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| Number | Title | Issue Date |
| 6531079 | Gear extruder having gas vent ports The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rub... | 03/11/2003 |
| 6361200 | Gear extruder having gas vent ports The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rub... | 03/26/2002 |
| 6213748 | Multiple extrusion head for the production of profiles, in particular for tire production The invention relates to a multiple extrusion head for the production of profiles, in particular for tire production, with a fixedly arranged head flange, into which extruders open, and with a closed head having flow ducts, an adapter and a profile strip,... | 04/10/2001 |
| 6158883 | Gear extruder having gas vent ports The invention relates to a gear extruder for plasticizing and homogenizing rubber mixtures, having at least two gears disposed in chambers in the extruder housing, with the teeth of the gears meshing with one another, and having a port for feeding the rub... | 12/12/2000 |
| 5911783 | Adjusting device for the rolls of a calendar An adjusting device for the rolls of a calender having a hydraulic drive for the fine setting of the rolls in their working position and a hydraulic drive for positioning the rolls in the working, maintenance and roll-change positions. The hydraulic drive... | 06/15/1999 |
| 5567370 | Process for the production of TPE foam profiles for the building and automotive industries In a process and apparatus for producing TPE foam profiles, material is heated up in a conveying zone at a temperature of 180°-210° C. and a pressure of 100-200 bar. The melt then passes through a two-stage shear process consisting of two spaced shearin... | 10/22/1996 |
| 5490725 | Melt-sealing device for extruders for the processing of thermoplastic polymers or rubber A melt-sealing device for extruders for thermoplastic polymers or rubber for sealing off the gear unit side against high-melt pressure, in which sealing is effected by the configuration of the extruder screw which includes an intake section, a compression... | 02/13/1996 |
| 5464363 | Polishing stack for thermoplastic films or sheets The invention relates to a polishing stack with at least one fixed and one moveable polishing roll for polishing a plastic sheet leaving a wide extrusion die. A device is provided that preloads the frames and the bearings and acts on a roll gap adjusting ... | 11/07/1995 |
| 5463946 | Continuously operating material press with lubricating film for reducing friction A continuous material press for the production of material sheets made of substances which require a high pressure and an intensive thickness reduction during the pressing process, with the press including a heated/cooled and driven central drum, and a ci... | 11/07/1995 |
| 5440104 | Process for a uniform heating, pasteurization and sterilization of products by means of microwave The invention relates to a process for a uniform and fast heating of products by microwaves that are pulsed and introduced intermittently into the products, with the products to be treated, such as chemical or pharmaceutical products or foodstuffs, partic... | 08/08/1995 |
| 5358693 | Method and apparatus for the single-stage continuous production of a rubber base compound and a rubber end compound The invention is directed to a method and an arrangement for continuously producing a rubber base compound and a rubber end compound in a single stage for vehicle tires, drive belts, conveyor belts as well as for industrial rubber products. The rubber bas... | 10/25/1994 |
| 5324183 | Apparatus for producing a controllable, uniform conveying pressure for processing highly viscous rubber or thermoplastics The present invention relates to an apparatus for producing a controllable, uniform conveying pressure for processing highly viscous, temperature sensitive rubber or thermoplastics, consisting of two rotating conveying elements that form a toothlike seali... | 06/28/1994 |
| 5320036 | Continuously operating material press A continuously operating material press comprising temperature-controllable and drivable central drum 1 and a tensioned endless steel belt which passes around a major portion of the surface of the central drum and is supported by at least two guide drums ... | 06/14/1994 |
| 5302635 | Method and arrangement for the single-stage continuous production of a rubber base compound and a rubber end compound The invention is directed to a method and an arrangement continuously producing a rubber base compound and a rubber end compound in a single stage for vehicle tires, drive belts, conveyor belts as well as for industrial rubber products. The rubber base co... | 04/12/1994 |
| 5297866 | Apparatus for producing a controllable uniform conveying pressure for processing highly viscous rubber or thermoplastics The invention relates to an apparatus for producing a controllable, uniform conveying pressure for processing highly viscous, temperature sensitive rubber or thermoplastics material. The apparatus includes two rotating conveying elements that conjointly f... | 03/29/1994 |
| 5292240 | Pelletizer with cutting knife control An exact distance between the rotating knives and the stationary die plate of a pelletizer can be set and maintained during the entire pelletizing process. The drive shaft for the cutting beams and cutting knives can be heated or cooled and is supported o... | 03/08/1994 |
| 5273419 | Apparatus for producing monodisperse powder from rubber or rubber articles The invention relates to an apparatus for producing monodisperse powdered rubber and includes an extruder and individual conveying, grinding and discharge sections with respective cooling units corresponding thereto. The cooling units are arranged outside... | 12/28/1993 |
| 5262111 | Process for the continuous production of rubber compounds in a twin-screw extruder A process for the continuous production of a rubber compound in a twin-screw extruder is disclosed that improves the dispersion of carbon black in the extrudate while reducing the specific energy requirements of the extrudate. Rubber is fed into the extru... | 11/16/1993 |
| 5244373 | Extruder for poorly miscible extrudates An extruder for poorly miscible extrudates which includes a pin-lined barrel section and a transfer mixing section used together. Restricting pins are arranged in the transfer mixing section in the region of the greatest barrel channel volume and permit u... | 09/14/1993 |
| 5223071 | Apparatus for producing chip and fiberboard webs of uniform thickness Apparatus for continuously manufacturing chip-and fiber-board webs having uniform thickness across their width in a press comprising a centrally disposed press cylinder journalled to rotate in bearings in uprights and at least one pressure roller disposed... | 06/29/1993 |
| 5221504 | Process and apparatus for optimal operation of a high-speed extruder A process and an apparatus for optimal operation of a high-speed extruder in which a pin-lined barrel section and a Transfermix section, both known per se but separately used, are utilized together in an extruder. The combination of these mixing systems a... | 06/22/1993 |
| 5188010 | Arrangement for cutting thin-walled belts from a closed band of rubber An arrangement for cutting thin-walled reinforced closed bands of rubber into rectangular belts having the same width is suggested wherein the closed band is tensioned between two rollers. By deflecting one of the two rollers, the closed band experiences ... | 02/23/1993 |
| 5167978 | Press for the continuous production of thin chipboard and fibreboard A press for the continuous production of thin chipboard and fibreboard includes a central rotatable drum and a feed roller; a nip being defined between the curved exterior surfaces of the drum and roller. An endless steel band passes around a major portio... | 12/01/1992 |
| 5153009 | Extrusion device An extrusion device for processing thermoplastic plastics material and rubber has a housing and primary screw means rotatably mounted therein. The device includes a discharge zone in which a sleeve member provided with external flights is mounted on a bea... | 10/06/1992 |
| 5147198 | High performance extruder with a constant number of threads in the inlet and outlet regions of a transfer shearing section A pin transfer extruder is provided, wherein the pin-barrel and transfer mixing sections, which are known per se and have only been used individually hitherto, are jointly used in one extruder. Throttle pins, which are disposed in the transfer mixing sect... | 09/15/1992 |
| 5141426 | Degassing extruder A single-screw degassing extruder for thermoplastic plastics materials and rubber is provided, wherein the pin-barrel and transfer sections, which are known per se and have only been used individually hitherto, are jointly used in one extruder. Throttle p... | 08/25/1992 |
| 5130070 | Method of reverse degassing an extrusion melt and an extrusion device therefor A method for reverse degassing a melt of thermoplastic plastics material and an extrusion device therefor. Thermoplastic plastics materials are fed into the extrusion device either in the form a melt or as a granulated, which latter is fused to form a mel... | 07/14/1992 |
| 5127741 | High-performance extruder A high-performance extruder is provided, wherein the pin-barrel and transfer mix mixing sections, which are known per se and have only been used individually hitherto, are jointly used in one extruder. The combination of both mixing systems permits the th... | 07/07/1992 |
| 5110284 | Wear-resistant housing for an extrusion device A corrosion-resistant and wear resistant housing for a screw extruder having one or more axis-parallel bores, each of which accommodates a screw of the extruder. Support sleeves, which have a smaller internal diameter than the screw bore or bores and whic... | 05/05/1992 |
| 5108711 | Multi-shaft thin-layer reactor A multi-shaft thin-layer reactor for treating fluid materials in which gaseous material is present during such treatment. The treatment involves the addition of gas to the fluid material or the removal of gas therefrom. The reactor includes a housing in w... | 04/28/1992 |
| 5106198 | Apparatus for treating molten material An apparatus for treating molten material wherein a gas is present during such treatment either by being removed from the molten material or by being added thereto. The apparatus comprises a housing having a continuous spindle or a pair of spindles dispos... | 04/21/1992 |
| 5100312 | Calender assembly A calender assembly having at least two calender rollers mounted on axles and which jointly define a calendering nip with at least one of the rollers being mounted for rotation in a support column. Each roller includes a roller axle and a roller core and ... | 03/31/1992 |
| 5096638 | Method for extruding a thermoplastic plastics material foam A method of producing a foamed thermoplastic plastics material wherein the plastics material is mixed with a pulverulent nucleating agent and is then fused in an extrusion device. A gaseous nucleating agent, generally nitrogen, is then injected into the f... | 03/17/1992 |
| 5089193 | Method for extruding a thermoplastic plastics material foam A method of extruding a foamed thermoplastic plastics material wherein the plastics material and a pore regulating agent are fed into an extruder and are fused in a fusion zone. The pressure of the fused material is augmented in a further zone and the mat... | 02/18/1992 |
| 5087191 | Embossing calender assembly An embossing calender arrangement capable of embossing a thermoplastic plastics material film on either of its two major surfaces or both surfaces as desired, the embossing calender including two embossing roller sets. The roller sets are each mounted wit... | 02/11/1992 |
| 5068069 | Method of maintaining the force of a stripper blade on an extruder feed roller constant and an apparatus therefor In an extrusion device of the type which has a screw rotating in a housing and which has a feed section in which a feed roller, cooperating with the screw, is provided, a stripper blade is used to remove the fed material from the feed roller. The present ... | 11/26/1991 |
| 5064587 | Method for extruding a thermoplastic plastics material foam A method of extruding a foamed thermoplastic plastics material wherein the thermoplastic plastics material, together with a pore regulating agent, is introduced into an extruder and is fused. Gaseous nitrogen, in an amount of 0.2% to 0.5% by weight, and a... | 11/12/1991 |
| 5064364 | Apparatus for the continuous coating of cylindrical workpieces with a resilient material An apparatus is provided for the continuous coating of cylindrical workpieces with a mixture of rubber or thermoplastic plastics material. The arrangement includes an extrusion device, a coating head and a flow channel, which connects the extrusion device... | 11/12/1991 |
| 5057167 | Method for producing chip- and fiber-board webs of uniform thickness A method of continuously manufacturing chip and fiberboard webs having uniform thickness across their width in a press comprising a centrally disposed press cylinder journalled to rotate in bearings in uprights and at least one pressure roller, and prefer... | 10/15/1991 |
| 5044757 | Extrusion device for incorporating additives A single or twin-screw device is used to incorporate additives in a thermoplastic plastics material melt. The or each barrel of the extruder includes a first feed aperture for the introduction of the melt and a second feed aperture downstream thereof for ... | 09/03/1991 |
