EP2014580A1 - Leakage protection cladding and double walled tank with the same - Google Patents

Leakage protection cladding and double walled tank with the same Download PDF

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Publication number
EP2014580A1
EP2014580A1 EP08160026A EP08160026A EP2014580A1 EP 2014580 A1 EP2014580 A1 EP 2014580A1 EP 08160026 A EP08160026 A EP 08160026A EP 08160026 A EP08160026 A EP 08160026A EP 2014580 A1 EP2014580 A1 EP 2014580A1
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EP
European Patent Office
Prior art keywords
nubs
foil
strip
layer
adjacent
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.)
Granted
Application number
EP08160026A
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German (de)
French (fr)
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EP2014580B1 (en
Inventor
Werner Bachmann
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.)
ONO WATERPROTECTION GMBH
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Gewasserschutz-Systeme Europa Werner Bachmann
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Priority claimed from CH01155/07A external-priority patent/CH705279B1/en
Priority claimed from CH11542007A external-priority patent/CH701472B1/en
Application filed by Gewasserschutz-Systeme Europa Werner Bachmann filed Critical Gewasserschutz-Systeme Europa Werner Bachmann
Publication of EP2014580A1 publication Critical patent/EP2014580A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/041—Rigid liners fixed to the container
    • B65D90/042—Rigid liners fixed to the container fixed pointwise or linewise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/48—Arrangements of indicating or measuring devices
    • B65D90/50—Arrangements of indicating or measuring devices of leakage-indicating devices
    • B65D90/501—Arrangements of indicating or measuring devices of leakage-indicating devices comprising hollow spaces within walls

Definitions

  • the present invention relates to a leak protection lining with a grooved metal foil, in particular a knobbed aluminum foil, with regularly arranged nubs, as well as a double-walled tank or bottom or a double-walled container with an outer wall and an inner leak protection lining arranged with a verifiable cavity to the outer wall.
  • the German patent application DE-OS-2658088 discloses a tank for underground storage of liquids such as fuel oil or diesel.
  • the tank has a steel container and a surrounding insulating jacket.
  • the steel tank is surrounded by a rot-proof, even gridded spacer layer.
  • On the spacer layer a gas- or liquid-tight envelope made of a fiber-reinforced plastic is applied.
  • the spacer layer consists of a uniformly pimped laminated body.
  • the composite may be formed of expanded metal, paper or a braid.
  • Known tank coatings use aluminum nubbed sheets with conical nubs.
  • the knobs are arranged side by side, so that rectangular rows are formed.
  • a disadvantage of these aluminum nap foil is that the bulges are preferably compressed during processing.
  • a relatively large amount of coating material is needed in the coating, since the plastic resin is applied manually.
  • Another disadvantage is that with a bending load, the coating of the spacer film is like replaced.
  • a plate which has a plurality of regularly protruding projections.
  • Such a plate is needed, for example, as a separator in polymer electrolyte fuel cells. It has on both sides of a plate plane protruding projections. These are arranged in rows, wherein the projections of the rows are arranged offset with projecting to one side projections relative to the projections of the rows with projecting projections to the other side.
  • the invention has the object to provide a leak protection lining with a knobbed metal foil whose film can be applied well and has a high compressive strength.
  • a stable bond between metal foil and coating should be able to be produced with little coating material.
  • Another object is to propose a leakproof lining for a double-walled tank which can be made quickly and inexpensively.
  • double-walled tanks with a content of up to about 25 m 3 should be produced inexpensively.
  • the object is achieved in a leak protection lining according to the preamble of claim 1 by the characterizing features of claim 1.
  • the metal foil has in a known manner regularly arranged knobs which are arranged in mutually offset strip areas, which are characterized by a constant change of nub and film base area.
  • the film is in particular a knobbed aluminum foil.
  • such a dimpled film is characterized in that the dimples have a strip width and a square ground plan surface, and that the film base surface areas present therebetween have a strip width and in the strip longitudinal direction a shorter extent than the dimples.
  • the offset of the nubs of adjacent strip areas is, however, designed in such a way that a nub of a strip area adjoins on both sides on two nubs of an adjacent strip area which are separated by a film base area.
  • the film base areas are formed substantially planar.
  • these adjacent knobs are advantageously connected to each other via a small protrusion relative to the surface of the film base.
  • the nubs thus have a spherical shape and adjacent nubs are offset from each other.
  • the metal foil according to the invention has the advantage that the Risk of breakage is reduced. Also, the metal foil according to the invention has a higher compressive strength than conventional metal foils. Also, the film according to the invention can be laid better than conventional films, because it has no tendency to unroll obliquely.
  • each nub is connected via a small elevation, which corresponds to a fraction of the nub height, each with 4 adjacent nubs.
  • This geometry results in a greater rigidity than conventional nubbed sheets.
  • the knobs are each about the same size. As a result, a uniform circulation can be guaranteed.
  • the metal foil is made of an aluminum foil with a thickness between 0.15 and 0.25 mm, preferably between 0.18 and 0.22 mm.
  • the height of the dimples is between 0.6 and 1.5 mm, preferably between 0.8 and 1.2 mm. It has proved to be advantageous if the metal foil has a weight per unit area between 0.62 and 0.78 kg / m 2, preferably between 0.67 and 0.73 kg / m 2. With such a basis weight, a metal foil with low weight and high pressure rigidity can be produced.
  • the subject matter of the present invention is also a double-walled tank or container, in particular for liquids, with an outer wall and a leak protection lining described above, which is spaced from the outer wall by a cavity.
  • the metal spacer foil with the spherical nubs on the outer wall As a result, a checkable for leaks cavity is formed between the metal foil and the outer wall. This can be checked for leaks, for example by means of negative pressure.
  • a plastic coating is applied to the inside of the metal spacer film. This plastic coating has, according to a particularly preferred embodiment, a modulus of elasticity of ⁇ 8000 N / mm 2 , preferably ⁇ 7000 N / mm 2 and most preferably about 6000 N / mm 2 .
  • a modulus of elasticity ⁇ 8000 N / mm 2 is of importance, since there is less risk of the plastic layer detaching from the aluminum nubbed foil or cracking in the event of a temperature shock. Such problems can occur despite the primed surface of the film, especially at the bottom / wall transitions where the stress is greatest.
  • a plastic coating can basically an epoxy, polyester, polyurethane; Novolack (an epoxy-based vinyl ester resin) or a polycarbonate resin may be used.
  • an epoxy resin in particular a 2-component epoxy resin is used.
  • the plastic coating is made of a combination of at least 2 different 2-component epoxy resins.
  • the epoxy resins By a suitable choice of the epoxy resins, a deep modulus of elasticity can be produced.
  • the plastic coating is sprayed on. By spraying in particular smaller tanks up to 25 m 3 content can be produced inexpensively. Also, the plastic coating is suitable for a specific duration designed for refurbishment of an existing tank.
  • the nubbed foil despite the laying direction is clearly given by the knobs, primed on both sides.
  • the primer on the inside serves for the adhesion between plastic coating and aluminum foil.
  • the primer on the side serves for the electrolytic isolation between the tank wall and the dimpled foil. It prevents chemical and electrochemical (galvanic) reactions between the dimpled foil and the outer tank wall.
  • Tanks up to a content of about 25 m 3 are preferably created without fiber reinforcement of the plastic coating.
  • a reinforcement is required.
  • an at least two-layer Glasmaschinearmtechnik is incorporated in the plastic layer.
  • This glass fiber reinforcement may comprise at least a 2-layer glass fiber fabric.
  • the modulus of elasticity of the inner wall can be improved.
  • the glass fiber fabric of at least one layer is formed as fiberglass fabric.
  • the use of a glass silk fabric has the advantage that compared to a glass fiber mat, the resin is absorbed faster and better distributed. The danger of "over-resinification" is lower. One consequence of this is that significantly less synthetic resin is needed than with known glass fiber mats.
  • Another advantage is that when laying out no disturbing glass parts are split off because rovings (fiber strands) are used with infinitely long filaments.
  • the filaments of the glass silk fabric are preferably untwisted (so-called smooth filament yarns).
  • the weave connection improves the peel strength (no shearing off of the individual fabric layers) as well as the fracture behavior of the laminate.
  • the plastic layer 2-layer glass fiber fabric is advantageously formed at least in one layer as a glass fiber fabric.
  • the proportion of warp and weft threads of at least one layer is approximately equal.
  • the fineness of the warp and weft threads is approximately the same size.
  • the multilayered glass silk fabric with the untreated layer rests on the spacer film.
  • the basis weight of the multi-layered fabric is between 250 g / m2 and 400 g / m2, preferably between 280 g / m2 and 330 g / m2 and most preferably about 300 g / m2.
  • the Figures 1 and 2 show a double-sided primed metal foil 11 with spaced nubs 13.
  • the nubs 13 are formed as cones or balls.
  • adjacent strip areas 33 with square nubs 13 in plan view and planar, rectangular film base areas 31, these alternate with respect to one another.
  • two stripe areas are highlighted by three broken lines and are delimited from each other.
  • the ground plan surface 14 of a nub is bordered by a broken line.
  • the strip areas are offset relative to one another with respect to the position of the cones 13, so that the strip areas 33 result in diagonally extending rows of cones arranged one behind the other.
  • Each cone 13 is each of 4 Surrounding adjacent cones, wherein in the diagonal row, the valley 15 between two adjacent cones 13 is slightly increased in each case with respect to the base of the film. This valley 15 is the point at which two adjacent cones in adjacent strip areas 33 adjoin one another.
  • FIG. 3 shows a detail and in section the structure of a double-walled container with the inventive metal foil 11.
  • the structure shown is suitable for containers up to 25 m 3 .
  • the double-walled container has an outer wall 21 and an inner wall 23.
  • the outer wall 21 may be a steel wall or masonry.
  • the inner wall 23 is formed by a metal foil 11 and a plastic coating 25.
  • the metal foil 11 rests against the outer wall 21 with the primed cover surfaces 17, so that a gap 27 is formed between the outer wall 21 and the metal foil 11.
  • the primer prevents a galvanic reaction between the aluminum of the foil and the steel of the outer wall. If the gap 27 is leaking, the leak protection lining can be checked for leaks by means of leak detectors in a manner known to those skilled in the art.
  • the plastic layer 25 is preferably sprayed on and consists of a 2-component epoxy resin. Thanks to the priming of the inner surface, good adhesion of the plastic to the aluminum nubbed foil is ensured.
  • FIG. 4 shows a detail and in section the structure of a double-walled container with the inventive metal foil 11.
  • the double-walled container has the FIG. 3 according to an outer wall 21 and an inner wall 23.
  • the outer wall 21 may be a steel wall or masonry.
  • the inner wall 23 is formed by a metal foil 11 and a plastic coating 25.
  • the metal foil 11 bears against the outer wall 21 with the cover surfaces 17, so that a gap 27 is formed between the outer wall 21 and the metal foil 11.
  • the leak protection lining can be checked for leaks by means of leak detectors in a manner known to those skilled in the art.
  • a one-, two- or multi-layer glass fiber fabric 29 is incorporated.
  • the glass fiber fabric 29 gives the inner wall a very high strength, which makes the structure suitable for containers over 25m 3 .
  • a glass silk fabric 30 is preferably used. In comparison with a conventional glass fiber mat, this has the surprising advantage that a glass silk fabric 30 with a lower basis weight than a glass fiber mat in the laminate has a higher tear resistance than a glass fiber mat.
  • a glass silk fabric 30 has the additional advantage that less resin is used for the coating.
  • epoxy resins, polycarbonates, polyester resins, polyurethane, novolac (an epoxy-based vinyl ester resin) and the like can be used.
  • the present invention thus relates primarily to a dimpled metal foil 11, in particular knurled aluminum foil, with regularly arranged nubs 13, which are formed as spherical truncated cones, and a double-walled tank produced therewith.
  • the individual nubs 13 each have an approximately circular or square base surface.
  • the knobs 13 are arranged at such a distance from each other that their feet pass into each other in a slight elevation 15.
  • the metal foil 11 of the Leckterrorismauskelidung in strip areas 33 arranged nubs 13.
  • knobs 13 alternate with planar film base 31.
  • the strip-wide knobs 13 are arranged offset to one another.
  • a nub 13 of a strip region 33 adjoins two nubs 13 of the adjacent strip region 33 on each side. This reduces the risk of breakage.
  • such a film has the advantage that in the case of tanks up to 25m3 no fiber reinforcement in the plastic coating is required. As a result, plastic and material for fiber reinforcement can be saved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Laminated Bodies (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)

Abstract

Lining made from an aluminum foil (11) comprises nubs (13) having a rectangular cross-sectional surface (14) and surface regions (31) with shorter extension than the nubs. Neighboring nubs are displaced in neighboring strip regions and one nub of the strip region lies on nubs of a neighboring strip region. An independent claim is also included for a double-walled tank or container for liquids with the above lining. Preferred Features: The surface regions of the nub foil is planar. The nubs are 0.8-1.2 mm high.

Description

Gebiet der ErfindungField of the invention

Die vorliegende Erfindung betrifft eine Leckschutzauskleidung mit einer genoppten Metallfolie, insbesondere einer genoppten Aluminiumfolie, mit regelmässig angeordneten Noppen, sowie einen doppelwandigen Tank oder Boden oder ein doppelwandiges Behältnis mit einer Aussenwand und einer mit einem überprüfbaren Hohlraum zur Aussenwand angeordneten inneren Leckschutzauskleidung.The present invention relates to a leak protection lining with a grooved metal foil, in particular a knobbed aluminum foil, with regularly arranged nubs, as well as a double-walled tank or bottom or a double-walled container with an outer wall and an inner leak protection lining arranged with a verifiable cavity to the outer wall.

Stand der TechnikState of the art

Die deutsche Offenlegungsschrift DE-OS-2658088 offenbart einen Tank zur unterirdischen Lagerung von Flüssigkeiten, wie Heizöl oder Diesel. Der Tank besitzt einen Behälter aus Stahl und einen diesen umgebenden Isoliermantel. Der Stahltank ist von einer verrottungsfesten, gleichmässig gerasterten Distanzschicht umgeben. Auf der Distanzschicht ist eine gas- bzw. flüssigkeitsdichte Umhüllung aus einem faserverstärktem Kunststoff aufgebracht. Die Distanzschicht besteht aus einem gleichmässig genoppten Schichtkörper. Der Schichtkörper kann aus Streckmetall, Papier oder einem Geflecht gebildet sein.The German patent application DE-OS-2658088 discloses a tank for underground storage of liquids such as fuel oil or diesel. The tank has a steel container and a surrounding insulating jacket. The steel tank is surrounded by a rot-proof, even gridded spacer layer. On the spacer layer, a gas- or liquid-tight envelope made of a fiber-reinforced plastic is applied. The spacer layer consists of a uniformly pimped laminated body. The composite may be formed of expanded metal, paper or a braid.

In bekannten Tankbeschichtungen sind Aluminiumnoppenfolien mit kegelförmigen Noppen eingesetzt. Dabei sind die Noppen nebeneinander angeordnet, sodass rechtwinklig aufeinander stehende Reihen gebildet sind. Nachteilig an diesen AluminiumNoppenfolien ist, dass die Ausbuchtungen bei der Verarbeitung gerne zusammengedrückt werden. Ausserdem wird bei der Beschichtung relativ viel Beschichtungsmaterial gebraucht, da das Kunststoffharz manuell aufgetragen wird. Ein weiterer Nachteil ist, dass bei einer Biegebelastung die Beschichtung von der Distanzfolie gerne abgelöst wird.Known tank coatings use aluminum nubbed sheets with conical nubs. The knobs are arranged side by side, so that rectangular rows are formed. A disadvantage of these aluminum nap foil is that the bulges are preferably compressed during processing. In addition, a relatively large amount of coating material is needed in the coating, since the plastic resin is applied manually. Another disadvantage is that with a bending load, the coating of the spacer film is like replaced.

Aus der DE-A 101 01 059 ist eine Platte bekannt, die eine Vielzahl von regelmässig vorstehenden Vorsprüngen aufweist. Eine solche Platte wird beispielsweise als Separator in Polymerelektrolytbrennstoffzellen benötigt. Sie besitzt zu beiden Seiten einer Plattenebene abstehende Vorsprünge. Diese sind in Reihen angeordnet, wobei die Vorsprünge der Reihen mit zu einer Seite vorspringenden Vorsprüngen gegenüber den Vorsprüngen der Reihen mit zur anderen Seite vorspringenden Vorsprüngen versetzt angeordnet sind.From the DE-A 101 01 059 For example, a plate is known which has a plurality of regularly protruding projections. Such a plate is needed, for example, as a separator in polymer electrolyte fuel cells. It has on both sides of a plate plane protruding projections. These are arranged in rows, wherein the projections of the rows are arranged offset with projecting to one side projections relative to the projections of the rows with projecting projections to the other side.

Aus der DE-A 2 349 499 ist eine Folie bekannt, die zur Erreichung einer hohen Scherflexibilität und hoher Druckbeständigkeit sich kreuzende Rinnen aufweist, wobei an den Kreuzungsstellen der Rinnen kugelförmige Vertiefungen ausgebildet sind.From the DE-A 2 349 499 a film is known, which has to achieve a high shear flexibility and high pressure resistance intersecting grooves, wherein at the intersection of the grooves spherical depressions are formed.

Aufgabe der ErfindungObject of the invention

Ausgehend von diesem Stand der Technik stellt sich die Erfindung zur Aufgabe, eine Leckschutzauskleidung mit einer genoppten Metallfolie bereitzustellen, deren Folie sich gut applizieren lässt und eine hohe Druckfestigkeit aufweist. Ausserdem soll mit wenig Beschichtungsmaterial ein stabiler Verbund zwischen Metallfolie und Beschichtung erzeugt werden können. Ein weiteres Ziel ist es, eine Leckschutzauskleidung für einen doppelwandigen Tank vorzuschlagen, welche rasch und kostengünstig hergestellt werden kann. Insbesondere sollen doppelwandige Tanks mit einem Inhalt bis zu ungefähr 25 m3 kostengünstig hergestellt werden können.Based on this prior art, the invention has the object to provide a leak protection lining with a knobbed metal foil whose film can be applied well and has a high compressive strength. In addition, a stable bond between metal foil and coating should be able to be produced with little coating material. Another object is to propose a leakproof lining for a double-walled tank which can be made quickly and inexpensively. In particular, double-walled tanks with a content of up to about 25 m 3 should be produced inexpensively.

Beschreibungdescription

Erfindungsgemäss wird die Aufgabe bei einer Leckschutzauskleidung gemäss Oberbegriff von Anspruch 1 durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.According to the invention the object is achieved in a leak protection lining according to the preamble of claim 1 by the characterizing features of claim 1.

Bei der Leckschutzauskleidung hat die Metallfolie in bekannter Art regelmässig angeordnete Noppen, die in gegeneinander versetzten Streifenbereichen angeordnet sind, welche durch einen steten Wechsel von Noppe und Foliengrundflächenbereich geprägt sind. Die Folie ist insbesondere eine genoppte Aluminiumfolie.In the leak protection lining, the metal foil has in a known manner regularly arranged knobs which are arranged in mutually offset strip areas, which are characterized by a constant change of nub and film base area. The film is in particular a knobbed aluminum foil.

Erfindungsgemäss zeichnet sich eine solche Noppenfolie dadurch aus, dass die Noppen Streifenbreite und eine quadratische Grundrissfläche aufweisen, und dass die dazwischen vorliegenden Foliengrundflächenbereiche Streifenbreite und in Streifenlängsrichtung eine kürzere Ausdehnung als die Noppen aufweisen. Dies hat zur Folge, dass benachbarte Noppen in benachbarten Streifenbereichen aneinander angrenzen. Die Versetzung der Noppen benachbarter Streifenbereiche ist indes derart ausgebildet, dass eine Noppe eines Streifenbereichs beidseitig an je zwei durch einen Foliengrundflächenbereich getrennte Noppen eines benachbarten Streifenbereichs angrenzt.According to the invention, such a dimpled film is characterized in that the dimples have a strip width and a square ground plan surface, and that the film base surface areas present therebetween have a strip width and in the strip longitudinal direction a shorter extent than the dimples. This has the consequence that adjacent nubs in adjacent strip areas adjoin one another. The offset of the nubs of adjacent strip areas is, however, designed in such a way that a nub of a strip area adjoins on both sides on two nubs of an adjacent strip area which are separated by a film base area.

Zweckmässigerweise sind die Foliengrundflächenbereiche im Wesentlichen ebenflächig ausgebildet. In den Bereichen, in welchen die Noppen an die vier benachbarten Noppen angrenzen, sind diese benachbarten Noppen vorteilhaft über eine kleine Erhebung gegenüber der Fläche der Foliengrundfläche miteinander verbunden.Conveniently, the film base areas are formed substantially planar. In the areas in which the knobs adjoin the four adjacent knobs, these adjacent knobs are advantageously connected to each other via a small protrusion relative to the surface of the film base.

Die Noppen haben somit eine Kugelgestalt und benachbarte Noppen sind versetzt zueinander angeordnet. Die erfindungsgemässe Metallfolie hat den Vorteil, dass die Gefahr von Bruchstellen reduziert ist. Auch hat die erfindungsgemässe Metallfolie eine höhere Druckfestigkeit als konventionelle Metallfolien. Auch kann die erfindungsgemässe Folie besser als konventionelle Folien verlegt werden, weil sie keine Tendenz hat, sich schräg abzurollen.The nubs thus have a spherical shape and adjacent nubs are offset from each other. The metal foil according to the invention has the advantage that the Risk of breakage is reduced. Also, the metal foil according to the invention has a higher compressive strength than conventional metal foils. Also, the film according to the invention can be laid better than conventional films, because it has no tendency to unroll obliquely.

Gemäss der oben beschriebenen bevorzugten Ausführungsform ist jede Noppe über eine kleine Erhebung, welche einem Bruchteil der Noppenhöhe entspricht, mit jeweils 4 benachbarten Noppen verbunden. Durch diese Geometrie ergibt sich eine grössere Steifigkeit als bei konventionellen Noppenfolien. Zweckmässigerweise sind die Noppen jeweils ungefähr gleich gross. Dadurch kann eine gleichmässige Auflage garantiert werden.According to the preferred embodiment described above, each nub is connected via a small elevation, which corresponds to a fraction of the nub height, each with 4 adjacent nubs. This geometry results in a greater rigidity than conventional nubbed sheets. Conveniently, the knobs are each about the same size. As a result, a uniform circulation can be guaranteed.

Vorteilhaft ist die Metallfolie aus einer Aluminiumfolie mit einer Stärke zwischen 0.15 und 0.25 mm, vorzugsweise zwischen 0.18 und 0.22 Millimeter hergestellt ist. Vorteilhaft beträgt die Höhe der Noppen zwischen 0.6 und 1.5 mm, vorzugsweise zwischen 0.8 und 1.2 mm. Es hat sich als vorteilhaft herausgestellt, wenn die Metallfolie ein Flächengewicht zwischen 0.62 und 0.78 Kg/m2, vorzugsweise zwischen 0.67 und 0.73 Kg/m2 besitzt. Bei einem solchen Flächengewicht kann eine Metallfolie mit geringem Gewicht und hoher Drucksteifigkeit hergestellt werden.Advantageously, the metal foil is made of an aluminum foil with a thickness between 0.15 and 0.25 mm, preferably between 0.18 and 0.22 mm. Advantageously, the height of the dimples is between 0.6 and 1.5 mm, preferably between 0.8 and 1.2 mm. It has proved to be advantageous if the metal foil has a weight per unit area between 0.62 and 0.78 kg / m 2, preferably between 0.67 and 0.73 kg / m 2. With such a basis weight, a metal foil with low weight and high pressure rigidity can be produced.

Gegenstand der vorliegenden Erfindung ist auch ein doppelwandiger Tank oder Behältnis, insbesondere für Flüssigkeiten, mit einer Aussenwand und eine zur Aussenwand durch einen Hohlraum beabstandeten oben beschriebenen Leckschutzauskleidung.The subject matter of the present invention is also a double-walled tank or container, in particular for liquids, with an outer wall and a leak protection lining described above, which is spaced from the outer wall by a cavity.

Vorzugsweise liegt die Metalldistanzfolie mit den kugelförmigen Noppen an der Aussenwand an. Dadurch ist zwischen der Metallfolie und der Aussenwand ein auf Undichtigkeiten überprüfbarer Hohlraum gebildet. Dieser kann beispielsweise mittels Unterdruck auf Undichtigkeiten hin überprüft werden. Zweckmässigerweise ist auf der Innenseite der Metalldistanzfolie eine Kunststoffbeschichtung aufgebracht. Diese Kunststoffbeschichtung hat gemäss einer besonders bevorzugten Ausführungsform ein Elastizitätsmodul von < 8000 N/mm2, vorzugsweise < 7000 N/mm2 und ganz besonders bevorzugt ungefähr 6000 N/mm2. Ein Elastizitätsmodul < 8000 N/mm2 ist von Bedeutung, weil damit weniger die Gefahr besteht, dass die Kunststoffschicht sich von der Alu-Noppenfolie ablöst oder bei einem Temperaturschock Risse bildet. Solche Probleme können trotz der geprimerten Oberfläche der Folie insbesondere bei den Boden/Wandübergängen auftreten, wo die Beanspruchung am grössten ist. Als Kunststoffbeschichtung kann grundsätzlich ein Epoxy-, Polyester-, Polyurethan; Novolack (ein epoxyd-basierendes Vinylesterharz) oder ein Polycarbonatharz eingesetzt sein.Preferably, the metal spacer foil with the spherical nubs on the outer wall. As a result, a checkable for leaks cavity is formed between the metal foil and the outer wall. This can be checked for leaks, for example by means of negative pressure. Conveniently, a plastic coating is applied to the inside of the metal spacer film. This plastic coating has, according to a particularly preferred embodiment, a modulus of elasticity of <8000 N / mm 2 , preferably <7000 N / mm 2 and most preferably about 6000 N / mm 2 . A modulus of elasticity <8000 N / mm 2 is of importance, since there is less risk of the plastic layer detaching from the aluminum nubbed foil or cracking in the event of a temperature shock. Such problems can occur despite the primed surface of the film, especially at the bottom / wall transitions where the stress is greatest. As a plastic coating can basically an epoxy, polyester, polyurethane; Novolack (an epoxy-based vinyl ester resin) or a polycarbonate resin may be used.

Bevorzugt ist jedoch ein Epoxyharz, insbesondere ein 2-Komponenten Epoxyharz eingesetzt.Preferably, however, an epoxy resin, in particular a 2-component epoxy resin is used.

Gemäss einer bevorzugten Ausführungsform ist die Kunststoffbeschichtung aus einer Kombination von mindestens 2 verschiedenen 2-Komponenten Epoxyharzen hergestellt. Durch geeignete Wahl der Epoxyharze kann ein tiefes Elastizitätsmodul erzeugt werden. Vorzugsweise ist die Kunststoffbeschichtung aufgespritzt. Durch Aufspritzen können insbesondere kleinere Tanks bis ca. 25 m3 Inhalt kostengünstig hergestellt werden. Auch eignet sich die Kunststoffbeschichtung für eine auf eine bestimmte Dauer ausgelegte Sanierung eines bestehenden Tanks.According to a preferred embodiment, the plastic coating is made of a combination of at least 2 different 2-component epoxy resins. By a suitable choice of the epoxy resins, a deep modulus of elasticity can be produced. Preferably, the plastic coating is sprayed on. By spraying in particular smaller tanks up to 25 m 3 content can be produced inexpensively. Also, the plastic coating is suitable for a specific duration designed for refurbishment of an existing tank.

Vorteilhaft ist die Noppenfolie, trotzdem die Verlegerichtung durch die Noppen eindeutig gegeben ist, beidseitig geprimert. Die Primerung auf der Innenseite dient der Haftung zwischen Kunststoffbeschichtung und Aluminiumnoppenfolie. Die Primerung auf der Ausseite dient der elektrolytischen Isolation zwischen der Tankwandung und der Noppenfolie. Sie verhindert chemische und elektrochemische (galvanische) Reaktionen zwischen der Noppenfolie und der äusseren Tankwandung.Advantageously, the nubbed foil, despite the laying direction is clearly given by the knobs, primed on both sides. The primer on the inside serves for the adhesion between plastic coating and aluminum foil. The primer on the side serves for the electrolytic isolation between the tank wall and the dimpled foil. It prevents chemical and electrochemical (galvanic) reactions between the dimpled foil and the outer tank wall.

Tanks bis zu einem Inhalt von ca. 25 m3 werden bevorzugt ohne Faserarmierung der Kunststoffbeschichtung erstellt. Für grössere Tanks hingegen ist eine Armierung erforderlich. Vorzugsweise ist in die Kunststoffschicht eine wenigstens zweischichtige Glasfaserarmierung eingearbeitet. Diese Glasfaserarmierung kann ein mindestens 2-schichtiges Glasfasergewebe umfassen. Dadurch kann das E-Modul der Innenwand verbessert werden. Gemäss einer besonders bevorzugten Ausführungsform ist das Glasfasergewebe mindestens der einen Schicht als Glasseidengewebe ausgebildet. Die Verwendung eines Glasseidengewebes hat den Vorteil, dass im Vergleich zu einer Glasfasermatte das Kunstharz schneller aufgenommen und besser verteilt wird. Dabei ist die Gefahr des "Überharzens" geringer. Eine Folge davon ist, dass deutlich weniger Kunstharz benötigt wird als bei bekannten Glasfasermatten. Ein weiterer Vorteil ist, dass beim Auslegen keine störenden Glasteile abgespalten werden, weil Rovings (Faserstränge) mit unendlich langen Filamenten verwendet sind. Die Filamente des Glasseidengewebes liegen vorzugsweise unverzwirnt vor (sog. glatte Filamentgarne). Die webetechnische Verbindung verbessert die Schälfestigkeit (kein Abschären der einzelnen Gewebelagen) sowie das Bruchverhalten des Laminats.Tanks up to a content of about 25 m 3 are preferably created without fiber reinforcement of the plastic coating. For larger tanks, however, a reinforcement is required. Preferably, an at least two-layer Glasfaserarmierung is incorporated in the plastic layer. This glass fiber reinforcement may comprise at least a 2-layer glass fiber fabric. As a result, the modulus of elasticity of the inner wall can be improved. According to a particularly preferred embodiment, the glass fiber fabric of at least one layer is formed as fiberglass fabric. The use of a glass silk fabric has the advantage that compared to a glass fiber mat, the resin is absorbed faster and better distributed. The danger of "over-resinification" is lower. One consequence of this is that significantly less synthetic resin is needed than with known glass fiber mats. Another advantage is that when laying out no disturbing glass parts are split off because rovings (fiber strands) are used with infinitely long filaments. The filaments of the glass silk fabric are preferably untwisted (so-called smooth filament yarns). The weave connection improves the peel strength (no shearing off of the individual fabric layers) as well as the fracture behavior of the laminate.

Bei Verwendung einer Gewebeeinlage wird bevorzugt Epoxy-, Polyester-, Polyurethan, Novolack (ein epoxyd-basierendes Vinylesterharz) oder Polycarbonatharz zur Herstellung der Kunststoffschicht verwendet. Das in die Kunststoffschicht eingearbeitete mindestens 2-schichtige Glasfasergewebe ist vorteilhaft mindestens in der einen Schicht als Glasseidengewebe ausgebildet. Zweckmässigerweise ist der Anteil an Kett- und Schussfäden mindestens einer Schicht ungefähr gleich gross. Bevorzugt ist die Feinheit der Kett- und Schussfäden ungefähr gleich gross.When using a fabric insert it is preferred to use epoxy, polyester, polyurethane, novolac (an epoxy-based vinylester resin) or polycarbonate resin to produce the plastic layer. The at least incorporated in the plastic layer 2-layer glass fiber fabric is advantageously formed at least in one layer as a glass fiber fabric. Conveniently, the proportion of warp and weft threads of at least one layer is approximately equal. Preferably, the fineness of the warp and weft threads is approximately the same size.

Zweckmässigerweise sind lediglich die Fasern der ersten Schicht mit einer Schlichte, insbesondere Silan-Schlichte, behandelt, und die Fasern der zweiten Schicht roh (unbehandelt). Dies hat den Vorteil, dass unterschiedliche Haftungen mit dem Untergrund erreicht werden können. Zweckmässigerweise liegt das mehrschichtige Glasseidengewebe mit der unbehandelten Schicht auf der Distanzhaltefolie auf. Vorteilhaft beträgt das Flächengewicht des mehrschichtigen Gewebes zwischen 250 g/m2 und 400 g/m2, vorzugsweise zwischen 280 g/m2 und 330 g/m2 und ganz besonders bevorzugt ca. 300 g/m2.Conveniently, only the fibers of the first layer are treated with a size, in particular silane size, and the fibers of the second layer are raw (untreated). This has the advantage that different adhesion to the ground can be achieved. Conveniently, the multilayered glass silk fabric with the untreated layer rests on the spacer film. Advantageously, the basis weight of the multi-layered fabric is between 250 g / m2 and 400 g / m2, preferably between 280 g / m2 and 330 g / m2 and most preferably about 300 g / m2.

Die Erfindung wird nachfolgend unter Bezugnahme auf die Figuren anhand eines Anwendungsbeispiels näher im Detail beschrieben. Dabei sind in den Figuren für gleiche Teile jeweils gleiche Bezugsziffern verwendet. Es zeigt:

Fig. 1
Schematisch eine Draufsicht auf eine in der erfindungsgemässen Leckschutzauskleidung anzuwendende Metallfolie;
Fig. 2
einen Schnitt durch die Metallfolie gemäss Fig. 1 entlang der Linie II-II; und
Fig. 3
Ausschnittsweise und im Schnitt der Aufbau eines doppelwandigen Tanks, dessen Innenwand ein Laminat ist mit einer erfindungsgemässen Metallfolie und einer aufgespritzten Kunststoffbeschichtung.
Fig. 4
Ausschnittsweise und im Schnitt der Aufbau eines doppelwandigen Tanks, dessen Innenwand ein Laminat ist mit einer erfindungsgemässen Metallfolie, mindestens einem Glasfasergewebe und einer Kunststoffschicht.
The invention will be described in more detail below with reference to the figures with reference to an application example. The same reference numerals are used in the figures for the same parts. It shows:
Fig. 1
Schematically a plan view of a metal foil to be used in the leakage protection lining according to the invention;
Fig. 2
a section through the metal foil according to Fig. 1 along the line II-II; and
Fig. 3
Sectionally and in section the construction of a double-walled tank whose inner wall is a laminate with a novel metal foil and a sprayed plastic coating.
Fig. 4
Sectionally and in section the construction of a double-walled tank whose inner wall is a laminate with a novel metal foil, at least one glass fiber fabric and a plastic layer.

Die Figuren 1 und 2 zeigen eine beidseitig geprimerte Metallfolie 11 mit in Abstand voneinander angeordneten Noppen 13. Die Noppen 13 sind als Kegel oder Kugeln ausgebildet. In benachbarten Streifenbereichen 33 mit im Grundriss quadratischen Noppen 13 und ebenflächigen, rechteckigen Foliengrundflächenbereichen 31 wechseln sich diese versetzt zueinander ab. In Figur 1 sind zwei Streifenbereiche durch drei unterbrochene Linien hervorgehoben und gegeneinander abgegrenzt. Die Grundrissfläche 14 einer Noppe ist zur Veranschaulichung in einem Beispiel mit unterbrochener Linie umrandet. Die Streifenbereiche sind bezüglich der Position der Kegel 13 versetzt zueinander angeordnet, sodass zu den Streifenbereichen 33 diagonal verlaufende Reihen von hintereinander angeordneten Kegeln resultieren. Jeder Kegel 13 ist jeweils von 4 benachbarten Kegeln umgeben, wobei in der diagonalen Reihe das Tal 15 zwischen zwei benachbarten Kegeln 13 jeweils gegenüber der Grundfläche der Folie leicht erhöht ist. Dieses Tal 15 ist die Stelle, an der zwei benachbarte Kegel in benachbarten Streifenbereichen 33 aneinander angrenzen.The Figures 1 and 2 show a double-sided primed metal foil 11 with spaced nubs 13. The nubs 13 are formed as cones or balls. In adjacent strip areas 33, with square nubs 13 in plan view and planar, rectangular film base areas 31, these alternate with respect to one another. In FIG. 1 two stripe areas are highlighted by three broken lines and are delimited from each other. For illustrative purposes, the ground plan surface 14 of a nub is bordered by a broken line. The strip areas are offset relative to one another with respect to the position of the cones 13, so that the strip areas 33 result in diagonally extending rows of cones arranged one behind the other. Each cone 13 is each of 4 Surrounding adjacent cones, wherein in the diagonal row, the valley 15 between two adjacent cones 13 is slightly increased in each case with respect to the base of the film. This valley 15 is the point at which two adjacent cones in adjacent strip areas 33 adjoin one another.

Durch die diagonal zu den Streifenbereichen verlaufende Anordnung der Noppen 13 und deren geometrische Ausbildung als Kegel mit kugeligem Abschluss ist eine höhere Druckfestigkeit als bei konventionellen Metallfolien erreicht. Die im oberen Teil kreisförmige Schnitte aufweisenden Kegel gehen im Fussbereich in Quadrate mit abgerundeten Kanten über. Diese quadratische Grundrissfläche 14 (Fig. 1) der Kegel hat Streifenbreite.By extending diagonally to the strip areas arrangement of the knobs 13 and their geometric configuration as a cone with spherical conclusion a higher compressive strength is achieved than in conventional metal foils. The cones, which have circular sections in the upper part, turn into squares with rounded edges in the foot area. This square footprint 14 ( Fig. 1 ) the cone has stripe width.

Figur 3 zeigt ausschnittsweise und im Schnitt den Aufbau eines doppelwandigen Behältnisses mit der erfindungsgemässen Metallfolie 11. Der dargestellte Aufbau eignet sich für Behältnisse bis ca. 25 m3. Das doppelwandige Behältnis besitzt eine Aussenwand 21 und eine Innenwand 23. Die Aussenwand 21 kann eine Stahlwand oder auch Mauerwerk sein. Die Innenwand 23 ist durch eine Metallfolie 11 und eine Kunststoffbeschichtung 25 gebildet. Die Metallfolie 11 liegt mit den geprimerten Deckflächen 17 an der Aussenwand 21 an, sodass zwischen der Aussenwand 21 und der Metallfolie 11 ein Zwischenraum 27 gebildet ist. Die Primerung verhindert eine galvanische Reaktion zwischen dem Aluminium der Folie und dem Stahl der Aussenwandung. Falls der Zwischenraum 27 leck ist kann die Leckschutzauskleidung mittels Lecksuchgeräten in dem Fachmann bekannter Weise auf Undichtigkeiten geprüft werden. FIG. 3 shows a detail and in section the structure of a double-walled container with the inventive metal foil 11. The structure shown is suitable for containers up to 25 m 3 . The double-walled container has an outer wall 21 and an inner wall 23. The outer wall 21 may be a steel wall or masonry. The inner wall 23 is formed by a metal foil 11 and a plastic coating 25. The metal foil 11 rests against the outer wall 21 with the primed cover surfaces 17, so that a gap 27 is formed between the outer wall 21 and the metal foil 11. The primer prevents a galvanic reaction between the aluminum of the foil and the steel of the outer wall. If the gap 27 is leaking, the leak protection lining can be checked for leaks by means of leak detectors in a manner known to those skilled in the art.

Die Kunststoffschicht 25 ist vorzugsweise aufgespritzt und besteht aus einem 2-Komponenten Epoxyharz. Dank der Primerung der inneren Oberfläche ist eine gute Haftung des Kunststoffs auf der Aluminiumnoppenfolie gewährleistet.The plastic layer 25 is preferably sprayed on and consists of a 2-component epoxy resin. Thanks to the priming of the inner surface, good adhesion of the plastic to the aluminum nubbed foil is ensured.

Figur 4 zeigt ausschnittsweise und im Schnitt den Aufbau eines doppelwandigen Behältnisses mit der erfindungsgemässen Metallfolie 11. Das doppelwandige Behältnis besitzt der Figur 3 entsprechend eine Aussenwand 21 und eine Innenwand 23. Die Aussenwand 21 kann eine Stahlwand oder auch Mauerwerk sein. Die Innenwand 23 ist durch eine Metallfolie 11 und eine Kunststoffbeschichtung 25 gebildet. Die Metallfolie 11 liegt mit den Deckflächen 17 an der Aussenwand 21 an, sodass zwischen der Aussenwand 21 und der Metallfolie 11 ein Zwischenraum 27 gebildet ist. Die Leckschutzauskleidung kann mittels Lecksuchgeräten in dem Fachmann bekannter Weise auf allfällige Undichtigkeiten geprüft werden. FIG. 4 shows a detail and in section the structure of a double-walled container with the inventive metal foil 11. The double-walled container has the FIG. 3 according to an outer wall 21 and an inner wall 23. The outer wall 21 may be a steel wall or masonry. The inner wall 23 is formed by a metal foil 11 and a plastic coating 25. The metal foil 11 bears against the outer wall 21 with the cover surfaces 17, so that a gap 27 is formed between the outer wall 21 and the metal foil 11. The leak protection lining can be checked for leaks by means of leak detectors in a manner known to those skilled in the art.

In die Kunststoffschicht 25 ist ein ein-, zwei- oder mehrlagiges Glasfasergewebe 29 eingearbeitet. Das Glasfasergewebe 29 verleiht der Innenwand eine sehr hohe Festigkeit, was den Aufbau für Behältnisse über 25m3 geeignet macht. Als Glasfasergewebe 29 wird vorzugsweise ein Glasseidengewebe 30 verwendet. Dieses hat im Vergleich zu einer konventionellen Glasfasermatte den überraschenden Vorteil, dass ein Glasseidengewebe 30 mit einem geringeren Flächengewicht als eine Glasfasermatte im Laminat eine höhere Reissfestigkeit besitzt als eine Glasfasermatte. Ein Glasseidengewebe 30 hat darüber hinaus den Vorteil, dass für die Beschichtung weniger Kunstharz verbraucht wird. Als Kunststoffe können Epoxyharze, Polycarbonate, Polyesterharze, Polyurethan-, Novolack (ein epoxyd-basierendes Vinylesterharz) und ähnliche verwendet werden.In the plastic layer 25 is a one-, two- or multi-layer glass fiber fabric 29 is incorporated. The glass fiber fabric 29 gives the inner wall a very high strength, which makes the structure suitable for containers over 25m 3 . As glass fiber fabric 29, a glass silk fabric 30 is preferably used. In comparison with a conventional glass fiber mat, this has the surprising advantage that a glass silk fabric 30 with a lower basis weight than a glass fiber mat in the laminate has a higher tear resistance than a glass fiber mat. A glass silk fabric 30 has the additional advantage that less resin is used for the coating. As the plastics, epoxy resins, polycarbonates, polyester resins, polyurethane, novolac (an epoxy-based vinyl ester resin) and the like can be used.

Die vorliegende Erfindung betrifft somit in erster Linie eine genoppte Metallfolie 11, insbesondere genoppte Aluminiumfolie, mit regelmässig angeordneten Noppen 13, welche als kugelig endende Kegelstümpfe ausgebildet sind, sowie einen damit hergestellten doppelwandigen Tank. Die einzelnen Noppen 13 haben jeweils eine ungefähr kreisförmige oder quadratische Basisfläche. Die Noppen 13 sind in einem solchen Abstand zueinander angeordnet, dass deren Füsse in einer leichten Erhebung 15 ineinander übergehen.The present invention thus relates primarily to a dimpled metal foil 11, in particular knurled aluminum foil, with regularly arranged nubs 13, which are formed as spherical truncated cones, and a double-walled tank produced therewith. The individual nubs 13 each have an approximately circular or square base surface. The knobs 13 are arranged at such a distance from each other that their feet pass into each other in a slight elevation 15.

Zusammengefasst besitzt die Metallfolie 11 der Leckschutzauskelidung in Streifenbereichen 33 angeordnete Noppen 13. In den Streifenbereichen 33 wechseln sich Noppen 13 mit ebenflächigen Foliengrundflächen 31 ab. In benachbarten Streifenbereichen 33 sind die streifenbreiten Noppen 13 versetzt zueinander angeordnet. Eine Noppe 13 eines Streifenbereichs 33 grenzt zu jeder Seite an zwei Noppen 13 des benachbarten Streifenbereichs 33 an. Dadurch ist die Gefahr der Bildung von Bruchstellen reduziert. Eine solche Folie hat unter anderem den Vorteil, dass bei Tanks bis 25m3 keine Faserarmierung in der Kunststoffbeschichtung erforderlich ist. Dadurch kann Kunststoff und Material für die Faserarmierung eingespart werden.In summary, the metal foil 11 of the Leckschutzauskelidung in strip areas 33 arranged nubs 13. In the strip areas 33 knobs 13 alternate with planar film base 31. In adjacent strip areas 33, the strip-wide knobs 13 are arranged offset to one another. A nub 13 of a strip region 33 adjoins two nubs 13 of the adjacent strip region 33 on each side. This reduces the risk of breakage. Among other things, such a film has the advantage that in the case of tanks up to 25m3 no fiber reinforcement in the plastic coating is required. As a result, plastic and material for fiber reinforcement can be saved.

Claims (15)

Leckschutzauskleidung mit einer genoppte Metallfolie, insbesondere genoppten Aluminiumfolie (11), mit regelmässig angeordneten Noppen (13), die in gegeneinander versetzten Streifenbereichen (33) angeordnet sind, welche durch einen steten Wechsel von Noppe (13) und Foliengrundflächenbereich (31) geprägt sind, und einer Kunststoffbeschichtung,
dadurch gekennzeichnet,
dass die Noppen (13) Streifenbreite und eine quadratische Grundrissfläche (14) und die Foliengrundflächenbereiche (31) Streifenbreite und in Streifenlängsrichtung eine kürzere Ausdehnung als die Noppen (13) aufweisen, und dass benachbarte Noppen (13) in benachbarten Streifenbereichen (33) derart versetzt zueinander angeordnet sind, dass eine Noppe (13) eines Streifenbereichs (33) beidseitig an je zwei durch einen Foliengrundflächenbereich (31) getrennte Noppen (31) eines benachbarten Streifenbereichs (33) angrenzt.Leak-proof lining comprising a dimpled metal foil, in particular a knurled aluminum foil (11), with regularly arranged dimples (13) arranged in staggered strip areas (33) characterized by a constant change of nub (13) and film base area (31), and a plastic coating,
characterized,
in that the nubs (13) strip width and a square base area (14) and the film base areas (31) strip width and in the strip longitudinal direction have a shorter extent than the nubs (13), and in that adjacent nubs (13) in adjacent strip areas (33) offset in such a way are arranged to each other, that a nub (13) of a strip portion (33) on both sides of two by a film base area (31) separated nubs (31) of an adjacent strip area (33) adjacent. Leckschutzauskleidung nach Anspruch 1, dadurch gekennzeichnet, dass die Foliengrundflächenbereiche (31) der Noppenfolie (11) im Wesentlichen ebenflächig ausgebildet sind.Leak-protection lining according to claim 1, characterized in that the foil base surface regions (31) of the dimpled foil (11) are substantially planar. Leckschutzauskleidung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede Noppe (13) in den Bereichen, in welchen sie an die vier benachbarten Noppen (13) angrenzt, über eine kleine Erhebung (15) mit diesen benachbarten Noppen (13) verbunden ist.Leak-proof lining according to claim 1 or 2, characterized in that each nub (13) in the areas in which it adjoins the four adjacent nubs (13), via a small elevation (15) is connected to these adjacent nubs (13). Leckschutzauskleidung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Höhe der Noppen (13) zwischen 0.6 und 1.5 mm, vorzugsweise zwischen 0.8 und 1.2 mm beträgt.Leak protection lining according to one of claims 1 to 3, characterized in that the height of the studs (13) is between 0.6 and 1.5 mm, preferably between 0.8 and 1.2 mm. Leckschutzauskleidung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kunststoffbeschichtung ein Elastizitätsmodul von < 8000 N/mm2, vorzugsweise < 7000 N/mm2 und ganz besonders bevorzugt ungefähr 6000 N/mm2 hat.Leak protection lining according to one of claims 1 to 4, characterized in that the plastic coating has a modulus of elasticity of <8000 N / mm 2 , preferably <7000 N / mm 2 and most preferably about 6000 N / mm 2 . Leckschutzauskleidung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Metalldistanzfolie eine beidseitig geprimerte Aluminiumnoppenfolie (11) ist.Leak protection lining according to one of claims 1 to 5, characterized in that the metal spacer foil is a double-sided primed aluminum knob foil (11). Doppelwandiger Tank oder Behältnis, insbesondere für Flüssigkeiten, mit einer Aussenwand (21) und einer zur Aussenwand einen überwachbaren Hohlraum bildenden inneren Leckschutzauskleidung (23) gemäss einem der Ansprüche 1 bis 4.Double-walled tank or container, in particular for liquids, with an outer wall (21) and an inner leak protection lining (23) forming an observable cavity for the outer wall according to one of claims 1 to 4. Tank nach Anspruch 7, dadurch gekennzeichnet, dass auf der Innenseite der Metalldistanzfolie (11) eine armierungsfreie Kunststoffbeschichtung (25) aufgebracht ist.Tank according to claim 7, characterized in that on the inside of the metal spacer foil (11) an armor-free plastic coating (25) is applied. Tank nach Anspruch 7, dadurch gekennzeichnet, dass auf der Innenseite der Metalldistanzfolie (11) eine Kunststoffschicht (25) aufgebracht ist, und in die Kunststoffschicht eine mindestens 2-schichtige Glasfaserarmierung (29) eingearbeitet ist.Tank according to claim 7, characterized in that on the inside of the metal spacer foil (11), a plastic layer (25) is applied, and in the plastic layer at least a 2-layer glass fiber reinforcement (29) is incorporated. Tank nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Kunststoffbeschichtung (25) aus einem 2-Komponenten Epoxyharz hergestellt ist.Tank according to one of claims 7 to 9, characterized in that the plastic coating (25) is made of a 2-component epoxy resin. Tank nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass die Kunststoffbeschichtung (25) aus einer Kombination von mindestens 2 verschiedenen 2-Komponenten Epoxyharzen hergestellt ist.Tank according to one of claims 7 to 10, characterized in that the plastic coating (25) is made of a combination of at least 2 different 2-component epoxy resins. Tank nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass die Kunststoffbeschichtung (25) aufgespritzt ist.Tank according to one of claims 8 to 11, characterized in that the plastic coating (25) is sprayed on. Tank nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass die Glasfaserarmierung (29) mindestens eine Schicht mit einem Glasseidengewebe (30) umfasst.Tank according to one of claims 9 to 12, characterized in that the glass fiber reinforcement (29) comprises at least one layer with a glass silk fabric (30). Tank nach Anspruch 13, dadurch gekennzeichnet, dass zwei Schichten von Glasseidengewebe (30) vorhanden sind und die beiden Schichten Glasseidengewebe (30) mittels wenigstens eines gewobenen Fadens miteinander verbunden sind.Tank according to claim 13, characterized in that two layers of glass silk fabric (30) are present and the two layers of glass silk fabric (30) are interconnected by means of at least one woven thread. Tank nach einem der Ansprüche 7 bis 14, dadurch gekennzeichnet, dass die Glasfaserarmierung ein zweischichtiges Gewebe aufweist, bei dem lediglich die Fasern der ersten Schicht mit einer Schlichte, vorzugsweise einer Silan-Schlichte behandelt sind.Tank according to one of claims 7 to 14, characterized in that the Glasfaserarmierung has a two-layer fabric in which only the fibers of the first layer are treated with a size, preferably a silane size.
EP08160026A 2007-07-10 2008-07-09 Leakage protection cladding and double walled tank with the same Active EP2014580B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01155/07A CH705279B1 (en) 2007-07-10 2007-07-10 Lining made from an aluminum foil for preventing leakages in a tank or container comprises nubs having a rectangular cross-sectional surface and surface regions with shorter extension than the nubs
CH11542007A CH701472B1 (en) 2007-07-10 2007-07-10 Lining made from an aluminum foil for preventing leakages in a tank or container comprises nubs having a rectangular cross-sectional surface and surface regions with shorter extension than the nubs

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Publication Number Publication Date
EP2014580A1 true EP2014580A1 (en) 2009-01-14
EP2014580B1 EP2014580B1 (en) 2010-10-06

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EP08160026A Active EP2014580B1 (en) 2007-07-10 2008-07-09 Leakage protection cladding and double walled tank with the same

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EP (1) EP2014580B1 (en)
AT (1) ATE483656T1 (en)
DE (1) DE502008001468D1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH478700A (en) * 1968-12-05 1969-09-30 Weiske Gerhard Storage containers for liquids, in particular heating oil
DE2349499A1 (en) 1972-10-02 1974-04-11 Rockwell International Corp FLEXIBLE COMPONENT
DE2658088A1 (en) 1976-12-22 1978-07-06 Tank Und Apparatebau W Ermert Underground oil storage tank - has rigid walls enclosed by latticework spacer layer supporting impermeable cladding
WO1981002562A1 (en) * 1980-03-07 1981-09-17 M Schaerer Double walled storage tank provided with an internal shell of plastic material
EP0754635A1 (en) * 1995-07-17 1997-01-22 Adisa Service und Entwicklungs AG Double-walled tank and method of making the same
DE10101059A1 (en) 2000-01-14 2001-09-13 Toyota Motor Co Ltd Plate with regular protrusions and method and device for their formation
EP1602597A1 (en) * 2004-04-30 2005-12-07 Adisa Service und Entwicklungs AG Knobbed internal liner for tank container

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH478700A (en) * 1968-12-05 1969-09-30 Weiske Gerhard Storage containers for liquids, in particular heating oil
DE2349499A1 (en) 1972-10-02 1974-04-11 Rockwell International Corp FLEXIBLE COMPONENT
DE2658088A1 (en) 1976-12-22 1978-07-06 Tank Und Apparatebau W Ermert Underground oil storage tank - has rigid walls enclosed by latticework spacer layer supporting impermeable cladding
WO1981002562A1 (en) * 1980-03-07 1981-09-17 M Schaerer Double walled storage tank provided with an internal shell of plastic material
EP0754635A1 (en) * 1995-07-17 1997-01-22 Adisa Service und Entwicklungs AG Double-walled tank and method of making the same
DE10101059A1 (en) 2000-01-14 2001-09-13 Toyota Motor Co Ltd Plate with regular protrusions and method and device for their formation
EP1602597A1 (en) * 2004-04-30 2005-12-07 Adisa Service und Entwicklungs AG Knobbed internal liner for tank container

Also Published As

Publication number Publication date
ATE483656T1 (en) 2010-10-15
EP2014580B1 (en) 2010-10-06
DE502008001468D1 (en) 2010-11-18

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