FR2735169A1 - Swimming pool wall and/or base structure and inner lining - Google Patents

Abstract

The structure consists of a masonry layer (14) forming the pool (16), made with an inner polymer lining (18) facing towards the water, and a protective layer (20) between the two. The protective layer is made from at least two layers of polymer foam, one in contact with the masonry and the other with the lining, with the outer layer (in contact with the lining) being 2-4 times, and pref. 3 times, denser than the inner layer. The two layers are of reticulated polyethylene or PVC foam, the inner one having a thickness of 2-7 mm and a density of 15-50 kg/m<3>, and the outer one a thickness of 2-5 mm and a density of 30-120 kg/m<3>.

Description

The present invention relates to a wall and / or bottom structure for a swimming pool and a protective mat for this structure.

A wall and / or bottom structure for a swimming pool is already known in the state of the art, of the type comprising, on the one hand, a masonry delimiting a basin intended to be filled with water, and on the other hand, a coating comprising a polymer covering sheet covering the surface of the masonry facing the water and a protective mat interposed between the masonry and the covering sheet.

The masonry is for example a masonry of concrete, concrete blocks or a brickwork masonry. Rough masonry is generally coated with a layer of smoothing cement.

The protective mat is made, for example, from a woven or non-woven material. It is interposed between the smoothing layer and the covering sheet, which is generally made of polyvinyl chloride (PVC).

The object of the invention is to simplify the manufacture and to reduce the cost of the wall and / or bottom structure for a swimming pool, in particular by allowing the elimination of the smoothing cement layer, this by optimizing the appearance and the comfort. of the coating.

To this end, the invention relates to a wall and / or bottom structure for a swimming pool of the aforementioned type, characterized in that the protective mat comprises at least two successive layers of polymer foam, the internal one being in contact with the masonry and the other outer being in contact with the covering sheet, the density of the outer layer being greater than the density of the inner layer by a ratio of between 2 and 4, preferably substantially equal to 3.

According to other characteristics of this structure:
- the outer layer is thinner than the inner layer, preferably in a thickness ratio substantially equal to 2/5
- the density of the inner layer is between 15 and 50 kg / m3, and the density of the outer layer is between 30 and 120 kg / m3
- the thickness of the inner layer is between 2 and 7 mm, and the thickness of the outer layer is between 2 and 5 mm
- the internal and external layers are in crosslinked polyethylene foam or polyvinyl chloride (PVC) foam.

The subject of the invention is also a protective mat for a wall and / or bottom structure for a swimming pool, of the type intended to be interposed between a masonry and a covering sheet of polymer, characterized in that it comprises at the at least two successive layers of polymer foam, one internal and the other external, the density of the external layer being greater than the density of the internal layer by a ratio of between 2 and 4, preferably substantially equal to 3.

According to other characteristics of this carpet:
- the outer layer is thinner than the inner layer, preferably in a thickness ratio substantially equal to 2/5
- the density of the internal layer is between 15 and 50 kg / m3, and the density of the external layer (20E) is between 30 and 120 kg / m3;
- the thickness of the inner layer is between 2 and 7 mm, and the thickness of the outer layer is between 2 and 5 mm
- the internal and external layers are in crosslinked polyethylene foam or polyvinyl chloride (PVC) foam.

The invention will be better understood on reading the description which will follow, given solely by way of example and made with reference to the appended drawings in which
- Figure 1 is a schematic sectional elevation view of a wall and / or bottom structure for a swimming pool according to the invention;
- Figure 2 is a detail view of the protective mat of the structure shown in Figure 1.

There is shown in Figure 1 a wall and / or bottom structure for a swimming pool according to the invention, designated by the general reference 10.

This structure 10 is built in the ground 12.

It comprises, on the one hand, a masonry 14 delimiting a basin 16 intended to be filled with water, and on the other hand, a coating comprising a covering sheet 18 of polymer covering the surface of the masonry facing the water and a protective mat 20 interposed between the masonry 14 and the covering sheet 18.

The masonry 14 is manufactured according to a conventional process, for example from concrete, concrete blocks or concrete blocks.

The surface of the masonry 14 in contact with the water has a rough appearance.

The covering sheet is of the conventional type, for example made of polyvinyl chloride.

Referring to Figure 2, in which the protective mat 20 is shown in more detail, it can be seen that the latter comprises two successive layers of polymer foam, one internal 20I in contact with the masonry 14 and the other external 20E in contact with the covering sheet 18.

The density of the outer layer 20E is greater than the density of the inner layer 20I by a ratio of between 2 and 4. In the example illustrated, this density ratio is also substantially at 3.

The outer layer 20E is thinner than the inner layer 201. In the example illustrated, the thickness ratio between the outer and inner layers is substantially equal to 2/5.

The carpet 20 is glued by means of a conventional adhesive to the masonry 14. The carpet is generally not in one piece but is made up of several contiguous strips.

According to a preferred embodiment of the carpet 20, the density of the inner layer 20I is between 15 and 50 kg / m 3 and the density of the outer layer 20E is between 30 and 120 kg / m 3. In addition, according to this preferred embodiment, the thickness of the internal layer 20I is between 2 and 7 mm, and the thickness of the external layer 20E is between 2 and 5 mm.

The successive layers of the carpet 20 are made, for example, of crosslinked polyethylene foam or of polyvinyl chloride (PVC). The polymer foams constituting the two layers are identical or different.

The layers 20I, 20E are fixed to one another according to a conventional method, for example by gluing or by contact welding of the heated contiguous surfaces.

The inner layer 20I of the carpet is intended to absorb the irregularities of the rough surface of the masonry 14. The outer layer 20E of the carpet is intended to prevent the piercing of the carpet by the most important asperities of the coated surface of the masonry 14.

The invention has many advantages.

The carpet according to the invention very effectively protects the covering sheet by forming a smooth and very comfortable masonry coating, this even when the coated surface of the masonry has a rough appearance.

Of course, the carpet according to the invention can be glued to a masonry coated with a layer of smoothing cement. In this case, the aesthetics and comfort of the masonry coating are further optimized.

Furthermore, the carpet according to the invention provides the coating with better thermal insulation and better resistance to water or water vapor absorption than conventional coatings.

The pool wall and / or bottom structure according to the invention is more economical than conventional structures because the protective mat is simple to manufacture and inexpensive and can be used directly on a rough masonry surface.

The invention is not limited to the embodiment illustrated in the figures.

In particular, the protective mat may comprise more than two successive layers of polymer foam, the layers having increasing densities from the closest to the furthest from the masonry.

Claims (10)

1. Wall structure and / or bottom for swimming pool, of the type comprising, on the one hand, a masonry (14) delimiting a basin (16) intended to be filled with water, and on the other hand, a coating comprising a polymer covering sheet (18) covering the surface of the masonry facing the water and a protective mat (20) interposed between the masonry (14) and the covering sheet (18), characterized in that the protective mat (20) comprises at least two successive layers of polymer foam, one internal (20I) being in contact with the masonry (14) and the other external (20E) being in contact with the sheet of covering, the density of the outer layer (20E) being greater than the density of the inner layer (20I) by a ratio of between 2 and 4, preferably substantially equal to 3. 2. Structure according to claim 1, characterized in that the outer layer (20E) is thinner than the inner layer (20I), preferably in a thickness ratio substantially equal to 2/5. 3. Structure according to claim 1 or 2, characterized in that the density of the inner layer (20I) is between 15 and 50 kg / m3, and the density of the outer layer (20E) is between 30 and 120 kg / m3. 4. Structure according to any one of the preceding claims, characterized in that the thickness of the inner layer (20I) is between 2 and 7 mm, and the thickness of the outer layer (20E) is between 2 and 5 mm. 5. Structure according to any one of the preceding claims, characterized in that the internal (201) and external (20E) layers are of crosslinked polyethylene foam or of polyvinyl chloride (PVC) foam. 6. Protective mat for a wall and / or bottom structure for a swimming pool, of the type intended to be interposed between a masonry (14) and a polymer covering sheet (18), characterized in that it comprises at at least two successive layers of polymer foam, one internal (20I) and the other external (20E), the density of the external layer (20E) being greater than the density of the internal layer (20I) according to a ratio included between 2 and 4, preferably substantially equal to 3. 7. Carpet according to claim 6, characterized in that the outer layer (20E) is thinner than the inner layer (20I), preferably in a thickness ratio substantially equal to 2/5. 8. Carpet according to claim 6 or 7, characterized in that the density of the inner layer (20I) is between 15 and 50 kg / m3, and the density of the outer layer (20E) is between 30 and 120 kg / m3. 9. Carpet according to any one of claims 6 to 8, characterized in that the thickness of the inner layer (20I) is between 2 and 7 mm, and the thickness of the outer layer (20E) is between 2 and 5 mm. 10. Carpet according to any one of claims 6 to 9, characterized that the inner (20I) and outer (20E) layers are of crosslinked polyethylene foam or polyvinyl chloride (PVC) foam.