Swimming pool comprising a wall and a floor unit made of polypropylene
A laminated polypropylene pool with structuring fabric and polyamide coating enables tile and stone application, addressing design limitations and transportability, while offering thermal insulation and safety features.
Patent Information
- Application Number
- EP2025162569
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-11
- Filing Date
- 2025-03-10
- Publication Date
- 2025-10-01
AI Technical Summary
Polypropylene swimming pools are limited in design options due to the inability to apply tiles, natural stone, or customer-specific color choices, and are not easily transportable due to their weight.
A polypropylene swimming pool with a laminated surface that allows for the application of tiles, natural stone, and customizable colors through a structuring fabric and polyamide lamination, enabling assembly and disassembly for easy transport.
The solution provides a visually customizable and transportable polypropylene pool that meets customer preferences and extends usage by incorporating thermal insulation, enhancing safety and visual appeal.
Smart Images

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Abstract
Description
[0001] The invention comprises a swimming pool comprising a wall and a floor unit made of polypropylene.
[0002] The invention lies in the technical field of pools for bathing, swimming and for swimming and other water sports.
[0003] Hotels in warmer climates, in particular, often have outdoor pools of all shapes and sizes, as these are primarily used for relaxation, play, and splashing. However, for competitive swimming, rectangular pools are required so that they can be divided into multiple lanes using floating barriers. These pools are typically designed according to FINA (Fédération Internationale de Natation) standards. These define a 50-meter long lane and a 25-meter short lane, the latter of which is used for short-course competitions.
[0004] Private swimming pools, which are only a few meters in size, are also simply called pools. Such pools are available in any size and are suitable for year-round use. They can also be used as whirlpools. Swimming pools for private use or in hotels usually have a concrete wall, which is constructed on-site or sunk into the ground. The concrete wall is then tiled. The disadvantage is that concrete pools can only be constructed or poured on-site, as their heavy weight makes them difficult or impossible to transport.
[0005] One way to solve the problem of transport is to manufacture the water basins from polypropylene, which makes them much lighter and allows them to be manufactured externally and then transported to the installation site.
[0006] These polypropylene pools are easy to clean thanks to their smooth surface. However, the disadvantage is that additional materials such as tiles or natural stone cannot be applied to polypropylene. Painting in a color of customer choice, for example, is also not possible on polypropylene. This severely limits the visual design of the pools and prevents us from accommodating specific customer requests. However, the market wants polypropylene pools to be tiled or covered with mosaics, for example, as is the case with concrete pools.
[0007] DE 10 2020 004 453 A1 and US 2001 / 0 047 540 A1 are known from the state of the art.
[0008] The present invention has the object of creating a possibility with which a swimming pool made of polypropylene can be lined with tiles, like a concrete pool or can be designed optically.
[0009] The swimming pool according to the invention is defined by the features of independent claim 1. Advantageous aspects form the subject matter of the respective subclaims.
[0010] The invention comprises a swimming pool comprising a wall and a base unit made of polypropylene, wherein the wall and / or the base unit comprises, at least in some areas, a surface coated with a lamination. This makes it possible to provide a polypropylene swimming pool that can be covered with tiles or stone or coated with a varnish, thus allowing specific customer requirements to be met.
[0011] An advantageous technical aspect is that the lamination includes a structuring. This allows for maximum contact surface between the lamination and a suitable adhesive.
[0012] It is particularly advantageous if the structuring includes a fabric. Such fabrics are preferably made of natural fibers, synthetic fibers, and fiber blends (of these), are applied over the entire surface, and exhibit very good adhesion properties.
[0013] It has proven advantageous if the lamination includes a polyamide. This provides a lamination that exhibits good resistance to all water chemicals.
[0014] In a preferred embodiment, the cladding is a tile adhesive and / or resin adhesive and / or two-component adhesive. This allows the pool to be covered with different materials according to customer requirements.
[0015] Advantageously, the lamination can be coated with a varnish. This allows the pool to be colored according to the customer's wishes. Colored accents on elements such as steps or benches not only make them more visible underwater, thus increasing safety, but also provide a beautiful eye-catcher for a little more visual interest in and around the pool. A seamless surface made of PUR (polyurethane) is particularly preferred.
[0016] The lamination is advantageously welded. The lamination can be thermally bonded to the twin-wall panels to create a tight seal. This can be done either by joining the laminated panels or by applying the lamination to the thermally bonded panels.
[0017] One advantageous aspect is that the cladding is covered with tiles and / or natural stone. This allows the pool to be covered with tiles or natural stone according to the customer's wishes.
[0018] It is advantageous if the wall comprises at least two panels that, when connected, form a basin with a rim. Because the water basin is made of interconnected polypropylene panels, it can be assembled and disassembled with little effort and, due to polypropylene's low density, which is typically between 0.895 g / cm³ and 0.92 g / cm³, is easily transported.
[0019] An advantageous technical aspect provides for the wall panels and / or the floor unit to be made of evacuated twin-wall panels. Due to the vacuum created between the twin-wall panels, evacuated twin-wall panels exhibit very good thermal insulation properties. This significantly reduces the insulation required for the side walls and floor, extending the pool's use by 2-4 months per year (spring and fall). The twin-wall panels preferably have closed surfaces on the outside, which are connected to each other by a multitude of webs. The outer surfaces can be made of the same or different materials. Polyethylene, polypropylene, or synthetic resin (or mixtures of cement, quartz sand, water, stone powder, reinforced with polyester resin) are particularly suitable.Post-industrial recycled (PIR) materials with a 30%-60% recycled content are particularly preferred. Ideally, thermal conductivity should be in the range of 0.35-0.45 W / (m*K), while moisture absorption should be below 0.02 according to DIN EMN ISO 62.
[0020] It has proven advantageous for the wall panels and / or the floor unit to include thermal insulation. The thermal insulation can be applied as an additional layer or as a coating to the panels and the movable floor, or at least to the movable floor.
[0021] Advantageously, the floor unit is mounted on a floating base. The floor unit is independent of the welded-plate basin and features variable buoyancy to accommodate both lightweight plastic and heavy stone coverings.
[0022] According to an advantageous aspect, the swimming pool is a portable, freestanding pool. Freestanding, within the meaning of the invention, is any pool that is not necessarily directly attached to other elements and is not enclosed by masonry, the ground, or other fixtures. Conventional swimming pools or whirlpools are usually set into the ground or the ground and surrounded by the ground or the ground itself, and are therefore not freestanding.
[0023] The invention is explained in more detail below with reference to a drawing. They show:
[0024] Fig. 1 shows a schematic representation of a swimming pool according to the invention with partial cladding; and Fig. 2 shows a swimming pool according to the invention with a floor unit covered with tiles.
[0025] Fig. 1 shows a schematic representation of a swimming pool 1 according to the invention comprising a wall 11 and a base unit 12 made of polypropylene, wherein the wall 11 and / or the base unit 12 comprises, at least in some regions, a surface coated with a lamination 13. The lamination 13 comprises a structure. The structure comprises a fabric. The lamination 13 comprises a polyamide. For example, the polyamide is polypropylene or nylon.
[0026] It is conceivable that the lamination 13 is a tile adhesive and / or resin adhesive and / or two-component adhesive. Thus, it is possible for the lamination 13 to be covered with tiles and / or natural stone. In another embodiment, the lamination 13 is coated with a varnish.
[0027] The wall 11 comprises at least two panels that, when joined together, form a tub with a rim. The panels of the wall 11 and / or the floor unit 12 comprise evacuated hollow chamber panels. For example, double-web construction panels with the special lamination 13 are used. The polypropylene panels have a thickness in the range of 5-10 mm, preferably 6-9 mm, and particularly preferably 8 mm. It is also conceivable to build a swimming pool 1 from 57 mm thick construction panels. Such adhesive-coated plastic panels can also be used to create an exterior cladding for whirlpools, swimming pools, etc. with tiles or stone.
[0028] The panels of the wall 11 and / or the floor unit 12 comprise thermal insulation.
[0029] Swimming pool 1 is a portable, freestanding pool.
[0030] In Fig. 2A swimming pool 1 is shown, which includes a tiled floor unit 12. The floor unit 12 is mounted on a floating base. This allows the floor unit 12 to be raised and lowered, allowing the swimming pool 1 to be set up at different heights. The floor unit 12 itself is tiled, and the wall behind it is made of adhesive-covered plastic panels. This allows the entire pool 1 to be designed in a uniform appearance with tiles or stone, or in a uniform paint color.
Claims
1. Swimming pool (1) comprising a wall (11) and a base unit (12) made of polypropylene, wherein the wall (11) and / or the base unit (12) comprises at least partially a surface which is coated with a lamination (13).
2. Swimming pool (1) according to claim 1, wherein the lamination (13) comprises a structuring.
3. Swimming pool (1) according to one of the preceding claims, wherein the structuring comprises a fabric.
4. Swimming pool (1) according to one of the preceding claims, wherein the fabric comprises natural fibers, chemical fibers and fiber mixtures.
5. Swimming pool (1) according to one of the preceding claims, wherein the lamination (13) comprises a polyamide.
6. Swimming pool (1) according to one of the preceding claims, wherein the lamination (13) is a tile adhesive and / or resin adhesive and / or two-component adhesive.
7. Swimming pool (1) according to one of claims 1 to 5, wherein the lamination (13) is coated with a varnish.
8. Swimming pool (1) according to one of claims 1 to 5, wherein the lamination (13) comprises a welded connection.
9. Swimming pool (1) according to one of the preceding claims, wherein the cladding (13) is covered with tiles and / or natural stone.
10. Swimming pool (1) according to one of the preceding claims, wherein the wall (11) comprises at least two plates which, when connected to one another, form a tub with an edge.
11. Swimming pool (1) according to one of the preceding claims, wherein the at least two panels of the wall (11) are welded together.
12. Swimming pool (1) according to one of the preceding claims, wherein the panels of the wall (11) and / or the floor unit (12) comprise evacuated hollow chamber panels.
13. Swimming pool (1) according to one of the preceding claims, wherein the evacuated hollow chamber panels are connected to one another by means of plastic joining processes.
14. Swimming pool (1) according to one of the preceding claims, wherein the panels of the wall (11) and / or the floor unit (12) comprise thermal insulation.
15. Swimming pool (1) according to one of the preceding claims, wherein the thermal insulation is welded to the wall (11) and / or the floor unit (12).
16. Swimming pool (1) according to one of the preceding claims, wherein the wall (11) and / or the floor unit (12) has a length in the range of 2 - 4 m, preferably 2.5 - 3.5 m, particularly preferably 3 m and a width in the range of 1 - 2.5 m, preferably 1.5 - 2 m, particularly preferably 1.8 m.
17. Swimming pool (1) according to one of the preceding claims, wherein the floor unit (12) is mounted in a floating manner.
18. Swimming pool (1) according to one of the preceding claims, wherein the floor unit (12) has a relative density in a range of 0.1 - 0.3, preferably 0.15 - 0.25, particularly preferably 0.
2.
19. Swimming pool (1) according to one of the preceding claims, wherein the floor unit (12) has a surface density in a range of 800 - 1000 g / m 2 , preferably from 850 - 950 g / m 2 , particularly preferably 900 g / m 2 has.
20. Swimming pool (1) according to one of the preceding claims, wherein the swimming pool (1) is a portable, free-standing water pool.
Citation Information
Patent Citations
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