Cladding panel

Abstract

The invention relates to a cladding panel (1) with two flat sides (2,3) facing away from each other, wherein grooves (4,5) are formed on both flat sides (2,3), and wherein the grooves (4) on one flat side (2) have smaller groove depths than the grooves (5) on the other flat side (3).

Description

[0001] The invention relates to a cladding panel with two flat sides facing away from each other.

[0002] Such cladding panels are used, for example, to cover ceilings, walls and / or columns in order to give the surfaces of these structures a desired appearance or to influence the acoustic properties of the surfaces.

[0003] The object of the invention is to provide a cladding panel with improved performance characteristics.

[0004] To achieve this objective, a cladding panel having the features of the independent claim directed to such a cladding panel is proposed. To achieve this objective, a cladding panel with two opposing flat sides is proposed, wherein grooves are formed on both flat sides, and wherein the grooves on one flat side have smaller groove depths than the grooves on the other flat side. The grooves on the two flat sides of the cladding panel can impart a specific appearance and / or specific acoustic properties to the cladding panel, but also a certain flexibility, so that the cladding panel can also be used to clad curved surfaces.

[0005] Due to the different groove depths of the grooves on the two flat sides of the cladding panel, a groove width of the grooves that have the smaller groove depth on this flat side can be largely independent of the selected bending radius around which the cladding panel is bent and, in contrast to a groove width of the grooves on the other flat side, remain almost constant.

[0006] In particular, if the grooves on the flat side acting as the visible side of the cladding panel have smaller groove depths than the grooves on the flat side acting as the rear side of the cladding panel, curved surfaces can be clad with the cladding panel without the groove width of the grooves on the visible side changing significantly due to the bending of the cladding panel.

[0007] The visible side of the cladding panel can be the flat side facing away from a clad surface when the cladding panel is in the installed, use position. The reverse side can be the flat side of the cladding panel facing away from the visible side.

[0008] In relation to grooves on cladding panels that are arranged adjacent to the curved or bent cladding panel and are not curved or bent themselves, the groove widths of the grooves on the curved cladding panel do not differ significantly from the groove widths of the grooves on the adjacent, non-curved or less curved cladding panels.

[0009] Particularly preferably, the grooves on the flat side acting as the visible side of the cladding panel have groove depths that are less than half the panel thickness or at most as large as half the panel thickness of the cladding panel.

[0010] It is particularly advantageous if the grooves on the flat side of the cladding panel, which serves as the visible side, have groove depths that are less than half the panel thickness. In this case, bending the cladding panel to cover curved surfaces has a particularly minimal impact on the groove widths on the flat side of the cladding panel, which serves as the visible side.

[0011] In this way, the cladding panel according to the invention enables the cladding of curved, bent and even flat surfaces, with a uniform groove pattern on the entire clad surface.

[0012] As already indicated above, the cladding panel can be flexible, particularly due to the grooves on the flat sides, especially around a bending axis oriented parallel to the grooves. Preferably, the grooves on the respective flat side are aligned parallel to each other. It is particularly advantageous if the grooves on one flat side are aligned parallel to the grooves on the other flat side.

[0013] For handling and performance characteristics of the cladding panel, it is also advantageous if the grooves on the respective flat side connect two opposite edges of the respective flat side. The grooves then extend over the entire length of the flat side, measured in the direction of the grooves. This makes it particularly easy to bend the cladding panel into shape to cover a curved surface.

[0014] In one embodiment of the cladding panel, the grooves on one flat side are offset from the grooves on the other flat side in the cross-section of the cladding panel. In one embodiment of the cladding panel, the grooves on one flat side are arranged coaxially, i.e., without offset, with the grooves on the other flat side in the cross-section of the cladding panel.

[0015] The grooves on the two flat sides may overlap in the cross-section of the cladding panel. In this case, there is a cross-sectional plane that runs through the cladding panel and intersects the grooves, preferably all the grooves, on both flat sides.

[0016] In another embodiment of the cladding panel, the grooves on the two flat sides are arranged with their respective groove bases in a common cross-sectional plane of the cladding panel. This common cross-sectional plane is preferably spaced from a longitudinal center plane of the cladding panel parallel thereto in the direction of the groove depths. In this case, the sum of the groove depths of the grooves on one flat side and the groove depths of the grooves on the other flat side corresponds to the panel thickness of the cladding panel, with the groove depths of the grooves on one flat side differing from the groove depths of the grooves on the other flat side, as previously described.

[0017] In one embodiment of the cladding panel, the grooves on each flat side have a uniform groove depth. The sum of the uniform groove depths, i.e., the groove depth of the grooves on one flat side and the groove depth of the grooves on the other flat side, can be greater than, equal to, or less than a panel thickness of the cladding panel measurable in the direction of the groove depths.

[0018] If the total is equal to the panel thickness, the grooves meet at their bases in a common cross-sectional plane of the cladding panel. In this case, the grooves on one flat side should be offset from the grooves on the other flat side.

[0019] If the sum is smaller than the plate thickness, the grooves on one flat side are arranged with their respective groove bases in a cross-sectional plane that is spaced apart in the direction of the groove depths from a cross-sectional plane in which the grooves on the other flat side are arranged with their respective groove bases. The grooves on one flat side can be offset or coaxial with the grooves on the other flat side.

[0020] If the total is greater than the panel thickness, the grooves on the two flat sides overlap in the cross-section of the cladding panel, as previously mentioned. In this case, the grooves on one flat side should be offset from the grooves on the other flat side.

[0021] In one embodiment of the cladding panel, the grooves on one of the two flat sides can have a groove depth that is greater or less than or equal to half the thickness of the cladding panel, while the grooves on the other flat side can have a groove depth that is greater or less than half the thickness of the cladding panel. Depending on the selected groove depth of the two flat sides, a different groove pattern results in the cross-section.

[0022] Particularly when the cladding panel is to be bent around small radii, i.e. sharply, it can be advantageous to design the grooves, especially on the flat side, which forms the back of the cladding panel, with a groove depth that is at least equal to or greater than half the panel thickness of the cladding panel.

[0023] In one embodiment of the cladding panel, the grooves on one flat side alternate with the grooves on the other flat side, as seen in the cross-section of the cladding panel. Between two grooves on one flat side, a groove is then formed on the other flat side. The grooves on one flat side are offset from the grooves on the other flat side.

[0024] In another embodiment of the cladding panel, it can be provided that between two adjacent grooves on one flat side, more than one groove is formed on the other flat side, in particular two or three or more grooves. Specifically, it can be provided that between two grooves on the flat side of the cladding panel that serves as the visible side of the cladding panel, at least two or more grooves are formed on the flat side that serves as the rear side of the cladding panel.

[0025] In one embodiment of the cladding panel, the cladding panel is constructed in a single layer. However, the cladding panel can also be constructed in at least two layers and have at least one visible layer and a backing layer. Constructing the cladding panel as a multi-layer cladding panel can be advantageous in order to impart specific properties to the cladding panel. For example, a multi-layer structure makes it possible to assign specific acoustic properties to the cladding panel, in particular damping and / or insulating properties.

[0026] In one embodiment of the cladding panel, it has at least one transverse layer arranged between the previously mentioned visible layer and the previously mentioned backing layer. This transverse layer can impart certain acoustic properties to the cladding panel, for example, the previously mentioned acoustically dampening and / or acoustically insulating effect.

[0027] The backing can be optimized for attaching the cladding panel to a surface. For this purpose, transverse grooves, explained in more detail below, can be formed on the rear flat side of the cladding panel. These transverse grooves also enable bending of the cladding panel about a bending axis oriented transversely to the grooves, in particular to the grooves on the front or visible flat side. The transverse grooves thus enable bending of the cladding panel about at least one further bending axis on both flat sides, oriented transversely, preferably at right angles to the aforementioned grooves. This makes the cladding panel suitable for cladding surfaces that may be curved in two or more axes.

[0028] The visible layer on the visible side of the cladding panel can be designed with regard to the desired optical properties and, if necessary, also with regard to acoustic properties.

[0029] The visible layer of the cladding panel can, for example, have a strip-like appearance. The strip-like appearance can be achieved by the grooves on the flat side of the cladding panel, which forms the visible side of the cladding panel. The visible layer can be solid-layered and / or made of, for example, wood-based material, solid wood, veneer, medium-density fiberboard (MDF) and / or high-density fiberboard (HDF). The visible layer can also have, for example, a sanded, brushed, planed, rough-sawn, painted and / or oiled surface.

[0030] In a particularly preferred embodiment of the cladding panel, the visible layer can, for example, consist of a combination of solid wood or wood-based material and veneer.

[0031] In one embodiment of the cladding panel, the backing layer can be solid-layered and / or made of, for example, wood-based material, solid wood, veneer, MDF, HDF, and / or absorber material, such as softwood fiber, hemp, jute, mineral wool, poly fleece, and / or wool. The backing layer can also be designed with a sanded, brushed, planed, rough-sawn, painted, and / or oiled surface.

[0032] The transverse layer of the cladding panel can be made of, for example, wood-based material, solid wood, veneer, MDF, HDF, and / or absorber material, in particular softwood fiber, hemp, jute, mineral wool, poly fleece, and / or wool. The transverse layer can, for example, be a single-layered structure or comprise at least two or more layers of different materials, in particular different materials of the aforementioned types, and / or with different layer thicknesses.

[0033] The cross-layer can be heterogeneous or homogeneous. With a homogeneous structure, the cross-layer can consist of only a single material along its surface area. With a heterogeneous structure, it is possible, for example, to provide a sequence of different materials along the surface area of ​​the cross-layer. The different materials can be available in different widths. For example, a sequence in which the cross-layer is made of alternating wood and absorber material is conceivable.

[0034] This creates a cladding panel that, thanks to its cross-layer construction and its wood components, exhibits high stability and resilience, and, thanks to its absorber material content, offers good acoustic properties. The absorber material can have an acoustically dampening and / or insulating effect, thus influencing the acoustic properties of the cladding panel.

[0035] In one embodiment of the cladding panel, at least one flat side, preferably the flat side that forms the visible side of the cladding panel in the installed position of use, is flat in cross-section except for the grooves. This creates a visible side that is unprofiled except for the grooves. In another embodiment of the cladding panel, the cladding panel has a profiled flat side as the visible side. Viewed in the cross-section of the cladding panel, the visible side is then profiled, i.e. does not have a uniform height on the visible side. For example, a height-offset strip profile can be formed on a flat side of the cladding panel, in particular on the flat side of the cladding panel that serves as the visible side of the cladding panel in the installed position of use.

[0036] The installation of the cladding panel can be simplified if the flat side serving as the back is flat, i.e. unprofiled, except for the grooves and / or transverse grooves.

[0037] In one embodiment of the cladding panel, strips of the flat side arranged between two grooves, in particular the flat side which forms the visible side of the cladding panel, are provided with a chamfer and / or a rounding on the groove side.

[0038] The cladding panel can have a transverse joint on at least one narrow side oriented perpendicular to the flat sides. The transverse joint can be designed, for example, as a butt joint, a tongue-and-groove joint, or a groove for a separate tongue. The transverse joint can be used to connect the cladding panel to another cladding panel or another component.

[0039] The cladding panel can have a longitudinal joint on at least one longitudinal narrow side oriented transversely to the flat sides. The longitudinal joint can be designed, for example, as a butt joint, a tongue-and-groove joint, or a groove for a separate tongue. The longitudinal joint can also be used to connect the cladding panel to another cladding panel or another component. The longitudinal narrow side of the cladding panel can be the narrow side of the cladding panel that is oriented in the direction of the grooves on at least one of the two flat sides.

[0040] The cladding panel can have transverse grooves oriented transversely, preferably at right angles to the grooves, on at least one flat side, in particular on its rear side. As already explained above, these transverse grooves can promote bending of the cladding panel about at least one further bending axis oriented transversely, preferably at right angles, to the grooves on the flat sides.

[0041] At least one groove of the cladding panel can have a rectangular or polygonal cross-section, a cross-section that tapers toward the groove base, or a trapezoidal cross-section, and / or a curved or flat or inclined groove base, or a groove base that slopes downwards on both sides of a longitudinal center axis of the groove toward a groove depth. Furthermore, at least one groove can have a groove base provided with chamfers or rounded portions.

[0042] The grooves can be grouped on at least one flat side in one or in at least two groups. Two groups of grooves can have a distance from one another on a flat side that is greater than a groove spacing of the grooves within one of the groups. It is also possible for at least one group of grooves to have a distance from an edge of the cladding panel that is greater than a groove spacing within the group. Such a cladding panel can thus have regions on at least one of its flat sides that is designed without grooves. These regions can be regions between groups of grooves. The arrangement of grooves in groups can influence the appearance of the cladding panel. In addition, the arrangement of grooves in one or more groups enables the definition of one or more bending regions in which the cladding panel can be preferentially bent.

[0043] In this context, it is expedient if the groups of grooves are located opposite each other on the two flat sides of the cladding panel, i.e. are arranged in the same cross-sectional areas of the cladding panel.

[0044] In another embodiment of the cladding panel, the grooves are evenly distributed on at least one flat side. This facilitates the free selection of the area in which the cladding panel is bent to cover a curved surface.

[0045] The invention is described in more detail below using exemplary embodiments, but is not limited to these exemplary embodiments. Further exemplary embodiments result from combining the features of individual or multiple claims with one another and / or from combining individual or multiple features of the exemplary embodiments. They show: Fig. 1: a side view of a single-layer cladding panel, wherein grooves can be seen on a visible flat side of the cladding panel, which are evenly distributed over the visible side of the cladding panel and whose groove depth is smaller than the groove depth of grooves on the rear flat side of the cladding panel, Fig. 2: a side view of a single-layer cladding panel, wherein some of the grooves on the visible flat side are grouped in pairs, Fig. 3: one of the in Figure 2A three-layer cladding panel similar to the cladding panel shown, but here with a visible side which is profiled by strips of different heights arranged between the grooves, Fig. 4: a frontal detailed view of a strip of a cladding panel arranged between two grooves, wherein the strip is provided with bevels on both sides, i.e. on the groove side, Fig. 5: a frontal detailed view of a strip of a cladding panel arranged between two grooves, wherein the strip is provided with curves on both sides, i.e. on the groove side, Fig. 6: a side view of another cladding panel, wherein on both flat sides of the cladding panel two groups of grooves are arranged, which have a distance between each other which is greater than the groove distance within the groups, Fig. 7: a compared to the representations of the Figures 1 to 6A side view of a cladding panel rotated by 90 degrees to illustrate transverse grooves oriented at right angles to the grooves on the back of the cladding panel. Fig. 8: A side view of a three-layer cladding panel having grooves that overlap in cross-section on its rear flat side and on its visible flat side, with a groove being formed on the other flat side between two grooves on one flat side. Fig. 9: A side view of a three-layer cladding panel with grooves arranged coaxially in the cross-section of the cladding panel on both flat sides. Fig. 10: A side view of a three-layer cladding panel, with two grooves being formed on the rear flat side of the cladding panel between two grooves on the visible flat side of the cladding panel.11: a side view of a three-layer cladding panel, wherein the cladding panel has a homogeneous transverse layer between a visible layer and a rear layer, Fig. 12: a side view of a three-layer cladding panel, wherein the cladding panel has a heterogeneous transverse layer between a visible layer and a rear layer, Fig. 13: a side view of three interconnected cladding panels to illustrate the groove pattern on the visible sides of the cladding panels with different bending radii, Fig. 14: a detailed view of a cladding panel with a convexly curved visible side, Fig. 15: a detailed view of a cladding panel with a flat visible side, Fig. 16: a detailed view of a cladding panel with a concavely curved visible side, Fig. 17: a perspective view of a single-layer cladding panel with a profiled visible side with a view of the rear flat side of the cladding panel, Fig.18: a perspective view of a three-layer cladding panel with an unprofiled, visible flat side of the cladding panel, Fig. 19: a perspective view of the one shown in . Figure 17 shown single-layer cladding panel with a view of the profiled flat side, Fig. 20: a perspective view of the three-layer cladding panel made of Figure 18 with a view of the unprofiled, ie flat visible side in relation to the strips between the grooves, Fig. 21: a plan view of the rear flat side of the Figure 20 shown cladding panel, where the arrows in the illustration point to parts of the transverse layer visible through the grooves in the rear flat side, which are made of wood, for example solid wood, and Fig. 22: a plan view of the visible flat side of the in Figure 20shown cladding panel, whereby the arrows in the illustration point to parts of the transverse layer visible through the grooves in the visible flat side, which consist of absorber material and impart acoustic insulating and / or damping properties to the transverse layer and thus to the entire cladding panel.

[0046] All figures show at least parts of cladding panels, each designated as a whole by 1. Unless specifically referenced to specific embodiments, the following description refers to all of the cladding panels 1 shown in the figures.

[0047] Each distribution plate 1 has two opposing flat sides 2 and 3, with grooves 4 and 5 formed on both flat sides 2, 3. The grooves 4 on one flat side 2 have smaller groove depths than the grooves 5 on the other flat side 3.

[0048] In the exemplary embodiments shown in the figures, the grooves 4 on the flat side 2, which functions as the visible side of the cladding panel 1, have smaller groove depths than the grooves 5 on the flat side 3, which functions as the rear side, of the respective cladding panel 1. The groove depths of the grooves 4 on the flat side 2, which functions as the visible side, are at most as large as half the panel thickness of the cladding panel 1 and preferably even less than half the panel thickness of the cladding panel 1.

[0049] Due to the grooves 4 and 5 on the two flat sides 2 and 3, each cladding panel 1 is designed to be flexible and can be bent about a bending axis oriented parallel to the grooves 4, 5 in order to adapt the cladding panel 1 to a curved surface that is to be clad with the cladding panel 1, if necessary.

[0050] The grooves 4 and 5 are aligned parallel to each other on the respective flat sides 2 and 3. Furthermore, the grooves 4 on the flat side 2 are also aligned parallel to the grooves 5 on the flat side 3 of the respective cladding panel 1.

[0051] The figures illustrate that the grooves 4 and 5 on the respective flat sides 2 and 3 connect opposite edges 6 and 7 of the cladding panel 1. The grooves 4 and 5 thus extend over the entire dimension of the respective flat sides 2 and 3, oriented in the direction of the grooves 4 and 5.

[0052] At the Figure 9 In the cladding panel 1 shown, the grooves 4 on one flat side 2, viewed in the cross-section of the cladding panel 1, are aligned coaxially with the grooves 5 on the other flat side 3 of the cladding panel 1 and thus have no lateral offset to the grooves 5 on the flat side 3.

[0053] In all other cladding panels shown in the figures, the grooves 4 on one flat side 2 are arranged offset from the grooves 5 on the other flat side 3, viewed in the cross section of the respective cladding panel 1.

[0054] The coaxial grooves 4 and 5 on the two flat sides 2 and 3 of the cladding panel 1, which are Figure 9 shown, are separated from each other by the material of the cladding panel 1. The grooves 4 and 5 therefore do not overlap when viewed in the cross-section of the cladding panel 1. This means that for this cladding panel 1, a cross-sectional plane can be defined that runs between the grooves 4 of one flat side 2 and the grooves 5 of the other flat side 3 of the cladding panel, without intersecting any of the grooves 4 or 5.

[0055] In all other embodiments of cladding panels 1 shown in the figures, the grooves 4 and 5 of the two flat sides 2 and 3 overlap when viewed in the cross-section of the cladding panel 1. This means that in these embodiments of the cladding panel 1, a cross-sectional plane can be defined within the cladding panel 1 that intersects both the grooves 4 of one flat side 2 and the grooves 5 of the other flat side 3 of the respective cladding panel 1.

[0056] In an embodiment of the cladding panel not shown in the figures, the grooves 4 and 5 on the two flat sides 2 and 3, with their respective groove bases 8 and 9, can also be arranged in a common cross-sectional plane of the cladding panel 1. This common cross-sectional plane can be spaced from a longitudinal center plane of the cladding panel 1 parallel thereto in the direction of the groove depths. This arrangement of the common cross-sectional plane is caused by the different groove depths that the grooves 4 have on one flat side 2 and the grooves 5 have on the other flat side 3 of the cladding panel 1.

[0057] In the case of the cladding panels 1 shown in the figures, which are flat on their flat side 2, which functions as the visible side in the position of use, and therefore do not have a profile, as is the case with the cladding panels 1 according to the Figures 3 , 17or 19, the grooves 4 and 5 on the respective flat side 2, 3 each have a uniform groove depth.

[0058] Depending on the design of the cladding panel 1, a sum of the respective uniform groove depths can be greater than, equal to, or smaller than a panel thickness of the cladding panel 1 measurable in the direction of the groove depths.

[0059] In the case of a cladding panel 1, as used for example in Figure 1 or also in Figure 2 is shown and in which the grooves 4 on one flat side 2 overlap with the grooves 5 on the other flat side 3 in the cross-section of the cladding panel 1, a sum of the uniform groove depths is greater than a panel thickness of the cladding panel 1 measurable in the direction of the groove depths.

[0060] In all cladding panels 1 shown in the figures, the grooves 5 on the flat side 3, which acts as the rear side, have a groove depth that is greater than half the panel thickness of the cladding panel 1. The grooves 4 on the other flat side 2 have a groove depth that is less than half the panel thickness of the cladding panel 1. Thus, the grooves 4 can overlap with the grooves 5, but have a smaller groove depth than the grooves 5 on the flat side 3, which acts as the rear side, of the cladding panel 1.

[0061] The Figure 10 The cladding panel 1 shown has the special feature that two grooves 5 are arranged on the rear flat side 3 between two grooves 4 arranged on the visible flat side 2.

[0062] In all other embodiments of cladding panels 1 shown in the figures, at least one groove 5 or 4 is formed on the other flat side 3 or 2 between two adjacent grooves 4 or 5 on one flat side 2 or 3.

[0063] The Figures 1, 2 , 6, 7 The cladding panels 1 shown in Figures 13-16 are single-layered. The remaining cladding panels 1 shown in the figures are multi-layered, namely three-layered, and comprise a visible layer 21, a backing layer 22, and a transverse layer 10 between the visible layer 21 and the backing layer 22.

[0064] The visible layer 21 has a strip-like appearance due to the grooves 4 on the visible flat side 2. The visible layers 21 shown in the figures are also solid layers. The visible layer 21 can be made of wood-based material, solid wood, veneer, MDF and / or HDF and / or with a sanded, brushed, planed, rough-sawn, varnished, and / or oiled surface. Of course, it is also possible to produce the visible layer 21 from a mixture of the aforementioned materials.

[0065] The backing 22 of the cladding panel 1 shown in the figures is also constructed from solid layers. The backing 22 can be made of wood-based material, solid wood, veneer, MDF, HDF, and / or absorber material, for example, softwood fiber, hemp, jute, mineral wool, poly fleece, and / or wool. The backing 22 can also have a sanded, brushed, planed, rough-sawn, painted, and / or oiled surface.

[0066] The transverse layer 10 between the visible layer 21 and the backing layer 22 can consist of a wood-based material, solid wood, MDF, HDF and / or absorber material, in particular of soft wood fiber, hemp, jute, mineral wool, poly fleece and / or wool.

[0067] At the Figure 11 In the cladding panel 1 shown, the transverse layer is made of one material or a mixture of materials, but is homogeneous. Figure 12 In the cladding panel 1 shown, the cross layer 10 is heterogeneously constructed. This means that the cross layer 10 comprises sections and / or elements made of different types of material. This is indicated by the different hatching of the cross layer 10 in Figure 12 indicated.

[0068] In the case of a multi-layer structure of the transverse layer 10, i.e. a layer structure which comprises two or more layers in the direction of the plate thickness, the transverse layer 10 can have two or more layers made of different types of material, in particular of different types of material mentioned above, and / or with different layer thicknesses.

[0069] As mentioned previously, the Figures 3 , 17 and 19 The cladding panels 1 shown are profiled in addition to the grooves 4 on the flat side 2, which functions as the visible side. The remaining cladding panels 1 shown in the figures are flat on the flat side 2, which functions as the visible side, except for the grooves 4, when viewed from the side.

[0070] The detailed representations of the Figures 4 and 5 show two different strips of a flat side 2, which are provided on each of their longitudinal sides facing the grooves 4 with a chamfer 11 - see Figure 4 - or with a rounding 12 - see Figure 5 - are provided.

[0071] The Figures 3 , 17 and 19 The cladding panels 1 shown have a height-offset strip profile 13 on their flat side 2, which functions as the visible side. The strip profile 13 is formed by strips of different thicknesses and forms the visible layer 21 of the cladding panel 1.

[0072] All cladding panels 1 can have a transverse joint 15 on their narrow sides 14, which are oriented transversely to the flat sides 2 and 3. The transverse joint 15 serves to connect the cladding panel 1 to another cladding panel 1 or to another component. The transverse joint 15 can be designed, for example, as a butt joint, a tongue-and-groove joint, or a groove for a separate tongue.

[0073] The cladding panels 1 have a longitudinal joint 17 on at least one longitudinal narrow side 16 oriented transversely to the flat sides 2 and 3, which is also oriented transversely to the aforementioned narrow side 14. The longitudinal joint 17 serves to connect the cladding panel 1 to another cladding panel 1 or another component via its longitudinal narrow side 16. The longitudinal joint 17 can be designed, for example, as a butt joint, a tongue-and-groove joint, or a groove for an external tongue.

[0074] The narrow side 14 can be a narrow side of the respective cladding panel 1, which is oriented transversely or at right angles to an alignment of the grooves 4 and 5 of the cladding panel 1.

[0075] The longitudinal narrow side 16 can be a narrow side of the cladding panel 1 which is oriented parallel to the course of the grooves 4 and 5 on the flat sides 2 and 3 of the cladding panel 1.

[0076] The Figure 7The cladding panel 1 shown has transverse grooves 18 on its rear flat side 3, oriented transversely, namely at right angles to the grooves 4 and 5. These transverse grooves 18 promote bending of the cladding panel 1 about at least one further bending axis oriented transversely, here at right angles, to the grooves 4 and 5 on the flat sides 2 and 3.

[0077] The grooves 4 and 5 shown in the figures have a rectangular cross-section when the cladding panel 1 is undeformed. In other embodiments of the cladding panel 1, the grooves 4 and 5 can also have other cross-sectional shapes, for example, a rectangular or polygonal cross-section, a cross-section tapering toward the groove base 8, 9, or a trapezoidal cross-section.

[0078] The grooves 4 and 5 of the cladding panels 1 shown in the figures each have a flat groove base 8 and 9, respectively. In embodiments of the cladding panel 1 not shown in the figures, the respective groove base 8, 9 can be curved, inclined, or even sloped downwards on both sides of a longitudinal center axis of the respective groove 4, 5 in the direction of a groove depth. The respective groove base 8, 9 can also be connected to the groove flanks of the groove 4, 5 by chamfers and / or roundings.

[0079] Figure 6shows an embodiment of a cladding panel 1, in which the grooves 4 on one flat side 2 and the grooves 5 on the other flat side 3 are each grouped into two groups 19 and 20. The two groups 19 and 20 of grooves 4 and 5 are spaced apart from one another by a distance that is greater than the spacing of the grooves 4 and 5 within one of the groups 19 and 20. The groups 19 and 20 can define areas in which the cladding panel 1 can be bent to cover a curved surface. In this context, it is expedient if the groups 19 and 20 of grooves 4 and 5 are opposite one another on the two flat sides 2 and 3, i.e., as in Figure 6 shown, are arranged in the same cross-sectional areas of the cladding panel 1.

[0080] In another embodiment of the cladding panel 1, not shown in the figures, at least one group of grooves can be provided which has a distance from an edge of the cladding panel 1 that is greater than a groove spacing of the grooves within the respective group.

[0081] In the remaining cladding panels 1 shown in the figures, the grooves 4 and 5 are evenly distributed on the two flat sides 2 and 3. The grooves 4 and 5 of these cladding panels 1 thus form a single group of grooves 4 or 5 on the respective flat side 2 or 3. These cladding panels 1 can therefore be used particularly easily for cladding strongly curved surfaces, for example, surfaces that are at least partially cylindrical.

[0082] The effect of the different groove depths of the grooves 4 on the visible flat side 2 and the grooves 5 on the rear flat side 3 of the cladding panels 1 is shown in the illustrations in the Figures 13-16 visible.

[0083] Figure 13 shows three cladding panels 1, which are connected to each other via their longitudinal narrow sides 17. Figure 14 shows the one with the top rectangle in Figure 13 marked detail in enlarged view. In Figure 14 is the cladding panel 1 compared to the figure from Figure 13 shown more curved. Figure 14 is intended to illustrate the effect of the different groove depths of the grooves 4 and 5 on the two flat sides 2 and 3 of the cladding panel 1 with regard to constant or at least almost constant groove widths even with strong bending of the cladding panel 1.

[0084] Figure 14clarifies that the grooves 4 on the flat side 2 of the cladding panel 1, which serves as the visible side, despite the convex curvature of the cladding panel 1 with respect to the flat side 2, have their groove width compared to a non-curved cladding panel 1, as shown in Figure 15 shown, hardly change. This is due to the fact that the rear grooves 5 on the flat side 3 have a greater groove depth than the grooves 4 on the flat side 2, which functions as the visible side. Furthermore, this effect is favored by the fact that the grooves 4 on the flat side 2 have a groove depth that is less than half the panel thickness of the cladding panel 1.

[0085] Figure 15 shows a section of a cladding panel 1, which is not curved. A comparison of the Figures 14 and 15 shows that the groove width of the grooves 4 on the flat side 2 of the cladding panel 1, which acts as the visible side, is determined by the convex curvature according to Figure 14is almost unchanged compared to the uncurved cladding panel 1.

[0086] Figure 16 shows a section of a cladding panel 1 with a concavely curved cladding panel 1 in relation to the flat side 2 acting as the visible side. Here, too, it can be clearly seen that the groove width of the visible-side grooves 4 hardly changes, while the groove width of the rear grooves 5 on the flat side 3 of the cladding panel 1 changes due to the curvature of the cladding panel 1 in comparison to the Figure 15 The grooves 4 formed on the visible flat side 2 have a Figure 15 Due to their smaller groove depth, the groove width remains almost unchanged. List of reference symbols

[0087] 1Cladding panel 2Flat side, visible side 3Flat side, rear side 4Groove on 2 5Groove on 3 6Edge 7Edge 8Groove base of 4 9Groove base of 5 10Cross layer 11Bevel 12Rounding 13Label profile 14Narrow side 15Cross joint 16Longitudinal narrow side 17Longitudinal joint 18Cross groove 19Group of grooves 20Group of grooves 21Visible layer 22Rear layer

Claims

1. Cladding panel (1) with two flat sides (2, 3) facing away from each other, wherein grooves (4, 5) are formed on both flat sides (2, 3), and wherein the grooves (4) on one flat side (2) have smaller groove depths than the grooves (5) on the other flat side (3).

2. Cladding panel (1) according to claim 1, wherein the grooves (4) on the flat side (2) acting as the visible side of the cladding panel (1) have smaller groove depths than the grooves (5) on the flat side (3) of the cladding panel (1) acting as the rear side, in particular wherein the grooves (4) on the flat side (2) acting as the visible side of the cladding panel (1) have groove depths which are smaller than half the panel thickness or at most as large as half the panel thickness of the cladding panel (1).

3. Cladding panel (1) according to claim 1 or 2, wherein the cladding panel (1), in particular due to the grooves (4, 5) on the flat sides (2, 3), is flexible, in particular about a bending axis oriented parallel to the grooves (4, 5).

4. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4,5) on the respective flat side (2,3) are aligned parallel to one another, in particular wherein the grooves (4,5) on one flat side (2,3) are aligned parallel to the grooves (3,2) on the other flat side (3,2).

5. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on the respective flat side (2, 3) extend over the entire dimension of the flat side (2, 3) oriented in the direction of the grooves (4, 5) and / or connect two opposite edges (6, 7) of the cladding panel (1) to one another.

6. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on one flat side (2, 3) are arranged offset in the cross section of the cladding panel (1) to the grooves (5, 4) on the other flat side (3, 2), or wherein the grooves (4, 5) on one flat side (2, 3) are arranged coaxially, namely without offset, to the grooves (5, 4) on the other flat side (3, 2) in the cross section of the cladding panel (1).

7. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on the two flat sides (2, 3) overlap in the cross-section of the cladding panel (1), or wherein the grooves (4, 5) on the two flat sides (2, 3) are arranged with their respective groove base (8, 9) in a common cross-sectional plane of the cladding panel (1), preferably wherein the common cross-sectional plane is spaced from a longitudinal center plane of the cladding panel (1) parallel thereto in the direction of the groove depths.

8. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on the respective flat side (2, 3) have a uniform groove depth and a sum of the respective uniform groove depths is greater than, equal to or less than a panel thickness of the cladding panel (1) measurable in the direction of the groove depths.

9. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on one flat side (2, 3) of the two flat sides (2, 3) have a groove depth that is greater than or less than or equal to half the panel thickness of the cladding panel (1), while the grooves (4, 5) on the other flat side (2, 3) have a groove depth that is greater than or less than half the panel thickness of the cladding panel (1).

10. Cladding panel (1) according to one of the preceding claims, wherein between two adjacent grooves (4,5) on one flat side (2,3) at least one groove (5,4) is formed on the other flat side (3,2), in particular two or three or more grooves (5,4).

11. Cladding panel (1) according to one of the preceding claims, wherein the cladding panel (1) is constructed in one layer or wherein the cladding panel (1) is constructed in at least two layers and has at least one visible layer (21) and a rear layer (22).

12. Cladding panel (1) according to the preceding claim, wherein the cladding panel (1) has at least one transverse layer (10) arranged between the visible layer (21) and the rear layer (22).

13. Cladding panel (1) according to one of the two preceding claims, wherein the visible layer (21) is formed in a strip look and / or solid layer and / or from wood material, solid wood, veneer, medium-density fiberboard (MDF) and / or high-density fiberboard (HDF) and / or with a sanded, brushed, planed, rough-sawn, painted and / or oiled surface.

14. Cladding panel (1) according to one of the three preceding claims, wherein the backing (22) is formed of solid layers and / or from wood-based material, solid wood, veneer, medium-density fiberboard (MDF), high-density fiberboard (HDF) and / or absorber material, for example from soft wood fiber, hemp, jute, mineral wool, poly fleece and / or wool, and / or with a sanded, brushed, planed, rough-sawn, painted and / or oiled surface.

15. Cladding panel (1) according to one of claims 12 to 14, wherein the transverse layer (10) consists of wood-based material, solid wood, medium-density fiberboard (MDF), high-density fiberboard (HDF) and / or absorber material, in particular of soft wood fiber, hemp, jute, mineral wool, poly fleece and / or wool, and / or wherein the transverse layer (10) is designed in a single layer or has at least two or more layers made of different types of material, in particular of different types of material mentioned, and / or with different layer thicknesses.

16. Cladding panel (1) according to one of claims 12 to 15, wherein the transverse layer (10) is heterogeneous or homogeneous.

17. Cladding panel (1) according to one of the preceding claims, wherein at least one flat side (2, 3), in particular the flat side (2) of the cladding panel (1) acting as the visible side, is flat in cross-section except for the grooves (4) or is profiled in addition to the grooves (4).

18. Cladding panel (1) according to one of the preceding claims, wherein strips of the flat side (2, 3) arranged between two grooves (4, 5) are provided on the groove side with a chamfer (11) and / or rounding (12), and / or wherein a height-offset strip profile (13) is formed on a flat side (2, 3), in particular on the visible side of the cladding panel (1).

19. Cladding panel (1) according to one of the preceding claims, wherein the cladding panel (1) has a transverse joint (15) on at least one narrow side (14) oriented transversely to the flat sides (2, 3), preferably wherein the transverse joint (15) is designed as a butt joint, as a tongue and groove connection or as a groove for an external tongue, and / or wherein the cladding panel (1) has a longitudinal joint (17) on at least one longitudinal narrow side (16) oriented transversely to the flat sides (2, 3), preferably wherein the longitudinal joint (17) is designed as a butt joint, as a tongue and groove connection or as a groove for an external tongue.

20. Cladding panel (1) according to one of the preceding claims, wherein the cladding panel (1) has, on at least one flat side (2, 3), in particular on its rear side (3), transverse grooves (18) oriented transversely, preferably at right angles, to the grooves (4, 5).

21. Cladding panel (1) according to one of the preceding claims, wherein at least one groove (4, 5) has a rectangular or polygonal or tapering towards the groove base (8, 9) or trapezoidal cross-section and / or a curved or flat or inclined groove base (8, 9) or sloping on both sides of a longitudinal central axis in the direction of a groove depth, and / or wherein at least one groove (2, 3) has a groove base (8, 9) provided with chamfers and / or rounded portions.

22. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) on at least one flat side (2, 3) are grouped in one or in at least two groups (19, 20), in particular wherein two groups (19, 20) are spaced apart from one another by a distance greater than a groove spacing within one of the groups (19, 20) and / or wherein at least one group (19, 20) is spaced apart from an edge of the cladding panel (1) by a distance greater than a groove spacing within the group (19, 20).

23. Cladding panel (1) according to one of the preceding claims, wherein the grooves (4, 5) are arranged on at least one flat side (2, 3) distributed uniformly on the flat side (2, 3).

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