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| Number | Title | Issue Date |
| 5883143 | Method and device for the production of foam using carbon dioxide dissolved under pressure A method and device are described for the production of foams from two-component reactive mixtures using carbon dioxide as expanding agent, by mixing at least one of the reactive components with carbon dioxide under pressure. That mixture is then mixed wi... | 03/16/1999 |
| 5844015 | Process and device for continuous production of polyurethane block foam A process and a device are described for the production of polyurethane foam by application of a froth onto the conveyor belt of a block-foam installation, whereby the froth is applied onto the lower conveyor belt in a free, substantially vertical fall an... | 12/01/1998 |
| 5833930 | Apparatus for foam manufacturing using carbon dioxide dissolved under pressure For the expansion of a liquid containing gas under pressure in dissolved form, it is proposed that the liquid be passed with expansion through an extended flow channel with a small cross-sectional measurement with generation of high rates of shear. The ve... | 11/10/1998 |
| 5834527 | Process for the manufacture of polyurethane foam moldings A process for the manufacture of polyurethane foam moldings is described wherein carbon dioxide physically dissolved under pressure is used as the blowing agent and a pressure is maintained in the mold cavity during the introduction of the polyurethane re... | 11/10/1998 |
| 5788932 | Apparatus for preparing flowable reaction mixtures from at least two flowable reactants An apparatus for preparing flowable reaction mixtures from at least two flowable reactants in which the components are injected into a mixing chamber by means of injection nozzles, the force of the reactant acting upon the nozzle needle is at least substa... | 08/04/1998 |
| 5789457 | Method and device for the production of foam using carbon dioxide dissolved under pressure A method and device are described for the production of foams from two-component reactive mixtures using carbon dioxide as expanding agent, by mixing at least one of the reactive components with carbon dioxide under pressure. That mixture is then mixed wi... | 08/04/1998 |
| 5669559 | Process for pulverising polyurethane, polyurea and/or polyurethane/polyurea materials in a roller mill When pulverising polyurethane, polyurea and/or polyurethane/polyurea materials in a roller mill with at least two rollers (2,3) rotating at different circumferential speeds, a very economical method of operation is achieved by returning the coarse fractio... | 09/23/1997 |
| 5670179 | Valve for closing cavities which are to be foam-filled A valve for use in introducing a foamable reactive mixture into a cavity, with the valve being of such size that it can be positioned within the cavity and when so-positioned is in contact with at least one of the walls of the cavity, with the valve inclu... | 09/23/1997 |
| 5643970 | Method and apparatus for foam manufacture using carbon dioxide dissolved under pressure For the expansion of a liquid containing gas under pressure in dissolved form, it is proposed that the liquid be passed with expansion through an extended flow channel with a small cross-sectional measurement with generation of high rates of shear. The ve... | 07/01/1997 |
| 5637277 | Process and device for producing foam casings with CFC-free polyurethane foams A process and device for foaming casings, particularly refrigerator casings, with a blowing agent which can form an explosive mixture with atmospheric oxygen during evaporation which reduce the risk of explosion by introducing inert gas into the space in ... | 06/10/1997 |
| 5593010 | Process and device for supplying energy to workstations circulating on a chain A process for the simultaneous, constantly available provision of amounts of energy and/or signal-transmission media to a plurality of workstations circulating in the shape of an oval is described. A supply line, connected to all the workstations, is circ... | 01/14/1997 |
| 5587182 | Apparatus for the production of endless polyurethane moldings The invention is directed to an apparatus for the production of polyurethane moldings endless in one dimension using at least two alternately operated mixheads for the reactive polyurethane components. Material which has been correctly conditioned by circ... | 12/24/1996 |
| 5547276 | Method and apparatus for continuously dispersing fine particle-sized solids in a liquid A method and apparatus for continuously dispersing fine particle-sized solids in liquids by a continuous process, in which a constant stream of liquid is fed into a mixing apparatus and fine-particle-sized solids are metered into the mixing apparatus by m... | 08/20/1996 |
| 5521224 | Method and apparatus for controlling the number of cells in polyurethane foam The invention relates to a method and an apparatus for producing polyurethane foam with a controlled number of cells, in which a gas is dispersed in one of the components, i.e. the polyol or the isocyanate, in a dispersing device arranged between the mixi... | 05/28/1996 |
| 5476638 | Process and device for the production of plastics from at least two free-flowing reactants The maintenance of the exact metering ratio during the production of plastics, particularly foams, from free-flowing reactants loaded with pulverulent to fine-grained or fibrous additives can be improved by mixing the additive in compacted form in a preli... | 12/19/1995 |
| 5453249 | Apparatus for producing a flowable reaction mixture from at least two flowable reaction components In the production of a flowable reaction mixture of at least two flowable, also not readily miscible, reaction components which react completely with each other to form solid substance or foam material, a rapid abatement of the mixture flow is achieved wi... | 09/26/1995 |
| 5451376 | Process and apparatus for reprocessing polyurethane foam wastes, in particular flexible foam wastes, for recycling as additives in the production of polyurethane In a fine comminution apparatus arranged downstream of a coarse comminution apparatus, polyurethane foam wastes can be comminuted to the desired particle size for recycling as an additive in the production of polyurethane, in a low-dust and energy-saving ... | 09/19/1995 |
| 5443797 | Process and apparatus for the production of a flowable reaction mixture from at least two flowable reactive components A process and apparatus are described for the production of a flowable reaction mixture from at least two flowable reactive components which may be difficult to mix, which components react with one another to form a solid or a foam material. The component... | 08/22/1995 |
| 5415540 | Apparatus for manufacturing molded plastic articles or for manufacturing hollow foamed articles In an apparatus for manufacturing molded plastic articles or for manufacturing hollow foamed articles wherein at least two further mold halves are allowed to cooperate alternately with a first mold half, improved accessibility is achieved and a smaller am... | 05/16/1995 |
| 5388975 | Apparatus for continuously manufacturing sandwich elements In order to guarantee substantially trouble-free operation when manufacturing sandwich elements on a double conveyor belt installation having a downstream cross cutter and cleaning device, the cleaning device disposed on a transport carriage i) is returne... | 02/14/1995 |
| 5375988 | Apparatus for continuous production of polyurethane block foam In the continuous production of polyurethane block foam, in particular from fast-reacting reaction mixtures which expand with rise time of less than 1.5 minutes, to achieve a good foam quality and a rectangular cross-section a centrally disposed mixer (44... | 12/27/1994 |
| 5346673 | Device and process for the production of a reaction mixture from at least two flowable reaction components In the production of a reaction mixture which forms plastic material, in particular foamed plastic material, from at least two flowable reaction components, the inlet members or other switch-over members which must be switched over in a precise fashion, a... | 09/13/1994 |
| 5330647 | Filter device for separating coarse components from liquid components The invention is directed to a filter device for the removal of coarse components from a liquid component used in the manufacture of plastic materials. The filter device has a hollow housing in which a rotor is mounted. The rotor is provided with agitator... | 07/19/1994 |
| 5312596 | Mixhead for mixing at least two free-flowing reaction components In order not to have to rinse, during breaks in production, oscillating mixheads such as are used for the manufacture of free-flowing, plastic-forming reaction mixtures, an exchangeable insert part held in position by means of a clip and preferably consis... | 05/17/1994 |
| 5264167 | Process and apparatus for continuously manufacturing sandwich elements In order to guarantee substantially trouble-free operation when manufacturing sandwich elements on a double conveyor belt installation having a downstream cross cutter and cleaning device, the cleaning device disposed on a transport carriage i) is returne... | 11/23/1993 |
| 5152943 | Process for the production of plastics from at least two free-flowing reactants The maintenance of the exact metering ratio during the production of plastics, particularly foams, from free-flowing reactants loaded with pulverulent to fine-grained or fibrous additives can be improved by mixing the additive in compacted form in a preli... | 10/06/1992 |
| 5143946 | Process and apparatus for the production of a flowable reaction mixture from at least two flowable reactive components A process and apparatus are described for the production of a flowable reaction mixture from at least two flowable reactive components which may be difficult to mix, which components react with one another to form a solid or a foam material. The component... | 09/01/1992 |
| 4917502 | Nozzle for the mixing of at least two flowable reaction components and process for operating such nozzle The invention relates to a nozzle for mixing at least two flowable (and in particular foam-forming) reaction components comprising a housing; component supply pipes leading into the housing; a housing bore arranged in the housing having a coaxial outlet c... | 04/17/1990 |
| 4904451 | Process and device for the preparation of flowable reaction mixtures In order to keep the reversing times from circulation of the reaction components to mixing and vice versa as short as possible for the purpose of good mixing in the initial and end phases in the preparation of flowable reaction mixtures by high-pressure m... | 02/27/1990 |
| 4895503 | Device to produce molded plastic parts from a flowable reaction mixture To avoid contaminating the sprue runner which leads from the mixing device to the molding cavity of a molding tool for the production of molded plastic, especially foam plastic, parts, an insertable lining is placed in the sprue runner and can be removed ... | 01/23/1990 |
| 4775517 | Apparatus for the preparation of a reaction mixture from liquid components The device of the present invention is used for the production of a reaction mixture. The device has a housing with a guide bore provided therein for an injection piston. Feed lines with entry openings and recirculation lines are provided. The device is a... | 10/04/1988 |
| 4749554 | Nozzle for mixing flowable reaction components The invention relates to a nozzle for mixing at least two flowable (and in particular foam-forming) reaction components comprising a housing; component supply pipes leading into the housing; a housing bore arranged in the housing having a coaxial outlet c... | 06/07/1988 |
| 4693448 | Closure unit for molding tools Closure units for molding tools, in particular those for the production of polyurethane moldings comprising long lifting cylinders arranged between an upper cross head and a movable cross head for lowering and raising the upper half of a molding tool, the... | 09/15/1987 |
| 4582224 | Nozzle for mixing at least two flowable reaction components A nozzle is used to mix two or more flowable reaction components which nozzle has a force controlled injection needle (7) and a force controlled needle casing (12) guided in a guiding bore (12). One component emerges centrally into an outlet channel (3) w... | 04/15/1986 |
| 4520947 | Machinery for filling cavities with flowable reaction mixtures The instant invention is directed to a process for filling a cavity with a flowable reaction mixture through an inlet opening located at the bottom of the cavity. The process broadly comprises injecting a relatively small amount of reaction mixture into t... | 06/04/1985 |
| 4489023 | Method of and an installation for the continuous production of block-foam In the continuous production of block-foam from liquid reaction components, the danger of over-rolling exists in installations having low throughputs and in installations having high throughputs, which over-rolling results in faults in the finished block.... | 12/18/1984 |
| 4442070 | Apparatus for the production of a flowable reaction mixture The present invention relates to an apparatus for the production of a flowable reaction mixture of at least two flowable components which mixture forms a foam or solid material, comprising: (a) storage means for said components; (b) supply lines leading from t... | 04/10/1984 |
| 4389375 | Apparatus for producing a reaction mixture of fluid components forming a foam or solid material Hydraulically coupled injection nozzles (5,28) and return nozzles (15,38) are used in an apparatus for producing a reaction mixture of fluid components forming foam or a solid material. These nozzles (5,15,28,38) comprise control pins (11,20,34,43) which ... | 06/21/1983 |
| 4309373 | Process for filling cavities with flowable reaction mixtures The instant invention is directed to a process for filling a cavity with a flowable reaction mixture through an inlet opening located at the bottom of the cavity. The process broadly comprises injecting a relatively small amount of reaction mixture into t... | 01/05/1982 |
| 4260355 | Device for the discontinuous production of block foam The invention is directed to a device for the discontinuous production of block foam comprising a mixing unit, a means for moving the unit approximately vertically into and/or out of a mold with the unit having reaction component feed lines, a stirring me... | 04/07/1981 |
