Assignee: Hennecke GmbH

Location: Leverkusen, DE
No. of patents: 27

Number	Title	Issue Date
7968023	Method for the production of polyurethane block foam The invention relates to a process and a device for the production of polyurethane clock foam, in which the reaction mixture, after flowing through a mixer, flows freely from an outflow opening and then flows through an accumulation chamber, in which a static pressu...	06/28/2011
7404916	Process for producing polyurethane moldings Cellular or compact polyurethane moldings are produced by conveying at least one isocyanate component and at least one polyol component by a metering machine in dispensing manner into a mixing chamber via component lines to form a polyurethane reaction mixture. Subs...	07/29/2008
7351363	Press for hard foam plates A press for rigid foam sheets with continuous adjustment of the spacing between the two press plates (1,3), in particular for sandwich panels with an upper and lower outer layer and, located therebetween, a core of rigid polyurethane foam. The lower press pla...	04/01/2008
7278842	Apparatus for the production of polyurethane sandwich elements The present invention relates to a process for the continuous production of polyurethane sandwich elements comprising an upper outer layer and a lower outer layer and a layer of cellular polyurethane lying in between, which is firmly bonded to the outer layers. This...	10/09/2007
7240689	Multiple component mixing head The invention relates to a mixing head and to a method of mixing at least one polyol component and at least one isocyanate component and where appropriate additives, to form a polyurethane reaction mixture. ...	07/10/2007
7230037	Method for mixing a polyol component and an isocyanate component 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. ...	06/12/2007
7144534	Method and device for producing rebonded foam blocks The invention relates to a method of producing rebonded foam blocks in a box mould having a base, a plurality of mutually adjacent mould side walls standing thereupon and a plunger movable in the direction of the base, in which at least one of the mould side walls m...	12/05/2006
7101163	Process and apparatus for the continuous production of slabstock foam 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 floo...	09/05/2006
6889816	Device for inserting and removing work stations circulating on chain A device for carrying out a sequence of working steps on travelling work station wagons comprising an oval track wherein said work station wagons are circulating, wherein said wagons comprise at least one detachable connection element connected to a circulating chai...	05/10/2005
6833095	Process for the continuous production of slabstock foam 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 floo...	12/21/2004
6809124	Method for the production block foam 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 pres...	10/26/2004
6808378	Device for the production of moldings of plastic reinforced with long fibers Plastic moldings reinforced with long fibers are made without the risk of forming loops in a continuous thread or roving fed to a cutting unit at the end of a mold filling operation or tearing thereof during renewed start-up for the next molding filling operation, e...	10/26/2004
6689325	Process and device for producing foam using carbon dioxide dissolved under pressure A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of whi...	02/10/2004
6635200	Process and device for producing plastic moldings from a flowable reaction mixture 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 ...	10/21/2003
6615700	Method and sawing device for removing sections of defined length from a continuously manufactured extruded panel composed of a rigid foam core disposed between two outer layers 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 refere...	09/09/2003
6602971	Process and device for pressurizing flowable reaction components 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 with...	08/05/2003
6544481	Apparatus for the production of foamed material from a reaction mixture containing a dissolved foaming agent 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 fin...	04/08/2003
6361723	Process and device for manufacturing polyurethane foam moldings 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 arrange...	03/26/2002
6261486	Process and device for the production of polyurethane moldings by the shot process For the production of polyurethane moldings by the shot process from isocyanate and polyol components, the production is improved in that, in addition to the conditioning already known for the line system, at least one of the commercially available but mo...	07/17/2001
6261498	Process for the production of foam slabs of angular cross-section in a flock composite 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 wa...	07/17/2001
6147133	Process and device for producing foam using carbon dioxide dissolved under pressure A process and a device are described for the continuous production of block foam by the foaming of a mixture which reacts to form polyurethane and which contains carbon dioxide dissolved under pressure, wherein the pressure of the reactive mixture is redu...	11/14/2000
6127442	Process for foam production using dissolved under pressure carbon dioxide A process is described for the continuous production of polyurethane block foam using carbon dioxide which is physically dissolved under pressure as a foaming agent, wherein before the polyol and isocyanate components are mixed the carbon dioxide is disso...	10/03/2000
6065862	High-pressure mixing head The present invention relates to a high-pressure mixing head for mixing at least two reactive plastic components, containing a mixing chamber, into which there lead two injection nozzles arranged opposite one another for the components, a proportioning pi...	05/23/2000
6036898	Process for the continuous production of polyurethane slabstock foam A process and apparatus are described for the continuous production of polyurethane slabstock foam by applying a polyurethane reactive mixture in the form of a liquid foam from a substantially punctual source onto the conveyor belt of a slabstock foam pla...	03/14/2000
6033104	Device for removing plastics residues from mixer head outlet pipes A device for removing plastics residue from a cleaning piston having an end face and a mixer head outlet pipe of a counter-current injection mixer head, wherein the device comprises a stripping plunger having a stripping edge; a mortar for receiving the s...	03/07/2000
6019919	Process for foam production using carbon dioxide dissolved under pressure A process and device for the continuous production of slabstock foam by foaming a polyurethane reactive mixture containing carbon dioxide dissolved under pressure, comprising the steps of a) feeding said polyurethane reactive mixture into a linear extended ...	02/01/2000
5840778	Process and device for producing foam using carbon dioxide dissolved under pressure A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of whi...	11/24/1998

PatentStorm

Bizarre Patents

PatentStorm News

Assignee: Hennecke GmbH