A priority patent/US3677676A/en
Application granted granted Critical
Publication of AT325299B publication Critical patent/AT325299B/de

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/22—Multi-channel 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
    • 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
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion dies
    • 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
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their 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
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/118—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having arrangements for particular purposes, e.g. electrically conducting
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29L2016/00—Articles with corrugations or pleats
    • 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
    • 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
    • B29L2023/18—Pleated or corrugated hoses
    • B29L2023/186—Pleated or corrugated hoses having a smooth internal wall
    • 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
    • B29L2024/00—Articles with hollow walls
    • 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
    • B29L2024/00—Articles with hollow walls
    • B29L2024/003—Articles with hollow walls comprising corrugated cores
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
    • B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes
AT188067A 1967-02-27 1967-02-27 Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff AT325299B (de)

Priority Applications (15)

Application Number Priority Date Filing Date Title
AT188067A AT325299B (de) 1967-02-27 1967-02-27 Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff
US676430A US3538209A (en) 1967-02-27 1967-10-19 Method of producing plastic tubing having a corrugated outer wall
DE1968H0065317 DE1704718B2 (de) 1967-02-27 1968-02-15 Vorrichtung zur herstellung von doppelwandigen kunststoffrohren mit ring- oder schraubenlinienfoermig gerillter aussenwand und glatter innenwand
NL686802302A NL143165B (nl) 1967-02-27 1968-02-19 Werkwijze voor het door extrusie vervaardigen van thermoplastische kunststofbuizen met een ring- of schroeflijnvormig geribde buitenwand, alsmede thermoplastische kunststofbuizen, verkregen onder toepassing van deze werkwijze.
CH237968A CH486309A (de) 1967-02-27 1968-02-19 Verfahren und Vorrichtung zur Herstellung von Kunststoffrohren mit ring- oder schraubenlinienförmig gerillter Aussenwand
SE2130/68A SE324653B (de) 1967-02-27 1968-02-19
GB8309/68A GB1148277A (en) 1967-02-27 1968-02-20 Plastics pipes and a method of and apparatus for producing same
FI680467A FI49261C (fi) 1967-02-27 1968-02-22 Menetelmä ja laite kaksikerroksisten tekoaineputkien valmistamiseksi, joissa on rengasmaisesti tai kierremäisesti uritettu ulkoseinä ja sile ä sisäseinä.
DK72668AA DK126574B (da) 1967-02-27 1968-02-23 Fremgangsmåde til fremstilling af formstofrør med ring- eller skruelinjeformet rillet ydervæg og glat indervæg og apparat til udøvelse af fremgangsmåden.
ES350914A ES350914A1 (es) 1967-02-27 1968-02-24 Procedimiento y dispositivo para la fabricacion de tubos deplastico con pared exterior ranurada en forma de anillos o espirales.
NO697/68A NO133697C (de) 1967-02-27 1968-02-26
BE711283D BE711283A (de) 1967-02-27 1968-02-26
FR1554523D FR1554523A (de) 1967-02-27 1968-02-26
JP43012513A JPS5120548B1 (de) 1967-02-27 1968-02-27
US1933*[A US3677676A (en) 1967-02-27 1970-05-11 Apparatus for forming plastic tubing having a smooth inner wall and a corrugated outer wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT188067A AT325299B (de) 1967-02-27 1967-02-27 Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff

Publications (1)

Publication Number Publication Date
AT325299B true AT325299B (de) 1975-10-10

Family

ID=3523008

Family Applications (1)

Application Number Title Priority Date Filing Date
AT188067A AT325299B (de) 1967-02-27 1967-02-27 Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff

Country Status (14)

Country Link
US (2) US3538209A (de)
JP (1) JPS5120548B1 (de)
AT (1) AT325299B (de)
BE (1) BE711283A (de)
CH (1) CH486309A (de)
DE (1) DE1704718B2 (de)
DK (1) DK126574B (de)
ES (1) ES350914A1 (de)
FI (1) FI49261C (de)
FR (1) FR1554523A (de)
GB (1) GB1148277A (de)
NL (1) NL143165B (de)
NO (1) NO133697C (de)
SE (1) SE324653B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2718537A1 (de) * 1976-04-26 1977-11-03 Kureha Chemical Ind Co Ltd Verfahren und vorrichtung zur herstellung von aus schichten aufgebauten rohrfoermigen gebilden aus synthetischen harzen

Families Citing this family (118)

* Cited by examiner, † Cited by third party
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DE2138437A1 (de) * 1971-07-31 1973-02-15 Wilhelm Hegler Vorrichtung zur herstellung von kunststoffrohren mit schraubenfoermig gewundener querwand
US3743456A (en) * 1971-08-20 1973-07-03 Acme Hamilton Mfg Corp Adjustable die heads for extruders and the like
US3792951A (en) * 1972-01-24 1974-02-19 Extrudyne Inc Apparatus for producing extruded hollow board
DE2619129C2 (de) * 1976-04-30 1982-04-15 Ziegelwerke Heinrich Oltmanns, 2905 Edewecht Aus einem extrudierten Schlauch hergestelltes gewelltes Rohr aus thermoplastischem Kunststoffmaterial
US3784346A (en) * 1972-06-12 1974-01-08 Plastic Tubing Converted corrugated pipe molding machine
DE2329473A1 (de) * 1972-06-13 1974-01-03 Nordstroem Erik G W Verfahren zur anordnung von durch die rohrwandung gewellter kunststoffrohre hindurchgehenden loechern und vorrichtung fuer durchfuehrung des verfahrens
BE795687A (fr) * 1972-06-26 1973-06-18 Sudo Michio Procede et appareil pour la fabrication d'un film cylindrique aplati se composant de couches de resine thermoplastique, etirees transversalement
US4017229A (en) * 1972-06-26 1977-04-12 Michio Sudo Apparatus for uniting concentrically extruded tubular films of thermoplastic synthetic resin
CA978487A (en) * 1972-07-03 1975-11-25 Donald L. Kleykamp Hose construction and apparatus and method for making same
US3876740A (en) * 1972-10-27 1975-04-08 Standard Oil Co Process for improving interior surface smoothness and gloss in foamed tubular extrudates by the use of extrusion die faces of novel geometry
US3804574A (en) * 1972-12-07 1974-04-16 C Gatto Apparatus for sizing shaped articles
US3844700A (en) * 1973-02-06 1974-10-29 Beloit Corp Method and apparatus for forming continuous thermoplastic pipe having corrugated segments
US4353859A (en) * 1973-08-01 1982-10-12 Sherwin Palmer Method for making fittings and couplings
US3981663A (en) * 1973-09-10 1976-09-21 Lupke Gerd Paul Heinrich Apparatus for making high speed corrugated plastic tubing
SE381001B (sv) * 1973-10-22 1975-11-24 Erik G W Nordstroem Forfarande och anordning for framstellning av kamflensror av plast
US3994646A (en) * 1974-01-25 1976-11-30 Frankische Isolierrohr-Und Metallwaren Werke Gebr. Kirchner Apparatus for producing double-walled tubes of plastic material
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FR70398E (fr) * 1974-03-22 1959-04-06 Electronique & Physique Perfectionnements aux dispositifs de prise de vues de télévision et cinématographie
JPS50158659A (de) * 1974-06-14 1975-12-22
US4184831A (en) * 1974-06-20 1980-01-22 Hegler Ralph Peter Apparatus for producing plastic drain pipes
US3963403A (en) * 1974-12-13 1976-06-15 Hughes Processing, Inc. Apparatus for making foam plastic pipe
DE2519705C2 (de) * 1975-05-02 1982-03-18 MFC Maschinenfabrik Chur AG, Chur Vorrichtung zum Strangpressen von Rohren
DE2605546C3 (de) * 1976-02-10 1986-03-27 Battenfeld Maschinenfabriken Gmbh, 5882 Meinerzhagen Blasform zur Herstellung von Faltenbälgen aus Kunststoff
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US4312383A (en) * 1980-04-21 1982-01-26 Dayco Corporation Hose construction and apparatus for and method of making same
DE3029545A1 (de) * 1980-08-04 1982-03-11 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Biegbares waermeisoliertes leitungsrohr
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JPS5844583U (ja) * 1981-09-18 1983-03-25 金尾　史朗 合成樹脂製コルゲ−ト二重管
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CA1187258A (en) * 1982-12-02 1985-05-21 Lupke, Manfred A. A. Method and apparatus for forming a double walled thermoplastic tube with integral bells
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US4500284A (en) * 1983-09-16 1985-02-19 Lupke Manfred Arno Alfred Forming single wall bells in double wall pipe
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DE3513708C2 (de) * 1985-04-12 1994-04-21 Drossbach Gmbh & Co Kg Extrusionskopf zur Herstellung doppelwandiger Kunststoffrohre mit zylindrischem Innenrohr und quergewelltem Außenrohr
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DE3426680A1 (de) * 1984-07-19 1986-01-23 Fränkische Rohrwerke Gebrüder Kirchner GmbH & Co, 8729 Königsberg Vorrichtung zum herstellen von kunststoffschlaeuchen
SE446954B (sv) * 1985-03-12 1986-10-20 Uponor Ab Sett vid extrudering av ett dubbelveggigt plastror samt extruderingsverktyg for utovning av settet
US4770618A (en) * 1986-01-15 1988-09-13 Lupke Manfred Arno Alfred Extrusion die for two-ply plastic tubing
US4936768A (en) * 1986-03-25 1990-06-26 Lupke Manfred Arno Alfred Extrusion die for externally ribbed plastic tubing
US4712993A (en) * 1986-03-25 1987-12-15 Lupke Manfred Arno Alfred Extrusion die for externally ribbed plastic tubing
DE3701822A1 (de) * 1987-01-22 1988-08-11 Uponor Nv Verfahren und anordnung zum strangpressen von kunststoffrohren
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DE3744510A1 (de) * 1987-12-30 1989-07-13 Wilhelm Hegler Rohrverbindungs-element
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US3677676A (en) 1972-07-18
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FR1554523A (de) 1969-01-17
CH486309A (de) 1970-02-28
FI49261C (fi) 1975-05-12
US3538209A (en) 1970-11-03
NL143165B (nl) 1974-09-16
NO133697B (de) 1976-03-08
SE324653B (de) 1970-06-08
ES350914A1 (es) 1969-12-01
GB1148277A (en) 1969-04-10
NO133697C (de) 1976-06-16
NL6802302A (de) 1968-08-28
FI49261B (de) 1975-01-31
DE1704718A1 (de) 1971-07-29
JPS5120548B1 (de) 1976-06-25

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