EP1237714A1 - Multilayer pipe made of plastic material for transferring fluid such as fuel - Google Patents

Multilayer pipe made of plastic material for transferring fluid such as fuel

Info

Publication number
EP1237714A1
EP1237714A1 EP00977645A EP00977645A EP1237714A1 EP 1237714 A1 EP1237714 A1 EP 1237714A1 EP 00977645 A EP00977645 A EP 00977645A EP 00977645 A EP00977645 A EP 00977645A EP 1237714 A1 EP1237714 A1 EP 1237714A1
Authority
EP
European Patent Office
Prior art keywords
polyamide
layer
fuel
plastic material
pipe made
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Withdrawn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
EP00977645A
Other languages
German (de)
French (fr)
Inventor
Pierre Milhas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nobel Plastiques SA
Original Assignee
Nobel Plastiques SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nobel Plastiques SA filed Critical Nobel Plastiques SA
Publication of EP1237714A1 publication Critical patent/EP1237714A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer

Definitions

  • the proportion by weight of polyamide polyolefin (polyethylene or polypropylene) will be 70/30 for the reasons explained below. Its thickness will be of the order of 0.4 - 0.5 mm.
  • the third layer according to the invention is a structural layer forming, so to speak, the mechanical reinforcement of the tube according to the invention. It is formed by a polyamide, for example a PA6 comprising an agent modifying impact resistance in a weight concentration of the order of 10 to 50% of the composition.
  • This layer naturally adheres to the layer which is adjacent to it, that is to say the layer of EVOH by the very fact that it comprises a polyamide.
  • We will choose its thickness at least equal to 0.3 mm and preferably between 0.3 to 0.6 mm.
  • a last layer is applied to this reinforcing layer: this last layer is formed from a polyamide modified to resist zinc chloride.

Landscapes

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

Abstract

The invention concerns a multilayer pipe made of plastic material for transferring alcoholized fluid or fuel, in an internal combustion engine environment, comprising from inside outwards: an inner layer of a polyamide and polyethylene or polypropylene mixture; a polyvinyl alcohol layer; a polyamide layer including an impact modifier; an outer layer based on polyamide modified to be zinc-chloride resistant.

Description

Tuyau raulticouche en matière plastique pour transfert de fluide du genre carburant Plastic hose for the transfer of fuel-like fluids
Dans le domaine de la construction automobile, les conduites de transfert de fluide se classent dans deux catégories : les conduites pour les fluides haute pression et les conduites pour les fluides basse pression. Les fluides haute pression (liquide de freinage, carburant au niveau des injecteurs, ... ) sont encore aujourd'hui véhiculés par des conduites métalliques alors que les conduites de fluide basse pression (carburant, liquide de refroidissement, liquide de climatisation, liquide de lave- glace,...) sont de plus en plus souvent réalisées en matière synthétique pour obtenir un gain de poids.In the automotive industry, fluid transfer lines fall into two categories: lines for high pressure fluids and lines for low pressure fluids. High-pressure fluids (brake fluid, fuel at the injectors, etc.) are still transported today through metal pipes, while low-pressure fluid pipes (fuel, coolant, air-conditioning liquid, windshield washer, ...) are more and more often made of synthetic material to obtain weight gain.
Les conduites en matière plastique doivent satisfaire à de nombreuses exigences tant en ce qui concerne leurs propriétés mécaniques que leurs propriétés chimiques à l'égard de leur environnement interne et externe (imperméabilité au liquide véhiculé, résistance chimique à l'égard de ces liquides et de l'atmosphère extérieure, résistance mécanique à l'usure et à l'abrasion, résistance au feu, ...) . Elles doivent en outre être aisément conformables et recevoir de manière étanche des dispositifs de connexion. Elles ont enfin à être produites au moindre coût .The plastic pipes must meet many requirements both with regard to their mechanical properties and their chemical properties with regard to their internal and external environment (impermeability to the transported liquid, chemical resistance with regard to these liquids and the external atmosphere, mechanical resistance to wear and abrasion, fire resistance, etc.). They must also be easily conformable and receive sealingly connection devices. Finally, they have to be produced at the lowest cost.
Il existe de nombreuses conduites répondant plus ou moins bien à l'ensemble de ces exigences. En général le degré de qualité obtenu est d'autant plus élevé que l'on emploie des matériaux nobles donc de prix élevé .There are many pipes that more or less meet all of these requirements. In general, the degree of quality obtained is all the higher the more noble materials are used and therefore the price is high.
Pour trouver un compromis acceptable entre les performances et le coût du produit, l'homme de métier doit tenter de nombreuses expériences portant sur de nombreuses combinaisons de matière, d'autant que les exigences des constructeurs automobiles sont de plus en plus sévères .To find an acceptable compromise between performance and cost of the product, a person skilled in the art must attempt numerous experiments relating to numerous combinations of material, all the more so as the requirements of automobile manufacturers are increasingly severe.
Pour répondre à ces exigences tant techniques qu'économiques, l'invention a pour objet un tube en matière plastique πvulticouche destiné au transfert de fluide alcoolisé ou de carburant, dans l'environnement d'un moteur à combustion interne, comportant de l'intérieur vers 1 ' extérieur :To meet these technical and economic requirements, the invention relates to a multi-layer plastic tube intended for the transfer of alcoholic fluid or fuel, in the environment of an engine. internal combustion, from the inside to the outside:
- une couche interne d'un mélange de polyamide et polyethylene ou polypropylène, - une couche de polyvinylalcool,- an inner layer of a mixture of polyamide and polyethylene or polypropylene, - a layer of polyvinyl alcohol,
- une couche de polyamide comprenant un agent modificateur de la résistance aux chocs,- a polyamide layer comprising an agent modifying impact resistance,
- une couche externe à base de polyamide modifié pour résister au chlorure de zinc. Dans les tubes de l'art antérieur, la couche interne est généralement réalisée par un polyamide par exemple PA6. Cette matière possède en effet d'excellentes qualités à l'égard du fluide véhiculé lorsque c'est un carburant ou un fluide alcoolisé, en ce qui concerne notamment 1 ' extractibilité de la matière. Mais un polyamide constitue une barrière d'efficacité moyenne au composant alcoolisé. En revanche, le polyethylene est une barrière efficace à ce type de composant. En outre, son prix est de plusieurs fois inférieur à celui du polyamide. Dans l'invention, un mélange polyamide polyethylene constitue un compromis avantageux pour constituer la couche interne d'une telle tubulure. Ce mélange est disponible sur le marché sous le nom d'ORGALLOY en provenance de la société ELF ATOCHEM. Outre le cumul des propriétés de chacun de ses composants, une telle couche, compte tenu de la différence de coût entre ceux-ci, est plus économique qu ' une couche de polyamide .- an outer layer based on polyamide modified to resist zinc chloride. In the tubes of the prior art, the internal layer is generally produced by a polyamide, for example PA6. This material has indeed excellent qualities with respect to the fluid conveyed when it is a fuel or an alcoholic fluid, with regard in particular to the extractability of the material. But a polyamide constitutes a barrier of average effectiveness to the alcohol component. In contrast, polyethylene is an effective barrier to this type of component. In addition, its price is several times lower than that of polyamide. In the invention, a polyamide polyethylene blend constitutes an advantageous compromise for constituting the internal layer of such a tube. This mixture is available on the market under the name ORGALLOY from the company ELF ATOCHEM. In addition to the cumulative properties of each of its components, such a layer, taking into account the cost difference between them, is more economical than a polyamide layer.
De manière préférée, la proportion en poids polyamide polyoléfine (polyethylene ou polypropylène) sera de 70/30 pour les raisons expliquées ci-après. Son épaisseur sera de l'ordre de 0,4 - 0,5 mm.Preferably, the proportion by weight of polyamide polyolefin (polyethylene or polypropylene) will be 70/30 for the reasons explained below. Its thickness will be of the order of 0.4 - 0.5 mm.
La seconde couche du tube multicouche selon l'invention est formée par un polyvinylalcool et de préférence par un éthylène-vinylalcool (EVOH) . Ce produit est présent sur le marché sous l'appellation commerciale EVAL en provenance de la société URARAY. La principale qualité de ce produit est de constituer un renforcement de 1 ' effet barrière de la première couche à 1 ' égard des composants alcoolisés du fluide véhiculé. En outre, son adhésion avec la couche interne est réalisée naturellement par coextrusion, adhésion d'autant plus aisée que la proportion de polyamide dans 1 ' ORGALLOY est importante. Une épaisseur au plus égale à 0,15 mm suffit.The second layer of the multilayer tube according to the invention is formed by a polyvinyl alcohol and preferably by an ethylene vinyl alcohol (EVOH). This product is present on the market under the trade name EVAL from URARAY. The main quality of this product is to reinforce the barrier effect of the first layer with respect to the alcohol components of the fluid carried. In addition, its adhesion with the internal layer is achieved naturally by coextrusion, adhesion all the easier as the proportion of polyamide in one ORGALLOY is important. A thickness at most equal to 0.15 mm is sufficient.
La troisième couche selon 1 ' invention est une couche structurelle formant pour ainsi dire l'armature mécanique du tube selon l'invention. Elle est formée par un polyamide, par exemple un PA6 comportant un agent modificateur de la résistance aux chocs dans une concentration pondérale de l'ordre de 10 à 50 % de la composition. Cette couche adhère naturellement à la couche qui lui est adjacente, c'est-à-dire la couche d'EVOH du fait même qu'elle comporte un polyamide. On choisira son épaisseur au moins égale à 0,3 mm et de préférence comprise entre 0,3 à 0,6 mm. Pour parfaire le tube, et notamment pour augmenter sa résistance à l'égard de l'atmosphère externe, une dernière couche est appliquée sur cette couche d'armature : cette dernière couche est formée d'un polyamide modifié pour résister au chlorure de zinc. En effet, le chlorure de zinc est un composé abondant dans les sels de déneigement des voies de circulation. Il a pour effet de fragiliser le polyamide simple en le durcissant et le rendant cassant. La modification consiste en substance à réaliser un mélange d'un copolymère polyamide tel que le PA6 et d'un second polyamide ou copolyamide thermoplastique comprenant au moins neuf atomes de carbone. Ce produit est disponible sur le marché sous l'appellation commerciale SNIAMID PSB 162 D en provenance de la société RHODIA (ex société NYLTECH ITALIA) . On l'applique sous une épaisseur de l'ordre de 0,1 mm. On indiquera pour être complet, que la couche précédente formant 1 ' armature mécanique du tube est également un produit disponible sur le marché fabriqué par la même société et commercialisé sous l'appellation commerciale SNIAMID PSB 162 E. Son identification générique est PA6/6-36.The third layer according to the invention is a structural layer forming, so to speak, the mechanical reinforcement of the tube according to the invention. It is formed by a polyamide, for example a PA6 comprising an agent modifying impact resistance in a weight concentration of the order of 10 to 50% of the composition. This layer naturally adheres to the layer which is adjacent to it, that is to say the layer of EVOH by the very fact that it comprises a polyamide. We will choose its thickness at least equal to 0.3 mm and preferably between 0.3 to 0.6 mm. To perfect the tube, and in particular to increase its resistance to the external atmosphere, a last layer is applied to this reinforcing layer: this last layer is formed from a polyamide modified to resist zinc chloride. In fact, zinc chloride is an abundant compound in the snow removal salts of traffic routes. It has the effect of weakening the simple polyamide by hardening it and making it brittle. The modification consists essentially in producing a mixture of a polyamide copolymer such as PA6 and of a second thermoplastic polyamide or copolyamide comprising at least nine carbon atoms. This product is available on the market under the trade name SNIAMID PSB 162 D from the company RHODIA (ex company NYLTECH ITALIA). It is applied in a thickness of the order of 0.1 mm. It will be indicated to be complete, that the preceding layer forming the mechanical reinforcement of the tube is also a product available on the market manufactured by the same company and marketed under the trade name SNIAMID PSB 162 E. Its generic identification is PA6 / 6- 36.
A des fins de tests menés pour vérifier la réponse d'une telle structure aux exigences de tenue et de perméabilité en vigueur ou qui seront bientôt en vigueur dans le domaine de la construction automobile (tests mis au point par des constructeurs ou procédure CARB 95 niveau 2) , on a réalisé un échantillon de tubulure ayant les caractéristiques suivantes :For the purposes of tests carried out to verify the response of such a structure to the requirements for strength and permeability in force or which will soon be in force in the field of automobile construction (tests developed by manufacturers or CARB 95 level procedure 2), a tubing sample having the following characteristics was produced:
- couche interne en ORGALLOY LE 6000 d'une épaisseur égale à 0,45 mm,- internal layer in ORGALLOY LE 6000 with a thickness of 0.45 mm,
- première couche médiane en EVAL sous une épaisseur maximale de 0,15 mm,- first middle layer in EVAL with a maximum thickness of 0.15 mm,
- deuxième couche médiane ou couche d ' armature en SNIAMID PSB 162 E dans une épaisseur au moins égale à 0,3 mm,- second middle layer or reinforcement layer made of SNIAMID PSB 162 E in a thickness at least equal to 0.3 mm,
- et couche extérieure en SNIAMID PSB 162 D sous une épaisseur de 0,1 mm.- and outer layer in SNIAMID PSB 162 D with a thickness of 0.1 mm.
Cet échantillon a répondu de manière satisfaisante à toutes les exigences des tests ci-dessus mentionnés tant en ce qui concerne donc la perméabilité, la résistance et la tenue thermique dans une ambiance de compartiment moteur d'un véhicule automobile, la faible extractibilité du matériau de la conduite par le fluide transféré, et enfin la bonne résistance aux agents chimiques extérieurs tels que le chlorure de zinc.This sample satisfactorily met all the requirements of the above-mentioned tests, as regards therefore the permeability, the resistance and the thermal behavior in an engine compartment atmosphere of a motor vehicle, the low extractability of the material. conduct by the transferred fluid, and finally good resistance to external chemical agents such as zinc chloride.
En outre, la structure d'un tube selon l'invention présente l'avantage d'être de fabrication économique puisque chacune des couches est compatible avec les couches qui lui sont adjacentes sans avoir à recourir à des adhésifs intermédiaires. In addition, the structure of a tube according to the invention has the advantage of being economical to manufacture since each of the layers is compatible with the layers which are adjacent to it without having to resort to intermediate adhesives.

Claims

REVENDICATIONS
1. Tube en matière plastique multicouche destiné au transfert de fluide alcoolisé ou de carburant, dans l'environnement d'un moteur à combustion interne, caractérisé en ce qu'il comporte de l'intérieur vers1. A multilayer plastic tube intended for the transfer of alcoholic fluid or fuel, in the environment of an internal combustion engine, characterized in that it comprises from the inside towards
1 ' extérieur :1 'outside:
- une couche interne d'un mélange de polyamide et polyethylene ou de polypropylène, - une couche de polyvinylalcool,- an inner layer of a mixture of polyamide and polyethylene or polypropylene, - a layer of polyvinyl alcohol,
- une couche de polyamide comprenant un agent modificateur de la résistance aux chocs,- a polyamide layer comprising an agent modifying impact resistance,
- une couche externe à base de polyamide modifié pour résister au chlorure de zinc. - an outer layer based on polyamide modified to resist zinc chloride.
2. Tube selon la revendication 1, caractérisé en ce que les épaisseurs des différentes couches sont, depuis l'intérieur vers l'extérieur, respectivement d'environ 0,5mm ; 0,1 à 0,15mm ; 0,3 à 0,6mm ; 0,1mm.2. Tube according to claim 1, characterized in that the thicknesses of the different layers are, from the inside to the outside, respectively of about 0.5mm; 0.1 to 0.15mm; 0.3 to 0.6mm; 0.1mm.
3. Tube selon la revendication 1 ou la revendication 2, caractérisé en ce que la proportion pondérale entre polyamide et polyoléfine de la couche interne est d'environ 70/30. 3. Tube according to claim 1 or claim 2, characterized in that the weight proportion between polyamide and polyolefin of the inner layer is about 70/30.
EP00977645A 1999-11-19 2000-11-09 Multilayer pipe made of plastic material for transferring fluid such as fuel Withdrawn EP1237714A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9914592 1999-11-19
FR9914592A FR2801365B1 (en) 1999-11-19 1999-11-19 MULTI-LAYER PLASTIC PIPE FOR TRANSFER OF FUEL-TYPE FLUID
PCT/FR2000/003123 WO2001036187A1 (en) 1999-11-19 2000-11-09 Multilayer pipe made of plastic material for transferring fluid such as fuel

Publications (1)

Publication Number Publication Date
EP1237714A1 true EP1237714A1 (en) 2002-09-11

Family

ID=9552322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00977645A Withdrawn EP1237714A1 (en) 1999-11-19 2000-11-09 Multilayer pipe made of plastic material for transferring fluid such as fuel

Country Status (6)

Country Link
EP (1) EP1237714A1 (en)
AU (1) AU1528901A (en)
BR (1) BR0015560A (en)
FR (1) FR2801365B1 (en)
MX (1) MXPA02004949A (en)
WO (1) WO2001036187A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2876764B1 (en) * 2004-10-19 2007-01-05 Nobel Plastiques Soc Par Actio PO / ADHESIVE MULTILAYER TUBE / EVOH / PA / PROTECTIVE LAYER
DE102011089616A1 (en) * 2011-12-22 2013-06-27 Fränkische Industrial Pipes GmbH & Co. KG Multi-layer fuel line
FR3046826B1 (en) 2016-01-15 2018-05-25 Arkema France MULTILAYER TUBULAR STRUCTURE HAVING IMPROVED RESISTANCE TO EXTRACTION IN BIO-GASOLINE AND USE THEREOF

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469892A (en) * 1992-04-14 1995-11-28 Itt Automotive, Inc. Corrugated polymeric tubing having at least three layers with at least two respective layers composed of polymeric materials dissimilar to one another
DE9319880U1 (en) * 1993-12-23 1994-03-17 Ems-Inventa AG, Zürich Blow molded coolant line
ES2130759T3 (en) * 1995-03-09 1999-07-01 Atochem Elf Sa TUBE BASED ON POLYAMIDE FOR THE TRANSPORT OF GASOLINE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0136187A1 *

Also Published As

Publication number Publication date
AU1528901A (en) 2001-05-30
FR2801365A1 (en) 2001-05-25
BR0015560A (en) 2002-07-09
WO2001036187A1 (en) 2001-05-25
FR2801365B1 (en) 2002-06-14
MXPA02004949A (en) 2002-09-18

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