NL1029940C1 - Artificial grass structure is formed by artificial grass mat under which is drainage mat for dispersal of rain water - Google Patents

Abstract

The artificial grass structure (1) is formed by an artificial grass mat (5), under which is a drainage mat (7) for dispersal of rain water. The drainage mat is formed by a layer of plastic foam, which on the side turned away from the artificial grass mat is provided with a grid of grooves (11) squarely positioned on each other. At the crossing points of the grooves, through holes (13) in the layer are provided. Between the artificial grass mat and the drainage mat is a textile layer (15), preferably a root sheet, and between the drainage mat and the roof cover (3) is a watertight sheet.

Description

Synthetic turf structure for a hard, waterproof surface DESCRIPTION: 5

FIELD OF THE INVENTION

The invention relates to an artificial grass structure for on a hard watertight surface, comprising an artificial grass mat with a drainage mat underneath.

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State of the art.

Such an artificial grass structure is generally known. A drawback of the known artificial grass structure is that water, in particular rainwater, is difficult to drain. 15

Summary of the invention.

An object of the invention is to provide an artificial grass structure of the type described in the preamble in which water can be discharged better. To this end, the artificial grass structure according to the invention is characterized in that the drainage mat comprises a layer of foamed plastic, wherein on the side remote from the artificial grass mat a groove of grooves is present and holes extending through the grid points are present in the layer. Because of this groove grid and hole pattern, the water can always drain to the lowest areas. By ensuring that the lowest areas are present at the edges of the artificial grass mat, no water remains in the artificial grass structure.

The grid is preferably formed by grooves perpendicular to each other. An embodiment of the artificial grass structure according to the invention is characterized in that a layer of textile is present between the artificial grass mat and the drainage mat, for example anti-rooting cloth.

A further embodiment of the artificial grass structure according to the invention is characterized in that a film underneath the drainage mat is present on the side remote from the artificial grass mat, preferably a waterproof film of 1 mm thickness.

1029940-2

The invention also relates to a drainage mat for the artificial grass structure according to the invention. With regard to the drainage mat, the invention is characterized in that the drainage mat comprises a layer of foamed plastic which is provided on one side with a grid of grooves, wherein through holes are present in the layer at the grid points.

An embodiment of the drainage mat according to the invention is characterized in that the grid is formed by grooves which are perpendicular to each other.

Brief description of the drawings.

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The invention will be explained in more detail below with reference to an exemplary embodiment of the artificial grass structure according to the invention shown in the drawings. Hereby shows:

Figure 1 shows an embodiment of the artificial grass structure according to the invention present on a roof covering;

Figure 2 shows a bottom view of the drainage mat of the artificial grass structure shown in Figure 1; and

Figure 3 is a side view of the drainage mat shown in Figure 2.

20 Detailed description of the drawings.

Figure 1 shows an embodiment of the artificial grass structure 1 according to the invention. The artificial grass structure 1 is present on a roof covering 3 and is made up of an artificial grass mat 5 with a drainage mat 7 below for drainage of rainwater. The drainage mat 7 is formed by a layer of foamed plastic which, on the side 9 remote from the artificial grass mat (see Figure 2), is provided with a grid of perpendicular grooves 11. Located at the intersections of the grooves 11, or at the grid points. holes 13 in the layer.

Between the artificial grass mat 5 and the drainage mat 7 there is a layer of textile material, for example root cloth, and between the drainage mat 7 and the roof covering 3 a waterproof film is present.

In figures 2 and 3 the drainage mat 7 of the 1029940 shown in figure 1 is 3 shows an artificial grass structure in bottom view and side view, wherein the grid of grooves 11 in the underside 9 of the layer of foam plastic and the holes 13 are clearly visible through the layer.

Although in the foregoing the invention has been elucidated with reference to the drawings, it must be stated that the invention is by no means limited to the embodiment shown in the drawings. The invention also extends to all embodiments deviating from the embodiment shown in the drawings within the scope defined by the claims.

1029940-

Claims (6)

An artificial grass structure for on a hard, water-tight surface, comprising an artificial grass mat with a drainage mat underneath, characterized in that the drainage mat comprises a layer of foamed plastic, wherein on the side remote from the artificial grass mat a grid of grooves is present and continues at the grid points holes are present in the layer. Artificial grass structure according to claim 1, characterized in that the grid is formed by grooves which are perpendicular to each other. 3. An artificial grass structure according to claim 1 or 2, characterized in that a layer of textile is present between the artificial grass mat and the drainage mat. Artificial grass structure according to claim 1,2 or 3, characterized in that a foil is present underneath the drainage mat on the side remote from the artificial grass mat. 5. Drainage mat for the artificial grass structure according to any one of the preceding claims, characterized in that the drainage mat comprises a layer of foamed plastic which is provided on one side with a grid of grooves, whereby through holes 15 are present in the layer at the grid points. Drainage mat according to claim 5, characterized in that the grid is formed by grooves perpendicular to each other. 1029940 '