EP2660067B1 - Documents de valeur avec revêtement de protection et leur procédé de fabrication - Google Patents

Documents de valeur avec revêtement de protection et leur procédé de fabrication Download PDF

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Publication number
EP2660067B1
EP2660067B1 EP13002290.8A EP13002290A EP2660067B1 EP 2660067 B1 EP2660067 B1 EP 2660067B1 EP 13002290 A EP13002290 A EP 13002290A EP 2660067 B1 EP2660067 B1 EP 2660067B1
Authority
EP
European Patent Office
Prior art keywords
protective layer
substrate
regions
matted
region
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.)
Not-in-force
Application number
EP13002290.8A
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German (de)
English (en)
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EP2660067A1 (fr
Inventor
Katharina Reichel
Patrick Renner
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.)
Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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Publication of EP2660067A1 publication Critical patent/EP2660067A1/fr
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Publication of EP2660067B1 publication Critical patent/EP2660067B1/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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • B42D25/342—Moiré effects
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing

Definitions

  • the invention relates to a value document, such as a banknote, a document or a document of identification, which has a planar substrate which is provided on at least one security element on one or both surfaces, the surfaces being protective coatings of UV lacquer or another radiation-curable lacquer have, which cover the surfaces including the security elements over the entire surface.
  • the protective layers have matted areas and non-matted areas, or areas with different gloss levels, the security elements being covered by a non-matted protective layer area or a protective layer area with a high degree of gloss.
  • the invention also relates to a method for producing such a value document, in particular a banknote, which has matted and not matted and / or differently matted surface areas.
  • Security documents such as banknotes, documents and identity documents, in particular banknotes, must be protected against counterfeiting and are equipped for this purpose with so-called security elements.
  • Security elements are, for example, foil strips or foil patches with optically variable security features, security threads with security features, such as diffraction structures, interference layer structures or lens structures, or other counterfeit protection means.
  • Continuous importance is also being given to through-openings in banknotes or other value documents, ie holes in the value documents, which are completely or partially closed by means of a transparent or a partially transparent film.
  • the films are often combined with additional security features, such as security features to be tested in transmitted light, such as transparent holograms.
  • value documents in particular banknotes
  • banknotes are exposed to heavy loads during their circulation. They are wrinkled, folded, soiled with solid and liquid substances, and must therefore be withdrawn from use after a certain period of time.
  • value documents are therefore often provided with protective coatings.
  • the coatings must not only protect against dirt and wear, but also meet other requirements.
  • the haptic character of a banknote is mainly expressed by its grip and bending stiffness, and it also has a characteristic sound when deformed and wrinkled. It is desirable that the coating does not change the haptic character or as little as possible.
  • Value documents which usually consist of a substrate based on paper, have a matt surface appearance, which should not be changed by a protective coating as possible.
  • very transparent coatings especially the protective coatings mentioned above, typically produce very smooth, glossy surfaces that adversely affect the visual appearance and feel of a value document.
  • uncoated value documents can have an undesirable gloss, for example by printing in intaglio printing. Due to the high pressure with which the substrate is pressed against the printing plate in this process, the paper surface in the non-engraved areas of the printing plate is strongly compressed and smoothed. Thereby For example, unwanted gloss may be generated on the paper substrate, which should be reduced by a dull coating of the substrate.
  • the perceptibility of the security element remains unchanged, but the value document remains without protection in the area of the security element. However, if the entire document of value is completely coated with a matted protective layer, it is fully protected and has the desired matt surface appearance, but the security element under the protective coating is impaired in its perceptibility.
  • the dull character of protective coatings is typically added to the resist compositions by the addition of matting agents, such as silica gels, polymer powders, or waxes reached.
  • matting agents such as silica gels, polymer powders, or waxes reached.
  • the matting agents function as scattering centers and in particular affect the optical properties of the above-mentioned optically variable security elements.
  • the value document provided with the protective coating should give the impression of an uncoated value document and offer an attractive, dull appearance.
  • the degree of gloss or the degree of matting should be adjustable as desired.
  • the coating should be suitable for different types of securities, i. for value documents with a paper substrate, in particular with a cotton substrate, but also for value documents with a polymer substrate or a hybrid substrate (paper-film composite material).
  • optical perceptibility of particularly critical security elements such as optically variable security elements, or of security elements in through openings should not be impaired.
  • the dull protective coating should therefore not be dull selectively in the area of the security elements, but allow an unobstructed view of the security elements in order to allow their undisturbed verification.
  • the document EP 1669 193 discloses a visual element having a deep gloss pattern having a protective layer.
  • a value-document substrate which has at least one security element on one or both surfaces is coated over its entire surface with a UV-curable lacquer or another radiation-curable lacquer composition, for example an electron-beam-curable lacquer, on both surfaces.
  • a lacquer which is curable by short-wave monochromatic vacuum ultraviolet (VUV) and UV-C radiation of a certain predetermined wavelength and also by monochromatic UV radiation of a certain second, larger wavelength (ie lower frequency).
  • VUV vacuum ultraviolet
  • UV-C radiation monochromatic UV radiation of a certain second, larger wavelength (ie lower frequency).
  • This high energy V-UV and UV-C radiation can be generated in particular by excimer lamps (gas discharge emitters) which work with a noble gas or a noble gas-halogen mixture.
  • the gas is excited in the high voltage alternating field, forming "excited dimers". On their decay, these emit a wavelength-specific, almost monochromatic UV radiation typical for the gas species.
  • the characteristic wavelength is 172 nm.
  • the high-energy V-UV or UV-C radiation can also be generated with so-called excimer lasers. Irrespective of the radiation source, the use of the term "excimer radiation”, V-UV and UV-C radiation in the context of the present application always means monochromatic radiation.
  • excimer is the abbreviation for "Excited dimer.” It is an excited particle (dimer), which emits light of a characteristic wavelength in the transition from the excited to a less excited state (in particular ground state)
  • excimer radiators or radiation sources based on this principle are available for the generation of electromagnetic radiation in the wavelength range from about 120 nm to about 380 nm Further details on the wavelengths of the excimer radiators used according to the invention are still available listed below.
  • the high-energy, short-wave excimer radiation is able to initiate a photochemical microfolding of the surfaces of UV-curable coatings or in the case of very high-energy UV radiation of electron-beam-curable coatings.
  • the V-UV or UV-C photons are able to penetrate only a few 100 nm in the irradiated paint layers and therefore produce in lacquer layers that exceed this thickness, on the irradiated surface, a hardened skin that is relatively highly crosslinked.
  • shrinking stresses are produced which result in micro-aging of the cured paint skin as it floats under it on the still uncured, liquid paint layer.
  • liquid lacquer layer with the micro-folded surface skin is now irradiated with longer-wave UV light, which can penetrate deeper into the coating, the still liquid part of the coating under the micro-folded surface skin is hardened and thus the coating is bonded to the substrate.
  • a lacquer layer with a micro-folded surface is formed, wherein the micro-folded surface offers a completely different appearance than a conventionally cured lacquer surface, for example a lacquer layer hardened by means of UV light of a medium-pressure mercury lamp. While the conventionally cured lacquer layer has a glossy surface, the micro-folded surface is dull.
  • the matting or degree of gloss of a micro-folded surface can not be calculated exactly or predicted, it can be reproduced and influenced to a considerable degree by setting suitable process parameters. By means of orienting experiments, parameters can be found which give micropleats with the desired degree of gloss. This effect is used according to the invention to equip documents of value with a matt, paper-like surface appearance without impairing the quality of optically demanding security elements.
  • gloss level as used in this application characterizes the so-called gloss, that is the property of a surface to reflect light wholly or partly specularly. No or hardly existing gloss is referred to as dullness.
  • the degree of gloss is determined using gloss meters, details of which can be found in DIN 67530 or ISO 2813, DIN 53778, DIN EN 13300, ASTM E 523 and BS 3900 Part D 5.
  • a protective layer or a value document according to the invention with a small degree of gloss is used if this protective layer or the document of value has a high degree of dullness, ie the protective layer is heavily matted in the considered area.
  • the protective layer is weak or slightly frosted, the gloss level is great.
  • a "large" gloss level is always used when the gloss level is more than 20 gloss points, measured in accordance with DIN EN 13300 (measuring angle 85 °).
  • the value document substrate coated on its two surfaces over the entire surface with a suitable UV varnish is irradiated in a first step with a short-wave excimer radiation, for example with a wavelength of 172 nm.
  • a short-wave excimer radiation for example with a wavelength of 172 nm.
  • an excimer emitter that is to say a radiation source based on the generation of excimer radiation, which emits radiation having a wavelength of 222 nm or 308 nm.
  • the irradiation should be carried out under an inert gas atmosphere, for example under nitrogen.
  • the energy input provided for the protective lacquer according to the invention can thus be essentially lossless under an inert gas atmosphere. Furthermore, will Ozone formation by the high-energy radiation is avoided by the inert gas atmosphere. Ozone would adversely affect especially the radical polymerization of the UV varnish. Suitable excimer radiators are available, for example the excimer Excirad 172 from IOT GmbH.
  • the excimer radiation only those surface areas of the layers of UV varnish are irradiated, which are to be matted.
  • the excimer radiation is targeted, e.g. by means of a directed laser beam, irradiated only on the surface areas to be matted, or the document of value is irradiated over the entire surface, wherein the non-matt surface areas are covered by a mask or aperture.
  • the irradiation cures the irradiated areas of the UV lacquer layer superficially, i. a paint skin is formed which has a thickness of about 100 nm and which floats on the non-cured part of the paint layer. Due to the shrinkage stresses occurring during the polymerization and curing, an irregular structure with elevations and depressions, a micro-folding structure, forms in the skin. In the non-irradiated areas, the surface of the lacquer layer remains liquid.
  • the value document substrate which now has a lacquer layer with hardened and uncured surface areas, is irradiated with UV radiation of a longer wavelength.
  • Suitable radiation sources are, for example, conventional mercury vapor lamps or a 365 nm LED.
  • the UV varnish layer is cured in the non-excimer-irradiated areas to form a smooth, glossy surface and through-cured in the precimer-cured areas, these areas being dull Show surface appearance due to the microstructure structure in these areas.
  • the gloss level of a microstructure structure is dependent on many parameters, e.g. Irradiation wavelength of the UV varnish, photon dose and viscosity, layer thickness and type of UV varnish depends, as will be explained below with reference to the figures.
  • the microstructure / gloss level can therefore be influenced by various parameters.
  • the type of lacquer components used and the viscosity of the lacquer composition also have an influence on the sequence and result of the microfolding. If the viscosity is too high, microfolding is no longer possible, which is why it may be necessary to mix in reactive diluents or to work with heated lacquers. Rubber-elastic paint components lead to a finer micro-folding than hard paints.
  • the substrate also influences the folding process. While dark and embossed substrates support microfolding, bright, smooth substrates, especially when these substrates are combined with a very thin lacquer layer, run the risk of overcuring without microplating on the surface of the lacquer layer. In such cases, it is beneficial to promote microfolding, for example, by using very low viscosity paints or by adding a small amount of fine particles which serve as nuclei for the initiation of the microfolding.
  • microfilming not only matts the surface, but also affects its feel.
  • a finer, flatter microstructure usually gives a more pleasant feel than a very coarse microstructure, which causes a very strong matting.
  • the feel of a coarser folding structure correlates quite well with the feel of typical value document substrates without a protective layer according to the invention.
  • a major advantage of the method according to the invention for matting valuable document protective layers is that the mattings can be easily produced in any desired shapes. All that is required in the excimer irradiation is to cover all surface areas that are not to be matted with a mask in the form of areas that are not to be matted. Then no micro-aging is initiated in these areas, and in the subsequent curing with UV radiation of higher wavelengths, a smooth, glossy surface is formed in these areas. The smooth, glossy surface ensures an undistorted view of underlying security elements.
  • a surface with heavily frosted areas, less heavily frosted areas, and shiny areas can be created by first irradiating at a wavelength of 222 nm, leaving all areas that are to remain shiny and all areas that are less heavily matted. are covered with a mask, then irradiated with a wavelength of 172 nm, with only the areas that are to remain shiny, covered with a mask, and finally with long-wave UV radiation and those surface areas that are to remain shiny hardened be hardened, and the areas under the micro-skin be hardened.
  • the excimer radiation can also be irradiated in a targeted manner onto the areas to be irradiated.
  • a suitably shaped aperture in front of the excimer lamp attached.
  • the protective coating according to the invention is suitable for all security substrates, ie in particular for paper substrates, polymer substrates and "hybrid substrates", which are to be understood composite film substrates, either a paper-based core and polymer-based outer layers or a core of a plastic material and Have paper-based outer layers. Accordingly, the protective coatings according to the invention are very suitable, in particular, for substrates based on cotton fibers or substrates with cotton fibers, as they are particularly popular for value documents.
  • a “substrate” in the present invention is meant a sheet material which may be treated differently. For example, a substrate may have certain coatings, impregnations or imprints and / or security elements.
  • one or more coatings are applied to the polymeric material, which primarily assure adhesion of the imprint or security element to be applied to the respective substrate.
  • This layer applied to the polymeric material is commonly referred to as the ink accepting layer.
  • ink receiving layers are generally dispensable, however, the paper substrate may be wholly or partially coated to provide it with certain properties, such as luminescent properties due to applied luminescent substances.
  • a substrate differs from a value document at least in that it does not yet have a protective coating according to the invention.
  • the matting process according to the invention can in principle be used for matting any value document protective coatings made of UV-curable coatings, the particular advantages are particularly useful if the coated value document has one or more security elements in which the viewer can opt for the optical detectability Authenticity check is particularly important.
  • security elements are in particular security elements with optically variable security features, such as holograms, hologram-like diffraction structures, diffraction patterns, structures with color shift effect, kinoforms, structures with isotropic or anisotropic scattering effects or other interference effects, thin-film elements, matt structures and structures with microlenses, for example moiré magnification arrangements, moire magnification arrangements Type and modulo magnification arrangements.
  • security elements are protected by means of a matted protective layer, they are as it were covered by the protective layer, so that the effect associated with an optically variable element is to some extent impaired.
  • the security elements may only lose their brilliance or their recognizability and perfect identifiability are seriously endangered. It is understood that the verifiability of security elements may not be compromised by a protective coating, but it is also desirable that the security elements be covered by the protective coating and, in particular, be protected from tampering attempts.
  • a protective coating should at least be as transparent as possible in the areas which are located above security elements with critical optical detectability and, if possible, also provide a glossy appearance, in order to additionally attract the attention of a viewer to steer the security element.
  • the matting according to the invention of the valuable document protective coatings by means of at least two-stage curing makes it possible to emphasize special security elements visually and to ensure their undisturbed optical detectability by a viewer to the same extent as would be the case with an uncoated value document, while the other surface areas of the Wertdocuments give a dull appearance, which is similar to an uncoated value document.
  • the security elements may be in the form of a security thread, a security tape, a security tape, a patch, or a label attached to a surface of a value document. They may also be partially embedded in the substrate, such as window security threads. With particular advantage, the present invention can also be used in see-through security elements. These are to be understood as meaning films that seal a through opening in a value-document substrate, wherein the films may be adhesively bonded to one or both surfaces of the value document or embedded in the value-document substrate.
  • see-through security elements can only consist of a transparent film, or they can additionally have see-through security features, such as a see-through hologram.
  • see-through security features are, as well as microlens structures and other optically variable security features, Protected by matted protective layers particularly strong in their verifiability and may therefore be protected only by protective layers without matting or with only slight matting.
  • UV-curable lacquers such as UV-curable lacquers and electron beam-curable lacquers
  • the coating compositions must be chosen so that they can be crosslinked (cured) by the wavelengths of radiation to be used for crosslinking.
  • the surface hardening under microfilling is carried out by irradiation with a wavelength of 120 nm to 350 nm, in particular 172 nm or 222 nm, while the curing by irradiation with a wavelength of 200 nm to 500 nm, preferably from more than 350 nm is performed.
  • the UV coatings should therefore preferably be curable with wavelengths in this range.
  • a wavelength of 172 nm can be generated for example by means of a xenon excimer, a wavelength of 222 nm can be generated by means of a KrCl excimer, and suitable for curing wavelengths of for example 308 nm or 365 nm can by means of a XeCl excimer radiator or a 365 nm LED are generated
  • UV curable lacquers are 100% acrylate, vinyl or epoxy based systems containing one or more photoinitiators.
  • the photoinitiators are, depending on the nature of the paint, free-radical or cationic crosslinking photoinitiators. Although photoinitiators are not required for the high-energy radiation micro-folding, but for the subsequent curing with longer-wave UV radiation advantage.
  • the photoinitiators are preferably used in an amount between 1 wt .-% and 20 wt .-%.
  • lacquers consist of acrylate- or methacrylate-functionalized prepolymers, where the prepolymers may have, for example, a polymer backbone from the group of polyurethanes, epoxies, polyesters or polyethers.
  • the prepolymer or prepolymers are used in an amount of up to 99% by weight.
  • the lacquer may contain a reactive diluent which contains acrylates, methacrylates or vinyl ethers as functional groups.
  • the reactive diluent is used in an amount between 0 wt .-% and 95 wt .-%.
  • the paints may contain conventional additives.
  • the protective coating is formed as a double layer, i. the "actual" protective layer of UV varnish is not applied directly to the value document substrate but to a primer layer, which in turn is applied to the paper-based substrate or to the imprints, security elements, etc. that are generally arranged on the substrate.
  • the primer layer is preferably a physically drying lacquer layer. "Physically drying” means that the drying takes place by evaporation of the solvent or the dispersing agent or by the solvent or dispersant being displaced into the substrate.
  • Particularly preferred for the preparation of the primer layer are polyurethane systems, in particular water-based dispersions of aliphatic polyester-polyurethanes or acrylic-styrene-polyurethanes.
  • the protective layer of UV varnish is applied to the dry primer layer, wherein the primer layer is used primarily for better adhesion of the UV varnish to the substrate.
  • Primer coats of physically drying paints have the added benefit of containing the depressions, bumps and pores of the substrate before applying the UV varnish.
  • UV-drying paints have the disadvantage that residual monomers and free photoinitiators generally remain after radiation curing as a function of the substrate quality, the radiation power, the initiator system and the monomer system as very reactive components in the recesses and pores of the substrate. Complete polymerization of the UV varnish may then no longer be possible.
  • Cotton papers as they are used for value documents, have a high porosity and surface roughness with microscopic projections and cavities, so that such substrates are particularly vulnerable to the said problem.
  • the problem is usually eliminated.
  • the coating of UV-curable lacquer and, if present, the primer layer is formed transparent. Since a poor wettability of the substrate during application of the coatings can lead to wetting disturbances and consequently to cloudiness of the coatings, it may be expedient to pretreat the surface of the primer layer in a way that promotes wetting prior to application of the UV coating. It may also be appropriate to use the surface provided for the application of the primer layer, e.g. pretreat the substrate surface to promote wetting before applying the primer layer. Thus it can be reliably avoided that form undesirable turbidity, which could affect the optical detectability of the security elements.
  • the matting of the valuable document protective layers is carried out according to the invention for different purposes. For one thing, it can be done in order to give the appearance and feel of an uncoated value document to a value document equipped with a protective coating that extends the circulation time.
  • the matte / gloss differences can also be used as a design element.
  • matted areas and imprints on the value document or security elements arranged on the value document may be related to each other so that some form of meaning is established, or one matte area or multiple matte areas with another feature of the value document complements an overall design.
  • several equally or differently matted areas can be related to each other, so that a meaningful relationship between them results or an overall design element is formed.
  • the gloss level of the UV protective layer can be adjusted by choosing suitable parameters.
  • the gloss level to be preferred depends on the purpose to be achieved. If a value document surface is completely matted, of course apart from the areas in which security elements are located whose optical detectability is not to be impaired, then the degree of gloss is preferably chosen such that the value document makes an uncoated impression. However, when matting is to be used as a design element, stronger matting, i. lower to very low gloss levels advantageous.
  • Has see-through security element In the area of such a see-through security element, it may be advantageous to carry out a very slight matting of the protective layer, for example in order to prevent unwanted reflections which impair the perceptibility of the security element. Even in the field of other security elements, such minor matting for reflection reduction can be provided, provided that they do not disturb the optical detectability of the security element.
  • the value document has on the first and the second surface of the substrate a first and second protective layer which is arranged substantially over the whole area.
  • a first and second protective layer which is arranged substantially over the whole area.
  • more than 70% of the protective layer has a matting according to the invention, wherein the matting of a protective layer does not have to be uniform, but also different degrees of matting, ie different degrees of gloss are possible.
  • a first and / or second protective layer which is frosted to more than 80% and in particular to more than 90%, is particularly preferred.
  • the haptics of the value documents according to the invention can additionally be set such that the feel of the value documents according to the invention with protective layer is comparable to corresponding value documents without protective layer, which likewise contributes to a recognition value of the value documents according to the invention.
  • Matting of more than 90% of the surface of the first and / or second protective layer basically also includes a conceivable embodiment in which 100% of the surface of the first and / or second protective layer is matted.
  • Such complete matting of the first and / or second protective layer surface is conceivable, for example, for value documents which, for example, have only an optically variable security element on a surface of the value document.
  • the protective layer surface over this one optically variable security element would be slightly matted and the remaining areas of the protective layer surface would be provided with the same or a different degree of gloss, so that as a result the entire protective layer surface of the value document is matted.
  • Fig. 1 shows a banknote 1 according to the invention in supervision.
  • the banknote 1 has on its upper side three security elements, a security element 6 with a hologram on a transfer film strip, a film patch 5 with a moire magnification arrangement and a film 8 which closes a through opening 9.
  • a micro-structuring structure which causes a strong matting of the surface.
  • the upper side of the banknote 1 is provided with a micro-structuring structure which causes a slight matting of the surface.
  • the upper side of the banknote 1 is smooth and shiny, ie it does not have a micro-folding structure.
  • a surface with strong matting is represented in the figures as a microstructure structure with a large convolution amplitude and in the text of a "rough micro-structure” spoken.
  • a low matte surface is represented as a micro-fold structure with small convolution amplitude in the figures, and is referred to as a "fine, shallow microfold structure”.
  • microstructure structures with a low amplitude can certainly correspond to surfaces with a high degree of matting, ie a low degree of gloss.
  • amplitudes of the microstructuring structures selected in the figures of the present application serve primarily to distinguish the non-matted, slightly frosted or strongly frosted regions of the inventive value document.
  • Fig. 2 is a schematic representation of a section through the banknote of Fig. 1 along the line A-A '.
  • the banknote 1 consists of a substrate 2, for example made of cotton paper, which has a through opening 9.
  • the through opening 9 is closed with a self-supporting film 8, which is arranged in the illustrated embodiment in a recess 11 of the substrate 2.
  • the film 8 would as a 9 covering the opening, ie the opening 9 on one side of the substrate occlusive film be arranged.
  • On the first surface 3 of the substrate 2 there is a security strip 6 and a moire magnification arrangement 5.
  • the security element 6 may be a so-called film security element with a composite structure which typically has an embossing lacquer layer with a holographic security feature, a PVD Layer, which is usually demetallized in part, a lacquer layer, for example with metallic ink, and optionally further functional layers, for example with metallic or fluorescent imprinting has. Moiré magnification arrangement 5 and comparable security elements are described in connection with FIG Fig. 3 explained.
  • an interference layer safety element 7 such as a thin film element is disposed on the second surface 4 of the substrate 2.
  • This interference layer security element 7 is shown in FIG Fig. 1 not visible because it is at the bottom of the substrate.
  • a first protective layer 10 is formed and on the second surface 4 of the substrate 2, a second protective layer 20 is formed, which via a primer layer 30 with the substrate 2 or with layers not shown, in particular printed layers on the substrate is connected.
  • the primer layer 30 consists of a physically drying lacquer and the first and the second protective layer 10, 20 each consist of a UV-curable lacquer (UV lacquer). How out Fig. 2 can be seen, the surfaces of the first and the second protective layer are each structured differently.
  • the surface 12 of the first protective layer 10 has non-structured, ie smooth and shiny surface areas 12 over the security elements 5, 6, which ensure their optimal optical detectability.
  • the surface area 13 has a flat, fine structuring, so it is very slightly frosted.
  • the weak matting ensures the optical detectability of the security features arranged on the film security element 8, and, on the other hand, the visual impression of the surface region 13 (very weak matting) perceptible to the viewer approximates the visual impression of the surface region 14 (strong matting).
  • the remaining surface areas 14 have a coarse micro-fold structure which causes a strong matting.
  • the surface areas 14 are those areas where there is no security element.
  • the surface regions 12, 13, 14 of the first protective layer surface define the protective layer regions 101 to 107.
  • the second protective layer 20 has on its surface a non-structured and therefore smooth, shiny area 22 which is located above the interference layer security element 7 and ensures its good visibility.
  • the surface region 23 corresponds to the surface region 13 of the first protective layer 10. It is also flat-structured and therefore very slightly matted.
  • the remaining surface regions 24 have coarse microfolding structures and are therefore heavily frosted. They give the underside of banknote 1 an uncoated appearance.
  • the surface regions 22, 23, 24 of the second protective layer surface define the protective layer regions 201 to 204.
  • the illustrated surface level of the protective layer is idealized insofar as the protective layers over the security elements 5, 6 and 7 have a surface level farther from the substrate surface than those areas of the protective layer that are not above the security elements 5, 6 and 7 are arranged.
  • the representation is ideal insofar as it depends on e.g. viscosity, layer thickness and rheological properties of the varnish or pre-cured varnish, leveling of the varnish layer may, to a certain extent, take place, i. the still flowable paint could flow from the higher areas a little into the lower areas. It is understood that by a suitable choice of the aforementioned paint parameters but also value documents can be obtained which are very close to the idealized representation according to the figures of this application.
  • the protective layer according to the invention is provided in a thickness of typically 1 ⁇ m to 15 ⁇ m, preferably from 2 ⁇ m to 7 ⁇ m.
  • Fig. 3 shows the principle of a moiré magnification arrangement as it is contained in the security element 5.
  • the moiré magnification arrangement has a carrier material 51 in the form of a transparent plastic film, which is provided on its upper side with a grid-like arrangement of microlenses 50.
  • On the underside of the transparent carrier material 51 is a motif layer 52 with micromotif elements 53.
  • the microlenses 50 and the micromotif elements 53 each form a grid-shaped arrangement of a defined symmetry, wherein the lattice differ slightly in their symmetry and / or in the size of their lattice parameters, to create the desired moire effect.
  • a moiré pattern results, which consists of a periodic arrangement of enlarged images of the micromotif elements 53.
  • Moiré magnification arrangements and other security elements with microlenses or other microfocusing elements for example Moire-type magnification devices and modulo magnification devices are among the safety elements in which the present invention can be used with particular advantage, since the optical detectability of such safety elements can be easily disturbed.
  • Moire-type magnification devices and modulo magnification devices are among the safety elements in which the present invention can be used with particular advantage, since the optical detectability of such safety elements can be easily disturbed.
  • a value document has such security elements, it is therefore preferable to equip the value document with a protective layer according to the invention which simultaneously prolongs the circulation time of the value document, ensures an overall matt surface appearance of the value document, and ensures optimal optical detectability of the security elements.
  • FIGS. 4 to 11 is shown as value documents (for example, the banknote 1 shown) with protective coatings that have matted and not matted surface areas, can be obtained according to the invention. Shown are each cuts as in Fig. 2 It is also shown in each case in which regions the later protective layer regions 101 to 107 of the first protective layer 10 and the later protective layer regions 201 to 204 of the second protective layer 20 are formed.
  • a banknote substrate 2 having a first surface 3 and a second surface 4.
  • the first surface 3 is provided in the region 106 with a security element 5 (Moire magnification arrangement) and in the area 102 with a security element 6, eg a foil security strip with hologram, equipped, and the second surface 4 is provided in the area 204 with an interference layer security element 7.
  • the substrate 2 has a through opening 9, which is closed by means of a transparent film 8 with a see-through hologram.
  • the see-through hologram is visible on both surfaces, that is to say it is located virtually simultaneously in the region 104 and in the region 202.
  • the banknote substrate 2 on the first surface 3 and / or second surface 4 has coatings, imprints and further documents typical of value documents Element may, for clarity in Fig. 4 and the remaining figures of this application are not shown.
  • the substrate 2 may be both a paper-based substrate, particularly a cotton paper substrate, or a composite film substrate or polymer substrate mentioned above.
  • the film 8 would still be covered on both sides with the film of the film composite structure.
  • a transparent area corresponding to the continuous opening with transparent foil 8 would be provided by the fact that the polymeric substrate does not have an opaque coating in the area of the intended see-through area.
  • the primer layer 30 consists in the illustrated embodiment of a physically drying paint composition, for example, in a coating weight from about 1 g / m 2 to 6 g / m 2 (dry) is applied.
  • the primer layer 30 is dried and then applied to its surface 31, a layer 20 of UV varnish.
  • the layer 20 forms the later second protective layer and is currently still in its liquid phase 25.
  • the UV coating is preferably applied at a coating weight of about 0.5 g / m 2 to 7 g / m 2 .
  • a UV varnish preferably also with a coating weight of about 0.5 g / m 2 to 7 g / m 2 .
  • This UV varnish is in its liquid phase 15 and later forms the first protective layer 10.
  • the layers 10, 20 and 30 are each applied over the entire surface, so that they the entire substrate surfaces including the security elements and optionally arranged on the substrate and in the Cover figures not shown layers.
  • the UV coating layers (liquid phases 15, 25) is irradiated with UV radiation.
  • regions with different degrees of gloss or non-frosted areas should be produced in the protective layers 10, 20 that form.
  • the first protective layer 10 should not be matted in the areas 102, 106 which are located above the security elements 6, 5 so as not to impair their visual perceptibility.
  • the region 104 a very large degree of gloss is to be realized, just as in the region 202 of the second protective layer 20 to be formed.
  • the second protective layer 20 should not be matted so as not to impair the optical perceptibility of the interference layer security element 7 affect.
  • a strong matting is to be formed, ie, a low degree of gloss is generated to give the banknote 1 an uncoated appearance.
  • the UV varnish of the first protective layer 10 and the UV varnish of the second protective layer 20 are now irradiated with excimer radiation of a wavelength of 222 nm. However, the irradiation is not performed over the entire surface, but all areas that should not be given a strong matting are shielded by means of masks 40. Therefore, only the regions 101, 103, 105 and 107 of the first resist layer 10 and the regions 201 and 203 of the second resist layer 20 are irradiated by excimer radiation.
  • the result of the irradiation is in Fig. 6 shown.
  • the irradiation initiates polymerization and crosslinking of the UV lacquer layers, with the short-wave excimer photons only being able to penetrate into the lacquer layers by about 100 nm. Therefore, the polymerization and crosslinking take place only superficially. It forms a "skin" that floats on the still liquid phase under it.
  • the crosslinking leads to shrinkage stresses, which cause a folding of the skin formed.
  • This photochemical microfolding leads in the first protective layer 10 to regions having a coarsely structured folding skin 17 and in the protective layer 20 to regions having a coarsely structured folding skin 27.
  • the folding skin 17 floats on the liquid phase 15 and the folding skin 27 floats on the liquid phase 25 In the regions 102, 104 and 106 of the first protective layer 10, and in the regions 202 and 204 of the second protective layer 20, the UV lacquer is still liquid in each case.
  • Fig. 8 The further procedure is in Fig. 8 shown.
  • the product out Fig. 6 is now irradiated with long-wave UV radiation, for example with a wavelength of 365 nm.
  • the area 104 of the first protective layer 10 and the area 202 of the second protective layer 20 are covered with masks 40.
  • the long-wave UV radiation penetrates into the UV coating layers 10, 20 in the areas not masked with masks 40 and hardens them.
  • Fig. 9 shown.
  • the first protective layer 10 is not cured only in the area 104 (liquid phase 15) and the second protective layer 20 is not cured only in the area 202 (liquid phase 25).
  • the first protective layer 10 is through hardened (hardened phase 18) and has a coarse microstructure structure 14 in the areas 101, 103, 105 and 107, while in the areas 102 and 106 there is no microstructure, but a smooth surface 12.
  • the second protective layer 20 is through-hardened in the regions 201, 203 and 204 (hardened phase 28), having a coarse microstructure 24 in the regions 201 and 203, while the surface region 22 is smooth and shiny.
  • FIG. 9 This in Fig. 9 product obtained is then irradiated again with excimer radiation, but with a wavelength of 172 nm.
  • a folding skin is now also produced in the region 104 of the first protective layer 10 and in the region 202 of the second protective layer 20, as in FIG Fig. 10 is shown.
  • the folding skin 16 of the first protective layer 10 and the folding skin 26 of the second protective layer 20 are significantly finer and flatter than the folding skin 17 and the folding skin 27 in FIG Fig. 8 , Below the folding skin 16 there is still a liquid region 15 and below the folding skin 26 there is still a liquid region 25.
  • Fig. 10 now fully irradiated with long-wave UV radiation, for example with a wavelength of 365 nm.
  • the result is in Fig. 11 shown.
  • the protective layer 10 is now fully through hardened (hardened phase 18) and has smooth, glossy surface areas 12 over the security elements 6, 5, which do not affect their optical detectability, but on the contrary emphasize their striking shine.
  • the region 104 of the protective layer 10 above the see-through hologram 8 is slightly matted because of its finely structured surface 13, and the regions 101, 103, 105 and 107 are heavily matted because of their coarsely structured surface 14.
  • the second protective layer 20 is not matted in the area 204 above the security element 7 because of its smooth surface 22, but shiny, slightly matted in the area 202 because of its finely structured surface 23, and in the areas 201 and 203 because of the coarse textured surface 24 heavily matted.
  • This in Figure 11 Product shown is identical to the one in Fig. 2 banknote 1.
  • Paper substrates such as the substrate 2 shown in the figures are not transparent, but there are also transparent substrates, for example, polymer substrates. In such transparent substrates, it is useful to provide protective layers that are very heavily matted to give the substrates a paper-like appearance. However, since the security elements of transparent substrates can be perceived from both surfaces, it may be useful in some cases, for example in transparent holograms, to make the protective layers on both sides of the security elements smooth and shiny.
  • the gloss values can be determined according to DIN 67530, DIN 53778, DIN EN 13300, according to ISO 2813, according to ASTM E 523 and according to BS 3900 Part D 5.
  • DIN EN 13300 a surface with a gloss level of less than 10 gloss points and a measuring angle of 85 ° is called “matt”. Due to the very different classification according to different standards into “matt” and “glossy” surfaces with intermediates, the stated value should only be used by way of example and for the terms used in the present application, such as “matt”, “matting”, “glossy”, “gloss "only serve as a rough guide. In the context of the present application, a "large” degree of gloss is used if the degree of gloss is more than 20 gloss points, measured in accordance with DIN EN 13300 (measuring angle 85 °).
  • the in Fig. 6 irradiated with excimer radiation having a wavelength of 222 nm, wherein the areas 102,106 and 204 are covered with masks 40.
  • a folding skin 16 or a folding skin 26 is produced in the regions 104 and 202.
  • the entire surface is irradiated with long-wave UV radiation having a wavelength of, for example, 365 nm, wherein the in Fig. 11 obtained end product is obtained.
  • the in Fig. 5 shown product in the areas 101, 103, 105, 107 of the first protective layer 10 and in the areas 201 and 203 of the second protective layer 20 with excimer radiation of a wavelength of 222 nm (first irradiation wavelength) irradiated.
  • the region 104 of the first protective layer 10 and the region 202 of the second protective layer 20 is irradiated with excimer radiation of a wavelength of 172 nm (second irradiation wavelength).
  • the result is in Fig. 7 shown.
  • a coarsely structured folding skin 17 has formed, and in the region 104 of the first protective layer 10 a finely structured folding skin 16 has formed.
  • the paint In areas 102 and 106 of the first protective layer 10, the paint is still liquid. Even in the areas under the folding skin, the paint is liquid, and the folding skin floats on a liquid paint film.
  • the second lacquer layer 20 In the regions 201 and 203 of the second lacquer layer 20, a coarsely structured folding skin 27 has formed, and in the region 202 of the second lacquer layer 20, a finely structured folding skin 26 has formed. In the region 204, the second lacquer layer 20 is still liquid, as well as in the areas under the folding skin 26, 27, which floats on a liquid coating film.
  • FIGS. 12 to 14 show in each case schematic plan views of a banknote 1 with design elements according to the invention, in which matt / gloss differences are used to produce a connection between different security features.
  • the banknotes 1 of FIGS. 12 to 14 each have a protective layer on the surface shown, the surface of which for the most part has a coarsely structured microstructure structure 14. In these areas, the surface of banknote 1 appears dull.
  • the banknotes 1 also each have a security element 6 and a circular imprint 32, wherein the circular imprint 32 is partially on the security element 6.
  • the protective layer in the area of the security element 6 largely a smooth surface 12, so that the security element is very visible underneath.
  • the protective layer is also matted in the area of the security element 6, wherein the matting may be the same as in the other matted areas of the banknote.
  • the protective layer has a finely structured microstructure structure 13 in the area of the imprint 32, so that the matting is weaker in this area than in the areas with coarser textured protective layer surfaces 14.
  • Fig. 13 shows the same banknote 1 as Fig. 12 , but unlike Fig. 12 the protective layer in the region of the imprint 32 is not matted but has an unstructured, smooth surface 12. The imprint 32 is thus highlighted by a glossy surface of the protective layer.
  • Fig. 14 again shows a banknote 1 as in the FIGS. 12 and 13 , where in the in Fig. 14 illustrated embodiment, the protective layer in the region of the imprint 32 is structured differently.
  • the surface of the protective layer In the area of the imprint 32 which is located above the security element 6, the surface of the protective layer has a roughly structured area 14, while in the area which is not above the security element 6 it has a smooth, gleaming area 12.
  • the imprint 32 is partially covered over the security element 6 by a matting, while being emphasized and highlighted in the area outside the security element by the shiny surface.
  • the value documents according to the invention have a number of advantages. They are efficiently protected on both sides by protective layers which completely cover their surfaces, so that they have very good dirt-repellent properties and a high circulation time. At the same time they have an attractive, matte look that makes them seem unpainted, and a feel that you would expect in an uncoated document of value. Nevertheless, the verifiability of even optically demanding security elements is in no way impaired by the matt protective layer, since the protective layer can be formed free from matting, especially in the area of the security elements. Rather, the security elements can be visually highlighted by glossy protective layer areas, or be aligned by very light matting to the usually more frosted environment to some extent with respect to their visual appearance. As a result, the security against counterfeiting is advantageously increased.
  • the matting of the protective layer can be achieved without the use of matting agents, which has a favorable effect on the processability of the protective coatings and the feel of the finished documents of value. It is also particularly advantageous that the degree of gloss of the coated surfaces can be set as desired over a wide range and different levels of gloss can be achieved on one and the same surface.
  • Partially hardened first protective layer is Partially hardened
  • Partially cured second protective layer

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Claims (14)

  1. Document de valeur qui comporte une substrat étendu ayant une première surface et une deuxième surface, cependant que
    - la première surface et/ou la deuxième surface du substrat étant pourvue d'au moins un élément de sécurité,
    - la première surface comportant une première couche de protection consistant en un vernis durcissable par UV, et la deuxième surface comportant une deuxième couche de protection consistant en un vernis durcissable par UV,
    - la première et la deuxième couche de protection recouvrant le au moins un élément de sécurité et la première et la deuxième surface du substrat essentiellement à pleine surface,
    - la première couche de protection comportant une première surface et la deuxième couche de protection comportant une deuxième surface,
    - la première couche de protection et/ou la deuxième couche de protection comportant au moins une zone rendue mate et au moins une zone non rendue mate ou bien des zones à degrés de brillance différents,
    - le au moins un élément de sécurité étant recouvert d'une zone de couche de protection non rendue mate ou d'une zone de couche de protection à degré de brillance élevé,
    caractérisé en ce que
    la première surface de couche protection et/ou la deuxième surface de couche de protection comporte au moins une zone avec structure à microplissage et au moins une zone sans structure à microplissage ou bien des zones ayant différentes structures à microplissage, ce par quoi la au moins une zone de couche de protection rendue mate et la au moins une zone de couche de protection non rendue mate ou bien les zones de couche de protection à degrés de brillance différents sont générées.
  2. Document de valeur selon la revendication 1, caractérisé en ce que l'élément de sécurité comporte une ou plusieurs caractéristiques de sécurité choisies dans le groupe de composés constitué d'hologrammes, de structures de diffraction ressemblant à des hologrammes, de motifs de diffraction, de structures à effet de changement des couleurs par basculement, de kinoformes, de structures à effets de dispersion isotropes ou anisotropes ou autres effets d'interférence, d'éléments en couche mince, de structures mates, de structures à microlentilles telles que dispositifs de grossissement par effet de moiré, dispositifs de grossissement du type moiré, dispositifs de grossissement modulo et éléments de sécurité en transmission.
  3. Document de valeur selon la revendication 1 ou 2, dans lequel le vernis durcissable par UV est un vernis à réticulation radicalaire ou cationique, de préférence un vernis contenant des prépolymères qui sont fonctionnalisés avec des groupes d'acrylates, de vinyles ou d'époxy, particulièrement de préférence avec de 0 pourcent par poids à 95 pourcent par poids de diluant réactiv.
  4. Document de valeur selon une des revendications de 1 à 3, caractérisé en ce que, pour l'amélioration de l'adhérence de la première et/ou de la deuxième couche de protection, il est, sur le substrat et/ou sur les couches ou éléments de sécurité agencés sur le substrat, prévu une couche d'apprêt entre la première et/ou la deuxième couche de protection et le substrat et/ou les couches ou éléments de sécurité agencés sur le substrat.
  5. Document de valeur selon la revendication 4, caractérisé en ce que la couche d'apprêt est fabriquée à partir d'une composition à séchage physique.
  6. Document de valeur selon la revendication 5, caractérisé en ce que le vernis durcissable par UV et/ou la composition à séchage physique est transparent ou au moins translucide.
  7. Document de valeur selon une des revendications de 1 à 6, caractérisé en ce que, entre au moins une zone rendue mate de la première et/ou de la deuxième couche de protection, et le au moins un élément de sécurité, il y a un rapport de sens.
  8. Document de valeur selon une des revendications de 1 à 7, caractérisé en ce qu'au moins 70%, de préférence au moins 80% et tout particulièrement de préférence au moins 90% de la surface de la première et/ou de la deuxième couche de protection sont rendue mats.
  9. Procédé de fabrication d'un document de valeur, comportant les étapes de procédé suivantes:
    - mise à disposition d'un substrat étendu ayant une première surface et une deuxième surface,
    - prévision d'au moins un élément de sécurité sur la première surface et/ou sur la deuxième surface du substrat,
    - fabrication d'une première couche de protection consistant en un vernis durcissable par UV sur la première surface du substrat, et d'une deuxième couche de protection consistant en un vernis durcissable par UV sur la deuxième surface du substrat, de telle sorte que la première et la deuxième couche de protection recouvrent le au moins un élément de sécurité et la première et la deuxième surface du substrat essentiellement à pleine surface, la première couche de protection et/ou la deuxième couche de protection comportant au moins une zone rendue mate et au moins une zone non rendue mate ou bien des zones à degrés de brillance différents, et le au moins un élément de sécurité étant recouvert d'une zone de couche de protection non rendue mate ou d'une zone de couche de protection à degré de brillance élevé,
    caractérisé en ce que
    la au moins une zone rendue mate ou bien les zones à degrés de brillance différents de la première couche de protection et/ou de la deuxième couche de protection sont générées, ce qui a lieu en ce que, en au moins une zone de surface de la première et/ou de la deuxième couche de protection, une structures à microplissage est formée, ou en ce que, en des zones de surface de la première couche de protection et/ou de la deuxième couche de protection, différentes structures à microplissage sont formées.
  10. Procédé selon la revendication 9, caractérisé en ce que la première et/ou la deuxième couche de protection est fabriquée en tant que couche combinée ayant une couche d'apprêt entre le substrat et/ou entre des couches ou éléments de sécurité agencés sur le substrat et la première et/ou la deuxième couche protection.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que la première et/ou la deuxième couche de protection sont fabriquées à partir du même vernis durcissable par UV ou à partir de différents vernis durcissables par UV, le vernis durcissable par UV étant appliqué sur la première surface de substrat et la deuxième surface de substrat ou sur une couche d'apprêt sèche sur la première et/ou la deuxième surface de substrat et étant durci par irradiation en deux paliers avec rayonnement UV monochromatique de différentes longueurs d'ondes.
  12. Procédé selon une des revendications de 9 à 11, caractérisé en ce que la structure à microplissage est générée en au moins une zone de surface de la première et/ou de la deuxième couche de protection, ou les différentes structures à microplissage sont générées en différentes zones de surface de la première et/ou de la deuxième couche de protection par durcissement à deux paliers de la première et/ou de la deuxième couche de protection, cependant que
    - lors de la première étape de durcissement, seulement les zones de surface de la première et/ou de la deuxième couche de protection en lesquelles la structure à microplissage doit être générée sont irradiées avec un rayonnement monochromatique V-UV ou avec un rayonnement monochromatique UV-C, ou
    - lors de la première étape du durcissement, une première partie des zones de surface de la première et/ou de la deuxième couche de protection en lesquelles différentes structures à microplissage doivent être générées est irradiée avec un rayonnement monochromatique V-UV ou UV-C sous de premières conditions d'irradiation avec une première longueur d'ondes d'irradiation, tandis qu'une deuxième partie des zones de surface de la première et/ou de la deuxième couche de protection en lesquelles différentes structures à microplissage doivent être générées est irradiée avec un rayonnement monochromatique V-UV ou UV-C sous de deuxièmes conditions d'irradiation avec une deuxième longueur d'ondes d'irradiation et
    - lors de la deuxième étape de durcissement, la première et/ou la deuxième couche de protection est irradiée à pleine surface avec un rayonnement monochromatique UV d'une longueur d'ondes de 200 nm à 500 nm, de préférence de plus de 350 nm afin de durcir la première et/ou deuxième couche de protection dans les zones de surface non irradiées lors de la première étape de durcissement et de les durcir entièrement dans les autres zones, lors de quoi, dans les zones de surface de la première et/ou de la deuxième couche de protection non irradiées lors de la première étape de durcissement, les zones de couche de protection non rendues mates sont engendrées.
  13. Procédé selon la revendication 12, caractérisé en ce que, lors de la première étape de durcissement, ce n'est l'irradiation que d'une partie des zones de surface de la première et/ou de la deuxième couche de protection qui est effectuée avec un rayonnement monochromatique V-UV ou UV- C, ce qui a lieu en ce que les zones devant être irradiées sont soit irradiées de façon ciblée, ou en ce que la première et/ou la deuxième couche de protection est essentiellement irradiée à pleine surface, les zones ne devant pas être irradiées de la première et/ou de la deuxième couche de protection étant protégées par un masque ou un panneau.
  14. Procédé selon une des revendications de 9 à 13, caractérisé en ce qu'un document de valeur selon une des revendications de 1 à 8 ou une feuille à documents de valeur ou un matériau sans fin à documents de valeur comportant une pluralité de documents de valeur est fabriqué selon une des revendications de 1 à 8.
EP13002290.8A 2012-05-04 2013-04-29 Documents de valeur avec revêtement de protection et leur procédé de fabrication Not-in-force EP2660067B1 (fr)

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