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EP1716007B1 - Marque de securite infalsifiable a couleur variable selon l orientation - Google Patents

Marque de securite infalsifiable a couleur variable selon l orientation Download PDF

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Publication number
EP1716007B1
EP1716007B1 EP05715300A EP05715300A EP1716007B1 EP 1716007 B1 EP1716007 B1 EP 1716007B1 EP 05715300 A EP05715300 A EP 05715300A EP 05715300 A EP05715300 A EP 05715300A EP 1716007 B1 EP1716007 B1 EP 1716007B1
Authority
EP
European Patent Office
Prior art keywords
layer
security feature
feature according
forgery
spacer layer
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
EP05715300A
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German (de)
English (en)
Other versions
EP1716007A1 (fr
Inventor
Martin Bergsmann
Friedrich Kastner
Jürgen Keplinger
Georg Bauer
Harald Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hueck Folien GmbH
Original Assignee
Hueck Folien GmbH
Identiv GmbH
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Filing date
Publication date
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Application filed by Hueck Folien GmbH, Identiv GmbH filed Critical Hueck Folien GmbH
Publication of EP1716007A1 publication Critical patent/EP1716007A1/fr
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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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • 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
    • 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
    • B42D25/324—Reliefs
    • 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
    • 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
    • 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
    • B42D2033/10—
    • B42D2035/24—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Definitions

  • the invention relates to tamper-proof security features that have a color shift effect, caused by metallic clusters, which are separated by a defined transparent layer of a mirror layer.
  • the object of the invention is to provide a security feature with a color shift effect, the security feature should have additional security levels.
  • the invention therefore provides a tamper-proof security feature consisting of at least one electromagnetic wave reflecting layer, a polymeric spacer layer and a layer formed by metallic clusters, characterized in that one or more of the layers in addition to their function in the color shift setup fluorescent and / or meet electrically conductive and / or magnetic and / or forensic measurable safety functions.
  • 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.
  • the foils can be clear or matt (especially matt printed).
  • the Streuurig of matte films causes a significant change in particular the intensity in the color spectrum, so that a different color code than in clear films.
  • 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 also pulp-free or cellulose-containing paper, thermally activated paper, or composites with paper, for example composites with plastics having a basis weight of 20 - 500 g / m 2 , preferably 40 - used 200 g / m 2 .
  • the carrier substrate can also be provided with a release-capable transfer lacquer layer.
  • an electromagnetic wave reflecting layer is applied on the carrier substrate.
  • This layer may preferably be made of metals such as aluminum, gold, chromium, silver, copper, tin, platinum, nickel or tantalum, of semiconductors such as silicon, and their alloys, for example nickel / chromium, copper / aluminum and the like or a Printing ink with metal pigments exist.
  • the electromagnetic wave reflecting layer is wholly or partially by known methods, such as spraying, vapor deposition, sputtering, or for example as a printing ink by known printing (gravure, flexo, screen, digital printing), by painting, roller application method, slot nozzle (slot). Eye), roll dip coating or curtain coating method 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 is optionally treated by means of an in-line plasma, corona or flame process and applied in a third step, a layer of the metal or metal alloy to be structured, whereupon in a fourth step, the paint application by means of a solvent, optionally combined with a mechanical action, Will get removed.
  • the soluble paint is applied partially, the application of the metal or the metal alloy takes place over the entire surface or partially.
  • the 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 is preferably 10-100%.
  • the following polymeric spacer layer or the polymeric spacer layers can also be applied over the whole area or preferably partially.
  • the polymeric layers consist for example of conventional or radiation-curing, in particular UV-curing, paint or coating systems based on nitrocellulose, epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate , Urethane or PS copolymer systems.
  • This polymeric layer essentially serves as a transparent spacer layer, but may be absorbent and / or fluorescent or phosphorescent depending on the composition in a specific spectral range.
  • this property can also by admixing a suitable chromophors are amplified.
  • 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, can be used. The dye also changes the spectrum of the label in a characteristic manner.
  • a switchable chromophore such as e.g. Bacteriofiodopsin Use.
  • a suitable wavelength e.g. Bacteriorhodopsin between 450 mm and 650, mm
  • Chromphore change their absorption behavior.
  • bacteriorhodopsin a structural transformation occurs which, after switching off the illumination, returns to the initial state and switches the color of the chromophore between purple and yellow.
  • the integration of such chromophores into the layer structure, e.g., the spacer layer alters the absorption spectrum, with switching behavior also occurring.
  • This polymeric layer can, depending on the quality of the adhesion on the carrier web or an optionally underlying layer Dewetting effects show what leads to a characteristic, macroscopic lateral structuring.
  • This structuring can be induced or selectively modified, for example, by modification of the surface energy of the layers, for example by plasma treatment (in particular plasma functionalization), corona treatment, electron beam, ion beam treatment or laser modification. Furthermore, it is possible to apply a Haftvertnittler für with partially different surface energy.
  • the polymeric spacer layer has regions of different thickness.
  • the thickness gradient, defined steps, defined structures
  • a combination of different color-shift effects is produced in a finished security feature (multicolor tilt effect).
  • the thickness of the layer can be selectively varied within a wide range, for example in a range of 10 nm to 3 microns.
  • the layer structure results in no recognizable to the human eye color, but depending on the mirror material a slightly darker metallic impression compared to the pure mirror. This is because the spectrum becomes more and more complex with increasing layer thickness (multipeak) and can no longer be resolved. For readers, however, the spectrum is still easy to measure and even highly characteristic, with the maximum distance layer thickness to be measured depending on the resolution of the respective device. This provides a way to create a nondescript but machine-readable mark.
  • a certain defined layer thickness profile can also be embodied in the form of a step structure, wherein different thicknesses of a further polymer layer are partially applied to a base layer.
  • at least one layer of the polymeric spacer layer can be made of a piezoelectric polymer, in which case electrical properties can be detected either by direct contact or by an electric field.
  • a characteristic interaction with electrical or electromagnetic fields can also be detected by simple optical detection (eg with the naked eye, optical photometer and / or spectrometer).
  • At least one layer of the polymeric spacer layer may have optically active structures, such as diffraction gratings, diffraction patterns, holograms, and the like, which may be embossed into the polymeric spacer layer, preferably prior to complete cure.
  • optically active structures such as diffraction gratings, diffraction patterns, holograms, and the like, which may be embossed into the polymeric spacer layer, preferably prior to complete cure.
  • a corresponding method is for example off EP-A-1352732 A or off EP-A 1310381 known.
  • the polymeric spacer layer is applied by means of a printing process, for example by gravure printing.
  • the fine structure in the spacer layer transmitted by the printing cylinder or the printing plate then forms an additional counterfeit-proof feature.
  • this fine structure forms a forensic and / or visible security feature which permits unambiguous assignment to the production process (fingerprint).
  • several different layer thicknesses of the polymeric spacer layer can be made with a single cylinder. The different thicknesses result in different codes.
  • Another thickness range of the polymeric spacer layer is then made with another cylinder, with some codes possibly overlapping. In the overlapping area, the same code can be produced with two different cylinders, which results in a further forensic and / or visible security feature and allows unambiguous assignment to the production process (fingerprint).
  • the additional fingerprint is used according to the invention either as a forensic feature (3rd level feature) or as an additional code substructure.
  • polymeric spacer layers are also used which exhibit cholesteric behavior.
  • they also exhibit polymers with two intrinsic chiral phases, such as e.g. Nitrocellulose.
  • an additional characteristic security feature is generated by wavelength-selective polarization.
  • the cholesteric behavior can lead to a characteristic change in the color spectrum, which can be detected by a reader.
  • the metallic clusters can consist, for example, of aluminum, gold, palladium, platinum, chromium, silver, copper, nickel, tantalum, tin and the like or their alloys, such as, for example, Au / Pd, Cu / Ni or Cr / Ni.
  • Cluster materials are applied, for example, semiconducting elements of III. to VI. Main or the II.
  • Subgroup whose plasmon excitation externally (eg via X-ray or ion radiation or electromagnetic interactions) can be triggered. As a result, a change in the color spectrum (eg intensity change) or a blinking of the color shift effect becomes visible when viewed with a suitable reading device.
  • the cluster layer may also have additional properties, for example, electrically conductive, magnetic or fluorescent properties according to the invention.
  • additional properties for example, electrically conductive, magnetic or fluorescent properties according to the invention.
  • a cluster layer of Ni, Cr / Ni, Fe or core-shell structures with these materials or mixtures of these materials with the cluster materials mentioned above has such additional features.
  • core-shell structures can also be produced fluorescent clusters, for example using Quantum Dots ® from Quantum Dot Corp.
  • the cluster layer is applied over its entire surface or partially, either exactly or partially congruent or offset to the full-surface or partial electromagnetic wave reflecting layer.
  • the adhesion of the metallic cluster layer to the polymeric spacer layer defined by the leadership of the application process of the cluster layer can be adjusted, so that with different adhesive strength tamper evidence by destruction of the color effect arises.
  • the paint of the spacer layer can be adjusted so that it shows good adhesion to the metal (cluster, mirror) but not to the base film. If this varnish is printed over a partial Cu layer, the mirror layer is separated according to the structuring of the cluster layer upon detachment of the element. This creates a previously completely invisible proof of tampering.
  • This cluster layer may be formed by sputtering (e.g., ion beam or magnetron) or evaporation (electron beam), or from a solution of e.g. be applied 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. Furthermore, these parameters can be selectively changed, 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 may preferably be 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.
  • an inert polymer for example PVA, polymethyl methacrylate, nitrocellulose, polyester or urethane systems
  • the mixture can then subsequently be applied to the polymeric layer by means of a printing process, for example screen, flexo or preferably gravure printing processes, by means of a coating process, for example painting, spraying, roll application techniques and the like.
  • the mass thickness of the cluster layer is preferably 2 to 20 nm, more preferably 3 to 10 nm.
  • a so-called double cluster structure can be applied to the carrier substrate, wherein a cluster layer is present on both sides of the spacer layer.
  • a preferably black layer is applied under the first cluster layer.
  • This black background can be applied either by means of a vacuum technique, for example as an unstoichiometric alumina, or else as a printing ink by means of a suitable printing process, which ink may have additional functional features, for example magnetic, electrically conductive features and the like.
  • ink may have additional functional features, for example magnetic, electrically conductive features and the like.
  • a black foil By placing a black foil on a double-pattern setup, a simple optical detection can be performed on site (simple test equipment).
  • a dual cluster feature may be incorporated as a viewing window in a bill or credit card or the like.
  • the optical detection of the presence of the double-cluster feature is achieved by applying a black film, for example made of polycarbonate.
  • the clusters on both sides of the spacer layer can be applied with different thicknesses, in each case be structured or full-surface area and / or consist of a structure of different materials. If, for example, a polymeric spacer layer with a defined layer thickness profile or a step structure is used, the metallic clusters are deposited preferentially and directionally at the steps or at certain points of the layer thickness profile. This process can be enhanced or reduced by appropriate process management. For example, other optical effects are produced on microstructured surfaces than on smooth films. This results in new (sub) codes.
  • an optionally structured spacer layer can be applied to a reflection layer applied over the entire area, and then an optionally structured spacer layer, again a preferably partial cluster layer, for example partially overlapping it with the first cluster layer.
  • Such sequences of spacer layer and cluster layer may conveniently be repeated 2 to 3 times. Analogous to such a structure can be applied to a partially applied reflection layer, in turn, also different color shift effects are observed here, depending on the design of the partial reflection layer.
  • the layer structure produced in this way can then be structured by means of electromagnetic radiation (eg light).
  • electromagnetic radiation eg light
  • both lettering, letters, symbols, characters, images, logos, codes, serial numbers and the like can be introduced, for example by means of laser irradiation or engraving.
  • the radiation power either the layer structure partially destroyed or changed the thickness of the polymeric spacer layer.
  • the polymeric spacer layer usually swells in these areas, producing a change in color (peak shift to longer wavelengths).
  • the partial destruction causes the illuminated location to either reflect metallically (separation of the electromagnetic wave reflecting layer from the spacer layer) or to make the material behind the mirror visible.
  • a targeted structuring with colored, reflective or colorless areas can be achieved.
  • the lighting performance can also be chosen so that only the color effect is changed, with partial areas with defined different colors arise (multi-color tilt effect).
  • Essential for the change is the energy actually absorbed by the layer structure.
  • a cluster layer directly to a carrier substrate which is transparent at least partially in the visible spectral region.
  • a spacer layer and a further cluster layer are then applied to this cluster layer as described, with a black layer then optionally being applied to this cluster layer , as already described, can be applied.
  • a so-called inverse layer structure is obtained.
  • an inverse setup with a single cluster layer (application of the cluster layer on the carrier substrate, subsequent application of the polymeric spacer layer and the electromagnetic wave reflecting layer) can also be produced, the properties of the individual layers corresponding to the preceding description.
  • the carrier substrate may also already have one or more functional and / or decorative layers.
  • the functional layers may for example have certain electrical, magnetic, special chemical, physical and also optical properties.
  • Electrode for example, copper, aluminum, silver, gold, iron, chromium, lead and the like
  • metal alloys such as copper-zinc or Copper-aluminum or its sulfides or oxides, or amorphous or crystalline ceramic pigments such as ITO and the like
  • doped or non-doped semiconductors such as, for example, silicon, germanium or ionic conductors, such as amorphous or crystalline metal oxides or metal sulfides, as an additive.
  • polar or partially polar compounds such as surfactants or nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts can be used or added to adjust the electrical properties of the layer.
  • 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, for example, paint and varnish systems, e.g. Epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate, urethane systems which may be radiation-curable, for example by heat or UV radiation.
  • paint and varnish systems e.g. Epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate, urethane systems which may be radiation-curable, for example by heat or UV radiation.
  • forensic features can be incorporated into one of the layers to permit on-site (possibly destructing of the feature) testing in the laboratory or with appropriate test equipment, e.g. DNA in NC lacquer, antigens in acrylate lacquer systems.
  • DNA may be adsorbed or bound to the clusters.
  • isotopes can be added to the clusters or in the mirror material or be present in the spacer layer (for example, Elemental Tag of the company KeyMaster Technologies Inc.).
  • a deuterated polymer e.g., PS-d
  • a low radioactive mirror material as a mirror.
  • the thickness of the functional layer is 0.001 to 50 ⁇ m, preferably 0.1 to 20 ⁇ m.
  • 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, or a self-adhesive coating on the appropriate substrate or, for example, in papermaking for security papers by conventional methods embedded in the paper.
  • a sealable adhesive such as a hot or cold seal adhesive
  • a self-adhesive coating on the appropriate substrate or, for example, in papermaking for security papers by conventional methods embedded in the paper.
  • 1 is the optically transparent carrier substrate
  • 2 is the electromagnetic wave reflecting first layer
  • 3 is the polymeric spacer layer
  • 4 is the layer constructed of metallic clusters
  • 5 is an adhesive or lamination layer
  • 6 is a protective layer 7 a transfer lacquer layer, 8 black layer, 10 the beam path of the incident and reflected light.
  • Fig. 7 is a personalized personalized by electromagnetic radiation structure.
  • coated support materials produced according to the invention can be used as security features in bills, data carriers, value documents, labels, labels, seals, in packaging, textiles and the like.
  • a Cr cluster layer of thickness 3 nm is applied in a sputtering process.
  • a urethane lacquer is applied to this cluster layer in gravure printing with a specially optimized printing cylinder as a polymeric spacer layer in a thickness of 0.5 ⁇ m.
  • This is followed again by the deposition of a Cr cluster layer of thickness 3 nm.
  • a black-colored film is laminated onto this cluster layer. A color shift effect from violet to gold is observed.
  • parts of the layers are structured in such a way that the tilting color becomes visible with a suppressed moiré pattern only when precisely overlapping structured double cluster setup and structured black background film.
  • the polymer layer is structured in a checkerboard-like manner in the double cluster setup, the edge length of the checkerboard fields being smaller than 0.1 mm.
  • the blackening of the background film is structured with analogue checkerboard fields. If the structured foils are superimposed correctly, both the appearance of the moiré pattern and the tilting color can be observed. Thus, the highest level of safety can be ensured by simple on-site testing.
  • Clusters prepared by chemical synthesis in solution and applied as a dispersion in solution. For this purpose, such cluster-containing solutions are printed in very thin layers, or adsorbed from the solution. If clusters are used which additionally have additional properties, additional security can be generated.
  • powdered cluster materials for printing silver nanopowders from Argonide can be used.
  • magnetic cluster materials magnetic pigments from Sustech can be used. Most suitable are ferrofluids or pigments in powder form of the type: FMA (superparamagnetic ferrite) with hydrophilic coating.
  • FMA mean primary particle size: 10 nm in diameter.
  • SSPH Simential Solutiort Phase Hydrolysis particles from Nanodynamics or Nanopowders
  • Au on SnO 2 or Au on SiO 2 particles having an inner diameter of 20 nm and an outer diameter of 40 nm can be used.
  • the particles used by Quantum Dot Corporation can be used as fluorescent particles: as Core Marterial CdS and as Shell Material ZnS. Core diameter: 5nm; Shell diameter: 2.5 nm.
  • a printing cylinder having different well volumes in different areas is made across its width.
  • the spacer layer is printed with this cylinder.
  • the spacer layer is printed with this cylinder.
  • a security strip is cut out of the web so that a sharp code transition comes to lie exactly in the middle of the strip.
  • the strip thus produced then contains as an additional security level two machine-readable codes that are detected individually or together with the reader.
  • All described layer constructions can be structured in a targeted manner by means of suitable lasers.
  • an inverse layer structure at the lasered areas was partially destroyed by means of a 1064 nm powerline laser from Rofin Sinar. The power was adjusted so that the laser causes a detachment of the polymeric spacer layer from the AlurniniumLitetik, whereby the lasered areas no longer appear colored, but show the metallic luster of the mirror layer. The maceration took place selectively.
  • the illustrated image is thus composed of a dot matrix of metallically reflecting areas in the colored area. In this way, very fast ( ⁇ 1 sec) individualized, tamper-proof markings, e.g. for ID cards.
  • marker substances which are only accessible to a forensic detection.
  • a mark of 1 per thousand of solid DNA be added to the paint volume.
  • the DNA adsorbs under normal conditions (25 ° C, 80% humidity) firmly to the nitrocellulose and is so firmly anchored in the paint matrix.
  • the DNA can be extracted in the laboratory and detected by molecular biological methods. If suitable DNA sequences are used, these can also be detected on site, for example by means of a suitable hybridization assay.

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  • Toxicology (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Materials For Medical Uses (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (32)

  1. Marque de sécurité infalsifiable constituée respectivement d'au moins une couche réfléchissant des ondes électromagnétiques, une couche d'écartement polymère et une couche formée de clusters métalliques, caractérisée en ce qu'une ou plusieurs des couches remplissent en plus de leur fonction, des fonctions de sécurité mesurables du point de vue fluorescent et/ou électroconducteur et/ou magnétique et/ou médico-légal dans la configuration à couleur variable selon l'orientation.
  2. Marque de sécurité infalsifiable selon la revendication 1, caractérisée en ce que la couche réfléchissant des ondes électromagnétiques et/ou la couche cluster sont des couches partielles.
  3. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 ou 2, caractérisée en ce que la couche d'écartement polymère présente un profil d'épaisseur de couche défini et une structure en gradins.
  4. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la couche d'écartement polymère se compose de plusieurs couches, qui peuvent présenter respectivement différentes épaisseurs de couche ou différents profils d'épaisseur de couche.
  5. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la couche d'écartement polymère se compose de plusieurs couches partielles et/ou complètes avec différents indices de réfraction.
  6. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la couche d'écartement polymère est appliquée sous forme de signes, de motifs, de lignes, de formes géométriques et similaires.
  7. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'au moins une couche de la couche d'écartement polymère ou la couche de recouvrement se compose d'un polymère à propriétés piézoélectriques.
  8. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'au moins une couche de la couche d'écartement polymère présente une ou plusieurs structures efficaces du point de vue optique.
  9. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le substrat support présente une couche de vernis de transfert.
  10. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la couche se compose de clusters métalliques de différents métaux.
  11. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 10, caractérisée en ce que la structure de la couche est individualisée sous l'effet d'ondes électromagnétiques.
  12. Marque de sécurité infalsifiable selon la revendication 11, caractérisée en ce que la structure est individualisée par traitement laser.
  13. Marque de sécurité infalsifiable selon l'une quelconque des revendications 11 ou 12, caractérisée en ce qu'une structuration ultérieure a lieu sous l'effet d'ondes électromagnétiques.
  14. Marque de sécurité infalsifiable selon la revendication 13, caractérisée en ce que des images, des logos, des inscriptions, des codes, des signes et similaires sont produits par la structuration.
  15. Marque de sécurité infalsifiable selon la revendication 14, caractérisée en ce que des zones d'une autre couleur ou incolores sont obtenues par la structuration.
  16. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 15, caractérisée en ce que la structure fine de l'outil d'impression peut être identifiée comme marque clairement attribuable dans la couche d'écartement.
  17. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 16, caractérisée en ce que la marque de sécurité est appliquée sur un substrat ou est insérée dans un substrat, le substrat présentant le cas échéant un évidement qui est recouvert par la marque de sécurité.
  18. Marque de sécurité infalsifiable selon l'une quelconque des revendications 1 à 17, caractérisée en ce que l'agencement de plusieurs successions de couches d'écartement et de couches clusters de structure différente le cas échéant sur une couche réflectrice complète ou partielle génère différents effets de couleurs changeant selon l'orientation.
  19. Film constitué d'un substrat support et respectivement d'au moins une couche réfléchissant des ondes électromagnétiques, une couche d'écartement polymère et une couche formée de clusters métalliques, caractérisé en ce qu'une ou plusieurs des couches remplissent en plus de leur fonction, des fonctions de sécurité mesurables du point de vue fluorescent et/ou électroconducteur et/ou magnétique dans la configuration à couleur variable selon l'orientation, convenant à la fabrication d'une marque d'identification infalsifiable selon l'une quelconque des revendications 1 à 18.
  20. Film selon la revendication 19, caractérisé en ce qu'il est doté d'un ou des deux côtés, complètement ou en partie d'une couche de vernis de protection.
  21. Film selon la revendication 20, caractérisé en ce que la couche de vernis de protection est pigmentée.
  22. Film selon l'une quelconque des revendications 20 à 21, caractérisé en ce qu'il est pourvu d'un ou des deux côtés, complètement ou en partie d'une colle aux propriétés de scellement, par exemple d'une colle thermosoudable à chaud ou à froid ou d'un revêtement auto-adhésif.
  23. Film selon la revendication 22, caractérisé en ce que le revêtement de colle est pigmenté.
  24. Procédé de fabrication d'une marque de sécurité selon l'une quelconque des revendications 1 à 18, caractérisé en ce que sont appliquées sur un substrat support une couche partielle ou complète réfléchissant des ondes électromagnétiques, puis une ou plusieurs couches polymères partielles et/ou complètes d'une épaisseur définie au moyen d'un cylindre d'impression, qui présente une structure fine unique, sur quoi, une couche formée de clusters métalliques,
    qui sont formés au moyen d'un procédé sous vide ou à partir de systèmes à base de solvant, est appliquée sur la couche d'écartement.
  25. Procédé selon la revendication 24, caractérisé en ce que sont appliquées sur un substrat support une couche formée de clusters métalliques, qui sont formés au moyen d'un procédé sous vide ou à partir de systèmes à base de solvant, puis une ou plusieurs couches polymères partielles et/ou complètes d'une épaisseur définie variant le cas échéant au moyen d'un cylindre d'impression, qui a une structure fine unique, sur quoi, une couche partielle ou complète réfléchissant des ondes électromagnétiques et sur celle-ci une autre couche cluster sont ensuite appliquées.
  26. Procédé selon l'une quelconque des revendications 24 ou 25, caractérisé en ce qu'une couche de fond noir est appliquée en plus.
  27. Procédé selon l'une quelconque des revendications 24 à 26, caractérisé en ce que la couche d'écartement polymère et/ou la couche de fond est structurée.
  28. Procédé selon l'une quelconque des revendications 24 à 27, caractérisé en ce que la structuration de la couche d'écartement polymère ou de la couche de fond se fait par traitement laser.
  29. Utilisation des marques de sécurité selon l'une quelconque des revendications 1 à 18 ou des films selon l'une quelconque des revendications 19 à 23 le cas échéant après confection dans des billets de banque, des supports de données, des documents de valeur, des emballages, des labels, des étiquettes, des sceaux et similaires.
  30. Procédé de contrôle d'une marque de sécurité selon l'une quelconque des revendications 1 à 18, caractérisé en ce que les différentes marques d'identification sont détectées et identifiées sous différents angles d'observation adaptés avec des appareils d'évaluation adéquats tels par exemple des spectromètres, des colorimètres.
  31. Procédé de contrôle d'une marque de sécurité selon l'une quelconque des revendications 1 à 18, caractérisé en ce que les marques d'identification sont détectées et identifiées visuellement.
  32. Procédé de contrôle de marques de sécurité selon l'une quelconque des revendications 1 à 18,
    caractérisé en ce que les marques médico-légales comme l'ADN, les isotopes ou la structure fine sont identifiées avec des moyens de contrôle adaptés en laboratoire ou sur place.
EP05715300A 2004-02-16 2005-02-11 Marque de securite infalsifiable a couleur variable selon l orientation Expired - Lifetime EP1716007B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0023604A AT504587A1 (de) 2004-02-16 2004-02-16 Fälschungssicheres sicherheitsmerkmal mit farbkippeffekt
PCT/EP2005/001385 WO2005077668A1 (fr) 2004-02-16 2005-02-11 Marque de securite infalsifiable a couleur variable selon l'orientation

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EP1716007A1 EP1716007A1 (fr) 2006-11-02
EP1716007B1 true EP1716007B1 (fr) 2008-07-09

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EP (1) EP1716007B1 (fr)
AT (2) AT504587A1 (fr)
CA (1) CA2555821C (fr)
DE (1) DE502005004629D1 (fr)
ES (1) ES2308450T3 (fr)
RU (1) RU2377134C2 (fr)
UA (1) UA91012C2 (fr)
WO (1) WO2005077668A1 (fr)

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EP2420391A2 (fr) 2010-07-19 2012-02-22 Hueck Folien Ges.m.b.H. Elément de sécurité doté d'une couche optiquement variable
EP2851194A1 (fr) 2013-09-20 2015-03-25 Hueck Folien Ges.m.b.H Elément de sécurité, notamment étiquette de sécurité
EP2960068A1 (fr) 2014-06-23 2015-12-30 Hueck Folien Ges.m.b.H Élément de sécurité à effet de bascule colorée modifié
WO2016192828A1 (fr) 2015-05-29 2016-12-08 Hueck Folien Ges.M.B.H. Élément de sécurité à effet de variation des couleurs
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EP2420391A2 (fr) 2010-07-19 2012-02-22 Hueck Folien Ges.m.b.H. Elément de sécurité doté d'une couche optiquement variable
EP2851194A1 (fr) 2013-09-20 2015-03-25 Hueck Folien Ges.m.b.H Elément de sécurité, notamment étiquette de sécurité
WO2015039711A1 (fr) 2013-09-20 2015-03-26 Hueck Folien Ges.M.B.H. Élément de sécurité, notmament étiquette de sécurité
EP3140127B1 (fr) 2014-05-07 2020-02-12 OVD Kinegram AG Élément multicouche et procédé pour le fabriquer
EP2960068A1 (fr) 2014-06-23 2015-12-30 Hueck Folien Ges.m.b.H Élément de sécurité à effet de bascule colorée modifié
WO2016192828A1 (fr) 2015-05-29 2016-12-08 Hueck Folien Ges.M.B.H. Élément de sécurité à effet de variation des couleurs
DE102017007524B3 (de) * 2017-08-10 2019-01-24 Giesecke+Devrient Mobile Security Gmbh Kartenförmiger Datenträger und Verfahren zum Herstellen eines kartenförmigen Datenträgers

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CA2555821A1 (fr) 2005-08-25
ATE400449T1 (de) 2008-07-15
EP1716007A1 (fr) 2006-11-02
DE502005004629D1 (de) 2008-08-21
UA91012C2 (ru) 2010-06-25
WO2005077668A1 (fr) 2005-08-25
ES2308450T3 (es) 2008-12-01
RU2006133334A (ru) 2008-04-10
US20110291401A1 (en) 2011-12-01
RU2377134C2 (ru) 2009-12-27
CA2555821C (fr) 2012-11-27
AT504587A1 (de) 2008-06-15
US8678442B2 (en) 2014-03-25
US20070110965A1 (en) 2007-05-17

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