Hexcel Reinforcements Patent applications |
Patent application number | Title | Published |
20150028514 | USE, IN THE MANUFACTURE OF A COMPOSITE COMPONENT, OF A PENETRATION OPERATION TO IMPROVE THE TRANSVERSE ELECTRIC CONDUCTIVITY OF THE COMPOSITE COMPONENT - The invention relates to the use, in the fabrication of a composite part formed from a stack of reinforcement materials of carbon fibres between which is sandwiched at least one layer of thermoplastic or thermosetting material or a mixture of thermoplastic and thermosetting materials, of an operation of spot application of transverse forces on at least two layers constituting the stack and positioned as neighbours in the stack, so as to successively traverse at least one reinforcement material and at least one layer of thermoplastic or thermosetting material or a mixture of thermoplastic and thermosetting materials placed in superposed position, to improve the transverse electrical conductivity of the composite part obtained. | 01-29-2015 |
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 |
20130108823 | NOVEL INTERMEDIATE REINFORCING MATERIAL CONSISTING OF AN ARRAY OF SPACED-APART YARNS/WEBS | 05-02-2013 |
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 |
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 |
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 |
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 |
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 |
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 |
20110309543 | HEAD FOR THE APPLICATION OF REINFORCING THREADS ON A DEPOSITION SURFACE - Applicator head for reinforcement yarns ( | 12-22-2011 |
20080223505 | Machine for producing multiaxial fibrous webs - A plurality of unidirectional sheets ( | 09-18-2008 |