Patent application number | Description | Published |
20100173143 | METHOD FOR MAKING COMPOSITE PARTS HAVING AT LEAST ONE CURVED AREA - The invention relates to a method for making a composite part including an assembly of superimposed webs of reinforcement threads imbedded at least partially in a polymer matrix, said part including at least one curved area and the method comprising steps of draping or stacking plies of a composite material, characterised in that, in at least one area adjacent to a curved area, at least one draping or stacking step is carried out with a ply of composite material, that comprises a web, or twisted thread web, including at least one twisted reinforcement thread in order to at least compensate the length differences of the extreme paths of the thread on either side of the width as measured in a direction parallel to the surface of the web; the invention also relates to the composite materials thus obtained. | 07-08-2010 |
20100173152 | METHOD FOR MAKING A COMPOSITE MATERIAL HAVING AT LEAST ONE TWISTED THREAD DEPOSITED THEREIN - The invention relates to a method for making a composite material in which at least one reinforcement thread is deposited on a surface according to a path having at least one curved area on the deposition surface, wherein the reinforcement thread is connected to the surface by a polymeric hinder. characterised in that a twist is applied to the reinforcement thread before the deposition thereof at least in order to compensate the length differences of the extreme paths of the thread on either side of the width as measured in a direction parallel to the deposition surface: the invention also relates to the composite materials thus obtained. | 07-08-2010 |
20110309543 | HEAD FOR THE APPLICATION OF REINFORCING THREADS ON A DEPOSITION SURFACE - Applicator head for reinforcement yarns ( | 12-22-2011 |
20120015135 | NOVEL INTERMEDIATE MATERIAL WITH CONSTANT WIDTH FOR THE DIRECT PROCESS PRODUCTION OF COMPOSITE COMPONENTS - The invention concerns a process for preparing a ribbon of reinforcement strands or filaments associated on each of its faces with a polymeric binder, said ribbon having a given width substantially constant over its entire length, in which the strands or filaments extend in a direction parallel to the length of the ribbon, wherein it comprises the following steps:
| 01-19-2012 |
20120015167 | NOVEL REINFORCEMENT MATERIALS, SUITABLE FOR THE CONSTITUTION OF COMPOSITE PARTS - The present invention concerns a new intermediate material to be associated with a thermosetting resin for making composite parts, consisting of a unidirectional layer of carbon fibers with a weight of 100 to 280 g/m | 01-19-2012 |
20120100354 | NOVEL INTERMEDIATE MATERIAL INTENDED TO LIMIT THE MICROCRACKING OF COMPOSITE PARTS - The invention relates to an intermediate product intended for the production of a composite part in combination with a resin matrix, formed by at least two unidirectional sets of reinforcing yarns, the yams of each set extending in a different direction, whereby the sets are interlinked by means of stitching or knitting using at least one stitching or knitting yarn. The invention is characterized in that the stitching or knitting yarn has a yarn count of less than or equal to 30 dTex, preferably less than or equal to 25 dTex, in accordance with standard EN ISO 2060. | 04-26-2012 |
20120202004 | Multiaxial Stack Rigidly Connected By Means Of Weld Points Applied By Means Of Inserted Thermoplastic Webs - The present invention relates to a stack of fibrous materials including at least two unidirectional carbon fiber layers, each extending in different directions, wherein each one of the unidirectional layers is connected by means of at least one of the surfaces thereof to an adjacent web of thermoplastic fibers, at least one web being inserted between two consecutive unidirectional layers, characterized in that the link between each unidirectional layer and each adjacent web is provided by the web, by weld points which produce an intermittent overall weld, and in that said weld points also guarantee the cohesion of the stack, as well as the method for manufacturing same. | 08-09-2012 |
20120237707 | NOVEL INTERMEDIATE MATERIALS PRODUCED BY MEANS OF INTERTWINNING BY INTERLACING VOILE YARNS - The present invention provides an intermediate material composed of an assembly of overlapping and interlaced tapes, characterized in that at least some of the tapes, preferably all of the tapes, known as veiled tapes, are composed of a series of reinforcing yarns or filaments that extend in a direction parallel to the length of the tape to form a unidirectional sheet that is associated on each of its faces with a nonwoven formed from thermoplastic fibers, said two nonwovens providing said veiled tape with cohesiveness because of their thermoplastic nature, to a production method using said material for producing composite parts, and to the composite parts obtained. | 09-20-2012 |
20130061459 | DIFFUSION LAYER FOR AN ELECTROCHEMICAL DEVICE AND METHOD FOR PRODUCING SUCH A DIFFUSION LAYER - A method for producing a diffusion layer of an electrochemical device, including: superimposition of multiple unidirectional webs of carbon filaments, filaments of each web positioned parallel with, and next to, one another; needle punching of the webs, breaking a proportion of the filaments such that broken portions of the filaments are tangled with other filaments of the webs; and cutting a proportion of the multiple unidirectional webs, the carbon filaments forming one electrically conducting outer surface of the diffusion layer. The needle punching is accomplished all the way through the multiple unidirectional webs, and/or through two principal opposite faces of the multiple unidirectional webs, and/or with an impact density against the multiple unidirectional webs of between approximately 100 and 300 impacts/cm | 03-14-2013 |
20130108823 | NOVEL INTERMEDIATE REINFORCING MATERIAL CONSISTING OF AN ARRAY OF SPACED-APART YARNS/WEBS | 05-02-2013 |
20140165529 | COMPOSITE MATERIAL HAVING AT LEAST ONE TWISTED THREAD DEPOSITED THEREIN - The invention relates to a composite material in which at least one reinforcement thread is deposited on a surface according to a path having at least one curved area on the deposition surface, wherein the reinforcement thread is connected to the surface by a polymeric binder. A twist is applied to the reinforcement thread before the deposition thereof at least in order to compensate the length differences of the extreme paths of the thread on either side of the width as measured in a direction parallel to the deposition surface. | 06-19-2014 |
20140322511 | VEILED TAPE WITH IMPROVED RESISTANCE TO DELAMINATION - The present invention provides a method of preparing a tape with a given width, said tape being composed of an assembly of filaments extending in a direction substantially parallel to the length of the tape, and between which a powder of a polymeric material is distributed, each face of said tape being associated with a nonwoven of polymeric fibers, the method comprising: —a step consisting in depositing powder formed from a polymeric material on at least one of the faces of the tape, preferably on both faces; —a step consisting in heating in order to at least partially soften the deposited powder then of tightening the tape in order to adjust its width to the width desired and to cause at least a portion of the powder to penetrate into the thickness of the tape between the filaments, and of cooling the tape to fix its width and provide cohesiveness because of the powder; and —to tapes obtained using said method. | 10-30-2014 |
20140335361 | FIBRE REINFORCED MATERIALS - A process for the production of a fibre reinforced thermoset resin. The process comprises impregnating a structural fibrous layer with a liquid thermosetting resin composition to form a prepreg, and subsequently curing the thermosetting resin, wherein at the time of impregnation an additional resin component is provided separately to the prepreg, the thermosetting resin composition being free of said additional resin component other than the thermosetting resin, and additional resins are provided to become integrated with the thermosetting resin during curing. | 11-13-2014 |
20150050450 | MATERIAL WITH IMPROVED CONDUCTIVITY PROPERTIES FOR THE PRODUCTION OF COMPOSITE PARTS IN COMBINATION WITH A RESIN - The invention relates to a material (I) adapted for the production of composite parts by a process in which a thermoplastic or thermosetting matrix is diffused within said material, comprising at least one sheet ( | 02-19-2015 |