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EP1788149B1 - Coated textile - Google Patents

Coated textile Download PDF

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Publication number
EP1788149B1
EP1788149B1 EP06301138A EP06301138A EP1788149B1 EP 1788149 B1 EP1788149 B1 EP 1788149B1 EP 06301138 A EP06301138 A EP 06301138A EP 06301138 A EP06301138 A EP 06301138A EP 1788149 B1 EP1788149 B1 EP 1788149B1
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EP
European Patent Office
Prior art keywords
textile
tracks
track
textile according
coated
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.)
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EP06301138A
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German (de)
French (fr)
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EP1788149A1 (en
Inventor
Carlos Saiz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tissage et Enduction Serge Ferrari SA
Original Assignee
Tissage et Enduction Serge Ferrari SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tissage et Enduction Serge Ferrari SA filed Critical Tissage et Enduction Serge Ferrari SA
Priority to SI200630028T priority Critical patent/SI1788149T1/en
Priority to PL06301138T priority patent/PL1788149T3/en
Publication of EP1788149A1 publication Critical patent/EP1788149A1/en
Application granted granted Critical
Publication of EP1788149B1 publication Critical patent/EP1788149B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0092—Non-continuous polymer coating on the fibrous substrate, e.g. plastic dots on fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/04—Properties of the materials having electrical or magnetic properties
    • D06N2209/041—Conductive

Definitions

  • the invention relates to the field of technical textiles, more particularly coated textiles. It is more particularly a coated textile that can be used in various applications to form tarpaulins and other flexible walls, in the field of industrial vehicles or architecture.
  • the invention is particularly aimed at textiles equipped with an arrangement for electrically detecting a laceration performed on the textile.
  • tarpaulins made of coated textile must have some resistance to laceration, so as to prevent accidental or intentional tearing, insofar as the tarpaulins are used to protect or contain goods.
  • Various solutions have already been proposed to improve the mechanical properties of flexible tarpaulins made of coated textile, which therefore inherently have a certain fragility.
  • it has been proposed to associate with the textile metal reinforcements which can be either contiguous to the coated textile, or integrated directly inside the coated textile, especially inside the textile core. .
  • the object of the invention is to provide a laceration detection system which does not significantly modify the mechanical properties of the textile, and which does not generate significant additional costs in its manufacture.
  • the invention therefore relates to a coated textile, which conventionally comprises a textile core covered on at least one of its faces with a coating layer.
  • This textile comprises a continuous track, which is made from an electrically conductive material. This track is deposited on the coating layer, and forms an electrical resistance that travels at least one area of the textile.
  • this track defines continuous patterns which form nested corrugations in one another.
  • the invention consists in producing an electrical circuit by producing a printed pattern, or more generally deposited on the textile.
  • This pattern thus defines a continuous circuit which, when cut, makes it possible to detect an attempted laceration.
  • the conductive material deposited on the textile being very thin, the mechanical properties of the textile are virtually unchanged, so the textile retains its flexibility and flexibility.
  • the printing of the characteristic pattern can be carried out on the textile during its manufacture, and more precisely after the coating operation, as a complementary finishing operation.
  • the characteristic track has rectilinear portions that are not too long, so as to prevent a laceration that would be parallel to them is not effectively detected.
  • the printed patterns have strong variations in direction, so that any laceration of sufficient length to be harmful, causes the cutting of the electrical circuit, and therefore its detection.
  • the more the patterns are interleaved the more it is difficult to perform a cutting of the fabric following the non-conductive spaces between the portions of electrical tracks, especially since the electrical circuit will be disposed on a non-visible face of the 'outside.
  • the tracks can be separated from each other by a distance of the order of one decimeter.
  • distance between the tracks is meant the distance separating the border of a track from the border of the adjacent track, measured along a perpendicular to the border of the track.
  • the textile may comprise two substantially identical tracks, and running side by side from each other, in a staggered manner.
  • the two tracks each form half of the characteristic electric circuit. They can therefore be electrically connected to one of their ends, so as to close the circuit between the two tracks.
  • the other two opposite ends form the two terminals of the circuit whose continuity must be monitored.
  • the electronic sensing circuit connects in a specific region of the textile, without the need for a return conductor to provide continuity with the opposite end of the track if the latter was unique.
  • one of the tracks acts as a return conductor advantageously occupying a portion of the surface of the textile.
  • a protective layer it may be advantageous to cover the conductive track with a protective layer, so as to avoid any risk of short circuit, and to prevent the degradation of the track because of the different contacts to which the textile may be subjected.
  • the characteristic track can be made in various ways, from conductive materials selected according to the application of the textile.
  • an ink or a conductive varnish can be used either an ink or a conductive varnish.
  • the ink or varnish can be deposited by inkjet printing, sublimation or transfer.
  • the varnish can be deposited by various techniques, including heliography, by means of a cylinder manufactured by gravure.
  • the track may be formed by the deposition of several superimposed layers.
  • the track may be formed of a primary structure consisting of a polymeric base varnish, continuously deposited during the manufacture of the textile.
  • the track also includes a secondary structure, deposited and connected to the primary structure by depositing a conductive ink, by inkjet printing in particular.
  • This secondary structure makes it possible, for example, to make particular connections for specific applications.
  • RFID radiofrequency identification tags
  • the ink of the track can be chosen to be invisible in the light of day, to avoid showing the areas between tracks, according to which a cutout would not cause detection.
  • the invention relates to a coated textile that can be used in multiple applications, and in particular for making the tarpaulins of trucks, but also the walls of capitals or other mobile architecture structure.
  • the coated textile can be produced in a very varied manner, both in terms of the embodiment of the textile core or its coating layers.
  • the coating layer it remains necessary, however, for the coating layer to have a satisfactory state of flatness in order to be able to receive, by a printing method, the characteristic tracks made with conductive ink.
  • conductive inks can be used, depending on the one hand, the coating layer which will be the support, and on the other hand, the desired electrical properties, as well as physicochemical conditions which will be exposed later tracks characteristics.
  • the inks include metal inks, including metal powders, and polymeric inks, in which conduction occurs through the properties conductive polymers such as polythiophene, polyaniline, and polypyrrole including.
  • ink layers can be achieved in various ways, by various printing processes such as screen printing, printing by inkjet techniques, or even by the use of an ink roller ( 20) as illustrated in figure 2 .
  • the shape and patterns of the conductive tracks can be very varied, and adopt in particular a configuration illustrated in FIG. figure 1 .
  • two conductive tracks (2, 3) run parallel, that is to say, remaining at a constant distance from one another.
  • These two tracks (2, 3) are at one end connected to each other by an electrical bridging (4).
  • the two tracks (2, 3) are connected to a device (5) illustrated schematically, and which is sensitive to a modification of the electrical resistance formed by a circuit formed by the two tracks (2, 3) .
  • This resistance is, in a conventional manner, a function of the total length of the track, and its section.
  • the inks used have resistances of a few tens to a few hundred square Ohms ( ⁇ ⁇ ), it being understood that this resistance is measured between the two sides of a square and therefore depends on the resistivity of the material and its thickness.
  • the geometry of the characteristic tracks (2, 3) has an important influence on the ability of the textile to generate an alarm in case of laceration.
  • Multiple geometries can be adopted, including those illustrated in figure 1 .
  • the tracks (2, 3) follow corrugated shapes, in the form of zigzags running on one side or the other of the equipped area.
  • the peaks (12) or peaks of the corrugation (11) penetrate the recessed areas (13) of the adjacent corrugation (10).
  • the undetectable rectilinear laceration of maximum length can take place at the level according to the dotted line (15) of the figure 1 and has substantially the length L of a unit ripple segment.
  • this unit segment length and more generally the pitch (p) of the corrugation, combined with the distance d separating two successive corrugations, as well as the width l of the tracks are chosen to limit the maximum size of the rectilinear lacerations from which it is desired to trigger an alarm.
  • the circuit of the figure 1 has two tracks (2, 3) with a width l of 5 centimeters, separated from each other by an insulating space of about one centimeter wide.
  • the pitch (p) between two undulations, that is to say at a distance separating two ripple peaks (13, 23), is of the order of 50 centimeters.
  • the distance D between two successive corrugations (10, 11) measured perpendicular to the tracks is of the order of 10 centimeters.
  • the invention covers multiple variants with respect to the geometry and shape of these tracks.
  • the face of the textile supporting the conductive tracks may advantageously be covered with a complementary layer, typically a varnish of the insulating acrylic type.
  • a complementary layer typically a varnish of the insulating acrylic type.
  • Such a fabric may be used either alone or in combination with reinforcing structures, such as textiles based on metal son, marketed by the Applicant under the DEFENDER ®.
  • the textile according to the invention has the advantage of allowing the establishment of an alarm system of changes in the mechanical parameters and / or the integrity of the textile, and without requiring the addition of a particular costly mechanism.
  • the characteristic tracks can be present on the textile, and be connected to an alarm system at any time.
  • the textile according to the invention can, as already mentioned, be used as a tarpaulin truck or more generally any flexible architectural structure.
  • the characteristic electric tracks can be used for the detection of the attempted laceration, but also for the detection of mechanical stresses exerted on the fabric, the tracks playing the role of strain gauge. These gauges can for example be used to follow the evolution over time of the mechanical properties of large textile structures, and typically their elongation under load and fluings.
  • This same electrical resistance can be used in the context of fire detection, since a significant rise in temperature can vary the electrical resistance of the tracks, a variation that can be detected by an appropriate device.
  • the analysis of the variation of the electrical resistance makes it possible to measure the temperature and the solar flux received by the solar protection textiles.
  • control / control servo devices can be interfaced with such sensors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Woven Fabrics (AREA)

Abstract

The textile has continuous tracks (2, 3) that are made of an electrically conductive material deposited on a coating layer. The tracks are connected at an end by an electric bridge (4). The tracks form an electric resistance that is along a textile zone. The tracks are connected to a device (5) that is sensible to modification of the resistance formed by the tracks. The tracks define a continuous pattern forming undulations (10, 11) imbricated on each other. The undulations are remote from each other by a distance in the order of a decimeter.

Description

Domaine techniqueTechnical area

L'invention se rattache au domaine des textiles techniques, plus particulièrement des textiles enduits. Elle vise plus particulièrement un textile enduit qui peut être utilisé dans diverses applications pour former des bâches et autres parois souples, dans le domaine des véhicules industriels ou de l'architecture.The invention relates to the field of technical textiles, more particularly coated textiles. It is more particularly a coated textile that can be used in various applications to form tarpaulins and other flexible walls, in the field of industrial vehicles or architecture.

L'invention vise tout particulièrement les textiles équipés d'un agencement permettant de détecter par voie électrique une lacération effectuée sur le textile.The invention is particularly aimed at textiles equipped with an arrangement for electrically detecting a laceration performed on the textile.

Techniques antérieuresPrevious techniques

De manière générale, les bâches réalisées en textile enduit doivent présenter une certaine résistance à la lacération, de manière à empêcher toute déchirure accidentelle ou intentionnelle, dans la mesure où les bâches sont utilisées pour protéger ou contenir des marchandises. Diverses solutions ont déjà été proposées afin d'améliorer les propriétés mécaniques des bâches flexibles réalisées en textile enduit, qui possèdent donc intrinsèquement une certaine fragilité. Parmi les solutions mises en oeuvre industriellement, il a été proposé d'associer au textile des renforts métalliques qui peuvent être soit accolés au textile enduit, soit intégrés directement à l'intérieur du textile enduit, notamment à l'intérieur de l'âme textile.In general, tarpaulins made of coated textile must have some resistance to laceration, so as to prevent accidental or intentional tearing, insofar as the tarpaulins are used to protect or contain goods. Various solutions have already been proposed to improve the mechanical properties of flexible tarpaulins made of coated textile, which therefore inherently have a certain fragility. Among the solutions used industrially, it has been proposed to associate with the textile metal reinforcements which can be either contiguous to the coated textile, or integrated directly inside the coated textile, especially inside the textile core. .

Dans la mesure où ces renforts sont métalliques, et qu'ils sont donc conducteurs électriquement, il a déjà été proposé, notamment par le Demandeur dans les documents FR 2 830 539 et FR 2 821 630 , de réaliser un circuit électrique en connectant tout ou partie de ces renforts métalliques. En surveillant les variations rapides de la résistance électrique d'un tel circuit, il est possible de détecter une tentative de lacération, qui se manifeste par la rupture d'une partie des conducteurs métalliques.Insofar as these reinforcements are metallic, and that they are thus electrically conductive, it has already been proposed, in particular by the Applicant in the documents FR 2,830,539 and FR 2 821 630 , to make an electrical circuit by connecting all or part of these metal reinforcements. By monitoring the rapid changes in the electrical resistance of such a circuit, it is possible to detect an attempted laceration, which is manifested by the breakage of a portion of the metal conductors.

Un système d'alarme relié au dispositif de détection permet donc de signaler toute tentative de lacération. Bien que satisfaisant, ces systèmes présentent toutefois certains inconvénients. En effet, la présence de fils métalliques à l'intérieur, ou sur une des faces du textile, peut modifier la planéité de la bâche, et surtout rendre cette dernière moins flexible. En outre, l'intégration de fils métalliques à l'intérieur du textile enduit, ou sur une face de ce dernier, engendre une augmentation du coût global du textile.An alarm system connected to the detection device therefore makes it possible to report any attempted laceration. Although satisfactory, these systems however have certain disadvantages. Indeed, the presence of metal son inside, or on one side of the textile, can change the flatness of the tarp, and especially make the latter less flexible. In addition, the integration of metal son inside the coated textile, or on one side of the latter, causes an increase in the overall cost of the textile.

L'objectif de l'invention est de fournir un système de détection de lacération qui ne modifie pas notablement les propriétés mécaniques du textile, et qui n'engendre pas de surcoûts importants dans sa fabrication.The object of the invention is to provide a laceration detection system which does not significantly modify the mechanical properties of the textile, and which does not generate significant additional costs in its manufacture.

Exposé de l'inventionPresentation of the invention

L'invention concerne donc un textile enduit, qui comprend de façon classique une âme textile recouverte sur au moins une de ses faces d'une couche d'enduction. Ce textile comporte une piste continue, qui est réalisée à base d'un matériau électriquement conducteur. Cette piste est déposée sur la couche d'enduction, et forme une résistance électrique qui parcourt au moins une zone du textile.The invention therefore relates to a coated textile, which conventionally comprises a textile core covered on at least one of its faces with a coating layer. This textile comprises a continuous track, which is made from an electrically conductive material. This track is deposited on the coating layer, and forms an electrical resistance that travels at least one area of the textile.

Conformément à l'invention, cette piste définit des motifs continus qui forment des ondulations imbriquées les unes dans les autres.According to the invention, this track defines continuous patterns which form nested corrugations in one another.

Autrement dit, l'invention consiste à réaliser un circuit électrique par réalisation d'un motif imprimé, ou plus généralement déposé sur le textile. Ce motif définit donc un circuit continu qui, lorsqu'il est coupé, permet de détecter une tentative de lacération. Le matériau conducteur déposé sur le textile étant de très faible épaisseur, les propriétés mécaniques du textile ne sont quasiment pas modifiées, de sorte le textile conserve sa souplesse et sa flexibilité. L'impression du motif caractéristique peut être réalisée sur le textile lors de sa fabrication, et plus précisément après l'opération d'enduction, en tant qu'opération complémentaire de finissage.In other words, the invention consists in producing an electrical circuit by producing a printed pattern, or more generally deposited on the textile. This pattern thus defines a continuous circuit which, when cut, makes it possible to detect an attempted laceration. The conductive material deposited on the textile being very thin, the mechanical properties of the textile are virtually unchanged, so the textile retains its flexibility and flexibility. The printing of the characteristic pattern can be carried out on the textile during its manufacture, and more precisely after the coating operation, as a complementary finishing operation.

Grâce à l'imbrication des ondulations, la piste caractéristique comporte des portions rectilignes qui ne sont pas de trop forte longueur, de manière à éviter qu'une lacération qui leur serait parallèle ne soit pas efficacement détectée.Thanks to the nesting of the corrugations, the characteristic track has rectilinear portions that are not too long, so as to prevent a laceration that would be parallel to them is not effectively detected.

Au contraire, les motifs imprimés possèdent des fortes variations de direction, de manière à ce que toute lacération de longueur suffisante pour être dommageable, provoque la coupure du circuit électrique, et par conséquent sa détection. En effet, plus les motifs sont imbriqués, plus il est difficile de réaliser une découpe du tissu suivant les espaces non conducteurs entre les portions de pistes électriques, et ce d'autant plus que le circuit électrique sera disposé sur une face non visible de l'extérieur.On the contrary, the printed patterns have strong variations in direction, so that any laceration of sufficient length to be harmful, causes the cutting of the electrical circuit, and therefore its detection. Indeed, the more the patterns are interleaved, the more it is difficult to perform a cutting of the fabric following the non-conductive spaces between the portions of electrical tracks, especially since the electrical circuit will be disposed on a non-visible face of the 'outside.

En pratique, on considère que pour assurer une protection suffisante, il convient de prévenir et empêcher les déchirures ou lacérations qui permettent le passage d'un bras à l'intérieur de la bâche, et le retrait de marchandises d'une taille de l'ordre de la dizaine de centimètres. C'est pourquoi les pistes peuvent être éloignées les unes des autres d'une distance de l'ordre du décimètre. Par distance entre les pistes, on entend la distance séparant la bordure d'une piste de la bordure de la piste adjacente, mesurée selon une perpendiculaire à la bordure de la piste.In practice, it is considered that to ensure adequate protection, it is necessary to prevent and prevent tears or lacerations that allow the passage of an arm inside the tarpaulin, and the withdrawal of goods of a size of the order of ten centimeters. This is why the tracks can be separated from each other by a distance of the order of one decimeter. By distance between the tracks, is meant the distance separating the border of a track from the border of the adjacent track, measured along a perpendicular to the border of the track.

Avantageusement en pratique, le textile peut comporter deux pistes sensiblement identiques, et cheminant côte à côte l'une de l'autre, de façon décalée. De cette manière, les deux pistes forment chacune la moitié du circuit électrique caractéristique. Elles peuvent donc être connectées électriquement à l'une de leurs extrémités, de manière à refermer le circuit entre les deux pistes. De la sorte, les deux autres extrémités opposées forment les deux bornes du circuit dont la continuité doit être surveillée. Grâce à cette caractéristique, le circuit électronique de détection se connecte dans une région précise du textile, sans qu'il soit nécessaire de prévoir de conducteur de retour pour assurer la continuité avec l'extrémité opposée de la piste si cette dernière était unique.Advantageously, in practice, the textile may comprise two substantially identical tracks, and running side by side from each other, in a staggered manner. In this way, the two tracks each form half of the characteristic electric circuit. They can therefore be electrically connected to one of their ends, so as to close the circuit between the two tracks. In this way, the other two opposite ends form the two terminals of the circuit whose continuity must be monitored. With this feature, the electronic sensing circuit connects in a specific region of the textile, without the need for a return conductor to provide continuity with the opposite end of the track if the latter was unique.

En d'autres termes, l'une des pistes assure le rôle de conducteur retour en occupant avantageusement une portion de la surface du textile.In other words, one of the tracks acts as a return conductor advantageously occupying a portion of the surface of the textile.

En pratique, il peut être avantageux de recouvrir la piste conductrice d'une couche de protection, de manière à éviter tout risque de court-circuit, et pour prévenir la dégradation de la piste du fait des différents contacts auxquels peut être soumis le textile.In practice, it may be advantageous to cover the conductive track with a protective layer, so as to avoid any risk of short circuit, and to prevent the degradation of the track because of the different contacts to which the textile may be subjected.

Il est également possible le cas échéant d'associer un tel textile avec une couche de renforcement, qui peut elle-même intégrer des fils ou des renforts métalliques empêchant la propagation d'un début de lacération.It is also possible, where appropriate, to associate such a textile with a reinforcing layer, which may itself incorporate wires or metal reinforcements preventing the propagation of a beginning of laceration.

En pratique, la piste caractéristique peut être réalisée de diverses manières, à partir de matériaux conducteurs choisis en fonction de l'application du textile. Ainsi, il est possible d'utiliser soit une encre soit un vernis conducteur. L'encre ou le vernis peut être déposée par impression jet d'encre, sublimation ou transfert. Le vernis peut être déposé par différentes techniques, et notamment, par héliographie, au moyen d'un cylindre fabriqué par héliogravure.In practice, the characteristic track can be made in various ways, from conductive materials selected according to the application of the textile. Thus, it is possible to use either an ink or a conductive varnish. The ink or varnish can be deposited by inkjet printing, sublimation or transfer. The varnish can be deposited by various techniques, including heliography, by means of a cylinder manufactured by gravure.

Dans certains cas de figure, il peut être avantageux que la piste soit réalisée par le dépôt de plusieurs couches superposées. Ainsi, par exemple, la piste peut être formée d'une structure primaire constituée par un vernis polymérique de base, déposé en continu lors de la fabrication du textile. La piste inclut également une structure secondaire, déposée et connectée sur le la structure primaire par dépôt d'une encre conductrice, par impression jet d'encre notamment. Cette structure secondaire permet par exemple d'effectuer des connections particulières pour des applications spécifiques. On peut par exemple citer la réalisation d'antennes fractales, ou la formation d'étiquettes d'identification radiofréquence (RFID). Cette possibilité de combiner plusieurs structures superposées permet de réaliser des circuits très précis, typiquement avec des résolutions de l'ordre du dixième de millimètre sur des textiles incluant l'essentiel du réseau qui a déjà été pré-imprimé.In some cases, it may be advantageous for the track to be formed by the deposition of several superimposed layers. Thus, for example, the track may be formed of a primary structure consisting of a polymeric base varnish, continuously deposited during the manufacture of the textile. The track also includes a secondary structure, deposited and connected to the primary structure by depositing a conductive ink, by inkjet printing in particular. This secondary structure makes it possible, for example, to make particular connections for specific applications. One can for example mention the realization of fractal antennas, or the formation of radiofrequency identification tags (RFID). This possibility of combining several superimposed structures makes it possible to produce very precise circuits, typically with resolutions of the order of one tenth of a millimeter on textiles including most of the network which has already been pre-printed.

Avantageusement en pratique, l'encre de la piste peut être choisie comme étant invisible à la lumière du jour, pour ne pas laisser apparaître les zones entre pistes, selon laquelle une découpe ne provoquerait pas de détection.Advantageously in practice, the ink of the track can be chosen to be invisible in the light of day, to avoid showing the areas between tracks, according to which a cutout would not cause detection.

Description sommaire des figuresBrief description of the figures

La manière de réaliser l'invention ainsi que les avantages qui en découlent ressortiront bien de la description du mode de réalisation qui suit, à l'appui des figures annexées dans lesquelles :

  • La figure 1 est une vue de face d'une feuille de textile enduit conforme à l'invention.
  • La figure 2 est une vue de côté d'un cylindre d'impression permettant de réaliser le textile de la figure 1.
The manner of carrying out the invention as well as the advantages which result therefrom will emerge from the description of the embodiment which follows, in support of the appended figures in which:
  • The figure 1 is a front view of a coated textile sheet according to the invention.
  • The figure 2 is a side view of a printing cylinder for producing the textile of the figure 1 .

Manière de réaliser l'inventionWay of realizing the invention

Comme déjà évoqué, l'invention concerne un textile enduit qui peut être utilisé dans de multiples applications, et notamment pour réaliser les bâches de camions, mais également les parois de chapiteaux ou autre structure d'architecture mobile.As already mentioned, the invention relates to a coated textile that can be used in multiple applications, and in particular for making the tarpaulins of trucks, but also the walls of capitals or other mobile architecture structure.

De façon générale, le textile enduit peut être réalisé de manière très variée, tant au niveau de la réalisation de l'âme textile ou de ses couches d'enduction.In general, the coated textile can be produced in a very varied manner, both in terms of the embodiment of the textile core or its coating layers.

Il reste toutefois nécessaire que la couche d'enduction présente un état de planéité satisfaisant pour pouvoir recevoir par un procédé d'impression les pistes caractéristiques réalisées à base d'encre conductrice. Différentes encres conductrices peuvent être utilisées, en fonction d'une part, de la couche d'enduction qui en sera le support, et d'autre part, des propriétés électriques souhaitées, ainsi que les conditions physico-chimiques auxquelles seront exposées ultérieurement les pistes caractéristiques. Parmi les encres susceptibles d'être utilisées, on peut citer les encres métalliques, incluant des poudres de métaux, et les encres polymériques, dans lesquelles la conduction intervient grâce aux propriétés conductrices de polymères tel que le polythiophène, le polyaniline, et le polypyrrole notamment.It remains necessary, however, for the coating layer to have a satisfactory state of flatness in order to be able to receive, by a printing method, the characteristic tracks made with conductive ink. Different conductive inks can be used, depending on the one hand, the coating layer which will be the support, and on the other hand, the desired electrical properties, as well as physicochemical conditions which will be exposed later tracks characteristics. Among the inks that may be used include metal inks, including metal powders, and polymeric inks, in which conduction occurs through the properties conductive polymers such as polythiophene, polyaniline, and polypyrrole including.

Le dépôt de ces couches d'encre peut se réaliser de différentes manières, par des procédés d'impression variés que sont la sérigraphie, l'impression par des techniques de jets d'encre, ou bien encore par l'emploi de rouleau encreur (20) tel qu'illustré à la figure 2.The deposition of these ink layers can be achieved in various ways, by various printing processes such as screen printing, printing by inkjet techniques, or even by the use of an ink roller ( 20) as illustrated in figure 2 .

La forme et les motifs des pistes conductrices peuvent être très variées, et adopter notamment une configuration illustrée à la figure 1. Ainsi, on observe que deux pistes conductrices (2, 3) cheminent parallèlement, c'est-à-dire en restant à distance constante l'une de l'autre. Ces deux pistes (2, 3) sont à une extrémité reliée entre elles par un pontage électrique (4). A l'autre extrémité, les deux pistes (2, 3) sont reliées à un dispositif (5) illustré schématiquement, et qui est sensible à une modification de la résistance électrique formée par un circuit constitué par les deux pistes (2, 3). Cette résistance est, de manière classique, fonction de la longueur totale de la piste, et de sa section. A titre indicatif, les encres utilisées présentent des résistances de quelques dizaines à quelques centaines d'Ohms carrés (Ω□), étant entendu que cette résistance est mesurée entre les deux côtés d'un carré et dépend donc de la résistivité du matériau et de son épaisseur.The shape and patterns of the conductive tracks can be very varied, and adopt in particular a configuration illustrated in FIG. figure 1 . Thus, it is observed that two conductive tracks (2, 3) run parallel, that is to say, remaining at a constant distance from one another. These two tracks (2, 3) are at one end connected to each other by an electrical bridging (4). At the other end, the two tracks (2, 3) are connected to a device (5) illustrated schematically, and which is sensitive to a modification of the electrical resistance formed by a circuit formed by the two tracks (2, 3) . This resistance is, in a conventional manner, a function of the total length of the track, and its section. As an indication, the inks used have resistances of a few tens to a few hundred square Ohms (Ω □ ), it being understood that this resistance is measured between the two sides of a square and therefore depends on the resistivity of the material and its thickness.

La géométrie des pistes caractéristiques (2, 3) a une influence importante sur la capacité du textile à générer une alarme en cas de lacération. De multiples géométries peuvent être adoptées, et notamment celles illustrées à la figure 1. Dans ce cas, les pistes (2, 3) épousent des formes ondulées, sous forme de zigzags cheminant d'un côté ou de l'autre de la zone équipée. De la sorte, les sommets (12) ou pointes de l'ondulation (11) pénètrent dans les zones en creux (13) de l'ondulation adjacente (10). De tel sorte, la lacération rectiligne indétectable de longueur maximum peut avoir lieu au niveau selon la ligne pointillée (15) de la figure 1, et a sensiblement la longueur L d'un segment unitaire d'ondulation. Le choix de cette longueur de segment unitaire et plus généralement du pas (p) de l'ondulation, combiné avec la distance d séparant deux ondulations successives, ainsi que la largeur ℓ des pistes sont choisies pour limiter la taille maximum des lacérations rectilignes de laquelle on souhaite déclencher une alarme.The geometry of the characteristic tracks (2, 3) has an important influence on the ability of the textile to generate an alarm in case of laceration. Multiple geometries can be adopted, including those illustrated in figure 1 . In this case, the tracks (2, 3) follow corrugated shapes, in the form of zigzags running on one side or the other of the equipped area. In this way, the peaks (12) or peaks of the corrugation (11) penetrate the recessed areas (13) of the adjacent corrugation (10). In this way, the undetectable rectilinear laceration of maximum length can take place at the level according to the dotted line (15) of the figure 1 and has substantially the length L of a unit ripple segment. The choice of this unit segment length and more generally the pitch (p) of the corrugation, combined with the distance d separating two successive corrugations, as well as the width ℓ of the tracks are chosen to limit the maximum size of the rectilinear lacerations from which it is desired to trigger an alarm.

A titre d'exemple, le circuit de la figure 1 possède deux pistes (2, 3) d'une largeur ℓ de 5 centimètres, séparées entre elles d'un espace isolant d'un centimètre de large environ. Le pas (p) entre deux ondulations, c'est-à-dire à distance séparant deux sommets (13, 23) d'ondulation est de l'ordre de 50 centimètres. La distance D séparant deux ondulations successives (10, 11) mesurées perpendiculairement aux pistes est de l'ordre de 10 centimètres.For example, the circuit of the figure 1 has two tracks (2, 3) with a width ℓ of 5 centimeters, separated from each other by an insulating space of about one centimeter wide. The pitch (p) between two undulations, that is to say at a distance separating two ripple peaks (13, 23), is of the order of 50 centimeters. The distance D between two successive corrugations (10, 11) measured perpendicular to the tracks is of the order of 10 centimeters.

Bien entendu, l'invention couvre de multiples variantes en ce qui concerne la géométrie et la forme de ces pistes.Of course, the invention covers multiple variants with respect to the geometry and shape of these tracks.

La face du textile supportant les pistes conductrices peut avantageusement être recouverte d'une couche complémentaire, typiquement un vernis du type acrylique isolant. Un tel textile peut être utilisé soit seul, soit en combinaison avec des structures de renforcement, tels que des textiles à base de fils métalliques, commercialisés par le Demandeur sous la marque DEFENDER®.The face of the textile supporting the conductive tracks may advantageously be covered with a complementary layer, typically a varnish of the insulating acrylic type. Such a fabric may be used either alone or in combination with reinforcing structures, such as textiles based on metal son, marketed by the Applicant under the DEFENDER ®.

Il ressort de ce qui précède que le textile conforme à l'invention présente l'avantage de permettre la mise en place d'un système d'alarme des modifications des paramètres mécaniques et/ou de l'intégrité du textile, et ce sans nécessiter l'adjonction d'un mécanisme particulier coûteux.It follows from the foregoing that the textile according to the invention has the advantage of allowing the establishment of an alarm system of changes in the mechanical parameters and / or the integrity of the textile, and without requiring the addition of a particular costly mechanism.

En d'autres termes, les pistes caractéristiques peuvent être présentes sur le textile, et être connectées à un système d'alarme à tout moment.In other words, the characteristic tracks can be present on the textile, and be connected to an alarm system at any time.

Applications industriellesIndustrial applications

Le textile conforme à l'invention peut, comme déjà évoqué, être utilisé en tant que bâche de camions ou plus généralement de toute structure d'architecture souple. Les pistes électriques caractéristiques peuvent être utilisées pour la détection de la tentative de lacération, mais également pour la détection de contraintes mécaniques exercées sur le tissu, les pistes jouant le rôle de jauge de contraintes. Ces jauges peuvent par exemple permettre de suivre l'évolution dans le temps des propriétés mécaniques des structures textiles de grandes dimension, et typiquement leur allongement sous charge et les fluages. Cette même résistance électrique peut être utilisée dans le cadre de la détection d'incendie, dans la mesure où une élévation importante de température peut faire varier la résistance électrique des pistes, variation qui peut être détectée par un dispositif approprié. De même, l'analyse de la variation de la résistance électrique permet de mesurer la température et le flux solaire reçu par les textiles de protection solaire. Ainsi, des dispositifs d'asservissement de contrôle/commande peuvent être interfacés avec de tels capteurs.The textile according to the invention can, as already mentioned, be used as a tarpaulin truck or more generally any flexible architectural structure. The characteristic electric tracks can be used for the detection of the attempted laceration, but also for the detection of mechanical stresses exerted on the fabric, the tracks playing the role of strain gauge. These gauges can for example be used to follow the evolution over time of the mechanical properties of large textile structures, and typically their elongation under load and fluings. This same electrical resistance can be used in the context of fire detection, since a significant rise in temperature can vary the electrical resistance of the tracks, a variation that can be detected by an appropriate device. Similarly, the analysis of the variation of the electrical resistance makes it possible to measure the temperature and the solar flux received by the solar protection textiles. Thus control / control servo devices can be interfaced with such sensors.

Claims (9)

  1. Coated textile (1) comprising a textile core covered on at least one of its sides with a coating layer comprising a continuous track (2, 3) based on an electrically conducting material deposited on the said coating layer and forming an electrical resistor passing over at least one region of the textile, characterized in that the track defines a continuous pattern forming undulations (10, 11) imbricated in one another.
  2. Coated textile according to Claim 1, characterized in that the undulations (10, 11) are a distance D of the order of one decimetre apart.
  3. Coated textile according to Claim 1, characterized in that it comprises two substantially identical tracks (2, 3) running side by side and offset from one another.
  4. Coated textile according to Claim 3, characterized in that the two tracks (2, 3) are electrically connected at one of their ends (4).
  5. Coated textile according to Claim 1, characterized in that it comprises a protective layer covering the conducting track.
  6. Textile according to Claim 1, characterized in that the track is made from a conducting lacquer or ink.
  7. Textile according to Claim 6, characterized in that the track is produced by heliography, inkjet printing, sublimation or transfer.
  8. Coated textile according to Claim 1, characterized in that the ink of the track is invisible in daylight.
  9. Textile according to Claim 1, characterized in that the track is produced by depositing several superposed layers.
EP06301138A 2005-11-17 2006-11-09 Coated textile Active EP1788149B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200630028T SI1788149T1 (en) 2005-11-17 2006-11-09 Coated textile
PL06301138T PL1788149T3 (en) 2005-11-17 2006-11-09 Coated textile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0553496A FR2893330A1 (en) 2005-11-17 2005-11-17 Coated textile for forming e.g. tarpaulin, has continuous tracks that are made of electrically conductive material deposited on coating layer and define continuous pattern forming undulations imbricated on each other

Publications (2)

Publication Number Publication Date
EP1788149A1 EP1788149A1 (en) 2007-05-23
EP1788149B1 true EP1788149B1 (en) 2008-03-12

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EP06301138A Active EP1788149B1 (en) 2005-11-17 2006-11-09 Coated textile

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EP (1) EP1788149B1 (en)
AT (1) ATE389051T1 (en)
DE (1) DE602006000700T2 (en)
ES (1) ES2301148T3 (en)
FR (1) FR2893330A1 (en)
PL (1) PL1788149T3 (en)
PT (1) PT1788149E (en)
SI (1) SI1788149T1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489561A2 (en) 2011-02-18 2012-08-22 Sioen Industries NV Elastic tarpaulin with tamper detection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023128975A1 (en) 2023-10-20 2025-04-24 Erhard Binder Crack detection device and object with at least one such

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US5385785A (en) * 1993-08-27 1995-01-31 Tapeswitch Corporation Of America Apparatus and method for providing high temperature conductive-resistant coating, medium and articles
FR2821630B1 (en) * 2001-03-02 2003-06-27 Ferrari S Tissage & Enduct Sa FABRIC HAVING ANTI-LACERATION PROPERTIES
FR2830539B1 (en) * 2001-10-10 2004-02-20 Ferrari S Tissage & Enduct Sa FABRIC INCORPORATING METAL THREADS
US6668380B2 (en) * 2002-02-28 2003-12-30 Koninklijke Philips Electronics N.V. Selectively detachable and wearable electrode/sensors
EP1542861B1 (en) * 2002-09-16 2018-10-17 Sage Automotive Interiors, Inc. Static dissipative textile and method for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489561A2 (en) 2011-02-18 2012-08-22 Sioen Industries NV Elastic tarpaulin with tamper detection

Also Published As

Publication number Publication date
FR2893330A1 (en) 2007-05-18
EP1788149A1 (en) 2007-05-23
ES2301148T3 (en) 2008-06-16
DE602006000700D1 (en) 2008-04-24
SI1788149T1 (en) 2008-06-30
PL1788149T3 (en) 2008-08-29
ATE389051T1 (en) 2008-03-15
PT1788149E (en) 2008-03-31
DE602006000700T2 (en) 2009-03-19

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