EP0064140B1 - Surfacing for open-air areas - Google Patents

Surfacing for open-air areas Download PDF

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Publication number
EP0064140B1
EP0064140B1 EP82101711A EP82101711A EP0064140B1 EP 0064140 B1 EP0064140 B1 EP 0064140B1 EP 82101711 A EP82101711 A EP 82101711A EP 82101711 A EP82101711 A EP 82101711A EP 0064140 B1 EP0064140 B1 EP 0064140B1
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EP
European Patent Office
Prior art keywords
water
grass
permeable
ground covering
artificial grass
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Expired
Application number
EP82101711A
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German (de)
French (fr)
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EP0064140A3 (en
EP0064140A2 (en
Inventor
Hans-Joachim Friedrich
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.)
JF Adolff AG
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JF Adolff AG
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Publication date
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Application filed by JF Adolff AG filed Critical JF Adolff AG
Priority to AT82101711T priority Critical patent/ATE14600T1/en
Publication of EP0064140A2 publication Critical patent/EP0064140A2/en
Publication of EP0064140A3 publication Critical patent/EP0064140A3/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23979—Particular backing structure or composition

Definitions

  • the invention relates to a floor covering for open spaces, in particular for games and sports facilities, with an artificial turf as a surface layer and with a filling of granular material, in particular sand, between the pile threads of the turf, over which the free ends of the pile threads protrude upwards.
  • an approximately 20 mm high synthetic grass or an artificial turf with a water-impermeable back is used, which is produced in such a way that a tufted turf material is provided on the back with a continuous rubber-like layer.
  • This artificial turf is then provided with a filling of granular material from the top, namely with a silicon-based material with additives.
  • a disadvantage of the known floor covering is that, owing to the water-impermeable coating on the back of the artificial lawn, rainwater and the like can only be drained off along the edge of the floor covering, with the risk that in heavy rain, for example in a thunderstorm, the granular material of the filling is washed out of the pole of the lawn, so that the floor covering no longer has the desired uniform surface quality, especially since the pile threads of the lawn are too long after the filling has been washed out.
  • the object of the invention is to provide an improved floor covering of the type described in the introduction, in which the risk of the filling of granular material being washed out is reduced to a minimum.
  • the decisive advantage of the floor covering according to the invention over the previously known floor covering is that melt water and rain water, even if they occur in considerable quantities, through the artificial turf and the filter mat through to the underside of the floor covering and into the drainage system provided there can flow away, so that a washing away of the filling material between the pile threads of the lawn to the edge areas is prevented.
  • the filter mat also prevents material from the underground from migrating from below through the drainage openings of the artificial turf upwards into the pole of the turf.
  • a grated lawn with coated ribs on its rear is provided as the water-permeable artificial lawn, since good water permeability can be achieved with this type of artificial lawn. It is particularly advantageous that the ribs projecting from the adjacent areas can also be well laminated to the filter mat, in particular by thermal welding.
  • knobs made of elastic material, the knobs again ensuring good water permeability and also being available as protruding points or surface areas for attaching the filter mat, which are preferably available as Fleece or felt mat is formed.
  • the drawing shows a section of an artificial lawn 10, on the underside of which a filter mat 12 is laminated.
  • the filter mat 12 is laminated onto the lawn 10 in such a way that of the grid-like webs or ribs 14 of the base fabric of the lawn, at least the ribs running parallel to one another in one direction - in the exemplary embodiment, those running from left to right in the drawing Ribs - be provided with a coating which allows the filter mat 12 to be laminated onto the artificial turf 10, preferably by thermal welding.
  • the coating of the ribs 14 does not need to be made of a thermoplastic material, but can also consist, for example, of a curable plastic which is first applied in the sticky state and with which the filter mat 12 is then connected or glued before the curing has ended .
  • the artificial turf 10 has pole bottoms 18 projecting upward from the lattice-like base fabric, which in practice are often formed by narrow plastic ribbons in practice, in particular when using Raschel fabric for the turf 10, and which, according to the invention, are longer than with a conventional artificial one Lawn and for example have a length of about 20 mm.
  • a granular filler material in particular sand, is applied to the top of the lawn 10 to complete the floor covering according to the invention and distributed so that there is a uniform layer of granular material or a layer of sand 16, the height of which is selected so that the free ends of the pile threads 18 protrude above the surface of the layer of sand 16, for example with a length of about 5 mm.
  • a floor covering has proven itself excellently, for example, for tennis courts, since with good tread elasticity of the floor covering, a defined jumping of the balls is achieved, as is appreciated by the tennis players.
  • the floor covering according to the invention unlike the floor coverings of this type used hitherto, there is no longer any danger that the filler material will be washed away to a considerable extent to the edges of the field and from the pole of the artificial turf in the event of heavy rain or snowmelt. In this way, a significant improvement in the stability of the floor covering with regard to the removal of surface water is achieved with little additional effort — it is only necessary to provide the filter mat or to replace a mat previously provided for improving the elasticity of the step with a suitable filter mat.
  • a lawn tufted on a water-permeable base fabric can also be used as the water-permeable lawn, in which the ribs formed by the tufting on the back of the base fabric are provided with a coating.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The invention relates to a ground covering for open spaces, with which a water-permeable filter mat impervious to granular material is bonded to the underside of a water-permeable artificial grass so that a filling of granular material in the pile of the grass will not be swept away to the edges of the surface covered by the ground covering even in heavy rain since the water may drain immediately through the artificial grass and the filter mat to the underside of the ground covering.

Description

Die Erfindung betrifft einen Bodenbelag für Freiflächen, insbesondere für Spiel- und Sportanlagen, mit einem künstlichen Rasen als Oberflächenschicht und mit einer Füllung aus körnigem Material, insbesondere Sand, zwischen den Polfäden des Rasens, über die die freien Enden der Polfäden nach oben vorstehen.The invention relates to a floor covering for open spaces, in particular for games and sports facilities, with an artificial turf as a surface layer and with a filling of granular material, in particular sand, between the pile threads of the turf, over which the free ends of the pile threads protrude upwards.

Bei einem bekannten Bodenbelag dieser Art wird ein ca. 20 mm hohes synthetisches Gras bzw. ein künstlicher Rasen mit wasserundurchlässigem Rücken verwendet, welcher in der Weise hergestellt wird, daß ein getuftetes Rasenmaterial auf der Rückseite mit einer durchgehenden gummiartigen Schicht versehen wird. Dieser künstliche Rasen wird dann von der Oberseite her mit einer Füllung aus körnigem Material versehen, und zwar mit einem Material auf Siliciumbasis mit Zusatzstoffen.In a known floor covering of this type, an approximately 20 mm high synthetic grass or an artificial turf with a water-impermeable back is used, which is produced in such a way that a tufted turf material is provided on the back with a continuous rubber-like layer. This artificial turf is then provided with a filling of granular material from the top, namely with a silicon-based material with additives.

Nachteilig an dem bekannten Bodenbelag ist es, daß wegen der wasserundurchlässigen Beschichtung auf der Rückseite des künstlichen Rasens eine Ableitung von Regenwasser und dergleichen nur längs des Randes des Bodenbelages erfolgen kann, wobei die Gefahr besteht, daß bei einem starken Regen, beispielsweise bei einem Gewitterregen, das körnige Material der Füllung aus dem Pol des Rasens ausgeschwemmt wird, so daß der Bodenbelag schließlich nicht mehr die gewünschte gleichmäßige Oberflächenqualität besitzt, zumal die Polfäden des Rasens nach einem Ausschwemmen der Füllung viel zu lang sind.A disadvantage of the known floor covering is that, owing to the water-impermeable coating on the back of the artificial lawn, rainwater and the like can only be drained off along the edge of the floor covering, with the risk that in heavy rain, for example in a thunderstorm, the granular material of the filling is washed out of the pole of the lawn, so that the floor covering no longer has the desired uniform surface quality, especially since the pile threads of the lawn are too long after the filling has been washed out.

Ein derartiger Belag ist auch aus der US-A-2 995 079 bekannt. Dabei wird jedoch das Problem des Wasserabflusses nicht näher erwähnt und auf entsprechende Maßnahmen nicht eingetreten.Such a covering is also known from US-A-2 995 079. However, the problem of water drainage is not mentioned in detail and no corresponding measures are taken.

Ausgehend vom Stande der Technik und der vorstehend aufgezeichneten Problematik liegt der Erfindung die Aufgabe zugrunde, einen verbesserten Bodenbelag der eingangs beschriebenen Art anzugeben, bei dem die Gefahr eines Ausschwemmens der Füllung aus körnigem Material auf ein Minimum reduziert ist.On the basis of the prior art and the problems recorded above, the object of the invention is to provide an improved floor covering of the type described in the introduction, in which the risk of the filling of granular material being washed out is reduced to a minimum.

Diese Aufgabe wird bei einem Bodenbelag der eingangs beschriebenen Art gemäß der Erfindung dadurch gelöst, daß als künstlicher Rasen ein wasserdurchlässiger künstlicher Rasen vorgesehen ist und daß an die Rückseite des Rasens eine wasserdurchlässige, für das körnige Material undurchlässige Filtermatte ankaschiert ist.This object is achieved with a floor covering of the type described at the outset according to the invention in that a water-permeable artificial lawn is provided as the artificial lawn and that a water-permeable filter mat which is impermeable to the granular material is laminated to the rear of the lawn.

Der entscheidende Vorteil des Bodenbelages gemäß der Erfindung gegenüber dem vorbekannten Bodenbelag besteht darin, daß Schmelzwasser und Regenwasser auch dann, wenn sie in erheblichen Mengen anfallen, durch den künstlichen Rasen und die Filtermatte hindurch zur Unterseite des Bodenbelages in den Untergrund bzw. das dort vorgesehene Drainagesystem abfließen können, so daß ein Wegschwemmen des Füllmaterials zwischen den Polfäden des Rasens zu den Randbereichen verhindert wird. Gleichzeitig verhindert die Filtermatte aber auch, daß Material aus dem Untergrund von unten her durch die Ablauföffnungen des künstlichen Rasens hindurch nach oben in den Pol des Rasens wandert.The decisive advantage of the floor covering according to the invention over the previously known floor covering is that melt water and rain water, even if they occur in considerable quantities, through the artificial turf and the filter mat through to the underside of the floor covering and into the drainage system provided there can flow away, so that a washing away of the filling material between the pile threads of the lawn to the edge areas is prevented. At the same time, the filter mat also prevents material from the underground from migrating from below through the drainage openings of the artificial turf upwards into the pole of the turf.

Als günstig hat es sich erwiesen, wenn als wasserdurchlässiger künstlicher Rasen ein geraschelter Rasen mit beschichteten Rippen auf seiner Rückseite vorgesehen ist, da sich mit dieser Art von künstlichem Rasen eine gute Wasserdurchlässigkeit erzielen läßt. Dabei ist es besonders vorteilhaft, daß die gegenüber den angrenzenden Bereichen vorstehenden Rippen auch gut an die Filtermatte ankaschiert werden können, insbesondere durch thermische Verschweißung.It has proven to be advantageous if a grated lawn with coated ribs on its rear is provided as the water-permeable artificial lawn, since good water permeability can be achieved with this type of artificial lawn. It is particularly advantageous that the ribs projecting from the adjacent areas can also be well laminated to the filter mat, in particular by thermal welding.

Vorteilhaft ist ferner die Verwendung eines wasserdurchlässigen künstlichen Rasens, der an seiner Rückseite mit Noppen aus elastischem Material versehen ist, wobei die Noppen wieder eine gute Wasserdurchlässigkeit gewährleisten und ebenfalls als vorstehende Punkte bzw. Flächenbereich für das Ankaschieren der Filtermatte zur Verfügung stehen, die vorzugsweise als Vlies- bzw. Filzmatte ausgebildet ist.It is also advantageous to use a water-permeable artificial turf, which is provided on the back with knobs made of elastic material, the knobs again ensuring good water permeability and also being available as protruding points or surface areas for attaching the filter mat, which are preferably available as Fleece or felt mat is formed.

Weitere Einzelheiten und Vorteile der Erfindung werden nachstehend anhand einer Zeichnung noch näher erläutert, deren einzige Figur eine schematische perspektivische Darstellung einer bevorzugten Ausführungsform eines Bodenbelages gemäß der Erfindung, schräg von unten gesehen, zeigt.Further details and advantages of the invention are explained in more detail below with reference to a drawing, the single figure of which shows a schematic perspective illustration of a preferred embodiment of a floor covering according to the invention, seen obliquely from below.

Im einzelnen zeigt die Zeichnung ein Teilstück eines künstlichen Rasens 10, an dessen Unterseite eine Filtermatte 12 ankaschiert ist. Das Ankaschieren der Filtermatte 12 an den Rasen 10 erfolgt dabei in der Weise, daß von den gitterartig verlaufenden Stegen bzw. Rippen 14 des Grundgewebes des Rasens mindestens die in einer Richtung parallel zueinander verlaufenden Rippen - beim Ausführungsbeispiel die in der Zeichnung von links nach rechts verlaufenden Rippen - mit einer Beschichtung versehen werden, die ein Ankaschieren der Filtermatte 12 an den künstlichen Rasen 10 gestattet, und zwar vorzugsweise durch thermische Verschweißung. Die Beschichtung der Rippen 14 braucht jedoch nicht aus einem thermoplastischen Material zu bestehen, sondern kann beispielsweise auch aus einem aushärtbaren Kunststoff bestehen, der zunächst im klebrigen Zustand aufgebracht wird und mit dem dann noch vor der Beendigung des Aushärtens die Filtermatte 12 verbunden bzw. verklebt wird.In detail, the drawing shows a section of an artificial lawn 10, on the underside of which a filter mat 12 is laminated. The filter mat 12 is laminated onto the lawn 10 in such a way that of the grid-like webs or ribs 14 of the base fabric of the lawn, at least the ribs running parallel to one another in one direction - in the exemplary embodiment, those running from left to right in the drawing Ribs - be provided with a coating which allows the filter mat 12 to be laminated onto the artificial turf 10, preferably by thermal welding. However, the coating of the ribs 14 does not need to be made of a thermoplastic material, but can also consist, for example, of a curable plastic which is first applied in the sticky state and with which the filter mat 12 is then connected or glued before the curing has ended .

Der künstliche Rasen 10 weist von dem gitterartigen Grundgewebe nach oben abstehende Polföden 18 auf, die in der Praxis, insbesondere bei der Verwendung von Raschelware für den Rasen 10, häufig durch schmale Kunststoffbändchen gebildet sind und die gemäß der Erfindung länger sind als bei einem üblichen künstlichen Rasen und beispielsweise eine Länge von etwa 20 mm aufweisen.The artificial turf 10 has pole bottoms 18 projecting upward from the lattice-like base fabric, which in practice are often formed by narrow plastic ribbons in practice, in particular when using Raschel fabric for the turf 10, and which, according to the invention, are longer than with a conventional artificial one Lawn and for example have a length of about 20 mm.

Wenn nun der wasserdurchlässige künstliche Rasen 10 mit der dauerhaft ankaschierten Filtermatte auf dem vorbereiteten, vorzugsweise ebenfalls wasserdurchlässigen bzw. mit einem Drainagesystem versehenen Untergrund verlegt ist, wird zur Fertigstellung des erfindungsgemäßen Bodenbelages auf die Oberseite des Rasens 10 ein körniges Füllmaterial, insbesondere Sand, aufgebracht und so verteilt, daß sich eine gleichmäßige Schicht aus körnigem Material bzw. eine Sandschicht 16 ergibt, deren Höhe so gewählt wird, daß die freien Enden der Polfäden 18 über die Oberfläche der Sandschicht 16 nach oben vorstehen, beispielsweise mit einer Länge von etwa 5 mm. Ein derartiger Bodenbelag hat sich beispielsweise für Tennisplätze hervorragend bewährt, da bei guter Trittelastizität des Bodenbelages auch ein definiertes Springen der Bälle erreicht wird, wie es von den Tennisspielern geschätzt wird. Andererseits besteht bei dem erfindungsgemäßen Bodenbelag, anders als bei den bisher verwendeten Bodenbelägen dieser Art, keine Gefahr mehr, daß das Füllmaterial bei einem kräftigen Regen oder bei der Schneeschmelze in beachtlichem Umfang zu den Spielfeldrändern und aus dem Pol des künstlichen Rasens herausgeschwemmt wird. Auf diese Weise wird mit geringem zusätzlichen Aufwand - es ist lediglich die Filtermatte vorzusehen bzw. eine bisher zur Verbesserung der Trittelastizität vorgesehene Matte gegen eine geeignete Filtermatte auszuwechseln - eine wesentliche Verbesserung der Stabilität des Bodenbelages hinsichtlich der Abführung von Oberflächenwasser erreicht.If the water-permeable artificial lawn 10 is now laid with the permanently laminated filter mat on the prepared, preferably also water-permeable or provided with a drainage system, a granular filler material, in particular sand, is applied to the top of the lawn 10 to complete the floor covering according to the invention and distributed so that there is a uniform layer of granular material or a layer of sand 16, the height of which is selected so that the free ends of the pile threads 18 protrude above the surface of the layer of sand 16, for example with a length of about 5 mm. Such a floor covering has proven itself excellently, for example, for tennis courts, since with good tread elasticity of the floor covering, a defined jumping of the balls is achieved, as is appreciated by the tennis players. On the other hand, with the floor covering according to the invention, unlike the floor coverings of this type used hitherto, there is no longer any danger that the filler material will be washed away to a considerable extent to the edges of the field and from the pole of the artificial turf in the event of heavy rain or snowmelt. In this way, a significant improvement in the stability of the floor covering with regard to the removal of surface water is achieved with little additional effort — it is only necessary to provide the filter mat or to replace a mat previously provided for improving the elasticity of the step with a suitable filter mat.

Abschließend sei noch darauf hingewiesen, daß als wasserdurchlässiger Rasen auch ein auf einem wasserdurchlässigen Grundgewebe getufteter Rasen verwendet werden kann, bei dem die durch das Tuften auf der Rückseite des Grundgewebes entstandenen Rippen mit einer Beschichtung versehen sind.Finally, it should also be pointed out that a lawn tufted on a water-permeable base fabric can also be used as the water-permeable lawn, in which the ribs formed by the tufting on the back of the base fabric are provided with a coating.

Claims (5)

1. Ground covering for open spaces, in particular for recreation and sports grounds, with artificial grass as the surface layer and with a filling (16) comprising granular material, in particular sand, between the pile threads (18) of the grass, beyond which the free ends of the pile threads project upwards, characterised in that water-permeable artificial grass (10) is provided as artificial grass and that a water-permeable filter mat (12) which is impervious to the granular material is bonded onto the reverse side of the grass (10).
2. Ground covering according to claim 1, characterised in that grass in the form of a raschel- type knitting having coated ribs (14) on its revers side is provided as water-permeable articial grass (10).
3. Ground covering according to claim 2, characterised in that the filter matting is designed as a fleece mat (12) and bonded onto the coating of the ribs (14).
4. Ground covering according to claim 1, characterised in that nubs of elastic material are provided on the reverse side of the water-permeable artificial grass (10) and that the filter mat (12) is bonded onto the nubs.
5. Ground covering according to claim 1, characterised in that tufted grass on a water-permeable foundation fabric having coated ribs (14) on its reverse side is provided as water-permeable artificial grass (10).
EP82101711A 1981-04-23 1982-03-05 Surfacing for open-air areas Expired EP0064140B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82101711T ATE14600T1 (en) 1981-04-23 1982-03-05 FLOORING FOR OPEN AREAS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813116231 DE3116231A1 (en) 1981-04-23 1981-04-23 FLOORING FOR FREE AREAS
DE3116231 1981-04-23

Publications (3)

Publication Number Publication Date
EP0064140A2 EP0064140A2 (en) 1982-11-10
EP0064140A3 EP0064140A3 (en) 1983-04-20
EP0064140B1 true EP0064140B1 (en) 1985-07-31

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ID=6130711

Family Applications (1)

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EP82101711A Expired EP0064140B1 (en) 1981-04-23 1982-03-05 Surfacing for open-air areas

Country Status (6)

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US (1) US4444815A (en)
EP (1) EP0064140B1 (en)
JP (1) JPS57197302A (en)
AT (1) ATE14600T1 (en)
CA (1) CA1177501A (en)
DE (2) DE3116231A1 (en)

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US10689824B2 (en) * 2010-09-13 2020-06-23 Watershed Geosynthetics Llc Synthetic ground cover system for erosion protection for use with or without a sand/soil ballast
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Also Published As

Publication number Publication date
EP0064140A3 (en) 1983-04-20
DE3116231A1 (en) 1982-11-11
DE3264990D1 (en) 1985-09-05
ATE14600T1 (en) 1985-08-15
JPS57197302A (en) 1982-12-03
CA1177501A (en) 1984-11-06
EP0064140A2 (en) 1982-11-10
US4444815A (en) 1984-04-24

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