EP2442961A2 - Procédé de fabrication d'un élément moulé et élément moulé fabriqué de la sorte - Google Patents

Procédé de fabrication d'un élément moulé et élément moulé fabriqué de la sorte

Info

Publication number
EP2442961A2
EP2442961A2 EP10724321A EP10724321A EP2442961A2 EP 2442961 A2 EP2442961 A2 EP 2442961A2 EP 10724321 A EP10724321 A EP 10724321A EP 10724321 A EP10724321 A EP 10724321A EP 2442961 A2 EP2442961 A2 EP 2442961A2
Authority
EP
European Patent Office
Prior art keywords
polyethylene
wall
molded part
hollow body
layer
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.)
Withdrawn
Application number
EP10724321A
Other languages
German (de)
English (en)
Inventor
Dragan Griebel
Volker BÖHM
Alexander Oelschlegel
Norbert Honheiser
Karlheinz Winter
Andreas Seifert
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2442961A2 publication Critical patent/EP2442961A2/fr
Withdrawn legal-status Critical Current

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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • 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
    • F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/24—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using threads
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2277/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as reinforcement
    • B29K2277/10—Aromatic polyamides [Polyaramides] or derivatives thereof
    • 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
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • 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
    • B29K2995/0063—Density
    • 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
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems

Definitions

  • the invention relates to a method for producing a molded part and a molded part produced in this way for receiving, conducting or storing a fluid, which has a hollow body, which is bounded by a wall, and at least one device for supplying or discharging the fluid to the hollow body.
  • the invention relates to a fluid supply system with at least one such molded part.
  • Molded parts for receiving, conducting or storing gaseous or liquid media which have a hollow body with a wall are known from the prior art.
  • Such moldings are used for example in the form of containers for supplying fluids in motor vehicles, wherein the container contains gaseous or liquid, sometimes combustible substances and provides.
  • the wall of the molded part consists of polymer material.
  • the invention has for its object to provide a method for producing a molded part and a molded part produced in this way, which is operable without damage by acting heat. Finally, it is an object of the invention to provide a fluid supply system with at least one such molded part.
  • the method for producing a molded part comprises the following steps:
  • the wall of the molding is produced in a blown process using polyethylene.
  • a tube is extruded in a per se known method, which is then enclosed by means of a molding tool and formed by blowing a fluid.
  • the polyethylene of the wall is crosslinked peroxide or silane or by the action of radiant energy.
  • the networking can take place immediately after the molding process or only after a longer period of time. The latter can be accomplished in such a way that initially a number of molded parts are produced and these are then cross-linked after an intermediate storage and suitable conditions - even over the period of several weeks.
  • the degree of crosslinking of the polyethylene can be controlled by selecting and using the amount of peroxide and further by the parameters of the crosslinking process.
  • the degree of crosslinking of the polyethylene according to the present invention can be 5 to 95%, preferably 15 to 90% and particularly preferably 50 to 85%. Crosslinking degrees of this magnitude cause the high stability of the wall to elevated temperature. The "creeping" of the material, as it is known from thermoplastics, is thereby prevented.
  • the polyethylene which is used as a polymer material for the production of the hollow body by blowing, is a so-called blowable polyethylene.
  • a corresponding low-viscosity polyethylene is selected, the MFI is 0.1 to 2 g / 10 min at 190 0 C, load 2.16 kg.
  • the density of such a blowable polyethylene is 0.93 to 0.965 g / cm 3 , preferably 0.948 to 0.960 g / cm 3 .
  • Such Phillips types are prepared by means of chromium catalyst on silicate carrier in a polymerization process.
  • polyethylene In addition to polyethylene, it is also possible to use a polyethylene copolymer for blowing, in which case a comonomer of a polyolefin based on a C3 to C8 brick is preferred.
  • a crosslinking agent in the present case an organic peroxide, is added to the polyethylene.
  • Organic peroxides are particularly suitable for crosslinking polyethylene.
  • organic peroxides are used for this purpose which have a typical crosslinking temperature of greater than or equal to 170 ° C.
  • the polyethylene can be added to other components.
  • stabilizers such as phenolic antioxidants, or processing aids, such as lubricants, or crosslinking enhancers, such as TAC (triallyl cyanurate) or TAIC (triallyl isocyanurate) or trimethylolpropane trimethacrylate or divinylbenzene or diallyl terephthalate or triallyl trimellitate or triallyl phosphate in concentrations of 0, 2 to 2.0 weight percent include.
  • the hollow body produced by the blowing process using polyethylene is exposed to a higher temperature over a certain period of time.
  • This may, for example, at a temperature of 180 0 C to 280 0 C include a period of 10 min.
  • the hollow body In order to avoid a collapse or a change in shape of the blown hollow body using polyethylene during the crosslinking process, it can be provided to subject the hollow body during crosslinking by means of sustained overpressure of the blown air (supporting air), which presses the hollow body into a shape defining the outer contour To put pressure.
  • sustained overpressure of the blown air supporting air
  • the so-called two-stage process should first be considered. This is also called the Sioplas process.
  • the polyethylene is first grafted with a silane with the aid of peroxides, this grafted polyethylene is then mixed with a catalyst and can thus be used for producing the hollow body in blow molding.
  • an organotin compound such as DOTL (Dioctylzinnlaurat)
  • other additives selected from heat stabilizers, UV stabilizers and processing aids may be included.
  • additives may be additionally included in this composition of grafted polyethylene and the catalyst batch.
  • a mixture of polyethylene, silane, peroxide and the catalyst is fed to an extruder.
  • Silane, peroxide and catalyst form a liquid phase, which is added to the polyethylene.
  • the crosslinking of the polyethylene is carried out in the presence of moisture at a higher temperature, usually this is accomplished in a steam atmosphere or in a water bath of 90 to 105 0 C over a period of 6 to 15 hours, depending on the wall thickness of the hollow body to be blown.
  • PE-Xc crosslink by exposure to radiation energy polyethylene
  • Support for networking can also be provided by TAC or TAIC.
  • crosslink polyethylene by UV light by adding so-called photoinitiators, for example substituted benzophenones and similar substances, to the polyethylene which initiate the crosslinking reaction under the action of UV light.
  • photoinitiators for example substituted benzophenones and similar substances
  • the inventively provided molding for receiving, conducting or storing a fluid has a hollow body, which is bounded by a wall.
  • the wall may have a multilayer structure.
  • at least one device for supplying or discharging the fluid to the hollow body is provided.
  • the molding for receiving, conducting or storing the fluid is inventively characterized in that the wall contains crosslinked polyethylene.
  • the molding according to the invention can be operated at a continuous use temperature of 150 ° C.
  • the molding may according to the invention in a development next to the wall of cross-linked polyethylene have an outer layer on the wall.
  • the outer layer on the wall contains a filament or a thread made, for example, of carbon or of aramid or of metal or of boron or of glass or of a silicate material or of aluminum oxide or of a high-tenacity and high-temperature-resistant polymer material or of a mixture the aforementioned exists.
  • the latter are also called hybrid yarns.
  • This fiber reinforcement of the outer layer on the wall furthermore contains a polymer material, preferably an epoxy resin.
  • the filaments or filaments contained in the outer layer on the wall are wound and / or braided.
  • it can be provided, in particular, that it is made stronger at particularly selected points of the molded part in order to achieve a particularly high stability there.
  • the wrapping in the region of the device for supplying or discharging the fluid or at other points is particularly strong in order to reinforce the molded part at this point.
  • a special braiding technique is used at selected locations of the molding and / or in the region of the device for supplying or discharging the fluid or at other locations, which are different from the braiding technique at other locations of the molding applied differs.
  • Such a special braiding technique can give the outer layer on the wall a particularly high strength.
  • the outer layer is not connected to the wall. This can bring advantages in the long-term stability of the molding with it.
  • the wall may also be connected to the outer layer.
  • a particularly resistant molded part can be created.
  • the molding further has at least one device for supplying or discharging the fluid to the hollow body.
  • This so-called “boss” represents an opening in the wall of the molding, which serves to fill or empty the molding with the fluid to be absorbed.
  • a means is provided which facilitates the application of the outer layer by winding and / or braiding.
  • the means may be a projection of the surface or a recess provided therein, in which, for example, an axis can be introduced, or comprise a similar configuration.
  • the molding can then be handled with the help of the agent then easier for the winding or Flechtarbeitsgang.
  • the agent can serve, for example, for centering the molded part in the winding and / or braiding operation. It can also be used advantageously as a winding receptacle to move the molding. Finally, the agent can also serve for fixing the molded part in later use.
  • the molded part is thus more resistant to manufacture.
  • the molded part has an outer protective layer which is applied to the outer layer of the wall.
  • the outer protective layer may include a thermoplastic or a coextrudate or a shrink tube, or a knit or knit or braid, or a combination of the foregoing.
  • Such an outer protective layer of the molded part is advantageous when it is exposed to mechanical stresses, such as impacts or similar force effects.
  • such an outer protective layer prevents damage, for example, to the outer wall, which may result in breakage of this wall.
  • the outer protective layer may also be configured to provide a fire-resistant layer that effectively protects the molded article from exposure to fire.
  • the fire-resistant layer contains so-called intumescent materials, which split off gases or water when exposed to an elevated temperature and thus cool the molded part or seal off the action of hot gases, and / or by forming a heat-insulating layer with lower Thermal conductivity to protect the molded part from the action of heat for a certain amount of time.
  • intumescent materials are, for example:
  • compositions comprising a "carbon” species (e.g., polyalcohols), an acid donor (e.g., ammonium polyphosphate), and a propellant (e.g., melamine) which then form a bulky, insulating protective layer by charring and foaming at the same time.
  • a "carbon” species e.g., polyalcohols
  • an acid donor e.g., ammonium polyphosphate
  • a propellant e.g., melamine
  • intumescent materials include, for example, hydrates that exert an endothermic effect when exposed to heat by releasing cooling vapor.
  • An example of this is hydrated alkali metal silicate.
  • Gas-splitting intumescent materials are also known which comprise, for example, melamine, methylolated melamine, hexamethoxymethylmelamine, melamine monophosphate, melamine biophosphate, melamine polyphosphate, melamine pyrophosphate, urea, dimethylurea, dicyandiamide, guanylurea phosphate, glycine or amine phosphate.
  • the foregoing materials release gaseous nitrogen as they decompose under the action of heat. Compounds that release carbon dioxide or water vapor upon exposure to heat could also be used.
  • the outer protective layer can also serve to identify the molded article by taking or imaging information that is expressed in alphanumeric form or as a bar code or as a bar code or as a color code.
  • the outer protective layer can also be provided to give the molded article an attractive appearance.
  • the metal layer may be disposed on the inner layer.
  • the metal layer is preferably designed such that it does not resist the diffusion of the fluid through the wall of the molded part.
  • the metal layer can be perforated, for example, or arranged only in sections.
  • the metal layer can also be provided on the reinforcing layer in another embodiment.
  • the metal layer can also be arranged on the outer layer of the molded part.
  • the molded part is then particularly protected against external influences such as impact or force.
  • the molded part has means for attachment, which are fastened to the outer wall. These means may include tabs or bands of metal or polymeric material.
  • the molded part may comprise means for attachment, which are formed on the outer layer of the wall. It can also be advantageously provided if means for attachment to the outer protective layer are formed.
  • the molding can be advantageously attached for example in a mounting situation in a vehicle.
  • the molded part has a sensor element in or on at least one layer of the wall.
  • the sensor element can be, for example, a strain gauge, which outputs information on a signal change over a change in length.
  • the molded part may also contain an identification element in a development of the invention, which uniquely characterizes the molded part and provides data. This may include data on its history (curriculum vitae during production and use), its operation and other conditions.
  • the identification element may be, for example, a barcode, an alphanumeric code, a raised or recessed element, a hologram, a color element or a RFID element (Radio Frequency Identification Device, identification by means of electromagnetic waves) or a comparable element.
  • An inventive fluid supply system with at least one molded part of the type described above is preferably used in a motor vehicle in the form of a container or a holding element or an air guide part or in a stationary or mobile, in particular decentralized power generating device.
  • FIG. 1 shows a schematic sectional view of a portion of a molded part according to the invention
  • FIG. 2 is a schematic sectional view of a section of a second molded part according to the invention.
  • Fig. 1 shows schematically a section of a molded part according to the invention in the form of a container in a sectional view.
  • the container 1 essentially has an elongated structure in the form of a cylindrical central section 11, which has molded-on pole caps 12 (only one is shown in the figure) at the two Zyiinderenden.
  • the device 4 is designed for the supply and discharge of the fluid.
  • the hollow body 2 of the container 1 is surrounded by a wall 3, which has a layer 31 containing crosslinked polyethylene.
  • the layer 31 is made in one piece in a blown process using polyethylene and then crosslinked.
  • the layer 31 is essentially the same wall thickness everywhere.
  • the externally attached layer 32 of the wall 3 is a reinforcing layer.
  • This reinforcing layer is produced by winding and / or braiding threads or fibers, it is reinforced by a thermoset, in the present case by an epoxy resin.
  • the layer 32 is different in thickness depending on the requirements of stability at different sections.
  • the FIG. Shows that the layer 32 in the region of the device 4 for the supply and removal of the fluid is thickened, since there occur forces to be absorbed by the layer 32.
  • the layer 32 is not connected to the layer 31.
  • a section of a second molded part according to the invention in the form of a container is shown schematically in a sectional view.
  • a device 4 for supplying and discharging the fluid is formed.
  • a protective layer 6 is arranged, which is designed in the form of a shrink tube, which largely envelops the container.
  • Blasectedes polyethylene having an MFI of 0.3 g / 10 min at 190 0 C 1 load 2.16 kg is processed by blow molding to form a molded part in the form of a container.
  • the density of the blowable polyethylene is 0.95 g / cm 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne une pièce moulée permettant de recevoir, d'acheminer ou de stocker un fluide, comprenant un corps creux délimité par une paroi ainsi qu'au moins un dispositif pour acheminer le fluide jusqu'au corps creux et l'en évacuer. Ladite pièce moulée est caractérisée en ce que la paroi contient du polyéthylène réticulé.
EP10724321A 2009-06-16 2010-06-14 Procédé de fabrication d'un élément moulé et élément moulé fabriqué de la sorte Withdrawn EP2442961A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910025385 DE102009025385A1 (de) 2009-06-16 2009-06-16 Verfahren zur Herstellung eines Formteils und derart hergestelltes Formteil
PCT/EP2010/003562 WO2010145795A2 (fr) 2009-06-16 2010-06-14 Procédé de fabrication d'un élément moulé et élément moulé fabriqué de la sorte

Publications (1)

Publication Number Publication Date
EP2442961A2 true EP2442961A2 (fr) 2012-04-25

Family

ID=43122958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10724321A Withdrawn EP2442961A2 (fr) 2009-06-16 2010-06-14 Procédé de fabrication d'un élément moulé et élément moulé fabriqué de la sorte

Country Status (8)

Country Link
US (1) US20120073683A1 (fr)
EP (1) EP2442961A2 (fr)
JP (1) JP5650206B2 (fr)
CN (1) CN102458808B (fr)
BR (1) BRPI1010059A2 (fr)
CA (1) CA2764700A1 (fr)
DE (1) DE102009025385A1 (fr)
WO (1) WO2010145795A2 (fr)

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DE102011054815A1 (de) 2011-10-26 2013-05-16 Rehau Ag + Co Verfahren zur Herstellung eines blasgeformten Behälters
DE102013101360A1 (de) * 2013-02-12 2014-08-14 Hobas Engineering Gmbh Rohrsystem mit Abnutzungs- und Verformungssensor
DE102013113208A1 (de) 2013-11-29 2015-06-03 Rehau Ag + Co. Verfahren zur Herstellung eines Druckspeichers sowie Druckspeicher
US20180320706A1 (en) * 2017-05-04 2018-11-08 General Electric Company Composite airfoil with metal strength

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Also Published As

Publication number Publication date
JP2012530003A (ja) 2012-11-29
WO2010145795A3 (fr) 2011-09-15
DE102009025385A1 (de) 2010-12-23
WO2010145795A2 (fr) 2010-12-23
CN102458808A (zh) 2012-05-16
BRPI1010059A2 (pt) 2016-04-19
US20120073683A1 (en) 2012-03-29
CN102458808B (zh) 2015-08-26
DE102009025385A9 (de) 2012-08-30
JP5650206B2 (ja) 2015-01-07
CA2764700A1 (fr) 2010-12-23

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