AT517320A1 - Security element with color shift effect - Google Patents

Security element with color shift effect Download PDF

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Publication number
AT517320A1
AT517320A1 ATA341/2015A AT3412015A AT517320A1 AT 517320 A1 AT517320 A1 AT 517320A1 AT 3412015 A AT3412015 A AT 3412015A AT 517320 A1 AT517320 A1 AT 517320A1
Authority
AT
Austria
Prior art keywords
security element
area
layer
characterized
color shift
Prior art date
Application number
ATA341/2015A
Other languages
German (de)
Inventor
Mayrhofer Marco
Original Assignee
Hueck Folien Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hueck Folien Gmbh filed Critical Hueck Folien Gmbh
Priority to ATA341/2015A priority Critical patent/AT517320A1/en
Publication of AT517320A1 publication Critical patent/AT517320A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/355Security threads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373Metallic materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378Special inks

Abstract

The invention relates to a security element for banknotes, documents of value and data carrier comprising a carrier substrate and a coating having color shift effects, characterized in that the coating has at least two optionally repeating regions with different color shift effects, wherein the regions are each matched to one another such that at steady change of the viewing angle, the original color of the first area first in the area adjacent to this first area or in the area spaced from this first area or in a first area at least partially overlapping area and further changing the angle of view in each further adjacent, spaced or overlapping areas appears.

Description

Security element with color shift effect

The invention relates to a security element for documents of value and data carriers with at least two different color shift effects, wherein when changing the viewing angle not only the color shift effect is recognizable but also an additional optical effect is produced.

Security elements that have a color shift effect are known.

From WO 02/18155 a method for counterfeit-proof marking of objects is known, wherein the article is applied with a mark consisting of an electromagnetic wave reflecting first layer on the electromagnetic wave transmissive layer having a defined thickness, whereupon on this layer from metallic clusters formed third layer follows, is provided.

EP 1 716 007 B1 discloses security elements with optically variable layers which impart different color impressions at certain viewing angles and which have additional security levels in addition to this color-shift effect in the color-shift effect setup.

WO 2006/040069 A discloses a security element for protecting valuables with an optically variable layer, which likewise gives different color impressions at different viewing angles. In addition, a semitransparent ink layer is arranged in a limited coverage area over the optically variable layer, the color impression of which is adapted to the color impression of the optically variable layer under predetermined viewing conditions.

EP 2 420 391 A discloses a security element having an optically variable layer which has different color impressions at different viewing angles, wherein a colored metallic layer is arranged in a defined area above or next to the optically variable layer, the color impression of this layer the color impression of the optically variable layer is adjusted under a defined viewing angle.

The object of the invention was to provide a security element which has at least two different color-shift effect areas and an increased security against counterfeiting.

The invention therefore relates to a security element for banknotes, documents of value and data carrier comprising a carrier substrate and a coating which has color shift effects, characterized in that the coating has at least two optionally repeating regions with different color shift effects, the regions being respectively matched to one another in such a way that that with constant change of the viewing angle, the original color of the first area first in the area adjacent to this first area or in the area spaced from this first area or in a first area at least partially overlapping area is visible and further changing the angle of view in the other adjacent, spaced or overlapping areas appears.

By arranged in the areas of different color shift effects, which are selected according to the invention so that when changing the viewing angle in each case the original color of a first area in each adjacent area or in the area spaced from this first area or in a first area at least partially overlapping area appears and thus becomes visible, the observer gets the impression that this color moves in a kind of rolling movement over the security element.

As carrier substrates, for example carrier films are preferably flexible plastic films, for example of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC , PTFE, ETFE (ethylene tetrafluoroethylene), PFA (tetrafluoroethylene)

Perfluoropropyl vinyl ether fluorocopolymer), MFA (tetrafluoromethylene-perfluoropropyl vinyl ether fluorocopolymer), PTFE (polytetrafluoroethylene), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), and EFEP (ethylene-tetrafluoroethylene-hexafluoropropylene fluoropolymer). The carrier films preferably have a thickness of 5 to 700 μm, preferably 5 to 200 μm, particularly preferably 5 to 50 μm.

Particular preference is given to using PET films as the carrier substrate.

On the carrier substrate, a coating is applied, which consists of partially juxtaposed different Farbkippeffektaufbauten.

Preferably, these different areas are created by printing color shift effect inks. Pigments suitable for the production of such printing inks are disclosed, for example, in WO00 / 31571 A, US 5,278,590, US 5,135,812.

Alternatively, the color shift effect can also be realized by a layer structure comprising an electromagnetic wave reflecting layer, a polymeric or dielectric spacer layer and absorption layer, for example a metallic layer or a layer formed from metallic clusters.

In this case, an electromagnetic wave reflecting layer is applied to the carrier substrate. This layer may preferably be made of metals such as aluminum, gold, chromium, silver, copper, tin, platinum, nickel or tantalum, of semiconductors such as silicon, and their alloys, for example nickel / chromium, copper / aluminum and the like or a Printing ink with metal pigments exist.

The thickness of the electromagnetic wave reflecting layer is preferably about 10-50 nm, but also higher or lower layer thicknesses are possible.

The following polymeric or dielectric spacer layer can also be applied over the entire surface or preferably partially. However, it is also possible for a plurality of polymeric or dielectric spacer layers to be applied over the whole area or partially.

These polymeric spacer layer (s) consist for example of conventional or radiation-curing, in particular UV-curing, dyeing or coating systems based on nitrocellulose, epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA , PVC, isocyanate, urethane or PS copolymer systems.

As a dielectric spacer layer (s), for example, layers of S1O2, ZnS, MgF2, T1O2 or Ta20s in question.

The thickness of the spacer layer can be selectively varied within a wide range, for example in a range of 10 nm to 3 μm, in order to produce different color matching effects matched to one another.

On this spacer layer is then applied a full-area or partial absorption layer formed of metallic clusters. The metallic clusters can consist, for example, of aluminum, gold, palladium, platinum, chromium, silver, copper, nickel, tantalum, tin and the like or their alloys, such as, for example, Au / Pd, Cu / Ni or Cr / Ni.

Alternatively, a full-surface or partial metallic layer can be applied as the absorption layer, this layer being made, for example, of metals, such as, for example, aluminum, gold, chromium, silver, copper, tin, platinum, nickel or tantalum, or their alloys, for example nickel / chromium, Copper / aluminum and the like or a printing ink with metal pigments may exist.

The areas with different formation of the color shift effect are applied side by side. In this case, the regions can be arranged directly adjoining one another, overlapping or register-accurate with an unprinted region between the individual regions, wherein the unprinted region preferably occupies less than 50% of the width of a printed region.

The shape of the regions may vary, the regions may be embodied as geometric shapes, in the form of waves, arrows, bars, stripes, characters, letters, numbers, symbols and the like.

The length of the areas is such that all areas can be viewed under the same viewing angle.

Lengths of about 0.5 to 25 mm, for example, have proved to be suitable for areas in bar form.

In a further embodiment, the regions in the form of a gradient may be printed overlapping in a defined region, that is to say the transition between the regions is smooth and flowing and not along a sharp boundary.

Exemplary embodiments are shown in FIGS. 1 to 10 in which: 1, 2, 3 areas with different color-shift effects 4, 5, 6 are colored print layers which correspond to the color impression of the associated print

7, an electromagnetic wave reflecting layer 8 a polymeric or dielectric spacer layer with different layer thickness 9 a layer formed of metallic clusters or a metallic layer 7 a carrier substrate 8 an absorption layer for enhancing the color-shift effect 9 recesses in the color-shift effect layer 10 an unprinted area 11 a resist layer having an optically active structure, such as a diffraction structure, a hologram or a surface relief.

FIG. 1 shows an exemplary embodiment of a security element with three different color-shift effects 1, 2, and 3.

When viewed at an angle of 90 ° is the target color, in this case, a blue hue only in the first area recognizable. If the security element is tilted so that the viewing angle is approximately 60 °, the blue hue disappears from the first area and the target hue appears in the second area, the security element is tilted by a further 30 °, ie in such a way that the viewing angle is 30 ° , the blue hue disappears from the second area and appears in the third area.

The security element gives the impression of a movement effect of the target color (in this case blue) when tilting.

It is particularly advantageous if, as in this case, not only the color of the areas is matched at an observation angle of 90 ° in the individual areas, but also the color under the other viewing angles.

If the areas are applied in the form of a gradient, the differences between the individual colors are attenuated by the color transitions and the movement of the target color does not abruptly but smoothly.

FIG. 2 shows the simplest embodiment of the invention.

The security element has on a transparent carrier film on two repeating areas 1, 2 with different color shift effect.

FIG. 2a shows an embodiment analogous to FIG. 2, but with a further absorption layer 11 below the color-shift effect layers 1, 2, 3 for enhancing the color-shift effect. In this case, it may be at the absorption layer to a layer of an absorbent ink, preferably a dark, especially black ink or even a metallic layer or a layer of a metal compound, for example of non-stoichiometric alumina or stoichiometric or non-stoichiometric copper oxide, the For example, was applied by vapor deposition or sputtering act.

In Figure 3, the embodiment is shown, as shown in Fig. 1, three different Farbkippeffekte 1, 2, 3, which were applied in this case overlapping each other in regions. The security element in this case shows gradient zones or a gradient gradient with overlapping areas 13.

FIG. 4 shows an embodiment in which the sequence of the different regions 1, 2, 3 is arranged in opposite directions.

FIG. 5 shows a further preferred embodiment. The areas 1, 2, 3 which have the different color-shift effects are not implemented over the entire width of the security element, in the remaining area of the security element a print layer 4, 5, 6 is applied, the color of the respective Farbkippeffektbereich when viewed at an angle of 90 ° corresponds.

If the viewing angle is changed, then in the range of different color shift effects, the migration of the target color from one area to another, in the area of the ink does not change color, the color of the print area remains unchanged and is then different to the hue of the Farbkippeffektbereichs. Alternatively, the color of the Farbkippefffekts under any other viewing angle for the time being the

Color impression of the ink correspond, in which case the change in the viewing angle of the effect described above occurs analogously.

FIG. 6 shows an embodiment in which recesses 12 in the form of numbers or symbols are provided in the color shift effect layer regions 1, 2. These recesses may be realized by recesses in the color-shift effect printing layer or, if the color-shift effect layer is realized by a multilayer structure consisting of an electromagnetic wave reflecting layer, a spacer layer 8 and an absorption layer 9 of a metallic layer or a layer of metallic clusters electromagnetic wave reflecting layer 7- and / or the absorption layer 9 ^

The recesses may be in the form of geometric shapes, characters, letters, numbers, lines or symbols and may be provided in one or more of the areas with different color-shift effects. In Farbkippeffektschichtbereich 3 no recess is provided.

FIG. 7 shows an embodiment in which the regions of different color-shift effects 1, 2, 3 are executed in an arrow shape.

FIG. 8 shows an embodiment in which the regions of different color-shift effects 1, 2, 3 are executed in waveform. In this case, recesses 12 are provided in the form of letters in the individual areas.

FIG. 9 shows an embodiment in which the regions of different color-shift effects 1, 2, 3 are separated from one another by an unprinted region 13. In addition, the carrier substrate below the layer with the regions of different color-shift effects has a lacquer layer of an optically active structure, for example a diffraction structure, a hologram, a surface relief or the like.

If desired, this lacquer layer can be combined with a reflection layer (not illustrated), for example a metallic reflective layer, which is not shown in FIG.

In a further embodiment, the security element can also be designed as a transfer material, wherein the security element is then fixed with the aid of an adhesive layer on the object to be secured and the carrier substrate is then optionally removed.

In this case, it may be advantageous to provide the carrier substrate with a release layer before applying the security features.

The security element according to the invention can also have further security features which can be present in further layers. These security features may be located below or above the layer having the color-shift effect of the present invention, taking care not to disturb the impression of the advancing color-shift effect.

Alternatively, the further security features can also be provided in unprinted areas or instead of at least one of the pressure areas 4, 5, 6 illustrated in FIG. 5.

These security features, for example, can have certain chemical, physical and also optical or optical active properties.

To adjust the magnetic properties of a layer, paramagnetic, diamagnetic and also ferromagnetic substances such as iron, nickel and cobalt or their compounds or salts (for example oxides or sulfides) can be used.

Particularly suitable are magnetic pigment paints with pigments based on Fe oxides, iron, nickel cobalt and their alloys, barium or cobalt ferrite, hard and soft magnetic iron and steel grades in aqueous or solvent-containing dispersions. As solvents, for example,

Propanol, ethyl acetate, methyl ethyl ketone, methoxypropanol and mixtures thereof in question.

The pigments are preferably incorporated in acrylate polymer dispersions having a molecular weight of from 150,000 to 300,000, in nitrocellulose, acrylate-urethane dispersions, acrylate-styrene or PVC-containing dispersions or in solvent-containing dispersions of this type.

The magnetic layer may also have a coding. Both magnetic materials of the same coercivity and / or remanence as well as different coercivity and / or remanence can be used to form the coding.

In another embodiment, the electromagnetic reflective metallic layer of the color shift effect setup may itself have magnetic properties. This is achieved, for example, by the use of a magnetic material such as Fe, Ni, Co.

To adjust electrical properties, such as conductivity, for example, graphite, carbon black, conductive organic or inorganic polymers. Metal pigments (for example, copper, aluminum, silver, gold, iron, chromium and the like), metal alloys such as copper-zinc or copper-aluminum or amorphous or crystalline ceramic pigments such as ITO and the like may be added. Furthermore, it is also possible to use doped or non-doped semiconductors, such as, for example, silicon, germanium or ionic conductors, such as amorphous or crystalline metal oxides or metal sulfides, as an additive. Furthermore, polar or partially polar compounds such as surfactants or nonpolar compounds such as silicone additives or hygroscopic or non-hygroscopic salts can be used or added to adjust the electrical properties of the layer.

The optical properties of the layer can be influenced by visible dyes or pigments, heat-sensitive inks or pigments. These can be used individually or in all possible combinations.

Optically active features are understood here to be diffraction structures, diffraction gratings, kinegrams, holograms, DID® (microstructures of the 0th order in conjunction with thin layers).

These optically active features can be produced, for example, by known UV embossing processes, as described, for example, in EP 1 310 381 A or by hot embossing processes.

The optically active features may optionally be combined with a full-surface or partial reflection layer, for example with a metallic reflective layer or an HRI layer (high refractive index layer).

To anchor the security element in or on the document of value, this is usually provided on one or both sides with an adhesive coating. This adhesive coating can be carried out either in the form of a heat-seal, cold-seal or self-adhesive coating. The adhesive may also be pigmented using as pigments all known pigments or dyes, for example T1O2, ZnS, kaolin, ATO, FTO, aluminum, chromium and silicon oxides or, for example, organic pigments such as pthalocyanine blue, i-indolite yellow, dioxazine violet and the like , Furthermore, it is possible to add heat-sensitive dyes or pigments to luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV region or in the IR region. These are replaceable in all possible combinations. In addition, luminescent pigments can also be used alone or in combination with other dyes and / or pigments.

Optionally, the security element can also be protected by one or more protective lacquer layer (s), which may be pigmented or unpigmented, or further refined, for example, by laminating or the like.

Optionally, the security element can also be provided on one or both sides with an adhesive layer, for example with a cold or

Heat seal layer or a self-adhesive coating.

The security elements according to the invention are therefore optionally suitable for assembly as security features in data carriers, in particular value documents such as ID cards, banknotes or labels, seals and the like, but also as packaging material, for example in the pharmaceutical, electronics and / or food industry, for example in shape blister,

Folding boxes, covers, foil packaging and the like. For use as security features, the substrates or security elements are preferably cut into strips or threads or patches, wherein the width of the strips or threads may preferably be 0.05-10 mm and the patches preferably have average widths or lengths of 0.3. 20 mm. For use in or on packaging, the security element is preferably cut into strips, tapes, threads or patches, wherein the width of the threads, strips or tapes is preferably 0.05-50 mm and the patches are preferably average widths and lengths of 2 -30 mm.

Claims (13)

  1. claims:
    1. Security element for banknotes, documents of value and data carrier comprising a carrier substrate and a coating which has color shift effects, characterized in that the coating has at least two optionally repeating regions with different color shift effects, wherein the regions are each matched to one another in such a way that with constant change of the viewing angle, the original color of the first area first in the area adjacent to this first area or in the area spaced from this first area or in a first area at least partially overlapping area and further changing the viewing angle in the respective other adjacent, spaced or overlapping areas appears.
  2. 2. Security element according to claim 1, characterized in that the areas of different color shift effect are formed by a printing layer.
  3. 3. Security element according to claim 1, characterized in that the regions of different color shift effects are formed by a respective coating consisting of an electromagnetic wave reflecting layer, a spacer layer and an absorber layer.
  4. 4. Security element according to one of claims 1 to 3, characterized in that the range of different color shift effects as geometric shapes or in the form of waves, arrows, bars, stripes, characters, letters, numbers, symbols are executed.
  5. 5. Security element according to one of claims 1 to 4, characterized in that the coating with different color shift effects is not carried out over the entire width of the security element.
  6. 6. Security element according to claim 5, characterized in that the security element in the region not provided with the coating with different color shift effects has a print layer corresponding in color to each of the area with color shift effect when viewed at an angle of 90 °.
  7. 7. Security element according to one of claims 1 to 6, characterized in that the course of the color shift effects of the individual areas over the length of the security element is in opposite directions.
  8. 8. A security element according to any one of claims 1 to 7, characterized in that an absorption layer for enhancing the color shift effect is provided under the coatings with different Farbkippeffekten.
  9. 9. Security element according to one of claims 1 to 8, characterized in that in one or more of the areas with different Farbkippeffekten recesses in the form of geometric shapes, characters, letters, numbers, lines or symbols are provided.
  10. 10. Security element according to one of claims 1 to 9, characterized in that it is provided on one or both sides with a protective lacquer layer.
  11. 11. Security element according to one of claims 1 to 10, characterized in that it is provided on one or both sides with an adhesive coating.
  12. 12. Security element according to one of claims 1 to 11, characterized gekennezeichnet that it is designed as a transfer element.
  13. 13. Use of the security element according to one of claims 1 to 12 for at least embedding in and / or for application to documents of value, data carriers or packaging.
ATA341/2015A 2015-05-29 2015-05-29 Security element with color shift effect AT517320A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ATA341/2015A AT517320A1 (en) 2015-05-29 2015-05-29 Security element with color shift effect

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ATA341/2015A AT517320A1 (en) 2015-05-29 2015-05-29 Security element with color shift effect
EP16720343.9A EP3302996A1 (en) 2015-05-29 2016-04-14 Security element having a color-shifting effect
PCT/EP2016/000615 WO2016192828A1 (en) 2015-05-29 2016-04-14 Security element having a color-shifting effect

Publications (1)

Publication Number Publication Date
AT517320A1 true AT517320A1 (en) 2016-12-15

Family

ID=55910907

Family Applications (1)

Application Number Title Priority Date Filing Date
ATA341/2015A AT517320A1 (en) 2015-05-29 2015-05-29 Security element with color shift effect

Country Status (3)

Country Link
EP (1) EP3302996A1 (en)
AT (1) AT517320A1 (en)
WO (1) WO2016192828A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766738A (en) * 1979-12-28 1998-06-16 Flex Products, Inc. Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method
US5135812A (en) 1979-12-28 1992-08-04 Flex Products, Inc. Optically variable thin film flake and collection of the same
US5278590A (en) 1989-04-26 1994-01-11 Flex Products, Inc. Transparent optically variable device
DE10042461C2 (en) 2000-08-29 2002-11-07 November Ag Molekulare Medizin A process for the forgery-proof marking of articles and forgery-proof marking
AT502139A1 (en) 2001-11-09 2007-01-15 Hueck Folien Gmbh Rail-material materials with surface structure, method for the production thereof and their use
AT504587A1 (en) 2004-02-16 2008-06-15 Hueck Folien Gmbh Impact-safe safety feature with color tip effect
DE102004049118A1 (en) 2004-10-07 2006-04-13 Giesecke & Devrient Gmbh Security element and method for its production
JP5311159B2 (en) * 2008-10-03 2013-10-09 シクパ ホルディング ソシエテ アノニムSicpa Holding Sa Optically changing security elements
AT510220B1 (en) 2010-07-19 2013-07-15 Hueck Folien Gmbh Security element with an optical variable layer
DE102011119598A1 (en) * 2011-11-29 2013-05-29 Ovd Kinegram Ag Optically variable element
WO2014019163A1 (en) * 2012-08-01 2014-02-06 Sicpa Holding Sa Optically variable security threads and stripes
WO2014032238A1 (en) * 2012-08-29 2014-03-06 Sicpa Holding Sa Optically variable security threads and stripes

Also Published As

Publication number Publication date
EP3302996A1 (en) 2018-04-11
WO2016192828A1 (en) 2016-12-08

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