EP2984227B1 - Sicherheitselement mit einer maskierungsstruktur mit einer mischung aus nanometrischen füllstoffen - Google Patents

Sicherheitselement mit einer maskierungsstruktur mit einer mischung aus nanometrischen füllstoffen Download PDF

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Publication number
EP2984227B1
EP2984227B1 EP14721533.9A EP14721533A EP2984227B1 EP 2984227 B1 EP2984227 B1 EP 2984227B1 EP 14721533 A EP14721533 A EP 14721533A EP 2984227 B1 EP2984227 B1 EP 2984227B1
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EP
European Patent Office
Prior art keywords
security
masking structure
masking
layer
comprised
Prior art date
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EP14721533.9A
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English (en)
French (fr)
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EP2984227A1 (de
Inventor
Jacques MACHIZAUD
Aurélie MAMAN
Michel Camus
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Oberthur Fiduciaire SAS
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Oberthur Fiduciaire SAS
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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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape

Definitions

  • “Secure document” means a means of payment, such as a bank note, a check or a restaurant ticket, an identity document, such as an identity card, a visa, a passport or a passport. driver's license, a lottery ticket, a ticket, a tax stamp or stamp, or a ticket for cultural or sporting events.
  • a security thread into a paperboard substrate.
  • This yarn is introduced totally in the paper or alternatively at least partly on the surface of the paper, especially in window.
  • This thread usually includes a text that appears in transmitted light, sometimes called CLEARTEXT®. Except for any windows, it is preferable that the wire is not visible in reflection, so as not to detract from the aesthetics of the document and not to hinder the visibility of the impressions carried by the substrate. This also provides additional security, the wire and its text being little or not visible in reflected light and visible in transmitted light.
  • a first solution is to use a highly reflective wire, by depositing a relatively large thickness of metal, to obtain a high optical density.
  • metal layers for example of aluminum, of low optical density.
  • a second solution is to apply a masking layer on the wire.
  • a masking layer consisting of titanium dioxide, zinc oxide or other particles makes it possible to make the back of the white wire dull, reducing the metallic appearance of the wire.
  • These layers are generally thin and do not allow to hide optimally a security thread.
  • increasing the thickness of such layers affects the visibility of CLEARTEXT® in transmitted light.
  • the masking layer evenly covers one side of the wire, its opacity reduces the visibility of the text in transmitted light. It is possible to deposit the masking layer only on the metal, but this complicates the manufacturing process. In addition, the masking layer can screen UV and thus oppose the use of luminescent layers within the wire.
  • a third solution for reducing the visibility of the yarn consists in producing a masking layer in the form of a semi-reflecting, continuous or raster metal layer.
  • the disadvantage of this solution is to reduce the visibility of the text.
  • FR 2 87I 174 discloses a document comprising an information vector and a band masking element.
  • US 2002/0056758 discloses an opaque protective layer affixed to both sides of a magnetic layer.
  • This opaque layer may contain iridescent pigments.
  • An alternative is to print the yarn with an opaque ink, for example containing titanium dioxide, which does not pass UV radiation, or optically variable pigments.
  • US 2008/0030020 describes a security document comprising a semi-reflective coating comprising iridescent pigments, such as mica-based particles, which are micrometric, non-nanometric particles.
  • iridescent pigments such as mica-based particles, which are micrometric, non-nanometric particles.
  • such pigments have a relatively high opacity.
  • US 2010/0213698 A1 discloses a security element.
  • the invention achieves this goal by means of a security element according to claim 1.
  • nuclear charge is meant a charge of one or more powdery compounds whose average size D50 is between 30 nm and 500 nm.
  • at least one of the charges consists of a single particulate material, preferably transparent to UV radiation.
  • the two charges may each consist of a single particulate material, these materials being different.
  • the security element may comprise at least one luminescent agent and at least one of the nanometric charges is at least partially, preferably totally, transparent to UV radiation, in particular UV radiation useful for luminescence.
  • the nanometric charge at least partially transparent to UV is present in a mass quantity of between 20 and 80%, better still between 30 and 70% and even more preferably between 40 and 60%, relative to the mass of the masking. All weights and weights are expressed in sec unless otherwise stated.
  • Nanometric fillers such as silica, titanium dioxide, calcium carbonate, barium sulfate, and zinc oxide can be used.
  • one of the, more preferably both, nanometric fillers has a dimension D50 of between 50 and 300 nm.
  • said at least two nanometric charges differ in their refractive index by at least 0.8.
  • the masking structure is preferably in the form of a single masking layer, comprising said mixture of at least two nanometric charges.
  • the security element may comprise as titanium dioxide nanoscale in the masking structure.
  • the amount of titanium dioxide is sufficiently small not to excessively absorb the UV radiation and to allow the use within the security element of at least one luminescent compound, in particular fluorescent under UV (365 nm), for example applied by printing or mixed with the masking layer or with a varnish or an adhesive of the security element.
  • Titanium dioxide is preferably of anatase nature, because it then has the advantage of having a lower UV absorption compared to titanium dioxide of rutile nature.
  • the anatase titanium dioxide is in particular at least partially transparent to UV, and in particular transparent over at least one wavelength range of the UV range.
  • the multilayer interference pigment has the particularity of preferentially selecting certain wavelengths in reflection and in transmission.
  • a blue iridescent pigment reflects in the specular direction (angle of reflection equal to the angle of incidence) more blue wavelengths than the others.
  • the color obtained is then complementary to the color in reflection, that is to say red-orange.
  • the multilayer interference pigments may be relatively transparent because they are not very absorbent, and consequently a layer of multilayer interference pigment will have diffuse reflection (in all other directions other than the specular direction) the same color as in transmission (complementary to the color in specular reflection).
  • the layer of blue iridescent pigment spread on a white paper will give a red-orange color.
  • the combination of the pigment and the nanometric charges enhances the diffusion of incident light within the masking structure, and decreases the reflective visibility of the security element. This combination also makes it possible to limit the proportion of the nanometric filler having the highest refractive index, in particular titanium dioxide, and thus to limit the opacification in transmitted light and, if appropriate, the absorption of UV.
  • the multilayer interference pigment according to the invention comprises a transparent base, preferably mineral, coated with at least one layer of a refractive index material different from that of the base.
  • the pigment may comprise a platelet base, preferably of mica or glass.
  • the pigment comprises mica or silica (silicon dioxide) coated with titanium dioxide.
  • the interference pigment has a blue, green or blue-green color.
  • the average size D50 of the pigment is preferably between 2 and 150 microns, more preferably between 5 and 40 microns, more preferably between 5 and 25 microns.
  • the mass quantity of multilayer interference pigment relative to the mass of the masking structure is preferably between 1 and 40%, better still between 2 and 30%, and more preferably between 5 and 15%.
  • the security element is preferably a security thread
  • the invention retains an interest when the security element is a foil or board or other security element.
  • the security element may have two opposite major faces and the masking structure be arranged to reduce the visibility of at least one of said faces.
  • the masking structure covers a support of the security element on one of its sides.
  • the masking structure can be in the form of a continuous coating without openings, thanks to the low opacity of the filler and the pigment. Thus, the manufacture of the security element is facilitated.
  • the masking structure may cover transparent or translucent areas of a security structure carried by the security element, as well as opaque areas of the security structure.
  • the thickness of the masking structure may be between 5 and 20 microns, more preferably between 8 and 13 microns.
  • the nanometric charges and, if appropriate, the multilayer interference pigment may be dispersed in a binder, which may be of any type, and in particular be applied in a fluid state to the element during its manufacture.
  • This binder can crosslink on drying or under UV irradiation.
  • the security element comprises a security structure according to the invention which can be implemented in various ways, but preferably the security structure comprises an opaque layer, in particular printed or deposited by a vacuum deposition method, and at least one aperture in this opaque layer.
  • the security structure is reflective and comprises in particular a metallization / demetallization. It is preferably a reflective security structure of low optical density, especially associated with underlying opaque layers.
  • the metal is, for example, aluminum, gold, copper, iron, silver, chromium, nickel, zinc, cadmium, bismuth, and their alloys and oxides. Openings in the form of text, for example in negative writing, are conventionally formed in the metal by demetallization.
  • the security element according to the invention comprises a support, in particular a thermoplastic material, preferably PET or polyester.
  • This support is preferably entirely transparent.
  • the security structure may be located on one side of the support and the masking structure on the other side.
  • the security structure and the masking structure can also be located on the same side of the support.
  • the masking structure can also be present in duplicate on the security element, on each side of the support, which may be desirable for masking a magnetic wire for example.
  • the security element may comprise a luminescent agent, in particular a fluorescent agent, for example applied by printing, mixed with a varnish or an adhesive of the security element or preferably incorporated in the masking structure, more preferably mixed with a layer. mask comprising the multilayer interference pigment and the nanoscale charge.
  • the security element may comprise a heat-sealable adhesive, in particular in contact with the masking structure.
  • the adhesive may comprise a luminescent agent, in particular fluorescent under UV.
  • the security element may comprise a luminescent agent, preferably UV fluorescent, within a distinct layer of the masking structure, preferably within a layer opposite the safety structure relative to the support, when it exists.
  • a luminescent agent preferably UV fluorescent
  • the invention further relates, in another of its aspects, to a secure document incorporating a security element according to the invention.
  • the security element is for example incorporated in mass, window or on the surface of the document substrate.
  • the Masking structure may be present on the back of the security element, when the window is located on the front side.
  • the security element may or may not extend from one edge to the other of the document.
  • the document may include one or more additional security elements as defined below.
  • additional security features some are detectable by eye, daylight or artificial light, without the use of a particular device.
  • additional security elements comprise, for example, colored fibers or boards, fully or partially printed or metallized wires. These additional security features are said to be first level.
  • additional security elements are detectable only with a relatively simple apparatus, such as a lamp emitting in the ultraviolet (UV) or infrared (IR).
  • UV ultraviolet
  • IR infrared
  • additional security elements include, for example, fibers, boards, strips, wires or particles. These security elements can be visible to the naked eye or not, being for example luminescent under the lighting of a Wood lamp emitting at a wavelength of 365 nm. These security elements are said to be second level.
  • Additional security elements require for their detection a more sophisticated device. These security elements are for example capable of generating a specific signal when they are subjected, simultaneously or not, to one or more external excitation sources. The automatic detection of the signal makes it possible to authenticate, if necessary, the document.
  • additional security elements comprise, for example, tracers in the form of active materials, particles or fibers capable of generating a specific signal when these tracers are subjected to optronic, electrical, magnetic or electromagnetic excitation. These additional security features are said to be third-level.
  • the additional security element (s) present in the document may have first, second or third level security features.
  • the subject of the invention is also a method for authenticating a document as defined above, in which it is observed that light transmitted the security element. Observation can be done through a window of the document.
  • the invention further relates, in another of its aspects, a method of manufacturing a document as defined above, wherein is incorporated in the window or on the surface of the security element.
  • the document 1 comprises a substrate 2, preferably paper, formed of one or more jets.
  • the document 1 integrates a security element 10 according to the invention, in the form of a thread ("thread” in English) in the example under consideration.
  • the security element 10 comprises a support 11 made of thermoplastic material, which ensures the mechanical strength of the wire.
  • This support 11 is for example in matter transparent thermoplastic such as PET or polyester.
  • the thickness e of the support 11 is, for example, from 6 to 30 ⁇ m and the width w of the element 10 from 1 to 10 mm.
  • the security element 10 comprises a security structure 12, for example formed by metallization / demetallization.
  • the security structure 12 thus comprises, for example, a metal layer 12a, opaque, and openings 12b in the form of letters or other recognizable patterns. These openings 12b are visible in transmitted light through a window 3 of the document 1.
  • the security structure 12 can also form a recognizable halftone image whose subject is for example present on the document.
  • the security structure preferably comprises metallization / demetallization, it may also comprise printed patterns, for example with a metallic, magnetic or electrically conductive ink.
  • the security element 10 comprises a masking structure 13, for example as illustrated in FIG. figure 2 in the form of a single layer opposite the safety structure 12 with respect to the support 11.
  • the security element 10 may also comprise a layer of a heat-sealable adhesive 14, preferably located as illustrated on an outer face of the element 10, for example on the opposite side to the security structure 12 with respect to the support 11.
  • the element 10 may comprise a layer of heat-sealable adhesive on each of its external faces.
  • the layer 14 may comprise a luminescent agent, in particular a fluorescent agent.
  • the masking structure 13 makes it possible to reduce the visibility of the element in the substrate 2 while preserving the transparency of the patterns 12b in transmission, as well as the UV transparency if necessary.
  • the invention avoids allowance issue within the substrate because the masking structure 13 can be thick relatively low cost.
  • the invention allows the use to achieve the security structure 12 of a metal layer of relatively low optical density, thanks to the presence of the masking layer 13, without this makes the wire too visible in reflection.
  • the masking structure 13 comprises, according to the invention, a mixture of at least two nanometric charges.
  • the masking structure 13 comprises colloidal fumed silica, the particle size of which is nanometric, combined with carbon dioxide.
  • nanometric titanium for example titanium dioxide Rutile PGG 121 from the company Cristal whose particle size D50 is less than 220 nm.
  • the colloidal fumed silica consists of silica nanoparticles, the size of which is less than 120 nm for half of the particles.
  • the size of the silica particles is between 30 and 500 nm and more preferably between 50 and 300 nm.
  • the thickness t of the masking layer is between 2 and 30 ⁇ m, preferably between 5 and 20 ⁇ m and better still between 8 and 13 ⁇ m.
  • the mass quantity of colloidal fumed silica with respect to the mass of the masking structure is between 20 and 80%, better between 30 and 70% and preferably between 40 and 60%.
  • the mass quantity of titanium dioxide relative to the mass of the masking structure is preferably between 1 and 40%, better still between 2 and 30% and preferably between 3 and 1.5%.
  • This layer can be applied by gravure (or gravure coating) in the form of a coating of uniform thickness of 10 microns.
  • the security structure 12 is a 300 nm thick aluminum layer, with a negative writing text, as illustrated in FIG. figure 4 .
  • the support 11 is made of PET.
  • At least one optically variable layer may also be deposited.
  • This additional layer comprises for example liquid crystals, iridescent pigments and / or interferential layers or structures such as a hologram.
  • the security element may also comprise a magnetic coating, for example in code form.
  • the security structure 12 and the masking structure 13 can be located on the same side of the support 11.
  • the other face of the support can receive any additional security means, for example a luminescent compound, an optically variable structure, a holographic structure or a lenticular network.
  • FIG 4 there is shown a security element 10 in which the masking structure 13 is composed of two superimposed layers 13a and 13b respectively containing the nanometric charges and the multilayer interference pigment. These two layers can be applied to one another.
  • the security element may be in the form of an integral security wire fully en masse in the security document substrate.
  • the masking layer is advantageously applied to both sides of the wire to mask it in reflection and allow its observation in transmitted light.
  • the security element 10 may also be in the form of a foil or patch applied to the surface of the substrate 2 of the document 1 as shown in figure 5 .
  • the masking structure according to the invention then makes it possible to make the inner face 19 of the element 10 turned towards the substrate 2 less visible when the masking structure is interposed between the substrate 2 and the layer or layers of the element. security to conceal.
  • the security element 10 is in the form of a planchette.
  • the masking structure can extend on the two main faces of the board.
  • the latter may comprise a luminescent compound, in particular a fluorescent compound.
  • the security element is in the form of a fiber, in particular colored, metallic and / or magnetic.
  • the substrate may have a color shade.
  • the masking layer may be substantially white or have the same colored shade.
  • the adjustment of the color of the masking layer can be done by adjusting the color of the mixture of the nanometric charges and, if appropriate, the iridescence color of the multilayer interference pigment.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)

Claims (17)

  1. Sicherheitselement (1), vorzugsweise Sicherheitsfaden, Folie, Plakette oder Faser, vorzugsweise Sicherheitsfaden, für ein sicheres Dokument (1), umfassend:
    - eine Maskierungsstruktur (13) um die Sichtbarkeit einer Oberfläche des Elements zu verringern, wenn letzteres innerhalb des Dokuments (1) oder auf seiner Oberfläche vorliegt, wobei die Maskierungsstruktur eine Mischung ist aus mindestens zwei nanoskaligen Füllstoffen aus einer oder mehren pulverförmigen Verbindungen, deren Durchschnittsgröße D50 zwischen 30 nm und 500 nm liegt, wobei die wenigstens zwei nanoskaligen Füllstoffe einen Brechungsindex haben, der sich um wenigstens 0,5 unterscheidet, wobei einer der wenigstens zwei nanoskaligen Füllstoffe kolloidale Kieselsäure mit einem Massenanteil zwischen 20 und 80% bezogen auf die Masse der Maskierungsstruktur enthält und die Dicke (t) der Maskierungsstruktur (13) zwischen 2 und 30 Mikrometern liegt.
  2. Sicherheitselement nach dem vorhergehenden Anspruch, wobei das Element (10) zwei gegenüberliegende Hauptseiten umfasst und die Maskierungsstruktur die Sichtbarkeit von wenigstens einer der Seiten verringert.
  3. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei die wenigstens zwei nanoskaligen Füllstoffe eine Durchschnittsgröße D50 haben, die zwischen 50 und 200 nm liegt.
  4. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei die mindestens zwei nanoskaligen Füllstoffe einen Brechnungsindex haben, der sich um wenigstens 0,8 unterscheidet.
  5. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei einer der mindestens zwei nanoskaligen Füllstoffe pyrogene kolloidale Kieselsäure enthält, wobei diese kolloidale Kieselsäure vorzugsweise mit einem Massenanteil zwischen 30 und 70%, besonders bevorzugt zwischen 40 und 60% bezogen auf die Masse der Maskierungsstruktur enthalten ist.
  6. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei die mindestens zwei nanoskaligen Füllstoffe Titandioxid, insbesondere vom Anatas-Typ enthält, wobei das Titandioxid vorzugsweise mit einem Masseanteil enthalten ist, der zwischen 1 und 40%, vorzugsweise zwischen 2 und 30%, besonders bevorzugt zwischen 3 und 15% bezogen auf die Gesamtmasse der zumindest zwei nanoskaligen Füllstoffe enthalten ist.
  7. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei die Dicke (t) der Maskierungsstruktur (13) zwischen 5 und 20 Mikrometern, weiter bevorzugt zwischen 8 und 13 Mikrometern liegt.
  8. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei nanoskaligen Füllstoffe in einem Bindemittel in einer Schicht der Maskierungsstruktur dispergiert sind.
  9. Sicherheitselement nach einem der vorhergehenden Ansprüche, umfassend eine Sicherheitsstruktur (12), die zumindest teilweise, vorzugsweise vollständig der Maskierungsstruktur (13) überlagert ist, insbesondere eine Sicherheitsstruktur (12) mit einer lichtundurchlässigen Schicht (12a) und zumindest einer Öffnung (12b) in der lichtundurchlässigen Schicht, vorzugsweise Öffnungen in Form von Negativschrift.
  10. Sicherheitselement nach einem der vorhergehenden Ansprüchen mit einem Träger (11), insbesondere aus einem thermoplastischen Material, vorzugsweise aus PET oder Polyester.
  11. Sicherheitselement nach den Ansprüchen 9 und 10, wobei die Sicherheitsstruktur (12) auf der einen Seite des Trägers (11) angeordnet ist und die Maskierungsstruktur (13) auf der anderen Seite.
  12. Sicherheitselement nach den Ansprüchen 9 und 10, wobei die Sicherheitsstruktur (12) und die Maskierungsstruktur (13) auf der gleichen Seite des Trägers (11) angeordnet sind.
  13. Sicherheitselement nach einem der vorhergehenden Ansprüche, wobei die Maskierungsstruktur ferner ein mehrschichtiges Interferenzpigment enthält, umfassend vorzugsweise eine mineralische Basis, die mit mindestens einer Schicht mit einem anderen Brechungsindex als demjenigen der Basis beschichtet ist, insbesondere einer plättchenförmigen Basis, vorzugsweise aus Glimmer oder Glas, wobei der Massenanteil des mehrschichtigen Interferenzpigments bezogen auf die Masse der Maskierungsstruktur zwischen 1 und 40%, vorzugsweise zwischen 2 und 30%, weiter bevorzugt zwischen 5 und 15% ausmacht, wobei die Größe des mehrschichtigen Interferenzpigments vorzugsweise zwischen 2 und 150 Mikrometern, bevorzugter zwischen 5 und 40 Mikrometern und am bevorzugtesten zwischen 5 und 25 Mikrometern liegt.
  14. Sicherheitselement nach einem der vorhergehenden Ansprüche, ferner umfassend ein lumineszierendes Mittel, insbesondere eingemischt in eine Schicht der Maskierungsstruktur.
  15. Sicherheitselement nach einem der vorhergehenden Ansprüche, umfassend einen heißsiegelbaren Klebstoff (14), insbesondere in Kontakt mit der Maskierungsstruktur (13), wobei der Klebstoff ein lumineszierendes, insbesondere fluoreszierendes Mittel enthält.
  16. Sicherheitselement nach einem der vorhergehenden Ansprüche, umfassend ein lumineszierendes Mittel, insbesondere in einer separaten Schicht der Maskierungsstruktur (13), vorzugsweise in einer Schicht, die bezogen auf der Träger gemäß Anspruch 10 der Sicherheitsstruktur gemäß Anspruch 9 gegenüberliegt.
  17. Dokument mit einem Sicherheitselement (10) nach einem der vorhergehenden Ansprüche, wobei das Sicherheitselement in der Form eines in ein Fenster oder in eine Masse eingebetteten Fadens ausgestaltet ist.
EP14721533.9A 2013-04-11 2014-04-10 Sicherheitselement mit einer maskierungsstruktur mit einer mischung aus nanometrischen füllstoffen Active EP2984227B1 (de)

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FR1353252A FR3004471B1 (fr) 2013-04-11 2013-04-11 Element de securite comportant une structure de masquage contenant un melange de charges nanometriques.
PCT/IB2014/060625 WO2014167527A1 (fr) 2013-04-11 2014-04-10 Element de securite comportant une structure de masquage contenant un melange de charges nanometriques

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FR3004470B1 (fr) * 2013-04-11 2015-05-22 Arjowiggins Security Element de securite comportant un pigment interferentiel et une charge nanometrique.
FR3004471B1 (fr) 2013-04-11 2015-10-23 Arjowiggins Security Element de securite comportant une structure de masquage contenant un melange de charges nanometriques.

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EP2984227A1 (de) 2016-02-17
CN105308240A (zh) 2016-02-03
FR3004471B1 (fr) 2015-10-23
US20160059611A1 (en) 2016-03-03
FR3004471A1 (fr) 2014-10-17
CN105308240B (zh) 2019-04-05
US10328738B2 (en) 2019-06-25
WO2014167527A1 (fr) 2014-10-16

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