Patent application number | Description | Published |
20090029612 | Reinforcing woven fabric and process for producing the same - To provide a reinforcing woven fabric, which is excellent in deformability, capable of following a complicated shape and excellent in retention of the shape, and a preform using it, a fiber reinforced plastic molded component and a process for producing them. Provided is a reinforcing woven fabric where a resin material is stuck on at least one surface of a fabric substrate containing a plurality of reinforcing fiber bundles, then the resin material stuck over two or more reinforcing fiber bundles is peeled from a part of the two or more reinforcing fiber bundles by varying the relative position of a plurality of reinforcing fiber bundles constituting the fabric substrate, wherein the maximum value of load till a tensile strain in a non fiber axial tensile test reaches 1% is in a range of 0.01 to 0.75 N. | 01-29-2009 |
20090202826 | PROCESS FOR PRODUCING FIBER REINFORCED RESIN - A process for producing a fiber reinforced resin which comprises placing at least a reinforcing fiber substrate in a cavity of a mold, injecting a resin into the cavity, and curing the resin, characterized in that a substrate for forming a skin layer, and a resin distribution medium, which is located between the substrate for forming the skin layer and the reinforcing fiber substrate and in which the ratio of the coefficient of impregnation thereof to that of the substrate for forming the skin layer is 1.5-10, are disposed on at least one surface of the reinforcing fiber substrate via an interlayer having a cover factor of 90%-100% and comprising at least one woven fabric. The process diminishes pinhole generation in the skin layer in RTM, and can reduce the necessity of a repair step in, e.g., a painting step as a later step, thereby improving productivity. | 08-13-2009 |
20110079348 | PROCESS FOR PRODUCING A REINFORCING WOVEN FABRIC, A PREFORM AND A FIBER REINFORCED PLASTIC MOLDED COMPONENT - A process for producing a reinforcing woven fabric includes sticking a resin material on at least one surface of a fabric substrate including a plurality of reinforcing fiber bundles and varying the relative position of a plurality of reinforcing fiber bundles to peel the resin material stuck over two or more reinforcing fiber bundles from a part of the two or more reinforcing fiber bundles. | 04-07-2011 |
Patent application number | Description | Published |
20120315455 | PREFORM AND METHOD FOR MANUFACTURING THE SAME - A method for manufacturing a preform and a preform manufactured by the method includes a plurality of substrates to which a binder has been affixed laminated to form a laminate and a forming die is used to form the laminate, thereby manufacturing a preform which is a precursor in resin transfer molding (RTM) of fiber reinforced plastic (FRP). During the manufacturing the laminate is pressed into a predetermined shape by the forming die, the binder is melted by directly heating the binder of the substrates in the laminate being pressed or both and is cooled thereafter to solidify the binder, and the substrates are adhered between layers thereof to retain the formed shape of the preform. | 12-13-2012 |
20130328236 | METHOD FOR PRODUCING FRP - A method for producing FRP in which a preform made of a reinforcing fiber base material is disposed in a cavity of a mold, a resin injection path and a suction path that sucks at least air are provided to the mold, and resin from the resin injection path is caused to flow in the direction toward the suction path in the cavity to be impregnated into the preform, wherein a high flow resistance region for partially making the resin flowing in the preform hardly flow is formed in the preform itself, and a flow front of the resin flowing in the direction toward the suction path through the high flow resistance region is controlled to settle within a permitted region that has been predetermined relative to a shape of a product to be molded. | 12-12-2013 |
20150014883 | METHOD OF MANUFACTURING FIBER-REINFORCED RESIN - A method of manufacturing a fiber-reinforced resin in which resin is injected into a reinforcing-fiber substrate placed in a molding die from an injection port opened in a direction facing a surface of the reinforcing-fiber substrate, and the resin is then impregnated into the reinforcing-fiber substrate includes forming a space for injected-resin transit passage in the reinforcing-fiber substrate in the molding die by at least partially removing in advance a section of the reinforcing-fiber substrate located directly below the injection port in a thickness direction of the reinforcing-fiber substrate, and impregnating the resin injected from the injection port into the reinforcing-fiber substrate through the space for injected-resin transit passage. | 01-15-2015 |
20150048546 | RTM METHOD - An RTM method in which a preform formed from a reinforcing fiber substrate is placed in a cavity of a molding die, and resin is injected from a plurality of injection ports into the cavity and impregnated into the preform, includes disposing the plurality of injection ports in first positions in a central section of the cavity corresponding to positions of the preform located in a product area of an article to be finally molded and second positions located in a periphery of the cavity corresponding to positions of the preform outside the product area of the article to be finally molded or corresponding to positions inside the cavity but outside an area of the preform, and causing the timing of closing the injection ports after resin injection to be different from each other between injection ports disposed in the first positions and injection ports disposed in the second positions. | 02-19-2015 |