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EP1558449B1 - Procede de production de caracteristiques d'identification infalsifiables - Google Patents

Procede de production de caracteristiques d'identification infalsifiables Download PDF

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Publication number
EP1558449B1
EP1558449B1 EP03784094.9A EP03784094A EP1558449B1 EP 1558449 B1 EP1558449 B1 EP 1558449B1 EP 03784094 A EP03784094 A EP 03784094A EP 1558449 B1 EP1558449 B1 EP 1558449B1
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EP
European Patent Office
Prior art keywords
layer
printing
optically transparent
spacer layer
metallic clusters
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.)
Expired - Lifetime
Application number
EP03784094.9A
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German (de)
English (en)
Other versions
EP1558449A1 (fr
Inventor
Friedrich Kastner
Martin Bergsmann
Harald Walter
Georg Bauer
Ralph Domnick
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Hueck Folien GmbH
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Hueck Folien GmbH
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Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B42D2033/10—
    • B42D2033/18—
    • B42D2033/30—

Definitions

  • the invention relates to a method for producing tamper-proof identification features, which have a color shift effect, caused by metallic clusters, which are separated by a defined transparent layer of a mirror layer.
  • WO 02/18155 a method for the counterfeit-proof marking of objects is known, wherein the article is applied with a mark consisting of an electromagnetic wave reflecting first layer on an electromagnetic wave transmissive inert layer having a defined thickness, whereupon said inert layer formed of metallic clusters third layer follows, is provided.
  • WO 01/53113 describes optically variable security elements which have an angle-dependent color shift effect, wherein the structure consists essentially of a reflector layer, a dielectric layer and an absorber layer.
  • WO 02/051646 A describes a decorative film which is constructed as a layer composite and has a transparent base film, a transparent cover layer and a transparent dielectric transparent layer arranged therebetween. Between the dielectric layer and the cover layer at least partially a metal layer is arranged.
  • the object of the invention is to provide a method for producing forgery-proof identification features on flexible materials, wherein the security against counterfeiting is given by a visible color change at different viewing angles (tilting effect), which should also be machine-readable. In the machine-read spectrum, the manufacturing process should be clearly coded.
  • the invention therefore provides a method for producing tamper-resistant identification features consisting of at least each an electromagnetic wave reflecting layer (2), an optically transparent spacer layer (3) and a layer formed by metallic clusters (4).
  • Suitable carrier substrates are preferably flexible plastic films, for example of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC ,
  • the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 8 to 200 .mu.m, more preferably 12 to 50 .mu.m.
  • metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 ⁇ m, preferably 10 to 80 ⁇ m, particularly preferably 20-50 ⁇ m, may also serve as the carrier substrate.
  • the films can also be surface-treated, coated or laminated, for example with plastics, or painted.
  • carrier substrates pulp-free or cellulose-containing paper, heat-activatable paper or composites with paper, for example composites with plastics having a basis weight of 20-500 g / m 2 , preferably 40-200 g / m 2 , may be used.
  • An electromagnetic wave reflecting layer is applied to the carrier substrate.
  • This layer may preferably be made of metals such as aluminum, gold, chromium, silver, copper, tin, platinum, nickel and their alloys, for example nickel / chromium, copper / aluminum and the like exist.
  • the electromagnetic wave reflecting layer may be applied all over or partially by known methods such as spraying, vapor deposition, sputtering, printing (gravure, flexographic, screen, digital printing), painting, roller coating and the like.
  • a method using a soluble paint for producing the partial metallization is particularly suitable.
  • a solvent-soluble paint application is applied to the carrier substrate, in a second step this layer optionally treated by means of an in-line plasma, corona or flame process and in a third step, a layer of the metal to be structured or
  • the paint application by means of a solvent, optionally combined with a mechanical action is removed.
  • the soluble application of paint can be carried out over the entire surface or partially, the application of the metal or the metal alloy takes place over the entire surface or partially.
  • the application of the paint can be done by any method, for example by gravure printing, flexographic printing, screen printing, digital printing and the like.
  • the paint or varnish used is soluble in a solvent, preferably water, but it is also possible to use a paint which is soluble in any solvent, for example in alcohol, esters and the like.
  • the paint or lacquer may be conventional compositions based on natural or artificial macromolecules.
  • the soluble color may be pigmented or unpigmented.
  • pigments all known pigments can be used. Particularly suitable are TiO 2 , ZnS, kaolin and the like.
  • the printed carrier substrate is optionally treated by means of an in-line plasma (low pressure or atmospheric plasma), corona or flame process.
  • High-energy plasma for example Ar or Ar / O 2 plasma, cleans the surface of toning residues of the printing inks.
  • the surface is activated.
  • terminal polar groups are generated on the surface. This improves the adhesion of metals and the like to the surface.
  • a thin metal or metal oxide layer can be applied as adhesion promoter, for example by sputtering or vapor deposition.
  • adhesion promoter particularly suitable are Cr, Al, Ag, Ti, Cu, TiO 2 , Si oxides or chromium oxides.
  • This adhesion promoter layer generally has a thickness of 0.1 nm-5 nm, preferably 0.2 nm-2 nm, particularly preferably 0.2 nm to 1 nm.
  • a partial electromagnetic wave reflecting layer can also be produced by a conventionally known etching method.
  • the thickness of the electromagnetic wave reflecting layer is preferably about 10 - 50 nm, but also higher or lower layer thicknesses are possible. If metal foils are used as the carrier substrate, the carrier substrate itself may already form the electromagnetic wave reflecting layer. The reflection of this layer for electromagnetic waves, in particular as a function of the thickness of the layer or the metal foil used, is preferably 10 -100%.
  • the following polymeric layer or layers can also be applied over the entire surface or partially.
  • the polymeric layers consist for example of paint or paint systems based on nitrocellulose, epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate or urethane systems.
  • This polymeric layer essentially serves as a transparent spacer layer but, depending on the composition, may be absorbent in a particular spectral range.
  • this absorbing property can also be enhanced by the addition of a suitable chromophore.
  • a suitable spectral range can be selected.
  • the polymeric layer can additionally be made machine-readable.
  • a yellow AZO dye for example anilides; Rodural, Eosin, are used. The dye also changes the spectrum of the label in a characteristic manner.
  • this polymeric layer may show wetting effects, which leads to a characteristic macroscopic lateral structuring.
  • This structuring can be modified, for example, by modification of the surface energy of the layers, for example by plasma treatment, corona treatment, electron beam, ion beam treatment or by laser modification.
  • the polymeric layer has a defined thickness, preferably 10 nm to 3 ⁇ m, more preferably 100-1000 nm. If a plurality of polymeric layers are applied, they can each have different thicknesses.
  • the polymeric layer is applied by brushing, painting, casting, spraying, printing (screen, gravure, or digital printing) or roller coating.
  • the polymeric layer is applied in a process that allows the application of very homogeneous layer thicknesses over large areas. A homogeneous layer thickness is therefore necessary to ensure a uniform color appearance in the finished product.
  • the tolerances are not more than ⁇ 5%, preferably ⁇ ⁇ 2%.
  • Particularly suitable is a printing process, wherein the color or paint is applied from a temperature-controlled paint pan via a plunger cylinder and a transfer roller on the printing cylinder, wherein only the wells of the printing cylinder are filled with the paint or the paint substantially.
  • a squeegee excess paint or varnish is stripped off and optionally further dried by means of a blow bar.
  • the metallic clusters may consist, for example, of aluminum, gold, palladium, platinum, chromium, silver, copper, nickel and the like or their alloys, such as, for example, Au / Pd or Cr / Ni.
  • This cluster layer is deposited by sputtering (for example ion beam or magnetron) or evaporation (electron beam) from a solution or by adsorption.
  • the growth of the clusters and thus their shape and the optical properties can advantageously be influenced by adjusting the surface energy or the roughness of the underlying layer. This characteristically changes the spectra. This can be done for example by thermal treatment in the coating process or by preheating the substrate.
  • the shape and thus also the optical properties of the clusters can be influenced by adjusting the surface energy or the condensation coefficient of the metal on the underlying layer. These parameters can be achieved, for example, by treatment of the surface with oxidizing liquids, for example with Na hypochlorite or in a PVD or CVD process.
  • the cluster layer is preferably applied by sputtering.
  • the properties of the layer in particular the density and the structure, are set above all by the power density, the amount of gas used and its composition, the temperature of the substrate and the web speed.
  • the clusters When applied from the solution by wet-chemical methods, the clusters are prepared in solution in a first step, then the clusters are derivatized, concentrated and applied directly to the polymeric surface.
  • an inert polymer for example PVA, polymethyl methacrylate, nitrocellulose, polyester or urethane systems are admixed.
  • the mixture can then be subsequently a printing process, such as screen, flexo or preferably gravure printing methods are applied to the polymeric layer.
  • the thickness of the cluster layer is preferably 2 to 20 nm, particularly preferably 3 to 10 nm.
  • a protective layer can be applied by means of vacuum technology or printing technology.
  • the polymer layer is specifically structured by modifying the surface energy. Due to the color effect, the structures then appear very rich in contrast due to the subsequently applied cluster layer, making them easily recognizable to the eye. Therefore, such structuring creates an additional tamper-proof feature.
  • this structuring can be transformed by fingerprint algorithms into one-to-one codes, which are then machine-readable.
  • a structuring can be assigned to a defined numerical value, whereby markings having the same manufacturing parameters, ie having the same color effect, can be individualized.
  • the individual layer combinations can also be applied to separate substrates.
  • the electromagnetic wave reflecting layer and the polymeric spacer layer may be applied to a first substrate, which may for example be applied to a value document or incorporated into this value document.
  • the cluster layer can then be applied to a further substrate, which is optionally provided with an adhesive layer. By joining the two coated substrates then appears according to the key / lock principle, the characteristic color effect.
  • the carrier substrate may also already have one or more functional and / or decorative layers.
  • color or lacquer layers a wide variety of compositions can be used in each case.
  • the composition of the individual layers may in particular vary according to their purpose, depending on whether the individual layers serve exclusively decorative purposes or should be a functional layer or whether the layer should be both a decorative and a functional layer.
  • the layers to be printed may be pigmented or unpigmented.
  • pigments it is possible to use all known pigments, for example titanium dioxide, zinc sulfide, kaolin, ATO, FTO, ITO, aluminum, chromium oxides and silicon oxides, as well as colored pigments.
  • solvent-based coating systems and systems without solvents can be used.
  • Suitable binders are various natural or synthetic binders.
  • the functional layers may for example have certain electrical, magnetic, special chemical, physical and also optical properties.
  • Electrode properties such as conductivity, for example, graphite, carbon black, conductive organic or inorganic polymers.
  • Metal pigments for example, copper, aluminum, silver, gold, iron, chromium lead and the like
  • metal alloys such as copper-zinc or copper-aluminum or their sulfides or oxides, or amorphous or crystalline ceramic pigments such as ITO and the like may be added.
  • doped or non-doped semiconductors such as, for example, silicon, germanium or ion conductors such as amorphous or crystalline metal oxides or metal sulfides can also be used as an additive.
  • to adjust the electrical properties of the layer polar or partially polar Compounds such as surfactants or non-polar compounds such as silicone additives or hygroscopic or non-hygroscopic salts are used or added.
  • paramagnetic, diamagnetic and also ferromagnetic substances such as iron, nickel and cobalt or their compounds or salts (for example oxides or sulfides) can be used.
  • the optical properties of the layer can be visualized by visible dyes or pigments, luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV range or in the IR range, effect pigments, such as liquid crystals, pearlescent, bronzes and / or heat-sensitive Influence colors or pigments. These can be used in all possible combinations.
  • phosphorescent pigments can also be used alone or in combination with other dyes and / or pigments.
  • Various properties can also be combined by adding various additives mentioned above.
  • colored and / or conductive magnetic pigments All mentioned conductive additives can be used.
  • conductive additives can be used.
  • dyeing of magnetic pigments it is possible to use all known soluble and non-soluble dyes or pigments.
  • a brown magnetic ink can be adjusted to metallic, for example silvery, by adding metals in their color shade.
  • insulator layers can be applied.
  • insulators for example, organic substances and their derivatives and compounds, such as paint and coating systems, such as epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate, Urethane systems that can be radiation-curing, for example, by heat or UV radiation suitable.
  • the thickness of the functional layer is 0.001 to 50 ⁇ m, preferably 0.1 to 20 ⁇ m.
  • multilayer structures can be produced which have different properties in the layers applied one above the other.
  • different properties of the individual layers for example layers having different conductivity, magnetizability, optical properties, absorption behavior and the like, it is possible to produce structures for security elements with several precise authenticity features, for example.
  • the layers can be present on the substrate over the entire surface or partially already, or can be applied.
  • the process steps can be repeated as often as desired, wherein, for example, in full-surface application of a functional layer of the paint can be omitted if necessary.
  • the coated film produced in this way can also be protected by a protective lacquer layer or further refined, for example, by laminating or the like.
  • the product can be applied with a sealable adhesive, such as a hot or cold seal adhesive to the appropriate substrate, or embedded in paper for security papers by conventional methods, for example.
  • a sealable adhesive such as a hot or cold seal adhesive
  • sealants can be equipped with visible or visible in UV light, fluorescent, phosphorescent or laser and IR radiation absorbing features to increase the security against counterfeiting. These features may also be present in the form of patterns or characters or show color effects, in principle any number of colors, preferably 1 to 10 colors or color mixtures, are possible.
  • the carrier substrate may be removed after application or remain on the product in one-sided coating.
  • the carrier film may optionally be specially equipped on the uncoated side, for example, scratch-resistant, antistatic and the like. The same applies to a possible lacquer layer on the carrier substrate.
  • the layer structure can be set in a transferable or non-transferable manner, if appropriate with a transfer lacquer layer, which may optionally have a diffraction structure, for example a hologram structure.
  • the structure according to the invention can also be applied inversely to the carrier material, with a layer formed of metallic clusters, which are produced by means of a vacuum-technical method, on a carrier substrate is prepared from solvent-based systems and then one or more partial and / or full-surface polymeric layers of defined thickness are applied and then a partial or full-surface electromagnetic wave reflecting layer is applied to the spacer layer.
  • the first layer (2) can also be a layer formed of metallic clusters, which is based on a carrier (1) is applied.
  • the carrier (1) can be the carrier substrate to be marked.
  • the inert spacer layer is designated by (3).
  • the metallic clusters (4) are expediently made, for example, from copper.
  • Fig. 3 to 5 is provided for further processing of the counterfeit-proof marked carrier substrate adhesive or lamination with (6). The change in the reflected light which produces the characteristic color spectrum in comparison with the incident light is visualized in an arrow in these two figures by means of the gray scale profile.
  • a made of metallic clusters third layer (4) is applied.
  • the second layer (3) is applied to a mirror layer (2).
  • the mirror layer is applied to a carrier substrate (1).
  • the third layer (4) formed of metallic clusters is applied first, then the second layer (3), then the mirror layer (2) and finally the adhesive or lamination layer (6).
  • marks is only the optically transparent formed second layer (3) on the electromagnetically reflecting first layer (2) and this applied to a carrier substrate (1).
  • the marking is initially not visible.
  • the markings are only visible when they are brought into contact with a substrate (5) on the surface of which the third layer (4) formed of metallic clusters is applied. This in turn produces a color effect that can be observed through the substrate (5).
  • the carrier substrate (5) is expediently made of a transparent material, for example of plastic such as polyethylene terephthalate polycarbonate, polyurethane, polyethylene, polypropylene, polyacrylate, polyvinyl chloride, polyepoxide.
  • coated support materials produced according to the invention can be used as security features in data carriers, value documents, labels, labels, seals, in packaging, textiles and the like.
  • the sol (almost pH neutral, hardly any salt) is rebuffered by adding 5 ml of 1 M sodium carbonate solution (pH 9.6). Only sufficiently protected clusters remain in solution and do not precipitate.
  • the sol can be concentrated by centrifugation or binds directly after application to the nitrocellulose coated surface. With a suitable choice of Nitrocellulose layer thickness develop after drying of the excess water strong surface dyeings.
  • the sol after concentration, is added by a factor of 10 small amounts (e.g., 5%) of a neutral polymer (e.g., PVA).
  • PVA neutral polymer
  • the colloids are dry randomly oriented with the polymer in a very thin layer. There are observed as in Example 1c) characteristic colors.
  • a Cu layer with a thickness of 4 nm is sputtered onto a web-shaped carrier substrate, which is already provided with a mirror layer and a nitrocellulose layer as a transparent spacer layer.
  • the sputtering is carried out by means of a magnetron plasma source with a power of 20 W / cm 2 at 25 ° C using Ar with a partial pressure of 5 x 10 -3 mbar as a process gas.
  • the speed of the web is 0.5m / s.
  • the Cu layer shows pronounced island growth.
  • the islands with a mean diameter of a few nm correspond to the clusters in the wet-chemical process. Significantly different characteristic color spectra are observed.

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  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Laminated Bodies (AREA)
  • Credit Cards Or The Like (AREA)
  • Physical Vapour Deposition (AREA)
  • Printing Methods (AREA)

Claims (11)

  1. Procédé servant à fabriquer des caractéristiques d'identification infalsifiables constituées respectivement d'au moins une couche (2) réfléchissant des ondes électromagnétiques, d'une couche d'espacement (3) réalisée de manière optiquement transparente et d'une couche formée de clusters (4) métalliques, sachant qu'est appliquée, sur un substrat de support (1), en partie ou sur toute la surface, une couche (2) réfléchissant des ondes électromagnétiques, que la couche d'espacement (3) inerte réalisée de manière optiquement transparente est appliquée, en partie ou sur toute la surface, sur ladite couche réfléchissant des ondes électromagnétiques et qu'une couche formée à partir de clusters (4) métalliques est appliquée sur ladite couche d'espacement réalisée de manière optiquement transparente, caractérisé en ce que la couche formée à partir de clusters (4) métalliques est appliquée au moyen d'un procédé relevant d'une technique sous vide par pulvérisation ou par évaporation ou à partir de systèmes à base de solvants au moyen d'un procédé par voie chimique humide ou relevant d'une technique d'impression, et en ce que la couche d'espacement (3) optiquement transparente est formée à partir d'au moins une couche polymère présentant une épaisseur définie, qui est appliquée par étalement, par mise en peinture, par coulage, par injection, par impression, par exemple par un procédé de sérigraphie, par un procédé d'héliogravure, par un procédé d'impression par flexographie ou par un procédé d'impression numérique ou par un procédé d'application au rouleau, sachant qu'on obtient une épaisseur homogène de couche présentant une tolérance de ± 5 %.
  2. Procédé servant à fabriquer des caractéristiques d'identification infalsifiables constituées respectivement d'au moins une couche (2) réfléchissant des ondes électromagnétiques, d'une couche d'espacement (3) inerte réalisée de manière optiquement transparente et d'une couche formée de clusters (4) métalliques, sachant qu'est appliquée sur un substrat de support (1), une couche formée à partir de clusters (4) métalliques, que la couche d'espacement (3) inerte réalisée de manière optiquement transparente est appliquée, en partie ou sur toute la surface, sur ladite couche formée à partir de clusters métalliques et que la couche (2) réfléchissant des ondes électromagnétiques est appliquée, en partie ou sur toute la surface, sur ladite couche d'espacement (3) inerte réalisée de manière optiquement transparente, caractérisé en ce que la couche formée à partir de clusters (4) métalliques est appliquée au moyen d'un procédé relevant d'une technique sous vide par pulvérisation ou par évaporation ou à partir de systèmes à base de solvants au moyen d'un procédé par voie chimique humide ou relevant d'une technique d'impression, et en ce que la couche d'espacement (3) optiquement transparente est formée à partir au moins d'une couche polymère présentant une épaisseur définie, qui est appliquée par étalement, par mise en peinture, par coulage, par injection, par impression, par exemple par un procédé de sérigraphie, par un procédé d'héliogravure, par un procédé d'impression par flexographie ou par un procédé d'impression numérique ou par un procédé d'application au rouleau, sachant qu'on obtient une épaisseur homogène de couche présentant une tolérance de ± 5 %.
  3. Procédé servant à fabriquer des caractéristiques d'identification infalsifiables constituées respectivement d'au moins une couche (2) réfléchissant des ondes électromagnétiques, d'une couche d'espacement (3) inerte réalisée de manière optiquement transparente et d'une couche formée de clusters (4) métalliques, sachant qu'une couche (2) réfléchissant des ondes électromagnétiques est appliquée sur un premier substrat de support (1), qu'une couche d'espacement (3) inerte réalisée de manière optiquement transparente est appliquée sur ladite couche (2) réfléchissant des ondes électromagnétiques et qu'une couche formée à partir de clusters métalliques est appliquée sur un deuxième substrat de support (5) transparent, caractérisé en ce que l'assemblage des deux substrats de support enduits de la sorte de telle manière que la couche formée à partir de clusters (4) métalliques est reliée à la couche d'espacement (3) permet seulement de créer la caractéristique d'identification infalsifiable, du moins permet de la mettre en évidence, et en ce que la couche constituée de clusters (4) métalliques est appliquée au moyen d'un procédé relevant d'une technique sous vide par pulvérisation ou par évaporation ou à partir de systèmes à base de solvants au moyen d'un procédé par voie chimique humide ou relevant d'une technique d'impression, et en ce que la couche d'espacement (3) optiquement transparente est formée à partir d'au moins une couche polymère présentant une épaisseur définie, qui est appliquée par étalement, par mise en peinture, par coulage, par injection, par impression, par exemple par un procédé de sérigraphie, par un procédé d'héliogravure, par un procédé d'impression par flexographie ou par un procédé d'impression numérique ou par un procédé d'application au rouleau, sachant qu'on obtient une épaisseur homogène de couche présentant une tolérance de ± 5 %.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une couche de protection est appliquée sur la couche formée à partir de clusters (4) métalliques.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la couche (2) réfléchissant des ondes électromagnétiques ou la couche formée à partir de clusters (4) métalliques, sur laquelle est appliquée la couche d'espacement (3) inerte réalisée de manière optiquement transparente, constituée d'au moins une couche polymère présentant une épaisseur définie, sont modifiées par traitement à l'aide de liquides oxydants ou par un procédé de dépôt physique en phase vapeur PVD ou par un procédé de dépôt chimique en phase vapeur CVD.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la couche d'espacement (3) inerte réalisée de manière optiquement transparente, constituée d'au moins une couche polymère présentant une épaisseur définie est structurée par des effets de démouillage.
  7. Procédé selon la revendication 6, caractérisé en ce que les structures de démouillage de la couche d'espacement (3) structurée réalisée de manière optiquement transparente constituée d'au moins une couche polymère présentant une épaisseur définie sont converties en codes biunivoques au moyen d'algorithmes d'empreintes digitales.
  8. Procédé selon l'une quelconque des revendications 6 ou 7, caractérisé en ce que la couche d'espacement (3) réalisée de manière optiquement transparente constituée d'au moins une couche polymère présentant une épaisseur définie est modifiée par traitement à l'hypochlorite de sodium, par un procédé de dépôt physique en phase vapeur PVD ou par un procédé de dépôt chimique en phase vapeur CVD.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la couche d'espacement (3) polymère réalisée de manière optiquement transparente constituée d'au moins une couche polymère présentant une épaisseur définie contient un chromophore.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que d'autres couches fonctionnelles et/ou décoratives sont appliquées sur le ou les substrats de support (1, 5).
  11. Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le ou les substrats de support sont pourvus d'une laque de thermoscellage (6).
EP03784094.9A 2002-08-06 2003-07-28 Procede de production de caracteristiques d'identification infalsifiables Expired - Lifetime EP1558449B1 (fr)

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AT0119102A AT413360B (de) 2002-08-06 2002-08-06 Verfahren zur herstellung von fälschungssicheren identifikationsmerkmalen
AT11912002 2002-08-06
PCT/EP2003/008327 WO2004014663A1 (fr) 2002-08-06 2003-07-28 Procede de production de caracteristiques d'identification infalsifiables

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AU2003253348A8 (en) 2004-02-25
CA2494961C (fr) 2012-06-26
ATA11912002A (de) 2005-07-15
AT413360B (de) 2006-02-15
EP1558449A1 (fr) 2005-08-03
HUE027104T2 (en) 2016-08-29
CA2494961A1 (fr) 2004-02-19
ES2564043T3 (es) 2016-03-17
RU2005106243A (ru) 2005-08-27
AU2003253348A1 (en) 2004-02-25
WO2004014663A1 (fr) 2004-02-19
US8067056B2 (en) 2011-11-29
RU2297918C2 (ru) 2007-04-27

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