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WO2008061588A1 - Agencement de ligne dans un récipient en matière plastique - Google Patents

Agencement de ligne dans un récipient en matière plastique Download PDF

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Publication number
WO2008061588A1
WO2008061588A1 PCT/EP2007/008450 EP2007008450W WO2008061588A1 WO 2008061588 A1 WO2008061588 A1 WO 2008061588A1 EP 2007008450 W EP2007008450 W EP 2007008450W WO 2008061588 A1 WO2008061588 A1 WO 2008061588A1
Authority
WO
WIPO (PCT)
Prior art keywords
line
container
hollow body
layer
inside wall
Prior art date
Application number
PCT/EP2007/008450
Other languages
English (en)
Inventor
Dirk Eulitz
Timo Krämer
Harald Lorenz
Matthias Borchert
Gerd Wolter
Original Assignee
Kautex Textron Gmbh & Co. Kg
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
Priority claimed from DE102006055117A external-priority patent/DE102006055117A1/de
Application filed by Kautex Textron Gmbh & Co. Kg filed Critical Kautex Textron Gmbh & Co. Kg
Priority to EP07818533A priority Critical patent/EP2084074A1/fr
Priority to JP2009536617A priority patent/JP5184546B2/ja
Publication of WO2008061588A1 publication Critical patent/WO2008061588A1/fr

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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • 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
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • 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
    • B29D22/00—Producing hollow articles
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B60K15/03—Fuel tanks
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2008—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements inside the 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4881—Moulds characterised by mould configurations having a mandrel or core e.g. two mould halves with a core in-between
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06905—Using combined techniques for making the preform
    • B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06905—Using combined techniques for making the preform
    • B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
    • B29C49/06914—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets using parallel sheets as a preform
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5227—Joining tubular articles for forming multi-tubular articles by longitudinally joining elementary tubular articles wall-to-wall (e.g. joining the wall of a first tubular article to the wall of a second tubular article) or for forming multilayer tubular 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • 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
    • B29L2009/00—Layered products
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Definitions

  • the invention concerns a line arrangement in a plastic container. It is known for lines and conduits which are to be stationarily laid in plastic containers to be fixed to the inside wall of the plastic container by means of clips. It is also known for snap-action receiving means for lines and conduits to be provided, which are formed in one piece, at the inside wall of the container.
  • plastic containers and plastic hollow bodies are produced by extrusion blow molding. In that procedure a tubular preform is extruded from an extrusion head and expanded by means of an internal increased pressure in a multi-part tool forming a mold cavity.
  • a tubular preform is extruded from an extrusion head and expanded by means of an internal increased pressure in a multi-part tool forming a mold cavity.
  • installation fitments which are joined together for example by means of lines and conduits. Lines and conduits for taking off fluids or for introducing fluids are also frequently to be arranged in such containers. That applies for example to fuel tanks for motor vehicles, in which venting conduits, air intake conduits, fuel conveyor lines and electric lines are to be arranged.
  • the position of the lines is determined in many cases by the position of functional components in the container. Fixing of the lines can be effected for example directly by way of the fixing of functional components in the container. In the production of fuel tanks it is known for example for certain functional components such as for example valves to be fixed through cut-out openings in the container wall. An expensive and complicated sealing means is required at those locations in the container. In general the operation of mounting the lines in place is effected by hand through a central aperture in the container.
  • the arrangement of lines and conduits in the container is simpler insofar as they can be positioned and fixed prior to final assembly to constitute the closed container.
  • lines and conduits to be fixed at various locations in the container by means of holding clips provided for that purpose.
  • the inside wall of the container can also be provided with snap-action receiving means of a slightly undercut configuration, for the lines and conduits to be pressed thereinto.
  • the operation of fitting the lines in position can be effected during manufacture of the hollow body but also after it has been finished by hand through a maintenance opening in the container or through a large removal opening in the container.
  • the object of the present invention is to avoid the above- described disadvantages of the state of the art.
  • That object is attained by a hollow body of plastic material having at least one line which is stationarily laid in its interior, which is distinguished in that the line is at least region-wise joined in material bonded relationship to the inside wall of the hollow body.
  • the hollow body is desirably in the form of an extrusion blow molded container, wherein the line laid therein was produced in a separate working operation.
  • the hollow body can be in the form of an extrusion blow molded fuel tank.
  • the line is welded to the inside wall of the container.
  • the welding can be effected over the entire length of the line or however also only in portion-wise fashion.
  • the line is of a multi-layer structure, wherein the outer layer of the line comprises a plastic material which is compatible with the inner layer of the container, in such a way that the plastic material of the outside wall of the line and the plastic material of the inside wall of the container can be welded together.
  • the hollow body is in the form of an extrusion blow molded fuel tank
  • the wall thereof is in the form of a multi-layer co- extrudate of plastic material with barrier layers of EVOH (ethylene vinyl alcohol).
  • the outer layer of the container generally comprises a carbon black-filled polyethylene.
  • the inner layer of the fuel tank comprises a pure polyethylene.
  • the barrier layer is respectively embedded in bonding agent layers. At least one layer of recycled material ('regrind') is provided between the outer layer of the container and the barrier layer or the bonding agent layer in question.
  • valves, valve bodies, gas-carrying lines and conduits and the like are usually not made from polyolefins or polyethylene as that material swells or is not resistant in respect of shape, in the presence of fuel. Welding such parts in the production of the fuel tank is therefore not readily possible.
  • the line is co-extruded in a multi-layer configuration, wherein the sheath layer of the line is adapted for welding to the inside wall of the container.
  • a core layer of the line can comprise for example a plastic material which is resistant in relation to hydrocarbons whereas the sheath layer comprises polyethylene.
  • That line can be co-extruded in a multi-layer configuration, with the layers concentrically surrounding each other. In that case the sheath layer can serve exclusively for fixing the line to the inside wall of the container.
  • the line can also be of such a configuration that it is only in region-wise or portion-wise manner that it has a sheath layer for welding to the inside wall of the container.
  • the sheath layer serves exclusively as a welding additive or welding aid.
  • the sheath layer can also serve as a casing layer for a plurality of line strands.
  • the sheath layer and the core layer of the line do not have to be connected together in material bonded relationship. If such a connection involving a material bonded relationship of the sheath layer and the core layer is wanted, that can be implemented by virtue of the above-indicated non-compatibility of the plastic materials, with the interposition of a bonding agent layer.
  • the invention further concerns a process for the production of a hollow body of plastic material with at least one line stationarily laid therein, wherein the hollow body is obtained by extrusion blow molding and the line is extruded in a separate working operation and the line is welded at least portion-wise to the container wall in or immediately after the operation of shaping the container.
  • the line can have been placed in the hollow body for example with functional components disposed thereon, during expansion of the hollow body in the tool, by means of a holder provided for that purpose.
  • the line with the components disposed thereon can have the plastic material blow molded therearound in per se known manner in the operation of shaping the hollow body.
  • the hollow body is produced in a multi-stage extrusion blow molding process, wherein a three- part blow molding mold with two outer molds and a central mold are advantageously used.
  • two preforms in web form are respectively extruded between an outer mold and the central mold.
  • the tool is closed.
  • the preforms are respectively applied against the outer molds which define parts of the mold cavity. That is effected in known manner by differential pressure, either by virtue of the outer molds being subjected to vacuum or by the molding being subjected to a gas pressure.
  • Component holders are arranged on the central mold, by way of which holders lines and functional components disposed thereon, if necessary, are pressed within the closed tool against the inside wall of the preform while still in a plastic condition. In that case the line can be welded to the inside wall of the container when it is not yet completely finished.
  • the central mold is then removed from between the outer molds. The outer molds are moved towards each other and pressed against each other in such a way that the two half-shell portions shaped therein are welded to constitute a closed container.
  • the container prefferably be produced from deep-drawn or injection molded half-shell portions. Then for example the lines can be fixed in the opened half-shell portions by means of suitable welding processes.
  • Figure 1 shows a diagrammatic cross-section through a hollow body according to the invention, which is in the form of an extrusion blow molded fuel tank,
  • Figure 2 shows a detail view of the detail II in Figure 1
  • FIG. 3 shows a section taken along lines III-III in Figure 2
  • Figure 4 shows a detail view of the detail IV in Figure 1
  • FIG. 5 shows a section taken along lines V-V in Figure 4,
  • FIG. 6 shows an alternative variant of the line arrangement according to the invention
  • FIG. 7 shows a further variant of the line arrangement according to the invention
  • Figure 8 shows an advantageous configuration of the line arrangement according to the invention including a sheath layer and a plurality of core layers which in turn embrace a plurality of lines, and
  • Figure 9 shows a further variant of the line arrangement according to the invention.
  • FIG. 1 shows in a diagrammatic, highly simplified view an extrusion blow molded fuel tank 1 of thermoplastic material.
  • the fuel tank 1 in the illustrated embodiment was obtained by a multi-stage extrusion blow molding process, using a three-part blow molding tool comprising two outer molds and a central mold. In that operation two preforms in web form were respectively extruded between an outer mold and the central mold. After the tool was closed the preforms were respectively applied against the outer mold which define the parts of the mold cavity and expanded or shaped.
  • the fuel tank 1 comprises a co-extrudate which in total has six layers and which comprises thermoplastic material, wherein the layer structure from the outside inwardly comprises a carbon black-filled polyethylene layer, a recycled material layer, a bonding agent layer, an EVOH layer, a further bonding agent layer and a layer of pure polyethylene (virgin PE).
  • a fuel tank 1 Arranged in the fuel tank 1 are various functional components which are required for operation in a motor vehicle. They include the surge container identified by reference 2, with the fuel delivery pump (not shown) contained therein, and a fuel removal line 3 which is passed out of the fuel tank 1. Usually a fuel tank also has a filling opening and various venting openings which are connected to venting lines (not shown). Mention should be made here by way of example of an operational venting line and a refuelling venting line which are closable with corresponding valves. The valves involved are for example roll-over valves (roll-over safeguard) and refuelling venting valves. The latter ensure closure of the refuelling venting line when a given filling level is reached. The rise in pressure in the fuel tank causes the refuelling gun valve to be switched off in the refuelling operation.
  • the embodiment illustrated in Figure 1 shows in one Figure two possible variants of the manner of fixing the fuel removal line 3.
  • the first variant is firstly described with reference to Figure 2 (detail II in Figure 1).
  • the fuel removal line 3 in the variant illustrated in Figure 2 is in the form, over its entire length, of a tube or line which is co-extruded in multi-layer configuration, wherein it includes a sheath layer 5 (outer layer) and a core layer 6 (inner layer) which do not necessarily have to be connected together in material bonded relationship.
  • the sheath layer 5 comprises pure PE whereas the core layer 6 can comprise any material.
  • the material used here is one which does not swell in the presence of hydrocarbons.
  • the sheath layer 5 in the form of a PE layer is compatible with the inside wall 4 of the fuel tank 1 in the sense of weldability thereof since, as already mentioned hereinbefore, the inside wall 4 of the fuel tank 1 also comprises pure polyethylene. It should be observed at this juncture that, if the inside wall of the container is of a different nature, it will be appreciated that the sheath layer of the line or conduit in question must also comprise a different material which is compatible with the inside wall of the fuel tank.
  • the line is in the form of a fuel removal line 3, that is to say it embraces a hollow space for fuel to pass therethrough.
  • the cuff portion 7 comprises a polyethylene which is weldable to the inside wall 4 of the fuel tank 1 and which like the sheath layer 5 shown in Figures 2 and 3 is welded in line form to the inside wall 4 of the fuel tank 1. So that the cuff portion 7 does not slip on the fuel removal line 3 upon fitment thereof in the fuel tank, it can either be of comparatively tight dimensions or it can be fixed to the fuel removal line 3 by means of a bonding agent.
  • Figure 6 shows a variant of the line arrangement according to the invention, in which two core pipes 6 are embraced by a common sheath pipe 5, wherein the sheath pipe 5 is welded to the inside wall 4 of the fuel tank 1, as in the case of the embodiment shown in Figures 2 and 3.
  • the variant illustrated in Figure 7 provides that the sheath pipe is of an asymmetrical configuration in cross-section so that in the installed position, on the side facing towards the inside wall 4 of the fuel tank 1, there is an enlarged base 8 having a comparatively large welding or joining surface area.
  • the line arrangement is of such a configuration that the core pipe 6 accommodates a line assembly 9.
  • the line assembly 9 can comprise a plurality of fuel lines or, as in the illustrated embodiment, a plurality of electric cables which in turn are provided with a sheathing.
  • Reference 10 denotes a filling which ensures a defined position for the lines within the line assembly 9.
  • FIG 9 shows a variant of the line arrangement according to the invention, in which the line is provided on one side with a bonding agent strip 11.
  • That bonding agent strip 11 can be for example a polyolefin which is weldable to the inside wall 4.
  • Both the bonding agent strip 11 and also the sheath layer 5 as well as the cuff portion 7 can be optimised in terms of their material nature and thickness in regard to the required thermal capacity for the purposes of weldability.
  • the line arrangement should be weldable to the inside wall 4 of the fuel tank 1 or another hollow body in manufacture thereof in the first heat. For that reason it is advantageous if the material provided for the welding operation has a thermal capacity which is as low as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

La présente invention concerne un corps creux en matière plastique, notamment un réservoir d'essence (1), obtenu par moulage par extrusion-soufflage, comportant au moins une ligne disposée de manière fixe à l'intérieur, ledit corps creux étant caractérisé en ce que la ligne est au moins en termes de zone assemblée en une relation de matière soudée à la paroi interne du corps creux.
PCT/EP2007/008450 2006-11-21 2007-09-28 Agencement de ligne dans un récipient en matière plastique WO2008061588A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07818533A EP2084074A1 (fr) 2006-11-21 2007-09-28 Agencement de ligne dans un récipient en matière plastique
JP2009536617A JP5184546B2 (ja) 2006-11-21 2007-09-28 プラスチック材料製中空体の製造法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102006055117A DE102006055117A1 (de) 2006-11-21 2006-11-21 Leitungsanordnung in einem Kunststoffbehälter
DE102006055117.6 2006-11-21
US89297307P 2007-03-05 2007-03-05
US60/892,973 2007-03-05

Publications (1)

Publication Number Publication Date
WO2008061588A1 true WO2008061588A1 (fr) 2008-05-29

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WO2009043660A2 (fr) * 2007-10-02 2009-04-09 Inergy Automotive Systems Research (Societe Anonyme) Procédé de fabrication d'un réservoir de carburant en matière plastique
WO2009149782A2 (fr) * 2008-06-11 2009-12-17 Kautex Textron Gmbh & Co. Kg Procédé de fabrication d'un réservoir à carburant pour véhicule automobile et réservoir à carburant pour véhicule automobile
WO2011110519A1 (fr) * 2010-03-09 2011-09-15 Inergy Automotive Systems Research (Société Anonyme) Procédé de fabrication d'un réservoir de carburant et son utilisation dans un véhicule hybride
FR2957296A1 (fr) * 2010-03-09 2011-09-16 Inergy Automotive Systems Res Procede pour fabriquer un reservoir a carburant et son utilisation dans un vehicule hybride
WO2014147013A1 (fr) * 2013-03-22 2014-09-25 Kautex Textron Gmbh & Co. Kg Réservoir de fluide de travail

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EP0855542A2 (fr) * 1997-01-22 1998-07-29 Hans Grohe GmbH & Co. KG Procédé pour la fabrication de corps creux et un corps creux
EP1006014A2 (fr) * 1998-12-01 2000-06-07 Mannesmann VDO Aktiengesellschaft Réservoir de carburant et méthode de fixation des conduits dans un réservoir de carburant
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009043660A2 (fr) * 2007-10-02 2009-04-09 Inergy Automotive Systems Research (Societe Anonyme) Procédé de fabrication d'un réservoir de carburant en matière plastique
WO2009043660A3 (fr) * 2007-10-02 2009-05-28 Inergy Automotive Systems Res Procédé de fabrication d'un réservoir de carburant en matière plastique
US8372331B2 (en) 2007-10-02 2013-02-12 Inergy Automotive Systems Research (S.A.) Process for manufacturing a plastic fuel tank
DE102008027823B3 (de) * 2008-06-11 2010-02-11 Kautex Textron Gmbh & Co. Kg Verfahren zur Herstellung eines Kraftstoffbehälters für Kfz sowie Kraftstoffbehälter für Kfz
WO2009149782A3 (fr) * 2008-06-11 2010-10-14 Kautex Textron Gmbh & Co. Kg Procédé de fabrication d'un réservoir à carburant pour véhicule automobile et réservoir à carburant pour véhicule automobile
JP2011524271A (ja) * 2008-06-11 2011-09-01 コーテックス テクストロン ジーエムビーエイチ アンド シーオー ケージー 自動車用の燃料容器および自動車用の燃料容器の生産方法
US8276778B2 (en) 2008-06-11 2012-10-02 Kautex Textron Gmbh & Co. Kg Fuel container for motor vehicles
WO2009149782A2 (fr) * 2008-06-11 2009-12-17 Kautex Textron Gmbh & Co. Kg Procédé de fabrication d'un réservoir à carburant pour véhicule automobile et réservoir à carburant pour véhicule automobile
US8590132B2 (en) 2008-06-11 2013-11-26 Kautex Textron Gmbh & Co. Kg Method for producing a fuel container for motor vehicles and fuel container for motor vehicles
WO2011110519A1 (fr) * 2010-03-09 2011-09-15 Inergy Automotive Systems Research (Société Anonyme) Procédé de fabrication d'un réservoir de carburant et son utilisation dans un véhicule hybride
FR2957296A1 (fr) * 2010-03-09 2011-09-16 Inergy Automotive Systems Res Procede pour fabriquer un reservoir a carburant et son utilisation dans un vehicule hybride
US8967418B2 (en) 2010-03-09 2015-03-03 Inergy Automotive Systems Research S.A. Process for manufacturing a fuel tank and use thereof in a hybrid vehicle
WO2014147013A1 (fr) * 2013-03-22 2014-09-25 Kautex Textron Gmbh & Co. Kg Réservoir de fluide de travail
CN105050846A (zh) * 2013-03-22 2015-11-11 考特克斯·特克斯罗恩有限公司及两合公司 工作液箱
US10011168B2 (en) 2013-03-22 2018-07-03 Kautex Textron Gmbh & Co. Kg Operating fluid tank

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JP5184546B2 (ja) 2013-04-17
JP2010510136A (ja) 2010-04-02
EP2084074A1 (fr) 2009-08-05

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