Abstract: The invention relates to an adhesive bond between two elements each having a dried adhesive film (26, 34) of a one-component adhesive applied to it in the factory, wherein the adhesive films (26, 34) have merged into a single adhesive layer, and further including a mechanical draw-out resistance element extending from a first element of the two elements toward a second element of the two elements.

Abstract: The present invention relates to the use of modified nanoparticles in wood based panels, in particular OSB-panels for reduction of the emission of volatile organic compounds (VOCs). The invention further relates to a wood based panel containing the modified particles and to a method for producing such a wood based panel.

Abstract: The invention relates to a method for producing a glue-coated element, to the glue-coated element, to an adhesive compound and to a method for producing glue-coated derived timber panels, as well as to panels produced according to the method. The method for producing a glue-coated element that can be glued with other similarly glue-coated elements, comprises the steps of applying a one-component adhesive to at least one surface section of the element and drying the applied one-component adhesive. According to a preferred embodiment of the invention, draw-out resistance elements are provided on the glue-covered element.

Abstract: The present invention relates to a hybrid adhesive, in particular for use in the production of engineered wood such as particle boards, fiber boards, plywood or glued-laminated timber, comprising at least one polycondensation adhesive, at least one polyaddition adhesive, and at least one particular, in particular a nanoparticle smaller than 500 nm, wherein the at least one particle is modified with at least one compound of the general Formula (I) RaSiX(4-a), or the general Formula (II) ObXc(OH)dReSiO(4-b-c-d-e)/2. The present invention also relates to the use of the adhesive in engineered wood boards and to methods for the production thereof.

Abstract: A floor panel including structure for releasably connecting at least two panels. A tongue is formed extending in the longitudinal direction of the side edge and corresponding recess is formed opposite it. The recess comprises a top lip and a bottom lip, and the bottom lip forms a shoulder with a front shoulder side. The shoulder blocks the panels in the transverse direction. An undercut is adjoined by a recess, with a bearing region which corresponds to the shoulder, and a wall, which, with the front shoulder side in the installed state, is located opposite the latter. Form-fitting elements are formed on the wall and the front shoulder side that, in the installed state, engage one inside the other and bring about locking in the vertical direction. An underside of the tongue and a top side of the bottom lip runs parallel to the top side.

Abstract: A process for production of wood-base materials from lignocellulosic comminution product is disclosed. The wood-base materials are treated with at least one additive in the course of their production to reduce or diminish the emission of volatile organic compounds (VOCs) and, optionally, very volatile organic compounds (VVOCs), in particular terpenes and acids. The treatment is effected with one additive, being a porous carbon, like activated carbon. In another aspect, the present application is directed to the use of porous carbon, in particular, activated carbon, to reduce or diminish the emission of VOC, and optionally, VVOC, to reduce or diminish the emission of terpene and acids and aldehydes. Also, wood-base materials which are obtainable with the process or wood-based materials produced by using the additives mentioned above and which have reduced emission of VOCs, in particular terpenes and acids but also aldehydes are disclosed.

Abstract: A method for wet gluing of wood fibers, which have been defibrated in a refiner from wood comminuted into chips, in order that these chips, following wet gluing in a gluing zone, can be dried in a dryer, then spread, in a spreading arrangement, to form a fiber mat and pressed, in a hot press, to form a wood-material panel. The wood fibers are transported into the gluing zone, within a conveying tube, in a stream of saturated steam. In order to calm the fiber stream, the conveying tube widens at the start of the gluing zone, within which a plurality of gluing nozzles are situated, as a result of which the speed of the fiber stream is reduced before the first gluing nozzle has been reached, the fibers in the calmed fiber stream are glued with adhesive by the gluing nozzles, and then are fed to the dryer.

Abstract: The present invention relates to a method for spraying particulate solids onto a substrate, comprising the steps of: coating the substrate with a wet and/or adhesive synthetic resin layer, building up a gas pressure in a line, generating a pressure differential in the line, swirling and carrying along particulate solids in the line, ejecting swirled, particulate solids from the line onto the surface of the wet and/or adhesive synthetic resin layer of the substrate. The invention also relates to a substrate, in particular a wood-based panel or decorative paper, at least partially coated with a particulate solid, characterized in that the particulate solid is applied to the substrate with an accuracy of up to ±0.8 g/m2, preferably of up to ±0.5 g/m2, particularly preferably of up to ±0.3 g/m2, preferably of up to 0.1 g/m2.

Abstract: The present invention relates to a method for the production of wood material made of fragmentation products containing lignocelluloses, wherein these wood materials have a reduced emission of volatile organic compounds, aldehydes, particularly formaldehyde. Specifically, the invention relates to methods for the production of wood materials having reduced emission of volatile organic compounds and aldehydes, wherein a certain combination of compounds is utilized in order to prevent the emission of volatile organic compounds and aldehydes, particularly formaldehydes, from the produced wood material. The present invention further relates to wood material that can be produced according this method, particularly OSB panels, particle board, and MDF panels. Finally, the present invention provides compositions suitable in the treatment of wood material to reduce the emission of aldehydes, particularly formaldehyde and volatile organic compounds.

Abstract: The present invention relates to the use of modified nanoparticles in wood based panels, in particular OSB-panels for reduction of the emission of volatile organic compounds (VOCs). The invention further relates to a wood based panel containing the modified particles and to a method for producing such a wood based panel.

Abstract: A floor panel is bounded in a horizontal plane by a top side, which is provided with a decorative layer, and an underside, which is provided for bearing on an underlying surface. The floor panel is provided with connecting structure for the releasable connection of at least two panels. The connecting structure is formed on at least one first side edge such that locking takes place in the transverse direction and vertical direction. A form-fitting element for locking in the vertical direction with a further panel is formed on a second side edge, which runs at an angle to the first side edge. A tongue is formed on the first side edge, the tongue extending in the longitudinal direction of the side edge, and a recess, corresponding to the tongue, is formed on an opposite side edge.

Abstract: A wood chip drying system for drying wood chip includes a furnace, a drier for the wood chip and a recirculation apparatus for the recirculation of exhaust vapors into their drier. The recirculation apparatus has an exhaust vapor heater, and the wood chip drying system is designated to reduce organic compounds present in the exhaust vapor prior to the recirculation into the drier. The exhaust vapor heater includes a regenerative and/or catalytic heat exchanger which is arranged downstream after the drier and which is designated so as to heat up the exhaust vapor to a temperature which is high enough to oxidize at least a majority of particles present in the exhaust vapor.

Abstract: A wood material board hot-pressing system with a primary circuit includes a supply pipe for discharging of hot heat transfer fluid from a heat generator and a return pipe for supplying cooled heat transfer fluid to the heat generator. A secondary circuit features a pressing device for pressing wood material boards. A supply channel supplies heat transfer fluid to the pressing device and a return channel returns cooled heat transfer fluid to the primary circuit. A controlling device contains a control valve and is configured to control a flow of heat transfer fluid from the primary circuit to the secondary circuit. A secondary circulation pump with variable output is set up to circulate the heat transfer fluid in the secondary circuit. The controlling device features a heat output recording device and is configured to automatically control a level of heat output (P) supplied to the pressing device.

Abstract: A panel has an upper side facing the room in the use position and a lower side facing the floor. The lower side is coated, at least in sections, with a bonding layer composed of polymer. The bonding layer has an uneven surface on the outer side facing away from the panel, and has been coated at least in sections with a damping layer composed of polymer. A covering composed of panels, a process and an apparatus for producing the panels are also described.

Abstract: The present invention relates to a method for spraying particulate solids onto a substrate, comprising the steps of: coating the substrate with a wet and/or adhesive synthetic resin layer, building up a gas pressure in a line, generating a pressure differential in the line, swirling and carrying along particulate solids in the line, ejecting swirled, particulate solids from the line onto the surface of the wet and/or adhesive synthetic resin layer of the substrate. The invention also relates to a substrate, in particular a wood-based panel or decorative paper, at least partially coated with a particulate solid, characterized in that the particulate solid is applied to the substrate with an accuracy of up to ±0.8 g/m2, preferably of up to ±0.5 g/m2, particularly preferably of up to ±0.3 g/m2, preferably of up to 0.1 g/m2.

Abstract: The present invention relates to a hybrid adhesive, in particular for use in the production of engineered wood such as particle boards, fiber boards, plywood or glued-laminated timber, comprising at least one polycondensation adhesive, at least one polyaddition adhesive, and at least one particular, in particular a nanoparticle smaller than 500 nm, wherein the at least one particle is modified with at least one compound of the general Formula (I) RaSiX(4-a), or the general Formula (II) ObXc(OH)dReSiO(4-b-c-d-e)/2. The present invention also relates to the use of the adhesive in engineered wood boards and to methods for the production thereof.

Abstract: The present invention relates to a method for spraying particulate solids onto a substrate, comprising the steps of: coating the substrate with a wet and/or adhesive synthetic resin layer, building up a gas pressure in a line, generating a pressure differential in the line, swirling and carrying along particulate solids in the line, ejecting swirled, particulate solids from the line onto the surface of the wet and/or adhesive synthetic resin layer of the substrate. The invention also relates to a substrate, in particular a wood-based panel or decorative paper, at least partially coated with a particulate solid, characterized in that the particulate solid is applied to the substrate with an accuracy of up to ±0.8 g/m2, preferably of up to ±0.5 g/m2, particularly preferably of up to ±0.3 g/m2, preferably of up to 0.1 g/m2.

Abstract: A method for the wet gluing of wood fibres, which have been previously defibrated in a refiner (4) from wood comminuted into chips, in order that these chips, following the wet gluing in a gluing zone (BZ), can be dried in a dryer (5), then spread, in a spreading arrangement (6), to form a fibre mat and pressed, in a hot press (7), to form a wood-material panel of desired thickness, wherein the wood fibres are transported into the gluing zone (BZ), within a conveying tube (R), in a stream of saturated steam, is distinguished in that:—in order to calm the fibre stream, the conveying tube (R) widens at the start (A) of the gluing zone (BZ), within which a plurality of gluing nozzles (D1, D2, . . . Di, . . . , DL) are situated, as a result of which the speed of the fibre stream is reduced even before the first gluing nozzle D1 has been reached,—the fibres in the calmed fibre stream are glued with adhesive by means of the gluing nozzles (D1, D2, . . . Di, . . . DL), and then—are fed to the dryer (5).

Abstract: A panel made of a wooden material with a surface coating has an undercoat which is applied to the wooden material and at least one lacquer coating and a functional component. There is produced a panel made of a wooden material with a low-cost surface coating which can be applied easily and is optically appealing.

Abstract: A panel, in particular floor panel, with a core of wood material or a wood material/plastic mixture, a top side and a bottom side, which panel has on at least two opposite lateral edges a profiling corresponding to one another such that two identically embodied panels can be connected and locked to one another by an essentially vertical joining motion in the horizontal and vertical directions, wherein the locking in the vertical direction can be brought about by at least one tongue element movable in the horizontal direction, which element snaps into place during the joining motion behind a locking edge extending essentially in the horizontal direction, is characterized in that the tongue element is formed in one piece out of the core.