| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 264211240 | Curing or polymerization in the extruder (includes incomplete polymerization or curing, or coagulating rubber) | 11 |
| 20080308967 | Method of Processing of Thermoplastic Polymeric Material, an Apparatus and Composition of the Thermoplastic Polymeric Material - The present invention relates to processing of thermoplastic polymers, for example to injection molding and extrusion. More particularly the present invention relates to extrusion of polyolefin resins, especially polyethylene resin, and could be used in manufacture of polymer profile, isolating jacketing at electrical cable, polymer tube and film in blown film process. The present invention is directed to increase rate of defect free extrusion. Other objects of the present invention are: to lower cost of the used additives, to lower amount of additives during extrusion of polymer melts with fillers, to simplify design of equipment, which is used for processing of polymeric materials, to save energy, which is necessary for processing, to improve product appearance and its mechanical performances. In accordance with the present invention molten thermoplastic polymeric material is comprising additives of elastomers and an elastic layer substantially coats at least a portion of the die cavity inner wall adjacent to the die exit during extrusion. A composition of thermoplastic polymeric material is comprising polyolefins and elastomers, wherein said elastomers are selected from thermoplastic elastomers based on block copolymers or raw rubbers which cure in situ at the die inner wall. In a particular embodiment of the present invention a die inner wall has catalytic activity to appropriate reaction of rubber vulcanization. | 12-18-2008 |
| 20090166919 | Method of Manufacturing Cellulose/Gelatin Composite Viscose Rayon Filament - A method of manufacturing a cellulose/gelatin composite viscose rayon filament that is characterized by including a process in which a spinning process is carried out while a viscose spinning solution is mixed with a gelatin crosslinking solution, which makes it possible to produce a cellulose/gelatin composite viscose rayon having uniform strength and elongation without yarn disconnection. | 07-02-2009 |
| 20090194903 | Non-stringing hot tip - Disclosed is a nozzle tip, having a tip insert attached to a nozzle tip outlet end of a nozzle tip body, the tip insert being made of a material, or having a thermal barrier coating, having a thermal conductivity value of K<10 W/m° K, and having a lower thermal conductivity than that of the nozzle tip body, to preclude the conduction of excessive heat to the nozzle tip outlet end, and promoting a more decisive fracture of the solidified resin at a gate orifice upon ejection of a molded product, thereby eliminating a string of molten resin and a vestige of excessive height, both of which are undesirable, on the molded product. | 08-06-2009 |
| 20090295021 | EXTRUSION OF POLYURETHANE COMPOSITE MATERIALS - Methods of extruding polyurethane composite materials are described. One method includes introducing at least one polyol and organic and/or inorganic filler to a first conveying section of the extruder, transferring the at least one polyol and organic and/or inorganic filler to a first mixing section of an extruder, mixing the at least one polyol and the organic and/or inorganic filler in the first mixing section, transferring the mixed at least one polyol and organic and/or inorganic filler to a second conveying section of the extruder, introducing a di- or poly-isocyanate to the second conveying section, transferring the mixed at least one polyol and organic and/or inorganic filler and the di- or poly-isocyanate to a second mixing section, mixing the mixed at least one polyol and organic and/or inorganic filler with the di- or poly-isocyanate in the second mixing section of the extruder to provide a composite mixture, and transferring the composite mixture to an output end of the extruder. In some embodiments, the method may include pre-mixing a combination of an isocyanate and a polyol before introducing the mixture into the extruder. Some embodiments provide a method of forming a reinforced polymeric composite material in an extruder by pre-heating reinforcing fibers before introducing them to the extruders. Some embodiments provide a method of forming a polymeric composite material in an extruder, wherein the extruder die rotates while its inner surface in movable contact with a fixed solid component to reduce the amount of composite material that accumumlates on the inner surface of the die. Other related methods are also described. | 12-03-2009 |
| 20100181697 | PROCESS FOR PRODUCING A PROTON-CONDUCTING, POLYAZOLE-CONTAINING MEMBRANE - A method for producing a proton-conducting, polyazole-containing membrane, in which
| 07-22-2010 |
| 20110180957 | SURFACES CONTAINING COUPLING ACTIVATOR COMPOUNDS AND REINFORCED RESINS PRODUCED THEREFROM - The invention relates to products and processes employing coupling activator compounds represented by the following formula I: | 07-28-2011 |
| 20120001362 | Spin pack assembly - A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly. | 01-05-2012 |
| 20130026673 | CONTINUOUS CURING AND POST-CURING METHOD - A method of continuous curing and post-curing of a plurality of extruded strands is provided. A plurality of extruded strands is wrapped through a plurality of spindle units rotatably connected to a rigid frame structure. A plurality of dual spindles are provided in a plurality of upper and lower spindle units, wherein each dual spindle comprises a free spinning roller and a driven roller. A chamber that comprises a dual function chamber configured for heating and cooling is supported on the rigid frame structure. The plurality of extruded strands is continuously transferred between the upper spindle units and the lower spindle units such that the plurality of extruded strands runs in a vertical fashion that continuously alternates between the lower spindle units and the upper spindle units. Each of the plurality of strands is transferred independently of each other and continuously passed through the chamber for continuous curing and post-curing. | 01-31-2013 |
| 20130113135 | Process for Producing Exfoliated and/or Dispersed Polymer Composites and/or Nanocomposites via Solid-State/Melt Extrusion (SSME) - A method for solid-state/melt extrusion, as can be accomplished using a unitary extruder apparatus comprising a solid-state shearing zone and a melt-state extrusion zone. | 05-09-2013 |
| 20140175697 | Modified Long Chain Polyamide - A modified long chain polyamide is provided. The modified long chain polyamide is polymerized by monomers comprising a long-aliphatic-chain monomer, and equimolar of an aromatic diacid and polyethyleneoxy diamine. A fiber made from the modified long chain polyamide is also provided. | 06-26-2014 |
| 20150084232 | POLY(ETHYLENE GLYCOL) CROSS-LINKING OF SOFT MATERIALS TO TAILOR VISCOELASTIC PROPERTIES FOR BIOPRINTING - Extrudable hydrogel compositions for printing 3D objects, such as cell growth scaffolds, are provided. Also provided are methods for making the crosslinked hydrogel compositions and the printed objects and methods for culturing cells using the cell growth scaffolds. The hydrogel precursor solutions are aqueous solutions comprising a biocompatible polymer, functionalized polyethylene glycol as a crosslinker and, optionally, cells and/or bioactive factors. | 03-26-2015 |
