DE202019101108U1 - Multi-layer composite pipe - Google Patents
Multi-layer composite pipe Download PDFInfo
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- DE202019101108U1 DE202019101108U1 DE202019101108.4U DE202019101108U DE202019101108U1 DE 202019101108 U1 DE202019101108 U1 DE 202019101108U1 DE 202019101108 U DE202019101108 U DE 202019101108U DE 202019101108 U1 DE202019101108 U1 DE 202019101108U1
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- composite pipe
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- layer composite
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 36
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000002318 adhesion promoter Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004760 aramid Substances 0.000 claims description 2
- 229920003235 aromatic polyamide Polymers 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 75
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- 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
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
-
- 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
- B32B2250/04—4 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
- B32B2250/05—5 or more 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Mehrschichtverbundrohr mit einer aus einem Polymer hergestellten Innenschicht, einer aus einem Polymer hergestellten Außenschicht und einer zwischen der Innen- und der Außenschicht eingelagerten, aus Metall hergestellten Zwischenschicht, dadurch gekennzeichnet, dass wenigstens eine weitere Schicht (3a,6) vorgesehen ist, die wenigstens eine Zugkräfte aufnehmende Faser (7) aufweist.Multi-layer composite pipe with an inner layer made of a polymer, an outer layer made of a polymer and an intermediate layer made of metal embedded between the inner and outer layers, characterized in that at least one further layer (3a, 6) is provided, which has at least one Has fiber (7) absorbing tensile forces.
Description
Die Erfindung betrifft ein Mehrschichtverbundrohr mit einer aus einem Polymer hergestellten Innenschicht, einer aus einem Polymer hergestellten Außenschicht und einer zwischen der Innen- und der Außenschicht eingelagerten, aus Metall hergestellten Zwischenschicht.The invention relates to a multilayer composite pipe with an inner layer made of a polymer, an outer layer made of a polymer and an intermediate layer made of metal embedded between the inner and the outer layer.
Mehrschichtverbundrohre dieser Art sind allgemein bekannt. Sie bestehen üblicherweise aus einer Innenschicht und einer Außenschicht, die jeweils aus einem Polymer hergestellt sind. Zwischen der Innenschicht und der Außenschicht ist eine Metallschicht eingelagert, die meistens aus Aluminium besteht. Dabei erfolgt die Verbindung von der Innen- und der Außenschicht mit der Metallschicht üblicherweise mittels einer Haftvermittlerschicht. Die Haftvermittlerschicht, die ebenfalls aus einem weiteren Polymer gebildet ist, kann ebenso wie die Innen- und die Außenschicht mittels Extrusion aufgebracht werden. Die haftvermittelnde Wirkung des weiteren Polymers beruht in der Regel auf aufgepfropften polaren Gruppen, wie Maleinsäureanhydrid.Multi-layer composite pipes of this type are generally known. They usually consist of an inner layer and an outer layer, which are each made of a polymer. A metal layer, which mostly consists of aluminum, is embedded between the inner layer and the outer layer. The connection between the inner and the outer layer with the metal layer usually takes place by means of an adhesion promoter layer. The adhesion promoter layer, which is likewise formed from a further polymer, can be applied by extrusion, as can the inner and outer layers. The adhesion-promoting effect of the further polymer is generally based on grafted-on polar groups, such as maleic anhydride.
Derartige Mehrschichtverbundrohre lassen sich durch eine geeignete Wahl des für die Innenschicht verwendeten Polymers grundsätzlich für viele Anwendungsbereiche einsetzen. Deshalb werden sie überwiegend in Heizungs- und Wasserversorgungsanlagen eingesetzt.Multi-layer composite pipes of this type can in principle be used for many areas of application by a suitable choice of the polymer used for the inner layer. That is why they are mainly used in heating and water supply systems.
Bei Mehrschichtverbundrohren dieser Art dient die Metallschicht, also insbesondere die Aluminiumschicht, zur Gewährleistung der Druckfestigkeit, der Formstabilität und der Diffusionsdichtheit der Mehrschichtverbundrohre. Aluminium ist allerdings ein relativ teurer Werkstoff. Außerdem macht diese Metallschicht die Mehrschichtverbundrohre je nach Wandstärke so unflexibel, dass die bisherigen Mehrschichtverbundrohre nicht für alle vorstellbaren Anwendungsbereiche geeignet sind.In multi-layer composite pipes of this type, the metal layer, in particular the aluminum layer, serves to ensure the pressure resistance, the dimensional stability and the diffusion tightness of the multi-layer composite pipes. However, aluminum is a relatively expensive material. In addition, this metal layer makes the multi-layer composite pipes, depending on the wall thickness, so inflexible that the previous multi-layer composite pipes are not suitable for all conceivable areas of application.
Aufgabe der Erfindung ist es, ein Mehrschichtverbundrohr so weiterzuentwicklen, dass es universeller einsetzbar ist.The object of the invention is to further develop a multilayer composite pipe so that it can be used more universally.
Diese Aufgabe wird bei einem Mehrschichtverbundrohr der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, dass wenigstens eine weitere Schicht vorgesehen ist, die wenigstens eine Zugkräfte aufnehmende Faser aufweist.This object is achieved according to the invention in a multilayer composite pipe of the type described in the introduction in that at least one further layer is provided which has at least one fiber absorbing tensile forces.
Durch diese zusätzliche weitere Schicht, die wenigstens eine Zugkräfte aufnehmende Faser aufweist, kann die Druckfestigkeit eines Mehrschichtverbundrohres erhöht werden, ohne dass die Biegesteifigkeit erhöht wird und ohne dass das Mehrschichtverbundrohr weniger flexibel wird. Dadurch kann das Mehrschichtverbundrohr auch für höhere Druckbereiche eingesetzt werden. Ohne diese zusätzliche Schicht müsste die Wanddicke der Metallschicht erhöht werden, was einerseits die Kosten erhöhen würde und andererseits das Mehrschichtverbundrohr extrem biegesteif und unflexibel machen würde. Auch für bisherige Anwendungen ist diese zusätzliche weitere Schicht vorteilhaft, da die Wandstärke der Aluminiumfolie reduziert werden kann, ohne dass die Druckfestigkeit verringert wird. Ein derartiges Mehrschichtverbundrohr ist flexibel und universell einsetzbar. Je nach Materialauswahl der Faser(n), der Wickelart, der Abstände der Fäden und der Dicke der Fäden kann das jeweilige Mehrschichtverbundrohr auf einfache Weise an den jeweiligen Anwendungszweck angepasst werden, ohne den Grundaufbau des Mehrschichtverbundrohres ändern zu müssen. Unter Faser im Sinne der Erfindung ist nicht nur eine einzelne Faser, sondern sind auch mehrere Fasern, Faserbänder, Gewebe und Multifilamente zu verstehen.This additional layer, which has at least one fiber that absorbs tensile forces, can increase the compressive strength of a multilayer pipe without increasing the bending stiffness and without making the multilayer pipe less flexible. This means that the multi-layer composite pipe can also be used for higher pressure ranges. Without this additional layer, the wall thickness of the metal layer would have to be increased, which on the one hand would increase the costs and on the other hand would make the multilayer composite pipe extremely rigid and inflexible. This additional layer is also advantageous for previous applications, since the wall thickness of the aluminum foil can be reduced without reducing the compressive strength. Such a multilayer composite pipe is flexible and universally applicable. Depending on the choice of material for the fiber (s), the type of winding, the spacing of the threads and the thickness of the threads, the respective multilayer pipe can be easily adapted to the respective application without having to change the basic structure of the multilayer pipe. Fiber in the sense of the invention is not only a single fiber, but also several fibers, fiber tapes, fabrics and multifilaments.
Grundsätzlich ist es z.B. aus
In bevorzugter Ausgestaltung ist vorgesehen, dass die Faser als Faserwicklung oder als Fasergeflecht ausgebildet ist. Die Art der geometrischen Ausgestaltung und Anordnung der Faser hängt vom jeweiligen Einsatzzweck ab.In a preferred embodiment it is provided that the fiber is designed as a fiber winding or as a fiber braid. The type of geometric design and arrangement of the fiber depends on the particular application.
Als Fasermaterial sind bevorzugt Carbon, Glas, Aramid und/oder Draht vorgesehen. Es kann auch ein Multifilament aus unterschiedlichen Fasern eingesetzt werden.Carbon, glass, aramid and / or wire are preferably provided as the fiber material. A multifilament made of different fibers can also be used.
Die Faser kann grundsätzlich je nach Einsatzzweck an beliebiger Stelle angeordnet sein. Nach einer ersten bevorzugten Ausgestaltung ist vorgesehen, dass die weitere Schicht eine Haftvermittlerschicht ist, in welche die Faser eingebettet ist. Die Faser ist dann innerhalb oder außerhalb der Metallschicht angeordnet.The fiber can basically be arranged at any point depending on the intended use. According to a first preferred embodiment it is provided that the further layer is an adhesion promoter layer in which the fiber is embedded. The fiber is then arranged inside or outside the metal layer.
Alternativ ist es auch möglich, dass die weitere Schicht die äußerste Schicht ist, d.h. die Faser bildet dann die Außenlage des Mehrschichtverbundrohres.Alternatively, it is also possible for the further layer to be the outermost layer, i.e. the fiber then forms the outer layer of the multilayer pipe.
Die Erfindung ist nachstehend anhand der Zeichnungen beispielhaft näher erläutert. Diese zeigen in
-
1 eine Seitenansicht eines Mehrschichtverbundrohrabschnittes nach einer ersten Ausgestaltung, -
2 einen Schnitt gemäß Linie II-II in1 , -
3 eine Seitenansicht eines Mehrschichtverbundrohrabschnittes nach einer zweiten Ausgestaltung und -
4 einen Schnitt gemäß Linie IV-IV in3 .
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1 2 shows a side view of a multilayer pipe section according to a first embodiment, -
2nd a section along line II-II in1 , -
3rd a side view of a multilayer pipe section according to a second embodiment and -
4th a section along line IV-IV in3rd .
Ein abschnittweise dargestelltes Mehrschichtverbundrohr ist in den Zeichnungen allgemein mit
Insoweit unterscheidet sich das Mehrschichtverbundrohr
Das Mehrschichtverbundrohr
In den
Dieses Mehrschichtverbundrohr
Alternativ kann auch zwischen der Innenschicht
BezugszeichenlisteReference list
- 11
- MehrschichtverbundrohrMulti-layer composite pipe
- 22nd
- InnenschichtInner layer
- 3, 3a3, 3a
- HaftvermittlerschichtAdhesion promoter layer
- 44th
- ZwischenschichtIntermediate layer
- 55
- AußenschichtOuter layer
- 66
- Weitere SchichtAnother shift
- 77
- Faserfiber
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 202008002386 U1 [0008]DE 202008002386 U1 [0008]
Claims (5)
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DE202019101108.4U DE202019101108U1 (en) | 2019-02-27 | 2019-02-27 | Multi-layer composite pipe |
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DE202019101108.4U DE202019101108U1 (en) | 2019-02-27 | 2019-02-27 | Multi-layer composite pipe |
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DE202019101108U1 true DE202019101108U1 (en) | 2020-05-28 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10995884B1 (en) | 2019-03-26 | 2021-05-04 | Titeflex Corporation | Multilayer composite pipe and pipe assemblies including reflective insulation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008002386U1 (en) | 2008-02-20 | 2009-07-02 | Rehau Ag + Co | Composite pipe with a tube of cross-linked polyethylene |
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2019
- 2019-02-27 DE DE202019101108.4U patent/DE202019101108U1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008002386U1 (en) | 2008-02-20 | 2009-07-02 | Rehau Ag + Co | Composite pipe with a tube of cross-linked polyethylene |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10995884B1 (en) | 2019-03-26 | 2021-05-04 | Titeflex Corporation | Multilayer composite pipe and pipe assemblies including reflective insulation |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification | ||
R081 | Change of applicant/patentee |
Owner name: WRW PIPES GMBH, DE Free format text: FORMER OWNER: WRW WESTFAELISCHE ROHRWERKE GMBH, 59227 AHLEN, DE |
|
R082 | Change of representative |
Representative=s name: PATENT- UND RECHTSANWAELTE MEINKE, DABRINGHAUS, DE |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |