DE3514383A1 - Plastic waterproofing sheet - Google Patents

Plastic waterproofing sheet

Info

Publication number
DE3514383A1
DE3514383A1 DE19853514383 DE3514383A DE3514383A1 DE 3514383 A1 DE3514383 A1 DE 3514383A1 DE 19853514383 DE19853514383 DE 19853514383 DE 3514383 A DE3514383 A DE 3514383A DE 3514383 A1 DE3514383 A1 DE 3514383A1
Authority
DE
Germany
Prior art keywords
plastic
sheets
sheet according
sealing sheet
polyethylene
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Withdrawn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
DE19853514383
Other languages
German (de)
Inventor
Dieter Dipl.-Ing. Jablonka
Klaus Dipl.-Ing. 5804 Herdecke Urban
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.)
Doerken Ewald Co KG GmbH
Original Assignee
Doerken Ewald Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doerken Ewald Co KG GmbH filed Critical Doerken Ewald Co KG GmbH
Priority to DE19853514383 priority Critical patent/DE3514383A1/en
Priority to EP86103816A priority patent/EP0199099A3/en
Publication of DE3514383A1 publication Critical patent/DE3514383A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/004—Sealing liners
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/10—Surface shaping of articles, e.g. embossing; Apparatus therefor by electric discharge treatment
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • B29C65/8246—Pressure tests, e.g. hydrostatic pressure tests
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/14—PVF, i.e. polyvinyl fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
    • B29K2029/04—PVOH, i.e. polyvinyl alcohol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

In order to improve a plastic waterproofing sheet for installations for the storing of substances at risk from water, in particular for refuse landfill sites, to the extent that, inter alia, not only can they be joined together to form large-area, homogeneous landfill waterproofing means, but that also a greater imperviousness can be achieved than with plastic waterproofing sheets used hitherto for this purpose, it is proposed to provide a multilayered sheet which comprises two homogeneous sheets (1, 2) of plastic which are identical to each other and are arranged on the upper side and underside of the multilayered sheet, which can be welded well, has a high resistance to weather and to ageing amd also a high resistance to UV rays, a high tensile strength and extensibility as well as a high chemical resistance, and comprises at least one sheet (3, 7, 8) of plastic which is arranged congruently between the abovementioned sheets (1 and 2) and has in comparison with the outer sheets (1, 2) a higher vapour impermeability and at least approximately the same mechanical properties as the plastic of the two outer sheets (1 and 2).

Description

"Kunststoffdichtungsbahn" "Plastic geomembrane"

Die Erfindung betrifft eine Kunststoffdichtungsbahn für Anlagen zur Lagerung von wassergefährdenden Stoffen, insbesondere für Mülldeponien.The invention relates to a plastic sealing membrane for systems for Storage of substances hazardous to water, especially for landfills.

Um den Zutritt von Sickerwasser aus Deponien in den Untergrund zu verhindern oder auf ein Mindestmaß zu beschränken, ist es bekannt, die muldenförmigen Deponien mit Dichtungen aus einer Vielzahl nebeneinander angeordneter und miteinander großflächig verschweißten Kunststoffdichtungsbahnen, zum Beispiel aus Polyvinylfluorid, Polyethylen, chloriertem Polyethylen, Ethylen-Propylen-Terpolymer oder aus Ethylen-Cop.-Bitumen auszukleiden.In order to prevent seepage water from landfills into the subsoil prevent or minimize, it is known to trough-shaped Landfills with seals made of a multitude of juxtaposed and interrelated Large-area welded plastic sealing sheets, for example made of polyvinyl fluoride, Polyethylene, chlorinated polyethylene, ethylene-propylene terpolymer or from ethylene-copolymer bitumen to undress.

Derartige Kunststoffdichtungsbahnen sind unter anderem zwar miteinander gut verschweißbar, auch ist deren mechanische Festigkeit nach menschlichem Ermessen ausreichend, um auch den Z#eanspruchungen widerstehen zu können, die zum Beispiel bei Setzungsvorgängen der Deponiesohle auftreten können, aber dennoch besteht hierbei die Gefahr der Verunreinigung des Grundwassers zum Beispiel durch organische Lösungsmittel.Such plastic sealing sheets are inter alia with each other Well weldable, their mechanical strength is also based on human judgment sufficient to be able to withstand the stresses, for example can occur when the bottom of the landfill settles, but it still exists the risk of contamination of the groundwater, for example by organic solvents.

Es gibt zwar Kunststoffe, die eine größere Dichtigkeit als die vorgenannten Kunststoffe haben, um auch Deponien gegen organische Lösungsmittel abdichten zu können, aber diese sind unter anderem nicht so gut und dichtverschweißbar, daß daraus großflächige, homogene Deponie-Dichtungen gebildet werden können.Although there are plastics that have a greater tightness than the aforementioned Plastics have to seal landfills against organic solvents too can, but these are not so good and tightly weldable, among other things, that from it Large, homogeneous landfill seals can be formed.

Aufgabe der Erfindung ist es nun, eine Kunststoffdichtungsbahn der im Oberbegriff des Anspruches 1 angegebenen Art derart zu verbessern, daß diese unter anderem nicht nur zu großflächigen homogenen Deponiedichtungen sicher zusammengefügt werden können, sondern daß auch eine größere Dichtigkeit als mit bisher verwendeten Kunststoffdichtungsbahn#en erreichbar ist.The object of the invention is now to provide a plastic sealing membrane in the generic term of claim 1 specified type to improve such, that this, among other things, is not only safe for large-area, homogeneous landfill seals can be joined together, but that also has a greater tightness than with previously used plastic sealing membrane # s is achievable.

Die Lösung dieser Aufgabe kennzeichnet sich durch eine Mehrschichtbahn, bestehend aus zwei zueinander gleichen, oberseitig bezw. unterseitig der Mehrschichtbahn angeordneten, homogenen Bahnen aus Kunststoff, der gut verschweißbar ist, eine hohe Witterungs-und Alterungsbeständigkeit sowie eine hohe UV-Strahlen-Beständigkeit, eine hohe Dehnbarkeit, eine hohe Zugfestigkeit und eine hohe chemische Beständigkeit hat und aus mindestens einer zwischen den vorgenannten Bahnen deckungsgleich angeordneten sowie mit letzteren unlösbar verbundenen Bahn aus Kunststoff mit einer gegenüber den äußeren Bahnen höheren Dampfdichtigkeit und mit mindestens annähernd gleichen mechanischen Eigenschaften wie die der äußeren Kunststoffbahnen.The solution to this problem is characterized by a multi-layer membrane, consisting of two equal to each other, respectively on the top. underside of the multilayer web arranged, homogeneous webs made of plastic, which is easy to weld, a high Weather and aging resistance as well as high UV radiation resistance, high ductility, high tensile strength and high chemical resistance has and of at least one between the aforementioned tracks congruent arranged as well as with the latter inextricably connected web made of plastic with an opposite the outer membranes have a higher vapor tightness and are at least approximately the same mechanical properties like those of the outer plastic sheets.

Durch diese Maßnahmen stehen sich beim Verschweißen von nebeneinander angeordneten Kunststoffdichtungsbahnen, wobei sich deren Randteile jeweils einander überlappen, stets gut verschweißbare Kunststoffbahnen gegenüber, so daß einerseits eine sichere und auch dichte Verbindung nebeneinander angeordneter Kunststoffdichtungsbahnen erreichbar ist.These measures stand side by side when welding arranged plastic sealing sheets, with their edge parts each other overlap, always well weldable plastic sheets opposite, so that on the one hand a secure and tight connection of plastic sealing sheets arranged next to one another is attainable.

Andererseits werden durch die zwischen den äußeren Kunststoffbahnen angeordneten Kunststoffbahnen mit gegenüber den äußeren Kunststoffbahnen höherer Dampfdichtigkeit auch solche Stoffe und Gase zurückgehalten, die die äußeren Kunststoffbahnen evtl. durchdrungen haben sollten.On the other hand, through the between the outer plastic sheets arranged plastic webs with compared to the outer plastic webs higher Vapor tightness also retained those substances and gases that the outer plastic sheets should have penetrated.

Dabei ist auch eine hohe mechanische Festigkeit der mehrschichtigen Kunststoffdichtungsbahn sichergestellt, die durch Einlagerung einer Bahn zum Beispiel aus als Folie ausgebildeten Aluminium nicht erreichbar ist, weil Aluminiumfolien keine ausreichende mechanische Festigkeit haben.There is also a high mechanical strength of the multilayer Plastic geomembrane ensured that by embedding a sheet for example from aluminum designed as a foil cannot be achieved because aluminum foils do not have sufficient mechanical strength.

Im Sinne der Aufgabe ist es förderlich, eine mittlere Kunststoffbahn mit einer hohen Dampfdichtigkeit gegen Kohlen-Wasserstoffe vorzusehen.In terms of the task, it is beneficial to have a medium-sized plastic sheet to be provided with a high vapor tightness against hydrocarbons.

Bevorzugterweise sind die Kunststoffbahnen miteinander stoffschlüssig, insbesondere durch Coextrusion verbunden.Preferably, the plastic sheets are materially bonded to one another, in particular connected by coextrusion.

Weitere Möglichkeiten zur homogenen Verbindung der Kunststoffbahnen sind in den Ansprüchen 4 bis 6 offenbart.Further possibilities for a homogeneous connection of the plastic sheets are disclosed in claims 4-6.

Eine fertigungstechnisch besonders günstige, als auch günstig zu verarbeitende und gegen aggressive Medien resistente Ausführungform ist dadurch gekennzeichnet, daß die äußeren Kunststoffbahnen aus Polyethylen, die mittlere Kunststoffbahn aus Polyester besteht.In terms of production technology, it is particularly inexpensive and also inexpensive to process and design that is resistant to aggressive media is characterized by that the outer plastic sheets made of polyethylene, the middle plastic sheet made of Polyester is made.

Unter Umständen bevorzugte Varianten sind hierzu in den Ansprüchen 8 bis 10 offenbart.Variants which may be preferred are in the claims 8-10 disclosed.

Eine vorteilhafte Weiterbildung des vorbeschriebenen Gegenstandes besteht noch darin, daß die der Verbesserung der Dampfdichtigkeit dienenden Kunststoffbahnen in die äußeren Kunststoffbahnen eingesiegelt sind, insbesondere derart, daß die Randteile der äußeren Kunststoffbahnen über den Rand der mittleren Kunststoffbahnen hinausreichen und miteinander verschweißt sind.An advantageous development of the subject matter described above still consists in the fact that the plastic sheets serving to improve the vapor tightness are sealed in the outer plastic sheets, in particular such that the Edge parts of the outer Plastic sheeting over the edge of the middle Reach out plastic sheets and are welded together.

Hierdurch ist die eingelagerte Kunststoffb-ahn, die möglicherweise nicht so resistent gegen aggressive Medien wie die äußeren Kunststoffbahnen ist, nunmehr auch im Bereich der Ränder von den äußeren Kunststoffbahnen sicher abgedeckt.As a result, the stored plastic sheet, which may is not as resistant to aggressive media as the outer plastic sheets, now also safely covered by the outer plastic sheets in the area of the edges.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawing and are described in more detail below.

Es zeigen: Fig. 1 bis 5 Teile zweier miteinander verschweißter, mehrschichtiger Kunststoffdichtungsbahnen jeweils im Schnitt.They show: FIGS. 1 to 5 parts of two multi-layered parts welded to one another Plastic geomembranes in each case in section.

Allen Ausführungformen ist gemeinsam, daß jeweils zwischen zwei Kunststoffbahnen 1 und 2 aus Polyethylen mindestens eine Kunststoffbahn 3 aus Kunststoff mit einer gegenüber Polyethylen höheren Dampfdichtigkeit angeordnet ist.All embodiments have in common that between two plastic sheets 1 and 2 made of polyethylene at least one plastic sheet 3 made of plastic with a is arranged higher vapor tightness than polyethylene.

Alle Kunststoffbahnen 1 und 3 sind über ihre gesamte Fläche miteinander unlösbar verbunden. Zudem sind in allen Fällen die einander benachbarten, mehrschichtigen Kunststoffdichtungsbahnen 4 und 5 so angeordnet, daß sich deren Randteile einander überlappen. In den Bereichen der Überlappungen ist mindestens eine über die gesamte Länge der miteinander verbundenen Kunststoffdichtungsbahnen 4 und 5 sich erstreckende Schweißnaht 6 angeordnet.All plastic sheets 1 and 3 are together over their entire surface inextricably linked. In addition, in all cases the adjacent, multilayered ones Plastic sealing sheets 4 and 5 arranged so that the edge parts of each other overlap. In the areas of overlap there is at least one over the whole Length of the interconnected plastic sealing sheets 4 and 5 extending Weld seam 6 arranged.

Wie aus der Fig. 2 ersichtlich, können in an sich bekannter Weise auch zwei mit Abstand nebeneinander angeordnete Schweißnähte 6 vorgesehen werden, um zwischen den beiden Schweißnähten einen mit Druckluft beaufschlagbaren Kanal zur Prüfung der Schweißnähte auf Dichtigkeit zu bilden.As can be seen from FIG. 2, in a manner known per se also two Weld seams arranged at a distance from one another 6 be provided in order to act on a pressurized air between the two weld seams Form channel for testing the weld seams for leaks.

In Fig. 1 besteht die mittlere Kunststoffbahn 3 aus Polyester.In Fig. 1, the middle plastic sheet 3 consists of polyester.

Gemäß Fig. 2 ist zwischen den beiden äußeren Kunststoffbahnen 1 und 2 aus Polyethylen eine Kunststoffbahn 3 aus Polyamid angeordnet, welche außer einer höheren Dampfdichtigkeit als Polyethylen gegen Kohlen-Wasserstoffe auch eine höhere chemische Beständigkeit aufweist.According to Fig. 2 is between the two outer plastic sheets 1 and 2 made of polyethylene, a plastic sheet 3 made of polyamide, which apart from one higher vapor tightness than polyethylene against hydrocarbons also a higher one has chemical resistance.

Figur 3 zeigt eine mehrschichtige Kunststoffdichtungsbahn, bei welcher zwischen zwei äußeren Kunststoffbahnen 1 und 2 aus Polyethylen eine Kunststoffbahn 3 aus Polyvinylfluorid eingelagert ist.Figure 3 shows a multilayer plastic sealing membrane in which a plastic sheet between two outer plastic sheets 1 and 2 made of polyethylene 3 made of polyvinyl fluoride is incorporated.

Gemäß Figur 4 sind zwischen zwei äußeren Kunststoffbahnen 1 und 2 aus Polyethylen drei Kunststoffbahnen 7 und 8 angeordnet, und zwar zwei Kunststoffbahnen 7 jeweils aus Polyethylenterephthalat und eine Kunststoffbahn 8 aus Polyamid, wobei letztere zwischen den Kunststoffbahnen 7 angeordnet ist, die jeweils einer Kunststoffbahn 1 bezw. 2 aus Polyethylen benachbart sind.According to FIG. 4, between two outer plastic webs 1 and 2 made of polyethylene, three plastic sheets 7 and 8 are arranged, namely two plastic sheets 7 each made of polyethylene terephthalate and a plastic sheet 8 made of polyamide, wherein the latter is arranged between the plastic webs 7, each of which is a plastic web 1 or 2 made of polyethylene are adjacent.

Gemäß Figur 5 reichen jeweils die Randteile der beiden äußeren Kunststoffbahnen 1 und 2 aus Polyethylen über den Rand der dazwischen angeordneten Kunststoffbahn 3, zum Beispiel aus Polyester, hinaus und sind miteinander verschweißt, so daß die mittlere Kunststoffbahn 3 völlig eingesiegelt ist.According to FIG. 5, the edge parts of the two outer plastic webs are sufficient in each case 1 and 2 made of polyethylene over the edge of the plastic sheet arranged in between 3, for example made of polyester, and are welded together so that the middle plastic sheet 3 is completely sealed.

Alle neuen, in der Beschreibung und/oder Zeichnung offenbarten Einzel- und Kombinationsmerkmale werden als erfindungswesentlich angesehen.All new items disclosed in the description and / or drawing and combination features are considered essential to the invention.

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Claims (11)

Patentansprüche: 1. Kunststoffdichtungsbahn für Anlagen zur Lagerung von wassergefährdenden Stoffen, insbesondere für Mülldeponien, gekennzeichnet durch eine Mehrschichtbahn, bestehend aus zwei zueinander gleichen, oberseitig bezw. unterseitig der Mehrschichtbahn angeordneten, homogenen Bahnen (1,2) aus Kunststoff, der gut verschweißbar ist, eine hohe Witterungs- und Alterungsbeständigkeit sowie eine hohe UV-Strahlen-Beständigkeit, eine hohe Dehnbarkeit, eine hohe Zugfestigkeit und eine hohe chemische Beständigkeit hat und aus mindestens einer zwischen den vorgenannten Bahnen deckungsgleich angeordneten sowie mit letzteren unlösbar verbundenen Bahn (3,7,8) aus Kunststoff mit einer gegenüber den äußeren Bahnen (1,2) höheren Dampfdichtigkeit und mit mindestens annähernd gleichen mechanischen Eigenschaften wie die der äußeren Kunststoffbahnen. Claims: 1. Plastic geomembrane for storage systems of substances hazardous to water, especially for landfills, characterized by a multilayer web, consisting of two identical to each other, bezw on the top. underside the multilayer web arranged, homogeneous webs (1,2) made of plastic, the good is weldable, a high weather and aging resistance as well as a high UV radiation resistance, high ductility, high tensile strength and a Has high chemical resistance and consists of at least one of the aforementioned Tracks arranged congruently and inextricably linked to the latter (3,7,8) made of plastic with a higher than the outer tracks (1,2) Vapor tightness and with at least approximately the same mechanical properties as the external ones Plastic sheeting. 2. Kunststoffdichtungsbahn nach Anspruch 1, gekennzeichnet durch eine mittlere Kunststoffbahn (3,7,8) mit einer hohen Dampfdichtigkeit gegen Kohlen-Wasserstoffe.2. Plastic sealing sheet according to claim 1, characterized by a medium plastic sheet (3,7,8) with a high vapor tightness against hydrocarbons. 3. Kunststdffdichtungsbahn nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kunststoffbahnen (1,2,3,7,8) miteinander stoffschlüssig, insbesondere durch Coextrusion verbunden sind.3. Kunststdffdichtungsbahn according to claim 1 or 2, characterized in that that the plastic webs (1,2,3,7,8) cohesively with one another, in particular through Coextrusion are connected. 4. Kunststoffdichtungsbahn nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kunststoffbahnen (1,2,3,7,8) durch chemische Behandlung, insbesondere durch Ätzen oder durch Oxydieren miteinander verbunden sind.4. Plastic sealing sheet according to claim 1 or 2, characterized in that that the plastic sheets (1,2,3,7,8) by chemical treatment, in particular by Etching or by oxidation are connected to one another. 5. Kunststoffdichtungsbahn nach Anspruch 1 oder 2, dadurch gekennzeichnt, daß die Kunststoffbahnen (1,2,3,7,8) miteinander mittels Kunststoff-Haftvermittlern, insbesondere mittels Acrylharzen oder mittels Polyurethane verbunden sind.5. Plastic sealing sheet according to claim 1 or 2, characterized in that that the plastic sheets (1,2,3,7,8) together by means of plastic adhesion promoters, are connected in particular by means of acrylic resins or by means of polyurethanes. 6. Kunststoffdichtungsbahn nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kunststoffbahnen (1,2,3,7,8) durch Corona-Vorbehandlung miteinander verbunden sind. 6. Plastic sealing sheet according to claim 1 or 2, characterized in that that the plastic sheets (1,2,3,7,8) are connected to one another by corona pretreatment are. 7. Kunststoffdichtungsbahn nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die äußeren Kunststoffbahnen (1,2) aus Polyethylen, die mittlere Kunststoffbahn (3) aus Polyester besteht. 7. Plastic sealing sheet according to one of the preceding claims, characterized characterized in that the outer plastic sheets (1,2) made of polyethylene, the middle Plastic sheet (3) consists of polyester. 8. Kunststoffdichtungsbahn nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß zwischen zwei äußeren Kunststoffbahnen (1,2) aus Polyethylen eine Kunststoffbahn (3) aus Polyamid angeordnet ist.8. Plastic sealing sheet according to one of the preceding claims, characterized characterized in that between two outer plastic sheets (1,2) made of polyethylene a plastic sheet (3) made of polyamide is arranged. 9. Kunststoffdichtungsbahn nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die mittlere Kunststoffbahn (3) aus Polyvinylfluorid besteht, die beidseitig mit je einer Kunststoffbahn (1,2) aus Polyethylen beschichtet ist.9. Plastic sealing sheet according to one of the preceding claims, characterized characterized in that the middle plastic sheet (3) consists of polyvinyl fluoride, which is coated on both sides with a plastic sheet (1,2) made of polyethylene. 10. Kunststoffdichtungsbahn nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß zwischen den äußeren Kunststoffbahnen (1,2) aus Polyethylen Kunststoffbahnen (7,8) aus Polyethylenterephthalat und aus Polyamid angeordnet sind.10. Plastic sealing sheet according to one of the preceding claims, characterized characterized in that between the outer plastic sheets (1,2) made of polyethylene Plastic webs (7,8) made of polyethylene terephthalate and polyamide are arranged. 11. Kunststoffdichtungsbahn nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die der Verbesserung der Dampfdichtigkeit dienenden Kunststoffbahnen (3,7,8) in die äußeren Kunststoffbahnen (1,2) eingesiegelt sind, insbesondere derart, daß die Randteile der äußeren Kunststoffbahnen (1,2) über den Rand der mittleren Kunststoffbahnen (3,7,8) hinausreichen und miteinander verschweißt sind.11. Plastic sealing sheet according to one of the preceding claims, characterized characterized in that the plastic webs serving to improve the vapor tightness (3, 7, 8) are sealed into the outer plastic sheets (1, 2), in particular in such a way that that the edge parts of the outer plastic sheets (1,2) over the edge of the middle Plastic sheets (3, 7, 8) reach out and are welded together.
DE19853514383 1985-04-20 1985-04-20 Plastic waterproofing sheet Withdrawn DE3514383A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19853514383 DE3514383A1 (en) 1985-04-20 1985-04-20 Plastic waterproofing sheet
EP86103816A EP0199099A3 (en) 1985-04-20 1986-03-20 Plastic sealing sheet

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DE19853514383 DE3514383A1 (en) 1985-04-20 1985-04-20 Plastic waterproofing sheet

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DE3514383A1 true DE3514383A1 (en) 1986-10-23

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518747A1 (en) * 1985-05-24 1986-11-27 Ewald Dörken GmbH & Co KG, 5804 Herdecke Plastic sealing sheet
DE3724882C1 (en) * 1987-07-28 1989-04-06 Reinhardt H W Prof Dr Ing Sealing system of several layers of glass panels for concrete constructions
DE8811270U1 (en) * 1988-09-07 1990-01-04 Fritz Landolt AG, Näfels Sealing membrane for landfills
EP0395836A1 (en) * 1989-05-05 1990-11-07 Hüls Troisdorf Aktiengesellschaft Plastic sheeting for sealing
EP0767052A1 (en) * 1995-10-02 1997-04-09 Sarna Patent- Und Lizenz-Ag Plastic sealing sheet
DE3841553C2 (en) * 1987-12-09 2002-04-18 Werner Doose Adhesive connection of plastic sealing sheets
EP2489509A1 (en) 2011-02-17 2012-08-22 Industrial Textiles & Plastics Limited Chemical Resistant Membrane

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518747A1 (en) * 1985-05-24 1986-11-27 Ewald Dörken GmbH & Co KG, 5804 Herdecke Plastic sealing sheet
DE3724882C1 (en) * 1987-07-28 1989-04-06 Reinhardt H W Prof Dr Ing Sealing system of several layers of glass panels for concrete constructions
DE3841553C2 (en) * 1987-12-09 2002-04-18 Werner Doose Adhesive connection of plastic sealing sheets
DE8811270U1 (en) * 1988-09-07 1990-01-04 Fritz Landolt AG, Näfels Sealing membrane for landfills
EP0395836A1 (en) * 1989-05-05 1990-11-07 Hüls Troisdorf Aktiengesellschaft Plastic sheeting for sealing
EP0767052A1 (en) * 1995-10-02 1997-04-09 Sarna Patent- Und Lizenz-Ag Plastic sealing sheet
EP2489509A1 (en) 2011-02-17 2012-08-22 Industrial Textiles & Plastics Limited Chemical Resistant Membrane

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