Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
• • 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
  • F16L9/00—Rigid pipes
  • F16L9/12—Rigid pipes of plastics with or without reinforcement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
  • B60K15/01—Arrangement of fuel conduits
  • B60K15/013—Arrangement of fuel conduits of gas conduits
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
  • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
  • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
  • Y10T428/1393—Multilayer [continuous layer]

Definitions

• Ultra-layer plastic tube for fluids used in motor vehicles Ultra-layer plastic tube for fluids used in motor vehicles.
• the present invention relates to a multilayer plastic tube for transporting fluids in a motor vehicle, mainly fuel. 5
• the replacement of metal pipes by plastic pipes in motor vehicles is becoming generalized for obvious reasons of weight gain resulting in fuel consumption gains and consequently a reduction in atmospheric pollution.
• thermoplastic materials currently on the market offer a wide range of properties, but no material has all the qualities required for transporting a fuel. Thus, some of them have excellent barrier properties, but poor mechanical properties or resistance to ignition. Others, on the contrary, are mechanically satisfactory, but tend either to dissolve in the fuel or to be permeable to it, which leads to another atmospheric pollution. Others are also difficult to lend to the forming operations which a pipe must be able to undergo in order to be used in a motor vehicle. 5
• an arsenal of normative texts are set up with regard to pollution and safety in relation to motor vehicles, which set draconian objectives to be achieved in the coming years and thus stimulate intense research activity, notably in the field of fuel lines.
• the subject of the invention is a pipe made of multilayer thermoplastic material, the composition of which is, from the inside to the outside:
• HDPE high density polyethylene
• the multilayer tube comprises four successive layers, denoted respectively 11, 12, 13, 14 from 1 interior to 1 exterior of said tube.
• the inner layer 11 of polyamide has good compatibility with hydrocarbons (absence of chemical reaction or dissolution) and also constitutes a good quality barrier to the components contained in a fuel, and it also forms a mechanical reinforcement for the tube.
• Layer 12 of polyethylene-maleic anhydride copolymer is mainly used for its bonding properties allowing the polyamide to adhere intimately with the layer of high density polyethylene (HDPE) which forms the third layer 13.
• This third layer 13 gives the tube 10 an effective barrier property to the alcohols contained in the fuel while also strengthening the mechanical strength of the said tube.
• This layer consists of polyester-ether copolymer with elastomeric properties.
• This layer forms a protection for the tube 10 against the occasional fluids with which it can be brought into contact (oil, water loaded with various salts, especially in winter, etc.) and it provides protection against shocks and withstands stress well. bending and bending fatigue that the tube can undergo, thanks to its elastomeric nature. In addition, this last layer is resistant to injury and abrasion.
• a possible material for the outer layer 14 is placed on the market under the trade name of ARNITEL (registered trademark of the company DMS).
• a multilayer tube is thus obtained which satisfies the EURO 2000 regulation with a minimum weight of material.
• the materials used are relatively inexpensive, which allows economical manufacture of the tube.
• these materials lend themselves to manufacturing either by coextrusion of the four layers 11, 12, 13, 14, or by coextrusion of the three internal layers 11, 12, 13 and subsequent application of an elastomeric coating on the coextruded assembly.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Laminated Bodies (AREA)

Priority Applications (10)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8853507

Family Applications (1)

Country Status (13)

Cited By (2)

Families Citing this family (8)

Citations (4)

Family Cites Families (10)

• 2000
  • 2000-08-11 FR FR0010588A patent/FR2812929B1/fr not_active Expired - Fee Related
• 2001
  • 2001-08-03 EP EP01960866A patent/EP1309812B1/fr not_active Expired - Lifetime
  • 2001-08-03 CA CA002418818A patent/CA2418818A1/fr not_active Abandoned
  • 2001-08-03 DE DE60134475T patent/DE60134475D1/de not_active Expired - Fee Related
  • 2001-08-03 AT AT01960866T patent/ATE398745T1/de not_active IP Right Cessation
  • 2001-08-03 RO ROA200300087A patent/RO121349B1/ro unknown
  • 2001-08-03 JP JP2002519825A patent/JP2004506859A/ja active Pending
  • 2001-08-03 MX MXPA03000936A patent/MXPA03000936A/es not_active Application Discontinuation
  • 2001-08-03 PL PL01365079A patent/PL365079A1/xx unknown
  • 2001-08-03 BR BR0113123-0A patent/BR0113123A/pt not_active Application Discontinuation
  • 2001-08-03 AU AU2001282262A patent/AU2001282262A1/en not_active Abandoned
  • 2001-08-03 WO PCT/FR2001/002539 patent/WO2002014727A1/fr not_active Ceased
  • 2001-08-03 US US10/333,062 patent/US20040013835A1/en not_active Abandoned

Patent Citations (4)

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