EP2393668B1 - Signe de sécurité pour document et méthode pour le fabriquer - Google Patents

Signe de sécurité pour document et méthode pour le fabriquer Download PDF

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Publication number
EP2393668B1
EP2393668B1 EP10704330.9A EP10704330A EP2393668B1 EP 2393668 B1 EP2393668 B1 EP 2393668B1 EP 10704330 A EP10704330 A EP 10704330A EP 2393668 B1 EP2393668 B1 EP 2393668B1
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EP
European Patent Office
Prior art keywords
coat layer
security feature
layer
structuring
material 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.)
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Application number
EP10704330.9A
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German (de)
English (en)
Other versions
EP2393668A1 (fr
Inventor
Hans-Peter Seijo Bollin
André LEOPOLD
Detlef Märtens
Jeffry Gahlbeck
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B42D25/378—Special inks
    • 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
    • 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
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B42D25/44—Marking by removal of material using mechanical means, e.g. engraving
    • 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
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • 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

Definitions

  • the invention relates to a method for producing a visually perceptible without technical aids security feature, a visually without technical aids visually perceptible security feature, a method for producing a document with such a security feature and a document with such a security feature.
  • Value or security documents often consist of a plastic body, which is produced by means of joining, in particular by means of lamination, from a plurality of plastic layers. Such value or security documents have a long service life and are better protected against simple paper-based documents due to the more complex manufacturing techniques.
  • security features are integrated in the document body or subsequently applied to it. In this case, it is particularly preferred if the security feature is located in the same position as the personalized or individualized data, since in case of manipulation or exchange of the personalized or individualized data, the security feature is damaged or destroyed and thus the manipulation is obvious.
  • Personal data is understood here and below to mean personal data, for example name or date of birth of a document holder, and individualized data document-specific data, for example a serial number.
  • security features are often used which have a view dependent on the perspective. Such security features are difficult and not adjustable with commercially available copying systems. It is important here that with simple consideration of the value or security document, an untrained observer can determine the presence and authenticity of the security feature even without technical aids. For this purpose, for example, optically variable colors are used. However, these are only available in a limited number of variations and, in particular, can only be used to a limited extent for securing via personalized or individualized data. Therefore, diffraction patterns are often introduced or replaced in value or security documents the personalization of document blanks subsequently applied to this.
  • the advantage of holographic security features is the introduction of complex information, for example a complex representation, such as coats of arms or logos.
  • a spatial, diffractive optical effective structure is known, which is produced by a provided with a reflection-enhancing coating surface of a paint or polymer layer.
  • the thickness of such a security element is only about 3 to 10 microns in total.
  • reflection-enhancing coatings metals, but also dielectric layers, for example TiO 2 , can be used.
  • the dielectric layers must have a refractive index which is sufficiently different from the lacquer in order to have a reflection-enhancing effect.
  • Disadvantage of such a security element is that structures which are effective diffraction optical, must be made with a precision below the order of the wavelength, which is why correspondingly precise and complex procedures must be used for the step of generating the spatial, diffractive optical effective layer.
  • suitable illumination from a specific orientation is necessary for viewing diffraction-optically effective structures, which makes the security feature more difficult to verify than, for example, an optically variable color.
  • lens structures are often used to achieve tilt image effects.
  • a laser-described tilting image is known.
  • the advantage of such structures is the extremely simple verification, which does not require any special lighting conditions for the reconstruction.
  • the lens structure and introduced information spatially must be very closely matched, so that manipulation is extremely difficult.
  • embossing lacquer is known, which is suitable for the production of micro-optical devices as a security element in value documents.
  • the embossing lacquer according to the invention has at least one organic compound which has at least one polarizable element, so that the refractive index is greater than 1.5.
  • the refractive index of the embossing lacquer may be increased by the addition of nanoparticles.
  • the embossing lacquer is used for the production of security elements, which are equipped in security features in the form of microstructures. Disadvantage of the micro-optical security elements is the necessary precision of the microlenses and the uniformity of all microlenses of a security element as well as the extreme registration accuracy between the microlenses and the enlarged of these microstructures.
  • An ID card which is made up of a plurality of plastic layers, wherein at least two adjoining plastic layers have a different transparency and at least one of these layers has depressions, which are at least partially filled by the material of the adjacent layer.
  • the thicknesses of the different transparent layers vary, so that in reflected light a light-shadow effect results, which is reversed in transmitted light.
  • the deforming layer may be provided with a print which plastically deforms depending on the depressions, whereby a spatial impression of the printed image can be obtained.
  • the identification card can have a surface relief at the locations of the depressions through them, so that the pattern can be felt as a surface relief.
  • a disadvantage of the method described here for producing a badge that the feature can be introduced only at the time of manufacture of the card body of the badge. A later contribution, for example, after the introduction of personalized data to protect them, or a contribution of personalized or individualized data is not possible.
  • the feature thus created is totally reflective, highly glossy or dull, so it can not be mounted over other security features or data.
  • a security feature is known that is produced by means of a microprism film.
  • the security feature has at least two areas with such microprisms. In these areas, the security feature is reflective when viewed in a first viewing direction and transparent in a second viewing direction.
  • the materials of the microprisms and of a bonding agent have different refractive indices.
  • US 2007/0098959 A1 discloses substrates and articles having surface reliefs made with coatings having different refractive indices in the printing process.
  • a coating provided with a surface relief may be provided with a second coating so that different shades appear at different viewing angles.
  • FR 2 893 424 A1 discloses a method and / or security feature according to the preamble of claims 1 and 5, respectively, and provides an optical structure with two outer sides for a security document.
  • the optical structure is formed of microreliefs arranged on both its outer sides.
  • the material of the optical structure has a different refractive index than the material of the microreliefs. When viewing the optical structure at different viewing angles, the structure appears reflective or transparent.
  • Security features of the type described above can not be used with simple means at any point in the manufacturing and / or personalization process in order to secure value or security documents, in particular the personalized or individualized information incorporated in these documents, against forgery and falsification.
  • This security feature should be able to be introduced at any point in the production and / or personalization process of the value or security document in a simple and cost-effective manner in the document, in particular for the protection of personalized or individualized information.
  • the object is achieved by a security feature is created, which is visually perceptible without technical aids.
  • the security feature according to the invention is formed from at least two layers of material, wherein the second layer of material is a first lacquer layer.
  • This first lacquer layer covers the first material layer at least in partial areas. This cover extends over at least two mutually separate subregions of the first material layer. The coverage may also be a dot pattern, for example.
  • the first lacquer layer has a refractive index difference of at least 0.1 relative to the first material layer.
  • the first lacquer layer has a structuring or represents a structuring.
  • the spatial arrangement of the lacquer layer represents a structuring.
  • the structuring is such that electromagnetic radiation which passes from the first material layer into the first lacquer layer is refracted.
  • the structuring according to the invention has a structure size parallel to the surface (to the main plane of the first material layer) of at least 10 .mu.m. If the structuring is given by a dot pattern, then the spot size is at least 10 ⁇ m, whereby a point here means a coherent, two-dimensionally closed partial area of the first lacquer layer. Under the structure size parallel to the surface of the shortest occurring in a structure distance between two opposite edges of the structure is understood by their center of gravity. If the structuring is given by a variation of the thickness of the first lacquer layer, then regions with approximately the same thickness have a lateral extent of at least 10 ⁇ m.
  • the structuring furthermore has, according to the invention, a structure size perpendicular to the surface of at least 5 ⁇ m, preferably between 5 ⁇ m and 10 ⁇ m. If the structuring is given by a dot pattern, then the dot height is at least 5 ⁇ m, preferably between 5 ⁇ m and 10 ⁇ m.
  • a second lacquer layer is arranged on the first lacquer layer. The first material layer, the first lacquer layer and the second lacquer layer are transparent. The second lacquer layer has essentially the same refractive index as the first material layer.
  • the advantages of the security feature according to the invention result from the simple production and the simple verification. Since the security feature according to the invention is visually perceptible due to refraction of electromagnetic radiation, no special lighting conditions are necessary for its observation, as are necessary, for example, in the observation of holograms, which are visually perceptible due to diffraction of electromagnetic radiation.
  • the production of a security feature according to the invention is simpler and more flexible than that of the above Security features, since neither the high precision required for a diffractive structure nor the relative positioning accuracy required for micro lens systems is necessary.
  • the security feature has a structuring parallel to the surface with a structure size of at least 100 ⁇ m.
  • the security feature has a structuring parallel to the surface with a feature size of at least 1 mm.
  • the security feature additionally has a second lacquer layer, which is arranged above the first lacquer layer.
  • the advantage of this embodiment is the protection of the structuring of the first lacquer layer against mechanical stress, in particular protection against abrasion.
  • the second lacquer layer may have a refractive index difference of at least 0.1 relative to the first lacquer layer.
  • the second lacquer layer has the same or a similar refractive index as the first material layer. Under similar, a refractive index difference of less than 0.02 is considered.
  • the structuring of the first lacquer layer perpendicular to the surface of the security feature is at least partially, preferably completely, compensated by the second lacquer layer so that the security feature is hardly, preferably not, palpable.
  • the second lacquer layer has abrasion-resistant properties.
  • the abrasion-resistant properties are preferably produced by the addition of ZnO and / or SiO 2 .
  • the first material layer as well as the first and the second lacquer layer are transparent.
  • the refractive index of the first lacquer layer is adjusted by the addition of at least one high-index additive by at least 0.1 higher than the refractive index of the first material layer.
  • At least one of the high refractive index additives is selected from the group comprising glass, feldspar, TiO 2 , ZrO 2 and diamond.
  • a high-index additive nanocrystalline so with a particle size less than 100 nm, more preferably having a particle size less than 25 nm.
  • the first material layer consists of a material selected from the group comprising polycarbonate (PC), polyethylene terephthalate (PET) and its derivatives, polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), thermoplastic elastomers ( TPE), paper and glass, and mixtures of these materials.
  • the first material layer may have a thickness of at least 50 ⁇ m.
  • the first material layer is a document blank.
  • a document blank may be a multi-layer composite, for example a multi-layer laminate in which layers of identical or different materials may be present. If it is a document blank made of different materials, the refractive index of the first material layer is considered to be the refractive index of an uppermost transparent layer.
  • the topmost transparent layer may be a lacquer layer.
  • At least the first lacquer layer contains at least one substance which can be excited to luminesce.
  • a document according to the invention has at least one security feature visually perceptible without technical aids according to the present invention. Furthermore, the document may have one or more other security features. Examples include guilloche printing, iris printing, optically variable color, laser engraving, luminescence color, hologram, electronic components, for example RF chip and / or display, as well as metameric colors.
  • the document may be a value or security document, a passport, an identity card, a birth certificate, a visa, a driving license, a credit card, a bank card, a company card, a membership card, a vehicle registration document, a banknote, a check, a Act stock, a stamp or a tax sign.
  • the document may be constructed from polycarbonate (PC), polyethylene terephthalate (PET) and its derivatives, polyvinylchloride (PVC), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), paper, as well as mixtures of these materials.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PVC polyvinylchloride
  • PP polypropylene
  • PE polyethylene
  • TPE thermoplastic elastomers
  • the security feature visually perceptible without technical aids is arranged on the surface of the document.
  • the security feature is applied to a document blank, preferably after personalization.
  • a further layer of material may be disposed over the security feature.
  • the further material layer may be a film of a photopolymer into which a volume hologram is or may be imprinted, or an abrasion protection film.
  • the security feature visually perceptible without technical aids is arranged in the interior of the document.
  • the security feature can be applied to a layer, for example a film, which is connected to further layers, for example by means of lamination, to form a document.
  • the advantage of this embodiment is given by the fact that information provided by the security feature in the document, for example personalization data introduced by means of laser personalization, can be secured if, for example, the security feature is introduced between two laser-capable films.
  • the first material layer may be, for example, a plastic film having a thickness between 25 ⁇ m and 300 ⁇ m made of polycarbonate (PC), polyethylene terephthalate (PET) and its derivatives, polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), paper, as well as mixtures of these materials or act around a document blank.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PVC polyvinyl chloride
  • PP polypropylene
  • PE polyethylene
  • TPE thermoplastic elastomers
  • a lacquer is applied to the first material layer. Curing of the lacquer produces the first lacquer layer, which has a difference in refractive index of at least 0.1 relative to the first material layer.
  • a structuring of the first lacquer layer is produced, which has a structure size parallel to the surface of the security feature of at least 10 ⁇ m and perpendicular to the surface of the security feature of at least 5 ⁇ m.
  • This structuring can take place in that the application of the lacquer in step b) is structured, that the lacquer is applied unstructured in step b) and is patterned in a subsequent step, or that the first material layer in a further process step lying between the method steps a) and b), so that the first lacquer layer assumes the structuring of the first material layer during the application.
  • the application of the first lacquer layer takes place in the method step b) by printing in high, flat, gravure, through or digital printing on the first material layer.
  • the first lacquer layer is applied in method step b) by means of potting, spray coating or roller coating onto the first material layer.
  • the printing-technical application of the first lacquer layer takes place with simultaneous production of the structuring according to method step c).
  • Particularly suitable for the production of line patterns is intaglio printing.
  • Particularly suitable for the production of individualized structuring is ink-jet printing.
  • the first material layer provided in method step a) is first structured by means of reshaping.
  • all methods of embossing and / or ultrasound treatment of the first material layer may be considered as the method of forming.
  • the first lacquer layer is applied, which is structured by structuring the first material layer according to method step c).
  • the first lacquer layer in method step b) can first be applied unstructured.
  • the first lacquer layer is patterned by means of photolithographic techniques.
  • a lacquer can be applied, which is cured by means of UV light. The curing can be carried out by means of targeted exposure to UV light.
  • the uncured paint is removed, for example, washed off with a solvent.
  • a varnish is first applied and cured. The resulting lacquer layer is exposed so that the lacquer can be decomposed and washed away at the exposed areas.
  • the first lacquer layer is cured during method step c).
  • a paint is applied unstructured.
  • the structuring is carried out according to method step c), for example by impressing an embossing stamp. Since the paint is not cured, only a very low wear on the stamping tool occurs. For example, while the die is on the lacquer layer, it is thermally cured.
  • a cover film can be applied to the first lacquer layer, which has a structured surface. The structuring of the lacquer layer is produced by molding the structured surface of the cover foil. After application of the cover film, the paint layer is cured and then removed the cover sheet.
  • the second lacquer layer is applied to the first lacquer layer.
  • the application of the second lacquer layer can be done by printing in high, flat, gravure, through or digital printing, by means of potting, spray coating or roller coating on the first coat of paint.
  • the first coating has two curing steps, for example by polyaddition and by radical polymerization.
  • the first hardening step causes the first lacquer to become sufficiently firm so that the introduced structure is no longer destroyed by the following steps.
  • the second paint has a curing step that is identical to the second curing step of the first paint. This leads to a chemical reaction between the two paints in process step x), so that both paint coats are inseparably bonded together.
  • a second lacquer layer is applied to the first lacquer layer before the first lacquer layer has hardened. Both layers of paint are then cured in a common curing step.
  • Process step A) comprises process steps a), b) and c) for producing the security feature according to the invention.
  • further material layers are provided from which the document is to be constructed. These can be made of the same material as the first material layer, but they can also consist of different materials.
  • one of the further material layers may be an inlay made of a thermoplastic elastomer, in particular for embedding electronic components.
  • the first and the further material layers are arranged one above the other according to the layer structure of the document in method step C).
  • the first material layer is preferably arranged in such a way that the security feature produced in method step A) is arranged between two material layers.
  • the layers are permanently connected to one another, for example by means of lamination.
  • a security feature not according to the invention 10 is shown, which is formed from a first material layer 11 and a first lacquer layer 12.
  • the first lacquer layer 12 has a structuring which has a feature size parallel 15 and perpendicular 16 to the surface of the security feature 10, that is, to a plane that is coplanar with the surface of the first material layer.
  • the structure size 15 parallel to the surface is at least 10 microns.
  • the structure size 16 perpendicular to the surface is at least 5 microns.
  • the first resist layer 12 forms a dot pattern and may be formed by, for example, ink jet printing. Due to the different refractive indices of the first material layer 11 and the first lacquer layer 12, the visual impression of floating drops on the first material layer 11 results.
  • a further non-inventive security feature 10 is shown, in which on the first material layer 11, a first resist layer 12 is arranged.
  • the first lacquer layer 12 completely covers the first material layer 11 at least in the area shown.
  • the first lacquer layer is structured on the surface and has feature sizes parallel 15 and perpendicular 16 to the surface of the security feature 10, which are 5 microns perpendicular to the surface and 10 microns parallel to the surface.
  • the lacquer layer can also be significantly thicker.
  • Such a security feature can be produced, for example, by applying a uniform lacquer layer and embossing a structuring during the curing of the first lacquer layer. Due to the different refractive indices of the first material layer 11 and the first lacquer layer 12, the visual impression of floating drops on the first material layer 11 results.
  • a further non-inventive security feature 10 is shown, in which over the first material layer 11, a first resist layer 12 and above the first resist layer 12, a second resist layer 13 is arranged.
  • the second lacquer layer 13 has abrasion-resistant properties and completely compensates for the structuring of the first lacquer layer 12, so that the security feature 10 on the surface of a document is particularly well protected against wear.
  • such a security feature 10 can also be integrated into the interior of a document without abrasion-resistant properties. With a lamination, the pressure would be even over the security feature due to the smooth surface 10 distributed so that the structuring of the first resist layer 12 would not be destroyed.
  • the refractive index of the first resist layer 12 may, for example, be at least 0.1 greater than the refractive index of the first material layer 11 and at least 0.1 greater than the refractive index of the second resist layer 13. The visual impression of the substance floating in the volume results Drops.
  • a further non-inventive security feature 10 is shown, in which a patterning in the first material layer 11 has been introduced, for example by means of embossing, milling or by means of ultrasound.
  • the first lacquer layer 12 can be applied uniformly, the structuring of the first lacquer layer 12 results from the structuring of the first material layer 11.
  • the visual impression of the volume of the ink results due to the difference between the refractive indices of the first material layer 11 and the first lacquer layer 12 Materials floating drops.
  • a further non-inventive security feature 10 is shown, in which over the first lacquer layer 12, a second lacquer layer 13 is arranged, which does not completely compensate for the structuring of the first lacquer layer 12. As a result, the structuring remains palpable. If the security feature 10 is arranged on the surface of a document, the structuring can not only be visually observed but also felt without technical aids. In addition to the visual impression, which the in Fig. 3 equals a tactile impression that is correlated with the visual impression. In places where an apparent drop can be perceived, a survey is noticeable.
  • a further non-inventive security feature 10 is shown, in which the structuring of the first lacquer layer 12 has different feature sizes parallel and perpendicular to the surface of the security feature 10.
  • the smallest structure size is at least 5 ⁇ m perpendicular to the surface.
  • the largest structure size perpendicular to the surface is at most 10 ⁇ m.
  • a further security feature 10 is shown in which a second lacquer layer 13 is arranged above the first lacquer layer 12, wherein the second lacquer layer 13 has the same refractive index as the first material layer 11.
  • the refractive index of the first lacquer layer 12 differs from the refractive index of the first material layer 11 and the second lacquer layer 13 by at least 0.1. This creates the visual impression that subregions of the first lacquer layer 12 float like drops in the volume of the security feature. For example, overlapping structures can be represented.
  • a document 20 is shown in which on a first material layer 11, which in this case represents a document blank, a first lacquer layer 12 and a second lacquer layer 13, in particular with abrasion-resistant properties, are arranged according to the invention.
  • the refractive index difference between the first lacquer layer 12 and the first material layer 11 and the second lacquer layer 13 produces the visual impression of drops floating in the volume of the document.

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  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Credit Cards Or The Like (AREA)

Claims (11)

  1. Procédé servant à fabriquer une caractéristique de sécurité pouvant être perçue visuellement sans moyens auxiliaires techniques, comprenant les étapes qui suivent consistant à :
    a) fournir une première couche de matériau (11) ;
    b) appliquer une deuxième couche de matériau formée par une première couche de vernis (12) au moins dans des zones partielles de la première couche de matériau, sachant que la première couche de vernis présente un indice de réfraction, qui diffère d'au moins 0,1 de l'indice de réfraction de la première couche de matériau ;
    c) produire une structuration de la première couche de vernis, sachant que la structuration présente une grandeur de structure, de manière parallèle par rapport à la surface de la caractéristique de sécurité, de moins de 10 µm, et, de manière perpendiculaire à la surface de la caractéristique de sécurité, de moins de 5 µm et sachant que la première couche de vernis est appliquée sur plusieurs zones partielles, séparées les unes des autres, de la première couche de matériau en formant plusieurs zones de couche de vernis, de sorte que l'agencement spatial des zones de couche de vernis forme la structuration de la première couche de vernis,
    sachant que la caractéristique de sécurité ainsi produite peut être perçue visuellement du fait de la réfraction d'un rayonnement électromagnétique, caractérisé en ce qu'une deuxième couche de vernis (13) est appliquée par-dessus la première couche de vernis, en ce que la première couche de matériau, la première couche de vernis et la deuxième couche de vernis sont transparentes, et en ce que la deuxième couche de vernis présente essentiellement le même indice de réfraction que la première couche de matériau.
  2. Procédé servant à fabriquer une caractéristique de sécurité selon la revendication 1, caractérisé en ce que l'application relevant de la technique d'impression de la première couche de vernis est effectuée en produisant simultanément la structuration selon l'étape de procédé c).
  3. Procédé servant à fabriquer une caractéristique de sécurité selon la revendication 1, caractérisé en ce qu'une structuration est produite sur la surface de la première couche de matériau fournie à l'étape de procédé a) dans un premier temps au moyen de la mise en forme, par exemple au moyen d'un estampage et/ou au moyen de ultrason, puis en ce qu'ensuite la première couche de vernis est appliquée lors de l'étape de procédé b), sachant que la structuration de la première couche de vernis est également produite selon l'étape de procédé c) par la structuration de la première couche de matériau.
  4. Procédé servant à fabriquer une caractéristique de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que l'application de la première et de la deuxième couche de vernis comprend les étapes de procédé qui suivent consistant à :
    u) appliquer un premier vernis utilisé aux fins de la formation de la première couche de vernis ;
    v) faire durcir en partie le premier vernis ;
    w) appliquer un deuxième vernis utilisé afin de former la deuxième couche de vernis ;
    x) faire durcir intégralement, dans le même temps, les deux vernis.
  5. Caractéristique de sécurité pouvant être perçue visuellement sans moyens auxiliaires techniques, formée à partir d'au moins deux couches de matériau, sachant qu'au moins une deuxième couche de matériau est une première couche de vernis (12), sachant que la première couche de vernis recouvre au moins dans des zones partielles une première couche de matériau (11) et que la première couche de vernis s'étend sur plusieurs zones partielles, séparées les unes des autres, de la première couche de matériau en formant plusieurs zones de couche de vernis de sorte que l'agencement spatial des zones de couche de vernis forme la structuration de la première couche de vernis, sachant que la première couche de vernis présente, par rapport à la première couche de matériau, une différence d'indice de réfraction d'au moins 0,1, sachant que la première couche de vernis représente et/ou présente une structuration, sachant que la caractéristique de sécurité peut être perçue visuellement du fait de la réfraction d'un rayonnement électromagnétique et sachant que la structuration de la première couche de vernis présente une grandeur de structure, de manière parallèle par rapport à la surface de la caractéristique de sécurité, de moins de 10 µm, et, de manière perpendiculaire par rapport à la surface de la caractéristique de sécurité, de moins de 5 µm, caractérisée en ce qu'une deuxième couche de vernis (13) est disposée sur la première couche de vernis, en ce que la première couche de matériau, la première couche de vernis et la deuxième couche de vernis sont transparentes, et en ce que la deuxième couche de vernis présente essentiellement le même indice de réfraction que la première couche de matériau.
  6. Caractéristique de sécurité selon la revendication 5, caractérisée en ce que la structuration de la première couche de vernis présente une grandeur de structure, de manière parallèle par rapport à la surface de la caractéristique de sécurité, de moins de 100 µm, de préférence de moins de 1 mm.
  7. Caractéristique de sécurité selon l'une quelconque des revendications 5 et 6, caractérisée en ce que la deuxième couche de vernis compense, en partie ou en totalité, la structuration de la première couche de vernis de manière perpendiculaire par rapport à la surface de la caractéristique de sécurité.
  8. Caractéristique de sécurité selon l'une quelconque des revendications 5 et 6, caractérisée en ce que la deuxième couche de vernis compense en partie la structuration de la première couche de vernis de manière perpendiculaire par rapport à la surface de la caractéristique de sécurité, et en ce que la deuxième couche de vernis présente une épaisseur de couche, qui est inférieure à la grandeur de structure de la première couche de vernis de manière perpendiculaire par rapport à la surface de la caractéristique de sécurité.
  9. Caractéristique de sécurité selon l'une quelconque des revendications 5 à 8, caractérisée en ce que la première couche de vernis contient au moins une substance pouvant être excitée pour produire une luminescence.
  10. Procédé servant à fabriquer un document comprenant une caractéristique de sécurité, sachant qu'au moins une caractéristique de sécurité est une caractéristique de sécurité selon l'une quelconque des revendications 5 à 9 pouvant être perçue visuellement sans moyens auxiliaires techniques.
  11. Document comprenant au moins une caractéristique de sécurité, sachant qu'au moins une caractéristique de sécurité est une caractéristique de sécurité selon l'une quelconque des revendications 5 à 9 pouvant être perçue visuellement sans moyens auxiliaires techniques.
EP10704330.9A 2009-02-04 2010-02-03 Signe de sécurité pour document et méthode pour le fabriquer Active EP2393668B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009007779.0A DE102009007779C5 (de) 2009-02-04 2009-02-04 Verfahren zur Herstellung eines ohne technische Hilfsmittel visuell wahrnehmbaren Sicherheitsmerkmals, Sicherheitsmerkmal für kunststoffbasierendes Wert- oder Sicherheitsdokument sowie Dokument mit wenigstens einem solchen Sicherheitsmerkmal
PCT/EP2010/000954 WO2010089155A1 (fr) 2009-02-04 2010-02-03 Signe de sécurité pour document de valeur ou de sécurité à base de matière plastique

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EP2393668A1 EP2393668A1 (fr) 2011-12-14
EP2393668B1 true EP2393668B1 (fr) 2015-06-24

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CN (1) CN102271929B (fr)
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DE102009020846A1 (de) * 2009-05-12 2010-11-25 Giesecke & Devrient Gmbh Farbannahmeschicht mit Aussparung
DE102012215742A1 (de) 2012-09-05 2014-03-06 Bundesdruckerei Gmbh Sicherheits- und/oder Wertprodukt
DE102013200895B4 (de) 2013-01-21 2017-05-11 Bundesdruckerei Gmbh Wert- oder Sicherheitsprodukt sowie Verfahren zur Herstellung eines Sicherheitsmerkmals auf oder in dem Wert- oder Sicherheitsprodukt
WO2015085439A1 (fr) * 2013-12-09 2015-06-18 Orell Füssli Sicherheitsdruck Ag Document de sécurité ayant un marquage invisible
DE102014013917A1 (de) * 2014-09-18 2016-03-24 Giesecke & Devrient Gmbh Sicherheitsdokument mit Schutzschicht
GB2566975B (en) 2017-09-29 2020-03-25 De La Rue Int Ltd Security Device And Method Of Manufacture Thereof
DE102018005308A1 (de) 2018-07-04 2020-01-09 Giesecke+Devrient Mobile Security Gmbh Schichtanordnung mit Glaskörpern
DE102019007885A1 (de) * 2019-11-13 2021-05-20 Mühlbauer Gmbh & Co. Kg Wert-oder Sicherheitsprodukt und Verfahren zum Herstellen eines Wert- oder Sicherheitsprodukts

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DE19915943A1 (de) * 1999-04-09 2000-10-12 Ovd Kinegram Ag Zug Dekorationsfolie
DE10013410B4 (de) * 2000-03-17 2011-05-05 Ovd Kinegram Ag Laminat, insbesondere in Form von Karten, und Verfahren zu dessen Herstellung
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GB0504959D0 (en) * 2005-03-10 2005-04-20 Rue International De La Ltd Security device based on customised microprism film
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DE102007007914A1 (de) * 2007-02-14 2008-08-21 Giesecke & Devrient Gmbh Prägelack für mikrooptische Sicherheitselemente

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Publication number Publication date
WO2010089155A1 (fr) 2010-08-12
EP2393668A1 (fr) 2011-12-14
CN102271929B (zh) 2014-12-17
CN102271929A (zh) 2011-12-07
DE102009007779B3 (de) 2010-10-07
DE102009007779C5 (de) 2017-07-27

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