WO1997011300A1 - Flexible cooling water hose for motor vehicles - Google Patents

Flexible cooling water hose for motor vehicles Download PDF

Info

Publication number
WO1997011300A1
WO1997011300A1 PCT/EP1996/003812 EP9603812W WO9711300A1 WO 1997011300 A1 WO1997011300 A1 WO 1997011300A1 EP 9603812 W EP9603812 W EP 9603812W WO 9711300 A1 WO9711300 A1 WO 9711300A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling water
flexible cooling
motor vehicles
pvdf
layer
Prior art date
Application number
PCT/EP1996/003812
Other languages
German (de)
French (fr)
Inventor
Klaus Straszewski
Dietmar Roloff
Original Assignee
Siebe Fluid Systems Gmbh
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 Siebe Fluid Systems Gmbh filed Critical Siebe Fluid Systems Gmbh
Publication of WO1997011300A1 publication Critical patent/WO1997011300A1/en

Links

Classifications

    • 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
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard 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
    • B32B1/00—Layered products having a general shape other than plane
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • 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
    • 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
    • B32B2250/03—3 layers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses

Definitions

  • the invention relates to a flexible cooling water line for motor vehicles.
  • cooling water pipes for motor vehicles.
  • such cooling water lines are required to be resistant, in particular to glycol and other cooling water additives.
  • the cooling water pipes must have good resistance down to low temperature ranges of -40 ° C and high temperature ranges up to + 120 ° C.
  • the object of the invention is to create flexible cooling water pipes for motor vehicles which can be extruded from plastic.
  • an inner layer made of PVDF with simultaneous construction of the cooling water line from several plastic layers leads to a cooling water line which meets the high requirements. It proves to be particularly advantageous that the inner plastic layer made of PVDF is enclosed by an adhesion promoter layer, which essentially also consists of PVDF. The use of polyamide proves to be very helpful for the further outer layer.
  • the particularly preferred cooling water line has an inner layer made of PVDF and an outer layer made of PA 11 or PA 12. Between the outer layer and the inner layer, an adhesion promoter layer is provided which consists at least essentially of PVDF.
  • Such a flexible cooling water line proves to be suitable in long-term tests to meet all the high demands on flexible cooling water lines for motor vehicles. Adequate temperature resistance to low and high temperatures is achieved, and there is also sufficient resistance to glycol or other antifreezing agents or conventional cooling water additives. BRIEF DESCRIPTION OF THE DRAWING ILLUSTRATION
  • Figure 1 a longitudinal section through a three-layer flexible cooling water pipe, Figure 2 - a cross section along II-II in Figure 1.
  • the graphic representation is not to scale.
  • the three layers in the upper area of FIG. 1 are also of different lengths.
  • An inner layer 1 made of polyvinylidene fluoride (PVDF) preferably has a layer thickness of the order of 0.1 to 0.3 mm.
  • the inner layer 1 is enclosed by an adhesive layer 2, which at least essentially also consists of PVDF. In practice, their thickness is on the order of 0.05 to 0.15 mm.
  • An outer plastic layer is preferably made of polyamide in a thickness range of 0.7 to 1.5 mm. PA 11 and PA 12 have proven to be suitable.

Abstract

A hose for motor vehicles consists of several plastic layers (1; 2; 3), where the innermost one (1) is of polyvinylidene fluoride (PVDF). The innermost plastic layer (1) is preferably surrounded by a bonding agent (2) which also at least substantially consists of PVDF. The outer layer is preferably of polyamide 11 and polyamide 12.

Description

FLEXIBLE KÜHLWASSERLEITUNG FÜR KRAFTFAHRZEUGE FLEXIBLE COOLING WATER PIPE FOR MOTOR VEHICLES
TECHNISCHES GEBIETTECHNICAL AREA
Die Erfindung betrifft eine flexible Kühlwasserleitung für Kraftfahrzeuge .The invention relates to a flexible cooling water line for motor vehicles.
STAND DER TECHNIKSTATE OF THE ART
Bisher sind als flexible Kühlwasserleitungen für Kraft¬ fahrzeuge ausschließlich armierte Gummischlauche bekannt. Von derartigen Kühlwasserleitungen wird neben einer hohen Flexibilität eine Beständigkeit insbesondere auch gegen¬ über Glykol und anderen Kühlwasserzusätzen verlangt. Darüber hinaus müssen die Kühlwasserleitungen eine gute Beständigkeit bis in niedere Temperaturbereiche von -40°C und in hohe Temperaturbereiche bis +120°C aufweisen.So far, only reinforced rubber hoses are known as flexible cooling water pipes for motor vehicles. In addition to a high degree of flexibility, such cooling water lines are required to be resistant, in particular to glycol and other cooling water additives. In addition, the cooling water pipes must have good resistance down to low temperature ranges of -40 ° C and high temperature ranges up to + 120 ° C.
Diese Vorgaben haben dazu geführt, daß bisher ausschlie߬ lich armierte Gummischläuche als flexible Kühlwasserlei¬ tungen eingesetzt worden sind.These requirements have led to the fact that previously only reinforced rubber hoses have been used as flexible cooling water lines.
Die Herstellung von armierten Gummischläuchen zur Verwen¬ dung als Kühlwasserleitungen ist aufwendig und teuer. DIE ERFINDUNGThe production of armored rubber hoses for use as cooling water pipes is complex and expensive. THE INVENTION
Der Erfindung liegt die Aufgabe zugrunde, flexible Kühl¬ wasserleitungen für Kraftfahrzeuge zu schaffen, die aus Kunststoff extrudierbar sind.The object of the invention is to create flexible cooling water pipes for motor vehicles which can be extruded from plastic.
Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des Kennzeichnungsteils von Anspruch 1. Bevorzugte Ausfüh¬ rungsformen sind in den Unteransprüchen beschrieben.This object is achieved with the features of the characterizing part of claim 1. Preferred embodiments are described in the subclaims.
Das Vorsehen einer Innenschicht aus PVDF bei gleichzeiti¬ gem Aufbau der Kühlwasserleitung aus mehreren Kunststoff¬ schichten führt zu einer Kühlwasserleitung, die den hohen gestellten Anforderungen entspricht. Dabei erweist es sich als besonders vorteilhaft, daß die innere Kunststoff- schicht aus PVDF von einer Haftvermittlerschicht umschlos¬ sen ist, die im wesentlichen ebenfalls aus PVDF besteht. Für die weitere Außenschicht erweist sich die Verwendung von Polyamid als sehr hilfreich.The provision of an inner layer made of PVDF with simultaneous construction of the cooling water line from several plastic layers leads to a cooling water line which meets the high requirements. It proves to be particularly advantageous that the inner plastic layer made of PVDF is enclosed by an adhesion promoter layer, which essentially also consists of PVDF. The use of polyamide proves to be very helpful for the further outer layer.
Die besonders bevorzugte Kühlwasserleitung weist eine In¬ nenschicht aus PVDF auf und eine Außenschicht aus PA 11 oder PA 12. Zwischen Außenschicht und Innenschicht ist eine Haftvermittlerschicht vorgesehen, die zumindest im wesentlichen aus PVDF besteht. Eine solche flexible Kühl¬ wasserleitung erweist sich bei Dauerversuchen als geeig¬ net, alle hohen Ansprüche an flexible Kühlwasserleitungen für Kraftfahrzeuge zu erfüllen. So wird eine ausreichende Temperaturbeständigkeit gegen niedrige und hohe Tempera- turen erzielt, außerdem ergibt sich eine ausreichende Be¬ ständigkeit gegen Glykol oder andere Gefrierschutzmittel bzw. übliche Kühlwasserzusätze. KURZBESCHREIBUNG DER ZEICHNUNGSABBILDUNGThe particularly preferred cooling water line has an inner layer made of PVDF and an outer layer made of PA 11 or PA 12. Between the outer layer and the inner layer, an adhesion promoter layer is provided which consists at least essentially of PVDF. Such a flexible cooling water line proves to be suitable in long-term tests to meet all the high demands on flexible cooling water lines for motor vehicles. Adequate temperature resistance to low and high temperatures is achieved, and there is also sufficient resistance to glycol or other antifreezing agents or conventional cooling water additives. BRIEF DESCRIPTION OF THE DRAWING ILLUSTRATION
Nachstehend wird eine bevorzugte Ausführungsform der Er¬ findung anhand der Zeichnung im einzelnen erläutert. Es zeigen:A preferred embodiment of the invention is explained in detail below with reference to the drawing. Show it:
Figur 1 - einen Längsschnitt durch eine dreischichtige flexible Kühlwasserleitung, Figur 2 - einen Querschnitt entlang II-II in Figur 1.Figure 1 - a longitudinal section through a three-layer flexible cooling water pipe, Figure 2 - a cross section along II-II in Figure 1.
Die zeichnerische Darstellung ist nicht maßstabsgerecht. Zur Verdeutlichung sind außerdem die drei Schichten im oberen Bereich der Figur 1 unterschiedlich lang ausgebil¬ det.The graphic representation is not to scale. For clarification, the three layers in the upper area of FIG. 1 are also of different lengths.
BESTER WEG ZUR AUSFÜHRUNG DER ERFINDUNGBEST WAY TO CARRY OUT THE INVENTION
Eine Innenschicht 1 aus Polyvinylidenfluorid (PVDF) weist bevorzugt eine Schichtdicke in der Größenordnung von 0,1 bis 0,3 mm auf. Die Innenschicht 1 ist von einer Haftver¬ mittlerschicht 2 umschlossen, die zumindest im wesentli¬ chen ebenfalls aus PVDF besteht. Deren Dicke liegt in der Praxis in der Größenordnung von 0,05 bis 0,15 mm. Eine äußere Kunststoffschicht besteht bevorzugt aus Polyamid in einem Dickenbereich von 0,7 bis 1,5 mm. Als geeignet haben sich PA 11 und PA 12 erwiesen. An inner layer 1 made of polyvinylidene fluoride (PVDF) preferably has a layer thickness of the order of 0.1 to 0.3 mm. The inner layer 1 is enclosed by an adhesive layer 2, which at least essentially also consists of PVDF. In practice, their thickness is on the order of 0.05 to 0.15 mm. An outer plastic layer is preferably made of polyamide in a thickness range of 0.7 to 1.5 mm. PA 11 and PA 12 have proven to be suitable.

Claims

PATENTANSPRÜCHE: PATENT CLAIMS:
1. Flexible Kühlwasserleitung für Kraftfahrzeuge, dadurch gekennzeichnet, daß sie aus mehreren Kunststoffschichten (1; 2; 3), be¬ steht, deren innere (1) aus Polyvinylidenfluorid (PVDF) besteht.1. Flexible cooling water line for motor vehicles, characterized in that it consists of several plastic layers (1; 2; 3), the inner (1) of which consists of polyvinylidene fluoride (PVDF).
2. Flexible Kühlwasserleitung nach Anspruch 1, dadurch gekennzeichnet, daß die innere Kunststoffschicht (1) von einer Haftver¬ mittlerschicht (2) umschlossen ist, die im wesentlichen aus PVDF besteht.2. Flexible cooling water pipe according to claim 1, characterized in that the inner plastic layer (1) is surrounded by an adhesive layer (2) which consists essentially of PVDF.
3. Flexible Kühlwasserleitung, dadurch gekennzeichnet, daß die Haftvermittlerschicht (2) von einer weiteren Kunststoffschicht (3) umschlossen ist.3. Flexible cooling water pipe, characterized in that the adhesive layer (2) is enclosed by a further plastic layer (3).
4. Flexible Kühlwasserleitung nach Anspruch 3, dadurch gekennzeichnet, daß die weitere Kunststoffschicht (3) die Außenschicht ist.4. Flexible cooling water pipe according to claim 3, characterized in that the further plastic layer (3) is the outer layer.
5. Flexible Kühlwasserleitung nach Anspruch 4, dadurch gekennzeichnet, daß die weitere Kunststoffschicht (3) aus Polyamid (PA) besteht. 5. Flexible cooling water pipe according to claim 4, characterized in that the further plastic layer (3) consists of polyamide (PA).
6. Flexible Kühlwasserleitung nach Anspruch 5, dadurch gekennzeichnet, daß das Polyamid PA 11 ist.6. Flexible cooling water pipe according to claim 5, characterized in that the polyamide is PA 11.
7. Flexible Kühlwasserleitung nach Anspruch 5, dadurch gekennzeichnet, daß das Polyamid PA 12 ist. 7. Flexible cooling water pipe according to claim 5, characterized in that the polyamide is PA 12.
PCT/EP1996/003812 1995-09-23 1996-08-30 Flexible cooling water hose for motor vehicles WO1997011300A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995135489 DE19535489C2 (en) 1995-09-23 1995-09-23 Flexible cooling water pipe for motor vehicles
DE19535489.3 1995-09-23

Publications (1)

Publication Number Publication Date
WO1997011300A1 true WO1997011300A1 (en) 1997-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003812 WO1997011300A1 (en) 1995-09-23 1996-08-30 Flexible cooling water hose for motor vehicles

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WO (1) WO1997011300A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10311500A1 (en) * 2003-03-15 2004-09-30 Cooper-Standard Automotive (Deutschland) Gmbh Pipe, especially flexible cooling water pipe
GB2439337A (en) * 2006-06-19 2007-12-27 Glynwed Pipe Systems Ltd Multi-layered pipe for potable water
DE202011103017U1 (en) * 2011-07-08 2012-10-15 Rehau Ag + Co. Disinfection-resistant multi-layer composite pipe
DE202012104423U1 (en) * 2012-11-16 2014-02-17 Rehau Ag + Co. Flexible hose with a multi-layered wall
EP3482987B1 (en) * 2018-03-13 2020-05-13 TI Automotive (Fuldabrück) GmbH Use of a pipeline for tempering

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800109A (en) * 1986-02-01 1989-01-24 Usui Kokusai Sangyo Kabushiki Kaisha Flexible composite hose
EP0551094A1 (en) * 1992-01-06 1993-07-14 Pilot Industries, Inc. Fluoropolymer composite tube and method of preparation
FR2689956A1 (en) * 1992-03-30 1993-10-15 Tokai Rubber Ind Ltd A fuel transport pipe comprising a tube formed of resin layers, one of which contains fluorine, a resin tube for this pipe, and a method for its manufacture.
EP0637511A1 (en) * 1993-08-04 1995-02-08 Hüls Aktiengesellschaft Thermoplastic laminates
EP0637509A1 (en) * 1993-08-03 1995-02-08 Nitta Moore Company A tube for fuel transportation
DE29502264U1 (en) * 1995-02-13 1995-06-29 Tecalemit Gmbh Deutsche Multi-layer plastic tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2706814B2 (en) * 1989-05-29 1998-01-28 東海ゴム工業株式会社 Rubber laminate
DE4000434C2 (en) * 1990-01-09 1997-07-24 Inventa Ag Multi-layer flexible coolant line
DE4310884A1 (en) * 1993-04-02 1994-10-06 Huels Chemische Werke Ag Multi-layer plastic tube
DE4336290A1 (en) * 1993-10-25 1995-04-27 Huels Chemische Werke Ag Multi-layer plastic tube
DE4410148A1 (en) * 1994-03-24 1995-09-28 Huels Chemische Werke Ag Multi-layer plastic tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800109A (en) * 1986-02-01 1989-01-24 Usui Kokusai Sangyo Kabushiki Kaisha Flexible composite hose
EP0551094A1 (en) * 1992-01-06 1993-07-14 Pilot Industries, Inc. Fluoropolymer composite tube and method of preparation
FR2689956A1 (en) * 1992-03-30 1993-10-15 Tokai Rubber Ind Ltd A fuel transport pipe comprising a tube formed of resin layers, one of which contains fluorine, a resin tube for this pipe, and a method for its manufacture.
EP0637509A1 (en) * 1993-08-03 1995-02-08 Nitta Moore Company A tube for fuel transportation
EP0637511A1 (en) * 1993-08-04 1995-02-08 Hüls Aktiengesellschaft Thermoplastic laminates
DE29502264U1 (en) * 1995-02-13 1995-06-29 Tecalemit Gmbh Deutsche Multi-layer plastic tube

Also Published As

Publication number Publication date
DE19535489C1 (en) 1997-01-23
DE19535489C2 (en) 2003-08-21

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