| Sumitomo Electric Fine Polymer, Inc. Patent applications |
| Patent application number | Title | Published |
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| 20120111784 | FILTRATION PURPOSE FLAT-MEMBRANE ELEMENT, FLAT-MEMBRANE-TYPE SEPARATION MEMBRANE MODULE, AND FILTRATION APPARATUS - A flat-membrane element is rendered likely to vibrate by air bubbling from an aeration tube. The element has a sheet-shaped filtering membrane that has oppositely positioned portions placed with a space between them being provided as a flowing path for a treated liquid, a supporter that is placed between the oppositely positioned portions of the filtering membrane to secure the space as a flowing path for a treated liquid, and a periphery-sealing portion that seals the peripheral edges of the oppositely positioned portions of the filtering membrane with a treated-liquid outlet being provided. The filtering membrane and supporter are formed of flexible material and the periphery-sealing portion has flexibility, thereby rendering the entire element flexible. The flat-membrane element has a total thickness of 6 to 1 mm. | 05-10-2012 |
| 20120103904 | SEPARATION MEMBRANE MODULE FOR OIL-CONTAINING WASTEWATER TREATMENT, OIL-CONTAINING WASTEWATER TREATMENT METHOD, AND OIL-CONTAINING WASTEWATER TREATMENT APPARATUS - Provided is a separation membrane module which is suitable for filtration of oil-containing wastewater. The separation membrane module for oil-containing wastewater treatment separates water-insoluble oil from oil-containing wastewater that has high turbidity and/or high temperature. The separation membrane module for oil-containing wastewater treatment is characterized by using a hollow fiber membrane which is composed of an alkali-resistant porous membrane selected from polytetrafluoroethylene (PTFE), polysulfone (PSF), and polyether sulfone (PES) and which has a tensile strength of 30 N or more, and characterized in that each of the hollow fiber membrane and an end-sealing member of the hollow fiber membrane has a heat distortion temperature of 100° C. or higher. | 05-03-2012 |
| 20110236691 | METHOD FOR PRODUCING FIXING-UNIT MEMBER AND FIXING-UNIT MEMBER - A method for producing a fixing-unit member including a base, a rubber elastic layer, and a PFA layer includes a step of forming a primer layer by applying a primer containing a low-melting fluorocarbon resin to the outer circumferential surface of a rubber roller having the rubber elastic layer on the outer circumferential surface of the base; a step of sheathing the rubber roller with a thermally shrinkable tube formed by diametrically expanding a PFA tube so as to have an inner diameter more than the outer diameter of the rubber roller; a step of forming the PFA layer from the thermally shrinkable tube by heating the thermally shrinkable tube so as to be thermally shrunken and fused with the rubber roller; and a reheating step of heating the PFA layer to a temperature equal to or higher than the melting point of the PFA contained in the PFA layer. | 09-29-2011 |
| 20110198277 | FILTRATION APPARATUS - A filtration apparatus for performing solid-liquid separation by immersing a plurality of hollow fiber membranes in a to-be-treated liquid containing a suspended component so that the treated liquid permeates the hollow fiber membranes. The filtration apparatus includes the hollow fiber membranes folded double; a treated liquid collection means communicated with an open-side end of each of the hollow fiber membranes; a holding member for holding a bent portion at an other-end side of each of the hollow fiber membranes with a gap formed between the bent portion of each of the hollow fiber membranes and the holding member; and a gas-jetting means for jetting a cleaning gas from the other-end side of each of the hollow fiber membranes to the open-side end of each of the hollow fiber membranes. A gap for flowing the gas jetted by the gas-jetting means is formed between the hollow fiber membranes held by the holding member and the holding member or/and on at least one part of gaps between the hollow fiber membranes. | 08-18-2011 |
| 20110142509 | HEATING FIXING ROLLER AND PROCESS FOR PRODUCING THE HEATING FIXING ROLLER - Provided is a heating fixing roller which includes a tubular base member and a fluororesin layer provided on an outer circumferential surface of the base member directly or through an adhesive layer, the heating fixing roller being characterized in that the fluororesin layer contains phosphorus-doped tin oxide. The heating fixing roller has a surface resistance capable of stably and effectively preventing the occurrence of electrostatic offsets, and also has an excellent releasing property. Also provided is a process for producing the heating fixing roller, characterized by including the steps of applying a fluororesin dispersion containing an aqueous dispersion of phosphorus-doped tin oxide onto a tubular base member or an adhesive layer disposed on an outer circumferential surface of the tubular base member, and then sintering the fluororesin. | 06-16-2011 |
| 20110052900 | POROUS MULTILAYER FILTER AND METHOD FOR PRODUCING SAME - Provided is a porous multilayer filter which can trap ultrafme particles and in which permeability is high and treatment can be performed at a high flow rate. A porous multilayer filter is characterized by including a support layer | 03-03-2011 |
| 20100320650 | ADHESIVE COMPOSITION, PROCESS FOR PRODUCING THE SAME, MOLDED OBJECTS, AND PROCESS FOR PRODUCING HEAT-SHRINKABLE TUBE - An adhesive composition comprising 100 parts by weight of a fluorine-containing polymer and 2 to 30 parts by weight of an unsaturated compound containing at least one polar group selected from the group consisting of an epoxy group and a carboxyl group, wherein the fluorine-containing polymer has been graft-modified with the polar group-containing unsaturated compound by irradiation of ionizing radiation, a production process thereof, and formed products such as a heat-shrinkable tube equipped with a layer composed of the adhesive composition. | 12-23-2010 |
| 20100285262 | FLUOROCARBON RESIN COMPOSITE, COOKWARE, COOKER, ROLLER FOR OFFICE AUTOMATION EQUIPMENT, BELT FOR OFFICE AUTOMATION EQUIPMENT, AND METHOD FOR PRODUCING THEM - [Object] There are provided a fluorocarbon resin composite having improved abrasion resistance while nonadhesiveness, which is a feature of a fluorocarbon resin, is maintained, cookware, and a roller and a belt for use in office automation equipment. | 11-11-2010 |
| 20100279045 | POLYIMIDE TUBE, PROCESS FOR PRODUCING THE SAME AND FIXING BELT - Provided are a polyimide tube including a polyimide resin composition, wherein the polyimide resin composition contains a polyimide resin in which an acicular highly thermally conductive filler such as carbon nanotubes is dispersed in 15 volume percent or more relative to the total volume of the composition; the acicular highly thermally conductive filler has an orientation of 1.3 or more, the orientation being represented by the modulus of elasticity of the polyimide resin composition in the circumferential direction/the modulus of elasticity of the polyimide resin composition in the axial direction; and the polyimide tube has high thermal conductivity, is excellent in terms of mechanical strength and indentation strength, and provides a high fixing property and an excellent offsetting property; a process for producing such a tube; and a fixing belt including such a tube serving as a base member. | 11-04-2010 |
| 20100276355 | SEPARATION MEMBRANE ELEMENTS, SEPARATION MEMBRANE MODULE, AND PROCESS FOR PRODUCING SEPARATION MEMBRANE ELEMENT - The invention offers a separation membrane element that can be produced by a method in which a membrane-sealing portion is formed by, first, immersing end portions of hollow-fiber-shaped porous separation membranes in a resinous liquid and, then, curing the resin, that has a feature in that the membrane-sealing portion is formed of a casting resin and pores of the hollow-fiber-shaped porous separation membranes are filled with a pore-filling resin at the portion at which the membranes are in contact with the membrane-sealing portion, so that the casting resin is strongly bonded with the pore-filling resin, and that has the hollow-fiber-shaped porous separation membranes whose basal portions are flexible, so that breakage of the basal portions and leakage of gas or liquid are less likely to occur when in use; a separation membrane element that has a feature in that in the membrane-sealing portion, at least the surface at a side that is to be in contact with a liquid to be treated is formed of a thermosetting fluororesin, so that the membrane-sealing portion has excellent chemical resistance comparable to that of the conventional membrane-sealing portion formed of a thermoplastic fluororesin; separation membrane modules having these separation membrane elements as constituting elements; and a method of producing the separation membrane element. | 11-04-2010 |
| 20100258497 | SEPARATION MEMBRANE ELEMENT FOR FILTRATION AND MEMBRANE MODULE FOR FILTRATION - Provided is a separation membrane element for filtration which has excellent filtration performance and is excellent in terms of chemical resistance and mechanical strength and with which a stable permeation flow rate can be obtained over a long period of time. A separation membrane element for filtration is configured to perform solid-liquid separation treatment by being immersed in a liquid to be treated which contains a suspended component, and includes a cylindrical filtration membrane obtained by forming a porous sheet including at least an expanded porous PTFE (polytetrafluoroethylene) membrane into a cylindrical shape and in which a hollow surrounded by the porous sheet serves as a treated-liquid passage; a support member for maintaining the hollow serving as the treated-liquid passage; and sealing parts which seal both axial-direction ends of the cylindrical filtration membrane so as to leave at least one treated-liquid takeout opening open. | 10-14-2010 |
| 20100203310 | FLUORORESIN THIN FILM, FLUORORESIN COMPOSITE, POROUS FLUORORESIN COMPOSITE, MANUFACTURING METHODS THEREOF, AND SEPERATION MEMBRANE ELEMENT - There are provided a fluororesin thin film which is composed of a fluororesin, which has a thickness of 20 μm or less and a Gurley's number of 300 seconds or more, and which includes no defects, such as voids and/or cracks; a method for manufacturing the fluororesin thin film in which after a fluororesin dispersion including a dispersing medium and a fluororesin powder dispersed therein is applied on a flat and smooth foil, the dispersing medium is dried, and the fluororesin powder is sintered; the fluororesin dispersion; a fluororesin composite including a porous base material and the fluororesin thin film; a manufacturing method thereof a porous fluororesin composite formed by stretching the fluororesin composite; and a separation membrane element using the porous fluororesin composite. | 08-12-2010 |
| 20100167890 | OA APPARATUS ROLLER - The invention offers an OA apparatus roller that has a surface layer formed by applying fluororesin and baking it, that has various excellent properties with-out impairing the parting ability and thermal conductivity, and that is suitable for mass production. An OA apparatus roller is produced by forming an elastic layer and a surface layer in this order on a core metal. In the roller, the surface layer is composed of a plurality of fluororesin layers and has a thickness of 6 to 30 μm. An OA apparatus roller has a structure in which of the multiple fluororesin layers forming the surface layer, at least one layer is a fluororesin layer containing filler. An OA apparatus roller has a structure in which of the multiple fluororesin layers forming the surface layer, the outer-most layer is a fluororesin layer containing no filler and at least one layer other than the outermost layer is a fluororesin layer containing filler. | 07-01-2010 |
| 20100104335 | FIXING ROLLER/FIXING BELT, AND PROCESS FOR MANUFACTURING THE SAME - A fixing roller/fixing belt having an elastic layer and a surface layer formed on a substrate material in the enumerated order, wherein the surface layer is a layer formed by thermally shrinking a PFA tube, and the surface layer and the elastic layer are bonded together through a PFA-containing adhesive material. In particular, a fixing roller/fixing belt in which the ratio of heat shrinkage of the PFA tube forming the surface layer is 3 to 20%. Also, a fixing roller/fixing belt, in which the quantity of PFA contained in the PFA-containing adhesive material is 20 to 30 wt %. | 04-29-2010 |
| 20100096317 | FLAT SHEET MEMBRANE ELEMENT FOR FILTRATION AND FLAT SHEET MEMBRANE FILTRATION MODULE - A flat sheet membrane element for performing solid-liquid separation by immersion in a liquid to be treated which contains a suspended component includes sheet-shaped filtration membranes disposed opposite to each other with a space for a treated liquid flow path, a support portion for securing the space for the treated liquid flow path, and a peripheral sealing portion for sealing the peripheral edges of the filtration membranes arranged opposite to each other so as to form at least one treated liquid outlet, the filtration membranes including at least expanded PTFE (polytetrafluoroethylene) porous membranes. | 04-22-2010 |
| 20100055365 | POLYIMIDE TUBE, METHOD FOR PRODUCTION THEREOF, METHOD FOR PRODUCTION OF POLYIMIDE VARNISH, AND FIXING BELT - A polyimide tube composed of a polyimide resin composition in which 5 to 23.5 volume percent of boron nitride and 1 to 15 volume percent of an acicular substance are dispersed as a filler in a polyimide resin on the basis of the total volume of the composition, a method of producing the tube, a method of producing a polyimide varnish used for producing the tube, and a fixing belt including the tube as a base member are provided. | 03-04-2010 |
| 20090236280 | FILTRATION APPARATUS - A filtration apparatus for performing solid-liquid separation by immersing a plurality of hollow fiber membranes in a to-be-treated liquid containing a suspended component includes the hollow fiber membranes folded double, a treated liquid collection means communicated with an open end of each of the hollow fiber membranes, a holding member for holding a bent portion of each of the hollow fiber membranes with a gap formed between the bent portion and the holding member, and a gas-jetting means for jetting a cleaning gas from the bent side of each of the hollow fiber membranes to a side of the open end. A gap for flowing the gas jetted by the gas-jetting means is formed between the hollow fiber membranes and the holding member or/and in at least one part of gaps between the hollow fiber membranes. | 09-24-2009 |
| 20090232564 | METHOD OF PRODUCING OA APPARATUS ROLLER AND OA APPARATUS ROLLER - The invention offers a method of producing an OA apparatus roller that can increase the thermal conductivity of the surface layer composed of a fluororesin layer by decreasing its thickness, that has an excellent parting ability, that can prevent the rubber layer from deteriorating, and that is free from foreign matters adhering onto the inner surface of a hollow cylindrical mold even when the hollow cylindrical mold is used. The invention also offers an OA apparatus roller produced by the foregoing method. The method of producing an OA apparatus roller is provided with a step of forming an elastic layer and a surface layer in this order on a core metal. In this method, the surface layer is formed by using a fluororesin dispersion and the fluororesin dispersion contains a surfactant, a film-thickening agent, and a viscosity-increasing agent with a total content of 1.0 to 5.0 wt %. | 09-17-2009 |
| 20090176637 | OA APPARATUS ROLLER - The invention offers an OA apparatus roller that has a surface layer formed by applying fluororesin and baking it, that has various excellent properties without impairing the parting ability and thermal conductivity, and that is suitable for mass production. An OA apparatus roller is produced by forming an elastic layer and a surface layer in this order on a core metal. In the roller, the surface layer is composed of a plurality of fluororesin layers and has a thickness of 6 to 30 μm. An OA apparatus roller has a structure in which of the multiple fluororesin layers forming the surface layer, at least one layer is a fluororesin layer containing filler. An OA apparatus roller has a structure in which of the multiple fluororesin layers forming the surface layer, the outermost layer is a fluororesin layer containing no filler and at least one layer other than the outermost layer is a fluororesin layer containing filler. | 07-09-2009 |
| 20090085260 | BIODEGRADABLE MATERIAL AND PROCESS FOR PRODUCING THE SAME - A biodegradable aliphatic polyester, such as polylactic acid, is mixed with a monomer having allyl and molded into a molding having the crosslinking degree of the biodegradable aliphatic polyester increased. Thereafter, the molding is exposed to ionizing radiation to thereby obtain a molding excelling in heat resistance. Triallyl isocyanurate or triallyl cyanurate is used as the monomer having allyl. | 04-02-2009 |
| 20090047048 | PRESSURE ROLLER AND METHOD FOR PRODUCTION THEREOF - A pressure roller includes a rubber layer containing organic microballoons and a heat-resistant resin layer arranged in that order on a roller base, wherein an intermediate rubber layer having a heat conductivity of 1.0 to 4.0 W/m·K is arranged between the rubber layer containing the organic microballoons and the heat-resistant resin layer. There is provided a method for producing the pressure roller. | 02-19-2009 |
| 20080317523 | Fixing Belt - A polyimide-based resinous cylindrical body characterized in that 3 to 20% by volume of fluororesin having a number average molecular weight of more than 56000 and equal to or less than 3000000 is combined in the resinous cylindrical body. In the resinous cylindrical body, preferably BN is further combined as a heat conductive element by the amount of 5 to 40% by volume in the resinous cylindrical body. The resinous cylindrical body and a fixing belt having an inner layer made of the resinous cylindrical body exhibit excellent properties in terms of friction with a slide member, resulting superior durability and image formation. | 12-25-2008 |
| 20080213569 | Film for Pressure Roller - The invention aims to provide a film for a pressure roller, without requiring an adhesive layer and capable of maintaining or improving conventionally obtained characteristics such as a tensile strength, a tear strength and an excellent releasing property with a recording material. The invention provides a film for a pressure roller, including a polyimide layer in which fluorinated resin powder is dispersed. The fluorinated resin powder is dispersed in an amount of from 10 to 20 vol % in the polyimide layer, and has an average particle size of from 1 to 20 μm. | 09-04-2008 |
