Abstract: Method for heating a fiber/plastic composite material comprising at least one layer of carbon fibers in a plastic matrix, wherein a magnetic field is induced by means of a microwave antenna, and the field direction of the magnetic field runs in the plane of the layer of carbon fibers.

Abstract: A method for stabilizing yarns made from polyacrylonitrile using chemical stabilization reactions, including: generating a field of high-frequency electromagnetic waves in an application space of an applicator, which has areas with minimum electric field strength and areas with maximum electric field strength, the maximum electric field strength in the application space being in a range from 3 to 150 kV/m; continuously supplying a precursor yarn based on a polyacrylonitrile polymer into the application space, and conveying the precursor yarn through the application space and through the field of the high-frequency electromagnetic waves; introducing a process gas into the application space and conveying the process gas through the application space with a flow rate of at least 0.1 m/s relative to the precursor yarn being conveyed through the application space, wherein a temperature of the process gas is in a range between 150 and 300° C.

Abstract: The invention relates to a method for regulating the temperature of a hot isostatic press and to a hot isostatic press, consisting of a pressure vessel (1) having an interior loading space (19) and insulation (8) arranged in between, wherein heating elements (4) and a loading space (19) having a load (18) are arranged inside the insulation (8), wherein at least the loading space (19) is surrounded by a convection sleeve (27) to form a convection gap (28). Fluid is sprayed through at least one nozzle (13) in the interior of the pressure vessel (1) and/or the loading space (19) to generate a rotational flow (23) so that said fluid mixes with the fluid held therein, and said fluid simultaneously forms a circulation (29) around the convection sleeve (27) and enters the loading space (19) via the convection gap (28).

Abstract: The invention relates to a method for regulating the temperature of a hot isostatic press and to a hot isostatic press, comprising a pressure container (1) having an interior horizontal loading space (19) and insulation (8) arranged in between, wherein heating elements (4) and a loading space (19) having a load (18) are arranged inside the insulation (8), wherein at least one rotational flow (23) is developed actively or passively inside the pressure container (1), in addition to at least one existing natural or activated convection flow for heating or cooling or for maintaining a temperature level. An independent hot isostatic press or one suitable for said method is characterized in that active and/or passive means for developing a rotational flow (23), occurring substantially at an angle to the convection flow, are arranged in the pressure container (1).

Abstract: A method for intermittent production and continuous supply of a resin-filler mixture in the course of production of plastic molded parts and an installation for intermittent production and continuous supply of a resin-filler mixture. A method and an installation, by which it is possible to ensure a continuous supply of a resin-filler mixture reliably and in continuous operation, an optimum and precise mixing ratio of the individual constituents of a resin-filler mixture, mostly consisting of a resin mixture and fillers, in which components, particularly portions of very small or highly viscous components, are dispersed finely and uniformly. Optimizing the production of resin-filler mixture for the supply of small components and achieving a continuous supply of the resin mixture that is reliable for continuous operation occurs.

Abstract: A system and method for rapid cooling a hot isostatic press including a pressure container. The pressure container has an internal load space and includes insulation disposed at least partially around the load space, heating elements disposed inside the insulation, and a load disposed on a load bearing plate. Fluid is directed into the load space of a pressure container using at least one nozzle to form a rotational flow. The fluid from the at least one nozzle is mixed as it passes through the rotational flow near the insulation with fluid near the load. The fluid from the at least one nozzle has a lower temperature than the fluid in the load space and/or the load.

Abstract: A dosing hopper for producing wood material panels has a feed device (2) that distributes the supplied material flow of glued wood particles continuously over the width of the hopper (1). The dosing hopper supplies elongated flat wood strands for producing oriented structural chip boards or panels (OSB, LSL). The feed device (2) includes a weighing device (23), with which the wood strands are distributable over the entire hopper width in a weight-dosed and oriented manner.

Abstract: A process for manufacturing ligneous material board with improved surface slip-resistance. The process includes an additional spreading station which spreads fine particles onto the upper and lower covering layers to obtain slip-resistant textured surfaces.

Abstract: Elongated strands, particularly wood strands, are deposited on a molding belt or a conveyor belt so that the strands are longitudinally oriented relative to each other for manufacturing panels known as oriented strand boards. For this purpose the strands are discharged onto an alignment mechanism or head that has a plurality of rotation shafts each carrying a plurality of disks axially spaced from one another along the respective shaft. These disks form alignment channels when the shafts rotate. Each channel or channel section is further subdivided into strand alignment chambers by a plurality of paddle elements. Preferably four such paddle elements are mounted to the respective rotation shaft between two neighboring disks thereby forming four pass through chambers between two neighboring disks.

Abstract: An apparatus for the heating of pressed stock in the manufacture of boards of material or in the manufacture of veneer panels. The apparatus includes a microwave preheating device having rod antennae disposed in series, reflective shields, and a heating cell configured as a continuous oven in which the introduction of microwaves into the pressed stock takes place via the rod antennae. The rod antennae are attached to lie horizontally and transversely to the direction of production above, below, or above and below the pressed stock within the heating cell. The reflective surfaces are assigned to the rod antennae on the opposite sides of the pressed stock.

Abstract: A method and an apparatus for producing extra-wide veneers and using them for the production of continuous laminated wood boards by gluing and pressing them from a chain of extra-wide veneers assembled in several layers over and behind one another. The method invention consists in the fact that the veneers arriving with a producible width and grain running crosswise are brought together end to end to form a chain of veneers, stitched together at the junctions or attached with adhesive tape and the veneers thus assembled are cut to a given oversize in the direction of the grain so that the seams or junctions between the veneers are distributed irregularly across the width of laminated boards, not in line one over the other.

Abstract: The invention relates to a dosing hopper for producing wood material panels with a feed device (2), which distributes the supplied material flow of glued wood particles continuously over the width of the hopper (1). The dosing hopper is characterized in that it is provided for elongated flat wood strands (strands) for producing oriented structural chip boards or panels (OSB, LSL). In this regard, the feed device (2) is embodied so that it includes a weighing device (23), with the aid of which the wood strands (strands) are distributable over the entire hopper width in a weight-dosed and oriented manner.

Abstract: The invention relates to a dosing hopper for producing panels with oriented chips (OSB, LSL), which is arranged above a spreading head and includes an apparatus for the pre-orientation (7) of the elongated flat wood strands (strands). This dosing hopper is characterized in that an oscillating conveyor or a parallel conveyor is provided below the pre-orientation apparatus (7), which conveyor distributes the pre-oriented wood strands in their pre-oriented position continuously over the entire hopper width.

Abstract: The invention relates to a vertical dosing hopper for producing wood material panels or board sheets, which is arranged above a spreading head for glued wood particles, and in which the particle supply reserve is provided essentially in a vertical direction. In this context, the wood particles are conveyed essentially from the top toward the bottom to a discharge device (18, 48). The invention is characterized in that the hopper is provided for elongated flat wood particles, wood strands (strands) for producing panels or board sheets with oriented wood strands (OSB, LSL). Thereby, the supply reserve space comprises at least one vertical conveying shaft (13), in which the elongated flat wood strands are continuously conveyed to a discharge device (18, 48). In this context, the conveying shaft consists essentially of at least two parallel and vertical oppositely-facing conveyor belts (14, 15, 46, 47), which extend over the entire hopper width.

Abstract: An apparatus for the heating of pressed stock in the manufacture of boards of material or in the manufacture of veneer panels. The apparatus includes a microwave preheating device having rod antennae disposed in series, reflective shields, and a heating cell configured as a continuous oven in which the introduction of microwaves into the pressed stock takes place via the rod antennae. The rod antennae are attached to lie horizontally and transversely to the direction of production above, below, or above and below the pressed stock within the heating cell. The reflective surfaces are assigned to the rod antennae on the opposite sides of the pressed stock.

Abstract: An apparatus for longitudinally orienting elongated particles, such as wood strands for forming orienting strand board panels, includes a pre-orienting unit with vertically arranged orienting elements, such as discs of a disc roll, a final orienting unit below the pre-orienting unit, and a forming belt below the final orienting unit. The final orienting unit includes plural sheetmetal chutes that are spaced successively along the transport direction of the forming belt and that each include plural side-by-side trough-shaped orienting channels that slope at a slope angle toward the forming belt along the transport direction. The non-oriented wood strands supplied to the pre-orienting unit are pre-oriented by falling through passages thereof, and the pre-oriented strands are then further longitudinally oriented as they slide longitudinally along the orienting channels, from which they slide without free-falling onto the forming belt. In an alternative embodiment, the pre-orienting unit can be omitted.

Abstract: A process for manufacturing ligneous material board with improved surface slip-resistance. The process includes a mechanical ablation step which roughens the surfaces of the board to obtain slip-resistant textured surfaces.

Abstract: A process for manufacturing ligneous material board with improved surface slip-resistance. The process includes an additional spreading station which spreads fine particles onto the upper and lower covering layers to obtain slip-resistant textured surfaces.

Abstract: The invention relates to a process and an installation for the production of pressed-stock boards in a continuous sequence. The invention includes forming and transporting the mat of pressed stock on the molding and charging belt in a space bounded at the longitudinal sides. Two upright side supporting bands on the molding and charging belt run along and guide the pressed stock or the mat of pressed stock in such a way as to limit its width from the scattering station up to compaction in the prepress. The height of these side supporting bands correspond to the changing height of the press nip. The installation includes two side supporting bands arranged upright on the molding and charging belt, on both longitudinal sides. Supporting rollers bear against the side supporting bands in the region from the scattering station up to the prepress.

Abstract: A process for producing continuous veneer laminate panels by gluing and pressing in a hot press overly wide veneer sheets in several layers of veneer sheet sections combined one on top of another or one after another. The veneer sheet section combined with the overly wide veneer sheets is provided before entering into the hot press with steam exhaust joints via one or several longitudinal cuts and, in this way, is divided into two or several veneer sheet sections which are variable in their width, and the longitudinal cuts take place in correspondence to the several predetermined partitioning widths of the finished veneer laminate panels.