EP0659922A1 - Textile reinforcing layer useful in the manufacture of composite materials - Google Patents

Textile reinforcing layer useful in the manufacture of composite materials Download PDF

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Publication number
EP0659922A1
EP0659922A1 EP19940420367 EP94420367A EP0659922A1 EP 0659922 A1 EP0659922 A1 EP 0659922A1 EP 19940420367 EP19940420367 EP 19940420367 EP 94420367 A EP94420367 A EP 94420367A EP 0659922 A1 EP0659922 A1 EP 0659922A1
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EP
European Patent Office
Prior art keywords
textile
material
fibers
layers
reinforcing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19940420367
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German (de)
French (fr)
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EP0659922B1 (en
Inventor
André Fourezon
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Chomarat Auguste Les Fils and Cie Ets
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Les Fils D'auguste Chomarat & Cie Ets
Chomarat & Cie
Chomarat Auguste Les Fils and Cie Ets
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Priority to FR9315843A priority Critical patent/FR2714397B1/en
Priority to FR9315843 priority
Application filed by Les Fils D'auguste Chomarat & Cie Ets, Chomarat & Cie, Chomarat Auguste Les Fils and Cie Ets filed Critical Les Fils D'auguste Chomarat & Cie Ets
Publication of EP0659922A1 publication Critical patent/EP0659922A1/en
Application granted granted Critical
Publication of EP0659922B1 publication Critical patent/EP0659922B1/en
Anticipated expiration legal-status Critical
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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209Inorganic fibres
    • D04H1/4218Glass fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282Addition polymers
    • D04H1/4291Olefin series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326Condensation or reaction polymers
    • D04H1/4334Polyamides
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326Condensation or reaction polymers
    • D04H1/435Polyesters
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00Other non-woven fabrics

Abstract

Textile reinforcement usable for the production of a composite material, consisting, when it is considered in place inside the said composite material after production, of two actual textile reinforcing layers placed on either side of a central layer endowing the said material with thickness, the said central layer consisting of a sheet based on synthetic fibres, of high unit titre, and which have received, before being converted into sheets, a treatment giving them a permanent waviness (or curl). It is characterised in that at least one of the textile reinforcing layers is covered with a fibrous web based on chemical fibres, of lower titre than that of the fibres forming the inner layer and which have also received a treatment giving them a permanent waviness or curl, the various layers being bonded together by needling.

Description

  • L'invention concerne un perfectionnement apporté aux armatures textiles utilisées pour la réalisation de matériaux composites, c'est-à-dire d'articles à base de résine (polyester ou autres) armés d'une nappe textile de renforcement. The invention relates to an improvement to textile reinforcement used to make composite materials, that is to say resin articles (polyester or other) armed with a textile reinforcing ply.
  • A ce jour, en fonction des applications et des caractéristiques recherchées, les structures de renforcement utilisées dans le domaine des composites, sont par exemple des tissus, grilles textiles, non tissés ou combinaison de tels éléments. To date, depending on the application and the desired characteristics, the reinforcing structures employed in the field of composites, for example fabrics, textile meshes, non-woven or a combination of such elements.
  • Dans son brevet français 2 646 442, le Demandeur a proposé une armature textile particulièrement adaptée pour réaliser des renforts de forte épaisseur, caractéristique nécessaire lorsque l'on souhaite réaliser des éléments tels que carrosserie de véhicules, bateaux de plaisance, citernes.., qui doivent présenter une grande rigidité. In its French patent 2,646,442, the Applicant has proposed a textile armature particularly adapted to perform thick reinforcements, necessary characteristic when it is desired to produce components such as vehicle bodies, pleasure boats, tanks .. which must have high rigidity. Une telle armature est constituée par au moins deux couches de renfort textile proprement dites, disposées de part et d'autre d'une couche centrale donnat l'épaisseur audit matériau, et elle se caractérise en ce que ladite couche centrale est constituée par une nappe à base de fibres synthétiques, de titre unitaire élevé, et qui ont reçu préalablement à leur mise sous forme de nappes un traitement leur communiquant une ondulation aux frisures permanentes, les différentes couches étant liées entre elles par couture/tricotage. Such an armature is constituted by at least two textile reinforcement layers themselves disposed on either side of a central layer donnat the thickness of said material, and is characterized in that said central layer consists of a sheet based on synthetic fibers, of high individual, and who have received their formed into webs treatment communicating to them a permanent crimp the crimp, the various layers being bonded together by sewing / knitting.
  • Un tel complexe donne entière satisfaction en ce qui a trait aux caractéristiques mécaniques que présente la structure composite qu'il permet de réaliser. Such a complex is entirely satisfactory in regard to the mechanical characteristics that shows the composite structure it makes possible.
  • Par ailleurs, il est particulièrement adapté pour réaliser des structures de forme complexe obtenues par moulage, par exemple selon les techniques dites par "moulage à la presse avec injection" ou "moulage sous vide". Moreover, it is particularly suitable for producing complex shaped structures obtained by molding, for example using the techniques called "press molding with injection" or "vacuum forming". L'un des inconvénients qu'il présente cependant, réside dans le fait que les coutures de liaison des différentes couches entre elles limitent cependant les capacités de déformation et surtout, conduisent à des défauts d'aspect de surface. One of its disadvantages, however, lies in the fact that the connecting seams of the various layers together, however, limit the deformability and above all, lead to surface blemishes.
  • Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un perfectionnement à un tel type de matériau textile qui non seulement permet de conserver les avantages que présente une telle structure, à savoir la possibilité de déformation, forte épaisseur et surtout une très grande homogénéité du matériau composite obtenu, résultant du fait que grâce à la structure particulière de la nappe fibreuse interne (fibres présentant un effet de ressort), on obtient une répartition de la résine très homogène sur toute l'épaisseur et toutes les directions dudit matériau et un aspect de surface parfaitement régulier. It has now been found, and this is what makes the object of the present invention, an improvement to this type of textile material which not only preserves the advantages of such a structure, namely the possibility of deformation, thick and especially a very high homogeneity of the composite material obtained, resulting from the fact that thanks to the particular structure of the inner fibrous web (fibers having a spring effect), a very uniform resin distribution throughout the thickness is obtained and all directions of said material and a perfectly regular surface appearance.
  • D'une manière générale, l'invention concerne donc un nouveau type d'armature textile utilisable pour la réalisation d'un matériau composite, cette armature étant constituée si on la considère en place à l'intérieur dudit matériau composite après réalisation, par deux couches de renfort textile proprement dites, disposées de part et d'autre d'une couche centrale donnant l'épaisseur audit matériau, ladite couche centrale étant constituée par une nappe à base de fibres synthétiques, de titre unitaire élevé, et qui ont reçu préalablement à leur mise sous forme de nappe, un traitement leur communiquant une ondulation (ou frisure) permanente, et elle se caractérise en ce que au moins une des couches de renfort textile est recouverte d'un voile fibreux à base de fibres chimiques, de titre inférieur à celui des fibres constituant la couche interne et qui ont également reçu un traitement leur communiquant une ondulation ou frisure permanente, les différentes couc In general, the invention therefore relates to a new type of textile armature usable for the production of a composite material, said armature being formed when viewed in place within said composite material after completion by two textile reinforcement layers themselves disposed on either side of a central layer giving thickness to the said material, said core layer being constituted by a sheet based on synthetic fibers, of high individual, who received previously for its placing in the form of sheet, a treatment imparting to them an undulation (or crimp) permanently, and is characterized in that at least one of the reinforcing textile layers is covered with a fibrous lap based on chemical fibers, title less than that of the fibers forming the internal layer and that also received a treatment communicating to them a permanent undulation or crimp, the various couc hes étant liées entre elles par aiguilletage. hes being bonded together by needling.
  • Dans une forme de réalisation conforme à l'invention, ladite armature textile est constituée d'une couche centrale emprisonnée entre deux renforts textiles dont au moins un est recouvert d'un voile fibreux. In one embodiment according to the invention, the textile reinforcement consists of a central layer trapped between two reinforcing textiles, at least one is covered with a fibrous lap.
  • Selon une variante, l'armature est constituée par une couche à base de fibres de titre unitaire élevé, destinée à donner l'épaisseur au matériau final, recouvert sur une seule de ses faces d'un renfort textile lui-même recouvert d'un voile fibreux, ledit matériau étant, lors de la réalisation de la structure composite, replié sur lui-même de manière à ce que l'on retrouve, dans la structure finale, une couche centrale donnant l'épaisseur de part et d'autre de laquelle est disposé un renfort textile associé à un voile fibreux. Alternatively, the armature consists of a base of high individual-fiber layer, intended to give thickness to the final material, covered on one of its faces with a textile reinforcement itself covered with a fibrous web, said material being, at the completion of the composite structure, folded on itself so that one finds, in the final structure, a central layer giving the thickness of both sides of which is arranged a reinforcing textile associated with a fibrous web.
  • Par rapport aux armatures telles que décrites dans le brevet 2 646 442, un tel matériau présente des possibilités de déformation et de moulage améliorées compte-tenu de l'absence des coutures pour lier les différentes couches entre elles, conserve les mêmes caractéristiques de bonne répartition de la résine et surtout, permet d'obtenir des articles dont l'état de surface extérieur est parfaitement régulier. Relative to reinforcement such as described in patent 2,646,442, such a material has the possibility of deformation and molding improved in view of the absence of the seams to bond the various layers together, retains the same characteristics of good distribution resin and above, provides articles whose exterior surface finish is perfectly regular.
  • Comme matériau entrant dans la réalisation d'un tel complexe, on peut utiliser des matériaux similaires à ceux faisant l'objet du brevet FR-A-2 646 442 pour réaliser la couche interne ainsi que les deux couches de renfort textile disposées de part et d'autre de cette couche centrale. As a material involved in the production of such a complex, one may use materials similar to those which are the subject of patent FR-A-2646442 to make the inner layer and the two textile reinforcement layers disposed on either side of this core layer.
  • Ainsi, la couche interne sera de préférence réalisée à partir d'une nappe non tissée, obtenue par exemple par cardage, à base de fibres synthétiques telles que fibres de polyester, polypropylène, polyamide, polyéthylène ayant un titre élevé et qui ont reçu un traitement de texturation, par exemple par bourrage, leur communiquant une frisure permanente. Thus, the inner layer will preferably be made from a nonwoven web, obtained for example by carding, based on synthetic fibers such as polyester fibers, polypropylene, polyamide, polyethylene having a high titer and which were treated texturing, for example by padding, imparting to them a permanent crimp. Par titre élevé, on entend des fibres dont le titre est en général compris entre 20 et 200 dtex et dont la longueur de coupe est en général comprise entre 40 et 120 mm. By high titer means fibers whose title is generally between 20 and 200 dtex and whose cutting length is generally between 40 and 120 mm. Il est évident que l'utilisation de fibres plus fines est éventuellement envisageable, mais alors on augmente la densité de la structure perturbant ainsi le cheminement de la résine lors de la réalisation du matériau composite et rendant la fabrication de ce dernier plus difficile, voire impossible. It is evident that the use of finer fibers is optionally possible, but then it increases the density of the structure thus disrupting the flow of the resin during the production of the composite material and making the manufacture of the latter more difficult or impossible .
  • Comme renforts textiles proprement dits disposés de part et d'autre de la couche interne précitée, on utilisera tous types de renforts conventionnels tels que fils parallèles jointifs ou espacés les uns des autres, nappes bidirectionnelles, nappes fibreuses, tissus pouvant être utilisés seuls ou en combinaison. As ordinary textile reinforcements arranged on both sides of the said inner layer, use all types of conventional reinforcements such as contiguous or spaced parallel son each other, bi-directional webs, fibrous webs, fabrics can be used alone or in combination. De tels renforts pouvant être à base de toute matière normalement utilisée pour réaliser des articles composites, tels que par exemple fibres de verre. Such reinforcements can be made of any material normally used to make composite articles, such as for example glass fibers.
  • Le voile fibreux qui recouvre au moins l'une des couches de renfort textile, peut être réalisé à partir de fibres chimiques, de même nature ou d'une nature différente de celle constituant la couche interne, lesdites fibres ayant également reçu de traitement leur communiquant une frisure et étant beaucoup plus fines. The fibrous web which covers at least one textile reinforcement layers, may be made from synthetic fiber of the same nature or of a different nature from that constituting the inner layer, said fibers having also received a treatment communicating to them crimp and being much thinner. A titre indicatif, des fibres de polyester, polyamide, polypropylène, polyéthylène ayant un titre compris entre 1,5 dtex et 10 dtex et qui sont normalement utilisées pour des applications textiles conventionnelles, tel que habillement, ameublement, filtration .., conviennent parfaitement pour réaliser cette ou ces couches de surface. As an indication, polyester fibers, polyamide, polypropylene, polyethylene having a titre of between 1.5 dtex and 10 dtex and are normally used for conventional textile applications such as clothing, home furnishings, filtration .., ideal for achieve this or these surface layers.
  • La liaison des différentes couches entre elles est avantageusement réalisée par aiguilletage mécanique, mettant en oeuvre des aiguilles comportant des barbes orientées en opposition et permettant d'obtenir l'entraînement des fibres de surface aussi bien qu'à l'aller qu'au retour desdites aiguilles au travers de l'empilement des couches fibreuses constituant le complexe. Binding different layers together is preferably achieved by mechanical needling, implementing needles having barbs oriented in opposition and for obtaining the drive of the surface fibers as well as the outward and return said needles through the stack of fibrous layers constituting the complex.
  • Dans le cas où la structure de base permettant de réaliser un matériau conforme à l'invention est constitué seulement d'une nappe fibreuse de titre élevé, dont une seule face est recouverte d'un renfort textile lui-même recouvert d'un voile fibreux à base de fibres fines et frisées, l'aiguilletage peut être réalisé avec des aiguilles qui comportent des barbes orientées dans le même sens et qui pénètrent dans l'empilement de matières textiles depuis la couche superficielle à base de fibres fine. In the case where the basic structure for making a material according to the invention consists of only a fibrous web of high titer, whose one side is covered with a textile reinforcement itself covered with a fibrous web based fine, crimped fibers, the needling can be achieved with needles that have barbs oriented in the same direction and which penetrate into the stack of textile materials, since the surface layer based on fine fibers.
  • Eventuellement, il pourrait être envisagé de réaliser la liaison des différentes couches entre elles en faisant appel à un traitement d'aiguilletage au moyen de jets de fluide, et plus particulièrement de jets d'eau. Possibly it could be envisaged to make the connection of the different layers together by using a needling treatment by fluid jets, especially water jets.
  • L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif mais non limitatif. The invention and the advantages it affords will be better understood from the embodiment given below by way of non-limiting example.
  • Exemple Example
  • Sur une machine conventionnelle d'aiguilletage, équipée d'aiguilles comportant des barbes orientées en opposition, on réalise une armature conforme à l'invention en introduisant dans ladite aiguilleteuse une superposition de nappes textiles préalablement réalisées, et qui se compose : On a conventional needling machine equipped with needles having barbs oriented in opposition, there is provided a reinforcement according to the invention by introducing into said needling superposed fabric sheets produced beforehand, and which consists of:
    • d'une couche interne constituée par une nappe non tissée réalisée par cardage, à partir de fibres de polypropylène ayant un titre unitaire de 70 dtex et une longueur de coupe de 90 mm, les fibres ayant été préalablement frisées avant coupe de manière à présenter des ondulations permanentes (dans le cas présent, 2,3 ondulations/centimètre) ; an inner layer constituted by a nonwoven web formed by carding, from polypropylene fibers having an individual titre of 70 dtex and a cut length of 90 mm, the fibers having been previously crimped before cutting so as to have permanent waves (in this case, 2.3 crimps / centimeter); cette nappe pèse environ 250 g/m2 et a une épaisseur d'environ 4 mm ; said web weighs about 250 g / m2 and a thickness of about 4 mm;
    • de deux nappes de renfort textile proprement dites disposées de part et d'autre de la couche interne précitée, ces nappes de renfort textile étant constituées toutes les deux par un mat de verre pesant 450 g/m2, obtenu par découpe de fibres de verre et nappage conventionnel par voie sèche ; two textile reinforcing plies themselves disposed on either side of the abovementioned inner layer, the textile reinforcing plies being formed both by a glass mat weighing 450 g / m2, obtained by cutting glass fibers and conventional batt dry; ces fibres de verre ont un titre de 25 tex, la longueur de coupe étant de 50 mm. these glass fibers have a titre of 25 tex, the cut length being 50 mm.
  • De part et d'autre de l'ensemble précité, contre les deux faces externes des couches de renfort textile, est disposé un voile fibreux réalisé également par cardage à partir de fibres de polyester frisées ayant un titre de 3,3 dtex et une longueur de coupe de 40 mm ; On either side of the said plurality, against both outer sides of the textile reinforcing layers, is disposed a fiber web also made by carding from crimped polyester fibers having a count of 3.3 dtex and a length cutting 40 mm; cette nappe fibreuse pèse 60 g/m2. this fibrous web weighing 60 g / m2.
  • L'opération d'aiguilletage est réalisée dans les conditions suivantes : The needling operation is carried out under the following conditions:
    • vitesse de passage de la matière : 4 mètres/minute passing speed of matter: 4 meters / minute
    • amplitude de déplacement des aiguilles : 60 mm amplitude of movement of needles: 60 mm
    • densité d'aiguilletage : 45/50 coups par cm2. needling density: 45/50 strokes per cm2.
  • Après aiguilletage, on obtient une structure ayant une épaisseur d'environ 4,5 mm, les différentes nappes étant parfaitement liées les unes aux autres. After needling, a structure having a thickness of about 4.5 mm is obtained, the various plies being perfectly bonded to each other.
  • Exemple 2 : Example 2:
  • On répète l'exemple 1 si ce n'est que l'empilement de nappes textiles n'est constitué que d'une couche interne recouverte d'une nappe de renfort textile et d'un voile fibreux ayant les mêmes caractéristiques et la même composition que les matières de l'exemple 1. Repeating Example 1 except that the stack of textile webs is formed as an inner layer covered by a textile reinforcing ply and a fibrous web having the same characteristics and the same composition that the materials of example 1.
  • L'aiguilletage est réalisé dans les mêmes conditions si ce n'est que les aiguilles comportent des barbes orientées dans le même sens et que leur action sur l'empilement de nappes textiles s'exerce à partir du voile fibreux en fibres fines. Needling is performed under the same conditions except that the needles have barbs oriented in the same direction and their action on the stack of textile webs is carried out from the fibrous web into fine fibers.
  • Lors de l'utilisation, la structure obtenue est repliée sur elle-même de telle sorte que les voiles fibreux se trouvent à l'extérieur et que le non tissé à base de fibres de titre élevé soit à l'intérieur. In use, the structure obtained is folded back on itself such that the fibrous webs are located on the outside and the nonwoven base high titer of the fibers is within. On obtient par exemple à l'exemple précédent un renfort ayant une épaisseur d'environ 9 mm. for example obtained in the preceding example, a reinforcement having a thickness of about 9 mm.
  • Les matériaux conformes à l'invention sont parfaitement adaptés pour réaliser des articles moulés à la presse avec injection ou par moulage sous vide. The materials according to the invention are ideally suited for making molded articles for the press with injection or by vacuum molding. Les articles composites ainsi produits sont très homogènes, et présentent par ailleurs un aspect de surface parfaitement régulier. The composite products thus produced are very homogenous, and also have a perfectly smooth surface appearance.
  • Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit précédemment mais elle en couvre toutes les variantes réalisées dans le même esprit. Of course, the invention is not limited to the embodiment described above but covers all the variants made in the same spirit.
  • Ainsi, la liaison des différentes couches pourrait être éventuellement réalisée en effectuant un aiguilletage double face ou au moyen d'une installation mettant en oeuvre des jets d'eau. Thus, binding of the various layers may be optionally carried out by double face needling or by means of an installation employing water jets.
  • De même, s'il est avantageux de réaliser la liaison de l'ensemble des couches constituant le matériau conforme à l'invention en une seule opération, il pourrait être envisagé de rapporter les deux faces externes après avoir réalisé la structure interne (couche centrale et renfort associé à cette couche) préalablement. Similarly, it is advantageous to carry out the connection of all the layers constituting the material according to the invention in a single operation, it could be envisaged to bring the two outer faces after making the inner structure (central layer and associated with this reinforcing layer) beforehand.

Claims (5)

1/ Armature textile utilisable pour la réalisation d'un matériau composite, constituée si on la considère en place à l'intérieur dudit matériau composite après réalisation, par deux couches de renfort textile proprement dites, disposées de part et d'autre d'une couche centrale donnant l'épaisseur audit matériau, ladite couche centrale étant constituée par une nappe à base de fibres synthétiques, de titre unitaire élevé, et qui ont reçu, préalablement à leur mise sous forme de nappes, un traitement leur communiquant une ondulation (ou frisure) permanente, caractérisée en ce que au moins une des couches de renfort textile est recouverte d'un voile fibreux à base de fibres chimiques, de titre inférieur à celui des fibres constituant la couche interne et qui ont également reçu un traitement leur communiquant une ondulation ou frisure permanente, les différentes couches étant liées entre elles par aiguilletage. 1 / A textile reinforcement usable for the production of a composite material consisting when considered in place within said composite material after completion by two textile reinforcement layers themselves, arranged on either side of a central layer giving thickness to the said material, said core layer being constituted by a sheet based on synthetic fibers, of high individual, and who have received prior to being formed into webs, a treatment imparting to them a corrugation (or crimp) permanently, characterized in that at least one of the reinforcing textile layers is covered with a fibrous lap based on chemical fibers, count lower than that of the fibers forming the internal layer and that also received a treatment communicating to them a permanent undulation or crimp, the various layers being bonded together by needling.
2/ Armature selon la revendication 1, caractérisée en ce qu'elle est constituée, avant réalisation du matériau composite, d'une couche centrale emprisonnée entre deux renforts textiles dont au moins un est recouvert d'un voile fibreux. 2 / Reinforcement according to claim 1, characterized in that it consists, before production of the composite material, of a central layer trapped between two reinforcing textiles, at least one is covered with a fibrous lap.
3/ Armature selon la revendication 1, caractérisée en ce qu'elle est constituée, avant réalisation du matériau composite, par une couche à base de fibres de titre unitaire élevé, destinée à donner l'épaisseur au matériau final, recouvert sur une seule de ses faces d'un renfort textile lui-même recouverte d'un voile fibreux, ledit matériau étant, lors de la réalisation de la structure composite, replié sur lui-même de manière à ce que l'on retrouve dans la structure finale une couche centrale donnant de l'épaisseur de part et d'autre de laquelle est disposé un renfort textile associé à un voile fibreux. 3 / frame according to claim 1, characterized in that it consists, before production of the composite material, a basic high individual fiber layer, intended to give thickness to the final material, covered on one of its faces with a textile reinforcement itself covered with a fibrous web, said material being, at the completion of the composite structure, folded on itself so that found in the final structure a layer giving the thickness of central part side of which is arranged a reinforcing textile associated with a fibrous web.
4/ Armature selon l'une des revendications 1 à 3, caractérisée en ce que la ou les couches de renfort textile sont constituées de mats fibreux éventuellement associés à d'autres renforts textiles. 4 / Reinforcement according to one of claims 1 to 3, characterized in that the one or more textile reinforcing layers consist of fibrous mats possibly associated with other textile reinforcements.
5/ Armature selon l'une des revendication 1 à 4, caractérisée en ce que la couche donnant l'épaisseur au matériau et le ou les voiles fibreux formant la ou les faces externes, est à base de fibres polyester, polyamide, polypropylène, polyéthylène, des éléments de renforcement interposés entre ces couches étant à base de fibres de verre. 5 / Reinforcement according to one of claims 1 to 4, characterized in that the layer giving thickness to the material and the one or more fibrous webs forming the outer faces or is based on polyester fibers, polyamide, polypropylene, polyethylene , reinforcing elements interposed between these layers being based on glass fibers.
EP19940420367 1993-12-24 1994-12-20 Textile reinforcing layer useful in the manufacture of composite materials Expired - Lifetime EP0659922B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9315843A FR2714397B1 (en) 1993-12-24 1993-12-24 Textile reinforcement used to make composite materials.
FR9315843 1993-12-24

Publications (2)

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EP0659922A1 true EP0659922A1 (en) 1995-06-28
EP0659922B1 EP0659922B1 (en) 1996-04-10

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EP (1) EP0659922B1 (en)
AT (1) AT136596T (en)
CZ (1) CZ284528B6 (en)
DE (2) DE69400134D1 (en)
DK (1) DK0659922T3 (en)
ES (1) ES2085819T3 (en)
FR (1) FR2714397B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780420A1 (en) * 1998-06-25 1999-12-31 Mci Technologies Method for the fabrication of a fiber glass coating
WO2003038175A1 (en) * 2001-10-17 2003-05-08 Saertex Wagener Gmbh & Co. Kg Textile reinforcement comprising at least one cover layer and one voluminous nonwoven layer
FR2834726A1 (en) * 2002-01-16 2003-07-18 Saint Gobain Vetrotex Fibrous structure for the production of composite materials
FR2854172A1 (en) * 2003-04-22 2004-10-29 Chomarat Composites Reinforcing textile, especially for molded articles, is made from two or more layers of glass fibres with different thicknesses and lengths
WO2008139423A1 (en) * 2007-05-15 2008-11-20 Gilbert Chomarat Reinforcement textile armature and method for making same
FR2920025A1 (en) * 2007-08-14 2009-02-20 Saertex France Soc Par Actions Fibrous reinforcement of high compressive strength, for resin-based composites, is obtained by depositing high titer fibers on cloth and orienting fibers to give 3-dimensional structure
US8007893B2 (en) 2003-03-31 2011-08-30 Ocv Intellectual Capital, Llc Reinforcement structures and processes for manufacturing same
FR2992000A1 (en) * 2012-06-18 2013-12-20 Chomarat Textiles Ind Method for manufacturing a textile reinforcing reinforcement for composite materials and the armature thus obtained
WO2016005908A1 (en) 2014-07-08 2016-01-14 Gilbert Chomarat Textile reinforcement framework and means for the production thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206351A (en) * 1961-10-04 1965-09-14 Fiberwoven Corp Needled fabric structure and method of making same
US4199635A (en) * 1979-04-20 1980-04-22 Albany International Corp. Fabric faced laminate panel and method of manufacture
EP0285338A2 (en) * 1987-04-03 1988-10-05 Gates Formed-Fibre Products Inc. Fire retardant structural textile panel
EP0395548A1 (en) * 1989-04-28 1990-10-31 ETABLISSEMENTS LES FILS D'AUGUSTE CHOMARAT & CIE. Société Anonyme Textil reinforcement for making moulded composite materials and articles with reinforcement
WO1992005949A1 (en) * 1990-10-03 1992-04-16 Milliken Research Corporation Rigid fiber composite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206351A (en) * 1961-10-04 1965-09-14 Fiberwoven Corp Needled fabric structure and method of making same
US4199635A (en) * 1979-04-20 1980-04-22 Albany International Corp. Fabric faced laminate panel and method of manufacture
EP0285338A2 (en) * 1987-04-03 1988-10-05 Gates Formed-Fibre Products Inc. Fire retardant structural textile panel
EP0395548A1 (en) * 1989-04-28 1990-10-31 ETABLISSEMENTS LES FILS D'AUGUSTE CHOMARAT & CIE. Société Anonyme Textil reinforcement for making moulded composite materials and articles with reinforcement
WO1992005949A1 (en) * 1990-10-03 1992-04-16 Milliken Research Corporation Rigid fiber composite

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2780420A1 (en) * 1998-06-25 1999-12-31 Mci Technologies Method for the fabrication of a fiber glass coating
WO2003038175A1 (en) * 2001-10-17 2003-05-08 Saertex Wagener Gmbh & Co. Kg Textile reinforcement comprising at least one cover layer and one voluminous nonwoven layer
WO2003060218A1 (en) * 2002-01-16 2003-07-24 Saint Gobain Vetrotex Fibrous structure which is used to produce composite materials
CN100383309C (en) * 2002-01-16 2008-04-23 法国圣戈班韦特罗特斯有限公司 Fibrous structure which is used to produce composite materials
FR2834726A1 (en) * 2002-01-16 2003-07-18 Saint Gobain Vetrotex Fibrous structure for the production of composite materials
US8007893B2 (en) 2003-03-31 2011-08-30 Ocv Intellectual Capital, Llc Reinforcement structures and processes for manufacturing same
FR2854172A1 (en) * 2003-04-22 2004-10-29 Chomarat Composites Reinforcing textile, especially for molded articles, is made from two or more layers of glass fibres with different thicknesses and lengths
CN101680144B (en) 2007-05-15 2013-01-23 吉尔伯特·肖马拉 Reinforcement textile armature and method for making same
WO2008139423A1 (en) * 2007-05-15 2008-11-20 Gilbert Chomarat Reinforcement textile armature and method for making same
FR2916208A1 (en) * 2007-05-15 2008-11-21 Gilbert Chomarat Textile reinforcing reinforcement and method for making the same.
AU2008249626B2 (en) * 2007-05-15 2014-10-02 Gilbert Chomarat Reinforcement textile armature and method for making same
FR2916209A1 (en) * 2007-05-15 2008-11-21 Gilbert Chomarat Textile reinforcing reinforcement and method of making same
FR2920025A1 (en) * 2007-08-14 2009-02-20 Saertex France Soc Par Actions Fibrous reinforcement of high compressive strength, for resin-based composites, is obtained by depositing high titer fibers on cloth and orienting fibers to give 3-dimensional structure
FR2992000A1 (en) * 2012-06-18 2013-12-20 Chomarat Textiles Ind Method for manufacturing a textile reinforcing reinforcement for composite materials and the armature thus obtained
WO2013190221A1 (en) 2012-06-18 2013-12-27 Chomarat Textiles Industries Process for manufacturing a textile reinforcement for composite materials, and reinforcement thus obtained
WO2016005908A1 (en) 2014-07-08 2016-01-14 Gilbert Chomarat Textile reinforcement framework and means for the production thereof
FR3023565A1 (en) * 2014-07-08 2016-01-15 Gilbert Chomarat Textile reinforcing reinforcement and method of making same

Also Published As

Publication number Publication date
FR2714397B1 (en) 1996-01-26
EP0659922B1 (en) 1996-04-10
DE69400134T2 (en) 1996-08-29
DK659922T3 (en)
AT136596T (en) 1996-04-15
CZ284528B6 (en) 1998-12-16
ES2085819T3 (en) 1996-06-01
FR2714397A1 (en) 1995-06-30
DE69400134D1 (en) 1996-05-15
DK0659922T3 (en) 1996-06-03
CZ325894A3 (en) 1995-07-12

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