EP2367692A1 - Wertdokument mit matten und glänzenden oberflächenbereichen und verfahren zu seiner herstellung - Google Patents
Wertdokument mit matten und glänzenden oberflächenbereichen und verfahren zu seiner herstellungInfo
- Publication number
- EP2367692A1 EP2367692A1 EP09752874A EP09752874A EP2367692A1 EP 2367692 A1 EP2367692 A1 EP 2367692A1 EP 09752874 A EP09752874 A EP 09752874A EP 09752874 A EP09752874 A EP 09752874A EP 2367692 A1 EP2367692 A1 EP 2367692A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- areas
- value
- document
- substrate
- 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.)
- Granted
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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
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- 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
Definitions
- the invention relates to a document of value, such as a banknote or an identification document, which has a flat substrate, is provided on at least one surface with an anti-counterfeiting agent and has a coating on at least the surface provided with the anti-counterfeiting means or on one of the surfaces provided with anti-counterfeiting means matt areas and shiny or non-matt areas.
- a glossy finish reveals the coating surface where it covers the anti-counterfeiting agent while displaying a dull appearance in the remaining areas.
- the invention also relates to a method for producing such a document of value with matt and glossy surface areas.
- the invention relates to value-document sheets and value-document endless materials with a multiplicity of individual value documents according to the invention and to methods for their production.
- Anti-counterfeiting devices are security elements, such as security threads, window security threads, film applications that have a transparent or metallized Absolutgesto- logramm, blind embossing, printing or printing and embossing technology produced "latent images” that reflect different information from different viewing angles, imprints, the optically variable pigments and appear at different viewing angles in varying colors, or imprints of metal effect colors that shine metallic, for example in gold, silver or bronze tones.
- windows holes, which be closed by means of a transparent or partially transparent film or alternatively transparent films which are only partially provided with an opaque coating
- the windows are often combined with additional security elements, for example, with safety elements to be tested in transmitted light.
- 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.
- the coatings should preferably provide a matte surface appearance, since dull coatings do not adversely affect the visual appearance of a value document, as opposed to very smooth coatings, provide a better grip to the document of value when dropped, stacked and gripped, thereby causing slippage of the stacked sheets Avoid transport processes (influenced by static and sliding friction), and also facilitate the mechanical inspection of the safety elements.
- a security element which is surrounded by a matt coating, is easier to detect because of the much lower reflections from optical sensors or is not disturbed by highlights.
- Value documents with paper substrate are often printed by intaglio printing.
- WO 02/094577 proposes a still unprinted or already printed security on at least one side with a Protective layer, which is formed by a matt lacquer or a thin plastic film with a matte surface, said protective layer in the region of a security element interrupted, ie recessed, is.
- a Protective layer can be applied, which consists of a gloss varnish.
- the protective layer of gloss varnish is particularly recommended for security elements which are subject to heavy soiling and / or significant abrasion without coating, for example metallic effect color imprints, blind embossing and printing "latent images".
- the successive varnishes with a matt varnish and a gloss varnish must be as accurate as possible, with the part surface recessed in the matt coating being exactly printed with a gloss varnish. For technical reasons, an exact registration is hardly possible, which is why overlapping is used, with an overlap zone is desired, which is not greater than about 2 mm.
- aqueous dispersions or radiation-curing systems are used as matt paints or gloss paints.
- the paints are applied by flexographic printing or screen printing.
- the flexographic printing process is a printing process that works well for large, high-speed presses and high throughputs of substrate.
- flexographic printing plates are flexible, and due to this flexibility, it is not possible to achieve an absolutely precise, register-accurate print image. Furthermore, the resolution of the flexographic printing process is significantly lower than, for example, offset printing. Because flexographic printing is a direct printing process (ie it is transferred from the printing plate directly to the substrate drive (ie it is printed by the printing plate directly on the substrate) is also the surface texture in the print quality. In addition, the flexographic printing plates consist of polymers that tend to swell (caused by the ingredients of the paint), so that a constant adjustment of the contact pressure is required, resulting in high downtime. The plates also wear out quickly and are comparatively expensive. However, an offset printing process is less suitable for the UV varnishes printed because the transferable layer thickness is lower.
- the present invention is based on the object value documents with anti-counterfeiting agents with a matted coating, preferably a heavily frosted coating, but at least at the points where anti-counterfeiting agent are located, non-dull, d , H. shiny, has areas to provide.
- the object of the invention is also to provide a method for producing such value documents.
- the disadvantages of the prior art should be avoided. In particular, it should be avoided that the coating must be composed of matt and glossy subregions, which must be printed in each case in exact registration with each other.
- the object of the present invention is, in particular, the coating of banknotes with optically perceivable security elements and / or windows, ie recesses in the substrate.
- the banknotes should be equipped with a heavily matted coating, which is however in the range of Security elements whose visual perceptibility should not be disturbed and / or are shiny or not dull in the area of the window.
- the coating should be suitable for various security substrates, i. H. for paper substrates and in particular also for polymer substrates or film composite substrates. It should not affect the properties of the substrate, which is particularly important in banknotes, protect the coated security and extend its life.
- the value document in particular a banknote, is provided with a "hybrid coating", ie. H. a double layer of two different coating systems.
- a “poorly wettable composition” is a composition suitable for offset printing, ie. H. a special offset printing ink, wherein no or preferably no visually visible colorant is contained, but only binder and the usual additives are included.
- offset printing ink we speak of an "offset printing ink”.
- the offset ink is applied to a layer of an electron beam curing or electromagnetic radiation curing coating system.
- the defined intermediate drying results from the machine speed, the construction of the printing machine (distance to the next printing unit), the impact behavior of the substrate and the composition of the offset ink. Preference is given to UV-curing coating systems.
- the application is made over the entire area, ie both in the areas in which the offset printing ink was previously applied and in the areas of the anti-counterfeiting agents.
- UV varnish is the preferred radiation-curing compositions.
- a water-based paint can also be used instead of the offset printing ink. This should hinder the wetting by the jet-drying lacquer by adding wetting-disturbing ingredients, as they are known to a person skilled in the art. This can also be controlled by an incomplete physical drying, wherein in the case of a water-based paint, the provision of a drying unit may be useful. Drying is influenced by the volume flow of the hot air, the power of the IR emitter, the design of the dryer, the impact behavior of the substrate and the paint formulation.
- the reason for the formation of dull and non-dull, ie shiny, areas lies in the different wettability of the substrate to which the UV varnish is applied.
- the poor wettability or wetting disorders are achieved according to the invention in two ways, which are preferably used in combination: on the one hand by the choice of a suitable composition of the offset printing ink, and on the other by the choice of the appropriate application time of the UV varnish and a suitable composition of the UV varnishes.
- Offset inks inherently have the property of being difficult to wet by UV varnishes; Therefore, typically, in offset printing with in-line coating when using UV varnishes, a water-based primer is applied to the oxidatively drying inks and dried in order to achieve adequate wetting of the UV varnish. In the present case, however, no good wetting is desired.
- Offset inks contain colorants in the form of organic or inorganic pigments or dyes (preferably not present in the present invention), binders and additives such as driers, mineral oil, wax dispersions and other additives known to those skilled in the art.
- the binders typically consist of phenol-modified rosin resins, hydrocarbon resins, linseed oil standing oils, mineral oils and linseed oil.
- the drying takes place physically (by evaporation of the mineral oils, by knocking low-molecular oils or binders into the substrate or the ink-accepting layer of the substrate) and / or oxidatively.
- the exact composition of the offset ink takes place.
- the interfacial tension of the substrate to be printed must be greater than that of the paint or the lacquer in order to allow a good trouble-free wetting.
- non-polar films such as polyethylene or polypropylene
- the adaptation takes place, for example, by corona, plasma or gas flame treatment of the substrate surface or by means of primer application on the substrate surface.
- the offset inks used are made up (all percentages here and below are by weight):
- the offset printing ink used is an oil-based printing ink of the following composition: - 20% to 75% of binder 1 (Printorob AL 399) of crude oil (modified isophthalic alkyd resin) dissolved in mineral oil and linseed oil,
- binder 2 (Bremapal 2150) from Kraemer (phenolic resin-modified rosin ester) dissolved in mineral oil and linseed oil,
- micronized polyethylene wax or PTFE wax (10 to 20 ⁇ m D90)
- Another alternative example of an offset printing ink is a low-yellowing oil pressure varnish of the following composition:
- binder 1 Print AL 399 of crude oil (modified isophthalic alkyd resin) dissolved in mineral oil or ester
- binder 2 (Bremapal 2150) from Kraemer (phenolic resin-modified rosin ester) dissolved in mineral oil or ester,
- micronized polyethylene wax or PTFE wax (10 ⁇ m to 20 ⁇ m D90), - 0.1% to 0.5% dry matter Octa-Soligen Cobalt 8% from OMG,
- the oil-based varnish is thus made of hard resin (for example phe nolharz-modified hydrocarbon resins), alkyd resins (for example Leinölal- alkyd resins), mineral oil (boiling range 200 0 C to 360 0 C), vegetable oils (linseed oil, tung oil, etc.) , Siccatives (cobalt / manganese octoates) and auxiliaries, such as waxes (eg micronized PE and / or PTFE waxes), to improve the abrasion resistance.
- the proportion of vegetable oils, alkyd resins and the concentration of siccatives Controlled yellowing: the lower the proportion, the lower the yellowing, due to cleavage products, which arise during the oxidative drying.
- the lacquer used shows the lowest possible yellowing with high chemical and physical resistances, as they are usually required by banknotes.
- blue pigment pigment e.g., Blue 15: 3, phthalocyanine pigment
- the pigment concentration is then 0.05% to 0.2%
- the poor wettability of the offset inks can be promoted by suitable variations of the composition of the offset inks.
- the surface tension of the oil pressure varnish can be further reduced, for example, by adding 0.5% to 4% of silicone oil in order to enhance the repellent effect of the subsequent gloss varnish.
- the compatibility of the binder is the dissolving power of the resin by the solvent used, e.g. Mineral oil, understood.
- Another way of delaying the physical drying is by a higher proportion of vegetable oils, such as linseed oil, soybean oil or wood oil, which dry only oxidatively, and / or a use of higher boiling mineral oils (eg mineral oils with a boiling range of 210 0 C to 280 0 C replaced by mineral oils with a boiling range of 280 0 C to 360 0 C or by mineral oils with a higher aromatic content).
- vegetable oils such as linseed oil, soybean oil or wood oil
- mineral oils eg mineral oils with a boiling range of 210 0 C to 280 0 C replaced by mineral oils with a boiling range of 280 0 C to 360 0 C or by mineral oils with a higher aromatic content.
- Suitable offset printing inks are available, for example, from Epple (article Nos. 1290-03 or 1523).
- water-based paints or dispersion paints can also be used.
- lacquers if not sufficiently dried, also result in a wetting disturbance of the UV lacquer.
- the physical drying of the water-based paint can for example be controlled or extended by the parameters of the drying unit (volume flow for hot air, IR emitter power) and / or by substitution of water by glycol.
- the lacquer can be provided with hydrophobic groups or hydrophobic particles (for example wax particles-paraffin or carnauba wax-or micronized PE, PTFE, etc.), which accumulate distributed on the surface and thus lead to partial repulsion.
- offset printing inks with and without visually invisible colorants such as, for example, luminescent substances, and water-based lacquers with and without visually invisible colorants are difficultly wettable compositions in the context of the present invention.
- the offset printing ink or the water-based paint can also be printed as a fine grid in order to produce spots with partially good and poor wettability by the UV varnish.
- This makes it possible, for example, (2013), (2013).
- This can be at individual forgery-proof features, such as For example, a hologram patch, be advantageous to better conceal Pcorroschwankept the patch.
- the UV varnish or generally the radiation-curable composition
- Particularly suitable UV lacquers are free-radical lacquer systems with the following composition:
- such a radical paint system has the following composition:
- polyester acrylate e.g. Laromer PE 55 F from BASF
- an acrylic acid ester e.g. Laromer HDDA from BASF
- a photoinitiator e.g. Darocure 1173 of the company CIBA
- a reactive amine as a drying accelerator eg Ebecryl P 115 from UCB
- a silicone-based antifoam eg Coatosil 100 E, which may optionally be omitted in order to enhance the wetting disturbance according to the invention to the offset ink
- an anti-slip agent e.g. Dow Corning 57 from DOW.
- photoinitiators When choosing photoinitiators, it should be noted that any safety features based on fluorescent substances will not be disturbed. Therefore, photoinitiators are preferred which absorb in the short-wave (200 nm to 279 nm) and in the medium-wave (280 nm to 330 nm) UV range. To ensure good or sufficient drying of the coatings, it makes sense to use the emitters of the UV drier on the wavelength range of the photoinitiators used.
- Suitable UV lacquers are offered, for example, by Vegra under the item number VP 1038/050 (high-gloss UV lacquer based on a free-radically polymerizing acrylate system).
- the UV varnish is applied directly to the not yet fully dried offset printing ink. Preference is given to using a UV varnish which contains no wetting aids, such as silicone oils or wetting agents.
- UV varnishes are repelled by not yet dried offset printing inks, whereby the extent of the repulsion can be influenced by the degree of drying. Therefore, to achieve a defined repulsion, and thus to achieve a defined degree of matting, a defined intermediate drying of the offset printing ink is provided.
- This requires an in-line coating, ie one On printing of offset printing ink and UV varnish in one pass, preferably in a Bogenlackiermaschine in this way stable, reproducible results are obtained.
- the manufacturing process is performed as follows:
- the coating is preferably not carried out on individual value documents, but on value document sheets or on continuous value document webs, each with a plurality of individual value documents.
- the offset printing ink is applied, depending on the wetting properties of the substrate, on the untreated surface or optionally on a wetting-promoting pretreated substrate surface.
- the type of application of the offset ink is arbitrary, but since typically large amounts of large format sheets or continuous materials are to be printed, preferred are those which are suitable for high-speed, large printing presses. For this purpose, high pressure, indirect high pressure, flexo printing and offset printing are suitable.
- the application in the offset printing method is preferred because the offset printing is more precise than the flexographic printing due to the rigid printing plate and thus a better registration accuracy can be achieved. In addition, there is little risk of producing pinch edges.
- the application of the offset printing ink is carried out with register accuracy limited to the areas which should show a matt surface as a result.
- the ink application of the offset printing ink is preferably in a range from 0.5 g / m 2 to 3 g / m 2 , particularly preferably in a range from 0.8 g / m 2 to 1.2 g / m 2 .
- drying is carried out exclusively by the displacement of low molecular weight oils or binders in the substrate or in the ink receiving layer of the substrate, oxidatively, or by the evaporation of solvents. Active drying by hot air or IR radiation is usually not required.
- the UV varnish is applied inline to the intermediate dried offset printing ink.
- the optimum application time is determined in each case by preliminary preliminary experiments, depending on the compositions of the offset printing ink and the UV varnish, the layer thickness of the offset printing ink and the degree of desired mattness.
- the type of application of the UV varnish is basically arbitrary, but off-set printing and flexographic printing are preferred. Particularly preferred is the fast flexographic printing process.
- the disadvantages associated with the flexographic printing process such as lack of precision in the case of the required passergenauem lacquer application due to the flexible printing plate, the swelling of the printing plate by UV coatings, etc. pose no problem here, since the coating is applied over the entire surface and printed on a blanket on the substrate can.
- the squeezing edges that occur in flexographic printing are also no problem with full-surface application.
- the application of the UV high-gloss lacquer is therefore preferably by means of a flexographic printing unit, more preferably via an anilox roller in the chambered doctor blade system onto a photopolymer plate (flexographic printing plate, eg Gold A from Flintgroup) or a stripped or partially (in the region of the surface to be coated) underlayed blanket is printed on the substrate.
- the paint application is in the range of 1 g / m 2 to 4 g / m 2 , preferably in the range of 1.5 g / m 2 to 3 g / m 2 , depending on the scoop volume of the grid roller used (theoretical scoop volume of 6 g / cm 3 to 16 g / cm 3 , grid structure ART or Haschuren, etc.), the temperature-dependent rheology of the paint, the machine speed and the surface tension of the paint and the substrate to be coated.
- the drying is carried out by means of UV radiation or with another suitable radiation, if no UV-radiation-curing lacquer was used.
- the drying of the offset ink is finally carried out by oxidative drying and only to a small extent by further knocking off mineral oil.
- FIG. 2 shows a sectional view of the value document shown in FIG. 1 along the line AA 1 , FIG.
- 3a is a photomicrograph of an uncoated banknote with polymer substrate
- Fig. 3b is a light-optical micrograph of coated with a high-gloss UV varnish banknote of Fig. 3a, and
- FIG. 3c is a photomicrograph of the banknote of FIG. 3a equipped with a coating according to the invention.
- FIG. 1 is a plan view of a value document 1 according to the invention, in the figure a banknote.
- the document of value has counterfeit protection means in the form of a hologram foil patch 10 and a window 12 on its surface visible in FIG.
- the areas 18 of the banknote surface are coated with offset printing ink and UV varnish and show a matt surface appearance.
- the areas 19 of the banknote surface, ie the areas where the counterfeit protection means 10 and 12 are located, are only coated with UV varnish and have a glossy surface appearance.
- FIG. 2 is a sectional view of the banknote shown in plan view in FIG. 1 along the line AA 1 .
- the value document 1, in the present case a banknote has a cotton-based substrate 2.
- Alternative substrate variants are plastic materials with opaque color adhesive layers partially applied symmetrically on both sides of the substrate, paper and composite materials, ie multilayer substrates comprising layers of plastic and paper, or hybrid-like substrates with nonwoven layers containing both pulp or cotton fibers and plastic fibers.
- the substrate 2 has as one of the anti-counterfeiting means a window 12 which, in the embodiment shown, is closed by a transparent plastic film 3 integrated into the substrate 2.
- the plastic film 3 could also extend over the entire surface of the substrate.
- a security element 10 with a hologram is glued onto one of the surfaces of the substrate 2.
- a print 9 in the form of a lettering, a pictorial representation, a pattern or any other representation that is to be well perceived by a viewer.
- the banknote 1 is now to be provided with a matt coating over the entire surface, which, however, must not impair the transparency of the window 12 and the optical perceptibility of the hologram 10 and the imprint 9. In the areas of the imprint 9, the hologram 10 and the window 12, the coating must therefore not be dull.
- the two surfaces 4, 4 'of the banknote 1 are each printed with a layer of offset printing ink (eg No.
- the printing takes place in the offset printing process, taking into account the tolerances of upstream process steps, eg application of a patch, as accurately as possible in a precise register in such a way that the entire surface 4, with the exception of those areas in which the hoop 10 and window 12 are printed.
- the layer 15' of offset printing ink is printed in register only in the region of the window 12. In the area of the lettering or other imprint 9, however, a narrow area of the surface 4 'is left around the imprint 9.
- a layer 17 of UV varnish (VP 1038/050 from Vegra) is applied over the entire surface of the layer 15 by flexographic printing.
- the layer 17 is cured by UV radiation.
- the procedure is analogous: After defined intermediate drying of the layer 15 'of offset printing inks, a layer 17' of UV varnish is applied over the full area by flexographic printing and then cured by UV radiation.
- the coating 14 according to the invention consisting of the discontinuous layer 15 and the continuous layer 17 formed on the surface 4 'of the substrate 2, the coating 14' of the invention, consisting of the discontinuous layer 15 'and the continuous layer 17 '.
- the coating 14 has glossy surface areas 19 exactly at the locations where the layer 15 has interruptions 16, that is to say exactly at the locations where the window 12 and the hologram 10 are located, while the remaining areas 18 of the surface appear dull.
- the mattness of the surface areas 18 is due to the poor wettability of the layer 15 located at these locations below the layer 17.
- the coating 14 ' shows glossy surface areas 19 at the locations where the layer 15' has interruptions 16 ''.
- the coating 14' has surface areas 18 'with a matte appearance.
- the glossy surface area 19 ' is above the window 12. It is preferred to provide the coating according to the invention in each case on the entire surface or on both surfaces of a value document. But of course also partial surface coatings of one or both surfaces are possible.
- FIG. 3a shows light micrographs of the surface of a banknote with polymer substrate.
- the banknote is uncoated
- the banknote is coated with a high gloss UV varnish (VP 1038/050 from Vegra)
- the bill is first coated with an offset printing ink (# 1523 from Epple ) and then coated with the high-gloss UV varnish (VP 1038/050 from Vegra).
- the surfaces are significantly different in terms of their structuring.
- the banknote coated according to the invention shown in FIG. 3c has a surface with a coarse worm-like structure, which leads to a strong light scattering and thus to loss of gloss. The light scattering depends on the size and the relief height of the worm structure. Instead of a worm structure, a coarse dot structure can also be formed.
- the gloss values of the uncoated banknote, the banknote coated only with UV varnish and the banknote coated according to the invention were measured in each case.
- the surface to be measured is illuminated at a defined angle and the reflected light is measured photoelectrically.
- the measurements were carried out with a reflectometer at an angle of 60 ° according to DIN 67530, or ISO 2813, ASTM D 523 and BS 3900 Part D5, whereby the gloss values listed in the table below were obtained.
- "Matt” is a gloss value of less than 15%.
- the same measurements were also made on an analog coated banknote with a velin paper substrate. Gloss measurement (60 °) uncoated UV topcoat hybrid coating
- the uncoated substrates have very low gloss values, so both show a dull appearance.
- the substrates coated according to the invention are also matt, the difference to the substrate coated with UV varnish being particularly clear in the case of the polymer substrate.
- the present invention has many advantages over the prior art.
- the coating according to the invention is composed of two individual layers, one of which is continuous, there can be no defects in the coating. There can also be no overlapping of matt and non-matt areas, since it is not necessary to print two different layers one after the other in register, but instead only one of the layers has to be printed precisely in register with the anti-counterfeiting means.
- a very high registration accuracy can be achieved in this printing process, since in the offset printing process, ie with rigid printing plates, can be printed.
- the degree of dullness or, in other words, the gloss value is controllable by the type of offset ink, the layer thickness of the offset ink and the extent of drying of the offset ink prior to application of the UV varnish. Another possibility of the control consists in the omission of leveling and wetting agents in the UV varnish.
- two or more different offset printing inks can be used, which are wetted differently well by the UV varnish, so that different gloss values of the UV varnish result due to the differently pronounced wetting disorders.
- the different offset printing inks are preferably printed in register with each other, i. not printed on top of each other.
- one offset printing ink can be printed in offset printing or in high-pressure printing, and another offset printing ink can be applied in film printing.
- the same effect, ie different gloss values of the UV varnish, can also be achieved with a single offset printing ink if a rastering of the offset printing plate is undertaken.
- the gradations achieved by rastering the offset printing plate in the degree of dullness can be placed over the entire banknote over the whole area or in partial areas. For example, in the area of a window or other anti-counterfeiting agent, as the proximity to the window / anti-counterfeiting agent increases, the gloss can gradually increase. Further, gradations in degree of dullness may represent motives such as micro stars and currency symbols, or micro-typefaces denoting, for example, the bill value or the country.
- very finely resolved matt structures can be realized (by a Scanning of the printing plate by means of dot or line grid). In this way, very finely resolved line structures can be generated, which in turn can be used to achieve moiré effects.
- the very finely resolved matt structures can be recognized by the naked eye or by means of an aid, eg a thread counter or a magnifying glass, via the glancing angle. When the very finely resolved matt structures are applied in a window region of the banknote, they are additionally discernible when looking through the scattering.
- UV lacquers only high-gloss UV lacquers can be used.
- High-gloss paints without matting agent are cheaper and much easier to process than paints with matting agent. They do not tend to separate or settle the matting agents and show a constant viscosity. Furthermore, these paints can be formulated with a lower viscosity.
- the front coating and the back coating of a document of value can be done in the same plant without changing the printing plates.
- the plant will simply set up an offset printing unit for the offset ink with the required cutouts for the front and another offset printing unit for the offset ink with the required recesses for the back.
- the change from front to back coating is done by switching on the first or second set pressure unit. This is the case for machines without a turning device with the following equipment: at least two offset printing units and at least one flexographic printing unit.
- the coating according to the invention can be used very universally. All substrates that can be printed with offset printing inks can be coated. H. Substrates based on paper, based on plastic, combination substrates (paper / plastic mixtures within a layer or multilayer substrates made of different materials), coated and uncoated substrates, flexible or inflexible substrates such. For example ID, credit or debit cards.
- the coating according to the invention does not necessarily have to represent the uppermost layer of a value document. Rather, the coating can also be embedded; For example, it is possible to provide a foil sheathing or to apply a further lacquer layer.
- the coating can also be printed.
- the offset printing ink and the UV varnish are preferably colorless and, apart from the matting, visually invisible. It is also possible to equip offset printing ink and / or UV varnish with additional features, for example a specific color. Offset ink and UV varnish can have the same hue or different hues.
- offset printing ink and / or UV varnish can be provided are, for example, luminescence in different wavelength ranges by addition of suitable luminescent substances, or color plays by addition of pearlescent pigments, thin-layer pigments or liquid crystal polymers.
- the offset printing ink and the UV varnish can be equipped with the same or different characteristics. It is also possible to combine visually visible and visually invisible offset printing inks and / or UV varnishes by using two different printing plates in each case.
- offset printing inks should preferably have no intrinsic color visually.
- at least one of the offset printing inks used may have an additional anti-counterfeiting feature, which is preferably selected from luminescent dyes, thin-layer pigments, liquid crystal polymers, laser-markable substances and dyes.
- the UV high gloss lacquer is designed antimicrobial.
- the present invention makes it possible to provide valuable documents of any type with matt coatings which do not have matt registration in the area of anti-counterfeiting agents but have shiny areas.
- the invention is particularly advantageous for equipping banknotes, in particular banknotes with polymer-based or film-composite banknotes, with a strongly matted coating and in the area of counterfeiting protection means, such as holographic structures and windows, with a non-matted coating.
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Abstract
Description
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810058397 DE102008058397A1 (de) | 2008-11-21 | 2008-11-21 | Wertdokument mit matten und glänzenden Oberflächenbereichen und Verfahren zu seiner Herstellung |
PCT/EP2009/065585 WO2010057995A1 (de) | 2008-11-21 | 2009-11-20 | Wertdokument mit matten und glänzenden oberflächenbereichen und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2367692A1 true EP2367692A1 (de) | 2011-09-28 |
EP2367692B1 EP2367692B1 (de) | 2013-03-27 |
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ID=41606658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09752874A Not-in-force EP2367692B1 (de) | 2008-11-21 | 2009-11-20 | Wertdokument mit matten und glänzenden oberflächenbereichen und verfahren zu seiner herstellung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2367692B1 (de) |
DE (1) | DE102008058397A1 (de) |
WO (1) | WO2010057995A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011100979A1 (de) | 2011-05-10 | 2012-11-15 | Giesecke & Devrient Gmbh | Sicherheitselement und mit demselben ausgestatteter Datenträger |
DE102012004195A1 (de) * | 2012-03-01 | 2013-09-05 | Giesecke & Devrient Gmbh | Verfahren zum Herstellen eines Wertdokuments und daraus erhältliches Wertdokument |
DE102012010534A1 (de) * | 2012-05-29 | 2013-12-05 | Giesecke & Devrient Gmbh | Verfahren zum Herstellen eines Wertdokuments |
MY182933A (en) * | 2012-10-29 | 2021-02-05 | Sicpa Holding Sa | Protective coatings for security documents |
DE102013007998A1 (de) * | 2013-05-08 | 2014-11-13 | Giesecke & Devrient Gmbh | Wertdokumentsubstrat, Wertdokument und Verfahren zum Herstellen eines Wertdokuments |
DE102014010574A1 (de) | 2014-07-16 | 2016-01-21 | Giesecke & Devrient Gmbh | Wertdokument mit Auf-/Durchsichtseffekt |
DE102015210982A1 (de) * | 2015-06-15 | 2016-12-15 | Tesa Scribos Gmbh | Sicherheitsetikett mit Kippeffekt |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10124630A1 (de) | 2001-05-18 | 2002-11-21 | Giesecke & Devrient Gmbh | Wertpapier und Verfahren zu seiner Herstellung |
DE102005003839A1 (de) * | 2005-01-27 | 2006-08-03 | Koenig & Bauer Ag | Sicherheitsmarkierung |
-
2008
- 2008-11-21 DE DE200810058397 patent/DE102008058397A1/de not_active Withdrawn
-
2009
- 2009-11-20 EP EP09752874A patent/EP2367692B1/de not_active Not-in-force
- 2009-11-20 WO PCT/EP2009/065585 patent/WO2010057995A1/de active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2010057995A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2367692B1 (de) | 2013-03-27 |
WO2010057995A1 (de) | 2010-05-27 |
DE102008058397A1 (de) | 2010-05-27 |
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