Patent application number | Description | Published |
20090121377 | Method of Manufacturing Polytetrafluoroethylene Particle Aggregate and Method of Manufacturing Polytetrafluoroethylene Product - The present invention provides a method of manufacturing a polytetrafluoroethylene (PTFE) product offering better productivity and a higher degree of flexibility in form of the product to be obtained than the conventional methods of manufacturing a PTFE product, and a method of manufacturing PTFE particle aggregate obtained as an intermediate while manufacturing a PTFE product. According to the manufacturing methods, aggregate of PTFE particles including water and a surfactant is obtained by applying force to a dispersion of PTFE particles containing PTFE particles, a surfactant and water as a dispersion medium, where the force makes the PTFE particles approach or contact with each other. Such a manufacturing method may be carried out, for example, with a chamber ( | 05-14-2009 |
20090166929 | Process for Production of Polytetrafluoroethylene Sheet, and Process for Production of Polytetrafluoroethylene Seal Tape - Disclosed is a process for production of a polytetrafluoroethylene (PTFE) sheet, which is superior in productivity compared to conventional processes and can reduce the cost of production. Also disclosed is a process for production of a PTFE seal tape. The processes comprise the following steps (i) to (iii): (i) applying a force to a PTFE particle suspension comprising PTFE particles, a surfactant and water (a dispersion medium) so that the particles can come close to each other or contact with each other, thereby forming a PTFE-containing solid material having the water and the surfactant included therein; (ii) shaping the solid material into a sheet-like form; and (iii) reducing the water content in the sheet-like solid material. | 07-02-2009 |
20100032368 | Method for producing resin porous membrane with adhesive layer, resin porous membrane with adhesive layer, and filter member - The present invention provides a resin porous membrane with an adhesive layer that exhibits excellent bonding precision and can be bonded to an adherend while maintaining the gas permeability of the porous membrane even when the porous membrane is small, and a method for producing the resin porous membrane with the adhesive layer. The present invention also provides the filter member including the resin porous membrane with the adhesive layer. | 02-11-2010 |
20100040927 | Silane crosslinked structure-introduced fuel-cell polymer electrolyte membrane and fuel-cell electrode assembly having the same - An object is to provide an electrolyte membrane that maintains excellent cell characteristics for a long time under high temperature and low water retention, as this is the most important point in fuel cells. | 02-18-2010 |
20100297529 | Process for producing hybrid ion-exchange membranes comprising functional inorganics and graft polymer and electrolyte membranes for use in fuel cells comprising the hybrid ion-exchange membranes - Polymer ion-exchange membranes having outstanding electrical conductivity, water retention and oxidation resistance are produced by the steps of uniformly mixing an organic high-molecular weight resin with functional inorganics having the abilities to promote graft polymerization of polymerizable monomers, adsorb water and conduct protons, irradiating the resulting functional inorganics/polymer membrane to initiate graft polymerization or graft copolymerization of polymerizable monomers having functional groups, and then introducing sulfonic acid groups into the graft chains. | 11-25-2010 |
20120101215 | METHOD OF MANUFACTURING POLYTETRAFLUOROETHYLENE PARTICLE AGGREGATE AND METHOD OF MANUFACTURING POLYTETRAFLUOROETHYLENE PRODUCT - The present invention provides a method of manufacturing a polytetrafluoroethylene (PTFE) product offering better productivity and a higher degree of flexibility in form of the product to be obtained than the conventional methods of manufacturing a PTFE product, and a method of manufacturing PTFE particle aggregate obtained as an intermediate while manufacturing a PTFE product. According to the manufacturing methods, aggregate of PTFE particles including water and a surfactant is obtained by applying force to a dispersion of PTFE particles containing PTFE particles, a surfactant and water as a dispersion medium, where the force makes the PTFE particles approach or contact with each other. Such a manufacturing method may be carried out, for example, with a chamber ( | 04-26-2012 |
20120193285 | METHOD FOR PRODUCING RESIN POROUS MEMBRANE WITH ADHESIVE LAYER, RESIN POROUS MEMBRANE WITH ADHESIVE LAYER, AND FILTER MEMBER - The present invention provides a resin porous membrane with an adhesive layer that exhibits excellent bonding precision and can be bonded to an adherend while maintaining the gas permeability of the porous membrane even when the porous membrane is small, and a method for producing the resin porous membrane with the adhesive layer. The present invention also provides the filter member including the resin porous membrane with the adhesive layer. | 08-02-2012 |
20120247647 | METHOD OF SUCTION OF OBJECT TO BE WORKED UPON SUCTION UNIT AND METHOD OF MANUFACTURE OF CERAMIC CAPACITOR - In the method for allowing a work object ( | 10-04-2012 |
20120306115 | PROCESS FOR PRODUCTION OF POLYTETRAFLUOROETHYLENE SHEET, AND PROCESS FOR PRODUCTION OF POLYTETRAFLUOROETHYLENE SEAL TAPE - Disclosed is a process for production of a polytetrafluoroethylene (PTFE) sheet, which is superior in productivity compared to conventional processes and can reduce the cost of production. Also disclosed is a process for production of a PTFE seal tape. The processes comprise the following steps (i) to (iii): (i) applying a force to a PTFE particle suspension comprising PTFE particles, a surfactant and water (a dispersion medium) so that the particles can come close to each other or contact with each other, thereby forming a PTFE-containing solid material having the water and the surfactant included therein; (ii) shaping the solid material into a sheet-like form; and (iii) reducing the water content in the sheet-like solid material. | 12-06-2012 |
20130008688 | COVERING MATERIAL, COVERED RECTANGULAR ELECTRIC WIRE AND ELECTRICAL DEVICE - Provided is a covering material, in which the covering material is a covering material for covering a rectangular electric wire in such a way that the covering material is spirally wound around the rectangular electric wire in a manner partially overlapping with itself; and the covering material includes a backing having a tensile modulus of elasticity at 25° C. of 5.0 GPa or more. | 01-10-2013 |
20130012396 | COVERING MATERIAL, SUPERCONDUCTING ELECTRIC WIRE AND ELECTRICAL DEVICE - Provided is a covering material, in which the covering material is a covering material for covering a superconducting wire, and a tensile modulus of elasticity at 25° C. is 6.0 GPa or less. Further provided is also a superconducting electric wire, which includes the covering material and a superconducting wire covered with the covering material. Still further provided is an electrical device produced by using the superconducting electric wire. | 01-10-2013 |
20130074691 | WATER-PROOF AIR-PERMEABLE FILTER AND USE OF THE SAME - A water-proof air-permeable filter ( | 03-28-2013 |
20130087042 | WATER-PROOF AIR-PERMEABLE FILTER AND USE OF THE SAME - A water-proof air-permeable filter ( | 04-11-2013 |
20130286460 | POROUS ELECTRODE SHEET, METHOD FOR PRODUCING THE SAME, AND DISPLAY DEVICE - A porous electrode sheet ( | 10-31-2013 |
20150065597 | METHOD FOR PRODUCING POROUS POLYMER FILM AND POROUS POLYMER FILM - Disclosed is a method for producing a porous polymer film. This method includes the steps of: (I) irradiating a polymer film with an ion beam of accelerated ions so as to form a polymer film that has collided with the ions in the beam; and (II) chemically etching the polymer film formed in the step (I) so as to form openings and/or through holes corresponding to tracks of the colliding ions left in the polymer film. In the step (I), the polymer film is placed in an atmosphere with a pressure of 100 Pa or more, and the polymer film placed in the atmosphere is irradiated with the ion beam that has passed through a beam line maintained at a lower pressure than the pressure of the atmosphere and through a pressure barrier sheet disposed at an end of the beam line to separate the beam line from the atmosphere. | 03-05-2015 |