EP2850352A1 - Hose line, in particular for diving equipment - Google Patents

Hose line, in particular for diving equipment

Info

Publication number
EP2850352A1
EP2850352A1 EP13719401.5A EP13719401A EP2850352A1 EP 2850352 A1 EP2850352 A1 EP 2850352A1 EP 13719401 A EP13719401 A EP 13719401A EP 2850352 A1 EP2850352 A1 EP 2850352A1
Authority
EP
European Patent Office
Prior art keywords
layer
hose line
line according
base layer
hose
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Withdrawn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
EP13719401.5A
Other languages
German (de)
French (fr)
Inventor
Jörg Müller
Erdal Yücel
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2850352A1 publication Critical patent/EP2850352A1/en
Withdrawn legal-status Critical Current

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
    • F16L11/04—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
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151—Coating hollow articles
    • B29C48/152—Coating hollow articles the inner surfaces thereof
    • B29C48/153—Coating both inner and outer surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2883—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of preformed parts, e.g. inserts fed and transported generally uninfluenced through the extruder or inserts fed directly to the die

Definitions

  • Hose line especially for diving equipment
  • the invention relates to a hose, in particular for diving equipment, with
  • a reinforced hose for diving equipment is for example from the
  • the tube described therein has an inner layer of polyethylene or polyurethane, on which a closed reinforcing layer of polyester threads is applied. This reinforcing layer is in turn surrounded by another full-surface layer of nylon threads, which protect the
  • a hose with the features described above is known for example from US 2,143,852.
  • the open reinforcement layer here forms a separate layer between inner tube and sheath.
  • the threads of the reinforcing layer can move uncontrollably, so that there is a permanent shift of the reinforcing threads and thus a weakening of the Arm michslage.
  • this hose tends to early failure under a dynamic load.
  • the invention has for its object to provide a hose with the features described above, which durable dynamic alternating stresses withstands, the Arm michslage is well protected against mechanical damage and also has a high flexibility.
  • the object is achieved in that the base layer is composed of at least two seamlessly co-extruded sub-layers and the reinforcing layer is extruded between these two sub-layers.
  • the invention is based on the finding that the object described can be achieved in a simple and inexpensive manner by a departure from the classical layer structure "inner layer - reinforcing layer - outer layer.”
  • the reinforcing layer is integrated into the base layer, which is constructed from two plastic sublayers during the
  • the two partial layers consist of the same material or of the combination of materials polyurethane / nitrile rubber. Between these two partial layers, the reinforcing layer is extruded and is thus effectively protected against mechanical damage from the outside.
  • the seamless connection between the two partial layers takes place in the free spaces of the open reinforcement layer and ensures an excellent fixation of the reinforcement layer within the base layer. Due to the open structure of the reinforcing layer a very good flexibility of the hose according to the invention is ensured.
  • the two partial layers consisting of the same material are intimately connected by the coextrusion process, so that a compact monolayer base layer is created, in which the two partial layers seamlessly merge.
  • the hose according to the invention is also distinguished by the fact that it is ecologically harmless, since no adhesive is required for its production.
  • the reinforcing layer is composed of a plurality of threads, which only intersect overlappingly and thereby form free spaces in which the partial layers merge seamlessly with one another. It is therefore deliberately dispensed with elaborate braiding or tissue production.
  • the reinforcing layer is composed of at least two partial layers, wherein a partial position consists of mutually parallel threads.
  • the threads of both overlapping partial layers are aligned obliquely to the tube axis and in this case form diagonal lines which preferably enclose an angle of 44 to 64 °, in particular 50 to 58 °, with the tube longitudinal axis.
  • the counter-rotating, overlapping and open reinforcement layer according to the invention is enclosed in the base layer and yet flexible.
  • the reinforcing layer consists of polyester.
  • the base layer is encased by an outer layer, preferably made of polyamide. This is expediently constructed of braided threads.
  • the outer layer protects the base layer against abrasion. It is essential that the outer layer or the threads of the outer layer are not in direct contact with the Arm michslage and thus even with a complete abrasion of the outer layer, the Arm michslage is protected by the outer sub-layer of the base layer.
  • the base layer may consist of polyurethane, polyethylene or the combination of materials polyurethane / nitrile rubber, e.g. in that the inner part layer is made of polyurethane and the outer part layer is made of nitrile rubber or vice versa.
  • the reinforcing layer is in the outer half, e.g. arranged in the outer third of the base layer.
  • the outer sub-layer and / or the inner sub-layer of the base layer is transparent.
  • Transparent means transparent or translucent. The transparency facilitates the control of the manufacturing process of the base layer with the single extrusion of the reinforcement layer between the two partial layers.
  • the outer sub-layer is colored by means of color pigments. This allows a great variety of colors in a simple way, provided that the outer layer has an open structure, is transparent or absent.
  • the hose according to the invention is particularly suitable for use in diving equipment in which high mechanical loads in both static and dy- Sea are to cope.
  • the hose can be connected to a compressed air cylinder and serve to supply the diver with air.
  • FIG. 1 shows a cross section through a hose line according to the invention
  • Fig. 2 is a side view of the hose shown in Fig. 1.
  • Fig. 1 shows a hose line, which is used in particular for diving equipment. It has a base layer 1 and an open reinforcement layer 2. From Fig. 1 it can be seen that the base layer 1 of two seamlessly with each other
  • coextruded partial layers 3, 3 ' is constructed and the reinforcing layer 2 is extruded between these two sub-layers 3, 3'.
  • the seamless transition between the inner sub-layer 3 and the outer sub-layer 3 ' is indicated by a thin dashed line r.
  • the two partial layers 3, 3 ' consist of the combination of materials polyurethane (inner partial layer 3) and nitrile rubber (outer partial layer 3').
  • the reinforcing layer 2 is made up of a plurality of reinforcing threads 4, 4 ', which intersect only overlappingly and thereby form free spaces 5, in which the partial layers 3, 3' merge seamlessly into one another.
  • FIG. 2 also shows that the reinforcing layer 2 is made up of two partial layers 6, 6 ', with one partial layer 6 or 6' each consisting of parallel arranged, mutually spaced reinforcing threads 4 or 4 '.
  • the reinforcing threads 4, 4 'of both overlapping partial layers 6, 6' are aligned obliquely to the tube longitudinal axis x and in this case form diagonal lines 7, 7 '. These include with the tube longitudinal axis x an angle ⁇ of 44 to 64 °, for example 50 to 58 °, a.
  • the reinforcing threads 4, 4 'arranged spirally around the tube axis x are made of polyester.
  • FIGS. 1 and 2 A comparative consideration of FIGS. 1 and 2 can also be seen that the base layer 1 is surrounded by an existing of polyamide outer layer 8. This is constructed from braided threads, not shown.
  • the base layer 1 in the exemplary embodiment is completely transparent, ie both inner sub-layer 3 and outer sub-layer 3 '.
  • the inner diameter d, the tubing formed from the inside of the base layer 1 is 4 to 8, for example, 5 to 7 mm.
  • the layer thickness s (d a - dj) / 2 of the base layer 1 is 2 to 5 mm, for example 3 to 4 mm.
  • the axial distance I between two reinforcing threads 4, 4 'belonging to the same sub-layer 6, 6' is 0.5 to 3 mm, for example 1 to 2 mm.
  • the area size of the individual free spaces 5 formed by the reinforcing threads 4, 4 'in which the two partial layers 3, 3' merge seamlessly into each other is at least 0.5 mm 2 , preferably at least 1 mm 2 , on the other hand the area size ⁇ 5 mm 2 is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention relates to a hose line, in particular for diving equipment, having at least one base layer (1), and at least one open reinforcement layer (2). According to the invention, the base layer (1) is constructed of at least two sublayers (3, 3') that are seamlessly coextruded with one another, and the reinforcement layer (2) is extruded so as to be between said sublayers (3, 3').

Description

Schlauchleitung, insbesondere für Tauchausrüstungen  Hose line, especially for diving equipment
Die Erfindung betrifft eine Schlauchleitung, insbesondere für Tauchausrüstungen, mit The invention relates to a hose, in particular for diving equipment, with
- mindestens einer Basisschicht und - At least one base layer and
- mindestens einer offenen Armierungslage.  - At least one open reinforcement layer.
Ein armierter Schlauch für Tauchausrüstungen ist beispielsweise aus der A reinforced hose for diving equipment is for example from the
US 2007/0209728 A1 bekannt. Der darin beschriebene Schlauch weist eine Innenschicht aus Polyethylen oder Polyurethan auf, auf den eine geschlossene Armierungsschicht aus Polyesterfäden aufgebracht ist. Diese Armierungsschicht ist wiederum umschlossen von einer weiteren vollflächigen Schicht aus Nylon-Fäden, die zum Schutz der US 2007/0209728 A1. The tube described therein has an inner layer of polyethylene or polyurethane, on which a closed reinforcing layer of polyester threads is applied. This reinforcing layer is in turn surrounded by another full-surface layer of nylon threads, which protect the
Armierungssschicht dient. Sowohl die äußere Schutzschicht als auch die Armierungsschicht sind geflochten ausgebildet. Problematisch bei diesem Taucherschlauch ist, dass bei einer Beschädigung der äußeren Umflechtung aus Polyamid-Fäden die Fäden der Armierungsschicht freiliegen und hierdurch sehr leicht beschädigt werden können. Dies kann zu einem vorzeitigen Versagen des Schlauches führen. Darüber hinaus ist der beschriebene Schlauch vergleichsweise steif und auch empfindlich gegenüber dynamischen Belastungen, zum Beispiel Wechselbiegungen. Armierungssschicht serves. Both the outer protective layer and the reinforcing layer are braided. The problem with this divers hose is that damage to the outer braid of polyamide threads exposed the threads of the reinforcing layer and thus can be easily damaged. This can lead to premature failure of the hose. In addition, the hose described is relatively stiff and also sensitive to dynamic loads, such as bends.
Eine Schlauchleitung mit den eingangs beschriebenen Merkmalen ist beispielsweise aus der US 2 143 852 bekannt. Die offene Armierungslage bildet hierbei eine separate Schicht zwischen Innenschlauch und Ummantelung. Bei einer Druckbelastung können sich die Fäden der Armierungslage unkontrolliert bewegen, so dass es zu einer bleibenden Verschiebung der Armierungsfäden und damit einer Funktionsschwächung der Armierungslage kommt. Auch dieser Schlauch neigt bei einer dynamischen Belastung zu einem frühzeitigen Versagen. Ebenso besteht bei diesem Schlauch wiederum die Gefahr, dass bei einem lokal vollständigen Abrieb der Ummantelungsschicht ein direkter Kontakt der Verstärkungsfäden zur äußeren Umgebung entsteht, woraus ein vorzeitiges Versagen resultieren kann. Vor dem beschriebenen Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Schlauchleitung mit den eingangs beschriebenen Merkmalen anzugeben, welche dauerhaft dynamischen Wechselbeanspruchungen standhält, deren Armierungslage gegen mechanische Beschädigungen gut geschützt ist und die darüber hinaus eine hohe Flexibilität aufweist. A hose with the features described above is known for example from US 2,143,852. The open reinforcement layer here forms a separate layer between inner tube and sheath. At a pressure load, the threads of the reinforcing layer can move uncontrollably, so that there is a permanent shift of the reinforcing threads and thus a weakening of the Armierungslage. Also, this hose tends to early failure under a dynamic load. Likewise, with this hose, there is again the risk that direct local contact of the reinforcing threads with the external environment will occur in the event of locally complete abrasion of the covering layer, which may result in premature failure. Against the background described, the invention has for its object to provide a hose with the features described above, which durable dynamic alternating stresses withstands, the Armierungslage is well protected against mechanical damage and also has a high flexibility.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die Basisschicht aus mindestens zwei nahtlos miteinander koextrudierten Teilschichten aufgebaut ist und die Armierungslage zwischen diesen beiden Teilschichten einextrudiert ist. Die Erfindung beruht auf der Erkenntnis, dass durch eine Abkehr vom klassischen Schichtaufbau„Innenschicht - Armierungsschicht - Außenschicht" die beschriebene Aufgabe auf einfache und kostengünstige Weise gelöst werden kann. Erfindungsgemäß wird die Armierungslage in die Basisschicht integriert, welche aus zwei Kunststoff-Teilschichten aufgebaut ist, die während des According to the invention, the object is achieved in that the base layer is composed of at least two seamlessly co-extruded sub-layers and the reinforcing layer is extruded between these two sub-layers. The invention is based on the finding that the object described can be achieved in a simple and inexpensive manner by a departure from the classical layer structure "inner layer - reinforcing layer - outer layer." According to the invention, the reinforcing layer is integrated into the base layer, which is constructed from two plastic sublayers during the
Koextrusionsverfahrens nahtlos miteinander verschweißt werden. Zweckmäßigerweise bestehen die beiden Teilschichten aus demselben Material oder aus der Materialkombination Polyurethan/Nitrilkautschuk. Zwischen diesen beiden Teilschichten wird die Armierungslage einextrudiert und ist somit wirkungsvoll gegen eine mechanische Beschädigung von außen geschützt. Die nahtlose Verbindung zwischen den beiden Teilschichten findet in den Freiräumen der offenen Armierungslage statt und sorgt hierbei für eine hervorragende Fixierung der Armierungslage innerhalb der Basisschicht. Aufgrund der offenen Struktur der Armierungslage ist eine sehr gute Flexibilität der erfindungsgemäßen Schlauchleitung gewährleistet. Die beiden aus demselben Material bestehenden Teilschichten werden durch den Koextrusionprozess innig miteinander verbunden, so dass eine kompakte einschichtige Basisschicht entsteht, in denen die beiden Teilschichten nahtlos einander übergehen. Es entsteht somit eine dickwandige Basisschicht mit einer darin integrierten Armierungslage. Durch die kristallisierten Fadenkanäle können die Armierungsfäden bei dynamischen Druckbelastungen nicht auswandern, so dass die Armierungslage ihre vordefinierte Gestalt beibehält. Die Schlauchleitung kann damit Wechselbiegungen kontrolliert standhalten. Insgesamt bleiben die einzelnen Armierungsfäden auch bei einer starken Wechselbeanspruchung über lange Zeit hinweg in ihrer Ursprungsposition, so dass eine bestmögliche Armierungswirkung gewährleistet ist. Der erfindungsgemäße Schlauch zeichnet sich auch dadurch aus, dass er ökologisch unbedenklich ist, da zu seiner Herstellung keinerlei Klebstoff erforderlich ist. Gemäß einer bevorzugten Ausführungsform der Erfindung ist die Armierungslage aus mehreren Fäden aufgebaut, die sich lediglich überlappend kreuzen und hierbei Freiräume bilden, in denen die Teilschichten nahtlos einander übergehen. Es wird also bewusst auf eine aufwendige Flechtung oder Gewebeherstellung verzichtet. Zweckmäßigerweise ist die Armierungslage aus mindestens zwei Teillagen aufgebaut, wobei eine Teillage jeweils aus parallel zueinander angeordneten Fäden besteht. Vorzugsweise sind die Fäden beider sich einander überlappenden Teillagen schräg zur Schlauchachse ausgerichtet und bilden hierbei Diagonallinien, welche mit der Schlauchlängsachse vorzugsweise einen Winkel von 44 bis 64°, insbesondere 50 bis 58°, einschließen. Die gegenläufige, überlappende und offene Armierungslage ist erfindungsgemäß in der Basisschicht eingeschlossen und dennoch flexibel. Zweckmäßigerweise besteht die Armierungslage aus Polyester. Coextrusion be seamlessly welded together. Conveniently, the two partial layers consist of the same material or of the combination of materials polyurethane / nitrile rubber. Between these two partial layers, the reinforcing layer is extruded and is thus effectively protected against mechanical damage from the outside. The seamless connection between the two partial layers takes place in the free spaces of the open reinforcement layer and ensures an excellent fixation of the reinforcement layer within the base layer. Due to the open structure of the reinforcing layer a very good flexibility of the hose according to the invention is ensured. The two partial layers consisting of the same material are intimately connected by the coextrusion process, so that a compact monolayer base layer is created, in which the two partial layers seamlessly merge. This results in a thick-walled base layer with an integrated reinforcement layer. Due to the crystallized thread channels, the reinforcing threads can not emigrate under dynamic pressure loads, so that the reinforcing layer retains its predefined shape. The hose line can thus withstand alternating bends controlled. Overall, the individual reinforcing threads remain in their original position for a long time even with a strong cyclic load, so that the best possible reinforcing effect is ensured. The hose according to the invention is also distinguished by the fact that it is ecologically harmless, since no adhesive is required for its production. According to a preferred embodiment of the invention, the reinforcing layer is composed of a plurality of threads, which only intersect overlappingly and thereby form free spaces in which the partial layers merge seamlessly with one another. It is therefore deliberately dispensed with elaborate braiding or tissue production. Conveniently, the reinforcing layer is composed of at least two partial layers, wherein a partial position consists of mutually parallel threads. Preferably, the threads of both overlapping partial layers are aligned obliquely to the tube axis and in this case form diagonal lines which preferably enclose an angle of 44 to 64 °, in particular 50 to 58 °, with the tube longitudinal axis. The counter-rotating, overlapping and open reinforcement layer according to the invention is enclosed in the base layer and yet flexible. Conveniently, the reinforcing layer consists of polyester.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung ist die Basisschicht von einer, vorzugsweise aus Polyamid bestehenden, Außenschicht ummantelt. Diese ist zweckmäßigerweise aus geflochtenen Fäden aufgebaut. Die Außenschicht schützt die Basisschicht gegen Abrieb. Wesentlich ist nun, dass die Außenschicht bzw. die Fäden der Außenschicht nicht im direkten Kontakt mit der Armierungslage stehen und somit selbst bei einem vollständigen Abrieb der Außenschicht die Armierungslage von der äußeren Teilschicht der Basisschicht geschützt ist. According to a further preferred embodiment of the invention, the base layer is encased by an outer layer, preferably made of polyamide. This is expediently constructed of braided threads. The outer layer protects the base layer against abrasion. It is essential that the outer layer or the threads of the outer layer are not in direct contact with the Armierungslage and thus even with a complete abrasion of the outer layer, the Armierungslage is protected by the outer sub-layer of the base layer.
Die Basisschicht kann aus Polyurethan, Polyethylen oder der Materialkombination Polyure- than/Nitrilkautschuk bestehen, z.B. indem die innere Teilschicht aus Polyurethan und die äußere Teilschicht aus Nitrilkautschuk besteht oder umgekehrt. Zweckmäßigerweise ist die Armierungslage in der Außenhälfte, z.B. im Außendrittel der Basisschicht angeordnet. Im Rahmen der Erfindung liegt es ebenso, dass die äußere Teilschicht und/oder die innere Teilschicht der Basisschicht durchsichtig ausgebildet ist. Durchsichtig meint hierbei transparent oder aber auch transluzent. Die Durchsichtigkeit erleichtert die Kontrolle des Fertigungsprozesses der Basisschicht mit der Einextrusion der Armierungslage zwischen den beiden Teilschichten. Im Rahmen der Erfindung liegt es femer, dass die äußere Teilschicht mit Hilfe von Farbpigmenten eingefärbt ist. Dies erlaubt auf einfache Weise eine große Farbvielfalt, sofern die Außenschicht eine offene Struktur aufweist, durchsichtig ausgebildet ist oder fehlt. The base layer may consist of polyurethane, polyethylene or the combination of materials polyurethane / nitrile rubber, e.g. in that the inner part layer is made of polyurethane and the outer part layer is made of nitrile rubber or vice versa. Conveniently, the reinforcing layer is in the outer half, e.g. arranged in the outer third of the base layer. In the context of the invention it is also the case that the outer sub-layer and / or the inner sub-layer of the base layer is transparent. Transparent means transparent or translucent. The transparency facilitates the control of the manufacturing process of the base layer with the single extrusion of the reinforcement layer between the two partial layers. In the context of the invention, it is further that the outer sub-layer is colored by means of color pigments. This allows a great variety of colors in a simple way, provided that the outer layer has an open structure, is transparent or absent.
Der erfindungsgemäße Schlauch ist insbesondere zum Einsatz für Tauchausrüstungen geeignet, bei denen hohe mechanische Belastungen sowohl in statischer als auch in dy- namischer Hinsicht zu verkraften sind. So kann beispielsweise die Schlauchleitung an eine Druckluftflasche angeschlossen sein und zur Luftversorgung des Tauchers dienen. The hose according to the invention is particularly suitable for use in diving equipment in which high mechanical loads in both static and dy- Namibia are to cope. For example, the hose can be connected to a compressed air cylinder and serve to supply the diver with air.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung ausführlich erläutert. Es zeigen schematisch: In the following the invention will be explained in detail with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1 einen Querschnitt durch eine erfindungsgemäße Schlauchleitung und 1 shows a cross section through a hose line according to the invention and
Fig. 2 eine Seitenansicht der in Fig. 1 dargestellte Schlauchleitung. Fig. 2 is a side view of the hose shown in Fig. 1.
Die Fig. 1 zeigt eine Schlauchleitung, welche insbesondere für Tauchausrüstungen zum Einsatz kommt. Sie weist eine Basisschicht 1 und eine offene Armierungslage 2 auf. Der Fig. 1 ist zu entnehmen, dass die Basisschicht 1 aus zwei nahtlos miteinander Fig. 1 shows a hose line, which is used in particular for diving equipment. It has a base layer 1 and an open reinforcement layer 2. From Fig. 1 it can be seen that the base layer 1 of two seamlessly with each other
koextrudierten Teilschichten 3, 3' aufgebaut ist und die Armierungslage 2 zwischen diesen beiden Teilschichten 3, 3' einextrudiert ist. Der nahtlose Übergang zwischen der inneren Teilschicht 3 und der äußeren Teilschicht 3' ist durch eine dünne gestrichelte Linie r angedeutet. Die beiden Teilschichten 3, 3' bestehen im Ausführungsbeispiel aus der Materialkombination Polyurethan (innere Teilschicht 3) und Nitrilkautschuk (äußere Teilschicht 3'). coextruded partial layers 3, 3 'is constructed and the reinforcing layer 2 is extruded between these two sub-layers 3, 3'. The seamless transition between the inner sub-layer 3 and the outer sub-layer 3 'is indicated by a thin dashed line r. In the exemplary embodiment, the two partial layers 3, 3 'consist of the combination of materials polyurethane (inner partial layer 3) and nitrile rubber (outer partial layer 3').
Der Fig. 2 ist zu entnehmen, dass die Armierungslage 2 aus mehreren Armierungsfäden 4, 4' aufgebaut ist, die sich lediglich überlappend kreuzen und hierbei Freiräume 5 bilden, in denen die Teilschichten 3, 3' nahtlos ineinander übergehen. Die Fig. 2 zeigt ferner, dass die Armierungslage 2 aus zwei Teillagen 6, 6' aufgebaut ist, wobei eine Teillage 6 bzw. 6' jeweils aus parallel angeordneten, voneinander beabstandeten Armierungsfäden 4 bzw. 4' besteht. Die Armierungsfäden 4, 4' beider sich einander überlappenden Teillagen 6, 6' sind schräg zur Schlauchlängsachse x ausgerichtet und bilden hierbei Diagonallinien 7, 7'. Diese schließen mit der Schlauchlängsachse x einen Winkel α von 44 bis 64°, zum Beispiel 50 bis 58°, ein. Die spiralförmig um die Schlauchachse x angeordneten Armierungsfäden 4, 4' bestehen aus Polyester. It can be seen from FIG. 2 that the reinforcing layer 2 is made up of a plurality of reinforcing threads 4, 4 ', which intersect only overlappingly and thereby form free spaces 5, in which the partial layers 3, 3' merge seamlessly into one another. FIG. 2 also shows that the reinforcing layer 2 is made up of two partial layers 6, 6 ', with one partial layer 6 or 6' each consisting of parallel arranged, mutually spaced reinforcing threads 4 or 4 '. The reinforcing threads 4, 4 'of both overlapping partial layers 6, 6' are aligned obliquely to the tube longitudinal axis x and in this case form diagonal lines 7, 7 '. These include with the tube longitudinal axis x an angle α of 44 to 64 °, for example 50 to 58 °, a. The reinforcing threads 4, 4 'arranged spirally around the tube axis x are made of polyester.
Einer vergleichenden Betrachtung der Fig. 1 und 2 ist ferner zu entnehmen, dass die Basisschicht 1 von einer aus Polyamid bestehenden Außenschicht 8 ummantelt ist. Diese ist aus nicht näher dargestellten geflochtenen Fäden aufgebaut. Insbesondere die Fig. 1 zeigt, dass die Armierungslage 8 in der Außenhälfte der Basisschicht 1 angeordnet ist, wobei die Grenze zwischen Innen- und Außenhälfte durch den mittleren Durchmesser dm = (da + d,) / 2 der Basisschicht 1 definiert ist. Ferner ist in der Fig. 2 angedeutet, dass die Basisschicht 1 im Ausführungsbeispiel komplett - also sowohl innere Teilschicht 3 als auch äußere Teilschicht 3' - durchsichtig ausgebildet ist. Der Innendurchmesser d, der Schlauchleitung, welcher von der Innenseite der Basisschicht 1 gebildet wird, beträgt 4 bis 8, zum Beispiel 5 bis 7 mm. Die Schichtdicke s = (da - dj) / 2 der Basisschicht 1 beträgt 2 bis 5 mm, zum Beispiel 3 bis 4 mm. Der Axialabstand I zwischen zwei derselben Teillage 6, 6' zugehörigen Armierungsfäden 4, 4' beträgt 0,5 bis 3 mm, zum Beispiel 1 bis 2 mm. Die Flächengröße der einzelnen von den Armierungsfäden 4, 4' gebildeten Freiräume 5, in denen die beiden Teilschichten 3, 3' nahtlos ineinander übergehen, beträgt mindestens 0,5 mm2, vorzugsweise mindestens 1 mm2, wobei andererseits die Flächengröße < 5 mm2 beträgt. A comparative consideration of FIGS. 1 and 2 can also be seen that the base layer 1 is surrounded by an existing of polyamide outer layer 8. This is constructed from braided threads, not shown. In particular, Fig. 1 shows that the reinforcing layer 8 is disposed in the outer half of the base layer 1, wherein the boundary between inner and outer half by the mean diameter d m = (d a + d,) / 2 of the base layer 1 is defined. Furthermore, it is indicated in FIG. 2 that the base layer 1 in the exemplary embodiment is completely transparent, ie both inner sub-layer 3 and outer sub-layer 3 '. The inner diameter d, the tubing formed from the inside of the base layer 1 is 4 to 8, for example, 5 to 7 mm. The layer thickness s = (d a - dj) / 2 of the base layer 1 is 2 to 5 mm, for example 3 to 4 mm. The axial distance I between two reinforcing threads 4, 4 'belonging to the same sub-layer 6, 6' is 0.5 to 3 mm, for example 1 to 2 mm. The area size of the individual free spaces 5 formed by the reinforcing threads 4, 4 'in which the two partial layers 3, 3' merge seamlessly into each other is at least 0.5 mm 2 , preferably at least 1 mm 2 , on the other hand the area size <5 mm 2 is.

Claims

Patentansprüche claims
1. Schlauchleitung, insbesondere für Tauchausrüstungen, mit 1. Hose line, especially for diving equipment, with
- mindestens einer Basisschicht (1) und - At least one base layer (1) and
- mindestens einer offenen Armierungslage (2), dadurch gekennzeichnet, dass die Basisschicht (1) aus mindestens zwei nahtlos miteinander koextrudierten Teilschichten (3, 3') aufgebaut ist und die Armierungslage (2) zwischen diesen beiden Teilschichten (3, 3') einextrudiert ist.  - At least one open reinforcement layer (2), characterized in that the base layer (1) of at least two seamlessly coextruded partial layers (3, 3 ') is constructed and the Armierungslage (2) between these two partial layers (3, 3') extruded is.
2. Schlauchleitung nach Anspruch 1 , dadurch gekennzeichnet, dass die Teilschichten aus demselben Material oder aus der Materialkombination Polyurethan/Nitrilkautschuk bestehen. 2. Hose line according to claim 1, characterized in that the partial layers consist of the same material or of the combination of materials polyurethane / nitrile rubber.
3. Schlauchleitung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Armie- rungslage (2) aus mehreren Armierungsfäden (4, 4') aufgebaut ist, die sich lediglich überlappend kreuzen und hierbei Freiräume (5) bilden, in denen die beiden Teilschichten (3, 3') nahtlos ineinander übergehen. 3. Hose line according to claim 1 or 2, characterized in that the reinforcing layer (2) of a plurality Armierungsfäden (4, 4 ') is constructed, which intersect only overlapping and thereby form free spaces (5), in which the two sub-layers (3, 3 ') seamlessly merge.
4. Schlauchleitung nach Anspruch 3, dadurch gekennzeichnet, dass die Armierungslage (2) aus mindestens zwei Teillagen (6, 6') aufgebaut ist, wobei eine Teillage (6, 6') jeweils aus parallel zueinander angeordneten Armierungsfäden (4, 4') besteht. 4. Hose line according to claim 3, characterized in that the Armierungslage (2) from at least two partial layers (6, 6 ') is constructed, wherein a partial layer (6, 6') respectively from mutually parallel Armierungsfäden (4, 4 ') consists.
5. Schlauchleitung nach Anspruch 4, dadurch gekennzeichnet, dass die Armierungsfäden (4, 4') beider sich einander überlappenden Teillagen (6, 6') schräg zur Schlauchlängs- achse (x) ausgerichtet sind und hierbei Diagonallinien (7, 7') bilden, welche mit der5. Hose line according to claim 4, characterized in that the reinforcing threads (4, 4 ') of both overlapping partial layers (6, 6') obliquely to the hose longitudinal axis (x) are aligned and in this case diagonal lines (7, 7 ') form , which with the
Schlauchlängsachse (x) vorzugsweise einen Winkel (a) von 44 bis 64°, insbesondere 50 bis 58°, einschließen. Hose longitudinal axis (x) preferably an angle (a) of 44 to 64 °, in particular 50 to 58 ° include.
6. Schlauchleitung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Armierungslage (2) aus Polyester besteht. 6. Hose line according to one of claims 1 to 5, characterized in that the reinforcing layer (2) consists of polyester.
7. Schlauchleitung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Basisschicht (1) von einer, vorzugsweise aus Polyamid bestehenden, Außenschicht (8) ummantelt ist. 7. Hose line according to one of claims 1 to 6, characterized in that the base layer (1) of a, preferably made of polyamide, outer layer (8) is sheathed.
8. Schlauchleitung nach Anspruch 7, dadurch gekennzeichnet, dass die Außenschicht (8) aus geflochtenen Fäden besteht. 8. Hose line according to claim 7, characterized in that the outer layer (8) consists of braided threads.
9. Schlauchleitung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Basisschicht (1) aus Polyurethan, Polyethylen oder der Materialkombination Polyure- than/Nitrilkautschuk besteht. 9. Hose line according to one of claims 1 to 8, characterized in that the base layer (1) consists of polyurethane, polyethylene or the material combination polyurethane / nitrile rubber.
10. Schlauchleitung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Armierungslage (2) in der Außenhälfte, vorzugsweise im Außendrittel, der Basisschicht (1) angeordnet ist. 10. Hose line according to one of claims 1 to 9, characterized in that the reinforcing layer (2) in the outer half, preferably in the outer third, the base layer (1) is arranged.
11. Schlauchleitung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die äußere Teilschicht (3') und/oder die innere Teilschicht (3) der Basisschicht (1) durchsichtig ausgebildet ist. 11. Hose line according to one of claims 1 to 10, characterized in that the outer sub-layer (3 ') and / or the inner sub-layer (3) of the base layer (1) is formed transparent.
EP13719401.5A 2012-05-16 2013-05-02 Hose line, in particular for diving equipment Withdrawn EP2850352A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012101814U DE202012101814U1 (en) 2012-05-16 2012-05-16 Hose line, especially for diving equipment
PCT/EP2013/001289 WO2013170930A1 (en) 2012-05-16 2013-05-02 Hose line, in particular for diving equipment

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EP2850352A1 true EP2850352A1 (en) 2015-03-25

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DE (1) DE202012101814U1 (en)
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