Abstract: A process and plant for producing boards of wood-based materials having either a structured upper surface or a smooth upper surface. The plant has a continuously operating production press and a continuously operating embossing press. A discharge section and a transfer section are located between the continuously operating production press and embossing press. The continuously operating production press compresses and cures a mat of pressing stock to create a board that retains heat, while the continuously operating embossing press imparts the permanent embossed pattern on an upper surface of a board. The transfer section has a water spray device and a covered steam hood for cooling the board and producing steam.

Abstract: A method for continuously producing finished board from a mat of a pressing stock mixed with a binder in a continuously operating press having steel belts, friction reducing elements, heating plates and cooling plates, the method comprising choosing a cooling length of a cooling section to cure the mat of pressing stock and to ensure a harmless vapor pressure within a finished board; introducing the mat between the steel belts of the continuously operating press; heating and pressing the pressing stock in a heating section of the continuously operating press; and cooling surfaces of the pressing mat just before the reaction starting temperature is reached, wherein the surfaces of the mat are subject to cooling when the temperature at the center of the stock is about 85% to 95% of the temperature required for curing the pressing stock. A continuously operating press for producing boards from a pressing stock has a press table and a press ram located above the press table.

Abstract: The process relates to the production of boards of wood-based material, in particular, oriented strand board, chipboard or fiberboard comprising lignocellulose- and/or cellulose-containing particles. The particles, in the form of chips, fibers, chippings or the like, are mixed with a binder and scattered in a scattering station onto a moving molding belt to form a mat of pressed stock. The mat of pressed stock is pressed and cured by the application of pressure and heat in a platen press or a continuously operating press. To accomplish surface structuring during the production cycle, the finished board of wood-based material just released from the pressing operation is subjected to a structuring operation on one or both sides.

Abstract: The invention relates to a method and a plant for assembling, gluing and pressing veneer panels to be connected in a plurality of layers one above the other and one behind the other to form an endless strand of laminated veneer boards forming a continuous veneer-panel strand. The plant has a glue application machine, rolling belts, a laying device and a continuously operating press. A veneer-panel laying and interlinking device has a buffer acceleration belt with a combined reversing action. The laying device has a veneer-assembly laying belt and is embodied as a recirculating chain device with a recirculating supporting surface to form a fall-through gap, which can be moved forward and backward and raised and lowered for the front or rear veneer-panel edge and can be adjusted to the respective deposition and interleaving position on the veneer-assembly laying belt.

Abstract: A continuously operating press having a plurality of press columns each including upper and lower press heating plates being separated by an adjustable press nip, a piston-cylinder arrangement connected to both the upper and lower press heating plates and a spring supporting the press column achieves an increased longitudinal deformation gradient of the press heating plates. The press achieves the increased longitudinal deformation gradient by deforming the upper and lower press heating plates together.

Abstract: A continuously operating press for the production of particle boards, fiber boards and similar wood boards and plastic boards, wherein a spherical geometrical deformation of the press/heating platen in the longitudinal and transverse directions with the hydraulic actuators in positive or non-positive engagement with the press/heating platen is set during start-up or production by means of different actuating forces in the longitudinal and transverse directions, the setting process being independent of the reaction forces of pressing stock, wherein, to allow a convex bending deformation to be set at the maximum pressing force, the central actuators in each row of actuators are dimensioned to give 105% to about 150% of the maximum pressing force in relation to the outer actuators, and wherein each row of actuators has a position sensor system comprising a feeler rod, a reference gauge bar, a lever mechanism and a measured-value transmitter with a position sensor for the press-nip actual value in the center of t