WO2016008553A1 - Sicherheitselement mit farbkippeffekt und manipulationsnachweis - Google Patents
Sicherheitselement mit farbkippeffekt und manipulationsnachweis Download PDFInfo
- Publication number
- WO2016008553A1 WO2016008553A1 PCT/EP2015/000823 EP2015000823W WO2016008553A1 WO 2016008553 A1 WO2016008553 A1 WO 2016008553A1 EP 2015000823 W EP2015000823 W EP 2015000823W WO 2016008553 A1 WO2016008553 A1 WO 2016008553A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- security element
- liquid
- element according
- crystalline
- Prior art date
Links
- 230000000694 effects Effects 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title abstract 2
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000004922 lacquer Substances 0.000 claims description 36
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000002318 adhesion promoter Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 130
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 7
- 239000012790 adhesive layer Substances 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000002178 crystalline material Substances 0.000 description 19
- 239000003973 paint Substances 0.000 description 8
- 229920005601 base polymer Polymers 0.000 description 5
- 239000002966 varnish Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- -1 MOPP Substances 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920006228 ethylene acrylate copolymer Polymers 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000004920 heat-sealing lacquer Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- HXHCOXPZCUFAJI-UHFFFAOYSA-N prop-2-enoic acid;styrene Chemical class OC(=O)C=C.C=CC1=CC=CC=C1 HXHCOXPZCUFAJI-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003362 replicative effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/324—Reliefs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/328—Diffraction gratings; Holograms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/364—Liquid crystals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1828—Diffraction gratings having means for producing variable diffraction
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/03—Forms or constructions of security seals
- G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
- G09F3/0341—Forms or constructions of security seals characterised by the type of seal used having label sealing means
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/08—Fastening or securing by means not forming part of the material of the label itself
- G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/334—Applications of adhesives in processes or use of adhesives in the form of films or foils as a label
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/023—Adhesive
- G09F2003/0245—Differential adhesive strength
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0257—Multilayer
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0276—Safety features, e.g. colour, prominent part, logo
Definitions
- the invention relates to a security element, in particular a security label, which allows a proof of tampering.
- the present invention relates to security elements that have a color shift effect and a further security feature that is not recognizable in the intact state, which becomes recognizable only after a manipulation attempt.
- WO 01/93231 A discloses a security label which has two microstructures, one of which is a diffractive structure, which can also be recognized in an unmanipulated state, and the other is a release-controlling structure. In a manipulation attempt, at least parts of a reflective layer are peeled off, whereby a new visually recognizable information becomes visible.
- Object of the present invention was to provide a security element, in particular a security label that allows a tamper evidence, the security label as a security feature has a color shift effect and an additional security feature that is recognizable only during manipulation and is not recognizable in non-manipulated state.
- the invention is therefore a security element with tamper evidence, in particular a security label or a transferable element, characterized in that it comprises the following layers:
- a first layer which represents a carrier surface 8, which is printed over the entire area or partially, or a carrier substrate 1 which has a full-surface or partial lacquer layer 6 which has an optically active structure 7 or a full-area or partial first liquid-crystalline layer 2,
- a second layer which is a liquid-crystalline layer 3, c. optionally a light-absorbing layer 4,
- the adhesion between the layers a. and b. is less than the adhesion between the layers b. c. and d. and wherein the security element has a color shift effect.
- the first layer may be an embossed carrier substrate, or a carrier substrate having a resist layer having an optically active structure or a first liquid crystalline layer.
- Embossed carrier substrates are, for example, hot stamping foils or replicate varnish layers, wherein the replicating varnish layer may be hardening or physically hardening.
- 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 , Fluoropolymers such as Teflon and the like in question.
- the carrier films preferably have a thickness of 5 to 700 ⁇ , preferably 5 to 200 ⁇ , more preferably 5 to 100 ⁇ on.
- coextruded or chemically or physically pretreated plastic films for example acrylate-coated plastic films, can also be used as the carrier substrate.
- the carrier substrate may be coated with a bonding agent.
- orientation layers may also be provided to enhance the effect of the layer of liquid crystalline material.
- a first lacquer layer or a first layer of a liquid-crystalline material is applied to the carrier substrate.
- This first lacquer layer may be a radiation-curable lacquer layer or a thermoplastic lacquer layer and has an optically active structure.
- the radiation-curable lacquer can be, for example, a radiation-curable lacquer system based on a polyester, an epoxy or polyurethane system which contains two or more different photoinitiators known to the person skilled in the art, which can initiate curing of the lacquer system to varying degrees at different wavelengths.
- a photoinitiator can be activated at a wavelength of 200 to 400 nm, the second photoinitiator then activatable at a wavelength of 370 to 600 nm. Sufficient difference should be maintained between the activation wavelengths of the two photoinitiators to prevent over-excitation of the second photoinitiator while the first photoinitiator is activated.
- the region in which the second photoinitiator is excited should be in the transmission wavelength range of the carrier substrate used.
- electron radiation can be used for the main curing (activation of the second photoinitiator).
- a radiation-curable varnish a water-thinnable varnish can also be used. Preference is given to polyester-based paint systems.
- the impression of the surface structure ie the diffraction diffraction or relief structure, for example, at controlled temperature by means of a die or using a stamping die in the radiation-curable lacquer layer, which was pre-cured by activation of the first photoinitiator to the gel point and at the time of the impression in this Stadium is located.
- a water-dilutable radiation-curable lacquer is used, it is optionally possible to precede predrying, for example by means of IR radiators.
- thermoplastic varnish which is subsequently stabilized, consists of a base MMA or ethylcellulose or cycloolefin copolymer, modifiers being added to the base polymer to adjust the required thermoplastic properties or to adjust the subsequent stabilizability.
- modifiers include, for example, additives for adjusting the desired glass transition temperature, the range in which the paint is in the thermoplastic state, or modifiers for achieving permanent curing of the paint.
- the components are dissolved in a solvent, for example in aqueous solvents, water, alcohols, ethyl acetate, methyl ethyl ketone and the like or mixtures thereof.
- a solvent for example in aqueous solvents, water, alcohols, ethyl acetate, methyl ethyl ketone and the like or mixtures thereof.
- nitrocellulose for increasing the glass transition temperature is particularly advantageously added to a paint based on MMA.
- polyethylene waxes to a lacquer based on cycloolefin copolymers.
- Commercially available crosslinkers are added to an ethylcellulose-based lacquer to adjust the hardenability.
- the concentration of the base polymer in the finished paint depending on the base polymer, on the desired properties of the paint and on the type and concentration of the odifikatoren 4-50%.
- the structuring can take place by means of a conventional thermal embossing process.
- the layer thickness of the applied paint can vary depending on the requirements of the end product and thickness of the substrate and is generally between 0.5 and 50 ⁇ , preferably between 2 and 10 ⁇ , more preferably between 2 and 5 ⁇ .
- Optically active structures are understood here to be, in particular, diffraction-optically active structures, such as holograms, surface reliefs, diffraction structures, diffraction gratings, kinegrams, or embossings having a depth of 1 to 100 ⁇ m and the like.
- the first layer may also be a first liquid-crystalline layer having an optically variable effect.
- This liquid-crystalline layer may also consist of a printing ink containing pigments of liquid-crystalline material.
- the pigments consist of cholesteric or a mixture of nematic and cholesteric liquid crystals.
- a second layer of a (further) liquid-crystalline material is applied to the first layer.
- the first layer comprises a lacquer layer which has an optically active structure or an embossed carrier substrate
- this liquid-crystalline layer adapts to the structure of the optically active layer, the liquid crystals orient themselves in the structures and there is a color shift effect.
- the optically active effect is not recognizable.
- the second liquid-crystalline layer preferably has a different color shade than the first liquid-crystalline layer.
- an optionally light-absorbing layer is applied. This light-absorbing layer can be applied over the entire surface or partially.
- This layer may be formed of either a light absorbing ink, preferably a dark or black pigment ink or a light absorbing metallic coating.
- a light-absorbing metallic layer are preferably non-stoichiometric alumina and stoichiometric or unstoichiometric copper oxide in question.
- the light-absorbing metallic layer has a preferably dark to black coloration. The stronger the absorption of the background in the visible spectral range (350 - 800 nm), the stronger the visible optically variable effect.
- the light-absorbing layer can be replaced by a dark background on the object to be protected or by a corresponding colored adhesive coating.
- An adhesive coating preferably a self-adhesive coating, cold seal adhesive coating or heat seal adhesive coating, is applied to this structure.
- the security element is fixed on the object to be secured. If the structure is applied by means of a self-adhesive coating or a cold seal coating on an object to be secured, the adhesion between the layers a. and b. be less than the adhesion between the layers b., c. and d., and less than the adhesion of the adhesive layer on the object to be secured.
- the adhesion between the layers a. and b. can in a wide range by surface treatment of the layer a. be set.
- Suitable surface treatment methods are, for example, physical or chemical surface treatment, plasma (low-pressure or atmospheric plasma), corona or flame pretreatment or pressure pretreatment.
- a poorly adherent lacquer layer for example, poorly adhering layers based on Cylcloolefincopolymeren, nitrocellulose, acrylates, polyvinyl chloride, ethylene acrylate copolymers or styrene acrylates.
- chlorinated polyolefins are added to adjust the adhesion. The proportion of the chlorinated polyolefins in the composition may be 0 to 130% by weight relative to the base polymer.
- any coating systems whose adhesion is reduced by an additive for example Byk 394® , can be used.
- the poorly adhering lacquer layer points to the layer b. better adhesion than to layer a. on.
- the structure then separates between the poorly adherent lacquer layer and the layer a ..
- the security element shows a color shift effect.
- the color tone or the color shift effect corresponds to the color-shift effect of the layer of a liquid-crystalline one Material b .
- the hue or color shift effect of a mixed color corresponds to the color shift effects of the two liquid crystal layers.
- the first layer consists of a full-surface or partially embossed carrier substrate or a carrier substrate which has a full-surface or partial lacquer layer which has an optically active structure
- the optically active structure which is not recognizable at first, becomes positive in the manipulation test in the first (withdrawn) the second (remaining on the object to be secured) layer of liquid-crystalline material as a negative recognizable.
- the tint or color-shift effect of the second liquid-crystalline layer which differs from the color tone or color-shift effect of the intact security element, can be discerned after a manipulation attempt on the substrate to be secured.
- the security element in the form of a transfer element applied to the object to be secured the authenticity can be detected by means of an aid, for example by means of the so-called Tesa test.
- an adhesive strip is applied to the security element and then removed.
- the optically active structure introduced into the first lacquer layer is recognizable as a negative both in the lacquer layer remaining on the adhesive strip as positive and in the lacquer layer remaining on the object to be protected.
- the surface of the lacquer layer remaining on the object to be secured, as well as the surface of the peeled part is dry and does not feel sticky (dry peel effect).
- the security element according to the invention can be applied as a security element on packaging materials or used in ready-made form as labels in any form (square, round, oval) or as adhesive tape for securing objects or packaging.
- FIG. 1 shows a security element which has a carrier substrate 1 which is provided with a first layer of liquid-crystalline material 2. On this first layer of a first liquid-crystalline material 2, a second layer of a second different liquid-crystalline material 3 is applied.
- the light-absorbing layer 4 consists in this example of a black printing layer.
- the security element can be fixed on the object to be secured. In this case, when viewed, a superimposed color shift effect from both layers 2 and 3 can be seen.
- the first liquid-crystalline layer 2 separates from the second liquid-crystalline layer 3, since the adhesion between these two layers is set to be weaker than the adhesion of the remaining layers to one another.
- the hue or the color shift effect of the second liquid-crystalline layer 3 which differs from the hue or color-shift effect of the intact security element, can be recognized on the substrate to be secured.
- a lacquer layer 6, which has an optically active structure 7, is provided instead of the first liquid-crystalline layer.
- the light absorbing layer 4 is formed from a coating of unstoichiometric alumina. This light-absorbing layer 4 is then provided with a primer layer 9.
- a heat-sealing lacquer coating is provided as an adhesive coating 5, a heat-sealing lacquer coating.
- the optically active effect is not recognizable, provided that the refractive index of the lacquer layer 6 is adapted to the refractive index of the layer 3 of liquid-crystalline material. But it is recognizable by the layer 3 caused color shift effect.
- the optically active structure separates from the layer of liquid crystal material 3, the optically active structure is in both the first (stripped) layer as a positive and in the second (remaining on the object to be secured) layer of liquid-crystalline material recognizable as a negative.
- a layer of a liquid-crystalline material 3 is applied to an embossed carrier substrate, for example a hot stamping foil 8.
- an embossed carrier substrate for example a hot stamping foil 8.
- a partial metallic coating of unstoichiometric copper oxide is applied.
- the security element is fixed by means of a self-adhesive coating 5 on the object to be secured. In a manipulation attempt, the layer of liquid-crystalline material 3 separates from the hot stamping foil 8.
- the optically active effect is not recognizable, provided that the refractive index of the hot stamping foil 8 is adapted to the refractive index of the layer 3 of liquid-crystalline material. But it is recognizable by the layer 3 caused color shift effect.
- the optically active structure separates from the layer of liquid crystal material 3, the optically active structure of the hot stamping film is in both the first (stripped) layer as positive and in the second (remaining on the object to be secured) layer Liquid crystal material recognizable as a negative.
- FIG. 4 shows an embodiment which does not have a light-absorbing layer in its construction.
- the intensity of the visible color-shift effect is determined by the light absorption of the object to be protected.
- a security element according to this embodiment behaves analogously to the security element shown in FIG.
- the security element according to FIG. 5 is constructed analogously to the security element shown in FIG. 2, but with a partial layer 3 made of liquid-crystalline material.
- a security element according to this embodiment behaves essentially analogously to the security element shown in FIG. 2.
- the layer of liquid-crystalline materia! separates from the lacquer layer 6, which has an optically active structure 7. In those areas where the layer 3 is not present, the light-absorbing layer 4 remains on the layer 6.
- the lacquer layer 6 is provided with a partially optically active structure.
- this partial optically active effect is not recognizable, provided that the refractive indices of the lacquer layer 6 and the layer 3 are adapted to each other. If the two refractive indices are not matched to one another, the optically active effect can also be recognized in the intact state.
- the security element according to this embodiment behaves analogously to the security element shown in FIG.
- both the lacquer layer 6 and the optically active structure 7 may be partially provided.
- both the layer of liquid-crystalline material 3 and the light-absorbing layer 4 are partially made.
- the color shift effect is partially recognizable both when intact, as well as after a manipulation attempt.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Laminated Bodies (AREA)
- Credit Cards Or The Like (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
- Burglar Alarm Systems (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Optical Filters (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/310,153 US20170249875A1 (en) | 2014-07-17 | 2015-04-20 | Security element with color shift effect and manipulation detection |
CN201580027336.XA CN106463071A (zh) | 2014-07-17 | 2015-04-20 | 具有颜色变化效果和防篡改的安全元件 |
MX2017000787A MX2017000787A (es) | 2014-07-17 | 2015-04-20 | Elemento de seguridad con efecto de cambio de color y deteccion de manipulacion. |
EP15738262.3A EP3170168A1 (de) | 2014-07-17 | 2015-04-20 | Sicherheitselement mit farbkippeffekt und manipulationsnachweis |
JP2017502667A JP2017530380A (ja) | 2014-07-17 | 2015-04-20 | カラーシフト効果及び不正開封防止機能を備えたセキュリティエレメント |
RU2016146202A RU2016146202A (ru) | 2014-07-17 | 2015-04-20 | Защитный элемент с эффектом изменения цвета и индикацией манипулирования |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA565/2014 | 2014-07-17 | ||
ATA565/2014A AT516128B1 (de) | 2014-07-17 | 2014-07-17 | Sicherheitselement mit Farbkippeffekt und Manipulationsnachweis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016008553A1 true WO2016008553A1 (de) | 2016-01-21 |
Family
ID=53610843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/000823 WO2016008553A1 (de) | 2014-07-17 | 2015-04-20 | Sicherheitselement mit farbkippeffekt und manipulationsnachweis |
Country Status (8)
Country | Link |
---|---|
US (1) | US20170249875A1 (de) |
EP (1) | EP3170168A1 (de) |
JP (1) | JP2017530380A (de) |
CN (1) | CN106463071A (de) |
AT (1) | AT516128B1 (de) |
MX (1) | MX2017000787A (de) |
RU (1) | RU2016146202A (de) |
WO (1) | WO2016008553A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108711358A (zh) * | 2018-05-15 | 2018-10-26 | 中钞油墨有限公司 | 一种个性化防伪元件 |
RU2736433C1 (ru) * | 2017-07-10 | 2020-11-17 | Гизеке+Девриент Карренси Текнолоджи Гмбх | Продукт или продуктовая упаковка со структурным элементом |
EP4180220A1 (de) * | 2021-11-15 | 2023-05-17 | Hueck Folien Gesellschaft m.b.H. | Schichtverbund zur herstellung eines sicherheitsetiketts |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108461033A (zh) * | 2018-03-07 | 2018-08-28 | 厦门吉宏包装科技股份有限公司 | 一种新型防伪材料及其加工工艺 |
DE102019006977A1 (de) * | 2019-10-08 | 2021-04-08 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitselement- Transfermaterial, Verfahren zum Herstellen desselben und Verwendung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001093231A1 (en) | 2000-06-01 | 2001-12-06 | Optaglio Limited | Label and method of forming the same |
EP1684098A1 (de) * | 2003-10-28 | 2006-07-26 | NHK Spring Co., Ltd. | Diskriminationsmedium, verfahren zum diskriminieren des mediums, zu diskriminierender artikel und diskriminationseinrichtung |
US20070077404A1 (en) * | 2003-10-31 | 2007-04-05 | Hidekazu Hoshino | Discrimination medium and article to be discriminated |
EP1833034A1 (de) * | 2004-12-24 | 2007-09-12 | Nhk Spring Co.Ltd. | Identifikationsmedium, mit identifikationsmedium ausgestatteter artikel, identifizierungsverfahren und einrichtung |
EP2234091A1 (de) | 2009-03-27 | 2010-09-29 | Hueck Folien Ges.m.b.H. | Sicherheitselement, insbesondere Sicherheitsetikett mit Manipulationsnachweis |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006040227A1 (de) * | 2006-08-28 | 2008-03-06 | Giesecke & Devrient Gmbh | Sicherheitselement mit farbkippender Motivschicht |
DE102006049951A1 (de) * | 2006-10-19 | 2008-04-24 | Giesecke & Devrient Gmbh | Sicherheitselement für Flüssigkristallschichten |
ES2441352T3 (es) * | 2011-10-04 | 2014-02-04 | Hueck Folien Ges.M.B.H. | Elemento de seguridad con efecto de cambio de color, método para su fabricación y su utilización |
-
2014
- 2014-07-17 AT ATA565/2014A patent/AT516128B1/de not_active IP Right Cessation
-
2015
- 2015-04-20 US US15/310,153 patent/US20170249875A1/en not_active Abandoned
- 2015-04-20 RU RU2016146202A patent/RU2016146202A/ru not_active Application Discontinuation
- 2015-04-20 EP EP15738262.3A patent/EP3170168A1/de not_active Withdrawn
- 2015-04-20 WO PCT/EP2015/000823 patent/WO2016008553A1/de active Application Filing
- 2015-04-20 JP JP2017502667A patent/JP2017530380A/ja active Pending
- 2015-04-20 CN CN201580027336.XA patent/CN106463071A/zh active Pending
- 2015-04-20 MX MX2017000787A patent/MX2017000787A/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001093231A1 (en) | 2000-06-01 | 2001-12-06 | Optaglio Limited | Label and method of forming the same |
EP1684098A1 (de) * | 2003-10-28 | 2006-07-26 | NHK Spring Co., Ltd. | Diskriminationsmedium, verfahren zum diskriminieren des mediums, zu diskriminierender artikel und diskriminationseinrichtung |
US20070077404A1 (en) * | 2003-10-31 | 2007-04-05 | Hidekazu Hoshino | Discrimination medium and article to be discriminated |
EP1833034A1 (de) * | 2004-12-24 | 2007-09-12 | Nhk Spring Co.Ltd. | Identifikationsmedium, mit identifikationsmedium ausgestatteter artikel, identifizierungsverfahren und einrichtung |
EP2234091A1 (de) | 2009-03-27 | 2010-09-29 | Hueck Folien Ges.m.b.H. | Sicherheitselement, insbesondere Sicherheitsetikett mit Manipulationsnachweis |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2736433C1 (ru) * | 2017-07-10 | 2020-11-17 | Гизеке+Девриент Карренси Текнолоджи Гмбх | Продукт или продуктовая упаковка со структурным элементом |
CN108711358A (zh) * | 2018-05-15 | 2018-10-26 | 中钞油墨有限公司 | 一种个性化防伪元件 |
EP4180220A1 (de) * | 2021-11-15 | 2023-05-17 | Hueck Folien Gesellschaft m.b.H. | Schichtverbund zur herstellung eines sicherheitsetiketts |
Also Published As
Publication number | Publication date |
---|---|
AT516128A1 (de) | 2016-02-15 |
EP3170168A1 (de) | 2017-05-24 |
MX2017000787A (es) | 2017-05-04 |
CN106463071A (zh) | 2017-02-22 |
JP2017530380A (ja) | 2017-10-12 |
RU2016146202A (ru) | 2018-08-17 |
AT516128B1 (de) | 2018-05-15 |
US20170249875A1 (en) | 2017-08-31 |
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