Abstract: A cladding panel for floors has a groove (12) along at least one edge or end face (17) and a tongue (6) along at least one other edge or end face (17). The cross-sections of the tongue (6) and the groove (12) are matched to one another and the panels (1, 2) being connectable by inserting the tongue (6) into the groove (12). On at least one wall surface (5) of the groove (12) and/or on at least one tongue surface (7), at least one bead (8) of cement is applied. On the tongue surface (7) there is a bead (8) that faces the wall surface (5) of the groove (12), the wall surface is also provided with a bead (9). The two beads (8, 9) are locked to one another after insertion of the tongue (6) into the groove (12). In other embodiments there may be additional beads (8) and (9) on the surfaces of the tongue (6) or groove (12), or positioned within recesses (10).

Abstract: The invention relates to an improved lightweight panel, novel uses thereof, as well as to an improved method for manufacturing the same.

Abstract: The system relates to a system for joining flat, relatively thin members that adjoin one another along their narrow face, the members having grooves incorporated into the narrow faces that are parallel to the surface and have groove walls that are parallel to each other, and the joining element being inserted into the grooves of two adjacent members and bridging the partition gap between the members in the manner of an external tongue.

Abstract: A method of connecting structural components having a relatively low thickness, the method including pre-applying, at an off-site location, one of an adhesive and a substance which activates an adhesive to at least one of at least one of the sides of the groove of one of the structural components and at least one of the sides of the tongue of another of the structural components, and connecting, at a site different from the off-site location, the structural components together by causing the tongue to be inserted into the groove.

Abstract: The invention relates to an improved lightweight panel, novel uses thereof, as well as to an improved method for manufacturing the same.

Abstract: A décor paper for use as a surface on a floor panel has applied to it quaternary ammonium compounds in a resin mixture. The resin may be urea or melamine resin, and the mixture may also include abrasion-resistant particles such as corundum. The mixture applied to the paper provides it with antistatic properties, so that, when used on a floor panel, very little static electricity is generated by people walking on it. The floor panel is made up by the paper, attached to a one surface of a carrier, with a corresponding paper attached to the opposing surface.

Abstract: Panels or boards comprise laterally mounted locking elements that can be inter-connected laterally in a positive fit, without the use of adhesive. The locking elements are designed to be connected in an initial position in which the panels are interlocked at least in one direction in a positive fit and a certain amount of play occurs in the common joint of the two panels. The panels may then be shifted, in a parallel direction relative to the common joint, to final position in which there is no play in the common joint and the panels are interconnected without the use of adhesive.

Abstract: A method of connecting structural components having a relatively low thickness, the method including pre-applying, at an off-site location, one of an adhesive and a substance which activates an adhesive to at least one of at least one of the sides of the groove of one of the structural components and at least one of the sides of the tongue of another of the structural components, and connecting, at a site different from the off-site location, the structural components together by causing the tongue to be inserted into the groove.

Abstract: A décor paper for use as a surface on a floor panel has applied to it quaternary ammonium compounds in a resin mixture. The resin may be urea or melamine resin, and the mixture may also include abrasion-resistant particles such as corundum. The mixture applied to the paper provides it with antistatic properties, so that, when used on a floor panel, very little static electricity is generated by people walking on it. The floor panel is made up by the paper, attached to a one surface of a carrier, with a corresponding paper attached to the opposing surface.

Abstract: A tongue and groove cladding panel is described.

Abstract: An arrangement of building elements capable of a snap-fastening interconnection comprises an element, especially the tongue, consisting of a different material from the other building elements. An MDF/HDF panel, is initially milled along the longitudinal and/or transverse sides, and the resulting groove is then provided and/or foam-filled with extrudates. Finally, the free ends of the extrudates are milled to form the profile of the tongue. Alternatively, or additionally, a groove may also be milled into the extrudates.

Abstract: The invention relates to flat and/or elongated building components (1, 2), preferably wooden, and a structure connecting these components (1, 2) in accordance with the groove and tongue principle. Two legs (3, 4) forming a groove (5) branch off from a front face of one of the components (1), and a tongue (6) branching off from a front face of the other component (2) can be inserted into the groove (5). Locking elements (7, 8) hold the components (1, 2) in an assembled position. In accordance with the invention, the locking elements are configured as triangular projections (7) and cavities (8) in facing or adjacent surfaces of the groove and/or tongue.

Abstract: The invention relates to flat and/or elongated building components (1, 2), preferably wooden, and a structure connecting these components (1, 2) in accordance with the groove and tongue principle. Two legs (3, 4) forming a groove (5) branch off from a front face of one of the components (1), and a tongue (6) branching off from a front face of the other component (2) can be inserted into the groove (5). Locking elements (7, 8) hold the components (1, 2) in an assembled position. In accordance with the invention, the locking elements are configured as triangular projections (7) and cavities (8) in facing or adjacent surfaces of the groove and/or tongue.

Abstract: A process for the low-emission drying of wood chips has a first dryer (2) directly heated by means of a combustion chamber (3). Arranged in series in relation to this dryer (2) is a second, indirectly heated dryer (5) whose exhaust air is recycled to the combustion chamber (3) via line (7). The exhaust gases discharged from the dryer (2) are passed to a second combustion chamber (11) where they are heated to at least 300.degree. C., whereby the pollutants are eliminated. The heat used for this purpose can be recovered by means of a waste heat boiler (14) and used for heating the second dryer (5).