CN116802369A

CN116802369A - Decorative panel including a grout part dummy part

Info

Publication number: CN116802369A
Application number: CN202180089475.0A
Authority: CN
Inventors: 简·德·里克; 本尼·沙赫特; 布赖恩·罗利耶; 利埃文·万赫卢伟
Original assignee: Flooring Industries Ltd SARL
Current assignee: Unilin BV
Priority date: 2020-11-06
Filing date: 2021-11-04
Publication date: 2023-09-22

Abstract

A panel includes a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panel is provided with a first pair of opposed edges; and optionally a second pair of opposing edges. At least one of the first pair of opposing edges is provided with a grout dummy.

Description

Decorative panel including a grout part dummy part

Technical Field

The present invention relates to the field of decorative panels that can be installed to form floor, wall or ceiling coverings.

Background

Tiles or natural stone tiles may be installed in the floor covering. Grouting at joints between bricks is a known technique.

The known panels are made of a core comprising a plastic material or wood fibre board; and it includes a decorative top surface. Such panels are known to have a decorative top surface that mimics tile or natural stone tile. Grouting between joints remains a challenge for realistic copies of the covering of tiles or natural stone tiles.

US 2012/024402 A1 describes vinyl tiles. The vinyl tile includes female and male couplings to enable floating installation. Grouting channels are provided between vinyl tiles on the top surface of the male or female coupling members. Mortar is applied to the grout channel to complete the installation of the vinyl tile.

WO2011087704A1 describes surface covering tiles made using synthetic material, employing a connecting strip enabling the tiles to be connected to each other. The connection may be made with or without an adhesive. When the tiles are joined, a space is left between adjacent decorative surfaces to allow the application of mortar or simulated mortar therein.

Several methods of mimicking a particular joint between panels have been described in the patent literature.

EP2281975A2 discloses a method for forming decorative grooves on flooring boards. The flooring material has a core and a surface layer disposed on an upper side of the core. The method comprises the following steps: while the flooring material is being secured between the chains and the belt, the flooring material is displaced by means of a milling machine, the decorative groove is formed by removing at least partly the upper layer between joint edges of the flooring material, then parallel to the joint edges, so that the underlying layer is exposed and a surface portion of the groove is formed substantially parallel to the upper side of the flooring material, which is removed by means of a rotating tool located between the chains, which tool has a rotation axis that is horizontal with respect to the flooring material.

US2004146695A1 relates to a method for manufacturing resilient floors and walls. The resilient tiles are individually cut, routed and mechanically embossed on two adjacent edges to give each individual tile the appearance of a grout line on two adjacent edges. When a series of these tiles are mounted on a floor or wall, the seams between individual tiles are less pronounced than when using prior art resilient tiles having grout lines on all edges of the tiles. This is because the seams between the tiles of the present invention are not in the grout line itself, but are adjacent to the grout line.

US2013/0104486A1 discloses a floor covering comprising a panel with a core of plastic material and at least one covering layer covering the upper side of the core. The panels are provided with complementary and interengaged locking profiles at their connected lateral edges. In order to form a recess between two connected panels, at least one of the panels is provided with a milled-out portion at the upper side of its side edges, wherein the cover layer is completely hollowed out over the width of the milled-out portion, such that the bottom of the milled-out portion is formed by the material of the core.

W02020034436A1 discloses a chamfered plastic flooring assembled by connecting a plurality of panels. At least one side edge on the upper surface of the panel is provided with a surface inclined portion arranged along the length direction of the panel edge. Adjacent panels are joined at a surface slope to form a border area that has an attractive appearance, a strong three-dimensional effect, and is easy to clean. The surface of the boundary region is covered with a contamination-preventive layer. The border area of the chamfered plastic flooring has an attractive appearance, a strong three-dimensional effect, and is easy to clean.

W02018037270A1 relates to dense foam core tiles with simulated grout lines. The tile has a plurality of sides and includes at least a top layer, a core layer, and an exposed portion extending outwardly along one side of the tile having a textured surface that mimics a grout line. The top layer of the tile may include a top surface defined by an abrasion resistant layer, a polyvinyl chloride (PVC) layer having an optimal density and dye or colorant, and a decorative layer. The core layer is made of a dense foam material. The exposed portion and the textured surface may be formed on the PVC layer at a depth of between about 0.9 and 2 millimeters or more below the top surface of the tile to extend into the core layer and will have a width of between about 2 millimeters and 5 millimeters. The total thickness of the tile is preferably in the range of 4 mm to 8 mm.

WO2018162992A1 relates to a tile which can be used as a covering on a floor, wall or ceiling surface. The brick comprises at least one top section and the core layer may be made of a dense foam material. The top section may include a polyvinyl chloride layer and may also include a wear layer and/or a decorative layer. The tile includes a plurality of sides with an exposed portion formed along at least one side and optionally also through a middle section of the tile. The exposed portion may be formed on the polyvinyl chloride layer at a depth below the top surface of the tile to closely resemble an actual grout line. The tile may also include an interconnection mechanism that at least partially enables efficient tile installation.

EP1555141A1 relates to a panel comprising a decorative layer having a decorative pattern, a support layer for supporting the decorative layer and a carrier for supporting the support layer and the decorative layer. The support layer is at least partially disposed between the decorative layer and the carrier. The decorative layer is at least partially absent, preferably removed, so that the support layer is visible.

CN106193518A describes a wood-plastic floor. The wood-plastic floor comprises a WPC layer, an intermediate material layer, a color film layer and a wear-resistant layer. The WPC layer, the intermediate material layer, the color film layer and the wear-resistant layer are sequentially arranged from bottom to top. A pair of first opposing edges and a pair of second opposing edges are disposed on an upper surface of the wood-plastic flooring. At least one of the first edge and/or the second edge is provided with one or more dividing regions. The divided region extends along the first edge and/or the second edge, and the protective film is disposed on a surface of the divided region. Via the dividing region, a dividing line for distinguishing different floors can be realized.

WO2015078444A1 does not relate to a tile or stone-like covering, but to a floor panel with a carrier plate having a wood finish on the top side. The carrier plate and the facing are connected to each other by a resin. Edge strips are present on at least two side edges of the veneer. The edge strip is made of resin, and the wood veneer is adhered to the carrier plate by the resin.

It is also known to provide trim panels with chamfer and chamfer, examples being provided for example in WO2016/050848 and WO 2012/004701.

Disclosure of Invention

It is an object of the present invention to provide a panel in which realistic grout part simulations are included. This means that the grout dummy is already available on the panel itself so that no grouting operation needs to be performed after mounting the panel on the surface to be covered by the panel. This object is achieved in an alternative manner by several aspects of the invention.

A first aspect of the invention relates to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panels are provided with cooperating coupling parts at a first pair of opposite edges, substantially in the form of male coupling parts and female coupling parts, for coupling two such panels to each other at a first pair of opposite edges of two such panels in a floor, wall or ceiling covering. The male coupling portion is disposed at the male edges of the first pair of opposing edges. The female coupling is disposed at the female edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The surface of at least one of the male edge or the female edge is provided with a recess. Preferably, the recess extends to a position deeper in the panel than the decorative layer. The recess is provided with a varnish layer optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. In the coupled state of the panel with another such panel, the varnish layer of the recess is at least partially visible at the respective first pair of opposite edges of the panel with another such panel. Preferably, the thickness of the varnish layer is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

The recess and its varnish layer provide a replica of the grout.

Preferably, at least a portion of the side edges of the recess are provided with a varnish layer; more preferably, the varnish layer extends from the bottom of the recess to a position closer to the panel surface than the decorative layer at the side of the recess.

Preferably, the edge of the panel opposite the edge comprising the recess is at least above the segment provided with the varnish layer; more preferably, the varnish layer at this edge extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at this edge is provided on a bevel at the edge. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and at the edge opposite to the edge comprising the recess. Such an embodiment provides an even more realistic grout dummy coupling the panels, wherein the realistic grout dummy is already present in the panels such that no grout operation is required after panel installation.

When the varnish comprises sand and/or particles preferably having a particle size of more than 20 μm, the imitation is realized by a grout part, for example bonded by cement and comprising sand or such particles.

In a preferred embodiment of the first aspect of the invention, the surface of the varnish layer comprises segments parallel to the surface of the panel. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the first aspect of the invention, the recess extends into the substrate.

In a preferred embodiment of the first aspect of the invention, the recess provided with the varnish layer is configured to provide a grout analog in a covering comprising a plurality of such panels.

In a preferred embodiment of the first aspect of the invention, the visible width of the varnish layer of the recess is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm in the mounted state of two such panels at the first pair of opposite edges thereof; preferably less than 5mm. Such recess dimensions provide a grout portion replica similar to that used when installing and grouting tiles.

In a preferred embodiment of the first aspect of the invention, the panel comprises a second pair of opposite edges, wherein the second pair of opposite edges comprises a third edge and a fourth edge. When a plurality of such panels are installed in a covering, the third edge is arranged for facing the fourth edge of a third such panel, and preferably for contacting the fourth edge of the third such panel. The surface of at least one of the third edge or the fourth edge is provided with a second recess. Preferably, the second recess extends to a position deeper in the panel than the decorative layer. The second recess is provided with a varnish layer optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. In the mounted state of the panels, the varnish layer of the second recess is at least partially visible, wherein another such panel is at its respective second pair of opposite edges. Preferably, the thickness of the varnish layer of the second recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

The recess with the varnish layer provides a copy of the grout.

Preferably, at least a portion of the side edge of the second recess is provided with a varnish layer; more preferably, the varnish layer extends from the bottom of the recess to a position closer to the panel surface than the decorative layer at the side of the recess.

Preferably, the edge of the panel opposite the edge comprising the second recess is located at least above the segment provided with the varnish layer; more preferably, the varnish layer at this edge extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at this edge is provided on a bevel at the edge. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and at the edge opposite to the edge comprising the recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment according to the first aspect of the invention, the panel comprises at least one central recess at its surface, the central recess being arranged parallel to the recess and parallel to the first pair of opposite edges. Preferably, the central recess is disposed midway between the first pair of opposed edges. Preferably, the central recess extends to a position deeper in the panel than the decorative layer. The central recess is provided with a varnish layer, optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. Preferably, the thickness of the varnish layer of the central recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm. Preferably, at least a portion of the side edges of the at least one central recess is provided with a varnish layer. More preferably, the varnish layer extends from the bottom of the at least one central recess to a position closer to the panel surface than the decorative layer at the side edges of the at least one central recess. According to such an embodiment, the decorative layer is hidden from view at the side edges of the at least one central recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

Preferably, the varnish layer of the central recess comprises a section parallel to the surface of the panel.

In a preferred embodiment according to the first aspect of the invention, the visible width of the recess is the same as the visible width of the central recess in the coupled state at the first pair of opposite edges of two such panels. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

In a preferred embodiment according to the first aspect of the invention, the concave edge comprises a first closing plane and the convex edge comprises a second closing plane. In a state in which two such panels are coupled at a first pair of opposite edges thereof, a first closure plane of a first such panel contacts a second closure plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to a surface of the coupled panel.

In a preferred embodiment according to the first aspect of the invention, the varnish layer comprises sand and particles preferably having a particle size of more than 20 μm; and at least a portion of the sand and/or particles are present at the surface of the varnish layer; thereby preferably forming a roughened surface of the recess. Such an embodiment provides a realistic replica of a typical grout comprising sand or other particles, such as a cement bonded typical grout.

In a preferred embodiment of the first aspect of the invention, the varnish is an acrylic varnish or a polyurethane acrylic varnish, preferably a UV-curable varnish. This embodiment provides a durable grout analog

In a preferred embodiment of the first aspect of the invention, the panel comprises a second pair of opposite edges. The panels are provided with a second coupling portion at a second pair of opposite edges, which substantially cooperate with each other in the form of a second male coupling portion and a second female coupling portion for coupling two such panels to each other at the second pair of opposite edges of the two such panels in a floor, wall or ceiling covering. The second male coupling portion is disposed at a second male edge of the second pair of opposing edges; the second female coupling is disposed at a second female edge of the panel. The second coupling portion is provided with second mechanical locking means preventing the separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The surface of at least one of the second convex edge or the second concave edge is provided with a second recess. Preferably, the second recess extends to a position deeper in the panel than the decorative layer. The second recess is provided with a varnish layer optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. In the mounted state of the panels, the varnish layer of the second recess is at least partially visible, wherein another such panel is at its respective second pair of opposite edges. Preferably, the thickness of the varnish layer of the second recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

The recess and its varnish layer provide a replica of the grout.

Preferably, at least a portion of the side edge of the second recess is provided with a varnish layer; more preferably, the varnish layer extends from the bottom of the second recess to a position closer to the panel surface than the decorative layer at the side of the second recess.

Preferably, the edge of the panel opposite the edge comprising the second recess is at least above the segment provided with the varnish layer; more preferably, the varnish layer at this edge extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at this edge is provided on a bevel at the edge. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and at the panel edge opposite to the edge comprising the second recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment of the first aspect of the invention, the surface of the varnish layer of the second recess comprises a segment parallel to the surface of the panel. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the first aspect of the invention, the surface of the varnish layer of the recess and the surface of the varnish layer of the second recess are arranged at the same depth from the panel surface. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the first aspect of the invention, the visible width of the recess in the mounted condition at a first pair of opposite edges of two such panels is the same as the visible width of the second recess in the coupled condition at a second pair of opposite edges of two such panels. This embodiment provides an even more realistic imitation of the grout portion of the installed panel.

In a preferred embodiment of the first aspect of the invention, the panel comprises at least one second central recess at a surface thereof, wherein the second central recess is arranged parallel to the second recess and parallel to the second pair of opposite edges. Preferably, the second central recess is disposed midway between the second pair of opposed edges. Preferably, the second central recess extends to a position deeper in the panel than the decorative layer. The second central recess is provided with a varnish layer, optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. Preferably, at least a portion of the side edges of the at least one second central recess is provided with a varnish layer. More preferably, the varnish layer extends from the bottom of the at least one second central recess to a position closer to the panel surface than the decorative layer at the side edges of the at least one second central recess. According to such an embodiment, the decorative layer is hidden from view at the side edges of the at least one second central recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment according to the first aspect of the invention, the varnish layer of the second central recess comprises segments parallel to the surface of the panel.

Preferably, in the coupled condition at the second pair of opposite edges of two such panels, the visible width of the second recess is the same as the visible width of the second central recess.

In a preferred embodiment according to the first aspect of the invention, the panel edge provided with the recess is joined with the panel edge provided with the second recess in the joint. The varnish layer of the recess continues at the joint without interruption into the varnish layer of the second recess. Preferably, the varnish layer of the recess and the second recess have the same composition. This embodiment provides a more realistic simulation of the grout portion.

A second aspect of the invention relates to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panel includes a first pair of opposed edges; wherein the first pair of opposing edges includes a first edge and a second edge. When a plurality of such panels are mounted in a covering, a first edge is provided for facing and preferably for contacting a second edge of a second such panel. Preferably, the panel is arranged for adhering to a surface to form a covering for the surface. The surface of at least one of the first edge or the second edge is provided with a recess. Preferably, the recess extends to a position deeper in the panel than the decorative layer. The recess is provided with a varnish layer optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. The varnish layer of the recess is at least partially visible in the mounted state of the panel, wherein another such panel is at its respective first pair of opposite edges. Preferably, the thickness of the varnish layer is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

The recess and its varnish layer provide a copy of the grout.

Preferably, the edge of the panel opposite the edge comprising the recess is at least above the segment provided with the varnish layer; more preferably, the varnish layer at this edge extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at this edge is provided on a bevel at the edge. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and at the edge opposite to the edge comprising the recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment of the second aspect of the invention, the surface of the varnish layer comprises segments parallel to the surface of the panel. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the second aspect of the invention, the recess extends into the substrate.

In a preferred embodiment of the second aspect of the invention, the recess provided with the varnish layer is configured for providing a grout analog in a covering comprising a plurality of such panels.

In a preferred embodiment of the second aspect of the invention, the visible width of the varnish layer of the recess is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm, in the state in which two such panels are mounted at their first pair of opposite edges; and preferably less than 5mm. Such recess dimensions provide a grout portion replica similar to that used when installing and grouting tiles.

In a preferred embodiment of the second aspect of the invention, the panel comprises a second pair of opposite edges, wherein the second pair of opposite edges comprises a third edge and a fourth edge. When a plurality of such panels are mounted in a covering, a third edge is provided for facing and preferably for contacting a fourth edge of a third such panel. The surface of at least one of the third edge or the fourth edge is provided with a second recess. Preferably, the second recess extends to a position deeper in the panel than the decorative layer. The second recess is provided with a varnish layer optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. The varnish layer of the second recess is at least partially visible in the mounted state of the panels, wherein another such panel is at its respective second pair of opposite edges. Preferably, the thickness of the varnish layer of the second recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

The recess and its varnish layer provide a copy of the grout.

Preferably, the edge of the panel opposite the edge comprising the second recess is at least above the segment provided with the varnish layer; more preferably, the varnish layer at this edge extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at this edge is provided on a bevel at the edge. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and at the panel edge opposite to the edge comprising the recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment of the second aspect of the invention, the surface of the varnish layer of the second recess comprises a segment parallel to the surface of the panel. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the second aspect of the invention, the surface of the varnish layer of the recess and the surface of the varnish layer of the second recess are arranged at the same depth from the panel surface.

In a preferred embodiment of the second aspect of the invention, the visible width of the recess in a condition of being mounted at a first pair of opposite edges of two such panels is the same as the visible width of the second recess in a condition of being mounted at a second pair of opposite edges of two such panels. This embodiment provides an even more realistic imitation of the grout portion of the installed panel.

In a preferred embodiment of the second aspect of the invention, the panel comprises at least one second central recess at its surface, wherein the second central recess is arranged parallel to the second recess and parallel to the second pair of opposite edges. Preferably, the second central recess is disposed midway between the second pair of opposed edges. Preferably, wherein the second central recess extends to a position deeper in the panel than the decorative layer. The second central recess is provided with a varnish layer, optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. Preferably, at least a portion of the side edges of the at least one second central recess is provided with the varnish layer. More preferably, the varnish layer extends from the bottom of the at least one second central recess to a position closer to the panel surface than the decorative layer at the side edges of the at least one second central recess. According to such an embodiment, the decorative layer is hidden from view at the side edges of the at least one second central recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

In a preferred embodiment according to the second aspect of the invention, the varnish layer of the second central recess comprises segments parallel to the surface of the panel.

Preferably, in a state of being mounted at a second pair of opposite edges of two such panels, the visible width of the second recess is the same as the visible width of the second central recess.

In a preferred embodiment according to the second aspect of the invention, the panel comprises at least one central recess at its surface, the at least one central recess being arranged parallel to the recess and parallel to the first pair of opposite edges. Preferably, the central recess is disposed midway between the first pair of opposed edges. Preferably, the central recess extends to a position deeper in the panel than the decorative layer. The central recess is provided with a varnish layer, optionally comprising sand and/or particles preferably having a particle size of more than 20 μm. Preferably, the thickness of the varnish layer of the central recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm. Preferably, at least a portion of the side edges of the at least one central recess is provided with a varnish layer. More preferably, the varnish layer extends from the bottom of the at least one central recess to a position closer to the panel surface than the decorative layer at the side edges of the at least one central recess. According to such an embodiment, the decorative layer is hidden from view at the side edges of the at least one central recess. Such an embodiment provides an even more realistic grout dummy of the installed panel, wherein the realistic grout dummy is already present in the panel such that no grout operation is required after panel installation.

Preferably, the varnish layer of the central recess comprises segments parallel to the surface of the panel.

In a preferred embodiment according to the second aspect of the invention, the visible width of the recess is the same as the visible width of the central recess in a state of installation at a first pair of opposite edges of two such panels. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

In a preferred embodiment according to the second aspect of the invention, the panel edge provided with the recess is joined with the panel edge provided with the second recess in the joint. The varnish layer of the recess continues at the joint without interruption into the varnish layer of the second recess. Preferably, the varnish layer of the recess and the second recess have the same composition. This embodiment provides a more realistic simulation of the grout portion.

In a preferred embodiment according to the second aspect of the invention, the first edge comprises a first closing plane and the second edge comprises a second closing plane. In a state in which two such panels are mounted at a first pair of opposite edges thereof, a first closure plane of a first such panel contacts a second closure plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the mounted panel.

In a preferred embodiment according to the second aspect of the invention, the first edge and the second edge are free of such a coupling portion which will provide a mechanical locking of two such panels when mounted in the covering.

In a preferred embodiment according to the second aspect of the invention, the varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm; and at least a portion of the sand and/or particles are present at the surface of the varnish layer; thereby preferably forming a roughened surface of the recess. Such an embodiment provides a realistic replica of a typical grout comprising sand or other particles, such as a typical grout bonded by cement.

In a preferred embodiment of the second aspect of the invention, the varnish is an acrylic varnish or a polyurethane acrylic varnish, preferably a UV-curable varnish. This embodiment provides a durable grout analog.

A third aspect of the invention relates to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panels are provided with a coupling at a first pair of opposite edges, which coupling substantially co-operates with each other in the form of a male coupling and a female coupling, for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering. The male coupling portion is disposed at the male edges of the first pair of opposing edges. The female coupling is disposed at the female edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The surface of at least one of the male edge or the female edge is provided with a recess extending to a position deeper in the panel than the decorative layer. The recess comprises a polymer filling material, wherein the polymer filling material at least partially fills the recess, wherein the polymer filling material extends vertically from a position below the position of the decorative layer to a position above the position of the decorative layer in the panel. Preferably, the thickness of the polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm. The panel according to the third aspect provides a realistic grouter replica. When the polymer filler material extends vertically above the location of the decorative layer, the decorative layer will not be visible at either the convex or concave edges of the installed panel, as the polymer filler material conceals the decorative layer.

In a preferred embodiment of the third aspect of the invention, the surface of the polymeric filler material is at least partially and preferably over its entire surface parallel to the surface of the panel. This embodiment provides a more realistic simulation of the grout portion.

In a preferred embodiment of the third aspect of the invention the polymeric filler material provides a portion of the panel edge on which the polymeric filler material is disposed, more preferably wherein the polymeric filler material provides an edge on which the polymeric filler material is disposed at a height of at least 0.1mm, preferably at a height of at least 0.5 mm. Since the polymer filling material provides a partial edge, the polymer filling material forming the partial edge may contact the edge of the panel to which it faces. The polymeric filler material will cover and thus conceal the decorative layer at the edges of this veneer, thereby helping to form a more realistic grout analog.

More preferably, the portion of the panel edge provided by the polymeric filler material is a cut or milled edge. Such an embodiment may be achieved by providing a cutting or milling operation on the panel edge after the application of the polymer filling material in order to determine the distal edge of the polymer filling material in the recess.

In a preferred embodiment of the third aspect of the invention, the recess comprising the polymer filling material is configured to provide a grout analog in a covering comprising a plurality of such panels.

In a preferred embodiment of the third aspect of the invention, the width of the recess provided with the polymer filling material is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm. Such recess dimensions provide a grout portion replica similar to that used when installing and grouting tiles.

In a preferred embodiment of the third aspect of the invention, the panel comprises at least one central recess at its surface, which central recess extends to a position deeper in the panel than the decorative layer. The central recess is disposed parallel to the recess and parallel to the first pair of opposing edges. Preferably, the central recess is disposed midway between the first pair of opposed edges. The central recess includes a third polymeric filler material. The third polymeric filler material at least partially fills the central recess. The third polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the composition of the third polymeric filler material is the same as the composition of the polymeric filler material. Preferably, the thickness of the second polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

In a preferred embodiment of the third aspect of the invention, the concave edge comprises a first closing plane and the convex edge comprises a second closing plane. In a state in which two such panels are coupled at a first pair of opposite edges thereof, a first closure plane of a first such panel contacts a second closure plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to a surface of the coupled panel.

In a preferred embodiment of the third aspect of the invention, the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy resin, or the polymeric filler material comprises an acrylic adhesive.

Preferably, the polymeric filler material comprises a pigment, preferably provided in the joining panel as a grout part replica. Pigments allow to provide the desired color to the polymeric filler material. The color may be selected taking into account the decoration of the decorative layer. In this way, a realistic grouted section replica can be provided.

In a preferred embodiment of the third aspect of the invention, the polymeric filler material comprises sand and/or particles preferably having a particle size of more than 20 μm. Preferably, the sand and/or particles provide a roughened surface for the polymer filler material. Preferably, the sand and/or particles are provided at least at the surface of the polymer filling material. Such an embodiment provides a realistic replica of a typical grout comprising sand or other particles, such as a typical grout bonded by cement.

In a preferred embodiment of the third aspect of the invention, the panel comprises a second pair of opposed edges. The panels are provided with a second coupling part at a second pair of opposite edges, which substantially co-operates with each other in the form of a second male coupling part and a second female coupling part for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion is disposed at the second male edge of the panel. The second female coupling is disposed at a second female edge of the panel. The second coupling portion is provided with second mechanical locking means preventing the separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The surface of at least one of the second convex edge or the second concave edge is provided with a second recess extending to a position deeper in the panel than the decorative layer. The second recess includes a second polymer filler material, wherein the second polymer filler material at least partially fills the second recess. The second polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the thickness of the second polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm. When the second polymeric filler material extends vertically above the location of the decorative layer, the decorative layer will not be visible at the third and fourth edges of the installed panel as it is hidden by the polymeric filler material.

In a preferred embodiment of the third aspect of the invention the second polymeric filler material provides a portion of the panel edge on which the second polymeric filler material is disposed, preferably wherein the second polymeric filler material provides the edge on which the second polymeric filler material is disposed at a height of at least 0.1mm, preferably at a height of at least 0.5 mm. Since the second polymeric filler material provides a partial edge, the second polymeric filler material forming the partial edge may contact the edge of the panel to which it is coupled. The second polymeric filler material will cover and thus conceal the decorative layer at this joint edge, thereby helping to form a more realistic grout analog.

More preferably, the portion of the panel edge provided by the second polymeric filler material is a cut or milled edge. Such an embodiment may be achieved by providing a cutting or milling operation on the panel edge after the application of the second polymeric filler material in order to determine the distal edge of the second polymeric filler material in the second recess.

In a preferred embodiment of the third aspect of the invention, the polymeric filler material and the second polymeric filler material extend to the same distance from the panel surface. This embodiment provides a more realistic simulation of the grout portion.

In a preferred embodiment of the third aspect of the invention, the panel edge provided with the recess is joined with the panel edge provided with the second recess in the joint. The polymer filler material continues at the joint without interruption into the second polymer filler material; preferably, wherein the polymeric filler material and the second polymeric filler material have the same composition. This embodiment provides a more realistic simulation of the grout portion.

Preferably, the visible width of the polymeric filler material in the mounted condition at a first pair of opposed edges of two such panels is the same as the visible width of the second polymeric filler material in the coupled condition at a second pair of opposed edges of two such panels. This embodiment provides a more realistic simulation of the grout portion. Preferably, the composition of the second polymeric filler material is the same as the composition of the polymeric filler material.

In a preferred embodiment of the third aspect of the invention, the panel comprises at least one second central recess at its surface, which extends to a position deeper in the panel than the decorative layer. The at least one second central recess is disposed parallel to the second recess and parallel to the second pair of opposing edges. Preferably, the at least one second central recess is provided midway between the second pair of opposed edges. The at least one second central recess includes a fourth polymeric filler material. The fourth polymeric filler material at least partially fills the at least one second central recess. The fourth polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the composition of the fourth polymeric filler material is the same as the composition of the polymeric filler material. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

A fourth aspect of the invention relates to a panel. The panel includes a base and a top layer. The top layer includes a decorative layer and a wear layer. The panel includes a first pair of opposed edges; wherein the first pair of opposing edges includes a first edge and a second edge. When a plurality of such panels are mounted in a covering, a first edge is provided for facing and preferably for contacting a second edge of a second such panel. Preferably, wherein the panel is for adhering to a surface to form a covering for the surface. The surface of at least one of the first edge or the second edge is provided with a recess extending to a position deeper in the panel than the decorative layer. It is not excluded that the first edge and the second edge are provided with such recesses; however, it is also possible that only one of the first edge or the second edge is provided with such a recess. The recess comprises a polymer filling material, wherein the polymer filling material at least partially fills the recess. The polymeric filler material extends vertically from a position below the position of the decorative layer to a position vertically above the position of the decorative layer in the panel. Preferably, the thickness of the polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm. The panel according to the fourth aspect provides a realistic grouter imitation. When the polymer filler material extends vertically above the location of the decorative layer, the decorative layer will not be visible at the first and second edges of the installed panel as it is hidden by the polymer filler material.

In a preferred embodiment of the fourth aspect of the invention, the surface of the polymeric filler material is at least partially and preferably over its entire surface parallel to the surface of the panel. This embodiment provides a more realistic simulation of the grout portion.

In a preferred embodiment of the fourth aspect of the invention the polymeric filler material provides a portion of the panel edge on which the polymeric filler material is disposed, more preferably wherein the polymeric filler material provides an edge on which the polymeric filler material is disposed at a height of at least 0.1mm, preferably at a height of at least 0.5 mm. Since the polymer filling material provides a partial edge, the polymer filling material forming the partial edge may contact the edge of the panel to which it faces. The polymeric filler material will cover and thus conceal the decorative layer at the edges of this veneer, thereby helping to form a more realistic grout analog.

In a preferred embodiment of the fourth aspect of the invention, the recess comprising the polymer filling material is configured to provide a grout analog in a covering comprising a plurality of such panels.

In a preferred embodiment of the fourth aspect of the invention, the width of the recess provided with the polymer filling material is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm. Such recess dimensions provide a grout portion replica similar to that used when installing and grouting tiles.

In a preferred embodiment of the fourth aspect of the invention, the panel comprises a second pair of opposed edges. The second pair of opposing edges includes a third edge and a fourth edge; wherein, when a plurality of such panels are mounted in a covering, a third edge is provided for facing and preferably for contacting a fourth edge of a third such panel. Preferably, the panel is for adhering to a surface to form a covering for the surface. The surface of at least one of the third edge or the fourth edge is provided with a second recess extending to a position deeper in the panel than the decorative layer. The second recess includes a second polymer filler material. The second polymeric filler material at least partially fills the second recess. The second polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the thickness of the second polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm.

In a preferred embodiment of the fourth aspect of the invention, the second polymeric filler material provides a portion of the panel edge on which the second polymeric filler material is disposed, preferably wherein the second polymeric filler material provides an edge on which the second polymeric filler material is disposed at a height of at least 0.1mm, preferably at a height of at least 0.5 mm. Since the second polymeric filler material provides a partial edge, the second polymeric filler material forming the partial edge may contact the edge of the panel to which it is facing. The second polymeric filler material will cover and thus conceal the decorative layer at the edges of this veneer, thereby helping to form a more realistic grout analog.

In a preferred embodiment of the fourth aspect of the invention, the polymeric filler material and the second polymeric filler material extend to the same distance from the panel surface. This embodiment provides a more realistic simulation of the grout portion.

In a preferred embodiment of the fourth aspect of the invention, the panel edge provided with the recess is joined with the panel edge provided with the second recess in the joint. The polymer filler material is continuous at the joint without interruption into the second polymer filler material; preferably, wherein the polymeric filler material and the second polymeric filler material have the same composition. This embodiment provides a more realistic simulation of the grout portion.

Preferably, the visible width of the polymeric filler material in the mounted condition at a first pair of opposed edges of two such panels is the same as the visible width of the second polymeric filler material in the coupled condition at a second pair of opposed edges of two such panels. This embodiment provides a more realistic simulation of the grout portion.

Preferably, the composition of the second polymeric filler material is the same as the composition of the polymeric filler material.

In a preferred embodiment of the fourth aspect of the invention, the panel comprises at least one central recess at its surface, which central recess extends to a position deeper in the panel than the decorative layer. The central recess is disposed parallel to the recess and parallel to the first pair of opposing edges. Preferably, the central recess is disposed midway between the first pair of opposed edges. The central recess includes a third polymeric filler material. The third polymeric filler material at least partially fills the central recess. The third polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the composition of the third polymeric filler material is the same as the composition of the polymeric filler material. Preferably, the thickness of the second polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

In a preferred embodiment of the fourth aspect of the invention, the panel comprises at least one second central recess at its surface, which extends to a position deeper in the panel than the decorative layer. The at least one second central recess is disposed parallel to the second recess and parallel to the second pair of opposing edges. Preferably, the at least one second central recess is provided midway between the second pair of opposed edges. The at least one second central recess includes a fourth polymeric filler material. The fourth polymeric filler material at least partially fills the at least one second central recess. The fourth polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer. Preferably, the composition of the fourth polymeric filler material is the same as the composition of the polymeric filler material. Such an embodiment provides a panel that, after installation of the panel, provides an appearance that the covering installed with the panel comprises more and smaller panels than is practical.

In a preferred embodiment of the fourth aspect of the invention, the first edge comprises a first closing plane and the second edge comprises a second closing plane, wherein in a state in which two such panels are mounted at their first pair of opposite edges, the first closing plane of a first such panel contacts the second closing plane of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the mounted panel.

In a preferred embodiment of the fourth aspect of the invention, the first edge and the second edge are free of such a coupling portion which will provide a mechanical locking of two such panels when mounted in the covering.

In a preferred embodiment of the fourth aspect of the invention, the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy resin, or the polymeric filler material comprises an acrylic adhesive.

Preferably, the polymeric filler material comprises a pigment, preferably provided in the joining panel as a grout part replica. Pigments allow to provide the desired color to the polymeric filler material. The color may then be selected taking into account the decoration of the decorative layer. In this way, a realistic grouted section replica can be provided.

In a preferred embodiment of the fourth aspect of the invention, the polymeric filler material comprises sand and/or particles preferably having a particle size of more than 20 μm. Preferably, the sand and/or particles provide a roughened surface for the polymer filler material. Preferably, the sand and/or particles are provided at least at the surface of the polymer filling material. Such an embodiment provides a realistic replica of a typical grout comprising sand or other particles, such as a typical grout bonded by cement.

A fifth aspect of the invention relates to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panels are provided with a coupling at a first pair of opposite edges, which coupling substantially co-operates with each other in the form of a male coupling and a female coupling, for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering. The male coupling portion is disposed at the male edges of the first pair of opposing edges. The female coupling is disposed at the female edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The male edge, preferably the male coupling, comprises a section, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer, more preferably wherein the upper surface of the section is provided with a substantially uniform color. Preferably, the visual appearance of the upper surface of the segment differs from the visual appearance of the decorative layer over its entire surface. In the coupled state in which a first such panel is coupled to the concave edge of a second such panel at its convex edge, the concave edge overlaps a portion of the upper surface of the segment of the convex edge of the first such panel such that the portion of the upper surface of the segment of the convex edge of the first such panel is hidden from view while the portion of the upper surface of the segment is visible in a view perpendicular to the surface of the coupled panel. Preferably, the portion of the upper surface of the segment that is visible in a view perpendicular to the surface of the joining panel is at least 1.5mm wide, more preferably at least 2mm wide, more preferably at least 3mm wide, more preferably greater than 3.5mm wide, and preferably less than 5mm wide.

Such an embodiment provides a grout section replica while the overlap allows manufacturing variations, such as being hidden by the overlap due to the adjoining panel edges of the rectangular or square panels being non-orthogonal to each other.

In a preferred embodiment of the fifth aspect of the invention, at least a portion, preferably the entire upper surface, of the upper surface of the segment, seen in a view perpendicular to the surface of the coupling panel, is parallel to the surface of the floor panel. This embodiment helps to create a more realistic imitation of the grout.

In a preferred embodiment of the fifth aspect of the invention, both the male edge and the female edge comprise a chamfer. More preferably, the bevel at the convex edge and the concave edge is a convex bevel, preferably wherein the bevel edge is partially or fully curved. This embodiment helps to create a more realistic imitation of the grout.

Preferably, the chamfer at the convex edge is substantially a mirror image of the chamfer at the concave edge. This embodiment helps to create a more realistic imitation of the grout.

Preferably, the bevel has an irregular cross-section along the edge. This embodiment allows to provide a realistic imitation of the covering comprising the brick, as the brick may show inclined edges with irregular cross-sections.

In a preferred embodiment of the fifth aspect of the invention, the concave edge of the second such panel contacts the upper surface of the section of the convex edge of the first such panel in a first region of the upper surface of the convex coupling portion, the section being arranged below the surface of the floor panel and below the location of the decor layer. The upper surface of the male edge, preferably the upper surface of the male coupling, comprises a second region farther than the first region, wherein the female edge of a second such panel overlaps the second region without touching it, but such that the second region is hidden from view. In such an embodiment, a panel comprising a varnish is allowed to be provided in the second area. During installation of the panel, there is no risk of such varnish being damaged or removed, thereby improving the quality of the grout part replica.

More preferably, the second region is further from the surface of the floor panel than the first region.

In a preferred embodiment of the fifth aspect of the invention, at least one recess is provided on a surface of the panel parallel to the first pair of opposite edges, wherein the at least one recess is delimited by the surface of the panel on both sides parallel to the first pair of opposite edges, wherein the bottom of the recess has substantially the same color as the part of the upper surface of the segment of the convex edge, which segment is not visible in a view perpendicular to the surface of the joined panel. This embodiment helps to create a more realistic imitation of the grout.

More preferably, the depth of the at least one recess is substantially the same as the distance of the section of the convex edge from the surface of the panel. This embodiment helps to create a more realistic imitation of the grout.

Preferably, both the male edge and the female edge comprise a chamfer. The sides of the at least one recess parallel to the first pair of opposite edges are provided with bevels having substantially the same configuration as the bevels of the male and female edges, respectively. This embodiment helps to create a more realistic imitation of the grout.

In a preferred embodiment of the fifth aspect of the invention, at least a part of the section of the convex edge, the upper surface of which is arranged below the surface of the floor panel and below the location of the decor layer, is provided with a varnish layer. Preferably, when the male and female edges of the first pair of opposite edges are provided with a bevel, the bevel is at least partially provided with the same varnish layer. More preferably, the varnish layer on the bevel extends from below the decorative layer, more preferably from the bottom of the bevel, to a position above the decorative layer. This embodiment provides an even more realistic imitation of the grout.

Preferably, the varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm. Such an embodiment provides a realistic replica of a typical grout comprising sand or other particles, such as a typical grout bonded by cement.

More preferably, at least a portion of the sand and/or particles are present at the surface of the varnish layer; more preferably thereby creating a roughened surface of the recess. This embodiment provides an even more realistic imitation of the grout used with the tile.

Preferably, the varnish is an acrylic varnish, a polyurethane varnish or a polyurethane acrylic varnish, preferably a UV curable varnish.

In a preferred embodiment wherein the first region is provided, preferably the first region does not comprise a varnish layer. This embodiment is particularly preferred because there is no risk of damaging the varnish layer when the panels are joined at the first pair of opposite edges of the panels.

In a preferred embodiment of the fifth aspect of the invention, the coupling at the first pair of opposite edges is configured such that in case the panel is coupled with another such panel at its respective edge of the first pair of opposite edges, the mechanical locking means preventing the locking panels from separating in a direction perpendicular to the coupling edge and parallel to the surface of the coupling panel, while allowing a play of at least 0.2mm in this direction; preferably less than 0.5mm. This embodiment allows for compensating manufacturing tolerances during panel installation. For example, when the panel has a second pair of opposing edges in addition to the first pair of opposing edges, the second pair of opposing edges is at a 90 ° angle to the first pair of opposing edges. This angle may be different from 90 ° due to manufacturing tolerances. This play allows to compensate for this variation. This embodiment is of particular interest when the panel is square, for example with width sides greater than 300mm, or even greater than 400mm or even greater than 500 mm.

In a preferred embodiment, the play is allowed at least partly by elastic deformation of at least one coupling part, preferably by a female coupling part; or alternatively, the play does not require elastic deformation of at least one coupling portion.

Preferably, the allowance of play is made at least in part by the relative position in a direction perpendicular to the first pair of opposite edges, which is parallel to the surfaces of the panels coupled at their first pair of opposite edges overlapping the concave edges of the upper surface of the segment of the convex edge. More preferably, the overlapping sections of the convex edges are parallel to the surface of the panel.

In a preferred embodiment of the fifth aspect of the invention, the portion of the upper surface of the segment visible in a view perpendicular to the surface of the joining panel is configured to provide a grout analog in a covering comprising a plurality of such panels.

In a preferred embodiment of the fifth aspect of the invention, the panel comprises a second pair of opposed edges. The panels are provided with a second coupling part at a second pair of opposite edges, which substantially co-operates with each other in the form of a second male coupling part and a second female coupling part for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion is disposed at a second male edge of the second pair of opposing edges. The second female coupling is disposed at a second female edge of the panel. The second coupling portion is provided with second mechanical locking means preventing the separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The second male edge, preferably the second male coupling, comprises a section, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer. Preferably, the upper surface of the section of the second convex edge is provided with a substantially uniform color. Preferably, wherein the visual appearance of the upper surface of the segment of the second convex edge differs from the visual appearance of the decorative layer over its entire surface. In the coupled state in which a first such panel is coupled to the second concave edge of a third such panel at its second convex edge, the second concave edge of the third such panel overlaps a portion of the upper surface of the segment of the second convex edge of the first such panel such that a portion of the upper surface of the segment of the second convex edge of the first such panel is hidden from view while a portion of the upper surface of the segment of the second convex edge of the first such panel is visible in a view perpendicular to the surface of the coupled panel. Preferably, wherein the portion of the upper surface of the section of the second convex edge visible in a view perpendicular to the surface of the coupling panel is at least 1.5mm wide, more preferably at least 2mm wide, more preferably at least 3mm wide, more preferably greater than 3.5mm wide, and preferably less than 5mm wide. This embodiment provides a realistic simulation of the grout portion.

Preferably, at least a portion, preferably the entire upper surface, of the upper surface of the section of the second convex edge, visible in a view perpendicular to the surfaces of the first and third such panels being joined, is parallel to the surfaces of the panels. This embodiment provides a more realistic simulation of the grout portion.

Preferably, the second male edge and the second female edge each comprise a chamfer. More preferably, the slope of the second convex edge and the second concave edge is a convex slope, preferably wherein the slope edge is partially or fully curved.

Preferably, the slope at the second convex edge is substantially a mirror image of the slope of the second concave edge.

Preferably, the bevel has an irregular cross-section along the edge.

Each of the embodiments in which the chamfer is provided provides a more realistic simulation of the grout portion.

Preferably, the distance from the surface of the panel of the segment of the male coupling edge is substantially the same as the distance from the surface of the panel of the segment of the second male edge. This embodiment helps to create a more realistic imitation of the grout.

In a preferred embodiment of the fifth aspect of the invention, the portion of the upper surface of the segment of the male edge that is visible in a view perpendicular to the surface of the coupling panel has substantially the same color as the portion of the upper surface of the segment of the second male edge that is visible in a view perpendicular to the surface of the coupling panel. This embodiment helps to create a more realistic imitation of the grout.

In a preferred embodiment of the fifth aspect of the invention, the second concave edge of the third such panel contacts the upper surface of the section of the second convex edge of the first such panel in the first region of the upper surface of the second convex edge, the section being arranged below the surface of the floor panel and below the location of the decor layer. The upper surface of the second male edge, preferably the upper surface of the second male coupling portion, comprises a second region that is not as far as the first region, wherein the second female edge of a third such panel overlaps the second region without contacting the second region, but such that the second region is hidden from view.

Preferably, the second region of the second male edge is at a greater distance from the surface of the floor panel than the first region of the second male coupling portion.

In a preferred embodiment of the fifth aspect of the invention, the coupling at the second pair of opposite edges is configured such that in a state in which the panel is coupled with another such panel at its respective edge of the second pair of opposite edges, the mechanical locking means preventing the locking panels from separating in a direction perpendicular to the second pair of opposite edges and parallel to the surfaces of the coupled panels, while allowing a play of at least 0.2mm and preferably less than 0.5mm in that direction.

Preferably, play in a direction perpendicular to the second pair of opposite edges and parallel to the surface of the coupling panel is allowed at least partly by elastic deformation of at least one second coupling part, preferably by elastic deformation of a second female coupling part. Or wherein the play does not require elastic deformation of at least one coupling portion.

In a preferred embodiment of the fifth aspect of the invention, play in a direction perpendicular to the second pair of opposite edges and parallel to the surfaces of the joined panels is allowed at least in part by the relative position in a direction perpendicular to the first pair of opposite edges, the first pair of opposite edges being parallel to the surfaces of the joined panels at their second pair of opposite edges overlapping the second concave edge of the upper surface of the segment of the second convex edge.

In the same way as when play is allowed at the first pair of opposite edges, play at the second pair of opposite edges allows handling manufacturing tolerances during installation, in particular with respect to the angle between the first and second pair of opposite edges.

In a preferred embodiment of the fifth aspect of the invention, the non-convex edge, but the concave edge, preferably the concave coupling, comprises a segment, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer. More preferably, the upper surface of the segment is provided with a substantially uniform color. In a coupled state in which a first such panel is coupled to a concave edge of a second such panel at its convex edge, rather than the concave edge overlapping, the convex edge overlaps a portion of the upper surface of the segment of the concave edge of the first such panel such that a portion of the upper surface of the segment of the concave edge of the first such panel is hidden from view while a portion of the upper surface of the segment is visible in a view perpendicular to the surface of the coupled panel. Such an embodiment provides a grout section replica while the overlap allows manufacturing variations, such as being hidden by the overlap due to the adjoining panel edges of the rectangular or square panels being non-orthogonal to each other.

In a first option of the first pair of opposing edges of any embodiment of the first, third or fifth aspects of the invention, the male edge comprises a tongue, which preferably extends in a direction parallel to the panel surface, to provide the male coupling. The concave edge comprises a groove providing a concave coupling, wherein the groove is delimited by an upper lip and a lower lip, preferably wherein the lower lip extends further than the upper lip.

In a preferred embodiment according to this first option, the lower lip comprises a locking element. The bottom of the tongue comprises a locking element. In a state in which two such panels are coupled at their first pair of opposite edges, the locking elements of the lower lip contact the locking elements of the tongue, thereby establishing a locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel; preferably, wherein the locking is established by pretensioning.

More preferably, the locking element of the lower lip is disposed distally of the distal end of the upper lip.

In a preferred embodiment according to this first option, in a state in which two such panels are coupled at their first pair of opposite edges, the bottom of the tongue is in contact with the upper surface of the lower lip at least two different segments separated by a gap.

In a preferred embodiment according to the first option, the coupling portions of the first pair of opposite edges are configured such that a first such panel can be coupled with its male edge into the female edge of a second such panel by a diagonal movement and/or by a substantially horizontal sliding movement with a snap action. This embodiment provides a simple way of coupling the panels for floating mounting.

In a preferred embodiment according to this first option, the recess is provided at the convex edge; wherein in a state in which two such panels are coupled at their first pair of opposite edges, the recess extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges to at least half of the distance between the distal end of the recess on the one hand and the middle of the section of the locking element of the lower lip that will be in contact with the locking element of the tongue on the other hand. More preferably, in the condition in which two such panels are coupled at their first pair of opposite edges, the recess extends in a proximal direction, in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges, vertically above a locking element of at least the lower lip, which will contact the locking element of the tongue. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a preferred embodiment according to this first option, the recess is provided at the concave edge. The recess extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges to at least half of the distance between the distal end of the recess on the one hand and the proximal end of the groove on the other hand. More preferably, the recess extends in a proximal direction beyond the proximal end of the groove in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a preferred embodiment according to this first option, the portion of the upper surface of the segment of the convex edge that is visible in a view perpendicular to the surface of the coupled panel extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges to at least half of the distance between the distal end of the tongue on the one hand and the middle of the segment of the locking element of the lower lip on the other hand, which locking element will contact the locking element of the tongue in a state in which two such panels are coupled at their first pair of opposite edges. More preferably, the portion of the upper surface of the segment of the male edge visible in a view perpendicular to the surface of the coupled panel extends at least vertically above the locking element of the lower lip in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges, which in the coupled state of two such panels at their first pair of opposite edges will contact the locking element of the tongue. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a second option of the first pair of opposing edges of any embodiment of the first, third or fifth aspects of the invention, the convex edge comprises a downwardly directed upward hook; wherein the downwardly directed upward hook comprises and preferably consists of a lip with a downwardly directed locking element, which lip forms a male coupling. The concave edge includes an upwardly directed downward hook; wherein the upwardly directed lower hook comprises and preferably consists of a lip with an upwardly directed locking element, which lip defines a female coupling in the form of a coupling recess on its proximal side. The male coupling portion and the female coupling portion are configured such that the first and second such panels are couplable to each other at their respective first pair of opposing edges by movement substantially perpendicular to the surfaces of the first and second such panels. Such an embodiment provides for easy panel installation in a floating cover (e.g., a floating floor cover).

In a preferred embodiment according to this second option, the edges of the first pair of opposite edges are provided with mechanical locking means such that in the coupled state of a first such panel with a second such panel at its first pair of opposite edges, a locking perpendicular to the surface of the panel is provided at the distal end of the panel pointing downwards towards the locking element.

In a preferred embodiment according to the second option, the locking means comprises an undercut at the concave edge, wherein the undercut is adapted to interact with a downwardly directed locking element of the coupling panel, preferably to interact with a distal end of the downwardly directed locking element, thereby establishing a lock perpendicular to the panel surface at the distal end of the downwardly directed locking element of the panel. This embodiment provides an effective locking of the coupling panel.

In a preferred embodiment according to this second option, the first pair of opposite edges is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end pointing upwards towards the locking element.

In a preferred embodiment according to this second option, no locking in a direction perpendicular to the surfaces of the panels coupled at the first pair of opposite edges thereof is provided both at the proximal end pointing upwards towards the locking element and at the proximal end of the locking unit pointing downwards.

In a preferred embodiment according to this second option, the proximal end directed downwards towards the locking element comprises a first inclined contact surface; wherein the proximal end of the upwardly directed locking element comprises a second inclined contact surface; wherein in a state in which two such panels are coupled at a first pair of opposite edges thereof, a first inclined contact surface of a first such panel contacts a second inclined contact surface of a second such panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel. Preferably, wherein the locking is established by pretensioning.

In a preferred embodiment according to this second option, the first pair of opposite edges is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end pointing upwards towards the locking element; wherein the lock is provided with or without contact.

More preferably, the distal end directed upwards towards the locking element comprises an undercut or a protrusion, wherein a bottom surface of the undercut or protrusion is provided for establishing the locking in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment according to this second option, the upwardly directed locking element touches the proximal end of the panel edge, which is coupled to the proximal end at the distal end directed upwardly towards the locking element; and/or the distal end of the upwardly directed locking element comprises an undercut and the upwardly directed locking element contacts the proximal end of the panel edge, which is coupled to the proximal end at the undercut of the upwardly directed locking element. In both alternatives, the locking is established in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment according to this second option, the proximal end of the male edge comprises a corresponding hook, wherein the corresponding hook is arranged for interaction with an upwardly directed locking element of the coupling panel to establish a lock in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment according to this second option, the recess is provided at the convex edge. The recess extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges to at least half of the distance between the distal end of the recess on the one hand and the middle of the section pointing downwards towards the proximal end of the locking element, which in the coupled state will contact the proximal end pointing upwards towards the locking element. More preferably, the recess extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges beyond the proximal end of the downwardly directed locking element. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a preferred embodiment according to this second option, the recess is provided at the concave edge. The width of the recess is at least 30% of the panel thickness, preferably at least 40% of the panel thickness, more preferably at least 60% of the panel thickness; and preferably less than 100% of the panel thickness. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a preferred embodiment according to this second option, the portion of the upper surface of the segment of the convex edge visible in a view perpendicular to the surface of the coupling panel extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges to at least half of the distance between the distal end of the recess on the one hand and the middle of the segment directed downwards towards the proximal end of the locking element, which in the coupled state will contact the proximal end directed upwards towards the locking element. More preferably, wherein the portion of the upper surface of the segment of the convex edge visible in a view perpendicular to the surface of the coupling panel extends in a proximal direction beyond the proximal end of the downwardly directed locking element in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges. This embodiment provides a recess with a width well suited to providing a grout dummy after panel installation.

In a first option of the second pair of opposing edges of any embodiment of the first, third or fifth aspects of the invention, the second male edge comprises a second tongue, preferably extending in a direction parallel to the panel surface, providing a second male coupling. The second concave edge comprises a second groove providing a second concave coupling, wherein the second groove is delimited by a second upper lip and a second lower lip, preferably wherein the second lower lip extends further than the second upper lip.

In a preferred embodiment according to this first option, the second lower lip comprises a second locking element, the bottom of the second tongue comprises a second locking element, wherein, in a state in which two such panels are coupled at their second pair of opposite edges, the second locking element of the second lower lip contacts the second locking element of the second tongue, thereby establishing a locking of the coupling panel at the second pair of opposite edges of the coupling panel in a direction perpendicular to the coupling edge and parallel to the surfaces of the coupling panel; more preferably, wherein the locking is established by pretensioning.

Preferably, the second locking element of the second lower lip is disposed distally of the distal end of the second upper lip.

In a preferred embodiment according to this first option, in a state in which two such panels are coupled at their second pair of opposite edges, the bottom of the second tongue is in contact with the upper surface of the second lower lip at least two different segments separated by a gap.

In a preferred embodiment according to this first option, the coupling portions of the second pair of opposite edges are configured such that a first such panel can be coupled with its second male edge into the second female edge of a third such panel by a diagonal movement and/or by a substantially horizontal sliding movement with a snap action.

In a second option of the second pair of opposing edges of any embodiment of the first, third or fifth aspects of the invention, the second convex edge comprises a second downwardly directed upward hook; wherein the second downwardly directed upward hook comprises and preferably consists of a lip with a second downwardly directed locking element, which lip forms a second male coupling. The second concave edge includes a second upwardly directed downward hook; wherein the second upwardly directed downward hook comprises and preferably consists of a lip with a second upwardly directed locking element, which lip defines a second female coupling in the form of a second coupling recess on its proximal side. The second male coupling portion and the second female coupling portion are configured such that two such panels may be coupled to each other at their respective second pair of opposing edges by movement substantially perpendicular to the surfaces of the two coupled such panels. This embodiment provides for easy installation of the panel.

In a preferred embodiment according to this second option, the edges of the second pair of opposite edges are provided with mechanical locking means such that in a state in which a first such panel is coupled with a third such panel at its second pair of opposite edges, a locking perpendicular to the panel surface is provided at the distal end of the second downwardly directed locking element of the panel. This embodiment provides an effective locking of the installed panel.

In a preferred embodiment according to this second option, the locking means comprises a second undercut at the second concave edge, wherein the second undercut is for interacting with a second downwardly directed locking element of the coupling panel, preferably for interacting with a locking element at the distal end of the second downwardly directed locking element, thereby establishing a lock perpendicular to the panel surface at the distal end of the second downwardly directed locking element of the panel. This embodiment provides an effective locking of the installed panel.

In a preferred embodiment according to this second option, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element.

In a preferred embodiment according to this second option, no locking between the panels coupled at their second pair of opposite edges in a direction perpendicular to the panel surface is provided at both the proximal end of the second upwardly directed locking element and the proximal end of the second downwardly directed locking element.

In a preferred embodiment according to this second option, the proximal end of the second downwardly directed locking element comprises a third inclined contact surface; wherein the proximal end of the second upwardly directed locking element comprises a fourth inclined contact surface; wherein in a coupled condition in which two such panels are coupled at a second pair of opposed edges thereof, the third inclined contact surface of a first such panel contacts the fourth inclined contact surface of a third such panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel; preferably, wherein the locking is established by pretensioning. This embodiment provides an effective locking of the installed panel.

In a preferred embodiment according to this second option, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, a locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element; wherein the lock is provided with or without contact. This embodiment provides an effective locking of the installed panel.

More preferably, the distal end of the second upwardly directed locking element comprises a second undercut or a second protrusion, wherein a bottom surface of the second undercut or the second protrusion is provided for establishing the locking in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment according to this second option, the second upwardly directed locking element contacts the proximal end of the panel edge, which is coupled to the proximal end at the distal end of the second upwardly directed locking element; and/or the distal end of the second upwardly directed locking element comprises a second undercut and the second upwardly directed locking element contacts the proximal end of the panel edge, which is coupled thereto at the second undercut of the second upwardly directed locking element. In both alternatives, the locking is established in a direction perpendicular to the surface of the coupling panel.

More preferably, the proximal end of the second male edge comprises a second corresponding hook, wherein the second corresponding hook is arranged for interaction with a second upwardly directed locking element of the coupling panel to establish locking in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment according to this second option, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end pointing upwards towards the locking element.

In a preferred embodiment of the first, third or fifth aspect of the invention, the first and second pairs of opposed edge coupling portions are configured such that a plurality of such panels may be mounted into the covering by a folded-down mounting method. In this way, a very simple and efficient installation of panels in a floating floor covering is achieved, wherein no grouting is required after the panel is installed, while a realistic grout part replica is obtained.

A sixth aspect of the invention is directed to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The panels are provided with a coupling at a first pair of opposite edges, which coupling essentially co-operates with each other in the form of tongues and grooves for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering. The tongue is disposed at the convex edge of the first pair of opposing edges; preferably, wherein the tongue extends at the convex edge in a direction parallel to the panel surface. The groove is disposed at the concave edges of the first pair of opposing edges; wherein the recess is delimited by an upper lip and a lower lip, preferably wherein the lower lip extends further than the upper lip. The coupling portion is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the respective coupling edges and in a direction perpendicular to the panel surfaces in a plane parallel to the coupling panels. The surface of the convex edge is provided with a recess, preferably wherein the recess extends to a position deeper in the panel than the decorative layer. Preferably, the width of the recess is at least 1.5mm, more preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm.

The panel includes a second pair of opposing edges; wherein the panels are provided with a second coupling part at a second pair of opposite edges, which substantially co-operate with each other in the form of a second male coupling part and a second female coupling part, for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion is disposed at a second male edge of the second pair of opposing edges; wherein the second female coupling is disposed at the second female edge of the panel. The second coupling portion is provided with second mechanical locking means preventing the two such panels coupled at their second pair of opposite edges from being separated in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The second convex edge includes a downwardly directed upwardly hooked portion; wherein the downwardly directed upward hook comprises and preferably consists of a lip with a downwardly directed locking element, which lip forms the second male coupling part. The second concave edge includes an upwardly directed downward hook; wherein the upwardly directed lower hook comprises and preferably consists of a lip with an upwardly directed locking element, which lip defines a second female coupling in the form of a coupling recess on its proximal side. The second male coupling portion and the second female coupling portion are configured such that two such panels may be coupled to each other at their respective second pair of opposing edges by movement substantially perpendicular to the surfaces of the two such coupled panels.

The coupling portions of the first pair of opposing edges and the second coupling portions of the second pair of opposing edges are configured such that a plurality of such panels can be coupled into the covering using a folded-down mounting method. The surface of the second concave edge or the surface of the second convex edge is provided with a second recess, preferably wherein the second recess extends to a position deeper in the panel than the decorative layer. The width of the second recess is preferably at least 1.5mm, more preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm. Preferably, the width of the second recess is substantially the same as the width of the recess.

A benefit of the sixth aspect of the invention is that a panel can be provided that can provide realistic grouted section simulations without the need for grouting. The recess and the second recess provide a copy of the grout portion, which is already present in the panel prior to mounting the panel in the covering. The panel is floatably mounted in the floor covering; and no additional operations are required after the mechanical coupling to display realistic grouter simulations.

In an embodiment of the sixth aspect of the invention, the lower lip comprises a locking element and the bottom of the tongue comprises a locking element. Wherein in a state in which two such panels are coupled at their first pair of opposite edges, the locking elements of the lower lip contact the locking elements of the tongue, thereby establishing a locking of the coupling panel at the first pair of opposite edges of the coupling panel in a direction perpendicular to the coupling edges and parallel to the surface of the coupling panel; preferably, wherein the locking is established by pretensioning. Such a panel is floatably mounted, wherein a good locking of the panel is obtained.

In a preferred embodiment of the sixth aspect of the invention, the locking element of the lower lip is arranged distally of the distal end of the upper lip. The recess extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges to at least half the distance between the distal end of the recess on the one hand and the middle of the segment of the locking element of the lower lip that is to be in contact with the locking element of the tongue in a state in which two such panels are coupled at their first pair of opposite edges on the other hand. More preferably, the recess extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges, at least vertically above the locking element of the lower lip that will be in contact with the locking element of the tongue in a state in which two such panels are coupled at their first pair of opposite edges. Due to the width of the recess, this embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the sixth aspect of the invention, in a state in which two such panels are coupled at their first pair of opposite edges, the bottom of the tongue is in contact with the upper surface of the lower lip at least two different segments separated by a gap.

In a preferred embodiment of the sixth aspect of the invention, the coupling portions of the first pair of opposed edges are configured such that a first such panel can be coupled with its convex edge into the concave edge of a second such panel by a diagonal movement. Such an application facilitates the installation of the panel.

In a preferred embodiment of the sixth aspect of the invention, the proximal end of the second concave edge of the second pair of opposing edges comprises a third closing plane, wherein the distal end of the second convex edge of the second pair of opposing edges comprises a fourth closing plane, wherein in a state in which two such panels are coupled at their second pair of opposing edges, the third closing plane of a first such panel contacts the fourth closing plane of a third such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panels. The edges of the second pair of opposite edges are provided with mechanical locking means such that in the coupled state of a first such panel with a third such panel at the second pair of opposite edges thereof, a contact area is established between the mechanical locking means, thereby providing a locking perpendicular to the panel surface at the distal end of the downwardly directed locking element of the panel; preferably, the extension of the contact surface intersects the contact area between the mechanical locking means (which improves the locking of the panels and thus prevents play in the coupled state of the panels, which would be detrimental for a good looking grout copy). More preferably, the locking means comprises an undercut at the second concave edge, wherein the undercut interacts with a downwardly directed locking element of the coupling panel and preferably with a locking element 81 at the distal end of the second downwardly directed locking element 66, thereby establishing a lock perpendicular to the panel surface at the distal end of the downwardly directed locking element of the panel.

In a preferred embodiment of the sixth aspect of the invention, no lock is established at the second pair of opposite edges between the distal end of the second male edge and the proximal end of the second female edge in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the sixth aspect of the invention, no locking in a direction perpendicular to the surfaces of the panels coupled at their second pair of opposite edges is provided both at the proximal end pointing upwards towards the locking element and at the proximal end pointing downwards towards the locking element.

In a preferred embodiment of the sixth aspect of the invention, the proximal end of the downwardly directed locking element comprises a first inclined contact surface; wherein the proximal end of the upwardly directed locking element comprises a second inclined contact surface; wherein in a state in which two such panels are coupled at their second pair of opposite edges, a first inclined contact surface of a first such panel contacts a second inclined contact surface of a third such panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel; preferably, wherein the locking is established by pretensioning.

In a preferred embodiment of the sixth aspect of the invention, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end directed upwards towards the locking element; wherein the lock is provided with or without contact. More preferably, the distal end directed upwards towards the locking element comprises an undercut or a protrusion, wherein a bottom surface of the undercut or protrusion is provided for establishing the locking in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the sixth aspect of the invention, the upwardly directed locking element contacts a proximal end of the panel edge, the upwardly directed locking element being coupled with the proximal end at a distal end of the upwardly directed locking element; and/or the distal end of the upwardly directed locking element comprises an undercut and the upwardly directed locking element contacts the proximal end of the edge of the panel, which is coupled with the proximal end at the undercut of the upwardly directed locking element. In each of these options, an efficient and effective locking is established in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the sixth aspect of the invention, the proximal end of the second male edge comprises a corresponding hook, wherein the corresponding hook is arranged for interaction with an upwardly directed locking element of the coupling panel to establish locking in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the sixth aspect of the invention, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end directed upwards towards the locking element.

In a preferred embodiment of the sixth aspect of the invention, the recess and the second recess are provided with a varnish layer, wherein the varnish layer of the recess is at least partially visible in a state in which the panel is coupled with another such panel at its respective first pair of opposite edges, and wherein the varnish layer of the second recess is at least partially visible in a state in which the panel is coupled with another such panel at its respective second pair of opposite edges. Preferably, both varnish layers have a thickness of less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm.

Preferably, at least a portion of the side edges of the recess and the second recess are provided with a varnish layer; more preferably, the varnish layer extends from the bottom of the recess to a position closer to the panel surface than the decorative layer at the sides of the recess and the second recess.

Preferably, the panel edge opposite the edge comprising the recess and the panel edge opposite the edge comprising the second recess are at least above the segment provided with the varnish layer; more preferably, the varnish layer at these edges extends from below the location of the decorative layer to a location above the location of the decorative layer. More preferably, the varnish layer at these edges is provided on a bevel at these edges. More preferably, all the varnish layers have the same composition and appearance. According to such an embodiment, the decorative layer is hidden from view at the side edges of the recess and the second recess and at the edges opposite to the edges comprising the recess and the second recess, respectively. Such an embodiment provides an even more realistic grout dummy coupling the panels, wherein the realistic grout dummy is already present in the panels such that no grout operation is required after panel installation.

In a preferred embodiment of the sixth aspect of the invention, wherein a varnish layer is provided, the varnish layer of the recesses and the second recesses comprises sand and/or particles preferably having a particle size of more than 20 μm.

In a preferred embodiment of the sixth aspect of the invention, the first and/or second pair of opposite edges are provided with bevels.

In a preferred embodiment of the sixth aspect of the invention, the proximal ends of the concave edges of the first pair of opposing edges comprise a first closing plane, wherein the distal ends of the convex edges of the first pair of opposing edges comprise a second closing plane, wherein in a state in which two such panels are coupled at their first pair of opposing edges, the first closing plane of a first such panel contacts the second closing plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panels.

In a preferred embodiment of the sixth aspect of the invention, the proximal end of the second concave edge of the second pair of opposing edges comprises a third closing plane, wherein the distal end of the second convex edge of the second pair of opposing edges comprises a fourth closing plane, wherein in a state in which two such panels are coupled at their second pair of opposing edges, the third closing plane of a first such panel contacts the fourth closing plane of a third such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panels.

In a preferred embodiment of the sixth aspect of the invention, the polymeric filler material at least partially fills the recess and the second recess, wherein the polymeric filler material extends vertically from a position below the position of the decorative layer to a position vertically above the position of the decorative layer in the panel. This embodiment provides a realistic grout dummy that is already present on the panel prior to installation, such that no grout operation is required after panel installation, while a realistic grout dummy is obtained. Preferably, the thickness of the polymeric filler material is greater than 400 μm, even more preferably greater than 500 μm, even more preferably greater than 700 μm.

More preferably, the surfaces of the polymeric filler material in the recess and the second recess are at least partially and preferably over their entire surfaces parallel to the surface of the panel.

More preferably, the polymeric filler material provides a portion of the panel edge on which the polymeric filler material is disposed. More preferably, the polymeric filler material provides an edge on which the polymeric filler material is disposed at least more than 0.1mm (preferably more than at least 0.5 mm). Even more preferably, the portion of the panel edge provided by the polymeric filler material is a cut or milled edge. Such an embodiment may be achieved by providing a cutting or milling operation on the panel edge after the application of the polymer filling material in order to determine the distal edge of the polymer filling material in the recess and/or in the second recess.

Preferably, in embodiments of the sixth aspect of the invention wherein a polymeric filler material is used, the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy resin; or the polymeric filler material comprises an acrylic adhesive.

Preferably, the polymeric filler material comprises sand bonded by a polymeric binder, such as sand bonded by an epoxy or acrylic binder.

Preferably, the polymeric filler material comprises a pigment, preferably for providing the polymeric filler material in the joining panel as a grout part replica. This embodiment allows setting the color of the filling material and thus the color of the filling material imitation portion, so that not only a realistic filling material imitation portion can be realized, but also the color can be set taking into account the decoration of the decorative layer.

Preferably, the polymeric filler material comprises sand and/or particles preferably having a particle size of more than 20 μm at least at its visible surface. More preferably, the sand and/or particles provide a roughened surface for the polymeric filler material. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the sixth aspect of the invention, the recess comprises a bottom and a side proximal to the bottom, wherein the bottom is preferably a flat bottom.

In a preferred embodiment of the sixth aspect of the invention, the second recess comprises a bottom and a side proximal to the bottom, wherein the bottom is preferably a flat bottom.

In a preferred embodiment of the sixth aspect of the invention, the cross-section of the recess perpendicular to the panel edge provided with the recess is substantially the same as the cross-section of the second recess perpendicular to the panel edge provided with the second recess. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the sixth aspect of the invention, the panel edge provided with the recess is joined with the panel edge provided with the second recess; wherein the recess continues in the joint without interruption into the second recess. This embodiment provides an even more realistic imitation of the grout.

A seventh aspect of the invention relates to a panel. The panel includes a base and a top layer. The top layer includes a decorative layer and a wear layer. Preferably, the decorative layer comprises a printed film. The panels are provided with coupling parts at a first pair of opposite edges, which coupling parts substantially cooperate with each other in the form of male coupling parts and female coupling parts for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering; the male coupling portion is disposed at the male edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The female coupling is disposed at the female edges of the first pair of opposing edges. The male coupling portion includes a tongue. The female coupling includes a groove defined by an upper lip and a lower lip. Preferably, the lower lip extends further than the upper lip. The lower lip comprises a locking element and the bottom of the tongue comprises a locking element, wherein in a state in which two such panels are coupled at their first pair of opposite edges, the locking element of the lower lip contacts the locking element of the tongue, thereby establishing a locking of the coupling panel at the first pair of opposite edges of the coupling panel in a direction perpendicular to the coupling edges and parallel to the surfaces of the coupling panel. Preferably, this locking is established by pretensioning. In the coupled condition of the male edge with the female edge of another such panel, the upper surface of the tongue contacts the bottom of the upper lip. Preferably, the contact is substantially parallel to the panel surface from the contact, or the contact forms an angle with the panel surface of less than 5 °; this embodiment is advantageous because it facilitates the relative sliding of the panel edges, allowing to accommodate the expansion and contraction of the panel after installation of the panel.

The surface of the convex edge is provided with a recess, preferably comprising at least a section parallel to the panel surface. The upper lip includes a distal portion extending from the panel edge. This distal portion may preferably be provided as a nose. The bottom surface of the distal portion is preferably disposed in the base. In the coupled state of the concave edge with the convex edge of another such panel, the distal portion of the upper lip of the concave edge at least partially overlaps the recess at the surface of the convex edge. Preferably, this overlap provides contact between the bottom of the distal portion and the recess, more preferably, this contact provides pretension. The benefit of this contact is to prevent moisture penetration between the joined edges of the installed panels. This benefit is even more pronounced when the contact is provided with a pretension. This pretension can be achieved by providing overlapping profile designs.

Preferably, the overlap provides a gap between the bottom of the distal portion and the bottom of the recess; more preferably, the gap between the bottom of the distal portion and the bottom of the recess is at least 0.1mm, more preferably less than 0.3mm, and more preferably at most 0.2mm. A benefit of this embodiment is that production tolerances may be employed during installation of the panel.

The overlap between the distal portion and the recess at the surface of the convex edge is provided at a vertical distance from the contact between the upper surface of the tongue and the bottom surface of the upper lip. The vertical distance between the overlap between the distal portion and the recess at the surface of the convex edge on the one hand and the contact between the upper surface of the tongue and the bottom surface of the upper lip on the other hand is preferably at least 0.7mm.

The panel according to the seventh aspect of the invention provides a very realistic reproduction of the grout part by means of the recess. Since the distal portion at least partially overlaps the recess in the coupled state of the panel, the grout dummy appears as a continuous grout, and no connection lines are visible prior to mounting the panel, as are other grout dummy already present in the panel. The panel according to the seventh aspect of the invention may be easily coupled for floating mounting of the panel.

Optionally, the panel of the seventh aspect of the invention is a panel according to any one of the non-contradictory embodiments of any one of the first, second, third, fourth, fifth or sixth aspects of the invention.

Optionally, a gap is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

In a preferred embodiment of the seventh aspect of the invention, the distal portion comprises a bevel. The ramp may be a rounded ramp, convex or concave. The chamfer may comprise a convex or concave circular cross-section. A benefit of this embodiment is that an even more realistic copy of the grout is provided for the installed panel.

In a preferred embodiment of the seventh aspect of the invention, the male edge comprises a bevel proximal to the recess. The ramp may be a convex or concave rounded ramp. The chamfer may comprise a circular cross-section, convex or concave. A benefit of this embodiment is that a more realistic copy of the grout is provided to the installed panel.

In a preferred embodiment of the seventh aspect of the invention, the recess is provided with a varnish layer. In embodiments in which the distal portion comprises a bevel, this bevel is preferably at least partially provided with a varnish layer, such that in a state in which two such panels are coupled at their first pair of opposite edges, the varnish layer of the recess visually continues into the varnish layer of the bevel of the distal portion. In embodiments in which the male edge comprises a bevel proximal to the recess, the varnish layer of the recess preferably extends at least partially onto said bevel. This embodiment provides an even more realistic imitation of the grout. The varnish layer may be coloured to provide a grouted section replica of any colour, so that an even more realistic grouted section replica is obtained.

In embodiments wherein a varnish layer is provided, preferably the varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm. This embodiment provides a grout section replica that exhibits a certain roughness as provided by a true grout.

In embodiments where a varnish layer is provided, it is preferred that the varnish layer is less than 200 μm thick, more preferably less than 100 μm thick, even more preferably less than 60 μm thick.

In a preferred embodiment of the seventh aspect of the invention, the recess has a width of at least 2mm, more preferably at least 2.3 mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the seventh aspect of the invention, the recess has a visible width in the coupling panel of at least 1.5mm, more preferably at least 2mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the seventh aspect of the invention, the distal edge of the distal portion extends beyond a horizontal distance of at least 0.25mm, preferably at least 0.7mm, from the concave edge. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the seventh aspect of the invention, the recess extends into the substrate. This embodiment allows to provide an improved panel. The color of the grout section replica may be provided by the substrate or by a varnish applied thereto. The depth of the recess may be selected such that it mimics a grout portion of a covering having tiles.

In a preferred embodiment of the seventh aspect of the invention, in the coupled state of the concave edge and the convex edge of another such panel, a gap is provided which extends horizontally between the convex edge and the concave edge and vertically between the distal portion of the tongue and the upper surface. Preferably, a gap is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

In a preferred embodiment of the seventh aspect of the invention, in the coupled state of the concave edge and the convex edge of another such panel, the distal end of the upper lip below the distal portion contacts the convex edge of another such panel at least over a portion of the surface of the distal end of the upper lip below said distal portion; preferably, such contact of the distal end of the upper lip below the distal portion is provided at a section of this distal end of the upper lip substantially perpendicular to the panel surface. Such an embodiment is advantageous in that gaps at corners of a panel of a covering comprising a plurality of such panels are better prevented.

In a more preferred embodiment, contact is made between the distal end of the upper lip below the distal portion and a lip protruding from the convex edge of another such panel. More preferably, the male edge and the female edge are configured such that when two such panels are coupled, the protruding lip overlaps the female edge by at least 0.05mm, preferably at least 0.10mm, in a direction parallel to the panel surface and perpendicular to the coupling edge, such that in the coupled state the protruding lip contacts the female edge in a pretensioned manner. This means that the protruding lip will contact the concave edge, whereas the protruding lip will be slightly convex and/or curved. This ensures a better contact between the protruding lip and the concave edge. This ensures a better prevention of gaps between the edges of the panels, resulting in a more realistic reproduction of the grout through the recess in the covering (e.g. floor covering) comprising such panels. If another benefit of such an embodiment is that, particularly for panels with edges of the shortest length that are quite long (e.g., longer than 300 mm) and/or square panels (whether large or not), deviations from squareness due to manufacturing tolerances can be compensated for; a good visual coverage is ensured by realistic grouter imitation.

In a preferred embodiment of the seventh aspect of the invention, the substrate comprises a first layer and a second layer, wherein the second layer is arranged closer to the surface of the panel than the first layer. The composition of the first layer is different from the composition of the second layer. The tongue is disposed in the first layer. The second layer is preferably made of a softer material than the first layer. Such an embodiment allows to provide a more realistic imitation of the grout, for example by adapting the colour of the layer into which the recess extends (for example by extrusion) when producing this layer. The tongue provided in the more rigid second layer results in a firm coupling between the panel edges.

In embodiments in which a lip protruding from the male edge is provided, a lip protruding from the male edge is preferably provided in the second layer. This embodiment is particularly advantageous when the second layer is made of a softer material than the first layer, as it allows to better prevent the occurrence of gaps at the coupling edges by pretensioning. Since the second layer is softer, the protruding lip will contact the concave edge and bulge or bend by pretension caused by the overlapping contour of the convex and concave edges of the panel.

Preferably, the first and/or second layer comprises a thermoplastic material, such as polyvinyl chloride, and a filler, optionally comprising an inorganic filler, such as chalk or lime.

In a preferred embodiment of the seventh aspect of the invention, the recess extends into the second layer, but preferably does not extend into the first layer. This embodiment allows to provide a more realistic imitation of the grout, for example by adapting the colour of the second layer when producing this second layer.

In a preferred embodiment of the seventh aspect of the invention, the recess extends into the substrate and the proximal boundary of the recess extends substantially perpendicularly through the decorative layer. The benefit of this embodiment is that in a covering with such a panel, the cut through the decor layer is hardly visible, since the exposed side edges are minimal and largely hidden from view.

Preferably, the proximal boundary of the recess extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm. In this way, even in the event of tool wear or production tolerances, the cut through the decor is hardly visible; and good grout imitations are obtained in a covering comprising such a panel.

In a preferred embodiment of the seventh aspect of the invention, the bottom surface of the distal portion is provided in the base and the distal boundary of the distal portion extends substantially perpendicularly through the decorative layer. The benefit of this embodiment is that in a covering with such a panel, the cut through the decor layer is hardly visible, since the exposed side edges are minimal and largely hidden from view.

Preferably, the distal boundary of the distal portion extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm. In this way, even in the event of tool wear or production tolerances, the cut through the decor is hardly visible; and good grout imitations are obtained in a covering comprising such a panel.

In a preferred embodiment of the seventh aspect of the invention, the depth of the recess relative to the panel surface is at least 0.4mm, more preferably at least 0.5mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the seventh aspect of the invention, the depth of the recess relative to the panel surface is less than 2mm, more preferably less than 1.5mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the seventh aspect of the invention, the panel is attachable to another such panel at a first pair of opposed edges thereof, the male edge of the panel being attachable to the female edge of the other such panel by tongue movement of the panel into the groove of the other such panel; and/or is displaced into the groove of another such panel by the tongue of the panel under the snap action.

In a preferred embodiment of the seventh aspect of the invention, in a state in which two such panels are coupled at their first pair of opposite edges, the minimum distance at the concave edge proximal to the distal boundary perpendicular to the distal portion of the panel surface between the lower lip and tongue is at least 0.1mm; more preferably at least 0.2mm, and even more preferably a maximum of 0.3mm. This embodiment is advantageous because possible production tolerances, in particular milling tolerances of the coupling parts, will not lead to difficulties in mounting the panels.

In a preferred embodiment of the seventh aspect of the invention, the panel comprises a second pair of opposite edges, wherein the second pair of opposite edges is configured as described for the first pair of opposite edges in any embodiment of the seventh aspect of the invention.

An eighth aspect of the invention relates to a panel. The panel includes a base and a top layer. The top layer includes a decorative layer and a wear layer. The decorative layer preferably comprises a printed film. The panels are provided with a coupling at a first pair of opposite edges, which coupling substantially co-operates with each other in the form of a male coupling and a female coupling, for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering. The male coupling portion is disposed at the male edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The female coupling is disposed at the female edges of the first pair of opposing edges. The male coupling portion includes a tongue. The female coupling includes a groove defined by an upper lip and a lower lip, wherein the lower lip extends farther than the upper lip. The lower lip includes a locking element. The bottom of the tongue comprises a locking element, wherein in a state in which two such panels are coupled at their first pair of opposite edges, the locking element of the lower lip contacts the locking element of the tongue, thereby establishing a locking of the coupling panel at the first pair of opposite edges of the coupling panel in a direction perpendicular to the coupling edges and parallel to the surfaces of the coupling panels. This locking is preferably established by pretensioning. The panel may have its male edge coupled to the female edge of another such panel by the tongue of the panel moving obliquely into the groove of the other such panel. The lower lip comprises a protrusion on its upper side, wherein the highest point of the protrusion is arranged proximally of the locking element and distally of the most distant point of the upper lip. The lower lip includes a recessed section at its upper surface, wherein the recessed section is recessed from a position more proximal than the most distal point of the upper lip to a position more outboard than the most distal point of the upper lip. The recessed section is disposed proximal to the highest point of the protrusion. The recessed section is sufficiently large and configured such that when the male edge of the panel is coupled by said diagonal movement, the distal end of the tongue can enter the recessed section and then emerge from the recessed section.

A benefit of the panels according to the eighth aspect of the invention is that the recessed section provides for the tongue to enter the groove when the panels are coupled by the oblique movement of the tongue of a first such panel towards the groove of a second such panel. This facilitates the installation of the panel.

Optionally, the panel of the eighth aspect of the invention is a panel according to any non-contradictory embodiment of any of the first, second, third, fourth, fifth, sixth or seventh aspects of the invention.

The panel provided according to any embodiment of the seventh aspect of the invention and any embodiment of the eighth aspect of the invention is very advantageous in that the features of the eighth aspect facilitate the coupling operation of the panel according to the seventh aspect of the invention in that the recessed section allows the tongue to be inserted into the groove in such a way that the risk of damaging the distal portion of the overlapping lips during coupling is minimized.

In a preferred embodiment of the eighth aspect of the invention, the recessed section comprises a distal side having an angle of at least 10 °, preferably at least 15 °, and preferably less than 25 ° with the bottom of the panel over at least 50% of the distal side. This embodiment is preferred because the tongue can slide along this distal side during the tilting movement. In this way, the tongue is guided and guided to the correct coupling position.

In a preferred embodiment of the eighth aspect of the invention, the recessed section comprises a distal side having an angle of at least 10 ° with the bottom of the panel, preferably at least 15 °, and preferably less than 25 °, wherein said distal side extends distally from proximal to the most distal end of the upper lip. This embodiment is preferred because the tongue can slide along the distal side during the oblique movement. In this way, the tongue is guided and guided to the correct coupling position.

A ninth aspect of the invention relates to a panel comprising a substrate and a top layer. The layer includes a decorative layer and a wear layer. Preferably, the decorative layer comprises a printed film. The panels are provided with a coupling at a first pair of opposite edges, which coupling substantially co-operates with each other in the form of a male coupling and a female coupling, for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering. The male coupling portion is disposed at the male edges of the first pair of opposing edges. The coupling part is provided with mechanical locking means that prevent the two coupling panels from separating in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The female coupling is disposed at the female edges of the first pair of opposing edges. The male coupling portion includes a tongue. The female coupling includes a groove defined by an upper lip and a lower lip, wherein the lower lip extends farther than the upper lip. The lower lip includes a locking element. The bottom of the tongue comprises a locking element. In a state in which two such panels are coupled at their first pair of opposite edges, the locking elements of the lower lip contact the locking elements of the tongue, thereby establishing a locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel; preferably, this locking is established by pretensioning. The panel can move obliquely into the groove of another panel by the tongue of the panel; and/or coupled with its male edge to the female edge of another such panel by snap-action displacement of the male edge parallel to the panel surface.

The locking element of the lower lip comprises a first contact surface, wherein the first contact surface is arranged proximally of the locking element, and wherein the first contact surface has an angle with the bottom of the panel of between 20 ° and 35 °, preferably between 23 ° and 30 °.

The lower lip comprises an inclined surface, wherein the inclined surface is inclined upwards from the bottom of the panel in the proximal direction of the panel, wherein the inclined surface comprises a second contact surface; wherein the second contact surface has an angle with the bottom of the panel of between 20 ° and 35 °, preferably between 23 ° and 30 °.

The bottom of the tongue comprises a third contact surface, wherein the third contact surface has an angle with the bottom of the panel of between 20 ° and 35 °, preferably between 23 ° and 30 °.

The bottom of the tongue comprises a fourth contact surface, wherein the third contact surface has an angle with the bottom of the panel of between 20 ° and 35 °, preferably between 23 ° and 30 °.

The first contact surface is for contacting a third contact surface of another such panel in a coupled state of the concave edge with the convex edge of the other such panel. The second contact surface is for contacting a fourth contact surface of another such panel in a coupled state of the concave edge with the convex edge of the other such panel.

The panel according to the ninth aspect of the invention allows to be able to accommodate the shrinkage or expansion of the panel due to temperature or humidity variations. When the panel wants to contract or expand, the inclined contact surface on the one hand establishes contact between the first contact surface and the third contact surface; or on the other hand a force counteracting the contraction or expansion of the panel will be applied between the second contact surface and the fourth contact surface. These forces may involve elastic bending of the lower lip. When these forces are above a certain level, the tongue will slide along the contact surface over the lower lip; this may involve elastic bending of the lower lip. When a gap is provided between the distal end of the male edge and the edge of the female edge, and a gap is provided between the distal end of the lower lip and the edge of the male edge; this expansion can be absorbed by the sliding movement of the coupling panels relative to each other.

Optionally, the panel of the ninth aspect of the invention is a panel according to any non-contradictory embodiment of any of the first, second, third, fourth, fifth, sixth, seventh or eighth aspects of the invention.

The ninth aspect of the present invention may be combined with the seventh aspect of the present invention. The seventh aspect of the invention is combined with the ninth aspect of the invention in that the floatingly mounted panel is expandable and contractible when temperature and/or humidity changes while maintaining a realistic grout part replica.

In a preferred embodiment of the ninth aspect of the invention, in the coupled state of the male edge of a panel with the female edge of another such panel, a gap is provided in the horizontal direction between the distal end of the male edge of the other such panel and the edge of the female edge, such that expansion of the male edge of the other such panel towards the female edge can be accommodated. Such an embodiment may preferably be combined with any of the embodiments of the eighth aspect of the invention.

In a preferred embodiment of the ninth aspect of the invention, in the coupled state of the male edge of a panel with the female edge of another such panel, a gap is provided in the horizontal direction between the distal end of the female edge of the other such panel and the edge of the male edge of the panel, such that expansion of the female edge of the other such panel towards the male edge of the panel can be accommodated. Such an embodiment may preferably be combined with any of the embodiments of the eighth aspect of the invention.

In a preferred embodiment of the ninth aspect of the invention, the third contact surface and the fourth contact surface are provided on opposite sides of a locking element protruding downwards from the tongue. Such an embodiment may preferably be combined with any of the embodiments of the eighth aspect of the invention.

In a preferred embodiment of any of the embodiments of the seventh, eighth and ninth aspects of the invention, the panel comprises a second pair of opposite edges, wherein the second pair of opposite edges is provided with a coupling portion, which substantially co-operates with each other in the form of a male coupling portion and a female coupling portion, for coupling two such panels at the second pair of opposite edges thereof in a floor, wall or ceiling covering. The coupling parts of the second pair of opposite edges are provided with mechanical locking means preventing the two coupling panels from being separated in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels, preferably wherein in a state in which two such panels are coupled at their second pair of opposite edges, grout part imitation is provided at these coupling edges. Preferably, the panel is rectangular, oblong or square.

A tenth aspect of the invention relates to a panel comprising a substrate and a top layer. The top layer includes a decorative layer and a wear layer. The decorative layer preferably comprises a printed film. The panel includes a second pair of opposing edges. The panels are provided with a second coupling part at a second pair of opposite edges, which substantially co-operates with each other in the form of a second male coupling part and a second female coupling part for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion is disposed at a second male edge of the second pair of opposing edges. The second female coupling is disposed at a second female edge of the panel. The second coupling portion is provided with second mechanical locking means preventing the separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The second convex edge includes a downwardly directed upwardly hooked portion; wherein the downwardly directed upward hook comprises and preferably consists of a lip with a downwardly directed locking element, which lip forms the second male coupling part. The second concave edge includes an upwardly directed downward hook; wherein the upwardly directed lower hook comprises and preferably consists of a lip with an upwardly directed locking element, which lip defines a second female coupling in the form of a coupling recess on its proximal side. The second male coupling portion and the second female coupling portion are configured such that two such panels may be coupled to each other at their respective second pair of opposing edges by movement substantially perpendicular to the surfaces of the two such coupled panels. The surface of the second concave edge is provided with a recess, preferably wherein the recess comprises at least one section parallel to the panel surface. The downwardly directed upper hook includes a distal portion extending from the second convex edge. The bottom surface of the distal portion is preferably disposed in the base. In the coupled state of the second concave edge with the second convex edge of another such panel, a distal portion extending from the second convex edge at least partially overlaps with a recess at a surface of the second concave edge. Preferably, this overlap is provided with a contact between the bottom of the distal portion and the recess, more preferably wherein this contact is provided with a pretension, or preferably a gap is provided from the overlap between the bottom of the distal portion and the bottom of the recess, more preferably wherein the gap between the bottom of the distal portion and the recess is at least 0.1mm, preferably less than 0.3mm, more preferably at most 0.2mm.

The panel according to the tenth aspect of the invention provides a very realistic reproduction of the grout part by means of the recess. Since the distal portion at least partially overlaps the recess in the coupled state of the panel, the grout dummy appears as a kind of continuous grout, and no connection lines are visible prior to mounting the panel, as are other grout dummy already present in the panel. The panel according to the tenth aspect of the invention may be easily coupled for floating mounting of the panel. When combined with appropriate execution of the coupling at the first pair of opposite edges of the panel, the panel may be mounted into the covering by a fold-down method, for example as described in any of the embodiments of the seventh, eighth or ninth aspects of the invention. The combination of embodiments of the seventh aspect of the invention with embodiments of the tenth aspect of the invention is particularly interesting because a very good imitation of the grout is obtained in the covering mounted with these panels around the entire circumference of the panels.

Optionally, the panel of the tenth aspect of the invention is a panel according to any one of the non-contradictory embodiments of any one of the first, second, third, fourth, fifth, sixth, seventh, eighth or ninth aspects of the invention.

In a preferred embodiment of the tenth aspect of the invention, the distal portion extending from the second convex edge comprises a chamfer. The ramp may be a convex or concave rounded ramp. The chamfer may comprise a convex or concave circular cross-section. A benefit of this embodiment is that a more realistic copy of the grout is provided to the installed panel.

In a preferred embodiment of the tenth aspect of the invention, the second concave edge comprises a bevel proximal to the concave portion. The ramp may be a convex or concave rounded ramp. The chamfer may comprise a convex or concave circular cross-section. A benefit of this embodiment is that a more realistic copy of the grout is provided to the installed panel.

In a preferred embodiment of the tenth aspect of the invention, the recess at the surface of the second concave edge is provided with a varnish layer. Preferably, when the distal portion extending from the second convex edge comprises a bevel, this bevel is at least partially provided with a varnish layer, such that in the state in which two such panels are coupled at their second pair of opposite edges, the varnish layer of the recess visually continues into the varnish layer of the bevel of the distal portion; and/or preferably, when the second concave edge comprises a bevel proximal to the recess, the varnish layer of the recess extends at least partially onto said bevel. This embodiment provides an even more realistic imitation of the grout. The varnish layer may be coloured to provide a grouted section replica of any colour, so that an even more realistic grouted section replica is obtained.

In a preferred embodiment of the tenth aspect of the invention, wherein a varnish layer is provided, the varnish layer comprising sand and/or particles preferably having a particle size of more than 20 μm. This embodiment provides a grout section replica that exhibits a certain roughness as provided by a true grout slurry.

In a preferred embodiment of the tenth aspect of the invention, wherein a varnish layer is provided, the varnish layer is less than 200 μm thick, more preferably less than 100 μm thick, even more preferably less than 60 μm thick.

In a preferred embodiment of the tenth aspect of the invention, the recess at the surface of the second concave edge has a width of at least 2mm, preferably at least 2.3mm, and/or wherein the recess at the surface of the second concave edge has a visible width in the coupling panel of at least 1.5mm, more preferably at least 2mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the tenth aspect of the invention, the distal edge of the distal portion extending from the second convex edge extends in the horizontal direction from the second convex edge a distance of at least 0.25mm, preferably at least 0.7mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the tenth aspect of the invention, the recess at the surface of the second concave edge extends into the base. This embodiment allows to provide an improved panel. The color of the grout section replica may be provided by the substrate or by a varnish applied thereto. The depth of the recess may be selected such that it mimics a grout portion of a covering having tiles.

In a preferred embodiment of the tenth aspect of the invention, the substrate comprises a first layer and a second layer, wherein the second layer is arranged closer to the surface of the panel than the first layer, wherein the composition of the first layer is different from the composition of the second layer. More preferably, the second layer is made of a softer material than the first layer.

In a preferred embodiment of the tenth aspect of the invention, the recess at the surface of the second concave edge extends into the second layer, but more preferably does not extend into the first layer. This embodiment allows to provide a more realistic imitation of the grout, for example by adapting the colour of the second layer when producing this second layer.

In a preferred embodiment of the tenth aspect of the invention, the recess at the surface of the second concave edge extends into the substrate and the proximal boundary of the recess on the surface of the second concave edge extends substantially perpendicularly through the decorative layer. More preferably, the proximal boundary of the recess at the surface of the second concave edge extends substantially perpendicularly through the panel over a distance of less than the thickness of the decorative layer plus 0.15 mm; and preferably over a distance of less than 0.25 mm. In this way, even when tool wear or production tolerances occur, the cut through the decor is hardly visible; and good grout imitations are obtained in a covering comprising such a panel.

In a preferred embodiment of the tenth aspect of the invention, the bottom surface of the distal portion extending from the second convex edge is provided in the base. The benefit of this embodiment is that in a covering with such a panel, the cut through the decor layer is hardly visible, since the exposed side edges are minimal and largely hidden from view.

Preferably, the distal boundary of the distal portion extending from the second convex edge extends substantially perpendicularly through the decorative layer. More preferably, the distal boundary of the distal portion extending from the second convex edge extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; and more preferably over a distance of less than 0.25 mm. In this way, even when tool wear or production tolerances occur, the cut through the decor is hardly visible; and good grout imitations are obtained in a covering comprising such a panel.

In a preferred embodiment of the tenth aspect of the invention, the depth of the recess at the surface of the second concave edge relative to the panel surface is at least 0.4mm, more preferably at least 0.5mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the tenth aspect of the invention, the depth of the recess at the surface of the second concave edge relative to the panel surface is less than 2mm, more preferably less than 1.5mm. This embodiment provides an even more realistic imitation of the grout.

In a preferred embodiment of the tenth aspect of the invention, the second locking means comprises an undercut at the second concave edge. The undercut is for interaction with a downwardly directed locking element of another such panel, preferably with a locking element at the distal end of the downwardly directed locking element of another such panel, for establishing a lock perpendicular to the panel surface at the distal end of the downwardly directed locking element of the other such panel.

In a preferred embodiment of the tenth aspect of the invention, the second pair of opposing edges is configured such that no locking is established at the second pair of opposing edges between the distal end of the second male edge and the proximal end of the second female edge in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the tenth aspect of the invention, the second pair of opposite edges are configured such that no locking is provided in a direction perpendicular to the surfaces of the panels coupled at their second pair of opposite edges, both at the proximal end directed upwards towards the locking element and at the proximal end directed downwards towards the locking element.

In a preferred embodiment of the tenth aspect of the invention, the proximal end of the downwardly directed locking element comprises a first inclined contact surface. The proximal end of the upwardly directed locking element comprises a second inclined contact surface. In a state in which two such panels are coupled at their second pair of opposing edges, a first inclined contact surface of a first such panel contacts or is adjacent to a second inclined contact surface of a third such panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel. Preferably, this locking is established by pretensioning.

In a preferred embodiment of the tenth aspect of the invention, the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking is provided at the distal end directed upwards towards the locking element in a direction perpendicular to the surface of the coupled panels. The slave lock may be provided with or without contact.

More preferably, the distal end directed upwards towards the locking element comprises an undercut or a protrusion, wherein a bottom surface of the undercut or protrusion is provided for establishing the locking in a direction perpendicular to the surface of the coupled panel.

In a preferred embodiment of the tenth aspect of the invention, the upwardly directed locking element contacts the proximal end of the panel edge, which is coupled to the proximal end at the distal end of the upwardly directed locking element; and/or the distal end of the upwardly directed locking element comprises an undercut and the upwardly directed locking element contacts the proximal end of the edge of the panel, which is coupled to the proximal end at the undercut of the upwardly directed locking element; thereby establishing a lock in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the tenth aspect of the invention, the proximal end of the second male edge comprises a corresponding hook, wherein the corresponding hook is arranged for interaction with an upwardly directed locking element of the coupling panel for establishing a lock in a direction perpendicular to the surface of the coupling panel.

In a preferred embodiment of the tenth aspect of the invention, the coupling portions of the first pair of opposed edges and the second coupling portions of the second pair of opposed edges are configured such that a plurality of such panels can be coupled into the covering using a folded-down mounting method.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the decorative layer is a printed decorative layer, preferably a polymer film comprising a printed image, such as a polyvinyl chloride film. More preferably, the printed decorative layer comprises or consists of a printed polyvinyl chloride film less than 0.1mm thick. The printed decorative layer may be, for example, 0.055mm thick. This embodiment allows providing natural stone or tile imitation.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the wear layer comprises and preferably consists of a transparent polymer film, preferably a transparent polyvinyl chloride film. This embodiment provides the panel with good wear properties.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the wear layer comprises a transparent varnish layer, such as an acrylic varnish layer or a urethane acrylic varnish layer, more preferably a UV cured acrylic varnish layer or a UV cured urethane acrylic varnish layer. This embodiment provides the panel with good wear properties.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention, the panel comprises an embossed surface. This embodiment allows to provide an even more realistic imitation of natural stone or tile.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the substrate comprises and preferably consists of at least one polymeric substrate layer comprising a filler. More preferably, the polymeric substrate layer is a thermoplastic polymer layer, more preferably a polyvinyl chloride polymer layer.

When a filler is used, preferably the filler comprises or consists of a mineral filler, for example one or more selected from chalk, lime or stone; or the filler comprises wood or cellulose particles or fibres.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention, the substrate comprises a mineral binder, optionally selected from gypsum, magnesia, sorel or portland cement. The substrate comprises a filler, which is optionally selected from wood chips, wood fibers or wood particles. In a preferred such embodiment, the decorative layer comprises a sheet of printing paper, more preferably wherein the sheet of printing paper is impregnated with melamine resin. In a preferred embodiment, the wear layer comprises one or more paper layers impregnated with a polymer, more preferably wherein the paper layers are impregnated with melamine resin.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the substrate comprises a Medium Density Fiberboard (MDF) panel or a high density optical fiber board (HDF) panel. Optionally, one or more or all of the panel edges comprise a chamfer, preferably the chamfer is a pressed chamfer. In a preferred such embodiment, the decorative layer comprises a sheet of printing paper, more preferably wherein the sheet of printing paper is impregnated with melamine resin. In a preferred embodiment, the wear layer comprises one or more paper layers impregnated with a polymer, more preferably wherein the paper layers are impregnated with melamine resin.

The embodiment wherein the chamfer is a pressed chamfer is preferred because the decorative layer follows the shape of the chamfer edge, which in combination with the grout analog of the various aspects of the invention, helps to achieve a very realistic grout analog.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the back side of the panel comprises a base layer, more preferably a buffer base layer. Such an embodiment allows to provide a panel with improved acoustic effect. For example, the noise generated when walking on such floor panels is small.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention, the panel thickness is between 3.2mm and 7 mm; more preferably, the panel thickness is less than 4.5mm.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the present invention, the decorative layer provides a stone or tile imitation. This embodiment allows to provide a panel which is a realistic copy of a stone or tile.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention, the panel is rectangular, rectangular or square. Preferably, the shortest panel edge is at least 300mm long.

In a preferred embodiment of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention, the panel is square and the sides of the panel are greater than 300mm in length, more preferably greater than 400mm, even more preferably greater than 500mm. This embodiment allows to provide large square panels mimicking natural stone or tile; and optionally with mechanical locking means for floating mounting of the panels, for example as a floor covering, while exhibiting realistic grout part simulations.

An eleventh aspect of the invention is a package of panels comprising a plurality of panels as described in any of the embodiments of any of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth or tenth aspects of the invention. The panels are stacked on top of each other; and the package includes a housing surrounding the stacked panels.

Another aspect of the invention is a covering, such as a floor covering, wall covering or ceiling covering, comprising a panel as described in any embodiment of any aspect of the invention.

Drawings

Fig. 1 shows an example of a panel according to a first aspect of the invention.

Fig. 2 shows a section through II-II of the panel according to fig. 1.

Fig. 3 shows two panels as shown in fig. 1 coupled at a first pair of opposing edges.

Fig. 4 shows a section of IV-IV of the panel according to fig. 1.

Fig. 5 shows two panels as shown in fig. 1 coupled at a second pair of opposing edges.

Fig. 6 shows another embodiment of the first aspect of the invention in the same view as fig. 5.

Fig. 7 shows an embodiment of the first aspect of the invention, wherein a central recess is provided.

Fig. 8 shows another embodiment of the first aspect of the invention in the same view as fig. 2.

Fig. 9 shows another embodiment of the first aspect of the invention in the same view as fig. 4.

Fig. 10 illustrates a fold-down panel installation method.

Fig. 11 shows an example of a panel according to the second aspect of the invention.

Fig. 12 shows two panels as shown in fig. 11 in an installed state.

Fig. 13 shows an embodiment of a panel according to a third aspect of the invention.

Fig. 14 shows a cross section of XIV-XIV of the panel according to fig. 13.

Fig. 15 shows two panels as shown in fig. 13 coupled at a first pair of opposite edges thereof.

Fig. 16 shows a section of XVI-XVI of the panel according to fig. 13.

Fig. 17 shows two panels as shown in fig. 13 coupled at their second pair of opposite edges.

Fig. 18 shows another embodiment of the third aspect of the invention in the same view as fig. 17.

Fig. 19 shows an embodiment of the third aspect of the invention, wherein a central recess is provided.

Fig. 20 shows another embodiment of the first aspect of the invention in the same view as fig. 14.

Fig. 21 shows another embodiment of the first aspect of the invention in the same view as fig. 16.

Fig. 22 shows a panel according to an embodiment of the fourth aspect of the invention.

Fig. 23 shows the two panels as shown in fig. 22 in an installed state.

Fig. 24 shows a cross section of a panel according to an embodiment of the fifth aspect of the invention.

Fig. 25 shows the two panels as shown in fig. 24 in a coupled state.

Fig. 26 shows a cross section at a second pair of opposite edges of a panel according to an embodiment of the fifth aspect of the invention.

Fig. 27 shows the two panels as shown in fig. 26 in a coupled state.

Fig. 28 shows a cross section of a panel according to an embodiment of the fifth aspect of the invention.

Fig. 29 shows the two panels as shown in fig. 28 in a coupled state.

Fig. 30 shows a cross section of a panel according to an embodiment of the fifth aspect of the invention.

Fig. 31 and 32 show two panels as shown in fig. 30 in a coupled state.

Fig. 33 shows a panel in a coupled state according to an embodiment of the fifth aspect of the present invention.

Fig. 34 shows a first pair of opposed edges of a panel according to an embodiment of the sixth aspect of the invention.

Fig. 35 shows two panels as shown in fig. 34 coupled at a first pair of opposite edges thereof.

Fig. 36 shows panels according to an embodiment of the sixth aspect, which are coupled at their second pair of opposite edges.

Fig. 37 shows a panel according to another embodiment of the sixth aspect, coupled at a second pair of opposite edges thereof.

Fig. 38 shows a panel according to another embodiment of the sixth aspect, which are coupled at their second pair of opposite edges.

Fig. 39 shows an example of a panel according to the seventh, eighth and ninth aspects of the present invention.

Fig. 40 shows the two panels as shown in fig. 39 in a coupled condition at a first pair of opposing edges thereof.

Fig. 41 shows another example of a panel according to the seventh, eighth and ninth aspects of the invention, in a coupled state at a first pair of opposite edges thereof.

Fig. 42 and 43 show examples of panels according to the seventh, eighth and ninth aspects of the invention.

Fig. 44 shows a first pair of opposite edges of a panel according to at least a seventh aspect of the invention.

Fig. 45 shows two panels according to fig. 44 coupled to each other at a first pair of opposite edges thereof.

Fig. 46 shows a first pair of opposite edges of a panel according to at least a seventh aspect of the invention.

Fig. 47 shows two panels according to fig. 46 coupled to each other at a first pair of opposite edges thereof.

Fig. 48 shows an embodiment of a panel according to at least a seventh aspect of the invention, coupled at a first pair of opposite edges thereof.

Fig. 49 shows a panel according to a tenth aspect of the invention.

Fig. 50 shows the two panels of fig. 49 in a coupled condition at their second pair of opposing edges.

Fig. 51 and 52 show an embodiment of the tenth aspect of the present invention in the same view as fig. 50.

Fig. 53 shows an embodiment of the tenth aspect of the invention in the same view as fig. 50.

Modes for carrying out the invention

Fig. 1 to 9 illustrate a first aspect of the present invention. Fig. 1 shows an example of a panel according to a first aspect of the invention. The panel 1 is rectangular and oblong. The panel 1 comprises a first pair of opposite edges 3, 4 and a second pair of opposite edges 5, 6. The male edge 3 comprises a recess 30. The second male edge 5 comprises a second recess 36. The central recess 33 is arranged parallel to and in the middle of the first pair of opposite edges 3, 4. The second central recess is arranged parallel to and in the middle of the second pair of opposite edges 5, 6. The recess 30, the second recess 36, the central recess 33 and the second central recess 37 are provided with a varnish layer 31, which varnish layer 31 will imitate a grout part in the mounted state of a plurality of such panels. The recess 30, the second recess 36, the central recess 33 and the second central recess 37 each have the same width in this example; and the varnish layer 31 thereof has the same composition.

The panel edge provided with the recess 30 is connected with the panel edge provided with the second recess 33 in the joint 38. In this joint, the varnish layer 31 of the recess 30 continues without interruption to the varnish layer of the second recess 36.

Fig. 2 shows a section of a panel II-II according to fig. 1. Fig. 3 shows two panels as shown in fig. 1 coupled at a first pair of opposite edges thereof. The panel 1 comprises a substrate 10 and a top layer 11. The top layer 11 comprises a decorative layer 20 and a wear layer 21. The panels are provided at the first pair of opposite edges 3, 4 with coupling parts 7, 8 which substantially cooperate with each other in the form of male coupling parts 7 and female coupling parts 8 for coupling two such panels to each other at their first pair of opposite edges 3, 4 in a floor, wall or ceiling covering. The male coupling 7 is provided at the male edge 3 of the first pair of opposite edges. The female coupling 8 is provided at the female edges 4 of the first pair of opposite edges.

The male coupling 7 provided at the male edge 3 comprises a tongue 53 extending in a direction parallel to the panel surface. The female edge 4 comprises a groove 54 providing the female coupling 8. The recess is delimited by an upper lip 55 and a lower lip 56. The lower lip extends farther than the upper lip. The lower lip 56 comprises the locking element 13. The bottom of the tongue 53 comprises the locking element 14. In the condition in which two such panels 1 are coupled at their first pair of opposite edges 3, 4, the locking elements of the lower lip 13 contact the locking elements of the tongue 14, thereby establishing a locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel. This is preferred when the slave lock is established by pretensioning. The locking element 13 of the lower lip 13 is disposed distally of the distal end of the upper lip 55.

The coupling of the first pair of opposite edges 3, 4 is configured such that a first such panel can couple its male edge into the female edge of a second such panel with a snap action by a diagonal movement and by a substantially horizontal sliding movement.

The concave edge 4 comprises a first closing plane 61 and the convex edge 3 comprises a second closing plane 62. In a state in which two such panels are coupled at a first pair of opposite edges thereof, a first closure plane of a first such panel contacts a second closure plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to a surface of the coupled panel.

The surface of the male edge 3 is provided with a recess 30. The recess 30 extends deeper into the panel than the decorative layer 20. The recess is provided with a varnish layer 31; to simulate a grout portion in a panel installation state. In the embodiment shown, a portion of the side edges 34 of the recess 30 are provided with a varnish layer 30. This conceals the decorative layer 20 from view at the convex edge.

In the example shown, the recess 30 extends in a proximal direction, in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges 3, 4, to at least vertically above the locking element 14 of the lower lip 56, which in the coupled state of two such panels at their first pair of opposite edges 3, 4 will contact the locking element 13 of the tongue 53.

The concave edges 4 of the first pair of opposite edges 3, 4 are located above the segment provided with the varnish layer 31. The varnish layer on this concave edge conceals the decorative layer 20 from view at the concave edge 4. In this way, the varnish layer at the side edges 34 of the recess and at the concave edge 4 helps to achieve a more realistic grout simulation of the joining panel. Preferably, each of the mentioned varnish layers has the same composition.

Optionally, one or all mentioned varnish layers 31 comprise sand and/or particles preferably having a particle size of more than 20 μm.

The configuration for the first pair of opposite edges of the panel 1 as shown in fig. 2 may also be provided at the second pair of opposite edges.

Fig. 4 shows a section of a panel IV-IV according to fig. 1. Fig. 5 shows two panels as shown in fig. 1, which are coupled at their second pair of opposite edges 5, 6. The panel 1 comprises a second pair of opposite edges 5, 6. The panels are provided at the second pair of opposite edges with second coupling parts 27, 28 which substantially cooperate with each other in the form of a second male coupling part 27 and a second female coupling part 28 for coupling two such panels to each other at their second pair of opposite edges 5, 6 in a floor, wall or ceiling covering. The second male coupling portion 27 is provided at the second male edge 5 of the second pair of opposite edges. The second female coupling 28 is provided at the second female edge 6 of the panel. The second coupling portion is provided with second mechanical locking means preventing the separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels.

The second male edge 5 includes a second downwardly directed upper hook portion 64. The second downwardly directed upwardly hook 64 includes a lip 65 having a second downwardly directed locking element 66 forming the second male coupling portion 27.

The second concave edge 6 comprises a second upwardly directed downward hook 67. The second upwardly directed downward hook 67 comprises a lip 68 having a second upwardly directed locking element 69 defining a second female coupling 28 in the form of a second coupling recess 72 proximally thereof. The second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposing edges by a movement M substantially perpendicular to the surfaces of the panels to be coupled in this way.

The edges of the second pair of opposite edges 5, 6 are provided with mechanical locking means such that in a state in which a first such panel is coupled with another such panel at its second pair of opposite edges, a locking perpendicular to the panel surface is provided at the distal end of the second downwardly directed locking element 66 of the panel. For this purpose, the locking means comprise a second undercut 73 at the second concave edge 6. The second undercut 73 is for interaction with a locking element 81 at the distal end of the second downwardly directed locking element 66 of the coupling panel, thereby establishing a lock perpendicular to the panel surface at the distal end of the second downwardly directed locking element of the panel.

The proximal end of the second downwardly directed locking element 66 comprises a third inclined contact surface 74. The proximal end of the second upwardly directed locking element 69 comprises a fourth inclined contact surface 75. In the condition in which two such panels are coupled at their second pair of opposite edges, the third inclined contact surface 74 of the first such panel contacts the fourth inclined contact surface 75 of the third such panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel. Preferably, this locking is established by pretensioning.

The second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, no locking is provided in a direction perpendicular to the surface of the coupled panels at the distal end directed upwards towards the locking element 69.

The second concave edge 6 comprises a first closing plane 61 and the second convex edge 5 comprises a second closing plane 62. In a state in which two such panels are coupled at their second pair of opposite edges, a first closure plane of a first such panel contacts a second closure plane of a second such panel, thereby providing a contact surface between the two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panel.

The surface of the second concave edge 6 is provided with a second concave portion 36. The second recess 36 extends to a position deeper in the panel than the decorative layer 20. The second recess 36 is provided with a varnish layer 31; to simulate a grout portion in a panel mounted state. In the embodiment shown, a portion of the side edge 34 of the second recess 36 is provided with a varnish layer 30. This conceals the decorative layer 20 from view at the concave edge 6.

The second convex edge 5 of the second pair of opposite edges 5, 6 is located above the segment provided with the varnish layer 31. The varnish layer on this convex edge conceals the decorative layer 20 from view at the convex edge 5. In this way, the varnish layer at the side edges 34 of the second recess and at the second convex edge 6 contributes to a more realistic grout simulation of the joining panel. Preferably, each of the mentioned varnish layers has the same composition. The same applies to the varnish layer applied at the first pair of opposite edges as to the varnish layer applied at the second pair of opposite edges.

The configuration shown in fig. 4 for the second pair of opposite edges of the panel 1 may also be provided at the first pair of opposite edges.

Fig. 6 shows another embodiment of the first aspect of the invention in the same view as fig. 5. The reference numerals in fig. 6 have the same meaning as in fig. 5. The difference between the panels of fig. 5 and 6 relates to the locking means being provided in a coupled state at the second pair of opposite edges 5, 6 for locking in a direction perpendicular to the panel surface.

In the embodiment shown in fig. 6, the edges of the second pair of panel edges are configured such that no locking is provided between the panels coupled at the second pair of opposite edges 5, either at the proximal end of the second upwardly directed locking element 69 or at the proximal end of the second downwardly directed locking element 66, in a direction perpendicular to the panel surfaces.

In the same way as in the embodiment of fig. 5, the locking means comprise a second undercut 73 at the second concave edge 6. The second undercut 73 is for interaction with a locking element 81 at the distal end of the second downwardly directed locking element 66 of the coupling panel, thereby establishing a lock perpendicular to the panel surface at the distal end of the second downwardly directed locking element of the panel.

In addition, the second pair of opposite edges 5, 6 of the embodiment shown in fig. 6 is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element 69. An embodiment may be provided in which the lock has a contact, and an embodiment may be provided in which the lock has no contact. In the embodiment shown in fig. 6, the distal end of the second upwardly directed locking element 69 comprises an undercut 76. The bottom surface of this undercut 76 serves to establish a lock in a direction perpendicular to the surface of the coupling panel. To this end, the proximal end of the second male edge 5 comprises a second corresponding hook 78 for interacting with an undercut 76 at the distal end of the second upwardly directed locking element 69 of the coupling panel to establish locking in a direction perpendicular to the surface of the coupling panel.

The configuration shown in fig. 6 for the second pair of opposite edges of the panel 1 may also be provided at the first pair of opposite edges.

Fig. 7 shows an embodiment of a panel according to the first aspect of the invention, wherein a central recess 33 is provided. The reference numerals have the same meaning as in the other figures. The central recess 33 may be provided in a configuration as shown in the panel of fig. 1. The central recess 33 extends to a position deeper in the panel 1 than the decorative layer 20. The central recess 33 is provided with a varnish layer 31. Optionally, this varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm. As shown in fig. 7, a portion of the side edge 34 of the central recess is provided with a varnish layer 31, such that the decorative layer is not visible at the side edge of the central recess 33.

Fig. 8 shows another embodiment of the first aspect of the invention in the same view as fig. 2. Like reference numerals have the same meaning. The embodiment shown in fig. 8 differs from the embodiment shown in fig. 2 in that the recess 30 is provided at the concave edge 4 instead of at the convex edge 3. The recess extends beyond the proximal end of the groove 54 in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges 3, 4. The convex edge 3 of the first pair of opposite edges 3, 4 is above the segment provided with the varnish layer 31. The varnish layer on this convex edge conceals the decorative layer 20 from view at the convex edge 3, thereby helping to achieve a more realistic imitation of the grout in the coupled state of the panels at the first pair of opposite edges 3, 4 of the panels. The construction of fig. 8 is described with respect to a first pair of opposing edges, but may also be provided at a second pair of opposing edges of the panel.

Fig. 9 shows another embodiment of the first aspect of the invention in the same view as fig. 4. The panel construction at the second pair of opposite edges 5, 6 is similar to that of figure 4. Like reference numerals have the same meaning. The difference between the embodiment of fig. 9 and the embodiment of fig. 4 is that the second recess 36 in fig. 9 is provided at the second male edge 5 instead of at the second female edge 6. The second concave edge 6 of the second pair of opposite edges 5, 6 is above the segment provided with the varnish layer 31. The varnish layer on this concave edge conceals the decorative layer 20 from view at the concave edge 6.

The configuration of fig. 9 is described with respect to a first pair of opposing edges, but may also be provided at a second pair of opposing edges of the panel.

Fig. 10 shows a method of installing a fold-down of a panel, such as a panel according to the first, third, fifth or sixth aspect of the invention. The panel 1 comprises a first pair of opposite edges 3, 4 and a second pair of opposite edges 5, 6. These edges are configured such that the male edges 3 of the first pair of opposite edges can be coupled into the female edges 4 of such panels already installed by a diagonal movement W. For example, the first pair of opposite edges 3, 4 of fig. 2 allows such coupling by means of a diagonal movement W.

In the same diagonal movement W, the male edges 5 of the second pair of opposite edges may be coupled to the female edges 6 of the second pair of opposite edges of the already installed panel via a downward movement.

Fig. 11 and 12 show a panel 1 according to a second aspect of the invention. The reference numerals have the same meaning as in fig. 1 to 9 unless otherwise specified. In the mounted state in fig. 12, the panel 1 shown in fig. 11 differs from the panels shown in fig. 1 to 9 in that the panel does not include a coupling portion. The panel comprises a first pair of opposite edges 3, 4. The first pair of opposite edges comprises a first edge 3 and a second edge 4. When a plurality of such panels are mounted in a covering, the first edge 3 is intended to face and preferably to contact the second edge 4 of a second such panel 1. The panel may be glued to a surface to form a covering for this surface. The second edge 4 comprises a first closing plane 61 and the first edge 3 comprises a second closing plane 62.

The panel 1 of fig. 11 comprises a central recess 33 parallel to the recess and parallel to the first pair of opposite edges 3, 4. In the example shown, the central recess 33 is arranged midway between the first pair of opposite edges 3, 4. The central recess 33 extends to a position deeper in the panel than the decorative layer. The central recess 33 extends the same depth as the recess 30. The central recess is provided with a varnish layer 31, which varnish layer 31 optionally comprises sand and/or particles preferably having a particle size of more than 20 μm. A portion of the side edges 34 of the recess 30 and the central recess 33 are provided with a varnish layer, so that the decorative layer 20 is not visible at these side edges.

A section of the second edge 4 is provided with a varnish layer 31.

Fig. 12 shows the two panels as shown in fig. 11 in mounted condition at their first pair of opposite edges 3, 4. The panels may be installed by gluing them to the subfloor. The first closing plane 61 of the second edge 1 contacts the second closing plane 62 of another such panel; thereby providing a contact surface between the two coupling panels. The contact surface is substantially perpendicular to the surface of the panel to which it is mounted.

The varnish layer 31 in the recess, the side edges of the recess and a section of the second edge 4 provide a realistic copy of the grout after panel installation, without the need for grouting after panel installation.

Fig. 13 to 21 illustrate a third aspect of the present invention in the same manner as fig. 1 to 9 illustrating the first aspect of the present invention. Fig. 22 to 23 illustrate a fourth aspect of the present invention in the same manner as fig. 11 to 12 illustrating the second aspect of the present invention. The reference numerals in fig. 13 to 23 have the same meaning as the corresponding reference numerals in fig. 1 to 9 and 11 to 12.

Fig. 13 shows an embodiment of a panel according to a third aspect of the invention. Fig. 14 shows a cross section of XIV-XIV of the panel according to fig. 13. Fig. 15 shows two panels as shown in fig. 13 coupled at a first pair of opposite edges thereof. Fig. 16 shows a section of XVI-XVI of the panel according to fig. 13. Fig. 17 shows two panels as shown in fig. 13 coupled at their second pair of opposite edges. Fig. 18 shows another embodiment of the third aspect of the invention in the same view as fig. 17. Fig. 19 shows an embodiment of the third aspect of the invention, wherein a central recess is provided. Fig. 20 shows another embodiment of the first aspect of the invention in the same view as fig. 14. Fig. 21 shows another embodiment of the first aspect of the invention in the same view as fig. 16. Fig. 22 shows a panel according to an embodiment of the fourth aspect of the invention. Fig. 23 shows the two panels as shown in fig. 22 in an installed state.

The difference between fig. 13 to 21 illustrating the third aspect of the present invention and fig. 1 to 9 illustrating the first aspect of the present invention is that not the recess 30 but the second recess 36, the central recess 33 or the second recess 34 is provided with a varnish layer (which has the reference numeral 31 in fig. 1 to 9); the recess 30, the second recess 36, the central recess 33 or the second recess 36 comprises a polymer filling material 71. The polymer filling material 71 at least partially fills the recess or the second recess or the central recess of the second central recess, wherein the polymer filling material extends vertically from a position below the position of the decorative layer 20 to a position above the position of the decorative layer 20 in the panel 1. In this way, the decorative layer 20 at the edges is hidden from view, and the edges (and thus the polymer filling material 71) comprising the recesses are coupled or aligned or contacted against the decorative layer 20. In a preferred embodiment of the third and fourth aspects of the invention, the thickness of the polymeric filler material 71 is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm.

The difference between fig. 11 and 12, which illustrate the second aspect of the invention, and fig. 22 and 23, which illustrate the fourth aspect of the invention, is that the recess 30 and the central recess 33 are not provided with a varnish layer (which has the reference numeral 31 in fig. 11 to 12); the recess 30 and the central recess 33 comprise a polymer filling material 71. The polymeric filler material 71 at least partially fills the recess 30 and the central recess 33, wherein the polymeric filler material extends vertically from a position below the position of the decorative layer 20 to a position in the panel 1 vertically above the position of the decorative layer 20. In this way, the decorative layer 20 at the edges is hidden from view, and the edges (and thus the polymer filling material 71) comprising the recesses are coupled or aligned or contacted against the decorative layer 20. In a preferred embodiment of the third and fourth aspects of the invention, the thickness of the polymeric filler material 71 is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm.

Fig. 24 to 33 illustrate a fifth aspect of the present invention.

Fig. 24 shows a cross section of a panel 1 according to an embodiment of the fifth aspect of the invention. Fig. 25 shows the two panels as shown in fig. 24 in a coupled state at their first pair of opposite edges 3, 4.

The panel 1 of fig. 24 and 25 comprises a substrate 10 and a top layer 11. The top layer 11 comprises a decorative layer 20 and a wear layer 21. The panel 1 is provided with a coupling portion 7, 8 at the first pair of opposite edges 3, 4, which coupling portions substantially cooperate with each other in the form of a male coupling portion 7 and a female coupling portion 8 for coupling two such panels to each other at the first pair of opposite edges 3, 4 thereof in a floor, wall or ceiling covering. The male coupling 7 is provided at the male edge 3 of the first pair of opposite edges. The female coupling 8 is provided at the female edges 4 of the first pair of opposite edges.

The male coupling 7 provided at the male edge 3 comprises a tongue 53 extending in a direction parallel to the panel surface. The female edge 4 comprises a groove 54, which groove 54 provides the female coupling 8. The recess is delimited by an upper lip 55 and a lower lip 56. The lower lip extends farther than the upper lip. The lower lip 56 comprises the locking element 13. The bottom of the tongue 53 comprises the locking element 14. In the condition in which two such panels 1 are coupled at their first pair of opposite edges 3, 4, the locking elements of the lower lip 13 contact the locking elements of the tongue 14, thereby establishing a locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel. This is preferred when this locking is established by pretensioning. The locking element 13 of the lower lip 13 is disposed distally of the distal end of the upper lip 55.

The male edge 3, more specifically the tongue 53 providing the male coupling 7, comprises a segment 40, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer 20. The visual appearance of the upper surface of the segment differs from the visual appearance of the decorative layer 20 over its entire surface. In the coupled condition in which a first such panel is coupled to the concave edge 4 of a second such panel at its convex edge 3, the concave edge 4 overlaps a portion of the upper surface of the section 40 of the convex edge 3 of the first such panel such that the upper surface 41 of the section 40 of the convex edge of the first such panel is hidden from view. The visible portion provides a grout portion imitation in the coupled state of the panels.

The portion of the upper surface of the segment that is visible in a view perpendicular to the surface of the joining panel is preferably at least 1.5mm wide, more preferably at least 2mm wide, more preferably at least 3mm wide, more preferably greater than 3.5mm wide, and preferably less than 5mm wide.

This is preferred when at least a portion (preferably all) of the upper surface of the segment 42, which is visible in a view perpendicular to the surface of the coupling panel, is parallel to the surface of the floor panel. This preferred embodiment increases the realism of the provided grout part replica.

Both the male edge 3 and the female edge 4 comprise a bevel 51. These inclined surfaces 51 are convex inclined surfaces and are at least partially curved. The bevel 51 at the male edge 3 is substantially a mirror image of the bevel 51 at the female edge 4.

The configuration of the edges as shown in fig. 24 and 25 may also be used at a second pair of opposite edges of the panel.

Fig. 26 shows a cross section at a second pair of opposite edges of a rectangular panel (whether square or rectangular) according to an embodiment of the fifth aspect of the invention. Fig. 27 shows the two panels in a coupled state as shown in fig. 26.

The panel 1 comprises a second pair of opposite edges 5, 6. The panel 1 is provided with second coupling parts 27, 28 at the second pair of opposite edges 5, 6, which substantially cooperate with each other in the form of a second male coupling part 27 and a second female coupling part 28 for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion 27 is provided at the second male edge 5 of the second pair of opposite edges. The second female coupling 28 is provided at the second female edge 6 of the panel.

The second concave edge 6 comprises a second upwardly directed downward hook 67. The second upwardly directed downward hook 67 comprises a lip 68 with a second upwardly directed locking element 69 defining a second female coupling 28 in the form of a second coupling recess 72 proximally thereof. The second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposite edges by a movement M substantially perpendicular to the surfaces of the panels to be coupled in this way.

In the embodiment shown in fig. 26 and 27, the edges of the second pair of panel edges are configured such that no locking between the panels coupled at their second pair of opposite edges 5, 6 in a direction perpendicular to the panel surfaces is provided at both the proximal end of the second upwardly directed locking element 69 and the proximal end of the second downwardly directed locking element 66.

The locking means comprise a second undercut 73 at the second concave edge 6. The second undercut 73 is for interaction with a locking element 81 at the distal end of the second downwardly directed locking element 66 of the coupling panel, thereby establishing a lock perpendicular to the panel surface at the distal end of the second downwardly directed locking element of the panel.

The second pair of opposite edges 5, 6 of the embodiment shown in fig. 26 and 27 are configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element 69. An embodiment may be provided in which the lock has a contact, and an embodiment may be provided in which the lock has no contact. In the embodiment shown in fig. 26 and 27, the distal end of the second upwardly directed locking element 69 comprises an undercut 76. The bottom surface of this undercut 76 serves to establish a lock in a direction perpendicular to the surface of the coupling panel. To this end, the proximal end of the second male edge 5 comprises a second corresponding hook 78 for interacting with an undercut 76 at the distal end of the second upwardly directed locking element 69 of the coupling panel to establish locking in a direction perpendicular to the surface of the coupling panel.

The downwardly directed locking element 66 comprises a section 40, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer 20. In the coupled condition of the first such panel coupled at its second male edge 5 to the second female edge 6 of the third such panel, the second female edge of the third such panel overlaps a portion of the upper surface of said segment 40 of the second male edge of the first such panel such that the portion 41 of the upper surface of said segment of the second male edge of the first such panel is hidden from view while the portion 42 of the upper surface of said segment of the second male edge of the first such panel is visible in a view perpendicular to the surface of the coupled panel. The visible portion provides a grout portion imitation in the coupled state of the panels. Preferably, at least a portion (preferably all) of the upper surface of said section 42 of the second convex edge, visible in a view perpendicular to the surface of the coupled first and third such panels, is parallel to the surface of the panels.

The second male edge 5 and the second female edge 6 each comprise a bevel 51. These inclined surfaces are raised inclined surfaces, which are at least partially curved. Preferably, the chamfer 51 at the second convex edge is substantially a mirror image of the chamfer 51 of the second concave edge.

A part of the segment 40 of the convex edge, the upper surface of which is arranged below the surface of the floor panel and below the location of the decor layer, is provided with a varnish layer 31.

The male edge 3 and the female edge 4 are provided with a bevel 51. The bevel is partially provided with the same varnish layer 31. These varnish layers 31 on the bevel 51 extend from below the decorative layer 20, in this example from the bottom of the bevel 51 to a position above the decorative layer 20. In this way, the decorative layer is hidden from view in the chamfer.

Alternative configurations of the locking means for locking the panel in a direction perpendicular to the panel surface are possible compared to those shown in fig. 26 and 27. For example, it is possible to use the configuration of the locking device of fig. 5.

Fig. 28 shows a cross section of a panel according to an embodiment of the fifth aspect of the invention in a view similar to fig. 24. Fig. 29 shows the two panels in a coupled state as shown in fig. 28. The reference numerals have the same meaning as in fig. 24 and 25.

The male edge 3, more specifically, provides a tongue 53 of the male coupling 7, comprising a segment 40, the upper surface of which is arranged below the surface of the floor panel and below the position of the decor layer 20. The visual appearance of the upper surface of the segment differs from the visual appearance of the decorative layer 20 over its entire surface. In the coupled state in which a first such panel is coupled to the concave edge 4 of a second such panel at its convex edge 3, the concave edge 4 overlaps a portion of the upper surface of the segment 40 of the convex edge 3 of the first such panel such that the portion 41 of the upper surface of the segment 40 of the convex edge of the first such panel is hidden from view, while the portion 42 of the upper surface of the segment is visible in a view perpendicular to the surface of the coupled panel. In the embodiment shown in fig. 28 and 29, in a first region 43 of the upper surface of the male coupling, the female edge 4 of the second such panel contacts the upper surface of the segment 40 of the male edge 3 of the first such panel, which segment is arranged below the surface of the floor panel and below the location of the decor layer. The upper surface of the tongue 53 comprises a second region 44 which is not as far as the first region 43, wherein the concave edge 4 of a second such panel overlaps the second region 44 without touching the second region 44, but such that the second region 44 is hidden from view. This second region 44 is farther from the surface of the floor panel than the first region 43.

A part of the segment 40 of the convex edge, the upper surface of which is arranged below the surface of the floor panel and below the location of the decor layer, is provided with a varnish layer 31. However, the first region 43 does not comprise this varnish layer, while the second region 44 comprises this varnish layer at least in part. The male edge 3 and the female edge 4 are provided with a bevel 51. These bevels are partly provided with the same varnish layer 31. These varnish layers 31 on the bevel 51 extend from below the decorative layer 20, in this example from the bottom of the bevel 51 to a position above the decorative layer 20. In this way, the decorative layer is hidden from view in the chamfer.

In a similar manner to fig. 28, a varnish layer may be provided in the embodiment shown in fig. 24 in the section 40 and on the bevel 51.

The configuration of the edges as shown in fig. 28 and 29 may also be used at the second pair of opposite edges of the panel.

Fig. 30 shows a cross section of a panel according to an embodiment of the fifth aspect of the invention. Fig. 31 and 32 show two panels in a coupled state as shown in fig. 30.

The panel of fig. 30 is largely constructed similarly to the panel of fig. 24. However, the coupling of the panels of fig. 30 is explicitly configured such that in the state of coupling of a panel with another such panel at its respective edge of the first pair of opposite edges 3, 4, said mechanical locking means preventing the locking panels from separating in a direction perpendicular to the coupling edge and parallel to the surface of the coupled panel, prevent such separation, while allowing a play of at least 0.2mm in this direction; preferably less than 0.5mm. Fig. 31 and 32 illustrate this play by showing the panels coupled in two different play positions.

In the panel of fig. 30, this allows play at least to some extent due to the relative position in a direction perpendicular to the first pair of opposite edges, which is parallel to the surfaces of the panel coupled at its first pair of opposite edges overlapping the concave edges of the upper surface of the segment of the convex edge. More specifically, the overlapping sections of the convex edges are parallel to the surface of the panel.

Preferably, the overlap of the concave edge and the convex edge is provided where the convex edge is parallel to the surface of the panel.

Fig. 33 shows a panel in a coupled state according to an embodiment of the fifth aspect of the present invention. The construction of the panel is largely similar to that shown in fig. 30 and 31. In fig. 33, the same reference numerals have the same meaning as in fig. 30 and 31. The difference in the embodiment in fig. 33 is that in the embodiment in fig. 33 in a similar way to the embodiment in fig. 28 and 29, in the first region 43 of the upper surface of the male coupling, the female edge 4 of the second such panel contacts the upper surface of the segment 40 of the male edge 3 of the first such panel, which segment is arranged below the surface of the floor panel and below the location of the decor layer. The upper surface of the tongue 53 comprises a second region 44 which is not as far as the first region 43, wherein the concave edge 4 of a second such panel overlaps the second region 44 without touching the second region 44, but such that the second region 44 is hidden from view. This second region 44 is farther from the surface of the floor panel than the first region 43.

A part of the segment 40 of the convex edge, the upper surface of which is arranged below the surface of the floor panel and below the location of the decor layer, is provided with a varnish layer 31. However, the first region 43 does not comprise this varnish layer, while the second region 44 comprises this varnish layer at least in part.

In an embodiment of the fifth aspect of the invention, it is preferred when the distance from the surface of the panel of the segment of the male coupling edge is substantially the same as the distance from the surface of the panel of the segment of the second male edge.

In an embodiment of the fifth aspect of the invention, it is preferred when the portion of the upper surface of the segment of the convex edge visible in a view perpendicular to the surface of the coupling panel has substantially the same color as the portion of the upper surface of the segment of the second convex edge visible in a view perpendicular to the surface of the coupling panel.

When, in an embodiment of the fifth aspect of the invention, the varnish layers are provided at the first and second pair of opposite edges, these varnish layers preferably have the same composition.

Each of these options increases the realism of simulating grout in the installed panel.

Fig. 34 to 38 illustrate a sixth aspect of the present invention.

Fig. 34 shows a first pair of opposite edges of a panel 1 according to an embodiment of the sixth aspect of the invention. Fig. 35 shows two panels coupled at a first pair of opposite edges thereof as shown in fig. 34. Fig. 36 shows panels according to an embodiment of the sixth aspect, which are coupled at a second pair of opposite edges.

In combination, fig. 34, 35 and 36 illustrate an embodiment according to the sixth aspect of the present invention.

The panel 1 comprises a substrate 10 and a top layer 11. The top layer comprises a decorative layer 20 and a wear layer 21. The panels are provided at the first pair of opposite edges 3, 4 with coupling parts 7, 8 in the form of substantially tongues 53 and grooves 54 cooperating with each other for coupling two such panels to each other at the first pair of opposite edges thereof in a floor, wall or ceiling covering. The tongue 53 is provided at the male edge 3 of the first pair of opposite edges. The tongue 53 extends at the convex edge in a direction parallel to the panel surface. A groove 54 is provided at the concave edge 4 of the first pair of opposite edges. The recess 54 is delimited by an upper lip 55 and a lower lip 56. The lower lip extends farther than the upper lip.

The lower lip 56 comprises the locking element 13. The bottom of the tongue 53 comprises the locking element 14. In the condition in which two such panels are coupled at their first pair of opposite edges 3, 4, the locking elements 13 of the lower lip contact the locking elements 14 of the tongue, thereby establishing a locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel. Preferably, this locking is established by pretensioning. The locking element 13 of the lower lip 56 is disposed distally of the distal end of the upper lip 55.

The coupling of the first pair of opposite edges 3, 4 is configured such that a first such panel can couple its male edge 3 into the female edge 4 of a second such panel by a diagonal movement W (see fig. 10 for an explanation of the diagonal movement W).

The surface of the male edge 3 is provided with a recess 30. The recess extends deeper into the panel than the decorative layer 20. In this example, the recess 30 extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges 3, 4, vertically above the locking element 13 of the lower lip 56 which will contact the locking element 14 of the tongue 53 in a state in which two such panels are coupled at their first pair of opposite edges 3, 4.

In the example shown, the recess 30 includes a flat bottom and a side 34 proximal from the bottom.

The proximal end of the concave edge 4 of the first pair of opposite edges 3, 4 comprises a first closing plane 61; and the distal ends of the male edges 3 of the first pair of opposing edges comprise a second closure plane 62. In the condition in which two such panels are joined at their first pair of opposite edges 3, 4, the first closure plane 61 of a first such panel contacts the second closure plane 62 of a second such panel, thereby providing a contact surface between the two joined such panels, wherein the contact surface is substantially perpendicular to the surface of the joined panels.

The panel 1 comprises a second pair of opposite edges 5, 6. The panel 1 is provided with second coupling parts 27, 28 at the second pair of opposite edges 5, 6, which substantially cooperate with each other in the form of a second male coupling part 27 and a second female coupling part 28 for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion 27 is provided at the second male edge 5 of the second pair of opposite edges. The second female coupling 28 is provided at the second female edge of the panel 6. The second coupling part is provided with second mechanical locking means preventing two such panels coupled at their second pair of opposite edges 5, 6 from being separated in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The second male edge 5 comprises a downwardly directed upper hook portion 64. The downwardly directed upward hook comprises a lip 65 with a downwardly directed locking element 66 forming the second male coupling portion 27. The second concave edge 6 comprises an upwardly directed lower hook 67. The upwardly directed lower hook comprises a lip 68 with an upwardly directed locking element 69 which defines, proximally thereof, a second female coupling portion 28 in the form of a coupling recess 72. The second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposing edges by a movement M substantially perpendicular to the surfaces of the two such panels.

The coupling portions of the first pair of opposite edges 3, 4 and the second coupling portions of the second pair of opposite edges 5, 6 are configured such that a plurality of such panels can be coupled into the covering using a folded-down mounting method. The surface of the second concave edge 6 is provided with a second concave portion 36. The second recess 36 extends to a position deeper in the panel than the decorative layer 20. The second recess 36 includes a flat bottom and a side 34 proximal from the bottom.

As shown, when the width of the second recess 36 is substantially the same as the width of the recess 30, this adds a realistic grout analog through the recess and the second recess.

The first pair of opposite edges 3, 4 and/or the second pair of opposite edges 5, 6 are provided with a bevel 51. In the example shown, the bevel does not extend below the location of the decorative layer, however it is possible that the bevel extends below the location of the decorative layer. It is also possible that the panel edge does not comprise a bevel.

The proximal end of the second concave edge 6 comprises a third closing plane 61. The distal end of the second convex edge 5 comprises a fourth closure plane 62. In the condition in which two such panels are coupled at their second pair of opposite edges 5, 6, the third closure plane 61 of a first such panel contacts the fourth closure plane 62 of the other such panel, thereby providing a contact surface between the thus coupled panels. In this example, the contact surface is substantially perpendicular to the surface of the coupling panel. The edges of the second pair of opposite edges 5, 6 are provided with mechanical locking means such that in the coupled state in which a first such panel is coupled to a third such panel at its second pair of opposite edges, a contact area is established between the mechanical locking means, thereby providing a locking perpendicular to the panel surface at the distal end of the downwardly directed locking element of the panel 66. Preferably, as shown in the embodiment of fig. 36 (and 37), the extension 82 of the contact surface intersects the contact area between the mechanical locking means.

The locking means comprise an undercut 73 at the second concave edge 6. The undercut interacts with the downwardly directed locking element 66 of the coupling panel, more specifically with the locking element 81 of the downwardly directed locking element 66, thereby providing a locking perpendicular to the panel surface at the distal end of the downwardly directed locking element of the panel.

The proximal end of the downwardly directed locking element 66 comprises a first inclined contact surface 74. The proximal end of the upwardly directed locking element 69 comprises a second inclined contact surface 75. In the condition in which two such panels are coupled at their second pair of opposite edges 5, 6, the first inclined contact surface 74 contacts the second inclined contact surface 75 of the other panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel. This is preferred when this locking is established by pretensioning.

The second pair of opposite edges 5, 6 of the embodiment shown in fig. 36 is configured such that in the state in which two such panels are coupled at their second pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end pointing upwards towards the locking element 69.

The cross section of the recess perpendicular to the panel edge 3 in which the recess 30 is provided is substantially the same as the cross section of the second recess 36 perpendicular to the panel edge 6 in which the second recess 36 is provided.

Preferably, the panel edge provided with the recess engages with the panel edge provided with the second recess in the joint; wherein in the joint the recess continues without interruption to the second recess.

Fig. 37 shows a panel according to another embodiment of the sixth aspect of the invention coupled at a second pair of opposite edges. The same reference numerals have the same meaning as in fig. 36 and 37. The embodiment of fig. 37 differs to some extent from the way in which the lock is established in a direction perpendicular to the panel surface.

No locking in a direction perpendicular to the surfaces of the panels coupled at their second pair of opposite edges 5, 6 is provided both at the proximal end pointing upwards towards the locking element 69 and at the proximal end pointing downwards towards the locking element 66.

In a similar way to the embodiment shown in fig. 36, the locking means comprise an undercut 73 at the second concave edge 6. The undercut interacts with the downwardly directed locking element 66 of the coupling panel, more specifically with the locking element 81 of the downwardly directed locking element 66, thereby providing a locking perpendicular to the panel surface at the distal end of the downwardly directed locking element 66 of the panel. The proximal end of the downwardly directed locking element 66 comprises a first inclined contact surface 74. The proximal end of the upwardly directed locking element 69 comprises a second inclined contact surface 75. In the condition in which two such panels are coupled at their second pair of opposite edges 5, 6, the first inclined contact surface 74 contacts the second inclined contact surface 75 of the other panel; thereby establishing locking of the coupling panel in a direction perpendicular to the surface of the coupling panel. This is preferred when this locking is established by pretensioning.

The second pair of opposite edges 5, 6 are configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end directed upwards towards the locking element 69. This lock may be provided with or without contact, depending on the particular embodiment. The distal end of upwardly directed locking element 69 includes an undercut 76. The bottom surface of the undercut 76 is used to establish a lock in a direction perpendicular to the surface of the coupling panel. The proximal end of the second male edge 5 comprises a corresponding hook 78 arranged for interaction with the upwardly directed locking element 69 of the coupling panel to establish a lock in a direction perpendicular to the surface of the coupling panel.

Fig. 38 shows a panel according to another embodiment of the sixth aspect, coupled at a second pair of opposite edges. The same reference numerals have the same meaning as in fig. 36 and 37.

The difference between the embodiments of the second pair of opposite edges 5, 6 shown in fig. 38 compared to the embodiments shown in fig. 36 and 37 is that no locking is established at the second pair of opposite edges 5, 6 between the distal end of the male edge 5 and the proximal end of the female edge 6 in a direction perpendicular to the surface of the coupling panel.

The recess 30 and the second recess 36 may be provided with a varnish layer 31, as shown in the embodiment shown in fig. 35 and 36. The varnish layer is visible in the coupled state of the panels. The varnish layer provides a grout part replica. The sides (or side edges) 34 of the recess 30 and the second recess 36 are provided with a varnish layer 31. The edges of the panel opposite the edges comprising the recess 30 or the second recess 36 are located above the segments provided with the varnish layer, which segments cover the position of the decorative layer at these edges, so that the decorative layer is no longer visible at the edges covered by the varnish layer and at these edges. These varnish layers help provide a grout copy of the joining panel.

It is possible to at least partially fill the recess 30 and the second recess 36 with a polymer filling material 71, as shown in the embodiment shown in fig. 37 and 38. The polymeric filler material helps to provide a very realistic grout pattern for the installed panel. The polymeric filler material extends vertically from a location below the location of the decorative layer 20 to a location vertically above the location of the decorative layer in the panel. The polymeric fill material 71 provides the portion of the panel edge having the polymeric fill material thereon.

Fig. 39 to 43 show examples of panels according to seventh, eighth and ninth aspects of the invention. These aspects are illustrated in these examples in combination, however, such combination is not essential to the invention. Each of these aspects may be provided separately or combined with two of these aspects or with all three of these aspects. Non-contradictory combinations with other aspects of the invention are also possible.

Fig. 39 shows an example of a panel according to the seventh, eighth and ninth aspects of the present invention. Fig. 40 shows the two panels shown in fig. 39 in a joined state at a first pair of opposite edges thereof.

The panel 1 of fig. 39 comprises a substrate 10 and a top layer 11. The thickness T of the panel of the example shown is 5mm. The top layer 11 comprises a decorative layer 20 and a wear layer 21. The panels are provided at the first pair of opposite edges 3, 4 with coupling parts 7, 8 which essentially cooperate with each other in the form of male coupling parts 7 and female coupling parts 8 for coupling two such panels to each other at their first pair of opposite edges 3, 4 in a floor, wall or ceiling covering. The male coupling 7 is provided at the male edge 3 of the first pair of opposite edges. The coupling parts are provided with mechanical locking means 13, 14 which prevent the two coupling panels from being separated in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The female coupling 8 is provided at the female edge 4 of the first pair of opposite edges 3, 4. The male coupling 7 comprises a tongue 53. Female coupling 8 comprises a groove 54 delimited by an upper lip 55 and a lower lip 56; wherein the lower lip 56 extends further than the upper lip 55. The lower lip 56 comprises the locking element 13. The bottom of the tongue 53 comprises the locking element 14. As shown in fig. 40, in the state in which two such panels are coupled at their first pair of opposite edges, the locking element 13 of the lower lip contacts the locking element 14 of the tongue, thereby establishing locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel. Preferably, this locking is established by pretensioning, which may be achieved via the overlapping profile of the relevant segments of the panel edge. In the coupled condition of the male edge with the female edge of another such panel, the upper surface of tongue 53 contacts the bottom of upper lip 55. In the example shown, this contact is substantially parallel to the panel surface. In alternative embodiments, this contact may form an angle with the panel surface of less than 5 °.

The panel 1 may be coupled to another such panel at a first pair of its opposite edges 3, 4, with the male edge 3 of the panel 1 being coupled to the female edge 4 of the other such panel by the oblique movement of the tongue 53 of the panel into the groove 54 of the other such panel.

The surface of the male edge 3 is provided with a recess 91. In the example shown, this recess 91 comprises at least a section 92 parallel to the panel surface.

The substrate 10 includes a first layer 101 and a second layer 102 disposed closer to the surface of the panel than the first layer 101. The composition of the first layer is different from the composition of the second layer. The second layer is made of a softer material than the first layer. The tongue 53 is provided in the first layer 101. The recess 91 extends into the second layer 102. The proximal boundary 103 of the recess extends substantially perpendicularly through the decorative layer 20. In the example shown, the depth D1 of the recess relative to the panel surface is 0.65mm.

The upper lip 55 includes a distal portion 93 extending from the panel edge. In the example shown, this distal portion 93 extending from the panel edge is provided as a nose. The bottom surface of the distal portion 93 is disposed in the base. In the coupled state of the concave edge with the convex edge of another such panel, the distal portion 93 of the upper lip 55 of the concave edge at least partially overlaps the recess 91 at the surface of the convex edge. This overlap is provided by contact between the bottom of the distal portion 93 and the recess 91. In embodiments of the invention, this contact may have a pretension, for example by providing an overlapping profile of the relevant sections of the panel edge. The overlap between the distal portion and the recess at the surface of the convex edge is provided at a vertical distance D2.95 mm from the contact 94 between the upper surface of the tongue and the bottom surface of the upper lip.

Distal portion 93 includes a bevel 95. The male edge 3 comprises a bevel 96 located proximally of the recess 91.

The recess 91 is provided with a varnish layer 97. The bevel 95 of the distal portion 93 is partly provided with a varnish layer 97 such that in the state in which two such panels are coupled at their first pair of opposite edges 3, 4, the varnish layer of the recess visually continues into the varnish layer of the bevel 95 of the distal portion. The varnish layer 97 on the recess 91 extends partly onto the bevel 96 provided at the convex edge 3. In the example shown, the width W1 of the recess 91 is equal to 2.3mm. The visible width W2 of the recess in the coupling panel is equal to 2mm.

In the example shown, the distal edge 98 of the distal portion 93 extends in the horizontal direction from the concave edge a distance D equal to 0.86 mm.

In the coupled state of the concave edge 4 to the convex edge 3 of another such panel, a gap 99 is provided, which extends horizontally between the convex edge and the concave edge and vertically between the distal portion of the tongue and the upper surface, and a gap 100 is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

The distal boundary 104 of the distal portion extends substantially perpendicularly through the decorative layer 20.

The lower lip 56 comprises a projection 110 on its upper side, the highest point 111 of which is arranged proximally of the locking element 13 and distally of the most distant point of the upper lip 55. The lower lip 56 includes a recessed section 112 at its upper surface. This recessed section 112 is recessed from a position more proximal than the furthest point of the upper lip to a position more distal than the furthest point of the upper lip. This recessed section is disposed proximal to the highest point 111 of the protrusion. The recessed section 112 is sufficiently large and configured such that when the male edge of the panel is coupled by oblique movement, the distal end of the tongue 53 can enter into and then emerge through the recessed section.

The recessed section 112 comprises a distal side 113 having an angle a with the bottom of the panel of at least 10 °, preferably less than 25 °, over at least 50% of the distal side. This distal side 113 extends distally from the proximal to the most distal end of the upper lip 55. In the example shown, angle a is equal to 15 °.

The locking element 13 of the lower lip 56 comprises a first contact surface 120, which is arranged proximally of the locking element 13. The first contact surface 120 has an angle A1 equal to 35 ° with the bottom of the panel. The lower lip 56 also includes an inclined surface that slopes upwardly from the bottom of the panel in the proximal direction of the panel. This inclined surface comprises a second contact surface 121 having an angle A2 equal to 35 ° with the bottom of the panel. The bottom of the tongue 53 comprises a third contact surface 122 having an angle A3 equal to 35 ° with the bottom of the panel. The bottom of the tongue 53 comprises a fourth contact surface 123 having an angle A4 equal to 35 ° with the bottom of the panel. The third 122 and fourth 123 contact surfaces are provided at opposite sides of the locking element 14, which projects downwards from the tongue 53. Other preferred values of the angles A1, A2, A3 and A4 are for example 25 ° and 30 °.

In the coupled state of two such panels (as shown in fig. 40), the first contact surface 120 contacts the third contact surface 122 of the other panel. The second contact surface 121 contacts a fourth contact surface 123 of the other panel.

The gaps 99, 100 provided in the horizontal direction between the distal end of the male edge 3 and the edge of the female edge 4 of the other panel allow to adapt the expansion of the male edge towards the female edge of the other panel in the coupled state of the panels. Providing a gap 125 in the horizontal direction between the distal end of the concave edge 4 of a panel and the edge of the convex edge 3 of another panel allows to adapt the expansion of the concave edge towards the convex edge of the other panel in the coupled state of the panels.

Fig. 41 shows another example of the panels according to the seventh, eighth and ninth aspects of the invention in a coupled state at a first pair of opposite edges thereof. The reference numerals have the same meaning as in fig. 39 and 40. No varnish layer is provided in the recess 91.

Fig. 42 and 43 show two further examples of the panels according to the seventh, eighth and ninth aspects of the invention. The reference numerals have the same meaning as in fig. 39 to 41. In the example shown in fig. 42, the bevels 95, 96 at the edges of both panels are convex rounded bevels. In the example shown in fig. 43, the inclined surfaces 95, 96 at the edges of both panels are concave circular inclined surfaces. Fig. 42 and 43 show examples in which a varnish layer 97 has been applied, these varnish layers 97 not being necessary for the invention.

Fig. 44 shows a first pair of opposite edges of a panel according to at least a seventh aspect of the invention. Fig. 45 shows two panels according to fig. 44 coupled to each other at a first pair of opposite edges thereof.

The panel 1 of fig. 44 comprises a substrate 10 and a top layer 11. The thickness T of the panel of the example shown is 5mm. The top layer 11 comprises a decorative layer 20 and a wear layer 21. The panels are provided at the first pair of opposite edges 3, 4 with coupling parts 7, 8 which essentially cooperate with each other in the form of male coupling parts 7 and female coupling parts 8 for coupling two such panels to each other at their first pair of opposite edges 3, 4 in a floor, wall or ceiling covering. The male coupling 7 is provided at the male edge 3 of the first pair of opposite edges. The coupling parts are provided with mechanical locking means 13, 14 which prevent the two coupling panels from being separated in a direction perpendicular to the surfaces of the coupling panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupling panels. The female coupling 8 is provided at the female edge 4 of the first pair of opposite edges 3, 4. The male coupling 7 comprises a tongue 53. Female coupling 8 comprises a groove 54 delimited by an upper lip 55 and a lower lip 56; wherein the lower lip 56 extends further than the upper lip 55. The lower lip 56 comprises the locking element 13. The bottom of the tongue 53 comprises the locking element 14. As shown in fig. 45, in the state in which two such panels are coupled at their first pair of opposite edges, the locking element 13 of the lower lip contacts the locking element 14 of the tongue, thereby establishing locking of the coupled panel at its first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panel. Preferably, this locking is established by pretensioning, which may be achieved via the overlapping profile of the relevant segments of the panel edge. In the coupled condition of the male edge with the female edge of another such panel, the upper surface of tongue 53 contacts the bottom of upper lip 55. In the example shown, this contact is substantially parallel to the panel surface. In alternative embodiments, this contact may form an angle with the panel surface of less than 5 °.

The substrate 10 includes a first layer 101 and a second layer 102 disposed closer to the surface of the panel than the first layer 101. The composition of the first layer is different from the composition of the second layer. In a preferred embodiment, the second layer is made of a softer material than the first layer. The tongue 53 is provided in the first layer 101. The recess 91 extends into the second layer 102 but does not extend into the first layer 101. The proximal boundary 103 of the recess extends substantially perpendicularly through the decorative layer 20. In the example shown, the depth D1 of the recess relative to the panel surface is 0.65mm.

The upper lip 55 includes a distal portion 93 extending from the panel edge. In the example shown, this distal portion 93 extending from the panel edge is provided as a nose. The bottom surface of the distal portion 93 is disposed in the base. In the coupled state of the concave edge with the convex edge of another such panel, the distal portion 93 of the upper lip 55 of the concave edge at least partially overlaps the recess 91 at the surface of the convex edge. This overlap is provided by contact between the bottom of the distal portion 93 and the recess 91. In embodiments of the invention, this contact may have a pretension, for example by providing an overlapping profile of the relevant sections of the panel edge. The overlap between the distal portion and the recess at the surface of the convex edge is provided at a vertical distance D2 of 0.95mm from the contact 94 between the upper surface of the tongue and the bottom surface of the upper lip.

Distal portion 93 includes a bevel 95. The male edge 3 comprises a bevel 96, which bevel 96 is located proximally of the recess 91.

In the example shown, the width W1 of the recess 91 is equal to 2.3mm. The visible width W2 of the recess in the coupling panel is equal to 2mm.

In the example shown, the distal edge 98 of the distal portion 93 extends in the horizontal direction from the concave edge by a distance D equal to 0.86mm.

In the coupled state of the concave edge 4 with the convex edge 3 of another such panel, a gap 100 is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

The recess 91 extends into the substrate 10.

The distal boundary 104 of the distal portion extends substantially perpendicularly through the decorative layer 20. In the example shown, the distal boundary 104 of the distal portion 93 extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm.

The proximal boundary 103 of the recess 91 extends substantially perpendicularly through the decorative layer. The proximal boundary 103 of the recess 91 extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; and preferably over a distance of less than 0.25 mm.

In the coupled state, a gap 125 is provided in the horizontal direction between the distal end of the concave edge 4 of the panel and the edge of the convex edge 3 of the other panel, allowing to adapt the expansion of the concave edge towards the convex edge of the other panel in the coupled state of the panels.

As shown in fig. 45, in the coupled state of the concave edge 4 with the convex edge 3 of another such panel, the distal end of the upper lip 55 below the distal portion 93 contacts the convex edge 3 of another such panel over the entire height of the distal end of the upper lip below this distal portion. This contact of the distal end of the upper lip below the distal portion is provided at a section of this distal end of the upper lip that is substantially perpendicular to the panel surface.

Fig. 45 shows an optional feature in which, in the condition in which the two panels are coupled at their first pair of opposite edges 3, 4, at the concave edge 4 located proximal to the distal boundary 104 of the distal portion 93, the minimum distance D4 perpendicular to the panel surface between the lower lip 56 and the tongue 53 is at least 0.1mm. In the example shown, the distance D4 is 0.18mm.

Fig. 46 shows a first pair of opposite edges of a panel according to at least a seventh aspect of the invention. Fig. 47 shows two panels according to fig. 46 coupled to each other at a first pair of opposite edges thereof.

The panels of fig. 46 and 47 are largely similar to the panels shown in fig. 46 and 47. The reference numerals in fig. 46 and 47 have the same meaning as the same reference numerals of fig. 44 and 45.

The panels of fig. 46 and 47 include a lip 130 protruding from the convex edge. A lip 130 is disposed in the second layer 102 of the substrate. This second layer 102 is softer than the first layer 101 of the substrate.

In the condition in which two such panels are coupled at their first pair of opposite edges, contact is made between, on the one hand, the distal end of the upper lip 55 below the distal portion 93 of one panel and, on the other hand, the lip 130 protruding from the convex edge 3 of the other panel. The male edge 3 and the female edge 4 are configured such that when two such panels are coupled at a first pair of opposing edges, the protruding lip 130 overlaps the female edge by at least 0.05mm, preferably at least 0.10mm, in a direction parallel to the panel surface and perpendicular to the coupled edges. Thus, in the coupled state, the protruding lip 130 contacts the concave edge of the other panel by pretensioning. Since the protruding lip is made of a soft material of the second layer 102 of the base, the protruding lip will slightly bulge or bend during coupling, thereby ensuring a reliable contact between the two panel edges.

Fig. 47 shows an optional feature in which, in the condition in which the two panels are coupled at their first pair of opposite edges 3, 4, at the concave edge 4 proximal to the distal boundary 104 of the distal portion 93, the minimum distance D4 perpendicular to the panel surface between the lower lip 56 and the tongue 53 is at least 0.1mm. In the example shown, the distance D4 is 0.18mm.

Fig. 48 shows an embodiment of a panel according to at least a seventh aspect of the invention. The panel shown in fig. 48, which is coupled at its first pair of opposite edges 3, 4, is largely similar to the panels shown in fig. 44 and 45. The reference numerals in fig. 48 have the same meaning as the corresponding reference numerals in fig. 44 and 45. The difference between the panel of fig. 48 and the panels shown in fig. 44 and 45 is that, in the coupled state of the panels, not the bottom of the distal portion 93 and the recess 91 are in contact, but the overlap of the distal portion 93 and the recess 91 is provided with a gap D3 between the bottom of the distal portion 93 and the bottom of the recess 91. The gap D3 is preferably at least 0.1mm, preferably less than 0.3mm, more preferably at most 0.2mm.

Fig. 49 shows a panel according to a tenth aspect of the invention. Fig. 50 shows the two panels in a coupled condition at their second pair of opposite edges 5, 6 as shown in fig. 49. The panel comprises a substrate 10 and a top layer 11. The top layer comprises a decorative layer 20 and a wear layer 21. The panel comprises a second pair of opposite edges 5, 6. The panels are provided with a second coupling portion 27, 28 at a second pair of opposite edges, which substantially co-operate with each other in the form of a second male coupling portion 27 and a second female coupling portion 28 for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering. The second male coupling portion 27 is provided at the second male edge 5 of the second pair of opposite edges. The second female coupling 28 is provided at the second female edge of the panel 6. The second coupling part is provided with second mechanical locking means preventing the two such panels coupled at their second pair of opposite edges 5, 6 from being separated in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupled edges in a plane parallel to the coupled panels. The second male edge 5 comprises a downwardly directed upper hook portion 64. The downwardly directed upward hook comprises a lip 65 with a downwardly directed locking element 66 forming the second male coupling portion 27. The second concave edge 6 comprises an upwardly directed lower hook 67. The upwardly directed lower hook comprises a lip 68 with an upwardly directed locking element 69 which defines, proximally thereof, a second female coupling portion 28 in the form of a coupling recess 72. The second male coupling portion and the second female coupling portion are configured such that two such panels may be coupled to each other at their respective second pair of opposing edges by movement substantially perpendicular to the surfaces of the coupled two such panels.

In the embodiment of fig. 49 and 50, the second male coupling part 27, the second female coupling part 28 and their locking means are constructed in the same way as the panel shown in fig. 37. Reference numerals of fig. 49 and 50 corresponding to those of fig. 37 have the same meaning.

The surface of the second concave edge 6 is provided with a recess 91. In the example shown, the recess 91 comprises a section 92 parallel to the panel surface. The downwardly directed upper hook 64 comprises a distal portion 93 extending from the second convex edge 5. The bottom surface of the distal portion is disposed in the base 10. A recess 91 at the surface of the second concave edge 6 extends into the base 10. In the example shown, the substrate 10 comprises a first layer 101 and a second layer 102. The second layer 102 is disposed closer to the surface of the panel than the first layer 101. The composition of the first layer is different from the composition of the second layer. In the example shown, the second layer is made of a softer material than the first layer. In the example shown, the first layer 101 and the second layer 102 comprise polyvinyl chloride and a filler. In the example shown, the recess 91 at the surface of the second concave edge 6 extends into the second layer 102, but not into the first layer 101.

In the coupled state of the second concave edge 6 with the second convex edge 5 of another such panel, the distal portion 93 extending from the second convex edge 5 overlaps with the recess 91 at the surface of the second concave edge 6. This overlap provides a gap D3 between the bottom of the distal portion and the bottom of the recess 91. The gap D3 between the bottom of the distal portion and the recess 91 is preferably at least 0.1mm, preferably less than 0.3mm, more preferably at most 0.2mm.

In the example shown in fig. 49 and 50, the distal portion 93 extending from the second convex edge 5 includes a bevel 95. The second concave edge 6 comprises a bevel 96 proximal to the recess 91.

In the example shown, the width W1 of the recess 91 at the surface of the second concave edge 6 is at least 2mm, preferably at least 2.3mm, and the visible width W2 of the recess at the surface of the second convex edge 6 in the coupling panel is at least 1.5mm, more preferably at least 2mm.

The distal edge 98 of the distal portion 93 extending from the second convex edge 5 extends from the second convex edge in a horizontal direction a distance D of at least 0.25mm, preferably at least 0.7mm.

The proximal boundary 103 of the recess 91 at the surface of the second concave edge 6 extends substantially perpendicularly through the decorative layer 20. The proximal boundary 103 of the recess 91 at the surface of the second concave edge 6 extends substantially perpendicularly through the panel over a distance of less than the thickness of the decorative layer plus 0.15 mm; and preferably over a distance of less than 0.25 mm.

The bottom surface of the distal portion 93 extending from the second convex edge 5 is disposed in the base 10. The distal boundary 104 of the distal portion extending from the second convex edge 5 extends substantially perpendicularly through the decorative layer 20. The distal boundary 104 of the distal portion 93 extending from the second convex edge 5 extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; and preferably over a distance of less than 0.25 mm.

The depth D1 of the recess 91 at the surface of the second concave edge 6 relative to the panel surface is preferably at least 0.4mm, more preferably at least 0.5mm. The thickness D1 of the recess 91 at the surface of the second concave edge 6 against the panel surface is preferably less than 2mm, more preferably less than 1.5mm.

Fig. 51 and 52 show an embodiment of the tenth aspect of the present invention in the same view as fig. 50. The difference between the panels shown in fig. 51 and 52 and the embodiments shown in fig. 49 and 50 is the configuration of the second male coupling part 27 and the second female coupling part 28 and their locking means.

The configuration of the second male coupling portion 27 and the second female coupling portion 28 of the embodiment of fig. 51 and the locking means thereof is similar to that shown in fig. 36. Corresponding reference numerals have the same meaning.

The configuration of the second male coupling portion 27 and the second female coupling portion 28 of the embodiment of fig. 52 and the locking means thereof is similar to that shown in fig. 38. Corresponding reference numerals have the same meaning.

Fig. 53 shows an embodiment of the tenth aspect of the invention in the same view as fig. 50. The panel of fig. 53 is largely similar to the panel shown in fig. 50. However, rather than being arranged to overlap with the gap between the base of the distal portion and the base of the recess as in fig. 50, the overlap in fig. 53 is to provide contact between the base of the distal portion and the recess. The reference numerals in fig. 53 have the same meaning as in fig. 50.

As shown in fig. 39 to 48, the panel constructed at its first pair of opposite edges 3,4 may advantageously be constructed at its second pair of opposite edges 5, 6, as shown in fig. 49 to 53, which enables mounting of the panel according to the fold-down method shown in fig. 10.

Claims

1. A panel (1) comprising a substrate (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21), wherein the panels are provided with coupling parts (7, 8) at a first pair of opposite edges (3, 4), which coupling parts cooperate with each other essentially in the form of male coupling parts (7) and female coupling parts (8) for coupling two such panels to each other at their first pair of opposite edges (3, 4) in a floor, wall or ceiling covering;

Wherein the male coupling (7) is provided at the male edge (3) of the first pair of opposite edges;

wherein the female coupling (8) is provided at the female edge (4) of the first pair of opposite edges;

wherein the coupling is provided with mechanical locking means (13, 14) preventing the two coupled panels from separating in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupled panels;

wherein the surface of at least one of the convex edge (3) and the concave edge (4) is provided with a recess (30),

preferably, wherein the recess (30) extends to a position deeper in the panel than the decorative layer (20);

wherein the recess has a varnish layer (31) optionally comprising sand and/or particles preferably having a particle size of more than 20 μm;

wherein the varnish layer of the recess is at least partially visible in a state in which such panel is coupled with another such panel at their respective first pair of opposite edges;

preferably, wherein the thickness of the varnish layer is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm;

Preferably, wherein at least a portion of a side edge (34) of the recess is provided with the varnish layer;

preferably, wherein the edge of the first pair of opposite edges (3, 4) opposite the edge comprising the recess (30) is located at least above the segment provided with the varnish layer, preferably wherein the varnish layer at this edge contributes to providing a grout copy of the coupled panels.

2. Panel according to claim 1, wherein the surface of the varnish layer (31) comprises segments parallel to the surface of the panel.

3. A panel according to any one of the preceding claims; wherein the recess (30) extends into the substrate (10).

4. Panel according to any one of the preceding claims, wherein the panel comprises at least one central recess (33) at a surface of the panel, wherein the central recess is arranged parallel to the recess (30) and to the first pair of opposite edges (3, 4);

preferably, wherein the central recess is provided midway between the first pair of opposed edges;

preferably, wherein the central recess extends to a position deeper in the panel than the decorative layer;

Wherein the central recess is provided with a varnish layer (31); optionally, wherein the varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm;

preferably, wherein the thickness of the varnish layer of the central recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm,

preferably, at least a portion of the side edges (34) of the central recess are provided with the varnish layer.

5. The panel of claim 5, wherein the varnish layer of the central recess comprises segments parallel to the surface of the panel.

6. A panel according to any one of the preceding claims 4 to 5, wherein the visible width of the recess is the same as the visible width of the central recess in a condition of coupling at a first pair of opposed edges of two such panels.

7. Panel (1) according to any one of the preceding claims, wherein the concave edge (4) comprises a first closing plane (61), wherein the convex edge (3) comprises a second closing plane (62), wherein in a state in which two such panels are coupled at their first pair of opposite edges, a first closing plane of a first such panel contacts a second closing plane of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panel.

8. Panel according to any one of the preceding claims, wherein the varnish layer comprises sand and/or particles, preferably having a particle size of more than 20 μm, wherein at least a part of the sand and/or particles is present at the surface of the varnish layer; thereby preferably creating a rough surface of the recess.

9. Panel according to any one of the preceding claims, wherein the varnish is an acrylic varnish or a polyurethane acrylic varnish, preferably a UV-curable varnish.

10. A panel according to any one of the preceding claims, wherein the recess provided with the varnish layer is configured for providing a grout pattern in a covering comprising a plurality of such panels.

11. A panel according to any one of the preceding claims, wherein the visible width of the varnish layer of the recess is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm in the state in which two such panels are joined at their first pair of opposite edges; and preferably less than 5mm.

12. The panel (1) according to any one of the preceding claims,

wherein the panel comprises a second pair of opposite edges (5, 6);

Wherein the panels are provided with second coupling parts (27, 28) at said second pair of opposite edges, which substantially co-operate with each other in the form of a second male coupling part (27) and a second female coupling part (28) for coupling two such panels at their second pair of opposite edges in a floor, wall or ceiling covering;

wherein the second male coupling is provided at the second male edge (5) of the second pair of opposing edges;

wherein the second female coupling is provided at the second female edge (6) of the panel;

wherein said second coupling portion is provided with second mechanical locking means preventing separation of two such panels coupled at a second pair of opposite edges of two such panels in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupled panels;

wherein a surface of at least one of the second convex edge and the second concave edge is provided with a second recess (36);

preferably, wherein the second recess extends to a position deeper in the panel than the decorative layer;

Wherein the second recess is provided with a varnish layer (31) optionally comprising sand and/or particles preferably having a particle size of more than 20 μm;

wherein in a state in which such a panel is coupled with another such panel at their respective second pair of opposite edges, said varnish layer of said second recess is at least partially visible,

preferably, wherein the thickness of the varnish layer of the second recess is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm,

preferably, wherein at least a portion of a side edge (34) of the second recess (36) is provided with the varnish layer,

preferably, wherein the edge of the second pair of opposite edges (5, 6) opposite the edge comprising the second recess (36) is located at least above the segment provided with the varnish layer, preferably wherein the varnish layer at this edge contributes to providing a grout imitation of the joined panels.

13. The panel of claim 12, wherein a surface of the varnish layer of the second recess comprises a segment parallel to the surface of the panel.

14. Panel according to any one of claims 12 to 13, wherein the surface of the varnish layer (31) of the recess (30) and the surface of the varnish layer (31) of the second recess (36) are provided at the same depth from the panel surface.

15. Panel according to any one of the preceding claims 12 to 14, wherein the visible width of the recess (30) in the coupled condition at the first pair of opposite edges (3, 4) of two such panels is the same as the visible width of the second recess (36) in the coupled condition at the second pair of opposite edges of two such panels.

16. Panel according to any one of the preceding claims 12 to 15, wherein the panel comprises at least one second central recess (37) at a surface of the panel, wherein the second central recess is arranged parallel to the second recess (36) and parallel to the second pair of opposite edges (5, 6);

preferably, wherein the second central recess is provided midway between the second pair of opposed edges;

preferably, wherein the second central recess extends to a position in the panel deeper than the decorative layer;

wherein the second central recess is provided with a varnish layer, optionally comprising sand and/or particles preferably having a particle size of more than 20 μm,

preferably, wherein at least a portion of the side edges (34) of the second central recess is provided with the varnish layer (31).

17. The panel of claim 16, wherein the varnish layer of the second central recess comprises segments parallel to the surface of the panel.

18. A panel according to any one of the preceding claims 16 to 17, wherein the visible width of the second recess is the same as the visible width of the second central recess in a condition of coupling at a second pair of opposed edges of two such panels.

19. Panel according to any of the preceding claims 12-18, wherein the panel edge provided with the recess is joined with the panel edge provided with the second recess in a joint (38); wherein in the joint, the varnish layer (31) of the recess (30) continues without interruption to the varnish layer (31) of the second recess (36); preferably, the varnish layer of the recess and the varnish layer of the second recess have the same composition.

20. A panel (1),

wherein the panel comprises a base (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21),

wherein the panel comprises a first pair of opposite edges (3, 4));

wherein the first pair of opposing edges comprises a first edge (3) and a second edge (4);

Wherein said first edge is arranged to face and preferably contact said second edge of a second such panel when a plurality of such panels are mounted in a covering;

preferably, wherein the panel is provided for gluing to a surface to form a covering for the surface;

wherein a surface of at least one of the first edge and the second edge is provided with a recess (30),

preferably, wherein the recess extends to a position deeper in the panel than the decorative layer;

wherein the recess is provided with a varnish layer (31) optionally comprising sand and/or particles preferably having a particle size of more than 20 μm;

wherein the varnish layer of the recess is at least partially visible in a state in which the panel and the other panel are mounted at their respective first pair of opposite edges,

preferably, wherein the thickness of the varnish layer is less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm,

preferably, wherein at least a portion of a side edge (34) of the recess (30) is provided with the varnish layer (31),

preferably, wherein the edge of the first pair of opposite edges (3, 4) opposite the edge comprising the recess (30) is located at least above the segment provided with the varnish layer, preferably wherein the varnish layer at this edge contributes to providing a grout copy of the joined panels.

21. The panel of claim 20, wherein the surface of the varnish layer comprises segments parallel to the surface of the panel.

22. A panel according to any one of the preceding claims 20 to 21, wherein the recess extends into the base.

23. A panel according to any of the preceding claims 20-22, wherein the recess provided with the varnish layer is configured for providing a grout analog in a covering comprising a plurality of such panels.

24. A panel according to any one of claims 20 to 23, wherein the visible width of the varnish layer of the recess is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm in the state in which two such panels are mounted at their first pair of opposed edges; and preferably less than 5mm.

25. The panel according to any one of the preceding claims 20 to 24,

wherein the panel comprises a second pair of opposite edges (5, 6);

wherein the second pair of opposing edges comprises a third edge (5) and a fourth edge (6);

wherein said third edge is arranged to face and preferably contact said fourth edge of a third such panel when a plurality of such panels are mounted in a covering;

Wherein a surface of at least one of the third edge and the fourth edge is provided with a second recess (36),

wherein in a state in which such a panel is mounted with another such panel at their respective second pair of opposite edges, said varnish layer of said second recess (36) is at least partially visible,

preferably, wherein at least a portion of a side edge (34) of the second recess is provided with the varnish layer (31),

26. The panel of claim 25, wherein a surface of the varnish layer of the second recess comprises a segment parallel to a surface of the panel.

27. The panel of any of claims 25 to 26, wherein a surface of the varnish layer of the recess and a surface of the varnish layer of the second recess are disposed at the same depth from the panel surface.

28. A panel according to any one of the preceding claims 25 to 26, wherein the visible width of the recess in the mounted condition at the first pair of opposed edges of two such panels is the same as the visible width of the second recess in the mounted condition at the second pair of opposed edges of two such panels.

29. The panel according to any one of the preceding claims 25 to 28, wherein the panel comprises at least one second central recess (37) at a surface of the panel, wherein the second central recess is arranged parallel to the second recess and parallel to the second pair of opposite edges;

Wherein the second central recess is provided with a varnish layer (31) optionally comprising sand and/or particles preferably having a particle size of more than 20 μm,

preferably, at least a portion of the side edge (34) of at least one of said second central recesses is provided with said varnish layer.

30. Panel according to claim 29, wherein the varnish layer (31) of the second central recess comprises segments parallel to the surface of the panel.

31. A panel according to any one of the preceding claims 29 to 30, wherein the visible width of the second recess (36) is the same as the visible width of the second central recess (37) in a state of installation at the second pair of opposite edges (5, 6) of two such panels.

32. Panel according to any one of the preceding claims 20 to 31, wherein the panel comprises at least one central recess (33) at a surface of the panel, wherein the central recess is arranged parallel to the recess and to the first pair of opposite edges (3, 4);

Wherein the central recess is provided with a varnish layer (31) optionally comprising sand and/or particles preferably having a particle size of more than 20 μm;

preferably, at least a portion of the side edge of at least one of the central recesses is provided with the varnish layer.

33. Panel according to claim 32, wherein the varnish layer (31) of the central recess (33) comprises segments parallel to the surface of the panel.

34. A panel according to any one of the preceding claims 32 to 33, wherein the recess (30) has the same visible width as the central recess (33) in a mounted condition at a first pair of opposite edges (3, 4) of two such panels.

35. Panel according to any of the preceding claims 25-34, wherein the panel edge provided with the recess is joined with the panel edge provided with the second recess in a joint (38); wherein in the joint, the varnish layer of the recess continues without interruption into the varnish layer of the second recess; preferably, the varnish layer of the recess and the varnish layer of the second recess have the same composition.

36. Panel according to any of the preceding claims 20-35, wherein the first edge (3) comprises a first closing plane (61), wherein the second edge (4) comprises a second closing plane (62), wherein in a state in which two such panels are mounted at their first pair of opposite edges, the first closing plane of a first such panel contacts the second closing plane of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the mounted panel.

37. A panel according to any one of the preceding claims 20 to 36, wherein the first and second edges are free of a coupling that would provide a mechanical lock of two such panels when installed in a covering.

38. Panel according to any one of the preceding claims 20 to 37, wherein the varnish layer comprises sand and/or particles, preferably having a particle size of more than 20 μιη, wherein at least a portion of the sand and/or particles is present at the surface of the varnish layer; thereby preferably creating a rough surface of the recess.

39. Panel according to any of the preceding claims 20 to 38, wherein the varnish is an acrylic varnish or a polyurethane acrylic varnish, preferably a UV-curable varnish.

40. A panel (1),

wherein the panel comprises a base (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21),

wherein the panels are provided with coupling parts (7, 8) at a first pair of opposite edges (3, 4), which coupling parts cooperate with each other in the form of a substantially male coupling part (7) and a female coupling part (8) for coupling two such panels to each other at their first pair of opposite edges (3, 4) in a floor, wall or ceiling covering;

wherein the surface of at least one of the convex edge (3) and the concave edge (4) is provided with a recess (30) extending to a position deeper in the panel than the decorative layer (20),

Wherein the recess (30) comprises a polymer filler material (71),

wherein the polymeric filler material at least partially fills the recess,

wherein the polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer,

preferably, wherein the polymeric filler material has a thickness of greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm.

41. Panel according to any of the preceding claims 40, wherein the surface of the polymeric filler material (71) is at least partially and preferably parallel to the surface of the panel over its entire surface.

42. Panel according to any of the preceding claims 40-41, wherein the polymer filling material (71) provides a portion of the panel edge on which the polymer filling material is provided, preferably wherein the polymer filling material provides an edge on which the polymer filling material is provided, which edge is at a height of at least 0.1mm, and preferably at a height of at least 0.5 mm.

43. The panel of claim 42, wherein the portion of the panel edge provided by the polymeric filler material is a cut edge or a milled edge.

44. Panel according to any of the preceding claims 40-43, wherein the recess (30) comprising the polymer filling material (71) is configured for providing a grout simulation in a covering comprising a plurality of such panels.

45. A panel according to any one of the preceding claims 40 to 44, wherein the width of the recess provided with the polymeric filler material is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm.

46. Panel according to any of the preceding claims 40-45, wherein the panel comprises at least one central recess (33) on the surface of the panel, which central recess extends to a deeper position in the panel than the decorative layer (20),

wherein the central recess is arranged parallel to the recess and to the first pair of opposite edges (3, 4);

wherein the central recess comprises a third polymeric filler material (71),

wherein the third polymeric filler material at least partially fills the central recess, wherein the third polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer;

Preferably, wherein the composition of the third polymeric filler material is the same as the composition of the polymeric filler material,

preferably, wherein the thickness of the second polymeric filler material is greater than 400 μm, more preferably greater than 500 μm, more preferably greater than 700 μm.

47. Panel according to any one of the preceding claims 40 to 46, wherein the concave edge (4) comprises a first closing plane (61), wherein the convex edge (3) comprises a second closing plane (62), wherein in a state in which two such panels are coupled at their first pair of opposite edges (3, 4), the first closing plane (61) of a first such panel contacts the second closing plane (62) of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panel.

48. The panel of any one of the preceding claims 40 to 47, wherein the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy, or wherein the polymeric filler material comprises an acrylic adhesive.

49. A panel according to any one of the preceding claims 40 to 48, wherein the polymeric filler material comprises a pigment, preferably to provide the polymeric filler material as a grout dummy in the coupled panels.

50. Panel according to any one of the preceding claims 40 to 49, wherein the polymeric filler material comprises sand and/or particles preferably having a particle size of more than 20 μm; preferably, wherein the sand and/or the particles provide a roughened surface for the polymer filling material; and preferably wherein at least the sand and/or particles are provided at the surface of the polymer filling material.

51. The panel according to any one of the preceding claims 40 to 50,

wherein the panel comprises a second pair of opposite edges (5, 6);

wherein the panels are provided with second coupling parts (27, 28) at the second pair of opposite edges, which second coupling parts cooperate with each other in the form of substantially a second male coupling part (27) and a second female coupling part (28) for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering;

wherein the second male coupling is provided at the second male edge (5) in the panel;

wherein the second female coupling is provided at the second female edge (6) in the panel;

wherein said second coupling portion is provided with second mechanical locking means preventing separation of two such panels coupled at their second pair of opposite edges in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupled panels;

Wherein a surface of at least one of the second convex edge and the second concave edge is provided with a second recess (36) extending to a position deeper in the panel than the decorative layer (20),

wherein the second recess comprises a second polymer filler material (71),

wherein the second polymeric filler material at least partially fills the second recess,

wherein the second polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer,

52. A panel according to claim 51, wherein the second polymer filling material (71) provides a portion of the panel edge on which the second polymer filling material is provided, preferably wherein the second polymer filling material provides an edge on which the second polymer filling material is provided, which edge is at a height of at least 0.1mm, and preferably at a height of at least 0.5 mm.

53. The panel of claim 51, wherein the portion of the panel edge provided by the second polymeric filler material is a cut or milled edge.

54. The panel of any one of the preceding claims 51 to 53, wherein the polymeric filler material and the second polymeric filler material extend upwardly from the panel surface the same distance.

55. Panel according to any of the preceding claims 51 to 54, wherein the panel edge provided with the recess (30) is joined with the panel edge provided with the second recess (36) in a joint (38); wherein in the joint, the polymer filler material continues without interruption to the second polymer filler material; preferably, wherein the polymeric filler material and the second polymeric filler material have the same composition.

56. Panel according to any one of the preceding claims 51 to 55, wherein the visible width of the polymeric filler material in the state where two such panels are coupled at the first pair of opposite edges (3, 4) is the same as the visible width of the second polymeric filler material in the state where two such panels are coupled at the second pair of opposite edges.

57. The panel of any one of the preceding claims 51 to 56, wherein the composition of the second polymeric filler material is the same as the composition of the polymeric filler material.

58. The panel according to any one of the preceding claims 51 to 57, wherein the panel comprises at least one second central recess (37) at a surface of the panel, which extends to a position deeper in the panel than the decorative layer (20),

wherein at least one of said second central recesses is arranged parallel to said second recess (36) and to said second pair of opposite edges (5, 6);

preferably, wherein at least one of said second central recesses is provided midway between said second pair of opposed edges;

wherein at least one of said second central recesses comprises a fourth polymeric filler material (71),

wherein said fourth polymeric filler material at least partially fills at least one of said second central recesses,

wherein the fourth polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer;

Preferably, the composition of the fourth polymer filling material is preferably the same as the composition of the polymer filling material.

59. A panel (1),

wherein the panel comprises a base (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21),

wherein the panel comprises a first pair of opposite edges (3, 4);

wherein a surface of at least one of the first edge and the second edge is provided with a recess (30) extending to a position deeper in the panel than the decorative layer (20),

wherein the recess comprises a polymer filling material (71),

wherein the polymeric filler material at least partially fills the recess,

60. A panel according to any one of the preceding claims 59, wherein the surface of the polymeric filler material is at least partially and preferably parallel to the surface of the panel over its entire surface.

61. A panel according to any one of the preceding claims 59 to 60; wherein the polymeric filler material provides a portion of the panel edge on which the polymeric filler material is disposed, preferably wherein the polymeric filler material provides an edge on which the polymeric filler material is disposed that is at a height of at least 0.1mm, and preferably at a height of at least 0.5 mm.

62. The panel of claim 61, wherein the portion of the panel edge provided by the polymeric filler material is a cut or milled edge.

63. The panel according to any of the preceding claims 59 to 62, wherein the recess (30) comprising the polymer filling material (71) is configured for providing a grout simulation in a covering comprising a plurality of such panels.

64. A panel according to any one of the preceding claims 59 to 63, wherein the width of the recess provided with the polymer filling material is at least 1.5mm, preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm.

65. The panel according to any one of the preceding claims 59 to 64,

wherein the panel comprises a second pair of opposite edges (5, 6);

wherein a surface of at least one of the third edge and the fourth edge is provided with a second recess (36) extending to a position deeper in the panel than the decorative layer (20),

wherein the second recess (36) comprises a second polymer filler material (71),

66. A panel according to claim 65, wherein the second polymeric filler material provides a portion of the panel edge on which the second polymeric filler material is disposed, preferably wherein the second polymeric filler material provides an edge on which the second polymeric filler material is disposed, the edge being at a height of at least 0.1mm, and preferably at a height of at least 0.5 mm.

67. The panel of claim 66, wherein the portion of the panel edge provided by the second polymeric filler material is a cut or milled edge.

68. The panel of any one of the preceding claims 65 to 67, wherein the polymeric filler material and the second polymeric filler material extend upwardly from the panel surface the same distance.

69. The panel according to any one of the preceding claims 65 to 68, wherein the panel edge provided with the recess is joined with the panel edge provided with the second recess in a joint (38); wherein in the joint, the polymer filler material continues without interruption to the second polymer filler material; preferably, wherein the polymeric filler material and the second polymeric filler material have the same composition.

70. The panel of any one of the preceding claims 65 to 69, wherein the visible width of the polymeric filler material in a condition of being mounted at the first pair of opposed edges of two such panels is the same as the visible width of the second polymeric filler material in a condition of being coupled at the second pair of opposed edges of two such panels.

71. The panel of any one of the preceding claims 65 to 70, wherein the composition of the second polymeric filler material is the same as the composition of the polymeric filler material.

72. The panel according to any one of the preceding claims 59 to 71, wherein the panel comprises at least one central recess (33) at a surface of the panel, which central recess extends to a position deeper in the panel than the decorative layer (20),

wherein the central recess (33) is arranged parallel to the recess and parallel to the first pair of opposite edges;

wherein the central recess (33) comprises a third polymeric filler material (71),

wherein the third polymeric filler material at least partially fills the central recess,

Wherein the third polymeric filler material extends vertically in the panel from a position below the position of the decorative layer to a position vertically above the position of the decorative layer;

73. The panel according to any one of the preceding claims 65 to 72, wherein the panel comprises at least one second central recess (37) at the surface of the panel, which extends to a position deeper in the panel than the decorative layer (20),

wherein at least one of said second central recesses (33) comprises a fourth polymeric filler material (71),

preferably, the composition of the fourth polymer filling material is the same as the composition of the polymer filling material.

74. Panel according to any one of the preceding claims 59 to 73, wherein the first edge (3) comprises a first closing plane (61), wherein the second edge (4) comprises a second closing plane (62), wherein in a state in which two such panels are mounted at their first pair of opposite edges (3, 4), the first closing plane (61) of a first such panel contacts the second closing plane (62) of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the mounted panel.

75. A panel according to any one of the preceding claims 59 to 74, wherein the first and second edges are free of a coupling that would provide a mechanical lock of two such panels when mounted in a covering.

76. A panel according to any one of the preceding claims 59 to 75, wherein the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy resin, or wherein the polymeric filler material comprises an acrylic adhesive.

77. A panel according to any one of the preceding claims 59 to 76, wherein the polymer filler material comprises a pigment, preferably to provide the polymer filler material as a grout dummy in a coupled panel.

78. A panel according to any one of the preceding claims 59 to 77, wherein the polymeric filler material comprises sand and/or particles preferably having a particle size of greater than 20 μm; preferably, wherein the sand and/or the particles provide a roughened surface for the polymer filling material; and preferably wherein at least the sand and/or particles are provided at the surface of the polymer filling material.

79. A panel (1) comprising a substrate (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21),

wherein the male edge (3), preferably the male coupling (7), comprises a section (40) with an upper surface arranged below the surface of the floor panel and below the location of the decor layer,

preferably, wherein the upper surface of the segment is provided with a substantially uniform color;

preferably, wherein the visual appearance of the upper surface of the segment differs from the visual appearance of the decorative layer over its entire surface,

wherein in the coupled state of a first such panel coupled at its male edge (3) to the female edge (4) of a second such panel, the female edge overlaps a portion of the upper surface of the segment of the male edge of the first such panel such that in a view perpendicular to the surface of the coupled panel, a portion (41) of the upper surface of the segment of the male edge of the first such panel is hidden from view and a portion (42) of the upper surface of the segment is visible,

Preferably, wherein the portion of the upper surface of the segment that is visible in a view perpendicular to the surface of the coupled panel is at least 1.5mm wide, more preferably at least 2mm wide, more preferably at least 3mm wide, more preferably greater than 3.5mm wide, and preferably less than 5mm wide.

80. A panel according to claim 79, wherein at least a portion of the upper surface of the segment, preferably the entire upper surface, visible in a view perpendicular to the surface of the coupled panel, is parallel to the surface of the floor panel.

81. The panel according to any of the preceding claims 79 to 80, wherein the convex edge and the concave edge each comprise a chamfer (51).

82. Panel according to claim 81, wherein the chamfer (51) at the convex edge (3) and at the concave edge (4) is a convex chamfer, preferably wherein the chamfer edge is partially or fully curved.

83. The panel according to any one of the preceding claims 81 to 82, wherein the chamfer (51) at the convex edge (3) is substantially a mirror image of the chamfer (51) at the concave edge (4).

84. Panel according to any one of the preceding claims 81 to 83, wherein the chamfer (51) has an irregular section along the edge.

85. The panel according to any one of the preceding claims 79 to 84, wherein in a first region (43) of the upper surface of the male coupling portion, the female edge (4) of a second such panel contacts the upper surface of the segment (40) of the male edge (3) of a first such panel, wherein the segment is provided below the surface of the floor panel and below the location of the decorative layer;

and wherein the upper surface of the male edge, preferably of the male coupling, comprises a second region (44) which is not distal to the first region, wherein the female edge (4) of a second such panel overlaps the second region (44) without being in contact with the second region, but such that the second region (44) is hidden from view.

86. The panel of claim 85, wherein the second region (44) is further from a surface of the floor panel than the first region (43).

87. The panel according to any one of the preceding claims 79 to 86, wherein at least one recess (30) is provided on a surface of the panel parallel to the first pair of opposite edges (3, 4),

wherein at least one of said recesses is defined by the surface of said panel at both sides parallel to said first pair of opposite edges,

Wherein the bottom of the recess has substantially the same color as the portion of the upper surface of the segment of the convex edge that is visible in a view perpendicular to the surface of the coupled panel.

88. The panel according to claim 87, wherein the depth of at least one recess (30) is substantially the same as the distance of the segment (40) of the convex edge from the surface of the panel.

89. The panel according to any one of the preceding claims 87 to 88, wherein the male edge (3) and the female edge (4) each comprise a bevel (51),

wherein the sides of at least one of said recesses (30) parallel to said first pair of opposite edges are provided with bevels (51) having substantially the same configuration as the bevels (51) of said male edge (3) and said female edge (4), respectively.

90. Panel according to any of the preceding claims 79 to 89, wherein at least a part of the segment (40) of the convex edge is provided with a varnish layer (31), wherein the upper surface of the convex edge is provided below the surface of the floor panel and below the position of the decorative layer;

and preferably when the male edge (3) and the female edge (4) are provided with bevels (51), wherein these bevels are at least partially provided with the same varnish layer (31), more preferably wherein the varnish layer on the bevels extends from below the decorative layer (20), more preferably from the bottom of the bevel, to a position above the decorative layer (20).

91. A panel according to claim 90, wherein the varnish layer comprises sand and/or particles preferably having a particle size of more than 20 μm.

92. The panel of claim 91, wherein at least a portion of the sand and/or particles are present at a surface of the varnish layer; thereby preferably creating a rough surface of the recess.

93. The panel according to any of the preceding claims 90 to 92, wherein the varnish is an acrylic varnish, a polyurethane varnish or a polyurethane acrylic varnish, preferably a UV curable varnish.

94. The panel according to any one of the preceding claims 85 to 89 and any one of the preceding claims 90 to 93, wherein the first area (43) does not comprise the varnish layer.

95. The panel according to any of the preceding claims 79 to 94, wherein the coupling at the first pair of opposite edges (3, 4) is configured such that in a state in which such panel is coupled with another such panel at its respective edge of the first pair of opposite edges (3, 4), the mechanical locking means preventing the locked panels from separating in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panels prevents said separation while allowing a play of at least 0.2mm and preferably less than 0.5mm in this direction.

96. A panel according to claim 95, wherein said allowing said play is made possible at least in part by elastic deformation of at least one of said coupling parts, preferably of said female coupling part; or wherein said play does not require elastic deformation of at least one of said coupling parts.

97. A panel according to any one of the preceding claims 95 to 96, wherein the allowed play is made possible at least in part by the relative position in a direction perpendicular to the first pair of opposed edges parallel to the surfaces of the panel to which they are coupled at the first pair of opposed edges of the overlap of the concave edges of the upper surface of the segment of the convex edge; preferably, wherein the overlapping sections of the convex edges are parallel to the surface of the panel.

98. The panel according to any of the preceding claims 79 to 96, wherein the portion (42) of the upper surface of the segment visible in a view perpendicular to the surface of the coupled panel is configured for providing a grout simulation in a covering comprising a plurality of such panels.

99. The panel according to any one of the preceding claims 87 to 98,

Wherein the panel comprises a second pair of opposite edges (5, 6);

wherein the second male coupling (27) is provided at the second male edge (5) of a second pair of opposite edges;

wherein the second female coupling (28) is provided at the second female edge (6) of the panel;

wherein the second male edge, preferably the second male coupling, comprises a section (40) with an upper surface arranged below the surface of the floor panel and below the position of the decor layer,

Preferably, wherein the upper surface of the segment of the second convex edge is provided with a substantially uniform color;

preferably, wherein the visual appearance of the upper surface of the segment (40) of the second convex edge differs from the visual appearance of the decorative layer over its entire surface,

wherein in a coupled state in which a first such panel is coupled at its second convex edge to said second concave edge of a third such panel, said second concave edge of the third such panel overlaps a portion of the upper surface of said segment (40) of said second convex edge of the first such panel such that in a view perpendicular to the surface of the coupled panel, a portion (41) of the upper surface of said segment of said second convex edge of the first such panel is hidden from view while a portion (42) of the upper surface of said segment of said second convex edge of the first such panel is visible,

preferably, wherein the portion of the upper surface of the segment of the second convex edge visible in a view perpendicular to the surface of the coupled panel is at least 1.5mm wide, more preferably at least 2mm wide, more preferably at least 3mm wide, more preferably greater than 3.5mm wide, and preferably less than 5mm wide.

100. A panel according to claim 99, wherein at least a portion, preferably the entire upper surface, of the upper surface of the segment of the second convex edge, visible in a view perpendicular to the surfaces of the coupled first and third such panels, is parallel to the surface of the panel.

101. Panel according to any one of the preceding claims 99 to 100, wherein the second convex edge (5) and the second concave edge (6) each comprise a bevel (51).

102. The panel according to claim 101, wherein the slope of the second convex edge (51) and the slope of the second concave edge are convex slopes, preferably wherein the slope edge is partially or fully curved.

103. Panel according to any of the preceding claims 101 to 102, wherein the bevel (51) at the second convex edge is substantially a mirror image of the bevel (51) of the second concave edge.

104. Panel according to any one of the preceding claims 100 to 103, wherein the chamfer (51) has an irregular cross section along the edge.

105. The panel of any one of the preceding claims 99 to 104, wherein the distance of the segment of the male coupling edge from the surface of the panel and the distance of the segment of the second male edge from the surface of the panel are substantially the same.

106. The panel of any one of claims 99 to 105, wherein a portion of an upper surface of the segment of the male edge visible in a view perpendicular to a surface of the coupled panel has substantially the same color as a portion of an upper surface of the segment of the second male edge visible in a view perpendicular to a surface of the coupled panel.

107. The panel according to any one of the preceding claims 99 to 106, wherein in a first region (43) of the upper surface of the second convex edge, the second concave edge (6) of a third such panel contacts the upper surface of the segment (40) of the second convex edge of a first such panel, wherein the segment is provided below the surface of the floor panel and below the location of the decorative layer;

and wherein the upper surface of the second male edge (5), preferably of the second male coupling, comprises a second region (44) which is not distal to the first region, wherein the second female edge of a third such panel overlaps with the second region without touching the second region, but such that the second region is hidden from view.

108. The panel according to claim 107, wherein the second region (44) of the second male edge is further from the surface of the floor panel than the first region (43) of the second male coupling.

109. A panel according to any one of claims 99 to 108, wherein the coupling at the second pair of opposed edges is configured such that in a state in which such panel is coupled with another such panel at its respective edge of the second pair of opposed edges, the mechanical locking means preventing separation of locked panels in a direction perpendicular to the second pair of opposed edges and parallel to the surfaces of the coupled panels prevents said separation while allowing a play of at least 0.2mm and preferably less than 0.5mm in that direction.

110. A panel according to claim 109, wherein said allowing said play in a direction perpendicular to said second pair of opposite edges and parallel to the surface of the coupled panel is made possible at least in part by elastic deformation of at least one of a plurality of said second coupling parts, preferably said second female coupling parts; or wherein the play does not require elastic deformation of at least one of the plurality of coupling portions.

111. A panel according to any one of the preceding claims 99 to 110, wherein the allowance of the play in a direction perpendicular to the second pair of opposing edges and parallel to the surfaces of the coupled panels is made possible at least in part by the relative position in a direction perpendicular to the first pair of opposing edges parallel to the surfaces of the panels coupled at their second pair of opposing edges of the overlapping portion of the second concave edges of the upper surface of the segment of the second convex edge.

112. Panel according to any of the preceding claims 79-111, wherein not the male edge but the female edge, preferably the female coupling, comprises a section (40), the upper surface of which is provided below the surface of the floor panel and below the location of the decor layer,

wherein, in a coupled state in which a first such panel is coupled at its convex edge to a concave edge of a second such panel, not the concave edge overlaps but the convex edge overlaps a portion of an upper surface of the segment of the concave edge of the first such panel such that in a view perpendicular to the surface of the coupled panel, a portion (41) of the upper surface of the segment of the concave edge of the first such panel is hidden from view and a portion (42) of the upper surface of the segment is visible.

113. Panel according to any of the preceding claims 1-19 or 40-58 or 79-111 or 112, wherein the male edge (3) comprises a tongue (53) providing the male coupling (7), wherein the female edge (4) comprises a groove (54) providing the female coupling (8), wherein the tongue preferably extends in a direction parallel to the panel surface,

wherein the recess is delimited by an upper lip (55) and a lower lip (56), preferably wherein the lower lip extends further than the upper lip.

114. The panel according to claim 113, wherein the lower lip (56) comprises a locking element (13), and wherein the bottom of the tongue (53) comprises a locking element (14), wherein in a state in which two such panels are coupled at their first pair of opposite edges, the locking element of the lower lip contacts the locking element of the tongue, thereby establishing a locking of the coupled panels at the first pair of opposite edges of the coupled panels in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

115. The panel according to claim 114, wherein the locking element (13) of the lower lip (56) is arranged distally of the distal end of the upper lip (55).

116. The panel of any one of claims 113 to 115, wherein in a state in which two such panels are coupled at their first pair of opposed edges, the bottom of the tongue contacts the upper surface of the lower lip at least two different segments separated by a gap.

117. The panel according to any one of the preceding claims 113 to 116, wherein the coupling portions of the first pair of opposite edges (3, 4) are configured such that a first such panel can couple a male edge of a first such panel into a female edge of a second such panel with a snap action by means of a tilting movement (W) and/or by means of a substantially horizontal sliding movement.

118. A panel according to any one of the preceding claims 114 to 117 and any one of the preceding claims 1 to 19 or 40 to 58; wherein the recess (30) is provided at the convex edge (3); wherein the recess extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposing edges by at least half of the distance between the distal end of the recess and the middle of the segment of the locking element of the lower lip that contacts the locking element of the tongue in the state in which two such panels are coupled at their first pair of opposing edges; and is also provided with

More preferably, wherein the recess extends at least vertically above the locking element of the lower lip in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges, the locking element of the lower lip contacting the locking element of the tongue in a state in which two such panels are coupled at their first pair of opposite edges.

119. A panel according to any one of the preceding claims 114 to 117 and any one of the preceding claims 1 to 19 or 40 to 58; wherein the recess (30) is provided at the concave edge (4); wherein the recess extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges by at least half of the distance between the distal end of the recess and the proximal end of the groove;

more preferably, wherein the recess extends in a proximal direction beyond the proximal end of the groove in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges.

120. The panel according to any one of the preceding claims 114 to 117 and any one of the preceding claims 79 to 111;

Wherein the portion of the upper surface of the segment (42) of the male edge that is visible in a view perpendicular to the surface of the coupled panel extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges at least half of the distance between the distal end of the tongue (53) and the middle of the segment of the locking element of the lower lip (56) that brings two such panels into contact with the locking element (14) of the tongue in a state in which they are coupled at their first pair of opposing edges; and is also provided with

More preferably, wherein a portion (42) of the upper surface of the segment of the male edge visible in a view perpendicular to the surface of the coupled panel extends proximally over at least the locking elements of the lower lip in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges, the locking elements of the lower lip contacting the locking elements of the tongue in a state in which two such panels are coupled at their first pair of opposite edges.

121. The panel according to any one of the preceding claims 1 to 19 or 40 to 58 or 79 to 111 or 112, wherein the convex edge (3) comprises a downwardly directed upper hook (64); wherein the downwardly directed upward hook (64) comprises, and preferably consists of, a lip (65) having a downwardly directed locking element (66) forming the male coupling (7);

Wherein the concave edge (4) comprises an upwardly directed downward hook (67); wherein said upwardly directed downwardly hook (67) comprises, and preferably consists of, a lip (68) having an upwardly directed locking element (69) defining said female coupling (8) in the form of a coupling recess (72) on its proximal side;

wherein the male coupling portion and the female coupling portion are configured such that a first such panel and a second such panel can be coupled to each other at their respective first pair of opposing edges by a movement (M) substantially perpendicular to the surfaces of the first such panel and the second such panel.

122. The panel according to claim 121, wherein the edges (3, 4) of said first pair of opposite edges are provided with mechanical locking means such that in the coupled state of a first such panel coupled to a second such panel at its first pair of opposite edges, a locking perpendicular to the surface of the panel is provided at the distal end of the downwardly directed locking element of the panel.

123. Panel according to claims 121-122, wherein the locking means comprise an undercut (73) at the concave edge (4), wherein the undercut is provided for interacting with the downwardly directed locking element (66) of the coupled panel, preferably for interacting with a locking element (81) at the distal end of the downwardly directed locking element (66), thereby establishing a lock perpendicular to the surface of the panel at the distal end of the downwardly directed locking element (66) of the panel.

124. The panel of claim 121, wherein the first pair of opposing edges are configured such that in a state in which two such panels are coupled at their first pair of opposing edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element.

125. The panel according to any one of the preceding claims 121 to 124, wherein no locking in a direction perpendicular to the surfaces of the panels coupled at the first pair of opposite edges of the panel is provided at both the proximal end of the upwardly directed locking element (69) and the proximal end of the downwardly directed locking element (66).

126. The panel according to any one of the preceding claims 121 to 124, wherein the proximal end of the downwardly directed locking element (66) comprises a first inclined contact surface (74); wherein the proximal end of the upwardly directed locking element (69) comprises a second inclined contact surface (75); wherein in a condition in which two such panels are coupled at their first pair of opposite edges (3, 4), said first inclined contact surface (74) of a first such panel contacts said second inclined contact surface (75) of a second such panel; thereby establishing locking of the coupled panels in a direction perpendicular to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

127. The panel according to any one of the preceding claims 121 to 126, wherein the first pair of opposite edges (3, 4) is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element (69); wherein the lock is provided with or without contact.

128. The panel according to claim 127, wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76) or a protrusion (77), wherein a bottom surface of the undercut or the protrusion is provided for establishing a lock in a direction perpendicular to the surface of the coupled panel.

129. The panel according to any one of the preceding claims 121 to 128, wherein the upwardly directed locking element (69) contacts a proximal end of the edge of the panel coupled with the upwardly directed locking element at a distal end of the upwardly directed locking element (69); and/or

Wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76), and the upwardly directed locking element (69) contacts the proximal end of the edge of the panel to which the upwardly directed locking element is coupled at the undercut (76) of the upwardly directed locking element;

Thereby establishing a lock in a direction perpendicular to the surface of the coupled panel.

130. The panel according to any one of the preceding claims 127 to 129, wherein the proximal end of the male edge comprises a corresponding hook (78), wherein the corresponding hook is arranged for interaction with the upwardly directed locking element (69) of the coupled panel to establish locking in a direction perpendicular to the surface of the coupled panel.

131. The panel according to any one of the preceding claims 121 to 126, wherein the first pair of opposite edges (3, 4) is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element (69).

132. The panel according to any one of the preceding claims 121 to 132, according to any one of the preceding claims 1 to 19 or 40 to 58; wherein the recess (30) is provided at the convex edge (3); wherein the recess (30) extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposite edges for at least half of the distance between the distal end of the recess (30) and the middle of the segment of the proximal end of the downwardly directed locking element (66) that in the coupled state will contact the proximal end of the upwardly directed locking element (69);

Preferably, wherein the recess extends in a proximal direction beyond the proximal end of the downwardly directed locking element (66) in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges.

133. The panel according to any one of the preceding claims 121 to 132, according to any one of the preceding claims 1 to 19 or 40 to 58; wherein the recess (30) is provided at the concave edge (4), wherein the width of the recess is at least 30% of the thickness of the panel, preferably at least 40% of the thickness of the panel, more preferably at least 60% of the thickness of the panel; and preferably less than 100% of the thickness of the panel.

134. The panel according to any one of the preceding claims 121 to 131 and any one of the preceding claims 79 to 111;

wherein a portion (42) of an upper surface of the segment of the male edge visible in a view perpendicular to a surface of the coupled panel extends in a proximal direction in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges for at least half of a distance between a distal end of the coupling recess (72) and a middle of the segment of a proximal end of the downwardly directed locking element (66) that in a coupled state will contact a proximal end of the upwardly directed locking element (69);

Preferably, wherein a portion (42) of an upper surface of the segment of the male edge visible in a view perpendicular to a surface of the coupled panel extends in a proximal direction beyond a proximal end of the downwardly directed locking element (66) in a direction parallel to the surface of the panel and perpendicular to the first pair of opposing edges.

135. Panel according to any of the preceding claims 12-19 or 51-58 or 99-111 or 112, wherein the second male edge (5) comprises a second tongue (53) providing the second male coupling (27), wherein the second tongue preferably extends in a direction parallel to the panel surface,

wherein the second concave edge (8) comprises a second groove (54) providing the second concave coupling (28),

wherein the second recess (54) is delimited by a second upper lip (55) and a second lower lip (56), preferably wherein the second lower lip (56) extends further than the second upper lip (55).

136. The panel according to claim 135, wherein the second lower lip (56) comprises a second locking element (13), and wherein the bottom of the second tongue (53) comprises a second locking element (14), wherein in a state in which two such panels are coupled at their second pair of opposite edges (5, 6), the second locking element (14) of the second lower lip contacts the second locking element (13) of the second tongue, thereby establishing a locking of the coupled panels in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panels at the second pair of opposite edges of the coupled panels; preferably, wherein the locking is established by pretensioning.

137. The panel according to claim 136, wherein the second locking element (14) of the second lower lip (56) is disposed distally of the distal end of the second upper lip (55).

138. The panel according to any one of the preceding claims 135 to 137, wherein, in the condition in which two such panels are coupled at their second pair of opposite edges, the bottom of the second tongue (53) is in contact with the upper surface of the second lower lip (56) at least two distinct segments separated by a gap.

139. The panel of any one of the preceding claims 135 to 138, wherein the coupling portions of the second pair of opposing edges are configured such that a first such panel can couple the second male edge of a first such panel into the second female edge of a third such panel with a snap action by a diagonal movement and/or by a substantially horizontal sliding movement.

140. The panel according to any one of the preceding claims 12 to 19 or 51 to 58 or 99 to 111 or 112, wherein the second convex edge (5) comprises a second downwardly directed upper hook (64); wherein the second downwardly directed upwards hook (64) comprises, and preferably consists of, a lip (65) having a second downwardly directed locking element (66) forming the second male coupling (27);

Wherein the second concave edge (6) comprises a second upwardly directed downward hook (67); wherein the second upwardly directed downward hook (67) comprises, and preferably consists of, a lip (68) with a second upwardly directed locking element (69), the second female coupling (28) in the form of a second coupling recess (72) being defined proximally of the second upwardly directed locking element; wherein the second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposing edges by a movement (M) substantially perpendicular to the surfaces of the two such panels.

141. A panel according to claim 140, wherein the edges of the second pair of opposite edges (5, 6) are provided with mechanical locking means such that in a state in which a first such panel is coupled to a third such panel at their second pair of opposite edges, locking perpendicular to the surface of the panel is provided at the distal end of the second downwardly directed locking element (66) of the panel.

142. Panel according to claims 140 to 141, wherein the locking means comprises a second undercut (73) at the second concave edge, wherein the second undercut is provided for interacting with the second downwardly directed locking element (66) of the coupled panel, preferably for interacting with a locking element (81) at the distal end of the second downwardly directed locking element (66), thereby establishing a lock perpendicular to the surface of the panel at the distal end of the second downwardly directed locking element of the panel.

143. The panel according to claim 140, wherein the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element (69).

144. The panel according to any one of the preceding claims 140 to 143, wherein no locking in a direction perpendicular to the surface of the panel between the panels coupled at their second pair of opposite edges is provided at either the proximal end of the second upwardly directed locking element (69) or the proximal end of the second downwardly directed locking element (66).

145. The panel according to any one of the preceding claims 140 to 143, wherein the proximal end of the second downwardly directed locking element (66) comprises a third inclined contact surface (74); wherein the proximal end of the second upwardly directed locking element (69) comprises a fourth inclined contact surface (75); wherein in a coupled state in which two such panels are coupled at their second pair of opposing edges, said third inclined contact surface of a first such panel contacts said fourth inclined contact surface of a third such panel; thereby establishing locking of the coupled panels in a direction perpendicular to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

146. The panel according to any one of the preceding claims 140 to 145, wherein the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the second upwardly directed locking element (69); wherein the lock is provided with or without contact.

147. The panel according to claim 146, wherein the distal end of the second upwardly directed locking element (69) comprises a second undercut (76) or a second protrusion (77), wherein a bottom surface of the second undercut or a bottom surface of the second protrusion is provided for establishing a lock in a direction perpendicular to a surface of the coupled panel.

148. The panel according to any one of the preceding claims 140 to 147, wherein the second upwardly directed locking element (69) contacts a proximal end of the edge of the panel coupled thereto at a distal end of the second upwardly directed locking element (69); and/or

Wherein the distal end of the second upwardly directed locking element (69) comprises a second undercut and the second upwardly directed locking element contacts the proximal end of the edge of the panel to which the second upwardly directed locking element is coupled at the second undercut of the second upwardly directed locking element;

149. The panel according to any one of the preceding claims 146 to 148, wherein the proximal end of the second male edge comprises a second corresponding hook (78), wherein the second corresponding hook is arranged for interaction with the second upwardly directed locking element (69) of the coupled panel to establish locking in a direction perpendicular to the surface of the coupled panel.

150. The panel according to any of the preceding claims 140 to 145, wherein the second pair of opposite edges is configured such that in a state in which two such panels are coupled at their first pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element (69).

151. The panel of any one of the preceding claims 113 to 120 and 140 to 150, wherein the coupling portions of the first and second pairs of opposing edges are configured such that a plurality of such panels can be mounted into a covering by a folded-down mounting method.

152. A panel (1) comprising a substrate (10) and a top layer (11),

Wherein the top layer comprises a decorative layer (20) and a wear layer (21),

wherein the panels are provided at a first pair of opposite edges (3, 4) with coupling parts (7, 8) which cooperate with each other in the form of substantially tongues (53) and grooves (54) for coupling two such panels to each other at their first pair of opposite edges in a floor, wall or ceiling covering;

wherein the tongue (53) is provided at a convex edge (3) of the first pair of opposite edges; preferably, wherein the tongue (53) extends at the convex edge in a direction parallel to the panel surface,

wherein the groove (54) is provided at a concave edge (4) of the first pair of opposite edges; wherein the recess (54) is delimited by an upper lip (55) and a lower lip (56), preferably wherein the lower lip extends further than the upper lip;

wherein the coupling is provided with mechanical locking means preventing the two coupled panels from separating in a plane parallel to the coupled panels in a direction perpendicular to the respective coupling edge and in a direction perpendicular to the panel surface;

wherein the surface of the convex edge (3) is provided with a recess (30),

Preferably, wherein the recess extends to a position deeper in the panel than the decorative layer (20);

preferably, wherein the recess has a width of at least 1.5mm, more preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm;

wherein the panel comprises a second pair of opposite edges (5, 6);

wherein the second male coupling (27) is provided at the second male edge (5) of the second pair of opposing edges;

wherein the second female coupling (28) is provided at the second female edge of the panel (6);

wherein said second coupling portion is provided with second mechanical locking means preventing separation of two such panels coupled at their second pair of opposite edges (5, 6) in a direction perpendicular to the surface of the coupled panels and in said plane parallel to the coupled panels in a direction perpendicular to the respective coupling edges;

Wherein the second convex edge (5) comprises a downwardly directed upper hook (64); wherein said downwardly directed upward hook comprises, and preferably consists of, a lip (65) having a downwardly directed locking element (66) forming said second male coupling portion (27);

wherein the second concave edge (6) comprises an upwardly directed downward hook (67); wherein said upwardly directed downward hook comprises, and preferably consists of, a lip (68) with an upwardly directed locking element (69) defining said second female coupling portion (28) in the form of a coupling recess (72) proximally thereof;

wherein the second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposing edges by a movement (M) substantially perpendicular to the surfaces of the first such panel and the second such panel;

wherein the coupling portions of the first pair of opposite edges (3, 4) and the second coupling portions of the second pair of opposite edges (5, 6) are configured such that a plurality of such panels can be coupled into a covering using a folded-down mounting method,

Wherein the surface of the second concave edge (6) or the surface of the second convex edge (5) is provided with a second recess (36),

preferably, wherein the second recess (36) extends to a position deeper in the panel than the decorative layer (20);

preferably, wherein the width of the second recess is at least 1.5mm, more preferably at least 2mm, more preferably at least 3mm, more preferably at least 3.5mm; and preferably less than 5mm;

preferably, the width of the second recess is substantially the same as the width of the recess.

153. The panel according to claim 152, wherein the lower flange (56) comprises a locking element (13), and wherein the bottom of the tongue (53) comprises a locking element (14), wherein in a state in which two such panels are coupled at their first pair of opposite edges, the locking element (13) of the lower lip contacts the locking element (14) of the tongue, establishing a locking of the coupled panels at their first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

154. The panel according to claim 153, wherein the locking element (13) of the lower lip (56) is arranged distally of the distal end of the upper lip (55);

preferably, wherein the recess (30) extends in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges (3, 4) for at least half of the distance between the distal end of the recess (30) and the middle of the segment of the locking element (13) of the lower lip (56) that would contact the locking element (14) of the tongue (53) in the state in which two such panels are coupled at their first pair of opposite edges (3, 4);

more preferably, wherein the recess (30) extends at least vertically above the locking element (13) of the lower lip (56) in a proximal direction in a direction parallel to the surface of the panels and perpendicular to the first pair of opposite edges (3, 4), the locking element of the lower lip will contact the locking element (14) of the tongue (53) in a state in which two such panels are coupled at their first pair of opposite edges (3, 4).

155. The panel according to any one of the preceding claims 152 to 154, wherein, in the condition in which two such panels are coupled at their first pair of opposite edges, the bottom of the tongue (53) is in contact with the upper surface of the lower lip (56) at least two different segments separated by a gap.

156. The panel according to any one of the preceding claims 152 to 155, wherein said coupling of said first pair of opposite edges (3, 4) is configured such that a first such panel can couple a male edge (3) of a first such panel into said female edge of a second such panel by means of a diagonal movement (W).

157. The panel according to any one of the preceding claims 152 to 156,

wherein the proximal end of the second concave edge (6) of the second pair of opposite edges (5, 6) comprises a third closing plane (61), wherein the distal end of the second convex edge (5) of the second pair of opposite edges comprises a fourth closing plane (62), wherein in a state in which two such panels are coupled at their second pair of opposite edges, the third closing plane (61) of a first such panel contacts the fourth closing plane (62) of a third such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panel, wherein the edges of the second pair of opposite edges (5, 6) are provided with mechanical locking means such that in a state in which a first such panel is coupled with a third such panel at their second pair of opposite edges, a contact area is established between the mechanical locking means, thereby providing a locking of the perpendicular surface of the panels at the distal end of the downwardly directed locking element of the panel (66);

Preferably, wherein the extension of the contact surface intersects the contact area between the mechanical locking means.

158. The panel according to claim 157, wherein the locking means comprises an undercut (73) at the second concave edge, wherein the undercut interacts with the downwardly directed locking element (66) of the coupled panel, preferably with a locking element (81) at the distal end of the second downwardly directed locking element (66), thereby establishing a lock perpendicular to the surface of the panel at the distal end of the downwardly directed locking element (66) of the panel.

159. The panel according to any one of the preceding claims 152 to 156, wherein at the second pair of opposite edges (5, 6) no locking in a direction perpendicular to the surface of the coupled panel is established between the distal end of the second male edge (5) and the proximal end of the second female edge (6).

160. The panel according to any one of the preceding claims 152 to 159, wherein no locking in a direction perpendicular to the surface of the panel coupled at the second pair of opposite edges (5, 6) of the panel is provided at either the proximal end of the upwardly directed locking element (69) or the proximal end of the downwardly directed locking element (66).

161. The panel according to any one of the preceding claims 152 to 159, wherein the proximal end of the downwardly directed locking element (66) comprises a first inclined contact surface (74); wherein the proximal end of the upwardly directed locking element (69) comprises a second inclined contact surface (75); wherein in a state in which two such panels are coupled at their second pair of opposite edges, a first inclined contact surface (74) of a first such panel contacts a second inclined contact surface (75) of a third such panel; thereby establishing locking of the coupled panels in a direction perpendicular to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

162. The panel according to any one of the preceding claims 152 to 161, wherein the second pair of opposite edges (5, 6) is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element (69); wherein the lock is provided with or without contact.

163. The panel according to claim 162, wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76) or a protrusion (77), wherein a bottom surface of the undercut (76) or a bottom surface of the protrusion (77) is provided for establishing a lock in a direction perpendicular to a surface of the coupled panel.

164. The panel according to any one of the preceding claims 152 to 163, wherein the upwardly directed locking element (69) contacts a proximal end of the edge of the panel coupled with the upwardly directed locking element at a distal end of the upwardly directed locking element (69); and/or

Wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76), and the upwardly directed locking element (69) contacts the proximal end of the edge of the panel to which the upwardly directed locking element is coupled at the undercut of the upwardly directed locking element;

165. The panel according to any one of the preceding claims 162 to 164, wherein the proximal end of the second male edge (5) comprises a corresponding hook (78), wherein the corresponding hook is arranged for interaction with the upwardly directed locking element (69) of the coupled panel to establish locking in a direction perpendicular to the surface of the coupled panel.

166. The panel according to any of the preceding claims 152 to 161, wherein the second pair of opposite edges (5, 6) is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, no locking in a direction perpendicular to the surface of the coupled panels is provided at the distal end of the upwardly directed locking element (69).

167. Panel according to any one of the preceding claims 152 to 166, wherein the recess (30) and the second recess (36) are provided with a varnish layer (31), wherein the varnish layer of the recess is at least partially visible in the state in which such panel is coupled with another such panel at their respective first pair of opposite edges,

wherein the varnish layer of said second recess is at least partially visible in the state in which such a panel is coupled with another such panel at their respective second pair of opposite edges,

preferably, wherein both varnish layers (31) have a thickness of less than 200 μm, more preferably less than 100 μm, even more preferably less than 60 μm,

preferably, wherein at least a portion of a side edge (34) of the recess (30) and at least a portion of a side edge of the second recess (36) are provided with the varnish layer;

preferably, wherein the panel edge opposite the edge comprising said recess (30) and the panel edge opposite the edge comprising said second recess (36) are at least on the segment provided with the varnish layer, preferably wherein the varnish layer at this edge contributes to providing a grout copy of the coupled panels.

168. Panel according to claim 167, wherein the varnish layer (31) of the recess (30) and the varnish layer of the second recess (36) comprise sand and/or particles preferably having a particle size of more than 20 μm.

169. The panel according to any one of the preceding claims 152 to 168, wherein the first pair of opposite edges (3, 4) and/or the second pair of opposite edges (5, 6) are provided with a bevel (51).

170. The panel according to any one of the preceding claims 152 to 169, wherein the proximal end of the concave edge (4) of the first pair of opposing edges comprises a first closing plane (61), wherein the distal end of the convex edge (3) of the first pair of opposing edges comprises a second closing plane (62), wherein in a state in which two such panels are coupled at their first pair of opposing edges (3, 4), the first closing plane (61) of a first such panel contacts the second closing plane (62) of a second such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panels.

171. The panel according to any one of the preceding claims 152 to 170, wherein the proximal end of the second concave edge (6) of the second pair of opposite edges comprises a third closing plane (61), wherein the distal end of the second convex edge (5) of the second pair of opposite edges comprises a fourth closing plane (62), wherein in a state in which two such panels are coupled at their second pair of opposite edges, the third closing plane (61) of a first such panel contacts the fourth closing plane (62) of a third such panel, thereby providing a contact surface between two coupled such panels, wherein the contact surface is substantially perpendicular to the surface of the coupled panel.

172. The panel of any of the preceding claims 152 to 171, wherein a polymer filler material (71) at least partially fills the recess (30) and the second recess (36), wherein the polymer filler material extends vertically in the panel from a position below the position of the decorative layer (20) to a position vertically above the position of the decorative layer,

173. The panel according to any of the preceding claims 172, wherein the surface of the polymer filling material (71) in the recess (30) and in the second recess (36) is at least partially and preferably parallel to the surface of the panel over its entire surface.

174. The panel of any of the preceding claims 172-173, wherein the polymeric filler material (71) provides a portion of the panel edge on which the polymeric filler material is disposed, preferably wherein the polymeric filler material provides an edge on which the polymeric filler material is disposed that is at a height of at least 0.1mm, and preferably at a height of at least 0.5 mm.

175. The panel of claim 174, wherein the portion of the panel edge provided by the polymeric filler material (71) is a cut or milled edge.

176. A panel according to any one of the preceding claims 172 to 175, wherein the polymeric filler material comprises a thermosetting polymer or an elastomeric polymer, such as an epoxy resin;

or wherein the polymeric filler material comprises an acrylic adhesive.

177. A panel according to any one of the preceding claims 172 to 175, wherein the polymeric filler material comprises sand bonded by a polymeric binder, such as by an epoxy or acrylic binder.

178. The panel of any one of the preceding claims 171 to 176, wherein the polymer filler material comprises a pigment, preferably to provide the polymer filler material as a grout dummy in a coupled panel.

179. The panel of any one of the preceding claims 172 to 178, wherein the polymer filler material comprises sand and/or particles preferably having a particle size of greater than 20 μιη at least at the visible surface of the polymer filler material; preferably, wherein the sand and/or the particles provide a roughened surface for the polymer filling material.

180. The panel according to any one of the preceding claims 152 to 179, wherein the recess (30) comprises a bottom and a side proximal to the bottom, wherein the bottom is preferably a flat bottom.

181. The panel according to any one of the preceding claims 152 to 180, wherein the second recess (36) comprises a bottom and a side proximal to the bottom, wherein the bottom is preferably a flat bottom.

182. The panel of any one of the preceding claims 152 to 181, wherein a cross-section of the recess perpendicular to a panel edge provided with the recess is substantially the same as a cross-section of the second recess perpendicular to a panel edge provided with the second recess.

183. The panel of any of the preceding claims 152 to 182, wherein a panel edge provided with the recess engages with a panel edge provided with the second recess in a joint (38); wherein the recess is continuous in the joint without interruption into the second recess.

184. Panel (1), optionally according to any of the preceding claims, wherein the panel comprises a substrate (10) and a top layer (11),

Wherein the top layer comprises a decorative layer (20) and a wear layer (21),

preferably, wherein the decorative layer comprises a printed film,

wherein the panels are provided with coupling parts (7, 8) at a first pair of opposite edges (3, 4), which coupling parts essentially cooperate with each other in the form of male coupling parts (7) and female coupling parts (8) for coupling two such panels to each other at their first pair of opposite edges (3, 4) in a floor, wall or ceiling covering;

wherein the male coupling (7) comprises a tongue (53);

wherein the female coupling (8) comprises a groove (54) delimited by an upper lip (55) and a lower lip (56); preferably, wherein the lower lip (56) extends further than the upper lip (55);

Wherein the lower lip (56) comprises a locking element (13), and wherein the bottom of the tongue (53) comprises a locking element (14), wherein, in a state in which two such panels are coupled at their first pair of opposite edges, the locking element (13) of the lower lip contacts the locking element (14) of the tongue, thereby establishing a locking of the coupled panels at their first pair of opposite edges in a direction perpendicular to the coupled edges and parallel to the surfaces of the coupled panels; preferably, wherein the locking is established by pretensioning;

wherein in the coupled state of the male edge with the female edge of another such panel, an upper surface of the tongue (53) contacts a bottom of the upper lip (55), preferably wherein the contact is substantially parallel to the panel surface, or wherein the contact forms an angle with the panel surface of less than 5 °;

wherein the surface of the convex edge is provided with a recess (91), preferably wherein the recess comprises at least one segment (92) parallel to the panel surface;

wherein the upper lip (55) comprises a distal portion (93) extending from the panel edge, preferably wherein a bottom surface of the distal portion is disposed in the base,

Wherein in a coupled state of the concave edge to the convex edge of another such panel, the distal portion (93) of the upper lip (55) of the concave edge at least partially overlaps the recess (91) at the surface of the convex edge, preferably wherein the overlapping is provided with a contact between the bottom of the distal portion and the recess, more preferably wherein the contact is provided with a pretension; or preferably wherein the overlap is provided with a gap between the bottom of the distal portion and the bottom of the recess (91), more preferably wherein the gap (D3) between the bottom of the distal portion and the bottom of the recess (91) is at least 0.1mm, preferably less than 0.3mm, more preferably at most 0.2mm;

wherein the overlap between the distal portion at the surface of the convex edge and the recess is provided at a vertical distance (D2) from a contact (94) between the upper surface of the tongue and the bottom surface of the upper lip; preferably, the vertical distance (D2) between the overlap and the contact is at least 0.7mm, wherein the overlap is an overlap between the distal portion at the surface of the convex edge and the recess, the contact being between an upper surface of the tongue and a bottom surface of the upper lip;

Preferably, wherein a gap (100) is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

185. The panel according to claim 184, wherein the distal portion (93) comprises a chamfer (95); preferably, wherein the chamfer is a convex or concave circular chamfer or wherein the chamfer comprises a convex or concave circular cross section.

186. The panel of any of the preceding claims 184-185, wherein the convex edge comprises a chamfer (96) proximal to the recess; preferably, wherein the chamfer is a convex or concave circular chamfer or wherein the chamfer comprises a convex or concave circular cross section.

187. The panel according to any one of the preceding claims 184 to 186, wherein the recess (91) is provided with a varnish layer (97), and preferably, when the distal portion (93) comprises a chamfer (95), the chamfer is at least partially provided with a varnish layer (97), such that in the state in which two such panels are coupled at their first pair of opposite edges, the varnish layer of the recess visually continues in the varnish layer of the chamfer (95) of the distal portion; and/or preferably, when the convex edge comprises a bevel (96) proximal to the recess, the varnish layer (97) of the recess (91) extends at least partially onto the bevel (96).

188. Panel according to claim 187, wherein the varnish layer (97) comprises sand and/or particles preferably having a particle size of more than 20 μm.

189. Panel according to any one of the preceding claims 187 to 188, wherein the varnish layer (97) is less than 200 μιη thick, more preferably less than 100 μιη thick, even more preferably less than 60 μιη thick.

190. The panel according to any one of the preceding claims 184 to 189, wherein the width (W1) of the recess (91) is at least 2mm, and preferably at least 2.3mm; and/or wherein the visible width (W2) of the recess in the coupled panel is at least 1.5mm, more preferably at least 2mm.

191. The panel according to any of the preceding claims 184-190, wherein a distal edge (98) of the distal portion (93) extends in a horizontal direction from the concave edge over a distance (D) of at least 0.25mm, preferably a distance of at least 0.7 mm.

192. The panel according to any of the preceding claims 184 to 192, wherein the recess (91) extends into the substrate (10).

193. The panel according to any one of the preceding claims 184-192, wherein in the coupled state of the concave edge with the convex edge of another such panel, a gap (99) is provided, which extends horizontally between the convex edge and the concave edge and vertically between the distal portion (93) and the upper surface of the tongue, and preferably wherein a gap (100) is provided in the horizontal direction between the distal end of the tongue and the proximal end of the concave edge.

194. The panel according to any one of the preceding claims 184 to 192, wherein, in a condition in which the concave edge (4) is coupled with the convex edge (3) of another such panel, the distal end of the upper lip (55) below the distal portion (93) contacts the convex edge (3) of the other such panel at least over a portion of the surface of the distal end of the upper lip below the distal portion (93); preferably, the contact of the distal end of the upper lip below the distal portion (93) is provided at a section of this distal end of the upper lip substantially perpendicular to the surface of the panel.

195. The panel according to claim 194, wherein said contact is formed between a distal end of said upper lip (55) below said distal portion (93) and a lip (130) protruding from said convex edge (3) of said other such panel; preferably, wherein the male edge (3) and the female edge (4) are configured such that, when coupled, the protruding lip (130) overlaps the female edge by at least 0.05mm, preferably at least 0.10mm, in a direction parallel to the panel surface and perpendicular to the coupled edge, such that, in the coupled state, the protruding lip (130) contacts the female edge by pretensioning.

196. The panel according to any of the preceding claims 184-195, wherein the substrate (10) comprises a first layer (101) and a second layer (102), wherein the second layer is arranged closer to the surface of the panel than the first layer, wherein the composition of the first layer is different from the composition of the second layer, wherein the tongue (53) is arranged in the first layer (101), preferably wherein the second layer is made of a softer material than the first layer.

197. The panel according to claim 195 and claim 16, wherein the lip (130) protruding from the convex edge is provided in the second layer (102).

198. The panel of any one of claims 196 to 197, wherein the first layer (101) and/or the second layer (102) comprises a thermoplastic material, such as polyvinyl chloride and a filler, optionally wherein the filler comprises an inorganic filler, such as chalk or lime.

199. The panel according to any one of claims 196 to 198, wherein the recess (91) extends into the second layer (102), but preferably does not extend into the first layer (101).

200. The panel according to any one of the preceding claims 184 to 199, wherein the recess (91) extends into the substrate (10), and wherein a proximal boundary (103) of the recess (91) extends substantially perpendicularly through the decorative layer (20); preferably, wherein the proximal boundary (103) of the recess (91) extends substantially perpendicularly through the panel over a distance of less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm.

201. The panel according to any one of claims 184 to 200, wherein a bottom surface of the distal portion (93) is provided in the substrate (10), and wherein the distal boundary (104) of the distal portion extends substantially perpendicularly through the decorative layer (20); preferably, wherein the distal boundary (104) of the distal portion (93) extends substantially perpendicularly through the panel over a distance less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm.

202. The panel according to any one of claims 184 to 201, wherein the depth (D1) of the recess relative to the surface of the panel is at least 0.4mm, more preferably at least 0.5mm.

203. The panel according to any one of claims 184 to 202, wherein the depth (D1) of the recess relative to the surface of the panel is less than 2mm, more preferably less than 1.5mm.

204. The panel of any one of claims 184 to 203, wherein the panel is couplable to another such panel at a first pair of opposed edges thereof by oblique movement of the tongue of the panel in the groove of the other such panel; and/or coupling the male edge of such a panel into the female edge of another such panel by displacing into the groove of the other such panel by snap action of the tongue of the panel.

205. The panel according to any one of claims 184 to 204, wherein, in a condition in which two such panels are coupled at their first pair of opposite edges (3, 4), a minimum distance (D4) perpendicular to a panel surface between the lower lip (56) and the tongue (53) at the concave edge (4) located proximal to the distal boundary (104) of the distal portion (93) is at least 0.1mm; preferably at least 0.2mm, preferably at most 0.3mm.

206. The panel of any one of claims 184 to 205, wherein the panel comprises a second pair of opposing edges, wherein the second pair of opposing edges are configured as the first pair of opposing edges of any one of the preceding claims 184 to 204.

207. Panel (1), optionally according to any of the preceding claims, comprising a substrate (10) and a top layer (11), wherein the top layer comprises a decorative layer (20) and a wear layer (21), preferably wherein the decorative layer comprises a printed film,

wherein the male coupling comprises a tongue (53);

wherein the female coupling comprises a groove (54) delimited by an upper lip (55) and a lower lip (56); wherein the lower lip (56) extends further than the upper lip (55);

wherein the lower lip (56) comprises a locking element (13), and wherein the bottom of the tongue (53) comprises a locking element (14), wherein, in a state in which two such panels are coupled at their first pair of opposite edges, the locking element of the lower lip contacts the locking element of the tongue, thereby establishing a locking of the coupled panels at the first pair of opposite edges of the coupled panels in a direction perpendicular to the coupled edges and parallel to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning;

Wherein by means of an oblique movement of the tongue of one such panel in the groove of another such panel, the panel enables the male edge (3) of the panel to be coupled to the female edge (4) of the other such panel;

characterized in that a projection (110) is included at the upper side of the lower lip (56), wherein the highest point (111) of the projection is arranged proximal to the locking element (13) and distal to the most distant point of the upper lip (55); and is also provided with

Wherein a recessed section (112) is included at an upper surface of the lower lip (56), wherein the recessed section (112) is recessed further distally from a further proximal side than a further-most point of the upper lip to the further-most point of the upper lip, wherein the recessed section is disposed proximal to a further-most point (111) of the protrusion (110);

wherein the recessed section (112) is sufficiently large and configured such that when the male edge of the panel is coupled by the oblique movement, the distal end of the tongue (53) can enter into and then emerge from the recessed section.

208. The panel (1) according to claim 207, wherein the recessed section (112) comprises a distal side (113) having an angle (a) of at least 10 °, preferably at least 15 °, over at least 50% of the distal side, with respect to the bottom of the panel

And preferably less than 25.

209. The panel (1) according to any one of the preceding claims 207 to 208, wherein the recessed section (112) comprises a distal side (113) having an angle (a) of at least 10 °, preferably at least 15 °, and preferably less than 25 °, with respect to the bottom of the panel, wherein the distal side (113) extends distally from the proximal side of the most distal end of the upper lip (55).

210. Panel (1), optionally according to any of the preceding claims, comprising a substrate (10) and a top layer (11), wherein the top layer comprises a decorative layer (20) and a wear layer (21), preferably wherein the decorative layer comprises a printed film;

wherein the panel is provided with a coupling (7) at a first pair of opposite edges (3, 4),

8) These couplings cooperate with each other in the form of a substantially male coupling (7) and a female coupling (8) for coupling two such panels to each other at their first pair of opposite edges (3, 4) in a floor, wall or ceiling covering;

wherein the male coupling comprises a tongue (53);

Wherein by means of an oblique movement of said tongue of one such panel in said groove of another such panel; and/or such a panel can be coupled with its male edge (3) to the female edge (4) of another such panel by displacement with a snap action of the male edge parallel to the panel surface;

characterized in that the locking element (13) of the lower lip (56) comprises a first contact surface (120), wherein the first contact surface is provided at the proximal side of the locking element (13), and wherein the first contact surface has an angle (A1) with the bottom of the panel of between 20 ° and 35 ° and preferably between 23 ° and 30 °;

wherein the lower lip (56) comprises an inclined surface, wherein the inclined surface is inclined upwards from the bottom of the panel in the proximal direction of the panel, wherein the inclined surface comprises a second contact surface (121);

wherein the second contact surface has an angle (A2) with the bottom of the panel of between 20 ° and 35 ° and preferably between 23 ° and 30 °;

wherein the bottom of the tongue (53) comprises a third contact surface (122),

wherein the third contact surface has an angle (A3) with the bottom of the panel of between 20 ° and 35 ° and preferably between 23 ° and 30 °;

Wherein the bottom of the tongue (53) comprises a fourth contact surface (123), wherein the third contact surface has an angle (A4) with the bottom of the panel of between 20 ° and 35 ° and preferably between 23 ° and 30 °;

wherein said first contact surface (120) is arranged for contacting said third contact surface (122) of another such panel in a state in which said concave edge (4) is coupled with said convex edge (3) of the other such panel;

wherein said second contact surface (121) is arranged for contacting said fourth contact surface (123) of another such panel in a state in which said concave edge (4) is coupled with said convex edge (3) of the other such panel.

211. A panel according to claim 210 and optionally any of the preceding claims 206-208, wherein, in a state in which the male edge of the panel is coupled with the female edge of another such panel, a gap (99, 100) is provided in the horizontal direction between the distal end of the male edge and the edge of the female edge of another such panel, such that expansion of the male edge towards the female edge of another such panel can be accommodated.

212. The panel according to any one of the preceding claims 210 to 211 and optionally according to any one of the preceding claims 206 to 208, wherein in the coupled state of the male edge of the panel with the female edge of another such panel, a gap (125) is provided in a horizontal direction between the distal end of the female edge of another such panel and the edge of the male edge of the panel such that expansion of the female edge of another such panel towards the male edge of the panel is accommodated.

213. The panel according to any one of the preceding claims 210 to 212 and optionally according to any one of the preceding claims 206 to 208, wherein the third contact surface (122) and the fourth contact surface (123) are provided at opposite sides of the locking element (14), wherein the locking element (14) protrudes downwards from the tongue (53).

214. The panel according to any of the preceding claims 184 to 213, preferably wherein the panel is rectangular, oblong or square,

wherein the panels comprise a second pair of opposite edges, wherein the second pair of opposite edges is provided with coupling parts in the form of substantially male coupling parts and female coupling parts cooperating with each other for coupling two such panels to each other at their second pair of opposite edges in a floor, wall or ceiling covering;

Wherein said coupling parts of said second pair of opposite edges are provided with mechanical locking means preventing separation of two coupled panels in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupled panels, preferably wherein in a state in which two such panels are coupled at their second pair of opposite edges, grout part simulations are provided at these coupling edges.

215. Panel (1), optionally according to any of the preceding claims, wherein the panel comprises a substrate (10) and a top layer (11),

wherein the top layer comprises a decorative layer (20) and a wear layer (21), preferably wherein the decorative layer comprises a printed film,

wherein the panel comprises a second pair of opposite edges (5, 6);

wherein the second female coupling (28) is provided at the second female edge (6) in the panel;

wherein said second coupling portion is provided with second mechanical locking means preventing separation of two such panels coupled at their second pair of opposite edges (5, 6) in a direction perpendicular to the surface of the coupled panels and in a direction perpendicular to the respective coupling edges in a plane parallel to the coupled panels;

wherein the second concave edge (6) comprises an upwardly directed downward hook (67); wherein said upwardly directed downward hook comprises, and preferably consists of, a lip (68) with an upwardly directed locking element (69) proximally defining said second female coupling portion (28) in the form of a coupling recess (72);

Wherein the second male coupling portion and the second female coupling portion are configured such that two such panels can be coupled to each other at their respective second pair of opposing edges by a movement (M) substantially perpendicular to the surfaces of the two such panels;

wherein the surface of the second concave edge (6) is provided with a recess (91), preferably wherein the recess comprises at least one segment (92) parallel to the panel surface; wherein the downwardly directed upper hook (64) comprises a distal portion (93) extending from the second convex edge (5), preferably wherein a bottom surface of the distal portion is provided in the base,

wherein in a coupled state in which the second concave edge is coupled to the second convex edge of another such panel, the distal portion (93) extending from the second convex edge (5) at least partially overlaps the recess (91) at the surface of the second concave edge (6),

preferably, wherein the overlap provides a contact between the bottom of the distal portion and the recess, more preferably wherein the contact provides a pretension; or alternatively

Preferably, wherein the overlap provides a gap between the bottom of the distal portion and the bottom of the recess (91), more preferably wherein the gap (D3) between the bottom of the distal portion and the recess (91) is at least 0.1mm, preferably less than 0.3mm, more preferably at most 0.2mm.

216. The panel according to claim 215, wherein the distal portion (93) extending from the second convex edge (5) comprises a chamfer (95); preferably, wherein the chamfer is a convex or concave circular chamfer or wherein the chamfer comprises a convex or concave circular cross section.

217. The panel according to any one of the preceding claims 215 to 216, wherein the second concave edge (6) comprises a bevel (96) located proximal to the recess (91); preferably, wherein the chamfer is a convex or concave circular chamfer or wherein the chamfer comprises a convex or concave circular cross section.

218. The panel according to any one of claims 215 to 217, wherein the recess (91) at the surface of the second concave edge (6) is provided with a varnish layer (97), and preferably, when the distal portion (93) extending from the second convex edge (5) comprises a chamfer (95), the chamfer is at least partially provided with a varnish layer (97), such that in the state in which two such panels are coupled at their second pair of opposite edges, the varnish layer of the recess visually continues into the varnish layer of the chamfer (95) of the distal portion; and/or preferably, when the second concave edge (6) comprises a bevel (96) located proximally of the recess, the varnish layer (97) of the recess (91) extends at least partially onto the bevel (96).

219. Panel according to claim 218, wherein the varnish layer (97) comprises sand and/or particles preferably having a particle size of more than 20 μm.

220. The panel according to any of the preceding claims 218 to 219, wherein the varnish layer (97) is less than 200 μιη thick, more preferably less than 100 μιη thick, even more preferably less than 60 μιη thick.

221. The panel according to any of the preceding claims 215 to 220, wherein the width (W1) of the recess (91) at the surface of the second concave edge (6) is at least 2mm, preferably at least 2.3mm, and/or wherein the visible width (W2) of the recess (91) at the surface of the second concave edge (6) in the coupled panel is at least 1.5mm, more preferably at least 2mm.

222. The panel according to any one of the preceding claims 215 to 221, wherein the distal edge (98) of the distal portion (93) extending from the second convex edge (5) extends in a horizontal direction for a distance (D) of at least 0.25mm, preferably at least 0.7mm, from the second convex edge.

223. The panel according to any of the preceding claims 215 to 222, wherein the recess (91) at the surface of the second concave edge (6) extends into the base (10).

224. The panel according to any of the preceding claims 215 to 223, wherein the substrate (10) comprises a first layer (101) and a second layer (102), wherein the second layer is arranged closer to the surface of the panel than the first layer, wherein the composition of the first layer is different from the composition of the second layer, preferably wherein the second layer is made of a softer material than the first layer.

225. The panel according to claim 224, wherein the first layer (101) and/or the second layer (102) comprises, for example, a polyvinyl chloride thermoplastic material and a filler, optionally wherein the filler comprises an inorganic filler, for example, chalk or lime.

226. The panel according to any one of claims 224 to 225, wherein the recess (91) at the surface of the second concave edge (6) extends into the second layer (102), but preferably does not extend into the first layer (101).

227. The panel according to any one of the preceding claims 215 to 226, wherein the recess (91) at the surface of the second concave edge (6) extends into the substrate (10), and wherein the proximal boundary (103) of the recess (91) at the surface of the second concave edge (6) extends substantially perpendicularly through the decorative layer (20); preferably, wherein the proximal boundary (103) of the recess (91) at the surface of the second concave edge (6) extends substantially perpendicularly through the panel over a distance of less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm.

228. The panel according to any one of the preceding claims 215 to 227, wherein a bottom surface of the distal portion (93) extending from the second convex edge (5) is provided in the substrate (10), and wherein the distal boundary (104) of the distal portion extending from the second convex edge (5) extends substantially perpendicularly through the decorative layer (20); preferably, wherein the distal boundary (104) of the distal portion (93) extending from the second convex edge (5) extends substantially perpendicularly through the panel over a distance of less than the thickness of the decorative layer plus 0.15 mm; preferably over a distance of less than 0.25 mm.

229. The panel according to any of the preceding claims 215 to 228, wherein the depth (D1) of the recess (91) at the surface of the second concave edge (6) with respect to the surface of the panel is at least 0.4mm, more preferably at least 0.5mm.

230. The panel according to any of the preceding claims 215 to 229, wherein the depth (D1) of the recess (91) at the surface of the second concave edge (6) with respect to the surface of the panel is less than 2mm, more preferably less than 1.5mm.

231. The panel according to any of the preceding claims 215-230, wherein the second locking means comprises an undercut (73) at the second concave edge (6), wherein the undercut is arranged for interaction with the downwardly directed locking element (66) of another such panel, preferably with a locking element (81) at the distal end of the downwardly directed locking element (66) of another such panel, to establish a lock perpendicular to the surface of the panel at the distal end of the downwardly directed locking element (66) of another such panel.

232. The panel according to any of the preceding claims 215 to 230, wherein the second pair of opposite edges (5, 6) is configured such that at the second pair of opposite edges (5, 6) no lock is established between the distal end of the second male edge (5) and the proximal end of the second female edge (6) in a direction perpendicular to the surface of the coupled panel.

233. The panel according to any one of the preceding claims 215 to 232, wherein the second pair of opposite edges (5, 6) is configured such that no locking in a direction perpendicular to the surface of the panel coupled at the second pair of opposite edges (5, 6) of the panel is provided at both the proximal end of the upwardly directed locking element (69) and the proximal end of the downwardly directed locking element (66).

234. The panel according to any one of the preceding claims 215 to 232, wherein the proximal end of the downwardly directed locking element (66) comprises a first inclined contact surface (74); wherein the proximal end of the upwardly directed locking element (69) comprises a second inclined contact surface (75); wherein in a state in which two such panels are coupled at their second pair of opposite edges, said first inclined contact surface (74) of a first such panel contacts or is close to said second inclined contact surface (75) of a third such panel; thereby establishing locking of the coupled panels in a direction perpendicular to the surface of the coupled panels; preferably, wherein the locking is established by pretensioning.

235. The panel according to any of the preceding claims 215 to 234, wherein the second pair of opposite edges (5, 6) is configured such that in a state in which two such panels are coupled at their second pair of opposite edges, locking is provided at the distal end of the upwardly directed locking element (69) in a direction perpendicular to the surface of the coupled panels; wherein the lock is provided with or without contact.

236. The panel according to claim 235, wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76) or a protrusion (77), wherein a bottom surface of the undercut (76) or a bottom surface of the protrusion (77) is provided for establishing a lock in a direction perpendicular to a surface of the coupled panel.

237. The panel according to any one of the preceding claims 215 to 236, wherein the upwardly directed locking element (69) contacts a proximal end of the panel edge coupled with the upwardly directed locking element at a distal end of the upwardly directed locking element (69); and/or

Wherein the distal end of the upwardly directed locking element (69) comprises an undercut (76), and the upwardly directed locking element (69) contacts the proximal end of the panel edge coupled with the upwardly directed locking element at the undercut of the upwardly directed locking element;

238. The panel according to any one of the preceding claims 235 to 237, wherein the proximal end of the second male edge (5) comprises a corresponding hook (78), wherein the corresponding hook is arranged for interaction with the upwardly directed locking element (69) of the coupled panel in order to establish a lock in a direction perpendicular to the surface of the coupled panel.

239. The panel according to any one of claims 215 to 238, wherein the coupling of the first pair of opposite edges (3, 4) and the second coupling of the second pair of opposite edges (5, 6) are configured such that a plurality of such panels can be coupled into a covering using a folded-down mounting method.

240. Panel according to any one of the preceding claims, wherein the decorative layer is a printed decorative layer, preferably a polymer film, such as a polyvinyl chloride film, the printed decorative layer comprising a printed image; more preferably, wherein the printed decorative layer comprises or consists of a printed polyvinyl chloride film, the printed polyvinyl chloride film being less than 0.1mm thick, for example 0.07mm thick.

241. A panel according to any one of the preceding claims, wherein the wear layer comprises, and preferably consists of, a transparent polymer film, preferably a transparent polyvinyl chloride film.

242. Panel according to any of the preceding claims, wherein the wear layer comprises a transparent varnish layer, such as an acrylic varnish layer or a urethane acrylic varnish layer, more preferably a UV cured acrylic varnish layer or a UV cured urethane acrylic varnish layer.

243. A panel according to any preceding claim, wherein the panel comprises an embossed surface.

244. A panel according to any of the preceding claims, wherein the substrate comprises, and preferably consists of, at least one polymeric substrate layer comprising a filler.

245. The panel of claim 244, wherein the polymeric substrate layer is a thermoplastic polymer layer, more preferably a polyvinyl chloride polymer layer.

246. The panel according to any one of the preceding claims 244 to 245, wherein the filler comprises or consists of a mineral filler, for example one or more than one selected from chalk, lime and stone; or wherein the filler comprises wood or cellulose particles or fibres.

247. The panel of any one of the preceding claims 1 to 243, wherein the substrate comprises a mineral binder, optionally selected from gypsum, magnesium oxide, sorel cement or portland cement; wherein the substrate comprises a filler optionally selected from wood chips, wood fibers or wood particles.

248. The panel of any one of the preceding claims 1 to 243, wherein the substrate comprises an MDF panel or an HDF panel.

249. The panel of claim 248, wherein one or more or all panel edges comprise a chamfer, preferably wherein the chamfer is a pressed chamfer.

250. The panel of any one of claims 221 to 223, wherein the decorative layer comprises a sheet of printed paper, preferably wherein the sheet of printed paper is impregnated with melamine resin.

251. A panel according to any one of the preceding claims 248 to 250, wherein the wear layer comprises one or more paper layers impregnated with a polymer, preferably wherein the paper layers are impregnated with a melamine resin.

252. Panel according to any one of the preceding claims, wherein the back side of the panel comprises a base layer, preferably a buffer base layer (22).

253. A panel according to any preceding claim, wherein the panel thickness is between 3.2mm and 7 mm; preferably, wherein the panel thickness is less than 4.5mm.

254. A panel according to any one of the preceding claims, wherein the decorative layer provides a stone or brick imitation.

255. A panel according to any one of the preceding claims, wherein the panel is rectangular, rectangular or square; preferably wherein the shortest panel edge is at least 300mm long.

256. The panel of claim 255, wherein the panel is square, and wherein the length of the sides of the panel is greater than 300mm, preferably greater than 400mm, more preferably greater than 500mm.

257. A package of panels;

wherein the package comprises a plurality of panels according to any one of the preceding claims; wherein the panels are stacked on top of each other; and is also provided with

Wherein the package comprises a housing surrounding the stacked panels.