Abstract: The present invention concerns preforms made with a new intermediate material composed of a unidirectional layer of carbon fibers with a weight of 100 to 280 g/m2, associated on each of its faces, with a web of thermoplastic fibers having a thickness of 0.5 to 50 microns, preferably 3 to 35 microns, the intermediate material having a total thickness of 80 to 380 microns, preferably from 90 to 320 microns, and a process for manufacturing composite parts from such preforms and the resulting composite parts.

Abstract: 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.

Abstract: 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/m2, associated on each of its faces, with a web of thermoplastic fibers having a thickness of 0.5 to 50 microns, preferably 3 to 35 microns, the intermediate material having a total thickness of 80 to 380 microns, preferably from 90 to 320 microns, and a process for manufacturing composite parts from such a material and the resulting composite parts.

Abstract: The present invention provides 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.

Abstract: The present invention relates especially to an intermediate material comprising, or even constituted exclusively by, an array of individualised ribbons, each ribbon being composed by a tape of unidirectional reinforcing fibres associated, by adhesion, on each of its faces with a veil of thermoplastic fibres, characterised in that the ribbons are disposed in successive layers, in such a way that the ribbons of two successive layers are superposed with or without crossing but without interlacement, the bond between a ribbon and the ribbon or ribbons with which it is superposed being ensured by adhesion, and in that in each layer the ribbons are disposed substantially parallel to each other over at least the major part of their length, while being independent and spaced from each other and in that the ribbons of at least two layers extend in two different directions.

Abstract: Fabric having warp and weft yarns where the filaments in the yarns freely move relatively to each other. The basis weight of the fabric is related to the thickness standard deviation of a stack of three identical fabrics deposited on each other. For basis weights greater than or equal to 40 g/m2 and less than 100 g/m2, the thickness standard deviation is less than or equal to 35 ?m. For basis weights greater than or equal to 100 g/m2 and less than or equal to 160 g/m2, the thickness standard deviation is less than or equal to 50 ?m. For basis weights greater than 160 g/m2 and less than or equal to 200 g/m2, the thickness standard deviation is less than or equal to 60 ?m. For basis weights greater than 200 g/m2 and less than or equal to 400 g/m2, the thickness standard deviation is less than or equal to 90 ?m.

Abstract: A method for spreading a textile sheet where the sheet is caused to run between at least two rotary rollers, the axes of which extend parallel to each other and substantially perpendicular to the running direction of sheet. The sheet under pressure is caused to pass between at least. one pressure generator of the rollers driven into axial oscillation and in phase opposition. At least one pressure generator of the rollers has adjustable pressure values along the generator in order to spread the sheet with a low thickness variability.

Abstract: 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.

Abstract: 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/cm2.

Abstract: The present invention relates to a method for continuously applying on a deposition surface of an intermediate material composed of a unidirectional layer of reinforcing fibers associated on at least one of its faces to a layer of thermoplastic and/or thermosetting material that does not represent more than 10% of the total weight of the intermediate material.

Abstract: An intermediate material made up of an array of individualized ribbons, each ribbon being composed of a tape of unidirectional reinforcing fibers associated, by adhesion, on each of its faces with a veil of thermoplastic fibers.

Abstract: 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 (1) of unidirectional carbon fibres (2) associated on at least one of its faces with at least one conductive component (5) associated or integrated with a permeable layer (3a, 3b, 10) in a thermoplastic material or in a mixture of thermoplastic or thermosetting materials, said permeable layer being in the form of a fabric, a powder, a porous film, a knit, or, preferably, a non-woven (3a, 3b, 10), a process for fabricating composite parts using such a material and the composite parts that can be obtained by such a process.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a method of 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 binder, characterized 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 material thus obtained.

Abstract: An applicator head for cutting yarn into segments of yarn and depositing the segments of yarn on a deposition surface. The applicator head includes a single mechanism that moves the yarn towards said deposition surface and also cuts the yarn into segments.

Abstract: An intermediate material made up of an array of individualised ribbons, each ribbon being composed of a tape of unidirectional reinforcing fibres associated, by adhesion, on each of its faces with a veil of thermoplastic fibres.

Abstract: 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/cm2.

Abstract: A system for treating rectocele in a woman includes an implant comprising a support body from which there extends at least to upper suspension stabilizers each disposed on either side of a sagittal plane on a longitudinal axis, the longitudinal axes forming between them an angle greater than 45°, and two lower suspension stabilizers disposed on either side of the sagittal plane; and an introduction device for inserting the implant in the woman, the introduction device shaped analogous to that of the implant and comprising a hollow body defining a cavity configured to receive the support body of the implant, tubular straps extending from the hollow body with each defining a cavity for receiving one of the suspension stabilizers of the implant, traction means extending from an end of each of the tubular straps, and a cut initiator provided on the hollow body.