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| Number | Title | Issue Date |
| 8097195 | Method for energy usage when cooling extrusion profiles The invention relates to a method for energy usage during the cooling of extrusion profiles, preferably pipes, wherein energy is supplied in the form of heat for melting the plastic and heat is withdrawn from the plastic again for shaping at least in the devices of ... | 01/17/2012 |
| 7186102 | Apparatus and method for low-density cellular wood plastic composites A low-pressure CO2 tank or an air compressor with a refrigerated air dryer is attached either at or after the vent zone of a standard twin-screw extruder. During or after extrusion, the gas is dissolved in the wood-plastic melt. The CO2 expands... | 03/06/2007 |
| 7186457 | Cellulosic composite component A component such as a siding panel comprised of a PVC/wood flour composite. Another embodiment is a component such as a siding panel that is made from a PVC/CPE/wood flour composite. The cellulosic composite may be extruded through a die and then bent into the shape... | 03/06/2007 |
| 7017352 | Cooling of extruded and compression molded materials The present invention relates to a system and a method for cooling extruded and molded materials. The present invention is especially useful to thoroughly cool an extrudate by directing a cooling fluid toward a surface of the extrudate (e.g., an interior surface tha... | 03/28/2006 |
| 6971211 | Cellulosic/polymer composite material The present invention is a component such as a siding panel that may be comprised of various formulations of cellulosic/polymer composite materials. One embodiment of the present invention is a siding panel that is comprised of a cellulosic/PVC composite material. T... | 12/06/2005 |
| 6958185 | Multilayer synthetic wood component A multilayer synthetic wood component comprised of a layer of a first synthetic wood composition that is secured to a layer of a second synthetic wood composition. As a result, the present invention may provide a component that utilizes the beneficial characteristic... | 10/25/2005 |
| 6096258 | Method and apparatus for forming a cellulose article including solvent recovery means A method and apparatus is disclosed for forming a cellulose film suitable for direct food contact by precipitation from a solution of cellulose water and a tertiary amine oxide cellulose solvent. After precipitation of a cellulose gel from the solution, t... | 08/01/2000 |
| 5942167 | Method of making a cellulose food casing including solvent recovery Disclosed is a method of extruding a solution of cellulose and an amine oxide cellulose solvent as a tube about a sizing mandrel which diametrically stretches the extruded tube. An aqueous poly(ethylene oxide) solution is introduced into the interior of t... | 08/24/1999 |
| 5891572 | Method of preparing membranes from blends of polymers Improved anisotropic fluid separation membranes are prepared from blends of polymers with surface energy differences. The membranes are formulated by processes wherein low surface energy polymer with desirable fluid separation and permeation characteristi... | 04/06/1999 |
| 5827462 | Balanced cooling of extruded synthetic wood material An extrusion process is described in which a balanced cooling apparatus is incorporated. The cooling apparatus provides a coolant bath to an extruded component.... | 10/27/1998 |
| 5736087 | Method for finishing of sausage casings The present invention relates to improved methods for the regeneration of cellulosic artificial sausage casings including the steps of immersing the regenerating casing in at least one regeneration bath including a solution of sodium sulfate and sulfuric ... | 04/07/1998 |
| 5720914 | Method of producing a polyolefinic film by a water quench process A method for producing a polyolefinic film having ultraviolet stabilizers by extruding a hot molten polymer into a water quench bath for solidification of the film. An active halogen is added to the water quench bath in order to reduce the water carryover... | 02/24/1998 |
| 5653889 | Process for filtering polyamide oligomers from aqueous streams containing the same A filter element surface is coated with particulate polyamide which serves as a filter aid to trap polyamide oligomers suspended in water. The particulate polyamide is preferably coated onto a surface of a bag filter so that polyamide oligomers flowing th... | 08/05/1997 |
| 5639484 | Spinning cell A spinning cell for producing lyocell fibre by spinning a solution of cellulose in an organic solvent through an air gap into a spin bath has nozzles to create a cross-draught through the air gap.... | 06/17/1997 |
| 5618432 | Process for solvent recovery A process for recovery and reuse of liquids used as solvents and diluents in a chemical reaction and/or the processing of substances, the process include the introduction of a solvent, a diluent, and a substance to be reacted and/or processed into a proce... | 04/08/1997 |
| 5609892 | Apparatus for the production of encapsulated foaming concentrates The present invention is directed to apparatus for compounding and pelletizing of chemical foaming agents in a high melt resin carrier and producing unique, uniform encapsulated and pelletized chemical foaming concentrates. More specifically, the present ... | 03/11/1997 |
| 5441689 | Process of making regenerated cellulose articles Aqueous solutions of an amine N-oxide such as N-methyl morpholine N-oxide used in the manufacture of regenerated cellulose can be purified by passage through a strongly basic anion-exchange resin. The resin is regenerated by treatment with (1) an aqueous ... | 08/15/1995 |
| 5151227 | Process for continuous spinning of hollow-fiber membranes using a solvent mixture as a precipitation medium Microporous hollow fiber polysulfone membranes can be prepared continuously by using a particular combination of casting solution and precipitation solution formulations, and casting conditions. The concentration of components in the precipitation solutio... | 09/29/1992 |
| 4927574 | Water bath film cooling apparatus and method An apparatus for the production of a tubular thermoplastic film, and more particularly, a water bath film cooling apparatus for the rapid quenching of an extruded tubular thermoplastic film so as to enhance the speed of cooling thereof, and increase the s... | 05/22/1990 |
| 4853168 | Process for spinning starch fibers Raw starch is slurried in an aqueous solution containing up to and above saturation levels of an ammonium sulfate, ammonium monobasic or dibasic phosphate, sodium sulfate or mixtures thereof. The slurry is then cooked at temperatures above about 150° C. ... | 08/01/1989 |
| 4744932 | Process for forming a skinless hollow fiber of a cellulose ester A skinless hollow fiber of a cellulose ester material is formed by providing an aqueous coagulation bath having a tube-in-ring jet immersed therein and extruding a spinning solution comprising at least one cellulose ester material and a solvent therefor d... | 05/17/1988 |
| 4702876 | Variable-aperture process for the manufacture of filaments from aromatic polyamides Fibers are air-gap spun from a polymeric spinning mass comprising an aromatic polyamide (such as poly-p-phenyleneterephthalamide) by extrusion through a spinneret, passing through an air-gap, passage through a liquid (such as water), and exiting the liqui... | 10/27/1987 |
| 4683094 | Process for producing oriented polyolefin films with enhanced physical properties An improved method for the production of polyolefin film by extruding molten film from an annular die in a tubular form into an extrusion zone is disclosed wherein physical properties are enhanced by controlling polymeric crystalline growth. The method in... | 07/28/1987 |
| 4612027 | Method and apparatus for forming glass fibers A feeder for the production of glass filaments is provided with dripless and non-dripless fields of stream defining orifices to, in part, have the advantages of dripless as well as non-dripless type feeders.... | 09/16/1986 |
| 4488891 | Method for forming glass fibers A glass fiber attenuation apparatus and process wherein molten glass is supplied from a molten glass body to an orifice plate at substantially atmospheric pressure to prevent molten glass flow through an orifice at which attenuation has ceased, thus permi... | 12/18/1984 |
| 4470943 | Low friction plastic track and extrusion process An elongated plastic track for use in a gravity feed display is extruded from a mixture of high impact polystyrene and dimethylpolysiloxane.... | 09/11/1984 |
| 4237083 | Process of manufacturing a microporous sheet material A process of manufacturing a microporous sheet by forming a blend of a polyolefin, silica and a water insoluble plasticizer, forming a sheet from the blend, and contacting the sheet with water for a time sufficient to render the sheet microporous. The pla... | 12/02/1980 |
| 4178431 | Aromatic copolyamide fiber from benzidine sulfone or diamino phenanthridone Fibers of a copolyamide derived from a diamine component including 10 to 50 mole % of benzidine sulfone or 2,7-diaminophenanthridone and 90 to 50 mole % of p-phenylene diamine and a dicarboxylic acid component derived from a reactive derivative of terepht... | 12/11/1979 |
| 4159200 | Air nozzle assembly for use in apparatus for producing glass fibers In an apparatus for producing glass fibers wherein an orifice plate formed with a greater number of orifice holes in high density is provided to draw glass fibers therethrough and air nozzle means is provided for impinging air flow against the undersurfac... | 06/26/1979 |
| 4073837 | Process for producing wholly aromatic polyamide fibers A process for producing wholly aromatic polyamide fibers by extruding a spinning solution of a wholly aromatic polyamide in an amide solvent into an aqueous coagulating bath containing inorganic salts, said process comprising feeding an aqueous coagulatin... | 02/14/1978 |
