PRINTED ELECTRONIC TEXTILE COMPONENT

Description

[0001] The present invention relates to a component having electronic functionalities, which is notably lightweight, durable and drapable.

[0002] EP 3 442 309 describes an electrically conductive flexible textile planar element comprising a conductive ink print, obtained by screen printing application of an aqueous polymer dispersion containing electrically conductive particles on a previously smoothed textile surface, either by hot calendering, or by application of a thermoplastic polymer and hot calendering, although this solution is criticized there. This polymer is chosen from polyesters, polyamides, polyolefins, polyurethanes, PVC, polyacrylonitrile, polyvinyl alcohol. The textile support layer can be very diverse, such as a canvas, a knit, a woven fabric or a fleece. The document indicates a weight of this layer less than or equal to 250 g / m2, in particular from 20 to 150 g / m2, preferably from 40 to 100 g / m2.The list of usable textile structures, like their weight per unit area, does not indicate an effective consideration of the problem of producing a light, drapable and durable element. WO 2013 / 096356 A1 describes a drapable electronic component, comprising an electronic layer formed by an ink print and a protective layer.

[0003] An objective of the invention is to provide a textile having electronic functionalities, which is in particular light, drapable and particularly durable, in particular mechanically and chemically resistant, in particular with respect to internal and external environmental constraints, and in particular the presence of water and / or organic solvents and / or ambient humidity and / or oxygen in the air.

[0004] One objective of the invention is in particular to propose such a textile which does not require pretreatment of the initial textile structure before inking, such as smoothing by calendering or the application of a primary polymer layer, while still allowing very precise and durable patterns to be printed.

[0005] Other objectives of the invention will appear from the following.

[0006] The compromise between durability, lightness and drapability is difficult to achieve. The invention nevertheless proposes a component with electronic functionalities. In particular, this component is at the same time light, durable and drapable. A drapable electronic component is a surface electronic component which is sufficiently flexible and deformable to be able to cover an object of volume shape, by matching this volume shape as best as possible to thus drape said object. Nevertheless, the drapable electronic component is not necessarily used to cover an object and can have various applications. The component is durable, in the sense that the printing of electronically functional ink, in particular conductive ink, is protected from mechanical stresses and environmental or climatic stresses, in particular humidity and oxygen, in order to ensure good longevity of the component.Indeed, metals, like conductive metals (with the exception of gold), react with water, oxygen, and / or sulfur. Thus, conductive metals tend to degrade over time into semiconductors, becoming much less efficient at moving electricity. Silver is particularly prone to the effects of oxidation, especially in humid climates.

[0007] The component of the invention thus comprises an electronic circuit layer and a protective layer. One idea underlying the invention is to provide that the protective layer is both a protective layer and a support layer, but that the electronic circuit layer is in direct contact with the textile. The idea is to avoid the interposition of a primer layer (for example of polymer) or a smoothing treatment, for example by calendering, which are solutions that can have harmful consequences on the mechanical strength of the textile by crushing and damaging the fibers and can have harmful consequences on the strength and durability of adhesion between the ink and the calendered textile surface or the surface covered with a thermoplastic polymer, due for example to physicochemical incompatibility.

[0008] Thus, the protective layer forms a complex which comprises a textile and a protective polymer layer, covering one side of the textile, while the electronic circuit layer is deposited on the textile, on the side of the textile opposite the deposition side of the protective polymer layer. The electronic circuit layer (or electronics layer) is therefore formed directly on the textile. The electronic circuit layer is advantageously formed by printing with suitable ink.

[0009] In the following description, excluding examples, the isolated numerical values ​​or those in an interval cover the values ​​indicated in the strict sense, and the surrounding values ​​that a person skilled in the art will consider to be included in the numerical value indicated.

[0010] Textile is a fabric obtained by weaving continuous threads. The following characteristics are those of the fabric after weaving, and in the absence of structural modifications imposed by post-weaving treatment such as calendering.

[0011] The textile has a thickness between 25 and 500 µm, in particular between 25 and 300 µm, in particular between 25 and 150 µm, more particularly between 25 and 50, 60 or 70 µm.

[0012] The textile is characterized by a coverage rate over 25 µm of thickness greater than or equal to 0.5, typically from 0.5 to 3, in particular between 0.6 and 2.5, in particular between 0.7 and 2, in particular between 0.7 and 1.5, the TC25 being calculated as follows: TC25 = [(number of filaments / cm × diameter of 1 filament in cm) warp + (number of filaments / cm × diameter of 1 filament in cm) weft] × 25 / Thickness of the textile measured in µm. By number of filaments per cm, we mean the number of filaments constituting the warp and weft threads.

[0013] In one embodiment, very fine fabrics are used, in particular having a thickness in the following ranges: 25 to 70 µm, 25 to 60 µm, 25 to 50 µm. For these very fine fabrics, the fabric can be characterized by its overall coverage rate, or TC, in addition to or instead of TC25. This TC is in particular greater than or equal to 1.5, in particular between 1.5 and 3, preferably between 1.8 and 3, the TC being calculated as follows: TC = (number of filaments / cm × diameter of 1 filament in cm) warp + (number of filaments / cm × diameter of 1 filament in cm) weft.

[0014] Tissue thickness measurements are carried out using a micrometer according to standard NF EN ISO 5084 with a circular probe surface of 2 cm 2< and a probe pressure of 500 g / cm 2< .

[0015] According to a characteristic of the invention, the fabric is not calendered.

[0016] The fabric may have a weight of between 20 and 450 g / m 2< , in particular between 20 and 350 g / m 2< , typically between 20 and 250 g / m 2< , in particular between 20 and 100 g / m 2< .

[0017] If the fabric is made with synthetic yarns (e.g. polyamide, polyester), the number of threads per cm in warp and weft is notably between 10 and 50 threads / cm, for example 20 or 30 to 50 threads / cm.

[0018] If the fabric is made with inorganic yarns (e.g. glass, basalt) or of natural origin (e.g. cellulose and derivatives, linen), the number of threads per cm in warp and weft is notably between 6 and 30, in particular between 8 and 30, in particular between 10 and 25 threads / cm.

[0019] The textile has a structure that is both very thin and very dense, leading to a flat surface state, suitable for precise and durable printing of conductive ink. It is thus easy to obtain that the printed electronic layer is in the form of a pattern of particularly high resolution, that is to say made up of surfaces or elements of very precise dimensions, and / or particularly fine and complex. The drapable electronic component can thus have a high resolution or a high precision in the production, depending on the application, for the capture, the emission of electronic signals, in particular electrical, or the formation of electronic circuits, in particular electrical, surface.

[0020] Furthermore, the protective layer combines such a textile and a polymer layer, this combination also making it possible to confer not only the desired drapability, but also the mechanical strength of the printed electronic component making it possible to ensure the durability of the component, with in particular mechanical strength, in particular resistance to mechanical fatigue and tearing, as well as chemical resistance, in particular impermeability to water, humidity, air, dust and oxygen. The printed electronic layer is thus particularly well protected from external mechanical stresses and external environmental pollution, and in particular from oxidation phenomena.In addition, the polymer layer gives the protective layer better resistance, resulting in the protective layer being less deformable than the textile during handling, including when printing ink on the opposite side, which makes it possible, on the one hand, to obtain homogeneous and well-defined tracks, having very good electronic properties, for example conductivity, and, on the other hand, to manufacture the component by continuous processes, for example of the roll-to-roll type. The protective layer also provides electrical insulation of the component by preventing the diffusion of electrical charges through the protective layer.

[0021] Electrical conductivity characterizes the ability of a material to allow electrical charges to move freely and therefore allow the passage of an electric current. Electrical conductivity is the inverse of resistivity. This resistivity corresponds to the resistance of a material one meter long and one square meter in cross-section. It is expressed in ohmmeters or ohmcentimeters (Ωm or Ωcm). The evolution of resistivity can vary according to the temperature and depends on the nature of the material. Metals (copper, gold, silver, aluminum, etc.) have the lowest resistivity values ​​at room temperature, less than 10 -5 < Ωcm. Materials with a resistivity greater than 10 8 < Ωcm are considered insulating (such as glass, mica, silica). In the case of semiconductor materials, the resistivity is between 10 -3 < Ωcm and 10 4 < Ωcm.

[0022] The drapable electronic component is preferably obtained using a manufacturing process including the manufacture of the protective layer by depositing the polymer on a first side of a textile, the drying and crosslinking of this polymer, and then only the printing of the ink on the other side of the textile. The protective layer makes it possible to promote the deposition of the ink on the opposite side, the protective layer having a higher resistance than the fabric alone. When the fabric allows it due to its good resistance during printing, it is also possible to proceed first by printing the ink, then by depositing the polymer. Preferably, this printing is carried out by screen printing the ink on the textile, or by offset technology.

[0023] The invention also relates to this manufacturing process and the product obtained by this process. ➢ The polymer layer :

[0024] The protective layer (textile and protective polymer) may have a weight of between approximately 21 and approximately 700 g / m 2< , typically between approximately 21 and approximately 500 g / m 2< , in particular between approximately 21 and approximately 320 g / m 2< , in particular between approximately 21 and approximately 130 g / m 2< .

[0025] The dry carryover rate of the protective polymer may in particular be between 5 and 50%, preferably between 5 and 30% by weight, better still between 10 and 30%. The dry carryover rate is the weight ratio of the dry protective polymer to the textile.

[0026] The protective polymer layer may consist of or include a coating that coats or impregnates the textile, the polymer being able in particular to be deposited by a doctor blade on the dedicated side of the textile, or by other deposition techniques that do not apply mechanical action to the fabric that is likely to significantly modify its structure. It may also be formed from a film applied and laminated to the textile.

[0027] In the first case in which the polymer coats the textile, this polymer may in particular comprise or consist of: polyurethane, polyester, polycarbonate, polyether, polyethylene, polypropylene, polyvinyl alcohol, poly(vinyl acetate), poly(ethylene-vinyl acetate), poly(acrylate-methacrylate), poly(vinyl chloride), synthetic rubber, silicone, copolymers of these polymers.

[0028] In a particular embodiment, the polymer is a polyurethane (PU), and this PU can advantageously be based on polyether, polyester or polycarbonate.

[0029] According to a particularly preferred embodiment, the polyurethane is a crosslinked PU based on polyether, polyester or polycarbonate, and this PU is obtained from the crosslinking (1) of a single-component polyurethane elastomer having a modulus at 100% elongation of less than or equal to 50 MPa, typically between 1 and 50 MPa, in particular between 1 and 40 MPa, in particular between 1 and 35 MPa, according to standard DIN 53504, implemented in organic solvent phase, (2) by a crosslinker, at a rate of a proportion of dry crosslinker relative to the dry elastomer of between approximately 5% and approximately 100% by weight, in particular between approximately 7 and approximately 80% by weight, in particular between approximately 8 and approximately 75% by weight.

[0030] A polyurethane comprises a stiff part (isocyanate) and a flexible part (polyol). A person skilled in the art knows how to find the compromise between the isocyanate / polyol ratio and the nature of the components to obtain the elastomer of desired stiffness, characterized by the modulus at 100% elongation. Preferably, the elastomer used in the protective polymer layer is single-component, the isocyanate having reacted with the polyol, then with the chain extender or crosslinking agent, forming an elastomer generally still containing reactive functions such as NCO and alcohol. A person skilled in the art may refer to the literature on the production of copolymers or elastomers obtained from isocyanate, polyol and chain extenders or crosslinking agent, in particular the Thesis on Polymer and Composite Materials by Ségolène Hibon, INSA Lyon, France, 2006.

[0031] The coating composition is preferably supplemented with a crosslinker, in particular an isocyanate or a melamine, or a mixture of the two. Isocyanate means both an isocyanate and a polyisocyanate, alone or in a mixture with one or more other isocyanates and / or polyisocyanates. The term "isocyanate" should be understood here as including the terms "isocyanate" and "polyisocyanate". Polyisocyanates are preferred. As regards melamine, this may in particular be melamine itself (1,3,5-triazine-2,4,6-triamine) or a compound or resin containing melamine, for example a melamine-formaldehyde resin.

[0032] According to one embodiment, the polyurethane (and the starting elastomer) is polyether-based. In particular, the polyether-based polyurethane is linear or branched and comprises a polyether-type polyol part and an isocyanate part.

[0033] According to another embodiment, the polyurethane (and the starting elastomer) is polyester-based. In particular, the polyester-based polyurethane is linear or branched and comprises a polyester-type polyol part and an isocyanate part.

[0034] According to another embodiment, the polyurethane (and the starting elastomer) is polycarbonate-based. In particular, the polycarbonate-based polyurethane is linear or branched and comprises a polycarbonate-type polyol part and an isocyanate part.

[0035] As for the elastomer and the crosslinker, the isocyanate part is preferably aliphatic, in fact aromatic isocyanates have the disadvantage of yellowing over time, which makes them less preferred, even if they are usable.

[0036] In a preferred embodiment, the protective layer is obtained by solvent-based polyurethane coating. The step of coating a polymer according to the invention is carried out by techniques conventionally used in textile coating, such as direct coating. The term "direct coating" means coating by direct deposition, for example using a doctor blade, a cylinder, an air knife, a scarf, a Meyer bar (or the Champion process).

[0037] In particular, a single-component elastomer (formed in particular from the isocyanate, the polyol and the chain extender or the crosslinking agent) is formed or started from, in solution in the solvent. A film forms naturally during the evaporation of the solvent, and this film can be formed in contact with the fabric in the embodiment where the fabric is coated or impregnated.

[0038] The solvent of the polymer is an organic solvent and may in particular be chosen from the group consisting of aromatic solvents, alcohols, ketones, esters, dimethylformamide and n-methylpyrrolidone. In a particular embodiment the solvent is chosen from the group consisting of toluene, xylene, isopropanol, butanol, 1-methoxypropan-2-ol, methyl ethyl ketone, acetone, butanone, ethyl acetate, dimethylformamide, n-methylpyrrolidone, and a mixture of at least two of them. For example, a mixture of toluene and isopropanol.

[0039] In one embodiment, the solvent-based polyurethane may be characterized by its concentration of between 20 and 50% by weight of uncrosslinked PU, in particular single-component elastomer, relative to the PU and solvent mixture. In one embodiment, this solvent-based polyurethane, in particular the elastomer in solution in the solvent, may be characterized by a viscosity of less than 100,000 mPa.s at 23°C, preferably between 5,000 and 60,000 mPa.s at 23°C (DIN EN ISO / A3 standard).

[0040] The polymer, such as PU, is dried and crosslinked upon contact with the fabric. In particular, the drying and crosslinking step first comprises drying, for example at a temperature between about 90 and about 120°C, and then crosslinking at a temperature between about 140 and about 210°C.

[0041] The fabric coating composition of the present invention may further comprise additives. Said additives may be any additive commonly used in fabric coating compositions. They are in particular chosen from the group consisting of viscosity modifiers, UV stabilizers, colorants and dispersants.

[0042] In one embodiment, the method comprises, after drying and crosslinking, one or more post-treatment steps giving the fabric anti-fouling and / or water-repellent properties. Anti-fouling treatment means a treatment using anti-static and / or anti-tack products. Water-repellent treatment means a treatment using fluorinated resins with or without crosslinking agent for the fluorinated resin, for example an isocyanate. The water-repellent treatment is followed by a drying / crosslinking step. In one embodiment, the post-treatment is applied by any method known to those skilled in the art, in particular by padding, coating, spraying or plasma treatment.

[0043] In another case, the polymer layer is provided to consist of a polymer film laminated to the textile. In other words, the protective layer is a drapable laminate. The manufacturing therefore includes a step in which, to make the protective layer, the complex is formed by superimposing the uncoated (bare) textile with the polymer film, which is heat-pressed or glued to obtain the complex.

[0044] This polymer film may in particular comprise or consist of: polyurethane, polyester, polycarbonate, polyether, polyethylene, polypropylene, polyvinyl chloride, polyvinyl fluoride, poly(acrylate-methacrylate).

[0045] In one embodiment, as polymer film laminated to the textile, polyurethane or polyester films or polyurethane or polyester-based films are used. By polyurethane-based film is meant a film which comprises at least one polymer comprising at least one urethane function, such films may for example comprise polyurethane and at least one other constituent, for example at least one other monomer or at least one other polymer or comprise at least one urethane function and at least one other constituent, for example at least one other monomer or at least one other polymer. These polyurethane-based films are generally copolymers.

[0046] Such polyurethane-based films are in particular copolymers of polyurethane with at least one other polymer, in particular of the polyether and / or polyamide type. These copolymers are preferably block copolymers. By way of non-limiting example, mention may be made of polyurethane-block-polyether copolymers, polyurethane-block-polyamide copolymers and polyurethane-block-polyether-block-polyamide copolymers.

[0047] The polyurethane is preferably an aromatic or aliphatic, preferably aliphatic, polyether, polycarbonate or polyester-based polyurethane. Thus, the polyurethane comprises a polyol portion of the polyether, polycarbonate or polyester type and an aromatic or aliphatic (linear or branched) isocyanate portion. In a particular embodiment, the polyurethane is an aromatic polyether-based polyurethane. In another embodiment, the polyurethane is an aliphatic polyether-based polyurethane. In another embodiment, the polyurethane is an aliphatic polyester-based polyurethane.

[0048] By way of non-limiting example, the thickness of a film, for example polyurethane or polyester film, is typically of the order of a few micrometers to a few tens of micrometers, for example between approximately 3 and approximately 200 µm, in particular between 3 and 100 µm, preferably between approximately 5 and approximately 60 µm. Advantageously, the weight of these films is between approximately 3 and approximately 200 g / m 2< , preferably between approximately 5 and approximately 100 g / m 2< , more particularly between approximately 10 and approximately 60 g / m 2< . ➢ Textiles

[0049] According to one embodiment, the textile of the protective layer is a fabric obtained by weaving continuous threads. Thus, the manufacture of the protective layer includes the provision of such a fabric, or the weaving of such a fabric. The weave of the fabric is chosen to allow the TC25 and / or the overall TC mentioned to be obtained above.As armor, we can notably use canvas and satin, without being limited to them.

[0050] In this case where the textile is such a fabric, the fabric considered before treatment (coating, lamination, ink printing) is characterized by its previously mentioned coverage rate. This coverage rate corresponds to values ​​giving the fabric a sufficiently closed configuration to form a good surface condition for ink printing, not deteriorated by the application of the polymer layer on the other side of the textile. At the same time, it makes it possible to limit the polymer take-up rate or to use thin polymer films, and to obtain very flexible complexes and drapable electrical circuits.

[0051] The density can be the same in both warp and weft directions, or it can be different.

[0052] Preferably, the yarns forming the fabric are multifilament. They are formed from multiple continuous filaments. The yarns may be yarns made of organic, natural, synthetic or artificial material, in particular polyamide, in particular PA 6.6, or polyester, in particular PET, or non-conductive inorganic fibers, in particular glass (for example, E-glass or S-glass).

[0053] According to one embodiment, the fabric comprises warp threads and weft threads made of synthetic material (for example polyester or polyamide). These threads may have a count (linear mass) in dtex of between approximately 11 and approximately 800 dtex, typically between 11 and 300 dtex, in particular between approximately 22 and approximately 110 dtex, in particular between approximately 22 and approximately 78 dtex. The linear mass of the constituent filaments (DPF or decitex per filament) is in particular between 1 and 4, preferably between 1.3 and 3.5 dtex.

[0054] According to another embodiment, the fabric comprises warp threads and weft threads made of inorganic material or natural material. Inorganic material may include glass and basalt. Natural material may include threads made of bio-sourced material, for example linen or cellulose. The threads have a count (linear density) of between approximately 2 and approximately 300 tex, typically between approximately 2 and approximately 100 tex, in particular between approximately 10 and approximately 90 tex, in particular between approximately 20 and approximately 80 tex. The linear density of the constituent filaments (TPF or tex per filament) is in particular between 0.05 and 0.2.

[0055] In one embodiment, the warp yarns and the weft yarns are of the same count and the same DPF or TPF.

[0056] According to a particularly well-suited embodiment, the fabric is formed from PET yarns. The PET consists of repeating units of ethylene terephthalate; however, variants comprising a minor amount of other units, for example less than 10 mol%, in particular less than 5 mol% of other units, per molecular chain of the polyester (comonomers for forming these other units include, for example, isophthalic acid, naphthalene dicarboxylic acids, adipic acid, hydroxybenzoic acids, diethylene glycol, propylene glycol, trimellitic acid and pentaerythritol) are included within the scope of the invention.

[0057] Polyester yarns, particularly PET, are multi-filament. They are formed from multiple continuous filaments. According to one embodiment, the fabric comprises warp yarns and weft yarns which have a dtex count of between 11 and 44 dtex, for example between 11 and 33 dtex, with in particular a DPF (decitex per filament) of between 1 and 4, preferably between 1.3 and 3.5.

[0058] In one embodiment, the warp threads and the weft threads are of the same count and the same DPF.

[0059] PET yarns are multi-filament. They may have in particular one, two or all three of the following characteristics: glass transition temperature: 60 to 90°C, preferably 70 to 80°C; melting point: 240 to 270°C, preferably 250 to 260°C; breaking stress: 3 to 7 cN / dtex, preferably 6 to 7 cN / dtex. Preferably, the PET yarn has the three aforementioned characteristics.

[0060] The tenacity (or tensile strength) of PET and PA6.6 yarns is notably greater than or equal to 6 cN / dtex, in particular between 6 and 7 cN / dtex. Their elongation at break is notably greater than or equal to 20%, in particular between 20 and 30%. Tenacity and elongation at break are measured according to standard NF EN ISO 2062.

[0061] PET fibers or yarns with these characteristics are commercially available and / or can be custom produced.

[0062] The fabric may be sized or glued before being incorporated into the protective layer. This sizing or sizing of the textile may be removed, in particular by washing or heat treatment, to promote ink adhesion.

[0063] The fabric, for example desized or desized fabric, may undergo a treatment to promote the adhesion of the ink to the fabric. Ink adhesion can be improved by first applying a finishing treatment, for example to the desized or desized fabric. This treatment may be a physical treatment or a chemical treatment known as an adhesion treatment. This treatment may be, for example, a corona treatment or a plasma treatment or a chemical treatment to increase the surface energy of the textile to improve the wetting of the textile by the ink. This treatment may be, for example, a corona treatment or a plasma treatment or a chemical treatment providing functional groups capable of reacting with groups in the ink to form chemical bonds.

[0064] When the fabric is made of organic yarns, it can be advantageously heat-set. Heat-setting prevents shrinkage during ink drying. Heat-setting is carried out at 160 to 180°C for polyamide-based fabrics and at 200 to 210°C for polyester-based fabrics, with the fabrics being kept under tension in the warp and weft directions in a static or continuous process. This heat-setting also promotes consistent ink printing thanks to better hold, particularly in the roll-to-roll process.

[0065] The component of the invention may in particular have the following specifications: a total weight of between about 22 and about 1400 g / m 2< , in particular between about 22 and about 620 g / m 2< , in particular between about 22 and about 280 g / m 2< ; and / or a weight of the protective layer of between about 21 and about 700 g / m 2< , in particular between about 21 and about 320 g / m 2< , in particular between about 21 and about 130 g / m 2< .

[0066] A component with a weight and thickness in the high specification range has mechanical strengths beyond those expected, drapability, and flexibility consistent with the intended applications. Conversely, a component with a weight and thickness in the low specification range has mechanical strengths beyond those expected, drapability, and flexibility consistent with those expected for the intended applications. Durability depends on the intensity and bend angle of the mechanical fatigue stresses of the electronic component during use. For stresses of high intensity and low bend angle, a component with a weight and thickness in the high specification range will be preferred. For stresses of lesser intensity and high bend angle, a component with a weight and thickness in the low specification range will be preferred. > The ink:

[0067] The thickness of the deposited ink is between 1 and 150 µm, in particular between 2 and 50 µm, preferably between 5 and 30 µm. The ink can be applied in a single layer, or in several successively applied layers. The successive layers can be in the same material, or in different materials compatible with each other. The protective layer can be completely covered or the ink can form simple or complex geometric patterns on the protective layer.

[0068] In a particular embodiment, for a silver-based ink, with a viscosity of 13000 mPa.s, deposited by screen printing and in particular for a protective layer of TC 25 equal to 0.8, the maximum resolution in width of deposited ink, i.e. the minimum width of the tracks, can reach 1 mm, or even 0.5 mm. The maximum resolution between two tracks of deposited ink, i.e. the minimum distance between two tracks of ink, can reach 1.5 mm, or even 1 mm.

[0069] The inks may comprise a solvent-borne polymer or copolymer, for example a solvent-borne PU.

[0070] Ink is an ink that provides the desired electronic functionality. It can include conductive ink, semiconductive ink, or dielectric ink.

[0071] A conductive ink is an ink designed to conduct electricity, as is known per se. According to one embodiment, the electrical resistance is constant. According to another embodiment, the electrical resistance is piezoresistive: in this case the electrical resistance varies by application and / or variation of a mechanical stress on the protective layer, for example pressure. According to another embodiment, the electrical resistance is thermoresistive: in this case the electrical resistance varies according to the temperature of the protective layer.

[0072] Other applications known to those skilled in the art exist and may be transposed to the protective layer or the component according to the invention.

[0073] For all of these embodiments, the conductive ink may comprise conductive or electroactive particles such as organic or inorganic metal particles, for example silver particles or comprising silver and / or copper particles or comprising copper and / or carbon particles or comprising carbon. The conductive ink may also comprise conductive or electroactive organic polymers and / or conductive or electroactive organic-inorganic polymers.

[0074] In particular, conductive materials are metal nano- or micro-particles, semiconducting materials are metal oxides, organic polymers or inorganic semiconductors. Functional conductive inks are advantageously developed from metals such as copper or silver, metal oxides, conductive polymers, organometallics, graphene, carbon nanotubes.

[0075] Dielectric materials include solvent-borne polymers, thermoset polymers (thermosetting polymers) or organic polymers, which are added with ceramics in the form of microparticles and / or nanoparticles.

[0076] The functional ink makes it possible to disperse conductive, semiconductive or dielectric materials in order to facilitate their deposition on a flexible support, in particular by evaporation of solvent. It is expected that the ink is capable of passing from a state in which the ink can be printed, for example liquid, to a state where said conductive ink is fixed on the fabric, then being in a fixed state. Preferably, the ink fixed on the fabric is flexible, even elastic, and sufficiently flexible to accompany an installation or a deformation of the drapable printed electronic component.

[0077] More information on the inks can be found in Tseghai et al. Integration of Conductive Materials with Textile Structures, an Overview, 3 December 2020, Sensors 2020, 20, 6910; doi:10.3390 / s20236910 .

[0078] Ink deposition can be achieved by any means, such as projection or inkjet printing, selective spraying or spraying through a mask, or screen printing or offset technology.

[0079] The ink deposition can also be carried out by transferring the conductive ink pattern from a transfer medium to the textile, the conductive ink deposition being carried out beforehand on the transfer medium by any printing means.

[0080] Conductive ink printing on fabric is preferably done by screen printing or offset printing.

[0081] To fix the ink once printed, depending on the type of ink, we preferentially use a step of drying the ink or crosslinking or polymerization of the ink by heating or ultraviolet radiation. ➢ Second layer of protection, optional

[0082] The electronic circuit layer, formed by printing ink on the textile, can be covered by a second protective layer.

[0083] The second protective layer comprises or consists of a polymer. The polymer coating may in particular comprise or consist of: polyurethane, polyester, polycarbonate, polyether, polyethylene, polypropylene, polyvinyl alcohol, poly(vinyl acetate), poly(ethylene-vinyl acetate), poly(acrylate-methacrylate), poly(vinyl chloride), synthetic rubber, silicone, copolymers of these polymers.

[0084] The polymer used for this second protective layer may be a polymer as described in connection with the first protective layer. In one embodiment, the same polymer is used in both layers.

[0085] As in the case of the first protective layer, a polyurethane based on polyether, polyester or polycarbonate may be used, and in particular a PU resulting from the crosslinking (1) of a single-component polyurethane elastomer having a modulus at 100% elongation less than or equal to 50 MPa, in particular between 1 and 40 MPa, in particular between 1 and 35 MPa, according to standard DIN 53504, implemented in organic solvent phase, (2) by a crosslinker, at a rate of a proportion of dry crosslinker relative to the dry elastomer of between approximately 5% and approximately 100% by weight, in particular between approximately 7 and approximately 80% by weight, in particular between approximately 8 and approximately 75% by weight.

[0086] This second layer of protection can be applied, then dried and crosslinked.

[0087] The second layer of protective polymer can also consist of a film laminated to the textile, as is also described for the first layer of protection.

[0088] All the characteristics described regarding the polymer of the first protective layer are applicable to this second layer, without there being any need to repeat them here. ➢ Use

[0089] The drapable electronically functional component is intended in particular to be applied to a support or object, preferably being oriented so that the ink is on the support or object side, and the protective layer is on the opposite side, facing outwards. The support may be a material support (e.g. equipment) or a living support (e.g. human, animal, plant).

[0090] Thus, the invention also relates to a covering element comprising at least one such drapable component, which is configured to at least partially cover a support or object, for example of the type described in the preceding paragraph.

[0091] The invention also relates to an object carrying on its surface such a drapable component, said component being applied to a surface of the object with the electronic layer on the surface side.

[0092] Ink printing patterns are used to impart the desired electronic or electrical properties for a given application, as is known per se.

[0093] The electronic component of the invention can thus be used for its resistive, capacitive or inductive effects as sensors, actuators, antennas for the storage and transmission of data, electromagnetic shielding, as an optronic component, as an electrically conductive track for the use or contacting of electronic components, in particular LEDs or OLEDs, RFID or NFC chips, as electronic components in flexible photovoltaic films, as electronic components in flexible OLED applications, as an alternative system allowing energy saving.

[0094] In the case of a wired connection or secondary electronics embedded in the component, the component with drapable printed electronics advantageously comprises an integrated connector, designed to be removably connected with the wired connection or to a corresponding connector belonging to the secondary electronics, or to a wire connecting the electronics with the drapable electronic circuit, the electronic or electrical signals passing through these connectors.

[0095] The electronic component of the invention has lightness, high mechanical strength and durability and barrier properties, particularly with respect to atmospheric oxygen, humidity and the presence of water, while remaining flexible and drapable. In addition, the protective layer gives the electrical component of the invention a barrier property to electrical charges, therefore electronic or electrical insulation.

[0096] The invention will now be described in more detail using non-limiting exemplary embodiments. Methods and measures employed in the application (features of the invention and examples) :

[0097] In the examples, and for the definition of the invention, the following methods are used, while others are mentioned elsewhere in this description.

[0098] The influence of the coating on the barrier property to electrical charges was evaluated by the following method. The resistance of the printed tracks is evaluated using an ohmmeter placed in contact from one end to the other of the printed conductive ink track. The reference measurement is that in direct contact with the ink, on the front of the fabric. The component is then turned over to place the ohmmeter in indirect contact with the conductive tracks, that is to say on the back of the fabric (coated or not) at the ends of the track. The multimeter used can be a Fluke-115 or another model with the following characteristics: Maximum absolute resistance: 40MΩ Resistance measurement resolution: 100mΩ Measurement accuracy: ± 0.9% + 2 counts. For example, for 10 ohms measured, the accuracy is 0.3 ohms (0.09 + 0.2 or 0.29 ohms or 0.3 ohms).

[0099] The lower the measured electrical resistance, the higher the electrical conductivity.

[0100] The mechanical resistance to tearing was measured in the warp and weft directions in accordance with NF EN ISO 13934-1: Textiles - Tensile properties of fabrics - Part 1: Determination of maximum force and elongation at maximum force by the strip method. The tensile tests were carried out using: crosshead travel speed, set at 100 mm / min and the spacing between the two clamps is 200 mm; the pretension is 2N.

[0101] NF EN ISO 2062 - Determination of breaking force and elongation at break of individual yarns using a constant rate of elongation testing apparatus, using Method A of the standard.

[0102] Breaking force (unit centiNewton - cN): maximum force developed to break the sample during a tensile test conducted until rupture.

[0103] Elongation at break (%): increase in the length of the sample measured at break.

[0104] Tenacity (cN / tex): quotient of the breaking force expressed in cN by the linear mass of the yarn expressed in dtex (1 tex = 1 g per 1000 m of yarn length).

[0105] The test measures the strength and elongation at break of the sample, characteristic quantities of the wire.

[0106] The wire is placed between two clamps, 500 mm apart. The device (Dynamometer) then moves the clamps away from each other at a constant speed of 500 mm / min and continuously measures the applied force. The force required to break the wire is measured as well as the increase in length of the wire at break. Mean breaking force and mean elongation at break are the two data characterized by this test. Toughness is calculated from the breaking force related to the linear mass.

[0107] The modulus at 100% elongation of the single-component polyurethane elastomer is measured according to DIN 53504. The modulus is defined in 3.4 of the "Spannungswerte" standard. The measurement is carried out on dumbbell-shaped specimens (Schulterstab) of type S2, however, with a bar length IS of 55 mm and a thickness of 200 µm. The equipment used is a dynamometer. The dumbbell specimen is placed in the clamps, spaced apart by a length L 0 with the minimum possible pre-tension. The clamps are then moved apart at a constant speed of 400 mm / min and the dynamometer measures the applied force as a function of the elongation. The modulus or stress at 100% elongation in MPa is the ratio of force measured at 100% elongation to the initial cross-section of the specimen. This is described in paragraph 9.4 Spannungswerte of DIN 53504.

[0108] Porosity is, and has been, measured new and after aging in accordance with NFG 07111 or NF EN ISO 9237 - Determination of the air permeability of fabrics, the latter replacing the former, but giving identical results. The sample is mounted on a circular sample holder. A suction is initiated to create a depression of 2000 Pa which induces an air flow through the sample. The flow rate of this flow is measured and given in L / m 2 < / min.

[0109] For aging, the porosity of the fabric after hydrolysis is also measured. To do this, the fabric is placed for 4 hours in a pressure cooker with water at operating temperature and pressure. A 1-hour treatment is then applied by floating the fabric attached to a mill-type assembly (a 4-blade assembly, with the fabric attached to the end of one of the blades) in the open air at high speed.

[0110] For UV and humidity (condensation) aging, the reference standards are: ISO 11507:2007 Paints and varnishes - Exposure of coatings to artificial weathering - Exposure to radiation from UV fluorescent lamps and to water. DIN EN 12224: Geotextiles and geotextile-related products - Determination of the resistance to weathering. Example 1: Illustration of the barrier property to electric charges

[0111] This example compares the characteristics of a polyamide fabric, printed with a conductive ink on one side and coated with a polyurethane coating on the opposite side (component according to the invention), with a polyamide fabric (control) printed with a conductive ink and uncoated on the opposite side. In this example, the PU was first deposited on one side of the fabric, and cured, then the ink was deposited on the other side.

[0112] The conductive ink is Henkel Electrodag-725A silver ink. Five parallel tracks of 250 mm length and 1 mm width were screen printed on both fabrics, the control and the component according to the invention. The pitch or interline distance is 3 mm. The thickness of the conductive ink deposit is 12 µm. The theoretical value of the ohmic resistance of the conductive ink for these dimensions is 0.015*(250 / 25 / 12) = 7.8 Ohms.

[0113] The control is a PA6.6 fabric with a thickness of approximately 70 µm. The tenacity of the PA6.6 yarn is 6.6 cN / dtex. The elongation at break is 26%.

[0114] In the component according to the invention, the same PA6.6 fabric has a protective layer by polyurethane coating obtained from a PU elastomer having a 100% elongation modulus of 2 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker relative to the dry elastomer is 8.4%. The polyurethane is used in a 50 / 50 mixture of toluene and isopropanol.

[0115] PU is a single-component PU based on aliphatic polycarbonate. Coating is carried out using a doctor blade and is followed by drying at 100°C, then crosslinking at 180°C. [Table 1] Witness Component according to the invention, example 1 Nature of the thread PA6.6 PA6.6 Title (dtex) 33 33 DPF (dtex) 2,5 2,5 Diameter of a filament (µm) 19 19 Number of warp threads x weft threads (number / cm) 44 × 45 44 × 45 TC 25 0,8 0,8 PU coating weight (g / m2) 0 5,9 PU modulus at 100% elongation (MPa) N / A 2 % crosslinker (dry weight) N / A 8,4 Weight of the protective layer (g / m 2 < ) 33,0 38,7 Mechanical resistance to chain tearing (daN) 3,0 3,7 Mechanical resistance to weft tearing (daN) 2,3 4,2 Porosity in new air (L / m2 / min) under 2000 Pa > 200 3 Air porosity after aging (L / m2 / min) under 2000 Pa > 200 48 Average electrical resistance of the five tracks in direct contact (front of the fabric) (printing side) (Ohm) 16,1± 0,1 8,4± 0,2 Average electrical resistance of the five tracks in indirect contact (back of the fabric) (unprinted side) (Ohm) 16,8± 0,2 no signal detected

[0116] The average resistance measurement carried out on the coated face of the coated fabric is zero, demonstrating the insulating and protective nature of the coating. In addition, the resistance value on the printed face is lower for the coated fabric according to the invention compared to the uncoated control fabric. It is therefore observed that the coating provides a barrier property to charges. Without wishing to be bound by theory, it is also believed that the protective layer, probably by improving the dimensional stability of the fabric and the strength of the protective layer, improves the quality of the deposition of the conductive ink during printing and improves the conductivity of the tracks.

[0117] It is also noted that the component according to the invention has a mechanical resistance to tearing greater than 2.5 daN, therefore 25 kg.ms -2<, mechanical resistance consistent with or even greater than for the applications envisaged. Example 2:Illustration of the barrier property to electric charges

[0118] Example 2 compares the characteristics of a glass fabric printed with a conductive ink on one side and coated with a polyurethane coating on the opposite side (component according to the invention) with a glass fabric printed with a conductive ink and uncoated on the opposite side (control). In this example, the ink was deposited first on the fabric.

[0119] The conductive ink deposited in both cases is an ink with a resistivity of 150 mOhm / sq / 25µm (mΩ / □ / 25µm). The tracks are parallel lines of length 70 mm and pitch 2.54 mm, the thickness of printed ink is 100 µm. The inter-track distance is 3 mm. The number of printed lines is twelve.

[0120] The witness is a glass fabric with a thickness of approximately 128 µm.

[0121] The component according to the invention comprises the same glass fabric as the control. It also receives a protective layer by polyurethane coating obtained from a PU elastomer having a 100% elongation modulus of 2 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker relative to the dry elastomer is 8.4%. The polyurethane is implemented in a 50 / 50 mixture of toluene and isopropanol. The PU is a single-component PU based on aliphatic polycarbonate. The coating is carried out using a doctor blade and is followed by air drying and then crosslinking at 180 °C. [Table 2] Witness Component of the invention, Example 2 Nature of the thread Glass Glass Thread title (tex) 68 68 TPF (tex) 0,17 0,17 Diameter of a filament (µm) 9 9 Number of warp threads x weft threads (number / cm) 11,8 × 11,5 11,8 × 11,5 TC 25 0,82 0,82 Coating weight on the opposite side (g / m2) 0 28 PU modulus at 100% elongation (MPa) N / A 2 % crosslinker (dry weight) N / A 8,4 Total weight (g / m2) 121 149 Average electrical resistance of the twelve tracks in direct contact (front of the fabric) (printing side) (Ohm) 1,8± 0,2 1,8± 0,2 Average electrical resistance of the twelve tracks in indirect contact (back of the fabric) (unprinted side) (Ohm) 2,1± 0,2 no signal detected

[0122] The measurement carried out on the coated side of the coated fabric is zero, demonstrating the insulating and protective nature of the coating. It is therefore demonstrated that the coating provides a barrier property to charges.

[0123] Examples 3 & 4: Illustration of the properties of lightness, high mechanical resistance, high durability and barrier properties, particularly with regard to oxygen in the air, humidity and the presence of water.

[0124] These examples compare the characteristics of polyamide fabrics covered with a polyurethane coating according to the invention compared to an uncoated polyamide fabric.

[0125] The control is a PA6.6 fabric with a thickness of approximately 70 µm. The tenacity of the PA6.6 yarn is 6.6 cN / dtex. The elongation at break is 26%.

[0126] In Example 3, the same PA6.6 fabric is combined with a polyurethane coating protection layer obtained from a PU elastomer having a 100% elongation modulus of 2 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker to dry elastomer is 8.4%. The polyurethane is used in a 50 / 50 mixture of toluene and isopropanol.

[0127] In Example 4, the same PA6.6 fabric is combined with a polyurethane coating protection layer obtained from a PU elastomer having a 100% elongation modulus of 32.4 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker to dry elastomer is 79.4%. The polyurethane is used in a 50 / 50 mixture of toluene and isopropanol.

[0128] In Examples 3 and 4, the PU is a single-component PU based on aliphatic polycarbonate. Coating is carried out using a doctor blade and is followed by drying at 100°C, then crosslinking at 180°C. [Table 3] Witness Example 3 Example 4 Nature of the thread PA6.6 PA6.6 PA6.6 Title (dtex) 33 33 33 DPF (dtex) 2,5 2,5 2,5 Diameter of a filament (µm) 19 19 19 Number of warp threads x weft threads (number / cm) 44 × 45 44 × 45 44 × 45 TC 25 0,79 0,79 0,79 Coating weight (g / m2) 0 5,9 6,5 PU modulus at 100% elongation (MPa) N / A 2 32,4 % crosslinker (dry weight) N / A 8,4 79,4 Total weight (g / m2) 33,0 38,7 38,9 Mechanical resistance to tearing in warp direction (daN) 3,0 3,7 2,9 Mechanical resistance to tearing in the weft direction (daN) 2,3 4,2 2,7 Porosity in new air (L / m2 / min) under 2000 Pa > 200 3 4 Air porosity after aging (L / m2 / min) under 2000 Pa > 200 48 52

[0129] It is found that the components of examples 3 and 4 according to the invention have mechanical resistance to tearing greater than 2.5 daN, therefore 25 kg.ms -2<, mechanical resistance consistent or even superior for the applications envisaged.

[0130] It is found that the components of examples 3 and 4 according to the invention have air and oxygen barrier properties, when new and after aging, of less than 150 L / m 2 < / min, porosity to air and oxygen compliant for the applications envisaged.

[0131] Examples 5 & 6: Illustration of the properties of lightness, high mechanical resistance, high durability and barrier properties, particularly with regard to oxygen in the air, humidity and the presence of water.

[0132] These examples compare the characteristics of printed polyester fabrics coated with a polyurethane coating according to the invention compared to an uncoated polyester fabric.

[0133] The control is a PET fabric with a thickness of approximately 70 µm. The tenacity of the PET yarn is 6.8 cN / dtex. The elongation at break is 24.6%.

[0134] In Example 5, the same PET fabric is combined with a polyurethane coating protection layer obtained from a PU elastomer having a 100% elongation modulus of 2 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker to dry elastomer is 8.4%. The polyurethane is used in a 50 / 50 mixture of toluene and isopropanol.

[0135] In Example 6, the same PET fabric is combined with a polyurethane coating protection layer obtained from a PU elastomer having a 100% elongation modulus of 2 MPa and isocyanate + melamine formaldehyde crosslinker. The proportion of dry crosslinker to dry elastomer is 22.5%. The polyurethane is used in a 50 / 50 mixture of toluene and isopropanol.

[0136] In Examples 5 and 6, the PU is a single-component PU based on aliphatic polycarbonate. The coating is carried out using a doctor blade and is followed by drying at 100°C and then crosslinking at 180°C. [Table 4] Witness Example 5 Example 6 Nature of the thread PET PET PET Yarn title (dtex) 33 33 44 DPF (dtex) 2,1 2,1 1,8 Diameter of a filament (µm) 16 16 16 Number of warp threads x weft threads (number / cm) 44 × 44,5 44 × 44,5 39 × 38,5 TC 25 0,79 0,79 0,82 Coating weight on the opposite side (g / m2) 0 8 14 PU modulus at 100% elongation (MPa) N / A 2 2 % crosslinker (dry weight) N / A 8,4 22,5 Total weight (g / m2) 31,0 39,6 50,7 Mechanical resistance to tearing in warp direction (daN) 3,2 2,8 2,5 Mechanical resistance to tearing in the weft direction (daN) 2,7 2,6 1,8 Porosity in new air (L / m2 / min) under 2000 Pa > 200 1 1 Air porosity after aging (L / m2 / min) under 2000 Pa > 200 4 2

[0137] It is found that the components of examples 5 and 6 according to the invention have mechanical resistance to tearing greater than 1.5 daN, therefore 15 kg.ms -2<, mechanical resistance consistent or even superior for the applications envisaged.

[0138] It is found that the components of examples 5 and 6 according to the invention have air and oxygen barrier properties, when new and after aging, well below 150 L / m2 / min, porosity to air and oxygen suitable for the applications envisaged.

[0139] Example 7: Evaluation of the aging of screen-printed specimens - Influence of conductive ink on mechanical performance and influence of the coating on ink conductivity: A PA6.6 fabric and a PU coating in accordance with Example 1 according to the invention were used. Conductive ink specimens were screen-printed to obtain rectangles of 200 × 50 mm.

[0140] The specimens were then fixed on a metal plate, the PU-coated side exposed to aging and the side printed with conductive ink in contact and therefore protected by the metal plate. The fixing was carried out using waterproof and airtight adhesive tape. The specimens thus prepared were exposed in a climatic chamber for 40 hours to alternating cycles of 4 hours of UV exposure and exposure to condensation, under the following conditions: 4 hours of UV exposure: UVA (340nm), 60°C and 20% relative humidity (RH) and 4 hours of exposure to condensation: 40°C and 100% RH.

[0141] The warp and weft direction tensile tests were carried out according to standard NF EN ISO 13934-1 as described above and the electrical resistance measurements were made according to the method described above. These measurements were carried out on the following samples: 4 specimens of coated fabric, noted T e 4 specimens of coated fabric with conductive ink printing, noted T ei 4 specimens of coated fabric with conductive ink printing and after aging, noted T eiv 4 specimens of uncoated fabric, noted T ne 4 specimens of uncoated fabric with conductive ink printing, noted T nei 4 specimens of uncoated fabric with conductive ink printing and after aging, noted T neiv

[0142] The results are reported in the table below: You Tei Teiv Average Standard deviation Average Standard deviation Average Standard deviation Ink thickness (µm) N / A N / A 14 0 14 0 Mechanical resistance to tearing in warp direction (daN) 4,0 0,1 4,5 0,1 4,3 0,2 Mechanical resistance to tearing in the weft direction (daN) 4,5 0,1 4,4 0,0 4,8 0,1 Average electrical resistance of specimens in direct contact (front of fabric) (printing side) (Ohm) N / A N / A 0,65 0,20 0,60 0,25 T ne Tnei T neiv Average Standard deviation Average Standard deviation Average Standard deviation Ink thickness (µm) N / A N / A 17 2 17 2 Mechanical resistance to tearing in warp direction (daN) 3,9 0,1 ND ND 3,6 0,5 Mechanical resistance to tearing in the weft direction (daN) 3,6 0,2 ND ND 4,3 0,1 Average electrical resistance of specimens in direct contact (front of fabric) (printing side) (Ohm) N / A N / A 2,02 0,54 1,83 0,58 NA: not applicable; ND: not determined

[0143] Thus, the results obtained make it possible to highlight that: The warp and weft mechanical resistances are not influenced by the conductive ink printing. Aging does not influence the mechanical performance of the textile. These tests confirm the values ​​presented in Example 1, namely that the PU coating improves the mechanical resistance of the fabric. Aging does not modify the thickness of the samples. Better conductivity is observed in the presence of the coating and its stability after aging.

Claims

1. A drapable electronic component, comprising: • an electronic layer formed by printing ink, and • a protective layer characterized in that: • the protective layer forms a complex which comprises a fabric and a protective polymer layer coating one side of the fabric • the electronic layer is deposited on the fabric, on the side of the fabric opposite the deposition side of the protective polymer layer • the fabric is obtained by weaving continuous yarns and is characterized by a cover factor CF25 higher than or equal to 0.5, typically of 0.5 to 3, in particular between 0.6 and 2.5, more particularly between 0.7 and 2, for example between 0.7 and 1.5, CF25 being calculated as follows: CF25 = [(number of filaments / cm × diameter of 1 filament in cm)warp + (number of filaments / cm × diameter of 1 filament in cm)weft] × 25 / thickness of said fabric in µm.

2. The component according to claim 1, characterized in that the fabric has a thickness of between 25 and 500 µm, in particular between 25 and 300 µm, more particularly between 25 and 150 µm, further particularly between 25 and 50 µm.

3. The component according to claim 1 or 2, characterized in that the fabric has an areal density of between 20 and 450 g / m2, in particular between 20 and 250 g / m2, in particular between 20 and 100 g / m2.

4. The component according to any of the preceding claims, characterized in that if the fabric is produced with synthetic yarns, the number of warp and weft yarns per centimetre is between 10 and 50 yarns / cm, and if the fabric is produced with inorganic or natural yarns, the number of warp and weft yarns per centimetre is between 6 and 30, in particular between 10 and 25 yarns / cm.

5. The component according to claim 4, characterized in that the synthetic yarns, in particular in polyamide or in polyester, have a linear density of between about 11 and about 800 dtex, in particular between about 22 and about 110 dtex, more particularly between about 22 and about 78 dtex, and a linear density of the constituent filaments (DPF or decitex per filament) of between 1 and 4, preferably between 1.3 and 3.5 dtex.

6. The component according to claim 4, characterized in that the yarns in inorganic material, in particular glass and basalt, or in natural material in particular cellulose or flax, have a linear density of between about 2 and about 300 tex, in particular between about 10 and about 90 tex, more particularly between about 20 and about 80 tex, and the linear density of the constituent filaments (TPF or tex per filament) is between 0.05 and 0.2.

7. The component according to any of the preceding claims, characterized in that the dry take-up rate of the protective polymer is between 5 and 50 %, preferably between 5 and 30 % by weight, better still between 10 and 30 %, the dry take-up rate being the ratio by weight of the dry protective polymer on the fabric.

8. The component according to any of the preceding claims, characterized in that the protective polymer is in the form of a coating which coats or impregnates the fabric, and preferably comprises or is composed of: polyurethane, polyester, polycarbonate, polyether, polyethylene, polypropylene, polyvinyl alcohol, polyvinyl acetate, polyethylene vinyl acetate, poly(acrylate-methacrylate), polyvinyl chloride, synthetic rubber, silicone, copolymers of these polymers.

9. The component according to the preceding claim, characterized in that the protective polymer is a polyether-, polyester- or polycarbonate-based polyurethane.

10. The component according to the preceding claim, characterized in that the polyurethane is derived from crosslinking (1) a one component polyurethane elastomer having a modulus at 100 % elongation lower than or equal to 50 MPa, in particular between 1 and 40 MPa, in particular between 1 and 35 MPa, according to standard DIN 53504, performed in solvent phase (2) by a crosslinker, in a proportion of dry crosslinker relative to the dry elastomer of between about 5 % and about 100 % by weight, in particular between about 7 and about 80 % by weight, more particularly between about 8 and about 75 % by weight.

11. The component according to claim 8, characterized in that the polymer is composed of a film laminated on the fabric, and preferably comprises or is composed of: polyurethane, polyester, polycarbonate, polyether, polyethylene, polypropylene, polyvinyl chloride, polyvinyl fluoride, poly(acrylate-methacrylate).

12. The component according to any of the preceding claims, characterized in that the fabric is a fabric obtained by weaving continuous PET yarns.

13. The component according to any of the preceding claims, characterized in that it has a total weight of between about 22 and about 1400 g / m2, in particular between about 22 and about 620 g / m2, more particularly between about 22 and about 280 g / m2.

14. The component according to any of the preceding claims, characterized in that the ink is a conductive, semiconductor or dielectric ink.

15. The component according to any of the preceding claims, characterized in that the electronic circuit layer is coated with a second protective polymer layer.

16. A covering element comprising a drapable electronic component according to any of the preceding claims, said covering element being configured to cover a substrate or object at least in part.

17. An object having on its surface a drapable electronic component according to any of claims 1 to 15 applied onto a surface of the object with the electronic layer on the surface side.

18. Use of a drapable electronic component according to any of claims 1 to 15, as layer having resistive, capacitive or inductive effects, as sensor, actuator, antenna for data storage and transmission, for electromagnetic shielding, as optronic component, as electrically conductive track for the use or contacting of electronic components, in particular LED or OLED, RFID or NFC chips, as electronic component in flexible photovoltaic films, as electronic component in flexible OLED applications.