SK171198A3 - Liquid-permeable floor covering - Google Patents

Abstract

Liquid-permeable floor covering for floors that can be walked or driven on, and the like, made of two or more layers (1, 2), joined over the whole surface, of a cellular elastic plastic, with each floor-side layer (1) being considerably thicker than each surface-side layer (2), with the side of the covering in contact with the floor having in the corresponding floor-side layer liquid-drainage channels (3, 3') running in parallel and spaced apart formed in it, with further channels (4) branching off from these channels at intervals and running through the or each floor-side layer, these further channels (4) being cut or shaped into the or each floor-side layer (1) and opening downwards.

Description

LIQUID PERFORMANCE COVERING

Technical field

The invention relates to a liquid-permeable covering suitable for pavement and road surfaces.

BACKGROUND OF THE INVENTION

It is known to use liquid-permeable surface-strengthening elements for covering the soil and the like in order to drain surface water and the like. Such elements are made of artificial stone and laid in a bundle. This requires a relatively expensive shaping of the elements used and a considerable work effort in laying them with correspondingly high expense. In addition, the weight of the elements makes it difficult to handle and transport them.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a liquid-permeable filter-like coating which can be produced without great expense and can also be laid in a simple and quick manner. At the same time, the cover should ensure the correct drainage of the liquid.

The coating according to the invention is characterized by a combination of features that is formed from at least two planar, preferably glued, interconnected layers of cellular elastic plastic, each layer being substantially thicker from the soil than any layer on the surface side, preferably having substantially smaller cells as a layer on the side of the soil, on the covering side touching the soil, spaced-apart, preferably also intersecting, liquid-evacuating channels are provided in the associated layer, spaced apart from one another in the associated layer, that they extend from the liquid-evacuating channels at intervals from the soil side or from each soil side layer to further channels, where there are further channels in the soil side layer or in each soil side layer into this soil

The 31127 / H layers are cut or shaped and preferably open conically or stepped downwards.

This adaptation ensures optimum filtration and liquid evacuation with any large adaptation and relatively low weight as well as elastic formability of the coating. According to the invention, low durability is achieved with slight wear and it is ensured that drainage channels and material cells do not close on the surface.

According to a preferred embodiment of the invention, through holes are provided in the surface-side layer or in each surface-side layer, which open into the channels extending through the soil-side layer or each soil-side layer. This ensures that when the layer is folded from the surface under load, the transitional openings can widen downwards and clogging is avoided.

According to a further preferred embodiment of the invention, the coating is in the form of an expandable strip, which allows the coating to be deployed and easy to transport, as well as its rapid laying.

According to a further feature of the invention, the covering layers are formed from a cellular elastomer such as polyurethane (polyetherurethane, e.g. Sylomer®). Such elastomers may have e.g. specific gravity from 150 kg / m ³ to 680 kg / m ³ and ensure full-area power transmission. In addition, they exhibit extremely good behavior under dynamic loads, while becoming more rigid. Said elastomers are resistant to water, oil, fat, etc.

In the context of the invention, the coating can naturally also be composed of individual elements of any size, which are also bundled together.

A thin layer on the surface side serving as a surface of the surface is expediently bonded by gluing, as already mentioned, with the underlying layer on the soil side. However, a plurality of thin layers, or more than one layer on the soil side, can also be provided within the scope of the invention and can advantageously be bonded to one another.

The channels used to drain the liquid may be formed by shaping, e.g. when casting the coating or also by mechanical means, e.g. using a water jet.

31127 / H

According to the invention, the drainage effect and self-cleaning are additionally promoted by the elastic coating behavior when driving or passing through the "compression processes". In particular, it is ensured by the molding processes that the particles penetrating into the outflow openings are further transported. The sealing of the surface is thereby avoided.

In order to support the formation as well as the drainage of water, the liquid discharge channels on the underside of the covering contribute. As mentioned, these channels may also run in the cross direction, so that a network of channels is given.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail by means of specific exemplary embodiments shown in the drawings, in which: FIG. 1 and 2, a strip-shaped coating according to the invention in cross-section.

DETAILED DESCRIPTION OF THE INVENTION

Each of the illustrated coatings has one soil-side filter body layer 1 and one with this layer, for example by gluing a surface-mounted surface of the filter body layer 2 which is substantially thinner than the soil-side layer 1. Both layers 1, 2 are formed of a cellular, abrasion-resistant elastomer, e.g. liquid-permeable polyurethane. The thinner surface layer 2 in the embodiments of FIG. 1 significantly smaller cells than the thicker layer 1 from the soil. In the embodiment of FIG. 2, the two layers consist of the same cellular material.

As shown in FIG. 1 and 2, channels 3 which run parallel to one another are provided in the soil-engaging side or in the underside of the layer 1, which promote the ductility of the coating and serve to drain the liquid. In the embodiments shown, a crossing system of parallel channels 3 'may also be provided, so that a network of channels is formed. Further channels 4 can be spaced from the channels 3 and 3 'from the soil side 1 at a distance from one another, as shown in FIG. 2. The liquid removal channels 3 and 3 'and the other channels 4 may be formed by shaping, e.g. when casting the coating or mechanically, e.g. by

31127 / H water jet or also punching. The channels 4 may also be conical or stepwise opening downwards.

In the surface-side layer 2, through holes 5 are formed which open into the channels extending through the soil-side layer or each soil-side layer.

The illustrated cover may be formed as a strip or as a single element that may be deployed. Various variants of the exemplified embodiment are possible within the scope of the invention, in particular as regards the materials used and the number of layers. Thus, a plurality of layers may be provided on the soil side or on the surface side, all of which have the same cell size or in which the cell size in each of the following layers increases from top to bottom.

The coating according to the invention, or part thereof, can also be used within the invention to fill in stable frame elements of soil consolidation, liquid drainage grids and the like.

Claims (6)

PATENT CLAIMS A liquid-permeable covering for pavements and roads and the like, characterized in that it is formed from at least two mutually planar, preferably by gluing, joined layers (1, 2) of cellular elastic plastic, each layer (1) on the side the soil is substantially thicker than any surface-side layer (2), which preferably has substantially smaller cells than the soil-side layer, and that the soil-side covering surface is spaced parallel to each other in the assigned soil-side layer preferably also intersecting fluid channels (3, 3 ') that intersect, and that from the fluid channels (3, 3') spaced apart from one another by a soil-side layer or by each soil-side layer further channels (4), wherein the other channels (4) are cut or shaped in the soil-side layer (1) or in each soil-side layer (1) therein, and preferably open conically or stepwise downwards. Covering according to claim 1, characterized in that in the surface-side layer (2) or in each surface-side layer (2), through holes (5) are provided which open into the channels (4) extending through the layer (1) by the soil, or by each soil layer. Covering according to claim 1 or 2, characterized in that it is in the form of an expandable strip. Coating according to one of Claims 1 to 3, characterized in that the coating layers (1, 2) are formed from a cellular elastomer, preferably polyurethane. Covering according to one of claims 1 to 4, characterized in that it is composed of a plurality of layers on the surface side and preferably also of a plurality of layers on the soil side. Coverage according to claim 5, characterized in that the cells in all layers are of equal size or that the cell size in each of the following layers increases from top to bottom.