WO2011073146A1 - Conduite de carburant et système de réservoir de carburant - Google Patents

Conduite de carburant et système de réservoir de carburant Download PDF

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Publication number
WO2011073146A1
WO2011073146A1 PCT/EP2010/069538 EP2010069538W WO2011073146A1 WO 2011073146 A1 WO2011073146 A1 WO 2011073146A1 EP 2010069538 W EP2010069538 W EP 2010069538W WO 2011073146 A1 WO2011073146 A1 WO 2011073146A1
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WO
WIPO (PCT)
Prior art keywords
plastic
fuel
layer
mixture
compatibilizer
Prior art date
Application number
PCT/EP2010/069538
Other languages
German (de)
English (en)
Inventor
Reinhard Feichtinger
Simon Amesöder
Original Assignee
Reinhard Feichtinger
Amesoeder Simon
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 Reinhard Feichtinger, Amesoeder Simon filed Critical Reinhard Feichtinger
Priority to DE112010004817T priority Critical patent/DE112010004817A5/de
Publication of WO2011073146A1 publication Critical patent/WO2011073146A1/fr

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Classifications

    • 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
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • 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
    • 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
    • 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
    • F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • B29C45/1643—Making multilayered or multicoloured articles having a "sandwich" structure from at least three different materials or with at least four layers
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Definitions

  • the invention relates to a fuel line with a line wall element, consisting of at least one plastic layer and method for their preparation, and a fuel tank system.
  • a fuel line of the aforementioned type is known from DE 40 06 870 C2. It consists of three polyamide layers of at least two different, mutually compatible polyamides.
  • the fuel line has an inner layer of impact-modified polyamide PA 6, an outer layer of impact-modified polyamide PA 6, PA 11, PA 12 or PA 6/12 and a middle layer of a blend polyesteramide with a copolyamide, wherein the copolyamide is formed from monomers having 6, 11 or 12 carbon atoms.
  • DE 78 32 484 111 discloses a fuel line made of a plastic composite system which consists of an inner plastic corrugated tube made of polyoxymethylene with an outer plastic jacket tube made of soft polyvinyl chloride.
  • a fuel attachment is known. It consists of a first section made of a fuel-resistant plastic.
  • a second area consists of a mixture of a fuel-resistant plastic, a non-fuel-resistant plastic and a compatibilizer.
  • a third area consists of a non-fuel-resistant plastic.
  • the second area of the mixture of both plastics is used here solely and the connection of the first and the third area.
  • the third area is provided with a plasma layer.
  • EP 1 108 653 A2 is a fuel tank with a container area made of HDPE and an attachment made of a non-miscible blend of fuel-resistant plastic, z.
  • a component which consists of a tubular body made of thermoplastic material which has a stepped annular body at one end and a retaining rib at the opposite end. Offset by the wall thickness of the body relative to the inner diameter of the body, a circumferential ring is formed with a projection.
  • an intermediate layer In the stepped ring body is introduced as an adhesion promoter, an intermediate layer. Underneath, including the ring with the projection, an annular body element is formed.
  • the ring body member, the intermediate layer and the circumferential ring of the tubular body are then connected together in addition to the mechanical connection that causes the circumferential projection.
  • the plastic of the annular body element is crosslinked in such a way that a chemical bond between the plastics of both parts is effected by bridge formation across the interface between the parts.
  • the tubular body is divided at its end facing the container into an inner and an outer tube body.
  • WO 2008/113821 A1 discloses a fuel tank attachment which has a first region made of a first plastic and a second region, wherein the second region comprises a mixture of the first plastic and a second plastic, the first and the second Area are cohesively connected to each other.
  • the second region consisting of the mixture By virtue of the second region consisting of the mixture, a cohesive connection of the fuel tank attachment to an outer wall of a fuel tank is made possible, the outer wall consisting of the second plastic.
  • the disadvantage in this case is, in particular, the production-technical expenditure for the production of such a fuel tank attachment, since this has two different regions, which consist of different plastics or plastic mixtures, which are bonded together in a material-locking manner. are the, so as to create only the possibility for cohesive connection to the fuel tank.
  • the invention is the object of the invention to provide an improved fuel line and method for their preparation, and a fuel tank system.
  • the fuel line has a wall, which consists of a plastic, at least in a partial region.
  • the plastic is a mixture of a first and a second plastic, wherein the mixture for Mischbarmach ung the first and second plastics contains a compatibilizer.
  • the first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic.
  • the portion of the wall of the fuel line, which consists of the mixture is also referred to as "line wall element" hereinafter.
  • Embodiments of the invention are particularly advantageous since a fuel line according to the invention is simple and inexpensive to produce.
  • the amount of second fuel resistant plastic required to make the fuel line can be reduced, which reduces both the cost and weight of the fuel line.
  • the mixture of the first and second plastics can have a blocking function, adhesion promoter function and a carrier function.
  • the mixing ratio of the plastics can be selected so that one of these functions is in the foreground or else the functions are weighted differently.
  • the plastic pipe can be produced by, for example, extrusion or, in a multi-layer construction, by coextrusion in one working step with the aid of the mixture.
  • the entire wall of the fuel line from the mixture which has particularly great cost and weight advantages.
  • the wall includes a barrier layer.
  • the barrier layer may be a plastic layer of ethylene-vinyl alcohol (EVOH).
  • EVOH ethylene-vinyl alcohol
  • the barrier layer can be introduced in the production of the fuel line using a co-extrusion process in the wall. As a result, the tightness of the fuel line is further improved.
  • a further embodiment of the invention is on both sides of
  • Barrier layer formed a primer layer in the fuel line, in particular also by means of a co-extrusion process.
  • the adhesion promoter layers improve the adhesion of the barrier layer to the mixture.
  • the wall of the fuel line has an inner layer of the first plastic, such as polyamide, and an outer layer of the mixture.
  • a barrier layer may be located between the inner and outer layers and an adhesion promoter layer on both sides of the barrier layer. Also in this case, the production of the fuel line can in turn be carried out by a co-extrusion process.
  • the wall of the fuel conduit has a middle layer of the mixture and an inner layer and an outer layer which embeds the middle layer, wherein the inner layer and the outer layer each consist of either the first or the second plastic can.
  • the conduit wall element is made with a layer of a mixture of a first and a second plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic.
  • conduit wall element is made with a layer of a mixture of a first and a second plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • the first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic and
  • conduit wall element is made with a layer of a mixture of a first and a second plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic
  • a second adhesive layer is arranged under the barrier layer.
  • conduit wall element is produced with a first layer of a mixture of a first and a second plastic and a second layer of the first plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • the first plastic to a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic and
  • a barrier layer of a third plastic is arranged between the first layer and the second layer.
  • conduit wall element is made of a first layer of a mixture of a first and a second plastic and a second layer of the first plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic
  • a barrier layer of a third plastic is arranged between the first layer and the second layer
  • a second adhesive layer is arranged under the barrier layer.
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer.
  • the mixture as surprisingly found, is not only fuel-resistant, it is also fuel-tight. Fuel can not pass through layers that are made from the mixture, so do not diffuse through.
  • the mixing ratio of the plastics in the Mixture can be selected depending on the desired properties, ie with regard to the optimization of the properties barrier function, adhesion promoter function and / or carrier function.
  • conduit wall element is made of a first layer of a mixture of a first and a second plastic and at least one further layer of at least one plastic
  • the mixture of the first and second plasticizers for mixing comprises a compatibilizer
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic.
  • this solution has the particular advantage that the first layer of the mixture in the further layer of any desired plastic takes over the function of a barrier layer and / or separating layer and beyond that of the adhesion-promoting layers.
  • the further layer may be a layer of the first plastic.
  • the layer structure may be such that the first layer of the mixture is arranged between the second and the third layer.
  • the second layer can be made of a fuel-resistant and the third
  • a barrier layer of a third plastic may be provided.
  • the barrier layer effectively prevents diffusion of the fuels through the conduit wall member.
  • a first adhesion promoter layer may be arranged above the barrier layer and a second adhesion promoter layer below the barrier layer.
  • the primer layer supports the adhesion properties to the adjacent layers.
  • the conduit wall element may comprise a second layer of the first plastic.
  • the second layer can be arranged from the first plastic before the first layer to the line inside of the mixture of a first and a second plastic.
  • the first layer which may be lesser in thickness than the second, can better withstand very high fuel load, thus sustainably increasing the life of such a fuel line.
  • the barrier layer may be disposed in the first layer. But it can also be arranged in the second layer.
  • the barrier layer may also be disposed between the first layer and the second layer.
  • the compatibilizer may be a copolymer of the first and second plastics.
  • the copolymer may be a reactively-produced copolymer.
  • the first plastic may be a polyamide and the second plastic may be a polyethelen.
  • the polyamide used can be a PA6, PA66, PA11, PA12, PA6-T, ie the entire polyamide range.
  • the entire range of polyolefins in particular the entire polyethylene pallet or polypropylene pallet, can be used.
  • the additives may be stabilizers, lubricants, dyes, metal filters, metallic pigments, stamped metal filters, flame retardants, impact modifiers, antistatic conductive additives, and the like.
  • Fillers may be glass fibers, glass beads, minerals or the like.
  • the barrier layer may be an EVOH or the like.
  • the first and second primer layers may be an ethylene-octene copolymer POE, a SEBS, a SEPS, a SEEPS or the like.
  • the POU may be a TSPOE 1112 GBLL, a TSPOE 1112 CMB 3-7, a TSPOE 1012 CMB 1.
  • the SEBS, SEPS, SEEPS can be a TPKD X.
  • the object is achieved in a method for producing a fuel line by using a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, solved in such a way,
  • the object is also achieved in a method for producing a fuel line by using a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, solved in such a way,
  • the object is further achieved in a method for producing a fuel line by using a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, solved in such a way,
  • the mixture is a layer having a barrier layer and at least one adhesion promoter layer of a conduit wall element is formed.
  • the object is also achieved in a method for producing a fuel line by using a mixture (35) of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, solved in such a way,
  • the object is achieved in a method for producing a fuel line then by using a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, such
  • the object is in a method for producing a fuel line, moreover, by the use of a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, such
  • the object is also achieved in a method for producing a fuel line by using a mixture of a first and a second plastic with a compatibilizer,
  • first plastic is a fuel-resistant plastic and the second plastic is a non-fuel-resistant plastic, such
  • a conduit wall element is made of a first layer of the mixture of the first and the second plastic and at least one further layer of at least one plastic.
  • the first layer can be formed into the further layer.
  • the first layer can be formed between a second and a third layer.
  • the fuel resistant plastic may be used for the second and non-fuel resistant for the third layer.
  • the compound can act here as a support and Haftvermittier für.
  • a particular advantage is the abandonment of the structure "support-barrier adhesion promoter" to highlight.
  • the ratio of one to the other plastic about 60% by weight to about 40 wt .-% with said additives.
  • a copolymer of the first and second plastics may be used.
  • copolymer a grafted or reactively produced copolymer can be used.
  • an additional compatibilizer may be used, to which a mixture of the first and second plastics in solid or liquid form may be added and which may be at least partially consumed in the copolymerization.
  • a polyamide can be used as the first plastic and a polyethelen as the second plastic. All polyamides and all polyethers can be used.
  • additives stabilizers, lubricants, dyes, metal filters, metallic pigments, stamped metal filters, flame retardants, impact modifiers, antistatic conductive additives and the like can be used.
  • barrier layer an EVOH or the like can be used.
  • an ethylene-octene copolymer POE a SEBS, SEPS, SEEPS or the like
  • one end of the fuel line is connected to a fuel tank attachment of a fuel tank to direct the fuel from the fuel tank to a consumer.
  • a "fuel tank attachment” is here understood to mean all components which are suitable for attachment to a fuel tank, in particular nozzles, valves, closure elements or the like.
  • the first plastic is fuel-resistant plastic.
  • a fuel-resistant plastic is understood here to mean a plastic which does not swell or only slightly swells and which has little or no permeability to fuel or oil if it is exposed to a fuel or oil for a prolonged period.
  • a fuel-resistant plastic is understood to mean a plastic which complies with the Lev II and PZEV standards with regard to emissions.
  • the first fuel-resistant plastic may be, for example, polyamide (PA), in particular PA 12, or polyoxymethylene (POM).
  • PA polyamide
  • POM polyoxymethylene
  • the first plastic can also be another fuel-resistant thermoplastic or a fuel-resistant mixture of compatible plastics.
  • the second plastic is a non-fuel resistant plastic.
  • non-fuel-resistant plastic is understood here to be a plastic that swells up or is otherwise substantially changed in terms of its dimensions or mechanical properties if it is to be used over a longer period of time
  • Fuel comes into contact, and / or is not fluid-tight for fuel or oil.
  • a second non-fuel resistant plastic may be polyethylene (PE) or polypropylene (PP).
  • the second plastic can also be another non-fuel-resistant thermoplastic or a mixture of compatible plastics that are not resistant to fuel.
  • the first and the second plastic are not miscible per se.
  • the mixture therefore includes a compatibilizer to make the first and second plastics miscible with each other.
  • Embodiments of the invention are particularly advantageous for reducing the cost of the fuel line and the fuel tank attachment. In general, namely, the first fuel-resistant plastic is much more expensive than the second non-fuel-resistant plastic.
  • the fuel tank attachment mainly or only consist of the first plastic, which is correspondingly expensive.
  • those areas of the fuel tank attachment which are associated with the fuel in normal operation, i. after being attached to a fuel tank and filling the fuel tank with fuel, are made from the first plastic, whereas one or more other areas which are not normally or not directly exposed to the fuel are made from the mixture which only a certain amount Proportion of the first plastic has, in order to enable the material-coherent connection with the first areas.
  • the present invention turns away from this approach by making not only a single area required for the integral connection with the fuel tank, but preferably the entire fuel tank attachment from the mixture of the first and second plastics, such as by a 1-component plastic injection molding process, by an extrusion process or other molding process.
  • the fuel tank attachment may be formed by a 1-component plastic injection molding process are prepared by injecting the plasticized mixture consisting of the first and second plastic and the compatibilizer into a mold.
  • the fuel tank attachment part which surprisingly attains this due to the first plastic present in the mixture.
  • embodiments of the invention also have mechanical advantages:
  • the compatibilizer is a copolymer of the first and second plastics.
  • the use of such a compatibilizer has the particular advantage that it is not yet necessary to introduce another of the first and second plastics of different material into the mixture. Such a further material could namely be problematic in terms of tightness and long-term stability.
  • the polymer is a "grafted copolymer.”
  • a “grafted copolymer” is used herein
  • the grafted copolymer For the preparation of the grafted copolymer one of the first and second plastics is grafted, so that the grafted plastic can then enter into covalent bonds with the other of the two plastics.
  • the grafting of the plastic takes place, for example, with a reactive radical, such as, for example, a maleic anhydride or an acetyl acid radical.
  • the copolymer then acts in the mixture of the first and second plastics similar to an emulsifier.
  • the copolymer is prepared by means of an additional compatibilizer which is a mixture of the first and the second second plastic in solid or liquid form is added, and which is at least partially consumed in the copolymerization.
  • an additional compatibilizer which is a mixture of the first and the second second plastic in solid or liquid form is added, and which is at least partially consumed in the copolymerization.
  • Compatibilizer reacts with both the first and the second plastic.
  • the additional includes
  • the proportion of the first plastic to the mixture is less than the proportion of the second plastic.
  • the proportion of the first plastic may be at most 35% by weight, in particular between 20% by weight and 30% by weight.
  • the fuel tank attachment is formed at least in a first region for a material connection with a second region, wherein the second region is located on an outer wall of a fuel tank.
  • the second region consists of the second plastic, so that due to the presence of the second plastic in the mixture, the cohesive connection can be realized.
  • first and the second region are directly connected to one another.
  • the first area is upgraded so that it is fuel-resistant and at the same time connectable. This is a cohesive connection.
  • the fuel tank attachments this means that they can be manufactured in any quantity before and can be welded to the tank without spacers.
  • non-durable plastic significantly reduces the cost of producing the fuel attachment. The higher the proportion of non-fuel-resistant plastic, the less expensive the mixture used and thus the fuel attachment.
  • the mixture can at least
  • the mixture may consist of
  • the first plastic may be a polyamide and the second plastic may be a polyethelen.
  • the polyamide used can be a PA6, PA66, PA1, PA12, PA6-T, ie the entire polyamide range. Likewise, the entire Polyethelen range can be used.
  • the compatibilizer may be a copolymer of the first and second plastics.
  • the copolymer may be a reactively-produced copolymer.
  • the copolymer may also have an additional compatibilizer.
  • the additives can be stamped metal filters, flame retardants,
  • Toughening modifiers antistatic agents, conductivity additives and the like. Be.
  • the fillers may be glass fibers, glass beads, minerals or the like.
  • a tubular body element with an annular body element arranged thereon For connection to an opening of a container made predominantly of polyethelene a tubular body element with an annular body element arranged thereon is provided,
  • tubular body member and the annular body member can be made in one piece from the mixture, so that the copolymer annular body member having a surface element with the outer wall of the
  • Fuel tanks can be connected.
  • the copolymer ring member may be disposed at a distance from the pipe outlet opening of the pipe body member on the pipe body member. As a result, the fuel can be kept away from the weld.
  • An inner diameter of the tubular body member may be larger than a diameter of the opening of the container.
  • the tubular body member may have at least one circumferential terminal rib.
  • the fuel tank attachment may, for example, perform a function as a nozzle, tank vent valve, closure element or the like.
  • This layer additionally enhances the good adhesion properties.
  • the layer can therefore be applied completely or only selectively to the surface element.
  • a selectively applied layer ensures good adhesion properties.
  • This layer may be about 0.001 pm to 100 pm thick.
  • the layer can be made, for example, by plasma coating, for example, as known per se from DE 102 23 865 A1.
  • the plasma coating can be attached to a joining surface of the copolymer flange body a chemically active layer, wherein the layer may include, for example, low-molecular-weight polymer fragments.
  • the copolymer flange body can consist of about 10 to 85% by weight of polyamide and about 85 to 10% by weight of polyethylene and about 5% by weight of additives. In particular, an equal ratio of polyamide to polyethylene is possible. How the shares are to be distributed depends on the respective conditions of use. But it is also possible that the flange body may consist of layers with different mixing ratios.
  • a polyethylene flange body may consist of about 95% by weight of a polyethylene and about 5% by weight of additives. These common additives may be stabilizers, lubricants, dyes, metal filters, metallic pigments, stamped metal filters, flame retardants, impact modifiers, antistatic agents, conductivity additives and the like.
  • the inner diameter of the flange body may be larger than a diameter of the opening of the container.
  • a first tubular body element may terminate at the end facing away from the container in a connection unit.
  • the component can be used as a nozzle.
  • a second tubular body element may be closed at the end facing away from the container with a cover element.
  • a cover element In this form, such a component can be used as a closure element for unused openings of the container.
  • At least one connection pipe element can be arranged below the cover element of the second pipe body element. This is a housing for a tank vent valve into which a valve element can be used.
  • the connection unit and / or the connection pipe elements can end with at least one circumferential connection rib. This allows the connection of a hose.
  • the invention relates to a fuel tank system, in particular a motor vehicle fuel tank system, such as a fuel tank system for a vehicle, in particular a motor vehicle or a utility vehicle, with a fuel tank, a fuel tank attachment and a connectable or connected to the fuel tank attachment fuel line.
  • a fuel tank system in particular a motor vehicle fuel tank system, such as a fuel tank system for a vehicle, in particular a motor vehicle or a utility vehicle, with a fuel tank, a fuel tank attachment and a connectable or connected to the fuel tank attachment fuel line.
  • both the fuel tank attachment and the fuel line consist of the mixture.
  • the swelling and thermal expansion of the fuel tank attachment such as e.g. the neck, and the fuel line equal, so that the transition from the fuel tank attachment to the fuel line is particularly fuel-tight.
  • the fuel tank has an opening and an outer wall which may be made of the second plastic.
  • the fuel tank attachment part is partly guided through the opening in the fuel tank and in its first area is adhesively connected to the outer wall of the fuel tank, for example by welding a joining surface of the first area to the outer wall.
  • the welding of one or more fuel tank attachment parts according to the invention results in a fuel tank system.
  • the fuel tank attachment for example, it may be a port to which the fuel line is connected.
  • the neck may have a pine cone profile.
  • the invention relates to a method for producing a fuel tank attachment.
  • a joining surface of the first region is pretreated prior to the material-bonding connection in order to increase the reactivity of the joining surface.
  • This can be done by a plasma treatment of the joint surface, for example by means of a plasma nozzle, as it is known per se from EP 0 986 939 B1.
  • the plasma treatment not only results in an increase in the reactivity, but also in an improvement in compatibility, specifically by the removal of passivating layers which can adhere to the joining surface.
  • a pretreatment of the joining surface by a plasma coating, flaming, chemical etching or mechanical pretreatment can take place.
  • the increased reactivity of the joining surface due to such a pretreatment is particularly advantageous for the realization of the integral connection between the first and second components.
  • the cohesive connection is produced by two or more components plastic injection molding.
  • the second component is first realized by injecting the mixture into a mold.
  • the mold is then opened to pretreat a joint surface of the second component, for example by a plasma treatment or a plasma coating.
  • the first component is produced and materially connected to the second component by the first plastic is injected into the mold.
  • Embodiments of the invention are particularly advantageous because the shaping and assembly of the first and second components, that is, for example, a tubular body member and a flange, can be particularly cost-effective.
  • at least one surface element, in particular a joining surface, of the flange body can be coated with a plasma and then the flange body with the plasma-treated surface element fluid-tightly connected to the annular body element. Coating saves material while increasing the adhesion.
  • the layer can be generated in two ways:
  • a gas can ignite a discharge in a gas atmosphere, which ions can be extracted from the flange body, atomized and accelerated to a short distance and directed as a jet onto the surface element.
  • the discharge of air or components of the air, or a noble gas or noble gas and their compounds can be ignited as gas.
  • Noble gas may be helium, neon, argon, krypton, xenon, radon and mixtures thereof and / or compounds.
  • a gas atmosphere in a gas components may be included, which react in the open state on the surface element of the flange body and form a second layer.
  • components of organic nature can react in air as gas. But it can also react in air as a gas components inorganic type.
  • a surface element of a flange body or the surface elements of a plurality of flange body can be treated. Because the treatment can be done openly, ie not under vacuum, the costs are lowered very sustainably.
  • a body made of a thermoplastic material can first be formed for the tubular body element, which body can be at least partially coated with a polyamide body. Similar to the hot dip galvanizing The cost-intensive material is applied to a cost-effective, mainly to use its positive properties.
  • the thermoplastic material body may be formed of polyester, polyacetate, polyolefin, fluorothermoplastic, polyphenylsulfide or a lower cost polyamide having lower fuel resistance.
  • the flange body can then be welded to the tank. Whether nozzle or blind flange or tank vent valve, all these components can be welded tightly in another way in the same way with the container over the openings. This reduces the costs of final assembly.
  • FIG. 1 shows a first embodiment of a fuel line
  • FIG. 2 shows a second embodiment of a fuel line
  • FIG. 3 shows a third embodiment of a fuel line
  • FIG. 4 shows a fourth embodiment of a fuel line
  • Fig. 6 shows a preparation of a mixture of two plastics
  • FIG. 7 shows a component, which is attached to a container and designed as a connecting piece, in a schematic sectional representation
  • 9 is an exploded, cut, schematic partial representation of an embodiment of a fastening of a tubular body member of a nozzle according to FIG. 7 or tank venting valve according to FIG. 8, FIG.
  • FIG. 10 shows a schematic representation of embodiments of a first component and of a second component before a material-bonding connection during a pretreatment
  • FIG. 11 shows embodiments of a fuel tank according to the invention with a fuel attachment in a schematic representation.
  • Fuel lines 100 are used to forward fuel z. From a tank to a consumer.
  • the fuels may be gasoline, diesel, bio-diesel or the like and their vapors.
  • the consumer may be an internal combustion engine. When bridging the distance from the tank to the internal combustion engine, not only the internal fuel flows into the fuel line, but also the remainder of the fuel residue, dirt, heat, cold, shock, and the like.
  • FIG. 1 shows a first fuel line 100 whose conduit wall element 101 is made of a mixture 35 (see also FIG. 6) of a first and a second plastic A, B,
  • the mixture 35 consists of:
  • the compatibilizer is a copolymer AB of the first and second plastics.
  • the copolymer AB is a grafted copolymer, that is, a reactive copolymer.
  • an additional compatibilizer is used, to which a mixture of the first and second plastic A, B in solid or liquid form is added and which is at least partially consumed in the copolymerization.
  • plastic A is a fuel-resistant plastic, such.
  • polyamide hereinafter called PA
  • the plastic B is a non-fuel-resistant plastic that is not miscible with the plastic A.
  • the plastic B is a polyethelen, hereinafter called PE.
  • the mixture includes the already mentioned compatibilizer, such as, for example, a copolymer of the plastics A and B.
  • the copolymer is prepared by, for example, providing the PE with a reactive residue, e.g. B. with maleic anhydride or an acetyl acid residue, and then by the so Grafted PE with PA covalent bonds. Alternatively, it can be grafted PA in order to then covalent bonds with the PE.
  • a mixture with the following composition is used:
  • the high percentage of polyethelene makes the mixture so inexpensive with simultaneous fuel resistance and above all fuel-tightness. If the conditions of use require, the mixing ratio can be changed.
  • a line wall element 101 is formed from the mixture 35 for the fuel line element 100. The wall thickness can be adjusted accordingly.
  • a second fuel line 100 is shown, whose conduit wall element 101 is produced with a layer 201 of the mixture 35 (see also FIG. 6) of the first and the second plastic A, B,
  • first plastic A is also the fuel-resistant plastic and the second plastic B is also the non-fuel-resistant plastic.
  • the mixture 35 and plastics A, B correspond to those of the description for the first line element 100, except that here by means of a coextrusion process for producing the fuel line element 100 from the mixture 35 in the conduit wall member 101, a barrier layer 203 is formed with a.
  • the wall thickness can also be adjusted as needed.
  • the barrier layer 203 is an EVOH or the like.
  • a third embodiment of a fuel line 100 is shown. From the mixture 35, the PE / PA mixture layer 201 for the conduit wall member 101 is produced. Approximately in the middle of the layer 201, the barrier layer 203 of EVOH and on both sides thereof a tie layer 204, 205 is formed, e.g. through coextrusion.
  • a fourth embodiment of a fuel line 100 is shown. From the inner layer 202 of PA and the outer PE / PA mixture layer 201, which consists of the mixture 35, the line wall element 101 is manufactured. The mixture 35 and the plastics A, B correspond to those of the description for the preceding line elements 100 according to FIGS. 1 to 3. Between the layer 201 and the layer 202, the barrier layer 203 is formed of EVOH and on both sides of the adhesion promoter layers 204, 205.
  • the PA is e.g. Polyamide PA6, PA66, PA 1, PA 12 or the like. All polyamides can be used.
  • 5 shows a fifth embodiment of a fuel line 00 whose conduit wall element 101 is produced with a layer 201 of the mixture 35 (see also FIG. 6) of the first and second plastics A, B,
  • first plastic A is also the fuel-resistant plastic and the second plastic B is also the non-fuel-resistant plastic.
  • the layer 201 is embedded in further layers 202 and 206.
  • the layer 201 assumes the function of the barrier layer and the adhesion promoter layers. It can be omitted here on the structure "support-barrier adhesion promoter".
  • Both layers 202 and 206 consist only of a fuel-resistant plastic A;
  • Both layers 202 and 206 consist only of a non-fuel resistant plastic B;
  • the layer 201 is disposed between two layers or in one of the two layers, and
  • layer 202 is the inner layer and layer 206 is the outer layer or
  • the layer 206 is inner layer and the layer 202 outer layer, the latter being shown in FIG.
  • the layer 202 may be made of the fuel-resistant plastic A, which is a polyamide.
  • the layer 206 consists e.g. from the non-fuel resistant fuel B, which is a polyethelen.
  • the layer 201 of the mixture 35 is not only resistant to fuel, but also fuel-tight. It acts in the fuel line 100 according to FIG. 5 - and this should be emphasized again as a support, barrier and adhesion promoter layer.
  • Containers for fuels are always more complicated in their design to provide the largest possible capacity in confined spaces. The shape is very different depending on the vehicle type. Fuel attachment components, such as nozzles or valves, are therefore prefabricated separately and mounted on the vessel only during final assembly.
  • the containers are usually made of several layers, of which the outer wall 41 is made of polyethylene.
  • the ring body member 12 may be continued to have a thickness D similar to an annular flange body.
  • the annular body element 12 is located above an opening 5 of the container 4.
  • the annular body member 12 of the tubular body member 11 has in the region of the opening 5 a distance a to the tube outlet opening 18, which is greater than the thickness D of the flange body-shaped continuation.
  • an outer diameter dR of the tubular body member 11 is about as large as an inner diameter dB of the opening but smaller than an inner diameter dF of a flange-like continuation 36 of the annular body member 12 (see also Fig. 9).
  • a valve element 2 shown in FIG. 8 has
  • annular body element 22 Below the annular body member 22, the flange body-shaped continuation 36 of the annular flange body 3 is also formed with the thickness D.
  • the annular body element 22 is located above the opening 5 of the container 4.
  • the annular body member 22 of the tubular body member 21 has in the region of the opening 5 also at a distance a to its end, which is substantially larger than the thickness D of the flange body-shaped continuation 36.
  • the tubular body member 21 protrudes far into the opening 5 of the container 4.
  • tube outlet openings 28 are arranged.
  • the outer diameter dR of the tubular body member 21 is about as large as the inner diameter dB of the opening, but smaller than the inner diameter dF of the flange body-shaped continuation 36 (see also Fig. 9).
  • the opposite end of the tubular body member 21 is closed with a lid member 24.
  • connecting pipe elements 25 and 26 with at least one circumferential retaining rib 23.1, 23.2, 23.3, 23.4 are arranged on the tubular body element 21, onto which fuel lines can be pushed.
  • a valve element 27 is arranged.
  • FIGS. 10 and 11 schematically show embodiments of the component 12 for the fuel attachment 1.
  • the component 12 consists essentially of a mixture 35 of a plastic A and a plastic B.
  • plastic A is a fuel-resistant plastic, such.
  • polyamide hereinafter called PA, in particular PA12, POM or another fuel-resistant thermoplastic.
  • the plastic B is a non-fuel-resistant plastic that is immiscible with the plastic A.
  • the plastic B is a Polyethelen, hereinafter called PE, in particular high density PE (HOPE), polypropylene (PP) or another thermoplastic, immiscible plastic.
  • PE Polyethelen
  • HOPE high density PE
  • PP polypropylene
  • the mixture contains a compatibilizer, such as, for example, a copolymer of the plastics A and B.
  • a compatibilizer such as, for example, a copolymer of the plastics A and B.
  • the reactively produced copolymer is prepared by, for example, providing the PE with reactive residue, e.g. B. with
  • the reaction may be one step, i. the plastics A and B form a compound with each other or via the sole compatibilizer in a reaction step.
  • a joining surface 42 is here subjected to a pretreatment.
  • the pretreatment is carried out with a plasma 37.
  • the plasma flows out of a plasma nozzle 38 in the direction of arrow 38 along a joining surface 42, so that the entire joining surface 42 is swept over and a plasma layer 43 is formed.
  • a cohesive connection of a second embodiment of the component 12 of the fuel attachment 1 from the mixture 35 with an outer wall 41 of a fuel tank 4 is possible as follows:
  • the fuel tank 4 has an outer wall, the consists essentially of the plastic B. Since the mixture 35, of which the component 12 is made, also includes the plastic B, a material connection between the two components 1 and 4 is possible.
  • the proportion of the plastic B in the mixture is greater than that of the plastic A, such pretreatment of the joining surface 42 can be dispensed with. There is thus an untreated joint surface 42.
  • the production and attachment of the component as a nozzle 1 according to Figure 7 and the component as a tank vent valve 2 according to Figure 8 will be explained with the aid of Figures 9 to 5.
  • the connecting piece 1 according to FIG. 7 and the valve unit 2 according to FIG. 8 are designed to be similar in the region of tubular body element 11, 21 and annular body element 12, 22.
  • the ring body element is thereby nose-shaped out of the tubular body element.
  • the underside surface element of the annular body element is substantially planar.
  • the outer transitions are rounded, while the inner wall passes smoothly.
  • the tubular body member 11, 21 and annular body member 12, 22 are made of the mixture 35 of PE and PA with the reactively produced PEgPA copolymer as
  • Compatibilizer molded by injection molding, preferably by one-component injection molding of the mixture.
  • the mixture 35 may additives such as lubricants, metallic pigments and the like., Such as. B. reinforcing materials, in particular glass fibers, (see Figures 10 and 11),
  • the joining surface of the annular body element 12, 22 can as
  • the treatment of the joining surface 43 is activated by an activation, for. As plasma treatment or a plasma coating made.
  • the thickness of the layer can be about 0.001 ⁇ to 100 pm.
  • the annular body element 12, 22 has a treated joining surface 43
  • the annular body element 12, 22 is extended around the flange body-shaped continuation 36 (see also FIG. 9) and has an untreated joining surface 42 and
  • the annular body element 12, 22 is extended by the flange body-shaped continuation 36 (see also FIG. 9) and has a treated joining surface 43.
  • the tubular body member 11 terminates in the circumferential retaining rib 13th
  • the opposite end 28 is just long enough from the lower edge of the flanged body member so that it may extend into the container 4 short of the inner wall thereof.
  • Tubular body element 21 connecting tube elements 25, 26 with holding ribs 23.1
  • the plasma is a mixture of positive and negative charge carriers in relatively high density, neutral particles and photons.
  • the densities of the positive ions and the electrons are so great that the charges compensate each other over time.
  • the plasma is to be understood as a separate state of matter.
  • the plasma atomization (cathode jet atomization) is in a gas atmosphere, z.
  • air and its components or a noble gas atmosphere for.
  • helium, neon, argon, krypton, xenon, radon and their compounds ignited a discharge.
  • the ions are extracted from the plasma from the carrier, i. H. from the surface element 43 of the tubular body element 21, ie the PE - PA mixture as target, d. H.
  • Layer material extracted which is thereby atomized.
  • ions are generated in the ion source and accelerated to a short distance and directed as a beam on the surface element.
  • the plasma layer 43 grows under open conditions.
  • the components can also be contained in a gas, in particular air, components which react in the open state on the surface element and form the plasma layer 43.
  • the components may be organic or inorganic in nature.
  • the plasma layer 43 is applied in the already mentioned thickness range of about 0.001 pm to 100 pm.
  • both nozzle 1 and tank vent valve 2 are prepared for attachment to the container 4.
  • the nozzle 1 and the tank vent valve 2 are welded to the intended opening 4 for them on the container 4 made of PE.
  • the flange body member 12, 21 and the outer wall 41 of the container 4 are connected to each other.
  • PE ⁇ PE / PA are chosen in such a way that the cohesive connections reliably withstand possible swelling, since swelling, albeit to a lesser extent, can also occur with fuel-resistant plastic.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Laminated Bodies (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne une conduite de carburant comprenant un élément de paroi de conduite (101), constitué d'au moins une couche de matière plastique (201, 202, 203, 204, 205, 206). L'invention est caractérisée en ce que l'élément de paroi de conduite (101) est réalisé au moyen d'une couche (201) constituée d'un mélange (35) composé d'une première et d'une seconde matière plastique (A, B), le mélange (35) composé des première et seconde matières plastiques (A, B) contenant un agent de compatibilité visant à rendre lesdites matières plastiques miscibles, la première matière plastique (A) étant une matière plastique résistante aux carburants et la seconde matière plastique (B) étant une matière plastique non résistante aux carburants.
PCT/EP2010/069538 2009-12-15 2010-12-13 Conduite de carburant et système de réservoir de carburant WO2011073146A1 (fr)

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DE112010004817T DE112010004817A5 (de) 2009-12-15 2010-12-13 Kraftstoffleitung und kraftstofftanksystem

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DE102009058360.2 2009-12-15
DE200910058360 DE102009058360A1 (de) 2009-12-15 2009-12-15 Kraftstoffleitung

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120740A (zh) * 2019-12-27 2020-05-08 广西南宁三正工程材料有限公司 一种pe双壁波纹管及其加工方法

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DE7832484U1 (de) 1978-11-02 1979-02-08 Hoechst Ag, 6000 Frankfurt Kraftstoffleitung aus kunststoffverbundsystem
DE4006870C1 (fr) 1990-03-05 1991-07-04 Ems-Inventa Ag, Zuerich, Ch
DE19535413C1 (de) 1995-09-23 1996-10-02 Rasmussen Gmbh Rohrartiger Stutzen
EP1036968A1 (fr) * 1999-03-16 2000-09-20 Atofina Tube multicouche à base de polyamides pour le transport d'essence
EP1108653A1 (fr) 1999-03-04 2001-06-20 Kuraray Co., Ltd. Reservoir a combustible
EP1208969A2 (fr) * 2000-11-23 2002-05-29 Rasmussen GmbH Tube multicouche
DE10062997A1 (de) 2000-12-16 2002-07-18 Rasmussen Gmbh Rohrartiger Stutzen
US20030124281A1 (en) 2001-12-28 2003-07-03 Degussa Ag Liquid-or vapor-conducting system with a jointing zone made from a coextruded multilayer composite
DE10223865A1 (de) 2002-05-29 2003-12-24 Plasmatreat Gmbh Verfahren und Vorrichtung zur Plasmabeschichtung von Werkstücken
EP0986939B1 (fr) 1998-04-03 2004-06-23 PlasmaTreat GmbH Dispositif de traitement de surfaces au plasma
US20060099365A1 (en) 2004-10-26 2006-05-11 Tokai Rubber Industries, Ltd. Joint part for resin fuel tank and manufacturing method thereof
WO2008113821A1 (fr) 2007-03-21 2008-09-25 Reinhard Feichtinger Composant rapporté pour réservoir de carburant et procédé de fabrication d'un composant rapporté pour réservoir de carburant

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7832484U1 (de) 1978-11-02 1979-02-08 Hoechst Ag, 6000 Frankfurt Kraftstoffleitung aus kunststoffverbundsystem
DE4006870C1 (fr) 1990-03-05 1991-07-04 Ems-Inventa Ag, Zuerich, Ch
DE19535413C1 (de) 1995-09-23 1996-10-02 Rasmussen Gmbh Rohrartiger Stutzen
EP0986939B1 (fr) 1998-04-03 2004-06-23 PlasmaTreat GmbH Dispositif de traitement de surfaces au plasma
EP1108653A1 (fr) 1999-03-04 2001-06-20 Kuraray Co., Ltd. Reservoir a combustible
EP1036968A1 (fr) * 1999-03-16 2000-09-20 Atofina Tube multicouche à base de polyamides pour le transport d'essence
EP1208969A2 (fr) * 2000-11-23 2002-05-29 Rasmussen GmbH Tube multicouche
DE10062997A1 (de) 2000-12-16 2002-07-18 Rasmussen Gmbh Rohrartiger Stutzen
US20030124281A1 (en) 2001-12-28 2003-07-03 Degussa Ag Liquid-or vapor-conducting system with a jointing zone made from a coextruded multilayer composite
DE10223865A1 (de) 2002-05-29 2003-12-24 Plasmatreat Gmbh Verfahren und Vorrichtung zur Plasmabeschichtung von Werkstücken
US20060099365A1 (en) 2004-10-26 2006-05-11 Tokai Rubber Industries, Ltd. Joint part for resin fuel tank and manufacturing method thereof
WO2008113821A1 (fr) 2007-03-21 2008-09-25 Reinhard Feichtinger Composant rapporté pour réservoir de carburant et procédé de fabrication d'un composant rapporté pour réservoir de carburant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120740A (zh) * 2019-12-27 2020-05-08 广西南宁三正工程材料有限公司 一种pe双壁波纹管及其加工方法

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