Abstract: The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.

Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.

Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.

Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.

Abstract: The invention relates to a method for the production of polyurethane block foam, wherein a polyurethane reactive mixture containing carbon dioxide is suddenly relieved from a pressure above the pressure breaking the equilibrium of the carbon dioxide to a normal pressure, wherein the liquid polyurethane reactive mixture is foamed by releasing dissolved carbon dioxide.

Abstract: The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.

Abstract: Polyurethane molded articles are produced from a flowable polyol-polyisocyanate reaction mixture on a shot-wise basis. The flowable reaction mixture is formed by combining the components of that mixture in the mixing chamber of a mixhead. The contents of the mixhead are introduced (preferably via an outlet pipe) into a mold in a manner such that the mixing chamber is substantially emptied in each case. Any ambient gas in the mixing chamber is then removed before the respective next shot is initiated.

Abstract: From an extruded panel manufactured continuously by means of a twin-belt conveyor, shorter sections may be profitably removed by a cutting device equipped with an adjustable program controller which fixes optimum start-of-cut positions related to a reference point and lying immediately in front of the edges of the extruded panel. The cutting blade is brought into the optimum start-of-cut position in good time before each cut.

Abstract: Flowable reaction components of a reaction mixture which form solid or foamed material comprising filling material are transported from a storage container to a high-pressure mixing head in pressure stages by the use of gear pumps connected in series without major wear of the gear pumps.

Abstract: The present invention is directed to an improved process for producing block foam from polyurethane forming component wherein dissolved carbon dioxide is used as a blowing agent.

Abstract: Reaction mixtures which form polyurethane foamed material, with production conditions which are varied during production, e.g. variation of the proportion of foaming agent, variation of the ratio of reaction components, variation of the throughput, or fine adjustment, can be produced by employing an improved apparatus which comprises a depressurisation element (creamer) (10), wherein a perforated plate or sieve plate constructed as a first throttle plate (24), and a second perforated or sieve plate, which is constructed as a throttle plate (26, 27, 28) and which is disposed downstream thereof, are disposed in the creamer (10), wherein the spacing a between these two throttle plates (24, 26) can be varied during operation in accordance with the variable production conditions, and wherein a calming element (29) is disposed after the second throttle plate (26) in the direction of flow.

Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.

Abstract: Flowable reaction components of a reaction mixture which form solid or foamed material comprising filling material are transported from a storage container to a high-pressure mixing head in pressure stages by the use of gear pumps connected in series without major wear of the gear pumps.

Abstract: A process and device are disclosed for manufacturing foam moldings. The parting plane of the mold has a circumferential vacuum channel, the top mold half has a suction channel for quickly evacuating the mold and self-closing expansion channels are arranged at the highest points of the inner cavity of the mold.

Abstract: Angular blocks of foam flocks can be produced with angular edges and a homogeneous density distribution over the entire cross-section in a molding box by first extending the of adjacent mold walls before the flocks are introduced, and, after the flocks have been introduced, reducing it to the envisaged cross-section of the slab to be produced. Wherein, at every corner formed by two adjacent mold walls, one of the mold walls is divided into a wall part and a flap held thereon which can be moved around a swivelling axis perpendicular to the base and can be swivelled between a position pointing outwards and a position parallel with the wall part.

Abstract: Polyurethane molded articles are produced from a flowable polyolpolyisocyanate reaction mixture on a shot-wise basis. The flowable reaction mixture is formed by combining the components of that mixture in the mixing chamber of a mixhead. The contents of the mixhead are introduced (preferably via an outlet pipe) into a mold in a manner such that the mixing chamber is substantially emptied in each case. Any ambient gas in the mixing chamber is then removed before the respective next shot is initiated.

Abstract: Flowable reaction components of a reaction mixture which form solid or foamed material comprising filling material are transported from a storage container to a high-pressure mixing head in pressure stages by the use of gear pumps connected in series without major wear of the gear pumps.

Abstract: Angular blocks of foam flocks can be produced by the composite process with angular edges and a homogeneous density distribution over the entire cross-section in a molding box by first extending the filling cross-section in the corners of adjoining mold walls before the flocks are introduced, and, after the flocks have been introduced, reducing it to the envisaged cross-section of the slab to be produced and thus filling hollow spaces, and compacting the flock filling to the desired density in the corners, so that the slab has a homogeneous density over the entire cross-section.

Abstract: From an extruded panel manufactured continuously by means of a twin-belt conveyor, shorter sections may be profitably removed by a cutting device equipped with an adjustable program controller which fixes optimum start-of-cut positions related to a reference point and lying immediately in front of the edges of the extruded panel. The cutting blade is brought into the optimum start-of-cut position in good time before each cut.

Abstract: Angular blocks of foam flocks can be produced by the composite process with angular edges and a homogeneous density distribution over the entire cross-section in a molding box by first extending the filling cross-section in the comers of adjoining mold walls before the flocks are introduced, and, after the flocks have been introduced, reducing it to the envisaged cross-section of the slab to be produced and thus filling hollow spaces, and compacting the flock filling to the desired density in the comers, so that the slab has a homogeneous density over the entire cross-section.