DE102011108239A1 - Data carrier with tactile security feature - Google Patents

Abstract

The invention relates to a data carrier, in particular value document, such as a banknote, identity card and the like, having a substrate (7) which has at least one tactile detectable security feature (2, 3, 4, 6, 10). According to the invention, the relief height (R0) of the at least one tactile detectable security feature (2, 3, 4, 6, 10) is 10 μm to 180 μm, and the substrate (7) is provided with the at least one tactile detectable security feature (2, 3 , 4, 6, 10) on both sides in each case over the entire surface of a polymeric cover layer (9a, 9b) is covered such that the tactility of at least one tactile detectable security feature (2, 3, 4, 6, 10) is substantially maintained.

Description

The invention relates to a data carrier, in particular a value document, such as a banknote, identification card and the like, with a substrate having at least one tactile detectable security feature.

The invention also relates to a method for producing such a data carrier.

Data carriers, such as security, value or ID documents, but also other valuables, are often provided with security features for security, which allow a verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.

It is known to provide data carriers, in particular value documents, with a tactile detectable security feature. Studies, such as that conducted by the Bank of Canada, have shown that tactility plays an important role in assessing the authenticity of banknotes.

Furthermore, it is known to provide value documents, in particular banknotes, with a substrate material of paper or polymer. However, a disadvantage of these value documents, irrespective of the substrate used, is that, in particular, value documents with high circulation are exposed to considerable wear and contamination, so that the circulation times of these value documents are low. In particular, it is known that substrates made of paper become relatively quickly soiled and become limp due to absorption of moisture, i. H. the typical sound and the typical grip of these substrates are largely lost. On the other hand, substrates made of a polymer material show a very low resistance to tearing, which is why tears must be used to replace damaged substrates.

Based on this, the present invention has the object to further improve data carriers of the type mentioned in terms of their circulation resistance and imitation security and at the same time to obtain as important as possible for the evaluation of the authenticity of banknotes properties as completely.

This object is achieved by the data carrier and the production method having the features of the independent claims.

Further developments of the invention are the subject of the dependent claims.

According to the invention, a generic data carrier, in particular a value document such as a banknote, identity card and the like, comprises a substrate which has at least one tactile detectable security feature, wherein the relief height of the at least one tactile detectable security feature is 10 μm to 180 μm. The substrate with the at least one tactile detectable security feature is covered on both sides in each case over the entire surface of a polymeric cover layer such that the tactility of the at least one tactile detectable security feature is substantially maintained.

According to the invention, the large relief height of the tactile detectable security feature ensures that the consumer can easily check the authenticity of the banknote according to the invention on the basis of the tactile security feature. In this case, the tactility of the at least one tactile detectable security feature is obtained according to the invention, despite the polymeric cover layer applied to the substrate with a tactile security feature on both sides of the entire surface. This finding is surprising to the extent that in the previously known data carriers with tactile security feature by the two-sided coverage of the substrate with a cover layer, the tactility of a security feature arranged on the substrate has been drastically reduced in part.

According to the invention, it is now possible to provide data carriers with a substrate having a tactile security feature and polymeric cover layers arranged on both sides of the substrate, in which the tactility of the tactile security feature is essentially preserved and at the same time the tactile security feature, but also all other security features the data carrier substrate is protected against wear and contamination. In addition, the data carrier is protected against manipulation attempts with the security-relevant features, whereby the imitation security of the data carriers according to the invention is extremely high.

In a preferred embodiment, the tactile detectable security feature of the data carrier has a relief height of 20 .mu.m to 150 .mu.m, preferably from 30 .mu.m to 130 .mu.m, and most preferably from 35 .mu.m to 90 .mu.m. Security features with a relief height of 20 microns to 150 microns allow a good haptic perception by the user of the disk and can be made at the same time by known manufacturing processes for such media. Thus, the disk may have a large number of known tactile security features, whereby the invention is economically very interesting.

Favor has the relief height of the covered by the polymeric cover layer tactile detectable security feature 40% to 100%, preferably 60% to 100% and most preferably 80% to 100% of the relief height of the uncovered security feature on. As already mentioned, maintaining the tactility of the security feature to the greatest extent possible is essential to the present invention. The surprising finding that the tactility of the security feature is substantially preserved by the appropriate selection of tactile security features, covering polymeric layer and corresponding manufacturing parameters will be discussed below for the individual relevant features. Without being bound to an explanation, it is currently believed that the tactility of a high relief height security feature is maintained to a greater extent than is the case with lower relief height security features. For the user of a data carrier according to the invention, the complete or essentially complete preservation of the tactility ultimately means that he can hardly or hardly distinguish between a data carrier with a data carrier without a polymeric cover layer, at least with respect to the haptic detectability of the tactile security feature. Although this ideal case of 100% preservation of the relief height can not always be realized in practice, maintaining tactility of about 80% will also satisfy most users of the data carrier for unique authentication of the tactile security feature.

The tactile detectable security feature is advantageously selected from the group watermark, security thread, foil strip, foil patch, imprint, embossed structure or relief structure generated by the action of electromagnetic radiation. Also so-called security threads, which may be partially or completely embedded in a substrate, are suitable as tactile security features. Below a "film strip" is an elongated and under a "foil patch" a not elongated film element with z. B. circular, elliptical or rectangular outline understood.

An imprint on the substrate of the data carrier or an embossing structure introduced by means of a suitable embossing tool also have a suitable relief for authenticity detection. In the relief structure generated by electromagnetic radiation, it may, for. B. act to a foamable imprint, which expands when exposed to heat to form a relief structure. It is also conceivable in this connection to apply a particularly paper-based substrate to form a relief structure in the areas exposed to radiation.

It is understood that the tactile security feature in the form of a security thread, foil strip or foil patches can have features known per se, in particular a diffraction structure, matt structure, a color shift-effect thin-film arrangement, micromirrors, microlenses and other optically variable features.

In addition, it is understood that any imprint with a relief height of greater than 10 microns can be used as a tactile feature, in particular, an offset, flexo, screen or gravure printing method is suitable. It is z. Example, by means of a screen printing possible to provide a relief on the security substrate, which consists only of a color layer with a thickness of about 10 microns to 30 microns. Such relief structures can be z. B. with UV-drying paints. The relief produced in the screen printing process can in principle be in color or colorless, d. H. be transparent. The imprint may comprise effect colors, which may in particular contain magnetically orientable, metallic or liquid-crystalline pigments. Also conceivable are thermochromic and photochromic materials, wherein all of the abovementioned materials and pigments can also be enclosed in microcapsules.

With a particularly great advantage, the imprint is a gravure printing process, in particular a gravure printing process. In the intaglio printing process, an embossed structure is congruently created in the so-called "ink-carrying" gravure printing to match the imprint. Such a security feature, in which the tactility is formed by the embossed structure produced and the imprint arranged congruently to the embossed structure, has a tactile structure with high stability and durability, which is further improved by the inventively provided cover layer with respect to their circulation resistance. The tactile security features produced in color-guiding intaglio printing have a total relief height of approximately 35 μm to 90 μm for the embossed structure and the imprint, which is particularly advantageous for haptic detection and thus authentication.

It is also conceivable to make the imprint transparent, so that the viewer essentially perceives the embossed structure in the color of the embossed substrate. At the same time, the embossed structure is well protected from external influences by the transparent imprint, which is ensured to an even greater extent by the covering polymeric cover layer.

Of course, it is also conceivable, in the region of a form on the substrate or on a film element arranged on the substrate, to be distinguished visually from the color of the form or the film element by means of a relief color-producing gravure or by means of "blind embossing" (see below) to produce.

It is also advantageous if a gravure printing plate is used without color to produce a so-called "blind embossing". In this case, only the substrate is deformed to form an embossed structure, but produces no congruent imprint. Such an embossed structure thus forms a relief in the color of the substrate. If the substrate is colorless, a colorless relief is obtained accordingly. As a result of the shadow embossing produced in a pre-print or film element, a structure visually perceptible from the unembossed region is generally produced by shadowing effects.

With particularly great advantage, tactile detectable security features can therefore be produced in the intaglio printing process, in which areas with printing and congruent embossing structure as well as blind embossed areas, which have only one embossed structure, are produced directly next to each other. Such structures have an extremely high counterfeit protection, since a spatial sequence of embossed structures with and without imprinting is particularly difficult to falsify.

In a preferred embodiment, it is further provided that the substrate has at least one paper layer. In the simplest case, the substrate is a single- or multi-ply security paper, this being advantageously made of cotton or of cotton having a polymer fraction x, where x is greater than 0% and less than 100%. With great advantage, a tactile detectable security feature can be at least partially embedded in the paper layer during papermaking. The security feature may in particular be a watermark or a security thread. Also conceivable is a tactile security feature introduced into the paper, in particular a fiber fleece or a paper strip, for producing a thickness modulation in the paper substrate. It is understood that in addition to the tactile security features embedded in the substrate, further security features can be arranged on the substrate. The at least partially embedded security threads may in turn contain the abovementioned, in particular optically variable features.

Of course, the substrate may also be a polymeric material, in particular a plastic film of PET, PP, PE, PA, PC or PVC. Such polymeric materials have a particularly long life, but they generally have a significantly poorer Verprägbarkeit and thus usually lower tactility z. As an imprint generated on them in intaglio printing.

The polymeric cover layer, which in each case is arranged over the entire surface of the two surfaces of the substrate, preferably consists of PET, PP, PE, LDPE, LLDPE, PA, PC, POPP, PVC or of natural biopolymers. In the case of natural biopolymers, in particular films of renewable raw materials, such as starch or polylactic acids (PLA) are conceivable. Of course, the polymeric cover layer may also be a mixture of one or more of the aforementioned polymers.

The polymeric cover layer advantageously has a thickness of from 0.8 μm to 20 μm, preferably from 2 μm to 12 μm, and very particularly preferably from 2 μm to 6 μm. In a specific embodiment, the thickness of the polymeric cover layer on one or both surfaces of the substrate is only about 3.5 μm. Overlays of such low thicknesses can be made by the methods described below and provide substantially complete retention of tactility of the tactile security feature even after being covered by the polymeric overcoat. Furthermore, such a thin layer already provides significantly improved circulation resistance compared to substrates without a cover layer, and, moreover, also increases the security against forgery of the security features covered by the cover layer.

The polymeric cover layer is advantageously transparent or translucent. A transparent layer ideally has a transmittance of 100%, although this value is generally not exactly reached in practice. In the context of the present invention, a transparent layer accordingly has a transmittance of 90% to 100%. For the purposes of the present application, the transmittance refers to the transmission of light, in particular to light in the visible wavelength range between 400 nm and 800 nm, d. H. for light, as it is usually perceived by the viewer. In other words, in the context of the present invention, the transmittance is the quotient of the radiant power transmitted through the material and the radiant power radiated onto the layer. However, depending on the application, the transmittance may also relate to a single wavelength or to other wavelength ranges, for example to the near UV or IR wavelength range following the visible spectral range.

In the context of the present application, a translucent or semitransparent layer has a transmittance of from 10% to 90% and particularly preferably from 20% to 80%.

It will be appreciated that a polymeric overcoat applied to a surface of the substrate will not be the same over its entire area Must have transmission properties. In particular, transparent and translucent areas, depending on the manufacturing process, can also alternate or be arranged in a specific pattern.

In a particularly preferred embodiment, it is provided that the polymeric cover layer is not provided with a security feature, preferably not with a tactile detectable security feature and in particular not with a print or an embossed structure. Such an embodiment advantageously makes it possible to equip the substrate with the tactile detectable security feature and all other security features provided for the data carrier and in a final step cover the substrate with all security features with the polymeric cover layers on both sides. Such an embodiment is industrially and economically interesting because the data carrier after application of the polymer cover layer with no further layer, in particular no further ink receiving layer, printing layer or other security-relevant feature must be equipped. Furthermore, such an embodiment has an extraordinary protection against counterfeiting, since all relevant to the authenticity of the data carrier security features, but also all other relevant to the recognizability of the data carrier information, especially imprints and other design elements are protected by the polymeric cover layer from manipulation and counterfeiting attacks.

Although in this preferred embodiment, the polymeric cover layer on both sides of the substrate no security feature, in particular no tactile security feature and in particular no security thread, foil patch, film strip or print, the top layer may have intrinsic features, such. B. caused by stretching the cover layer polarization features or fluorescent radiation not visible in the visible wavelength range. Such intrinsic properties of the polymeric topcoat are not precluded by the phrase "that the polymeric topcoat has no security features". The intrinsic properties can therefore be detected mechanically and / or visually with suitable aids or sensors and can act as an additional authenticity feature. However, it is particularly preferred if, in the presence of such intrinsic features in the polymeric cover layer, the cover layer is transparent or at least translucent in the visible wavelength range.

• a) ein Substrat mit zumindest einem taktil erfassbaren Sicherheitsmerkmal mit einer Reliefhöhe von 10 μm bis 180 μm bereitgestellt, und
• b) das Substrat mit dem zumindest einen taktil erfassbaren Sicherheitsmerkmal beidseitig jeweils vollflächig von einer polymeren Deckschicht derart abgedeckt, dass die Taktilität des zumindest einen taktil erfassbaren Sicherheitsmerkmals im Wesentlichen erhalten bleibt.

The invention also includes a method for producing a data carrier of the type mentioned above. In the method according to the invention

• a) a substrate provided with at least one tactile detectable security feature with a relief height of 10 microns to 180 microns, and
• b) the substrate with the at least one tactile detectable security feature on both sides in each case over the entire surface of a polymeric cover layer covered such that the tactility of at least one tactile detectable security feature is substantially maintained.

The tactile detectable security feature is advantageously produced with a relief height of 20 .mu.m to 150 .mu.m, preferably from 30 .mu.m to 130 .mu.m, and most preferably from 35 .mu.m to 90 .mu.m.

With particular advantage, furthermore, the polymeric cover layer is produced in such a way that the relief height of the covered, tactile detectable security feature is 40% to 100%, preferably 60% to 100% and very particularly preferably 80% to 100% of the relief height of the uncovered security feature.

The tactile detectable security feature can be applied to the substrate in method step a), in particular by means of a transfer method. For example, security threads, film strips or foil patches can be transferred to the substrate in such a transfer process. Advantageously, however, the substrate can also be provided with an imprint or an embossed structure, for which purpose, in particular, a gravure printing method, in particular a intaglio printing method, can be used. It is also conceivable to provide the substrate by the action of electromagnetic radiation with a relief structure, which z. B. by applying a paper-based substrate with laser radiation or a foamable print with heat is possible.

In a preferred embodiment, it is further provided that the substrate is produced in a paper machine with at least one paper layer and preferably during paper production a tactile detectable security feature, in particular a watermark or security thread, is at least partially embedded in the paper layer. Such embedded in the substrate security features are inseparably connected to the substrate and therefore increase the security against forgery of the thus secured data carrier.

In addition to these security features which are at least partially embedded in the substrate, it is of course also possible to use further, in particular tactile security features, for example by means of the aforementioned transfer methods are applied to the substrate.

In an advantageous embodiment, it is provided that the substrate in the method step a) is equipped with all provided for the disk tactile security features. In such an embodiment, the substrate of the data carrier is provided with all provided tactile and optionally further security features and / or for the recognizability of the data carrier relevant information, in particular imprints and other design elements, so that in a further process step, only the substrate on both sides of a polymeric Cover layer must be covered. The covering by the polymeric cover layer in such an embodiment is therefore the final step in the production of the data carrier, apart from the cutting of the data carrier into the desired shape and other subordinate process steps for the completion of the data carrier. Advantageously, in such an embodiment, all security elements and information of the substrate are protected from counterfeiting attacks by the polymeric cover layer.

In a preferred method, it is further provided that the polymeric cover layer is applied to the substrate by a Folienkaschierungs-, in particular Druckkaschierungs-, Spaltkaschierungs- or Luftkaschierungsverfahren. The above-mentioned methods for film lamination are suitable both for the production of data carriers in a process in which a large number of data carriers still to be separated are wound onto reels (roll process) or as sheets (sheet processes). As the name of the lamination method already reveals, in the printing lamination the web to be laminated is pressed into the carrier web with a defined pressure, while the lamination is operated with a predetermined gap thickness, so that the desired laminating pressure can be selected without the strength of the change the laminating path. In air lamination, substrate-friendly lamination of sensitive substrates is ensured by means of height-adjustable support rollers. The air lamination and, to some extent, the split lamination are particularly suitable for maintaining the tactility of the tactile security feature. In addition, it may be useful to heat to be laminated on the substrate polymeric cover layer, in particular by means of a hot air blower to press the substrate in order to achieve the fullest possible Relieferhaltung. The temperature of the hot air should be close to the glass transition temperature (TG) of the film.

According to a preferred embodiment, it is provided to emboss at least partial regions of the substrate during the arrangement of the polymeric cover layer on the substrate and thus to produce a further tactile detectable relief. For example, such an additional embossment of the substrate can be used to generate braille and advantageously be arranged in printed or unprinted areas of the substrate.

It should also be mentioned that in the case of the application of the polymeric cover layer in the form of a film, a connection of the film to the substrate must take place. For this purpose, a wet adhesive (wet laminating method), a dry adhesive (Trockenkaschierverfahren) can be used for the connection of substrate and film or without adhesive, but by means of heat and / or pressure (Thermokaschierverfahren) are used. Also conceivable is the so-called "thermal laminating process", in which the polymeric covering layer is produced by bonding a hot-extruded polymer layer to the substrate.

In an alternative method it is envisaged that the polymeric cover layer is applied to the substrate by a curtain coating, an extrusion coating method or by a low-level metered dose system. In the curtain coating process, which is also referred to as a "curtain coating process", the coating material provided as a polymeric cover layer is poured onto the substrate, wherein more than one layer of the same or different coating materials can be applied simultaneously with this method. In this type of coating, the substrate quality, in particular the surface roughness, the absorbency and the surface tension of the substrate, as well as the adjusted machine parameters, in particular the web speed, of the distance depend on the coating material provided for the polymeric cover layer, in particular the surface tension and viscosity of the cover layer to the substrate and the nozzle design, a uniformly thick coating order allows. In this coating variant, the tactility of a security feature can be particularly well preserved.

In extruder coating, flat film extruders are preferably used, with PE or PP preferably being used as the polymeric material, and the polymeric material generally being applied directly to the substrate. For example, films in the thicknesses 4 μm to 60 μm (cast-PP), 4 μm to 50 μm (POPP), 8 μm to 250 μm (PET) and PA films in various thicknesses are available for flat film extruders.

Since a curtain coating and extruder coating method is not suitable for a sheet process, that is not for so-called "sheet goods", data carriers according to the invention can advantageously be equipped with a polymeric cover layer in a sheet process by means of a low-viscosity metering system. In such a system, a slot nozzle is advantageously provided in the width of the sheet to be provided with the polymeric cover layer, which in turn contains a multiplicity of data carriers to be separated later. Alternatively, instead of a slot nozzle, a plurality of slot nozzles can be arranged next to one another in such a way that their width corresponds in total to the sheet width. It is also conceivable that several slot nozzles each side by side in z. B. two rows are arranged so that based on the direction of the arc, the end of a nozzle is always in the central region of the nozzle of an adjacent row and thus undesirable "seams" are avoided in the coating process.

In a further embodiment, it is further provided that during the arrangement of the polymeric cover layers on the two surfaces of the substrate, on the outer surface of the polymeric material additional features, in particular in the visible wavelength range invisible fluorescent materials are arranged. These features correspond to the intrinsic features described above and optionally contained in the polymeric cover layer, but are arranged by a suitable method during the arrangement of the polymeric cover layer on the substrate on the (outer) side of the cover layer facing or facing away from the substrate. These features can be clocked and positioned exactly positioned in width on the polymeric cover layer. The exact position and the amount of the additional feature on the polymeric cover layer of the data carrier can be used as a security-relevant feature for authenticating the data carrier by means of suitable sensors. For the preparation of such an additional feature z. B. a dosing unit is used, which positions the feature substance exactly and synchronized with the process for placing the polymeric cover layer on the substrate on the polymeric cover layer releases. Such a positioned and synchronized dosage of the additional feature is conceivable both in the roll and in the sheet method.

In a further variant of the method it is provided that the polymeric cover layers in a thickness of 0.8 .mu.m to 20 .mu.m, preferably from 2 .mu.m to 12 .mu.m and very particularly preferably from 2 .mu.m to 6 .mu.m applied to the substrate, wherein in particular a polymeric Cover layer of about 3.5 microns receives the tactility of the tactile security feature exceptionally well.

It should also be mentioned that the polymeric cover layer arranged on both sides of the substrate can, in an advantageous embodiment, be at least partially matted. This is advantageous when the polymeric cover layers have a relatively high gloss, which is not always visually appealing to a viewer and can make it difficult to machine-detect the data carrier. A high gloss is optionally given in those embodiments in which the polymeric cover layers are applied in a final step on the substrate with substantially all security features and therefore the polymeric cover layers have no matte security features, imprints, etc. In particular, in such embodiments, an at least partial matting of the polymeric cover layer may be particularly advantageous for machine detection.

To reduce the gloss of the polymeric cover layers, it is possible on the one hand, an already frosted, d. H. reduced in their gloss polymeric cover layer on the substrate to order. On the other hand, however, it is also possible to at least partially matt the polymeric cover layer already arranged on the substrate by suitable matting methods or by means of a coating. If appropriate, a matted cover layer arranged in the region of a tactile security feature may be used, for example. B. be provided by a glossy coating in the field of tactile security feature partially with a higher gloss, which may be advantageous for the visual detectability, as explained below.

The matting can in particular facilitate the machine authenticity check of the tactile security features according to the invention and thus increase the security against counterfeiting. Moreover, if the polymeric topcoat is not matted in those areas where the tactile security features of the present invention are disposed under the polymeric topcoat, then the viewer will be formally affected by the tactile security feature and the ability to authenticate through the glossy, ie, non-matted area in one otherwise frosted environment pointed out. By providing non-matted and matted areas, the tactile features relevant for the authenticity check can thus be emphasized for the viewer so that an easier authenticity check is possible. The counterfeit security of the data carrier is thus increased in a synergistic way by the interaction of tactile verifiability and easier discoverability of the tactile security features.

Further embodiments and advantages of the invention will be described below with reference to Figures explained, was waived in their representation on a scale and proportionate reproduction in order to increase the clarity.

Show it:

1 a schematic representation of a data carrier according to the invention with tactile detectable security features in supervision, and

2 a cross section through the disk of 1 along the line A-A '.

The invention will now be explained using the example of a data carrier in the form of a so-called "composite film banknote". 1 shows in plan a schematic representation of the banknote 1 , with several tactile detectable security features 2 . 3 . 4 and 6 , which are arranged on the substrate or partially or completely embedded in the substrate. Furthermore, the banknote points 1 still authenticity features, which are z. B. with the reference numeral 5 marked imprint that does not necessarily tactile detectable trained. The substrate with the security features 2 . 3 . 4 . 5 and 6 is on both sides in each case over the entire surface of a polymeric cover layer 9a . 9b covered, with respect to 2 will now be explained in more detail.

In the illustration according to 2 is on the one hand the embedded in the banknote substrate security thread 2 shown, which is a so-called "window security thread" with a thickness of about 6 microns to 60 microns. The window security thread 2 has areas 2 B which are substantially completely embedded in the substrate, in the present case a paper-based substrate. Furthermore, the window security thread occurs 2 in the fields of 2a to the surface of the paper substrate, so that arranged on the security thread characteristics for authenticity assurance, in particular holograms, diffraction structures, thin-film elements, etc. for checking the authenticity of the viewer can be visually checked. In 2 is the cross section through such an area 2a It can also be seen that the security thread is in the area 2a is only partially embedded in the substrate and therefore protrudes to the not further drawn amount R0 from the surface of the bill and thus at least in the areas 2a a tactile security feature of the present invention.

At the in 1 shown security feature 3 it is a haptic detectable security feature created in a gravure printing process. How out 2 can be seen, the disk points in the security feature 3 on the one hand relief structures 3b with a congruently arranged print 30 on. For the production of such tactile structures, the imprint in the color-guiding intaglio printing is simultaneously printed 30 and congruent to the embossed structure 3b generated. The relief height R0 of the embossed structure 3b is with imprint 30 about 35 μm to 110 μm.

In addition to the above-described tactile feature of embossed structure 3b and imprint 30 became a tactile structure in the substrate 3a produced, which has no color order. Such embossing structure obtained by blind embossing of the substrate can also be produced with a stitch printing plate, wherein in those to the areas 3a Corresponding areas of the Stichdruckplatte no color introduced and the printing plate is pressed without color in the substrate. The result is an embossed structure 3a generated with good tactile detectability. The relief height of the embossed structure 3a is in 2 denoted by the reference R0 and is about 35 microns to 90 microns. As in 2 Shown are embossed structure 3a and embossed structure 3b with imprint 30 arranged in the immediate vicinity and generated by means of a printing plate in a process step. This approach makes it possible to create a tactile security element with great protection against counterfeiting, since it is very difficult to imitate so closely spaced tactile areas with and without paint application. But also a small spacing of embossed structure 3a and embossed structure 3b with imprint 30 , z. B. about 2 mm to 5 mm, resulting in a very tamper-proof structure.

On the surface of the substrate 7 was further by means of a transfer method of film strips 4 applied, which is arranged as an elongate film element over the entire width of the banknote. The foil strip has the relief height R0 of approximately 20 μm to 50 μm with respect to the surface of the substrate.

The banknote 1 also has a tactile detectable watermark 6 on (see 1 ).

As in 2 R0 is shown as the height of the tactile security feature 2 . 3 . 4 . 6 defined with respect to the substrate surface. So R0 indicates how far the security feature 2 . 3 . 4 . 6 protrudes with respect to the substrate surface.

How out 2 can be seen, are the tactile security elements 2 . 3 and 4 on one side of the substrate with the polymeric cover layer 9a covered. In the embodiment shown is to a slide 9a by means of an adhesive 8th with a thickness of about 0.5 microns to 8 microns on the tactile security elements having surface of the substrate 7 applied. The adhesive application can z. B. 2 g / m ² , which corresponds to a thickness of a few micrometers. Also on the second surface of the substrate, on which further tactile security features may be located, exemplified by the cross-sectional view of FIG 2 embedded window security thread 10 is shown is by means of an adhesive 8th a slide 9b arranged as a polymeric cover layer. With the slides 9a . 9b it may be a PET film having a thickness of 0.8 .mu.m to 12 .mu.m, in particular of about 6 microns. It is also conceivable in such a case that one film is made of a first material and the other film of a second material, for example POPP or PET with the same or a different thickness. Furthermore, the polymeric cover layers 9a and 9b unlike in 2 shown without glue, z. B. be arranged by extrusion directly on the substrate with security features.

How out 2 is easy to recognize, has the relief height of the embossed structure 3a after covering by the cover layer 9a the value R1. Also the foil strip 4 and the security thread 2 point to cover by the polymer topcoat 9a a tactile detectable relief of the relief height R1. In the case of the tactile security features of the present invention, R1 is defined as the height of the polymeric cover layer in the region of the covered security feature with respect to the polymeric cover layer arranged on the substrate surface (without a tactile security feature) (see 2 ).

According to the invention, as 2 illustrates the relief height R0 of the on the substrate 7 arranged tactile security features even after coverage by the polymeric cover layer 9a essentially completely preserved. The quotient of R1 and R0 amounts to complete tactility 1 and is particularly preferably at least in the range of 0.8 to 1. In such a case, the user of the banknote with respect to the relief height of the tactile security feature without or with coverage by the polymeric cover layer perceive virtually no difference. In other words, the tactile detectability of the security feature covered by the polymeric cover layer is ensured in each case according to the invention, while at the same time the circulation resistance and the counterfeit protection by the polymeric cover are significantly increased.

It is understood that alternatively to the in 2 shown polymeric cover layers 9a . 9b also cover layers by also very advantageous application method, such. Curtain coating extruder coating methods, or by means of a low-level metering system. Even with such methods, data carriers according to the invention can be produced with tactile, easily detectable security features, large protection against counterfeiting and high circulation stability.

Claims (19)

Data carrier in particular value document, such as banknote, identity card and the like, with a substrate having at least one tactile detectable security feature, wherein the relief height of the at least one tactile detectable security feature is 10 microns to 180 microns, and wherein the substrate with the at least one tactile detectable security feature Covered on both sides in each case over the entire surface of a polymeric cover layer such that the tactility of the at least one tactile detectable security feature is substantially maintained. A data carrier according to claim 1, characterized in that the tactile detectable security feature has a relief height of 20 microns to 150 microns, preferably from 30 microns to 130 microns and most preferably from 35 microns to 90 microns. A data carrier according to claim 1 or 2, characterized in that the relief height of the covered by the polymeric cover layer tactile detectable security feature is 40% to 100%, preferably 60% to 100% and most preferably 80% to 100% of the relief height of the uncovered security feature , Data carrier according to at least one of claims 1 to 3, characterized in that the tactile detectable security feature is selected from the group watermark, security thread, foil strip, foil patch, imprint, embossed structure or by exposure to electromagnetic radiation generated relief structure. A data carrier according to claim 4, characterized in that the imprint is an imprint produced in the gravure printing process, in particular intaglio printing process, and has an imprinting structure arranged congruently to the imprint. A data carrier according to at least one of claims 1 to 5, characterized in that the substrate has at least one paper layer which preferably has a tactile detectable security feature, in particular a watermark or a security thread, at least partially embedded in the paper layer during papermaking. A data carrier according to at least one of claims 1 to 6, characterized in that the substrate is a polymeric material, in particular a plastic film of PET, PP, PE, PA, PC or PVC. A data carrier according to at least one of claims 1 to 7, characterized in that the polymeric cover layer is formed from PET, PP, PE, LDPE, LLDPE, PA, PC, BOPP, PVC or natural biopolymers. A data carrier according to at least one of claims 1 to 8, characterized in that the polymeric cover layer has a thickness of 0.8 μm to 20 μm, preferably from 2 μm to 12 μm, very particularly preferably from 2 μm to 6 μm and in particular from approx. Has 3.5 microns. Data carrier according to at least one of claims 1 to 9, characterized in that the polymeric cover layer is transparent or translucent and / or not equipped with a security feature, preferably not with a tactile detectable security feature and in particular not with a print or an embossed structure. Method for producing a data carrier, in particular a value document, such as a banknote, identity card and the like, in which a) a substrate is provided with at least one tactile detectable security feature with a relief height of 10 microns to 250 microns, and b) the substrate with the at least one tactile detectable security feature is covered on both sides in each case over the entire surface of a polymeric cover layer such that the tactility of the at least one tactile detectable security feature is substantially maintained. A method according to claim 11, characterized in that the tactile detectable security feature is generated with a relief height of 20 microns to 150 microns, preferably from 30 microns to 130 microns and most preferably from 35 microns to 90 microns. A method according to claim 11 or 12, characterized in that the polymeric cover layer is produced such that the relief height of the covered tactile detectable security feature 40% to 100%, preferably 60% to 100% and most preferably 80% to 100% of the relief height of uncovered security feature. Method according to at least one of claims 11 to 13, characterized in that the substrate in the method step a) with a tactile detectable security feature, in particular a security thread applied by means of a transfer method, foil strip or foil patch, a print produced by means of a gravure printing method or an embossed structure and / / or or a relief structure generated by means of electromagnetic radiation is equipped. Method according to at least one of claims 11 to 14, characterized in that the substrate is produced in a paper machine with at least one paper layer and preferably during paper making a tactile detectable security feature, in particular a watermark or security thread, is at least partially embedded in the paper layer. Method according to at least one of claims 11 to 15, characterized in that the substrate in the method step a) is equipped with all provided for the disk tactile security features. A method according to any one of claims 11 to 16, characterized in that the polymeric cover layer is applied by a Folienkaschierungs-, in particular Druckkaschierung-, Spaltkaschierungs- or Luftkaschierungsverfahren on the substrate. A method according to at least one of claims 11 to 17, characterized in that the polymeric cover layer is applied to the substrate by a curtain coating, an extruder coating method or by means of a Flachklebedosiersystems. A method according to at least one of claims 11 to 18, characterized in that the polymeric cover layer in a thickness of 0.8 .mu.m to 20 .mu.m, preferably from 2 .mu.m to 12 .mu.m, most preferably from 2 .mu.m to 6 .mu.m and in particular from ca 3.5 μm is applied to the substrate.

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