EP1470355A1 - Leitungsrohr für den transport von kraftfahrzeugflüssigkeiten, das eine innere glatte leitung und eine äussere gewellte leitung enthält - Google Patents

Leitungsrohr für den transport von kraftfahrzeugflüssigkeiten, das eine innere glatte leitung und eine äussere gewellte leitung enthält

Info

Publication number
EP1470355A1
EP1470355A1 EP20030712276 EP03712276A EP1470355A1 EP 1470355 A1 EP1470355 A1 EP 1470355A1 EP 20030712276 EP20030712276 EP 20030712276 EP 03712276 A EP03712276 A EP 03712276A EP 1470355 A1 EP1470355 A1 EP 1470355A1
Authority
EP
European Patent Office
Prior art keywords
tube
inner tube
pipe
annellated
smooth inner
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.)
Ceased
Application number
EP20030712276
Other languages
English (en)
French (fr)
Inventor
Cyrielle Cheng
Pierre Milhas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nobel Plastiques SA
Original Assignee
Nobel Plastiques SA
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 Nobel Plastiques SA filed Critical Nobel Plastiques SA
Publication of EP1470355A1 publication Critical patent/EP1470355A1/de
Ceased legal-status Critical Current

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
    • F16L11/04—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

Definitions

  • Automotive fluid transport hose comprising a smooth inner tube and a corrugated outer tube
  • the present invention relates to a pipe for transporting automotive fluids such as coolant, fuel, windshield washer fluid, etc.
  • a pipe for transporting automotive fluids comprising a smooth inner tube based on an elastomeric thermoplastic material, an outer corrugated tube which is in contact with the inner tube through the inner top of its waves and which is made of a thermoplastic material based on polyamide, and means for connecting the outer tube to the inner tube.
  • the pipe thus obtained is particularly well suited to the transport of automotive fluids and has a good ability to be shaped, in particular by elastic deformation.
  • This pipe is also simple and inexpensive to produce.
  • the elastomeric thermoplastic material used for the inner tube also allows easy creation of resistant connections with 'the organs to which the hose is connected, for example by means of nipples integral with the bodies and force-fitted in the inner tube.
  • the tubes are monolayers
  • the polyamide used is a poly- amide 12
  • the thermoplastic elastomer is a mixture of a polypropylene and an elastomer based on an ethylene propylene diene monomer.
  • This embodiment has very good characteristics for the transport of automotive fluids.
  • the pipe of the invention comprises an inner tube, generally designated at 1, and an outer tube, generally designated at 2, surrounding the inner tube 1.
  • the inner tube 1 is a smooth tube here having a single-layer structure of an elastomeric thermoplastic material.
  • the elastomeric thermoplastic material used is a mixture of a polypropylene and a rubber based on an ethylene propylene diene monomer (EPDM) such as one of those produced under the reference SANTOPRENE by the company ADVANCED ELASTOMER SYSTEMS.
  • EPDM ethylene propylene diene monomer
  • the outer tube 2 is a corrugated tube forming waves having an inner vertex 3 of inner diameter equal to or very substantially close to the outer diameter of the inner tube 1.
  • the tubes 1 and 2 are connected either at each vertex 3 by gluing or by adhesion for example during a coextrusion process either, if the pipe is of determined length, at the location of its ends by simple mechanical stop of the tube ex- térieur 2 against a flange of the inner tube 1 with or without bonding the ends of the tubes 1 and 2 to each other.
  • materials are chosen which are capable of adhering or of being bonded to each other.
  • the outer tube 2 here has a monolayer structure of polyamide and preferably of polyamide 12.
  • the materials used can be recycled materials originating, for example, from the grinding of scrap tubes, which causes less pollution and generates economic gain.
  • the pipe is obtained here by means of a known machine which comprises an extrusion head making it possible to produce, through a first channel, a parison which is pressed under the effect of an external suction against articulated molds surrounding the head of extrusion and moving parallel to the axis thereof.
  • a second extrusion channel allows, downstream of the parison extrusion, to fill the corrugated tube formed by the parison inside the molds with an internal smooth tube, which makes it possible to produce the pipe of the invention .
  • This neutral gas, air, nitrogen or any other suitable gas may be kept under pressure inside the waves of the corrugated tube, this pressure being able to constitute an insulating element fighting against the migration of the vapors of 1 inside or outside through the pipe wall.
  • connection of the two tubes will be sealed and preferably at each interior vertex of the corrugated tube.
  • the inner tube may include an internal conductive layer to allow the evacuation of the electrostatic charges generated by the friction of the fluid transported along the pipe. This limits the risk of explosion when the transported fluid is flammable.
  • the material of the tube 1 will be chosen as a function of its chemical resistance and its permeability to the fluid conveyed, while the material of the tube " 2 will be chosen mainly for its characteristics of resistance to the external atmosphere, chemical resistance and mechanical and corrosion resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
EP20030712276 2002-01-31 2003-01-22 Leitungsrohr für den transport von kraftfahrzeugflüssigkeiten, das eine innere glatte leitung und eine äussere gewellte leitung enthält Ceased EP1470355A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0201135A FR2835307B1 (fr) 2002-01-31 2002-01-31 Tuyau de transport de fluides automobiles, comportant un tube interieur et un tube exterieur annele
FR0201135 2002-01-31
PCT/FR2003/000208 WO2003064911A1 (fr) 2002-01-31 2003-01-22 Tuyau de transport de fluides automobiles, comportant un tube interieur lisse et un tube exterieur annele

Publications (1)

Publication Number Publication Date
EP1470355A1 true EP1470355A1 (de) 2004-10-27

Family

ID=27619769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030712276 Ceased EP1470355A1 (de) 2002-01-31 2003-01-22 Leitungsrohr für den transport von kraftfahrzeugflüssigkeiten, das eine innere glatte leitung und eine äussere gewellte leitung enthält

Country Status (5)

Country Link
US (1) US20050103392A1 (de)
EP (1) EP1470355A1 (de)
FR (1) FR2835307B1 (de)
MX (1) MXPA04007368A (de)
WO (1) WO2003064911A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040226623A1 (en) * 1999-10-12 2004-11-18 Oem/Miller, A Division Of Holm Industries Dual wall co-extruded corrugated tubing
JP4120476B2 (ja) * 2003-05-27 2008-07-16 宇部興産株式会社 コルゲートチューブ
IT1401929B1 (it) * 2010-09-14 2013-08-28 Hutchinson Srl Tubo per il trasferimento di un fluido a porzione(i) corrugata(e) e suo procedimento di fabbricazione
US9662826B2 (en) 2013-08-12 2017-05-30 Prinsco, Inc. Coilable dual wall corrugated pipe and related method
DE102014210149A1 (de) * 2014-05-27 2015-12-03 Schlemmer Gmbh Schlaucheinrichtung zum Transportieren eines Fluids für ein Haushaltsgerät, Vorrichtung für ein Haushaltsgerät, Haushaltsgerät sowie Verfahren
CN106104129B (zh) * 2015-02-12 2019-04-09 丹迪德诺拉保罗 伸缩软管
DE102015002791A1 (de) * 2015-03-06 2016-09-08 Kottmann Technology Gmbh Flexibler Wellschlauch
CN112344109B (zh) * 2020-11-06 2022-08-19 贵州黔峰实业有限公司 一种改性聚丙烯平壁增强波纹管制备及其生产工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898941A (en) * 1956-10-10 1959-08-11 Davol Rubber Co Inhaler tube
US3330303A (en) * 1964-06-15 1967-07-11 Continental Oil Co Composite tubing structure
AT325299B (de) * 1967-02-27 1975-10-10 Hegler Wilhelm Vorrichtung zur herstellung von rohren aus thermoplastischem kunststoff
US4312383A (en) * 1980-04-21 1982-01-26 Dayco Corporation Hose construction and apparatus for and method of making same
JPS5844583U (ja) * 1981-09-18 1983-03-25 金尾　史朗 合成樹脂製コルゲ−ト二重管
US4967799A (en) * 1984-08-15 1990-11-06 Dayco Products, Inc. Plastic abrasion-resistant protective sleeve for hose and method of protecting hose
DE68904073T2 (de) * 1988-05-30 1993-05-19 Uponor Nv Rohr zur wiederbeschichtung von leitungen.
DE9402180U1 (de) * 1994-02-09 1994-04-07 Ems-Inventa AG, Zürich Kühlflüssigkeitsleitung
DE4432584C1 (de) * 1994-09-13 1996-02-29 Inventa Ag Polymerleitung
GB2300683B (en) * 1995-05-06 1999-10-20 Uponor Ltd Improvements in or relating to flexible pipes
US5727599A (en) * 1996-01-16 1998-03-17 Ford Motor Company Insulating sleeve for a fluid pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03064911A1 *

Also Published As

Publication number Publication date
US20050103392A1 (en) 2005-05-19
FR2835307A1 (fr) 2003-08-01
WO2003064911A1 (fr) 2003-08-07
MXPA04007368A (es) 2004-11-26
FR2835307B1 (fr) 2004-05-21

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