A set of floor panels includes a first floor panel having a first holding profile at a lateral edge, a second floor panel having a second holding profile at a lateral edge joinable to the first holding profile by a substantially vertically oriented downward movement of the second floor panel, and a separate L-shaped clip including a horizontal leg, a vertical leg and a detent tab adjoining an upper end of the vertical leg, the clip inserted into a clip groove of the first holding profile, the detent tab attaining a locking position for vertically locking the holding profiles during or after the downward movement of the second floor panel, such that when the clip is inserted into the clip groove, the horizontal leg generates a tensioning force by which the upper end of the vertical leg is pushed against an upper delimiting wall of the clip groove.

A set of rectangular building panels have a frontside and a backside and a mechanical locking device at opposite first and second edge portion configured for plane locking of similar panels in an assembled position by means of displacement of a plane with a second edge portion of a second panel in an engagement direction towards a first edge portion of an adjacent first panel. The first edge portion includes a first locking element configured to cooperate for plane locking with a first locking groove at the second edge portion. The first edge portion has a first front edge portion adjacent the frontside of the first panel and a first sub edge portion between the first front edge portion and a flexible tongue in an insertion groove, the insertion groove being arranged between the backside of the first panel and the first sub edge portion.

Building panels including a first and a second panel and including a locking device. The locking device includes a tongue and an edge groove provided in the second panel and the first panel, respectively, wherein the tongue and the edge groove are configured to cooperate with each other for locking a first edge portion of the first panel to a second edge portion of the second panel in a first direction. The locking device further includes a separate tongue provided in an insertion groove and a tongue groove configured to cooperate with each other for locking the first edge portion to the second edge portion in a second direction. A length of the tongue groove along an edge portion may be smaller than a length of the edge portion. A length of the insertion groove along an edge portion may be smaller than the length of the edge portion.

A method is provided for manufacturing a panel that includes a substrate and a top layer provided on the substrate. The top layer may include a decor film and a transparent film. The decor film may be a printed synthetic material film chosen from the group consisting of a vinyl-based film, a polyethylene based film, a polyurethane based film, and a polypropylene film. A print may be situated on an upper side of the printed synthetic material film. The transparent film may be a thermoplastic synthetic material film the material of which is chosen from the group consisting of polyvinyl chloride, polyethylene, polyurethane, and polypropylene. The method may involve providing the decor film and the transparent film on the substrate by performing a first press treatment at an increased temperature to form a package of the substrate, the decor film, and the transparent film. The first press treatment may be performed by a calendar device or a continuous press device. A structure may be formed in the thermoplastic synthetic material that forms a surface of the package by performing a second press treatment using a press device with a structured press element at a temperature that is lower than the increased temperature.

A set including a first panel, a second panel and a mechanical locking device for locking the first panel to the second panel, the mechanical locking device includes an insertion groove at the second edge surface, a flexible tongue positioned in the insertion groove and an edge tongue including a tongue groove, the flexible tongue includes a first locking surface and a second locking surface, the first locking surface is configured to cooperate with the tongue groove for locking of the first panel to the second panel in a first direction when the flexible tongue is positioned in the insertion groove in a first orientation, the second locking surface of the flexible tongue is configured to cooperate with the tongue groove for a locking of the first panel to the second panel in a first direction when the flexible tongue is positioned in the insertion groove in a second orientation.

A set of building panels, such as floor or wall panels, having a mechanical locking device at opposite first and second edge portions, such as short edges, configured for horizontal locking of similar or essentially identical panels in an assembled position by means of displacement in an engagement direction, such as a vertical direction, of the second edge portion of a second panel relative the first edge portion of an adjacent first panel. The second edge portion has a locking groove configured to receive a locking element of the first edge portion of an adjacent first panel by means of the displacement. An outer portion of the locking element, such as in a horizontal direction transverse the first edge portion, is configured to cooperate with an inner portion of the locking groove for positioning, such as horizontal positioning, respective upper edge portions of the first and second edge portions during assembling.

A floor, wall or ceiling panel comprises a core and a decorative top layer provided on the core. The core comprises a magnesium oxide-based board material, and wherein the aforementioned panel, on at least two opposite edges, is provided with coupling means allowing that two of such panels can be interlocked at the respective edges.

A panel having a core, a top side, a underside, a first edge pair and a second edge pair. The first edge pair has a groove profile at a panel edge and a complementary tongue profile at the opposite panel edge, which cooperate in positively locking relationship so that movement of locked panels away from each other in the plane of the panels is opposed. At its opposite panel edges the second edge pair has a receiving hook and a complementary arresting hook. The arresting hook can be assembled to the receiving hook by a joining movement in a direction perpendicular to the panel plane. The receiving hook has a holding groove for a separate locking element for a vertical locking action. At a corner of the panel the tongue edge of the first edge pair comes together with the receiving hook. The holding groove provided on the receiving hook of the second edge pair for the locking element has an upper groove wall with a spacing from the top side that is greater than the spacing between the panel top side and the tongue top side of the tongue profile of the first edge pair.

A panel including a core, a top side, an underside, a first edge pair and a second edge pair. The first edge pair has a groove profile at a panel edge and a complementary tongue profile at the opposite panel edge, which are lockable by a pivotal movement and positively lock so that movement of locked panels away from each other in the plane of the panels is opposed. At its opposite panel edges the second edge pair has a complementary receiving hook and an arresting hook. The arresting hook is assembled to the receiving hook by a joining movement in a plane perpendicular to the panel plane by the pivotal movement for the first edge pair. The receiving hook or the arresting hook has a holding groove for a separate locking element that provides vertical locking. A butting surface is arranged at the receiving hook substantially orthogonal to the top side. The arresting hook has a counterpart butting surface substantially orthogonal to the top side. The second edge pair has at least one sealing nose at a lower end of the counterpart butting surface of the arresting hook or at a lower end of the butting surface of the receiving hook. The sealing nose extends parallel to the respective panel edge over the entire length of the counterpart butting surface or the butting surface.

Panels are shown which are provided with a mechanical locking system allowing perpendicular connection with a snap action. A set of panels including a first and a second panel, an edge of the second panel is insertable into a groove of the first panel, when the panels are arranged essential perpendicular to each other, to obtain a mechanical connection between the first and the second panel, when the second panel is displaced essentially perpendicularly to the first panel.