DE9203865U1 - High-pressure hose and media-resistant inner part thereof - Google Patents
High-pressure hose and media-resistant inner part thereofInfo
- Publication number
- DE9203865U1 DE9203865U1 DE9203865U DE9203865U DE9203865U1 DE 9203865 U1 DE9203865 U1 DE 9203865U1 DE 9203865 U DE9203865 U DE 9203865U DE 9203865 U DE9203865 U DE 9203865U DE 9203865 U1 DE9203865 U1 DE 9203865U1
- Authority
- DE
- Germany
- Prior art keywords
- polyamide
- layer
- pressure hose
- inner part
- media
- 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.)
- Expired - Lifetime
Links
- 239000004952 Polyamide Substances 0.000 claims description 30
- 229920002647 polyamide Polymers 0.000 claims description 30
- 229920002292 Nylon 6 Polymers 0.000 claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 14
- 239000000806 elastomer Substances 0.000 claims description 14
- 229920000299 Nylon 12 Polymers 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 8
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 7
- 229920000571 Nylon 11 Polymers 0.000 claims description 4
- 239000002318 adhesion promoter Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 2
- 229920001112 grafted polyolefin Polymers 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 38
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920006659 PA12 Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920003620 Grilon® Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920003724 Grilamid® L 25 W 40 Polymers 0.000 description 1
- 239000004609 Impact Modifier Substances 0.000 description 1
- 229920004482 WACKER® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Description
BeschreibungDescription
Die Erfindung betrifft den in den Schutzansprüchen angegebenen Gegenstand.The invention relates to the subject matter specified in the claims.
Die Erfindung betrifft insbesondere einen Hochdruckschlauch für flüssige oder gasförmige Medien, der aus einem gegen diese Medien resistenten Innenteil und einem an sich bekannten druckresistenten Aussenteil aufgebaut ist.The invention particularly relates to a high-pressure hose for liquid or gaseous media, which is constructed from an inner part resistant to these media and a pressure-resistant outer part known per se.
Solche Hochdruckschläuche finden Verwendung als Drucküberträger für Hydrauliköle, für die Führung von Dämpfen für Heiz- und Kühlaggregate, insbesondere für Medien für Aggregatzustandsänderungen z.B. Freon und zum Transport von Gasen wie Helium, Wasserstoff, Sauerstoff oder Luft z.B. in Tauchgeräten. Die Förderung der vorerwähnten Flüssigkeiten oder Gase in medienführenden Leitungssystemen verlangt hinsichtlich der Werkstoffwahl in der Regel einen Kompromiß.Such high-pressure hoses are used as pressure transmitters for hydraulic oils, for the transport of vapors for heating and cooling units, in particular for media for changes in state of aggregation, e.g. Freon, and for the transport of gases such as helium, hydrogen, oxygen or air, e.g. in diving equipment. The transport of the aforementioned liquids or gases in media-carrying line systems usually requires a compromise with regard to the choice of material.
Die Erfindung geht von einem an sich bekannten, druckresistenten Außenteil sowie von einem neuentwickelten mehrschichtigen Kunststoffrohr als dem Innenteil solcher Hochdruckschläuche aus.The invention is based on a known, pressure-resistant outer part and on a newly developed multi-layer plastic tube as the inner part of such high-pressure hoses.
Nach dem Stand der Technik werden solche Innenteile aus technischen Thermoplasten wie PA6, PA12 oder Polyamidelastomeren wie Hytrel ^ hergestellt. Je nach Anwendung werden von diesen Materialien gute chemische Beständigkeit oder Barrierewirkung gegen die zu transportierenden Medien verlangt. Dabei ist es notwendig, daß, wie schon erwähnt ist, erhebliche Kompromisse zwischen Flexibilität, chemischer Beständigkeit und BarrierewirkungAccording to the state of the art, such internal parts are made of technical thermoplastics such as PA6, PA12 or polyamide elastomers such as Hytrel ^. Depending on the application, these materials are required to have good chemical resistance or a barrier effect against the media to be transported. As already mentioned, it is necessary to make considerable compromises between flexibility, chemical resistance and barrier effect
gemacht werden müssen.must be made.
Die Aufgabe der Erfindung ist es daher, einen Hochdruckschlauch mit einem neuartigen, medienresistenten Innenteil zur Verfügung zu stellen, mit dem die oben beschriebenen Nachteile des Standes der Technik überwunden werden.The object of the invention is therefore to provide a high-pressure hose with a novel, media-resistant inner part, with which the disadvantages of the prior art described above are overcome.
Diese Aufgabe wird durch den Hochdruckschlauch mit den kennzeichnenden Merkmalen des Anspruchs lf den Hochdruckschlauch mit den kennzeichnenden Merkmalen des Anspruchs 8 bzw. dem medienresistenten Innenteil mit den kennzeichnenden Merkmalen des Anspruchs 9 gelöst.This object is achieved by the high-pressure hose with the characterizing features of claim 1 , the high-pressure hose with the characterizing features of claim 8 or the media-resistant inner part with the characterizing features of claim 9.
Die erfindungsgemäßen Hochdruckschläuche lassen durch den Einsatz von mehrlagigen Polyamid-Rohren als innenteil die hohen unterschiedlichen Materialanforderungen in vorteilhafter Weise, ohne negative Beeinflussung untereinander, vereinen. Solche mehrlagigen Polyamid-Rohre bestehen aus mindestens einer Polyamid-Innenschicht und mindestens einer Polyamid-Aussenschicht.The high-pressure hoses according to the invention allow the high, different material requirements to be combined in an advantageous manner without negatively influencing one another by using multi-layer polyamide tubes as the inner part. Such multi-layer polyamide tubes consist of at least one polyamide inner layer and at least one polyamide outer layer.
Als Polyamide eignen sich für die Innen- und/oder die Aussenschicht alle gängigen schlagzähmodifizierten oderAll common impact-modified or
schlagzähmodifikatorfreien und/oder weichmacherhaltigen oder
nicht weichgemachten Homo- und Copolyamide einschließlich der elastomeren Copolyamide. Bevorzugt sind jedoch Polyamid
6, Polyamid 11, Polyamid 12.
30Homo- and copolyamides, including elastomeric copolyamides, which contain no impact modifiers and/or contain plasticizers or are not plasticized. However, polyamide 6, polyamide 11 and polyamide 12 are preferred.
30
Die erfindungsgemäßen mehrlagigen Polyamid-Rohre können in einer besonderen Ausführungsform mindestens eine Zwischenschicht enthalten, die aus Polymeren mit spezifischen Eigenschaften besteht und beispielsweise eine besonders gute Haftvermittlung zwischen Innen- undThe multilayer polyamide pipes according to the invention can, in a special embodiment, contain at least one intermediate layer which consists of polymers with specific properties and, for example, provides particularly good adhesion between the inner and outer layers.
Aussenschicht und/oder eine spezielle Barriere-Wirkung schafft. Damit sollen folgende Probleme vermieden werden:outer layer and/or creates a special barrier effect. This is intended to avoid the following problems:
Beispielsweise ergibt sich bei Zwischenschichten aus Ethylen/Vinylalkohol-Copolymeren, die mit Polyamid 11- oder 12-Schichten verbunden sind, das Problem, daß die Haftung zwischen diesen Schichten gering ist, so daß sie leicht delaminieren. Auch im Fall einerFor example, with intermediate layers made of ethylene/vinyl alcohol copolymers bonded to polyamide 11 or 12 layers, the problem arises that the adhesion between these layers is low, so that they easily delaminate. Even in the case of a
Polyethylen-Vinylalkohol-Copolymerinnenschicht, die mit thermoplastischen Polyesterelastomeren verbunden ist, besteht zwischen den Schichten ebenfalls nur eine geringe Haftung, so daß diese leicht delaminieren.Polyethylene-vinyl alcohol copolymer inner layer, which is bonded to thermoplastic polyester elastomers, there is also only a low adhesion between the layers, so that they delaminate easily.
Die erfindungsgemäß verwendete Zwischenschicht kann eine Sperrschicht aus der Gruppe der Homo- oder Copolyolefine, gepfropfte Homopolyolefine, Ethylen-Vinylalkohol-Copolymere, elastomere Polyamid-Copolymere oder aus deren Blends mit Polyolefinelastomeren sein.The intermediate layer used according to the invention can be a barrier layer from the group of homo- or copolyolefins, grafted homopolyolefins, ethylene-vinyl alcohol copolymers, elastomeric polyamide copolymers or from their blends with polyolefin elastomers.
Die erfindungsgemäßen Hochdruckschläuche können in speziellen Ausführungsformen mit einem innenteil, das speziell gegen Medien aus der Gruppe Alkohole, Wasser, Freon, Aromaten resistent ist, ausgerüstet werden.The high-pressure hoses according to the invention can, in special embodiments, be equipped with an inner part that is specifically resistant to media from the group of alcohols, water, freon, aromatics.
p{jr Freonschläuche hat sich eine Zwischenschicht aus einem Polyamidelastomer, beispielsweise einem elastomeren Copolyamid (Typ ELY 60 ^ oder ELX23NZ, EMS-CHEMIE AG, Zürich) bewährt. For Freon hoses, an intermediate layer made of a polyamide elastomer, for example an elastomeric copolyamide (type ELY 60 ^ or ELX23NZ, EMS-CHEMIE AG, Zurich), has proven to be effective.
p{jr Hochdruck-Farbspritzschläuche mit einer Innenschicht aus Polyamid 12 und einer Aussenschicht aus Polyamid 6 eignen sich ausgesuchte Haftvermittler auf Basis von Polyolefinen wie mit funktionellen Gruppen versehene Homo- oder Copolyolefine, die zugleich auch als Feuchtigkeitssperre wirken.p{j r High-pressure paint spray hoses with an inner layer made of polyamide 12 and an outer layer made of polyamide 6 are suitable for selected adhesion promoters based on polyolefins such as homo- or copolyolefins with functional groups, which also act as a moisture barrier.
Zur Verbesserung der Hafteigenschaften einer Zwischenschicht aus Ethylen-Vinylalkohol-Copolymeren mit Polyamid ist eine zusätzliche Zwischenschicht aus einem Polyamidelastomeren, z.B. einem elastomeren Copolyamid aus der Gruppe der Polyetherpolyamide oder Polyetheresterpolyamide besonders vorteilhaft.To improve the adhesive properties of an intermediate layer made of ethylene-vinyl alcohol copolymers with polyamide, an additional intermediate layer made of a polyamide elastomer, e.g. an elastomeric copolyamide from the group of polyether polyamides or polyether ester polyamides, is particularly advantageous.
Der wesentliche Bestandteil der erfindungsgemäßen Hochdruckschläuche ist somit ein medienresistentes Innenteil aus einem mehrlagigen Polyamid-Rohr aus mindestens einer Polyamid-Innen- und mindestens einer Polyamid-Aussenschicht, das gegebenenfalls zusätzlich mindestens eine Zwischenschicht mit Barriere-Funktion sowie wahlweise !5 mindestens eine Schicht mit Haftfunktion enthält.The essential component of the high-pressure hoses according to the invention is thus a media-resistant inner part made of a multi-layer polyamide tube made of at least one polyamide inner layer and at least one polyamide outer layer, which optionally additionally contains at least one intermediate layer with a barrier function and optionally at least one layer with an adhesive function.
Mehrschichtige Polyamid-Rohre als Innenteile der erfindungsgemäßen Hochdruckschläuche, die durch Koextrusion hergestellt sind, lösen in hervorragender Weise die Aufgabentrennung zwischen Flexibilität, Barriere und chemischer Beständigkeit. Damit sind erheblich kostengünstigere und kompromisslose Lösungen möglich, als sie nach dem Stand der Technik bekannt sind.Multilayer polyamide tubes as inner parts of the high-pressure hoses according to the invention, which are manufactured by coextrusion, solve the task separation between flexibility, barrier and chemical resistance in an excellent way. This makes considerably more cost-effective and uncompromising solutions possible than those known from the state of the art.
Beispiele für den Schichtaufbau solcher Innenteile sind Polyamid 6 als Innenschicht, Polyamidelastomer als Aussenschicht und durch Pfropfung mit funktioneilen Gruppen versehenes Polyolefin oder ein Ethylen-Vinylalkohol-Copolymer als Zwischenschicht.Examples of the layer structure of such internal parts are polyamide 6 as the inner layer, polyamide elastomer as the outer layer and polyolefin grafted with functional groups or an ethylene-vinyl alcohol copolymer as the intermediate layer.
Die folgenden Beispiele erläutern die Erfindung, ohne sie einzuschränken.The following examples illustrate the invention without limiting it.
Innenteil für PreonschlauchInner part for Preon hose
Innenschicht Polyamid 6,Inner layer polyamide 6,
mittelviskos, schlagzahmodifiziert 0,1 mm
Zwischenschicht Polypropylen mit
funktioneilen Gruppen 0,1 mmmedium viscosity, impact modified 0.1 mm interlayer polypropylene with
functional groups 0.1 mm
Aussenschicht Polyamid-6-Elastomer 0,8 mmOuter layer polyamide 6 elastomer 0.8 mm
Innenteil für Freonschlauch
15Inner part for freon hose
15
Innenschicht Polyamid 6,Inner layer polyamide 6,
mittelviskos, schlagzahmodifiziert 0,05 mmmedium viscosity, impact modified 0.05 mm
Zwischenschicht Ethylen-Vinylalkohol-Copolymer 0,05 mmIntermediate layer ethylene-vinyl alcohol copolymer 0.05 mm
Außenschicht Polyamid-6-Elastomer 0,9 mmOuter layer polyamide 6 elastomer 0.9 mm
Beispiel 3
Innenteil für Hochdruck-Farbspritzschläuche Example 3
Inner part for high-pressure paint spray hoses
Innenschicht Polyamid 12, mittelviskos, weichmacherhaltig 0,2 mmInner layer polyamide 12, medium viscosity, plasticized 0.2 mm
Zwischenschicht-Haftvermittler XE 3153 0,1 mm Aussenschicht Polyamid 6, mittelviskos, schlagzahmodifiziert, weichmacherhaltig 0,7 mmInterlayer adhesion promoter XE 3153 0.1 mm Outer layer polyamide 6, medium viscosity, impact modified, plasticizer-containing 0.7 mm
Beispiel 4
innenteil für Atmungsschläuche für Tauchausrüstung Example 4
inner part for breathing hoses for diving equipment
Innenschicht Polyamid 12, mittelviskos,Inner layer polyamide 12, medium viscosity,
weichmacherhaltig 0,05 mmplasticized 0.05 mm
Zwischenschicht-Haftvermittler PP (Polypropylen) 0,1 mmInterlayer adhesion promoter PP (polypropylene) 0.1 mm
Aussenschicht Polyamid 6 Elastomer 0,85 mmOuter layer polyamide 6 elastomer 0.85 mm
Beispiele für die eingesetzten Polymere sind:Examples of the polymers used are:
PA6, mittelviskos, schlagzähmodifiziert, Grilon A28NZ Ems-Chemie AG;PA6, medium viscosity, impact modified, Grilon A28NZ Ems-Chemie AG;
PA6, mittelviskos, schlagzähmodifiziert, weichmacherhaltig, Grilon XE 3289, Ems-Chemie AG;PA6, medium viscosity, impact modified, contains plasticizer, Grilon XE 3289, Ems-Chemie AG;
PA6, Elastomer Grilamid ELX23NZ. Ems-Chemie AG; PA12, Elastomer Grilamid ELY60 W Ems-Chemie AG; PA12, mittelviskos, weichmacherhaltig: Grilamid L25W40 Ems-Chemie AG;PA6, elastomer Grilamid ELX23NZ. Ems-Chemie AG; PA12, elastomer Grilamid ELY60 W Ems-Chemie AG; PA12, medium viscosity, plasticizer-containing: Grilamid L25W40 Ems-Chemie AG;
Polypropylen mit funktioneilen Gruppen versehen: Admer QF500E, Mitsui Chemicals;Polypropylene with functional groups: Admer QF500E, Mitsui Chemicals;
Ethylen-Vinylalkohol-Copolymere der Firmen: Esso, Wacker und Solvay.Ethylene-vinyl alcohol copolymers from the companies: Esso, Wacker and Solvay.
Claims (11)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9203865U DE9203865U1 (en) | 1992-03-23 | 1992-03-23 | High-pressure hose and media-resistant inner part thereof |
| FR9303266A FR2688858B3 (en) | 1992-03-23 | 1993-03-22 | FLEXIBLE HOSE FOR HIGH PRESSURE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9203865U DE9203865U1 (en) | 1992-03-23 | 1992-03-23 | High-pressure hose and media-resistant inner part thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9203865U1 true DE9203865U1 (en) | 1992-10-01 |
Family
ID=6877551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9203865U Expired - Lifetime DE9203865U1 (en) | 1992-03-23 | 1992-03-23 | High-pressure hose and media-resistant inner part thereof |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE9203865U1 (en) |
| FR (1) | FR2688858B3 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0638749A1 (en) * | 1993-08-09 | 1995-02-15 | Victaulic Plc | Improvements in or relating to pipes |
| EP0659534A2 (en) * | 1993-12-23 | 1995-06-28 | Ems-Inventa Ag | Coolant hose |
| FR2720472A1 (en) * | 1994-05-31 | 1995-12-01 | Hutchinson | Fuel transport hose. |
| EP1036968A1 (en) | 1999-03-16 | 2000-09-20 | Atofina | Fuel transport tube having multiple layers based on polyamide |
| US7348046B2 (en) | 2004-06-16 | 2008-03-25 | Ems-Chemie Ag | Polymer mixture of aliphatic polyamides and partially aromatic polyamides, moulded articles thereof and use thereof |
| DE10137863B4 (en) * | 2000-08-02 | 2009-10-15 | Saint Gobain Performance Plastics Corp. | Laminated polyamide air brake hose |
Families Citing this family (5)
| 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 |
| US5960977A (en) * | 1998-05-14 | 1999-10-05 | Itt Manufacturing Enterprises, Inc. | Corrugated polymeric filler neck tubing |
| US6240970B1 (en) | 1999-04-01 | 2001-06-05 | Itt Manufacturing Enterprises, Inc. | Tubing for handling hydrocarbon materials and having an outer jacket layer adhered thereto |
| US6276400B1 (en) | 1999-06-08 | 2001-08-21 | Itt Manufacturing Enterprises, Inc. | Corrosion resistant powder coated metal tube and process for making the same |
| FR2841630B1 (en) * | 2002-07-01 | 2004-08-06 | Atofina | FLEXIBLE POLYAMIDE PIPES FOR COMPRESSED AIR |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4001126C1 (en) * | 1989-11-20 | 1990-12-13 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | |
| DE4001125C1 (en) * | 1989-11-20 | 1990-12-13 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | |
| DE3942354A1 (en) * | 1989-12-21 | 1991-06-27 | Tecalemit Gmbh Deutsche | Multilayer reinforced plastic hose for inflammable fluids - has layers contg. foaming agent and flame retardant for safety |
| DE3942353A1 (en) * | 1989-12-21 | 1991-06-27 | Tecalemit Gmbh Deutsche | Strong, flexible laminar thermoplastic pipe - has innermost impervious lining bonded to mechanically strong layer, then braiding for reinforcement, and outermost thermoplastic sleeve |
-
1992
- 1992-03-23 DE DE9203865U patent/DE9203865U1/en not_active Expired - Lifetime
-
1993
- 1993-03-22 FR FR9303266A patent/FR2688858B3/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4001126C1 (en) * | 1989-11-20 | 1990-12-13 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | |
| DE4001125C1 (en) * | 1989-11-20 | 1990-12-13 | Technoform Caprano + Brunnhofer Kg, 3501 Fuldabrueck, De | |
| DE3942354A1 (en) * | 1989-12-21 | 1991-06-27 | Tecalemit Gmbh Deutsche | Multilayer reinforced plastic hose for inflammable fluids - has layers contg. foaming agent and flame retardant for safety |
| DE3942353A1 (en) * | 1989-12-21 | 1991-06-27 | Tecalemit Gmbh Deutsche | Strong, flexible laminar thermoplastic pipe - has innermost impervious lining bonded to mechanically strong layer, then braiding for reinforcement, and outermost thermoplastic sleeve |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0638749A1 (en) * | 1993-08-09 | 1995-02-15 | Victaulic Plc | Improvements in or relating to pipes |
| EP0659534A2 (en) * | 1993-12-23 | 1995-06-28 | Ems-Inventa Ag | Coolant hose |
| EP0659534A3 (en) * | 1993-12-23 | 1995-11-29 | Inventa Ag | Coolant hose. |
| US5560398A (en) * | 1993-12-23 | 1996-10-01 | Ems-Inventa Ag | Sequentially coextruded coolant conduit |
| FR2720472A1 (en) * | 1994-05-31 | 1995-12-01 | Hutchinson | Fuel transport hose. |
| EP0685674A1 (en) * | 1994-05-31 | 1995-12-06 | Hutchinson | Fuel conducting pipe |
| US5799704A (en) * | 1994-05-31 | 1998-09-01 | Andre; Maxime | Pipe for conveying fuel |
| EP1036968A1 (en) | 1999-03-16 | 2000-09-20 | Atofina | Fuel transport tube having multiple layers based on polyamide |
| DE10137863B4 (en) * | 2000-08-02 | 2009-10-15 | Saint Gobain Performance Plastics Corp. | Laminated polyamide air brake hose |
| US7348046B2 (en) | 2004-06-16 | 2008-03-25 | Ems-Chemie Ag | Polymer mixture of aliphatic polyamides and partially aromatic polyamides, moulded articles thereof and use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2688858A3 (en) | 1993-09-24 |
| FR2688858B3 (en) | 1994-03-04 |
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