EP0193479A1 - Textile reinforcement for layered products, and process for making it - Google Patents

Textile reinforcement for layered products, and process for making it Download PDF

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Publication number
EP0193479A1
EP0193479A1 EP19860420045 EP86420045A EP0193479A1 EP 0193479 A1 EP0193479 A1 EP 0193479A1 EP 19860420045 EP19860420045 EP 19860420045 EP 86420045 A EP86420045 A EP 86420045A EP 0193479 A1 EP0193479 A1 EP 0193479A1
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EP
European Patent Office
Prior art keywords
son
threads
melt
hot
reinforcement
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
EP19860420045
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German (de)
French (fr)
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EP0193479B1 (en
Inventor
André Fourezon
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Fils dAuguste Chomarat et Cie SA
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Fils dAuguste Chomarat et Cie SA
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Priority to AT86420045T priority Critical patent/ATE40722T1/en
Publication of EP0193479A1 publication Critical patent/EP0193479A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/267—Glass
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002—Inorganic yarns or filaments
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/587—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads adhesive; fusible
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002—Inorganic yarns or filaments
    • D04H3/004—Glass yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/115—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by applying or inserting filamentary binding elements
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D10B2101/06—Glass
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/10—Inorganic fibres based on non-oxides other than metals
    • D10B2101/12—Carbon; Pitch
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3049—Including strand precoated with other than free metal or alloy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y10T442/322—Warp differs from weft

Definitions

  • the invention relates to a new type of textile reinforcement, based on glass threads in particular, which can be used for the production of laminate complexes; it also relates to a method for obtaining such a type of frame.
  • any type of usual material will be used for the production of laminated articles (such as glass fibers, carbon fibers, aramid yarns such as those sold under the brand "KEVLAR".
  • any material compatible with the resins to be reinforced will be used. It is possible, for example, to use a yarn based on copolyamide (such as those sold under the brand GRILON) and whose melting zone is between 70 and 150 ° C., these yarns can be either multifilaments or monofilaments. It is also possible to use core wires comprising a core based on a material similar to that of warp wire (for example glass, aramid, carbon, etc.), coated with a layer of hot-melt material such as a layer of polyamide, polyester.
  • a yarn based on copolyamide such as those sold under the brand GRILON
  • core wires comprising a core based on a material similar to that of warp wire (for example glass, aramid, carbon, etc.), coated with a layer of hot-melt material such as a layer of polyamide, polyester.
  • the plies according to the invention can be superimposed by orienting the transverse threads in a different way from one layer to another, which makes it possible to obtain reinforcement in all directions.
  • the presence of the hot-melt bonding wires further promote the connection between the different layers.
  • the different superimposed layers can be combined with other textile materials such as nonwoven fibrous webs, the bonding of the stack thus formed can be achieved by knitting stitching.
  • the invention also relates to a method for obtaining such a material, which method consists, in a known manner, of producing, by weaving, an article comprising the weft threads linked together by loose woven warp threads with respect to the density of the wefts being characterized by the fact that after making said fabric, the orientation of the wefts is modified relative to the warp threads and, simultaneously, a heat treatment is carried out which makes it possible to cause at least superficial fusion of the warping threads .
  • the displacement of the orientation of the weft threads with respect to the warp threads can be obtained by any known means, for example by means of a ream in which the lateral holding elements have a displacement offset one relative to the 'other.
  • the material according to the invention consists of a dense web of weft threads ( 1 ), linked together by warp threads (2) woven loose with respect to the density weft threads (1).
  • the article is in the form illustrated in FIG. 1, that is to say that the weft threads (1) and the warp threads (2) are perpendicular to each other.
  • the warp threads (2) are at least superficially hot-melt threads so that during deformation, the said warp threads are fused and, consequently, the weft threads (1 ) in the new position communicated to him.
  • the unidirectional plies thus formed in which the inclination of the weft threads (1) relative to the warp threads (2) can be arbitrary but is, in general, comprised around 45 °, can be superimposed, as well as this spring of Figure 3, so that the weft son (2) are oriented in a different way from one layer to another.
  • the different layers may possibly be combined with other textile materials, such as for example a fibrous sheet of glass, the connection being obtainable by any known means such as gluing, knitting and sewing.
  • weft threads (1) can, for example, possibly be associated with threads additional hot melt, parallel or embedded inside said weft son (1).
  • Such a material can also be used in applications other than resin reinforcement, for example as a support for bitumen or various coatings.

Abstract

This invention relates to a textile reinforcement process for making laminated complexes, of the type constituted for the major part by fibers extending transversely with respect to the length of said reinforcement, said yarns being joined together by a loose binding warp, wherein: the transverse yarns are disposed on a bias with respect to the length of the binding warp, and said binding warp is based on yarns which are at least superficially thermo-fusible.

Description

L'invention concerne un nouveau type d'armature textile, à base de fils de verre notamment, utilisable pour la réalisation de complexes stratifiés; elle concerne également un procédé permettant l'obtention d'un tel type d'armature.The invention relates to a new type of textile reinforcement, based on glass threads in particular, which can be used for the production of laminate complexes; it also relates to a method for obtaining such a type of frame.

Parmi les matériaux textiles utilisés pour réaliser des articles stratifiés, c'est-à-dire des articles à base d'une résine (polyester ou autre) armée par une structure textile, il a été proposé de réaliser comme type d'armature textile, des nappes dites "unidirectionnelles" constituées pour majorité de fibres (fits de verre par exemple) s'étendant transversalement par rapport à la longueur de ladite nappe, lesdits fils étant liés entre eux par une chaîne de liage, lâche, permettant de maintenir les fils de trame parallèlement les uns aux autres.Among the textile materials used to produce laminated articles, that is to say articles based on a resin (polyester or other) reinforced by a textile structure, it has been proposed to produce as a type of textile reinforcement, so-called "unidirectional" plies consisting mainly of fibers (glass fits for example) extending transversely with respect to the length of the said ply, the said yarns being linked together by a loose binding chain enabling the yarns to be held of frame parallel to each other.

Lors de la réalisation de l'article stratifié proprement dit on superpose plusieurs nappes ainsi réalisées, en les décalant éventuellement de 90° les unes par rapport aux autres, afin d'avoir de bonnes caractéristiques mécaniques tant dans le sens long que dans le sens large.During the production of the laminated article proper, several layers thus produced are superimposed, possibly shifting them by 90 ° relative to each other, in order to have good mechanical characteristics both in the long and in the broad direction. .

Il a également été proposé d'utiliser des armatures textiles dans lesquelles les fils transversaux sont disposés en biais par rapport à la longueur, de tels articles étant constitués non pas par un véritable tissu mais par une "grille", c'est-à-dire une structure composée de nappes de fils superposées, orientées différemment les unes par rapport aux autres et liées entre elles par collage- De tels articles de type "grille" permettent d'obtenir des matériaux stratifiés renforcés dans toutes les directions mais ils présentent cependant comme inconvénient de comporter une grande quantité de liants qui peut nuire aux qualités de l'article composite terminé.It has also been proposed to use textile reinforcements in which the transverse threads are arranged at an angle with respect to the length, such articles being constituted not by a real fabric but by a "grid", that is to say say a structure composed of layers of superimposed threads, oriented differently with respect to each other and linked together by bonding- Such "grid" type articles make it possible to obtain laminated materials reinforced in all directions, but they nevertheless present as disadvantage of having a large amount of binders which can adversely affect the qualities of the finished composite article.

Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un nouveau type de matériau textile tissé unidirectionnel qui, non seulement, présente les avantages de tels articles tissés, c'est-à-dire un bon maintien des fils les uns par rapport aux autres mais également offre la possibilité, comme dans le cas de grilles textiles non tissées, d'obtenir des articles unidirectionnels dans lesquels les fils majoritaires s'étendent en biais par rapport aux fils de chaîne de liage et ce, en formant un angle quelconque par rapport auxdits fils.Now we have found, and this is what is the subject of the present invention, a new type of unidirectional woven textile material which, not only, has the advantages of such woven articles, that is to say a good holding the threads in relation to each other but also offers the possibility, as in the case of non-woven textile grids, of obtaining unidirectional articles in which the majority threads extend at an angle relative to the warp threads and this, by forming any angle with respect to said wires.

D'une manière générale. l'invention concerne donc un nouveau type d'armature textile utilisable pour la réalisation d'articles stratifiés, cette armature étant du type constitué pour majorité de fibres s'étendant transversalement par rapport à la longueur de ladite nappe, lesdits fils étant liés entre eux par une chaîne de liage, lâche, et se caractérise par le fait que :

  • -d'une part les fils transversaux sont disposés en biais par rapport à la longueur de la chaîne de liage et,
  • -d'autre part, ladite chaîne de liage est à base de fils au moins superficiellement thermofusible.
In a general way. the invention therefore relates to a new type of textile reinforcement usable for the production of laminated articles, this reinforcement being of the type consisting for the most part of fibers extending transversely with respect to the length of said ply, said threads being linked together by a loose, tying chain and is characterized by the fact that:
  • on the one hand, the transverse threads are arranged at an angle relative to the length of the tying chain and,
  • -on the other hand, said binding chain is based on son at least superficially hot-melt.

Comme matière constituant les fils transversaux, on utilisera tout type de matière usuelle pour la réalisation d'articles stratifiés, (tels que fibres de verre, fibres de carbone, fils aramides tels que ceux commercialisés sous la marque "KEVLAR".As the material constituting the transverse yarns, any type of usual material will be used for the production of laminated articles (such as glass fibers, carbon fibers, aramid yarns such as those sold under the brand "KEVLAR".

Par ailleurs, comme fils fusibles permettant de réaliser la chaîne de liage, on utilisera toute matière compatible avec les résines à renforcer. On peut par exemple, utiliser un fil à base de copolyamide (tels que ceux commercialisés sous la marque GRILON) et dont la zone de fusion se situe entre 70 et 150°C, ces fils pouvant être soit des multifila- ments soit des monofilaments. On peut également utiliser des fils à âme comportant une âme à base d'une matière similaire à ceux du fil de chaîne (par exemple verre, aramide, carbone..), enrobés d'une couche de matière thermofusible telle qu'une couche de polyamide, polyester.Furthermore, as fusible wires enabling the binding chain to be produced, any material compatible with the resins to be reinforced will be used. It is possible, for example, to use a yarn based on copolyamide (such as those sold under the brand GRILON) and whose melting zone is between 70 and 150 ° C., these yarns can be either multifilaments or monofilaments. It is also possible to use core wires comprising a core based on a material similar to that of warp wire (for example glass, aramid, carbon, etc.), coated with a layer of hot-melt material such as a layer of polyamide, polyester.

Lors de la réalisation de l'article stratifié proprement dit les nappes conformes à l'invention peuvent être superposées en orientant les fils transversaux d'une manière différente d'une couche à l'autre, ce qui permet d'obtenir un renforcement dans toutes les directions. Lors d'une telle superposition, la présence des fils thermofusibles de liage favorisent en outre la liaison entre les différentes couches. Eventuellement, les différentes couches superposées peuvent être combinées à d'autres matériaux textiles tels que des nappes fibreuses non tissées, la liaison de l'empilement ainsi formé pouvant être réalisé par couture tricotage.During the production of the laminated article proper, the plies according to the invention can be superimposed by orienting the transverse threads in a different way from one layer to another, which makes it possible to obtain reinforcement in all directions. During such a superposition, the presence of the hot-melt bonding wires further promote the connection between the different layers. Optionally, the different superimposed layers can be combined with other textile materials such as nonwoven fibrous webs, the bonding of the stack thus formed can be achieved by knitting stitching.

L'invention concerne également un procédé pour l'obtention d'un tel matériau, procédé qui consiste de manière connue à réaliser par tissage un article comportant les fils de trame liés entre eux par des fils de chaîne tissés lâches par rapport à la densité des trames étant caractérisé par le fait, qu'après réalisation dudit tissu, on modifie l'orientation des trames par rapport aux fils de chaîne et, simultanément, on effectue un traitement thermique permettant de provoquer la fusion au moins superficielle des fils de chaîne de liage.The invention also relates to a method for obtaining such a material, which method consists, in a known manner, of producing, by weaving, an article comprising the weft threads linked together by loose woven warp threads with respect to the density of the wefts being characterized by the fact that after making said fabric, the orientation of the wefts is modified relative to the warp threads and, simultaneously, a heat treatment is carried out which makes it possible to cause at least superficial fusion of the warping threads .

Le déplacement de l'orientation des fils de trame par rapport aux fils de chaîne peut être obtenu par tout moyen connu, par exemple au moyen d'une rame dans laquelle les éléments de maintien latéraux ont un déplacement décalé l'un par rapport à l'autre.The displacement of the orientation of the weft threads with respect to the warp threads can be obtained by any known means, for example by means of a ream in which the lateral holding elements have a displacement offset one relative to the 'other.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif et non limitatif et qui est illustré par les schémas annexés dans lesquels :

  • -la figure 1 illustre, de manière schématique, une nappe unidirectionnelle telle qu'elle se présente à la tombée du métier à tisser ;
  • -la figure 2 illustre la structure de la nappe conforme à l'invention après traitement permettant de modifier l'orientation des fils de trame par rapport aux fils de chaîne ;
  • -la figure 3 illustre la manière dont différentes nappes peuvent être superposées lors de la réalisation d'un stratifié proprement dit.
The invention and the advantages which it brings will however be better understood thanks to the example of embodiment given below by way of non-limiting illustration and which is illustrated by the attached diagrams in which:
  • FIG. 1 illustrates, schematically, a unidirectional sheet as it appears at the end of the loom;
  • FIG. 2 illustrates the structure of the ply according to the invention after treatment making it possible to modify the orientation of the weft threads relative to the warp threads;
  • FIG. 3 illustrates the way in which different plies can be superimposed during the production of a laminate proper.

Si l'on se reporte aux schémas annexés, le matériau conforme à l'invention est constitué d'une nappe dense de fils de trame (1), liés entre eux par des fils de chaîne (2) tissés lâches par rapport à la densité des fils de trame (1). A la tombée du métier, l'article se présente sous la forme illustrée à la figure 1, c'est-à-dire que les fils de trame (1) et les fils de chaîne (2) sont perpendiculaires entre eux.If we refer to the attached diagrams, the material according to the invention consists of a dense web of weft threads ( 1 ), linked together by warp threads (2) woven loose with respect to the density weft threads (1). When the loom falls, the article is in the form illustrated in FIG. 1, that is to say that the weft threads (1) and the warp threads (2) are perpendicular to each other.

Conformément à l'invention, après la réalisation d'un tel tissu, on le soumet à un traitement permettant de modifier l'orientation des fils de trame (1) par rapport aux fils de chaîne ainsi que cela est représenté à la figure 2. Une telle modification de l'orientation du fil de trame (1) par rapport au fil de chaîne (2) est obtenue, par exemple, en faisant passer le tissu formé sur une rame conventionnelle. Conformément à l'invention, les fils de chaîne (2) sont des fils au moins superficiellement thermofusibles de telle sorte que lors de la déformation, on provoque la fusion desdits fils de chaîne et, par suite, le blocage des fils de trame (1) dans la nouvelle position qui lui aura été communiquée.In accordance with the invention, after the production of such a fabric, it is subjected to a treatment making it possible to modify the orientation of the weft threads (1) relative to the warp threads as shown in FIG. 2. Such a modification of the orientation of the weft thread (1) relative to the warp thread (2) is obtained, for example, by passing the fabric formed over a conventional ream. According to the invention, the warp threads (2) are at least superficially hot-melt threads so that during deformation, the said warp threads are fused and, consequently, the weft threads (1 ) in the new position communicated to him.

Les nappes unidirectionnelles ainsi formées, dans lesquelles l'inclinaison des fils de trame (1) par rapport aux fils de chaîne (2) peut être quelconque mais est, en général, comprise aux environs de 45°, peuvent être superposées, ainsi que cela ressort de la figure 3, de telle sorte que les fils de trame (2) soient orientés d'une manière différente d'une couche à une autre. Les différentes couches peuvent éventuellement être associées à d'autres matériaux textiles, tels que par exemple une nappe fibreuse de verre, la liaison pouvant être obtenue par tout moyen connu tel que collage, tricotage couture.The unidirectional plies thus formed, in which the inclination of the weft threads (1) relative to the warp threads (2) can be arbitrary but is, in general, comprised around 45 °, can be superimposed, as well as this spring of Figure 3, so that the weft son (2) are oriented in a different way from one layer to another. The different layers may possibly be combined with other textile materials, such as for example a fibrous sheet of glass, the connection being obtainable by any known means such as gluing, knitting and sewing.

On a constaté que la présence des fils de chaîne thermofusibles (2) permettaient, non seulement de réaliser un maintien parfait des fils de trame (1) selon l'orientation souhaitée mais que, par ailleurs, lors de la superposition de plusieurs nappes et des traitements thermiques. On obtient une bonne liaison entre les différentes couches de renforcementIt has been found that the presence of the hot-melt warp threads (2) makes it possible not only to achieve perfect retention of the weft threads (1) according to the desired orientation but that, moreover, during the superposition of several layers and heat treatments. A good bond is obtained between the different reinforcing layers

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation donné précédemment mais elle en couvre toutes les variantes réalisées dans la même esprit, les fils de trame (1) pouvant, par exemple, être éventuellement associés à des fils thermofusibles additionnels, parallèles ou noyés à l'intérieur desdits fils de trame (1).Of course, the invention is not limited to the embodiment given above but it covers all the variants produced in the same spirit, the weft threads (1) can, for example, possibly be associated with threads additional hot melt, parallel or embedded inside said weft son (1).

Un tel matériau peut être également utilisé dans d'autres applications que le renforcement de résine, par exemple comme support de bitume ou d'enductions diverses.Such a material can also be used in applications other than resin reinforcement, for example as a support for bitumen or various coatings.

Claims (6)

1/ Armature textile utilisable pour la réalisation de complexes stratifiés, du type constitué pour majorité de fibres - (1) s'étendant transversalement par rapport à la longueur de ladite armature, lesdits fils (1) étant liés entre eux par une chaîne de liage (2), lâche, caractérisée par le fait que - d'une part, les fils transversaux (1) sont disposés en biais par rapport à la longueur de la chaîne de liage (2) et,
-d'autre part, ladite chaîne de liage (2) est à base de fils au moins superficiellement thermofusibles.1 / Textile reinforcement usable for the production of laminate complexes, of the type constituted for the most part of fibers - (1) extending transversely with respect to the length of said reinforcement, said threads (1) being linked together by a binding chain (2), loose, characterized in that - on the one hand, the transverse threads (1) are arranged at an angle relative to the length of the tying chain (2) and,
-on the other hand, said binding chain (2) is based on son at least superficially hot-melt. 2/ Armature selon la revendication 1, caractérisée par le fait que les fils thermofusibles (2) de la chaîne de liage sont constitués de fils enduits d'une matière thermofusible telle que des fils de verre enduits de polyamide.2 / reinforcement according to claim 1, characterized in that the hot-melt son (2) of the binding chain consist of son coated with a hot-melt material such as glass son coated with polyamide. 3/ Armature selon la revendication 1, caractérisée par le fait que les fils thermofusibles de la chaîne de liage sont des fils chimiques thermofusibles tels que ceux à base de copolyamide.3 / reinforcement according to claim 1, characterized in that the hot melt son of the binding chain are chemical hot melt son such as those based on copolyamide. 4/ Matériau selon l'une des revendications 1 à 3, caractérisé par le fait que lors de la réalisation de l'article stratifié proprement dit, les nappes sont superposées en orientant les fils transversaux (1) d'une manière différente d'une couche à l'autre.4 / Material according to one of claims 1 to 3, characterized in that during the production of the laminate article proper, the plies are superimposed by orienting the transverse son (1) in a manner different from a layer to layer. 5/ Procédé pour l'obtention d'un matériau selon l'une des revendications 1 à 3, qui consiste, de manière connue, à réaliser par tissage un article comportant des fils de trame - (1 ) liés entre eux par des fils de chaîne (2), tissés lâches par rapport à la densité des trames (1), caractérisé par le fait qu'après réalisation dudit tissu, on modifie l'orientation des trames (1) par rapport aux fils de chaîne (2) et, simultanément, on effectue un traitement thermique permettant de provoquer la fusion au moins superficielle des fils de chaîne (2) de liage.5 / A method for obtaining a material according to one of claims 1 to 3, which consists, in known manner, in producing by weaving an article comprising weft son - (1) linked together by son of warp (2), woven loose with respect to the density of the wefts (1), characterized in that, after the said fabric has been produced, the orientation of the wefts (1) is modified with respect to the warp threads (2) and, simultaneously, a heat treatment is carried out making it possible to cause the at least superficial melting of the linking warp threads (2). 6/ Procédé selon la revendication 5, caractérisé par le fait que le déplacement de l'orientation du fil de trame (1) par rapport au fil de chaîne (2) est obtenu au moyen d'une rame dans laquelle les éléments de maintien latéraux ont un déplacement décalé l'un par rapport à l'autre.6 / A method according to claim 5, characterized in that the displacement of the orientation of the weft thread (1) relative to the warp thread (2) is obtained by means of a ream in which the lateral holding elements have an offset displacement relative to each other.
EP19860420045 1985-02-22 1986-02-13 Textile reinforcement for layered products, and process for making it Expired EP0193479B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86420045T ATE40722T1 (en) 1985-02-22 1986-02-13 TEXTILE REINFORCEMENT FOR LAMINATES AND PROCESS FOR THEIR MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8502784 1985-02-22
FR8502784A FR2577947B1 (en) 1985-02-22 1985-02-22 TEXTILE REINFORCEMENT FOR USE IN THE PRODUCTION OF LAMINATE COMPLEXES AND METHOD FOR OBTAINING SAME

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EP0193479A1 true EP0193479A1 (en) 1986-09-03
EP0193479B1 EP0193479B1 (en) 1989-02-08

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US (1) US4696853A (en)
EP (1) EP0193479B1 (en)
JP (1) JPS61194246A (en)
AT (1) ATE40722T1 (en)
CA (1) CA1247985A (en)
DE (1) DE3662061D1 (en)
ES (1) ES296653Y (en)
FI (1) FI860776A (en)
FR (1) FR2577947B1 (en)

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NL1002828C2 (en) * 1996-04-09 1997-10-14 Syncoglas Sa Nv Reinforcement material.
US6360780B1 (en) 2000-08-30 2002-03-26 Owens Corning Fiberglas Technology, Inc. Liner for reinforcing a pipe and method of making the same
FR2864112A1 (en) * 2003-12-18 2005-06-24 Chomarat Composites Woven textile material based on glass fibres for reinforcing moulded components has given ratio between thickness and numbers of weft and warp filaments
EP2657385A1 (en) 2012-04-23 2013-10-30 Chomarat Textiles Industries Textile reinforcement framework and method for manufacturing same
US8613257B2 (en) 2010-03-18 2013-12-24 Toho Tenax Europe Gmbh Stitched multiaxial non-crimp fabrics
CN108138406A (en) * 2015-10-01 2018-06-08 东邦泰纳克丝欧洲有限公司 The textile substrates made of reinforcing fiber
US11047073B2 (en) 2017-04-03 2021-06-29 Toho Tenax Europe Gmbh Method for producing a textile unidirectional fabric
RU221332U1 (en) * 2023-03-16 2023-10-31 Акционерное общество "Центр высокопрочных материалов "Армированные композиты" (АО ЦВМ "Армоком") COMPOSITE BASED ON ARAMID FABRIC

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GB8621563D0 (en) * 1986-09-08 1986-10-15 Oxford Magnet Tech Tension bands
KR950010418B1 (en) * 1991-08-28 1995-09-16 미쯔비시덴끼 가부시끼가이샤 Optical recording & reproducing apparatus for tracking wobbling guide grovbes
JP3324916B2 (en) * 1995-10-16 2002-09-17 日東紡績株式会社 Glass cloth, prepreg, laminated board and multilayer printed wiring board
CA2738987C (en) * 2009-10-02 2012-05-01 Barrday Inc. Woven multi-layer fabrics and methods of fabricating same
CN102802922B (en) 2010-03-18 2014-12-24 东邦泰纳克丝欧洲有限公司 Multiaxial laid scrim having a polymer nonwoven
FR3070402B1 (en) * 2017-08-30 2020-08-28 Safran Aircraft Engines WOVEN FIBROUS TEXTURE FOR THE FORMATION OF A CRANKCASE PREFORM
US11053613B1 (en) * 2020-04-13 2021-07-06 Jessica Huang Woven material, in particular an interwoven material

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US4055697A (en) * 1975-05-19 1977-10-25 Fiberite Corporation Woven material with filling threads at angles other than right angles
FR2425487A1 (en) * 1978-05-12 1979-12-07 Stevens Genin Heat-hardenable synthetic resin reinforcement fabric - contains supplementary heat softenable weft, to avoid fraying when fabric is cut
FR2500495A1 (en) * 1981-02-26 1982-08-27 Hasegawa Chem Ind REINFORCING PLASTIC MATERIAL

Cited By (10)

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Publication number Priority date Publication date Assignee Title
NL1002828C2 (en) * 1996-04-09 1997-10-14 Syncoglas Sa Nv Reinforcement material.
WO1997037835A1 (en) * 1996-04-09 1997-10-16 N.V. Syncoglas S.A. Reinforcement material
US6360780B1 (en) 2000-08-30 2002-03-26 Owens Corning Fiberglas Technology, Inc. Liner for reinforcing a pipe and method of making the same
FR2864112A1 (en) * 2003-12-18 2005-06-24 Chomarat Composites Woven textile material based on glass fibres for reinforcing moulded components has given ratio between thickness and numbers of weft and warp filaments
WO2005061769A1 (en) * 2003-12-18 2005-07-07 Chomarat Composites Fibreglass yarn-based woven cloth for reinforcing moulded parts
US8613257B2 (en) 2010-03-18 2013-12-24 Toho Tenax Europe Gmbh Stitched multiaxial non-crimp fabrics
EP2657385A1 (en) 2012-04-23 2013-10-30 Chomarat Textiles Industries Textile reinforcement framework and method for manufacturing same
CN108138406A (en) * 2015-10-01 2018-06-08 东邦泰纳克丝欧洲有限公司 The textile substrates made of reinforcing fiber
US11047073B2 (en) 2017-04-03 2021-06-29 Toho Tenax Europe Gmbh Method for producing a textile unidirectional fabric
RU221332U1 (en) * 2023-03-16 2023-10-31 Акционерное общество "Центр высокопрочных материалов "Армированные композиты" (АО ЦВМ "Армоком") COMPOSITE BASED ON ARAMID FABRIC

Also Published As

Publication number Publication date
ES296653Y (en) 1988-05-16
FR2577947A1 (en) 1986-08-29
EP0193479B1 (en) 1989-02-08
ES296653U (en) 1987-12-01
DE3662061D1 (en) 1989-03-16
US4696853A (en) 1987-09-29
FI860776A0 (en) 1986-02-21
FI860776A (en) 1986-08-23
ATE40722T1 (en) 1989-02-15
CA1247985A (en) 1989-01-03
JPS61194246A (en) 1986-08-28
FR2577947B1 (en) 1987-03-06

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