EP3106561A1 - Safety label with manipulation verification - Google Patents
Safety label with manipulation verification Download PDFInfo
- Publication number
- EP3106561A1 EP3106561A1 EP15001815.8A EP15001815A EP3106561A1 EP 3106561 A1 EP3106561 A1 EP 3106561A1 EP 15001815 A EP15001815 A EP 15001815A EP 3106561 A1 EP3106561 A1 EP 3106561A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- security
- lacquer layer
- security label
- paper substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 239000010410 layer Substances 0.000 claims abstract description 110
- 239000004922 lacquer Substances 0.000 claims abstract description 79
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- 230000037452 priming Effects 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 9
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims description 2
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- 229910017518 Cu Zn Inorganic materials 0.000 description 1
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- LFOXEOLGJPJZAA-UHFFFAOYSA-N [(2,6-dimethoxybenzoyl)-(2,4,4-trimethylpentyl)phosphoryl]-(2,6-dimethoxyphenyl)methanone Chemical compound COC1=CC=CC(OC)=C1C(=O)P(=O)(CC(C)CC(C)(C)C)C(=O)C1=C(OC)C=CC=C1OC LFOXEOLGJPJZAA-UHFFFAOYSA-N 0.000 description 1
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 1
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- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 239000011148 porous material 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
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Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- 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
Definitions
- the invention relates to a security tag with tamper evidence, which is constructed on a paper support.
- these security labels are constructed on a carrier substrate of a flexible plastic film and then have a quite reliable triggering behavior.
- these security labels can also be constructed on a carrier substrate consisting of a paper or a composite of paper with a plastic film, although here the practice shows that in such labels the triggering of the tamper evidence does not work reliably.
- the composite can usually be more or less easily separated, so that such a security label is only partially secure against manipulation.
- the object of the invention was therefore to provide a security tag with tamper evidence, which is constructed on a paper substrate is, has the typical paper behavior and also allows reliable triggering of tamper evidence.
- the invention therefore relates to a tamper evident security label comprising a carrier substrate, a release lacquer layer and a functional layer, characterized in that the carrier substrate is a paper substrate provided with a primer lacquer layer closing the surface of the paper substrate.
- the invention is based on the finding that the separating lacquer layer applied according to the known prior art to the surface of the paper or else a functional layer, such as a colored lacquer layer or a metallic layer, penetrates into the paper and thus impedes the unambiguous triggering of the tampering detection.
- the paper substrate consists of pulp-free or cellulose-containing paper, this paper substrate having a weight per unit area of 20-500 g / m 2 , preferably 40-200 g / m 2 .
- the paper may also contain a proportion of plastic fibers.
- the surface of the paper substrate is now closed according to the invention by means of a priming lacquer layer, wherein this primer lacquer layer does not penetrate into the paper, but only closes the surface and thus prevents the penetration of the release lacquer layer or a functional layer in the paper.
- the release lacquer layer and / or the functional layer thus remains on the surface of the underlying lacquer layer and thus a trouble-free triggering of the tamper evidence is achieved.
- the priming lacquer layer can be used as a printed layer by means of a printing process, such as gravure printing, flexographic printing, screen printing and the like can be applied to the paper surface by roll coating methods such as a plain roll method or by brushing or spraying.
- a printing process such as gravure printing, flexographic printing, screen printing and the like
- roll coating methods such as a plain roll method or by brushing or spraying.
- 2-component polyurethane dispersions have proven to be suitable priming lacquer layers.
- Suitable polyurethane dispersions are, for example, dispersions based on aliphatic polyurethanes to which crosslinking agents and, if appropriate, defoaming agents and further additives, such as surfactants, are added.
- crosslinked acrylate / polyurethane hybrid dispersions to which additives are added are also suitable.
- This method is particularly suitable for papers having a Bendtsen roughness according to ISO 8791-2 of ⁇ 50 ml / min and a Bendtsen porosity according to ISO 5636-3 of ⁇ 70 ml / min.
- this primer lacquer layer is brittle, thereby having similar tear properties as the paper substrate.
- Particularly suitable are radiation-curable, in particular UV-curable, coatings, in particular based on acrylic methacrylates, for example trimethylolpropylene triacrylate, hydroxyethyl methacrylate, amine-modified polyfunctional polyethyl ether copolymers, acrylic epoxy resins, polyfunctional aliphatic urethane acrylates or mixtures thereof, to which one or more photoinitiators are added for crosslinking.
- Suitable photoinitiators are preferably bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide or mixtures of bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide with 1-hydroxycyclohexyl-phenyl ketone.
- such a lacquer layer is provided on a substrate made of a flexible plastic film, for example a polyester film, and then transferred to the paper substrate using an adhesive layer, for example a laminating adhesive layer or a hot-melt adhesive layer, under the action of pressure and / or temperature on the paper or sealed. Subsequently, the plastic film is peeled off.
- a flexible plastic film for example a polyester film
- an adhesive layer for example a laminating adhesive layer or a hot-melt adhesive layer
- the paper substrate treated in this way is then provided on the surface carrying the priming lacquer layer with a structure which permits tampering.
- a partial release lacquer layer is applied in a first step.
- a release lacquer layer in particular known, poorly adhering lacquer compositions, for example based on cycloolefin copolymers, nitrocellulose, acrylates, polyvinyl chloride, ethylene acrylate copolymers or styrene acrylates in a suitable solvent in question.
- chlorinated polyolefins are added to adjust the adhesion.
- the proportion of the chlorinated polyolefins in the composition may be 1 to 50% by weight, preferably 1 to 25% by weight, more preferably 1 to 15% by weight, relative to the base polymer.
- even very thinly applied polyamide, polyethylene, fluoropolymer wax layers or silicone coatings can be used as the release layer.
- the release lacquer layer may be applied in the form of a pattern, in the form of symbols, letters, numbers, images, patterns, logos, lines, guilloches, texts, writings or the like.
- the adhesion of the partial release lacquer layer can be adjusted as required such that the adhesion of the release lacquer layer to the priming lacquer layer is greater than the adhesion to the layer subsequently applied to this release lacquer layer.
- the adhesion of the release lacquer layer may be adjusted such that the adhesion of the release lacquer layer to the layer subsequently applied to the release lacquer layer is higher than the adhesion to the underlying lacquer layer.
- a functional layer is then applied to this partial release lacquer layer.
- a functional layer is understood as meaning a layer which may have security features, for example optical security features such as a defined color, or optically variable properties or reflective properties. This layer may be, for example, a print layer or a metallic layer.
- a printing layer has an optical security feature and is preferably colored, white or black.
- the optical properties of this layer can be visualized by visible dyes or pigments, luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV range or in the IR range, effect pigments, such as liquid crystals, pearlescent, metal pigments, bronzes and / or make multi-layer color change pigments and heat-sensitive inks or pigments accordingly.
- such a printing layer is embodied in a color contrasting with the color of the paper substrate.
- a metallic layer may be deposited by applying metals or metal compounds or alloys by PVD or CVD techniques.
- Suitable metals include, for example, Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe or their alloys, such as Cu-Al, Cu-Sn, Cu-Zn, iron alloys, steel, stainless steel or the like, as metal compounds, for example, stoichiometric or non-stoichiometric oxides or sulfides.
- the metallic layer can be made at least partially reflective.
- a reflective metallic layer may be combined with an optically active structure such as a diffraction structure, a surface relief, a diffraction grating, a hologram or a kinegram, and the like.
- the paper substrate may be provided with further security features on the surface opposite the base coat layer, for example with full-area or partial printing, optically active or optically variable security features, conductive or magnetic coatings and the like.
- the paper substrate itself may have security features, such as fluorescent fibers, dots, planchettes, and the like.
- the security label is then with the help of an adhesive layer, such as a self-adhesive coating on the secured
- Fixed object with the self-adhesive coating is located on the functional layer.
- the release lacquer layer In a manipulation attempt, for example by peeling, scraping and the like, separates the functional layer in the region in which the release coating is applied, from the underlying lacquer layer. Depending on the set adhesion conditions, the release lacquer layer may remain on the underlying lacquer layer or on the functional layer.
- the patterns formed by the formation of the release lacquer layer symbols, letters, numbers, images, lines, guilloches, texts, logos, and the like in the form of a negative of the printed release lacquer, on the part of the label which remains on the object to be backed up, these patterns, symbols, letters, numbers, images, lines, guilloches, texts, logos and the like appear in the form of a positive of the printed release varnish.
- the security label according to the invention can be used in any form (round, angularly oval) for securing objects, products, packaging, as a seal and the like.
- FIGS. 1 to 5 embodiments of the security label according to the invention are shown:
- FIG. 1 an embodiment according to the prior art is shown.
- a partial release lacquer layer 3 and then a functional layer 4 is applied. Due to the roughness of the paper surface 12 and the porosity of the paper substrate, the release lacquer layer 3 and possibly also the functional layer 4 in the regions 10 and in the regions 11 not coated with the release lacquer layer 3 completely or partially sinks the functional layer 4 into the paper substrate 1 one.
- FIG. 2 an embodiment of the invention is shown, in which the paper substrate 1 is provided with a primer lacquer layer 2, which is applied by a printing process. This creates a smooth surface 13. Onto this priming lacquer layer 2, a partial release lacquer layer 3 and then a functional layer 4 are applied. On the opposite surface of the priming lacquer layer 2 14 of the paper substrate 1, a further security feature 9 in the form of a partial layer, for example, a print applied. By means of a self-adhesive coating 7, the label is attached to the object 8 to be secured.
- a manipulation attempt ( Fig. 2a ) separates in the regions 10, the functional layer 4 partially from the underlying lacquer layer 2, wherein the release lacquer layer 3 may remain depending on the adhesion conditions on the underlying lacquer layer 2 or on the functional layer 4.
- the adhesion of the individual layers 2 and 4 to each other is so high that either the adhesive coating 7 is peeled off from the object to be secured or, as in FIG Fig. 2a shown, the functional layer 4 is removed from the adhesive layer 7.
- the patterns, symbols, letters, numbers, images, lines, guilloches, texts, lettering, logos and the like caused by the formation of the release lacquer layer 3 on the regions 10 are printed on the peeled paper substrate 1 with the underlying lacquer layer 2 in the form of a negative of the printed release lacquer 3 recognizable, on the part of the label, which remains on the object to be secured appear in the areas 11
- Patterns, symbols, letters, numbers, images, lines, guilloches, texts, logos, and the like in the form of a positive of the printed release varnish, as in FIG. 2a is shown.
- the release lacquer layer 3 remains on the underlying lacquer layer 2, since in this example the adhesion of the release lacquer layer 3 to the priming lacquer layer 2 is greater than to the functional layer 4.
- the release lacquer layer 3 can also remain on the functional layer 4, depending on the set adhesion conditions, in which case the adhesion of the release lacquer layer 3 to the underlying lacquer layer 2 is less than the adhesion of the release lacquer layer 3 to the functional layer 4.
- FIGS. 3a and 3b an embodiment is shown in which the paper substrate 1 is provided with a primer lacquer layer 2, which was applied by means of a transfer process.
- FIG. 3a shows the structure of the base material
- FIG. 3b the structure of the finished security label.
- the base material is according to FIG. 3a on the paper substrate 1 a formed on a plastic film 5 primer lacquer layer 2, which is anchored by means of a Kaschierklebetik 6 on the surface 12 of the paper substrate 1.
- the plastic film 5 is peeled off and, as in FIG. 3b represented, the partial release lacquer layer 3 and then the functional layer 4 applied.
- This structure shows the same tripping behavior in a manipulation attempt, as in the Figures 2 illustrated and described embodiments.
- FIG. 4 a security label 15 according to the invention with a printing 9 is shown in plan view.
- FIG. 5 shows this security label 15 after attempting to peel off.
- NeoRez R 600 23.1 kg BYK 016 0.011 kg
- Crossfinker CX 100 0.7 kg water 1.2 l
- the priming print layer is applied to the paper surface by a smooth roller method.
- the base printing layer is applied to the paper surface by means of a gravure printing process.
- Example 3 base transfer lacquer layer 1 (almost the original recipe, please change) Ebecryl 108 6.9 kg Ebecryl TMPTA 7.8 kg Ebecryl 83 10.0 kg Ebecryl 5129 10.17 kg Irgacure 819 1.88 kg
- the lacquer layer is produced on a flexible plastic film made of PET and then laminated to the paper substrate under the action of pressure and temperature by means of a laminating adhesive.
- the lacquer layer is produced on a flexible plastic film made of PET and then sealed onto the paper substrate under the action of pressure and temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
Abstract
Die Erfindung betrifft ein Sicherheitsetikett mit Manipulationsnachweis, aufweisend ein Trägersubstrat, eine Trennlackschicht und eine funktionelle Schicht, dadurch gekennzeichnet, dass das Trägersubstrat ein Papiersubstrat darstellt, das mit einer grundierenden Lackschicht versehen ist, die die Oberfläche des Papiersubstrats verschließt.The invention relates to a tamperproof security label comprising a carrier substrate, a release lacquer layer and a functional layer, characterized in that the carrier substrate is a paper substrate provided with a primer lacquer layer closing the surface of the paper substrate.
Description
Die Erfindung betrifft ein Sicherheitsetikett mit Manipulationsnachweis, das auf einem Papierträger aufgebaut ist.The invention relates to a security tag with tamper evidence, which is constructed on a paper support.
Sicherheitsetiketten mit Manipulationsnachweis sind aus dem Stand der Technik bekannt, beispielsweise aus
Im Allgemeinen sind diese Sicherheitsetiketten auf einem Trägersubstrat aus einer flexiblen Kunststofffolie aufgebaut und weisen dann ein durchaus zuverlässiges Auslöseverhalten auf.In general, these security labels are constructed on a carrier substrate of a flexible plastic film and then have a quite reliable triggering behavior.
Gemäß dem Stand der Technik können diese Sicherheitsetiketten auch auf einem Trägersubstrat bestehend aus einem Papier oder Verbunden von Papier mit einer Kunststofffolie aufgebaut sein, allerdings zeigt hier die Praxis, dass bei derartigen Etiketten das Auslösen des Manipulationsnachweises nicht zuverlässig funktioniert.According to the prior art, these security labels can also be constructed on a carrier substrate consisting of a paper or a composite of paper with a plastic film, although here the practice shows that in such labels the triggering of the tamper evidence does not work reliably.
Es besteht aber die Nachfrage nach Sicherheitsetiketten mit Manipulationsnachweis, die auf Papier aufgebaut sind und damit das typische Papierverhalten, also beispielsweise das typische Einreißen unter mechanischer Beanspruchung aufweisen.
Verwendet man als Trägersubstrat einen Verbund von Papier mit einer Kunststofffolie gehen diese typischen Papiereigenschaften völlig verloren.However, there is a demand for security tags with tamper evidence, which are constructed on paper and thus have the typical paper behavior, so for example, the typical tearing under mechanical stress.
If a composite of paper with a plastic film is used as the carrier substrate, these typical paper properties are completely lost.
Außerdem kann der Verbund meist mehr oder weniger leicht getrennt werden, sodass ein derartiges Sicherheitsetikett nur bedingt sicher gegen Manipulationen ist.In addition, the composite can usually be more or less easily separated, so that such a security label is only partially secure against manipulation.
Aufgabe der Erfindung war es daher, ein Sicherheitsetikett mit Manipulationsnachweis bereitzustellen, das auf einem Papiersubstrat aufgebaut ist, das typische Papierverhalten aufweist und außerdem ein zuverlässiges Auslösen des Manipulationsnachweises erlaubt.The object of the invention was therefore to provide a security tag with tamper evidence, which is constructed on a paper substrate is, has the typical paper behavior and also allows reliable triggering of tamper evidence.
Gegenstand der Erfindung ist daher ein Sicherheitsetikett mit Manipulationsnachweis, aufweisend ein Trägersubstrat, eine Trennlackschicht und eine funktionelle Schicht, dadurch gekennzeichnet, dass das Trägersubstrat ein Papiersubstrat darstellt, das mit einer grundierenden Lackschicht versehen ist, die die Oberfläche des Papiersubstrats verschließt.The invention therefore relates to a tamper evident security label comprising a carrier substrate, a release lacquer layer and a functional layer, characterized in that the carrier substrate is a paper substrate provided with a primer lacquer layer closing the surface of the paper substrate.
Die Erfindung beruht auf der Erkenntnis, dass die gemäß dem bekannten Stand der Technik auf die Oberfläche des Papiers aufgebrachte Trennlackschicht oder auch eine funktionelle Schicht, wie beispielsweise eine färbige Lackschicht oder eine metallische Schicht in das Papier eindringt und damit das eindeutige Auslösen des Manipulationsnachweises behindert.The invention is based on the finding that the separating lacquer layer applied according to the known prior art to the surface of the paper or else a functional layer, such as a colored lacquer layer or a metallic layer, penetrates into the paper and thus impedes the unambiguous triggering of the tampering detection.
Das Papiersubstrat besteht aus zellstofffreiem oder zellstoffhaltigem Papier, wobei dieses Papiersubstrat ein Flächengewicht von 20 - 500 g/m2, vorzugsweise 40 - 200 g/m2 aufweisen kann. Gegebenenfalls kann das Papier auch einen Anteil an Kunststofffasern enthalten.The paper substrate consists of pulp-free or cellulose-containing paper, this paper substrate having a weight per unit area of 20-500 g / m 2 , preferably 40-200 g / m 2 . Optionally, the paper may also contain a proportion of plastic fibers.
Die Oberfläche des Papiersubstrats wird nun erfindungsgemäß mittels einer grundierenden Lackschicht verschlossen, wobei diese grundierende Lackschicht nicht in das Papier eindringt, sondern nur die Oberfläche verschließt und damit das Eindringen der Trennlackschicht oder einer funktionellen Schicht in das Papier verhindert.
Die Trennlackschicht und/oder die funktionelle Schicht bleibt damit an der Oberfläche der grundierenden Lackschicht und somit wird ein problemloses Auslösen des Manipulationsnachweises erreicht.The surface of the paper substrate is now closed according to the invention by means of a priming lacquer layer, wherein this primer lacquer layer does not penetrate into the paper, but only closes the surface and thus prevents the penetration of the release lacquer layer or a functional layer in the paper.
The release lacquer layer and / or the functional layer thus remains on the surface of the underlying lacquer layer and thus a trouble-free triggering of the tamper evidence is achieved.
Die grundierende Lackschicht kann dabei als gedruckte Schicht mittels eines Druckverfahrens, wie beispielsweise Tiefdruck, Flexodruck, Siebdruck und dergleichen, durch Walzenauftragsverfahren wie Glattwalzenverfahren oder durch Aufstreichen oder Sprühen auf die Papieroberfläche aufgebracht werden.The priming lacquer layer can be used as a printed layer by means of a printing process, such as gravure printing, flexographic printing, screen printing and the like can be applied to the paper surface by roll coating methods such as a plain roll method or by brushing or spraying.
Als geeignete grundierende Lackschichten haben sich dabei 2-Komponenten Polyurethandispersionen erwiesen. Geeignete Polyurethandispersionen sind beispielsweise Dispersionen auf Basis aliphatischer Polyurethane, denen Vernetzungsmittel und gegebenenfalls Entschäumungsmittel und weitere Additive, wie Tenside zugesetzt werden.
Ferner sind auch vernetzte Acrylat/Polyurethanhybriddispersionen, denen Additive zugesetzt sind, geeignet.2-component polyurethane dispersions have proven to be suitable priming lacquer layers. Suitable polyurethane dispersions are, for example, dispersions based on aliphatic polyurethanes to which crosslinking agents and, if appropriate, defoaming agents and further additives, such as surfactants, are added.
Furthermore, crosslinked acrylate / polyurethane hybrid dispersions to which additives are added are also suitable.
Dieses Verfahren ist insbesondere bei Papieren geeignet, die eine Bendtsen Rauigkeit nach ISO 8791-2 von < 50 ml/min und eine Bendtsen Porosität nach ISO 5636-3 von < 70 ml/min aufweisen.This method is particularly suitable for papers having a Bendtsen roughness according to ISO 8791-2 of <50 ml / min and a Bendtsen porosity according to ISO 5636-3 of <70 ml / min.
Bei saugenden, also offenporigen Papiersubstraten mit einer Bendtsen Rauigkeit von > 50 ml/min und einer Bendtsen Porosität von > 70 ml/min hat es sich als vorteilhaft erwiesen, eine grundierende Lackschicht durch ein Transferverfahren auf die Papieroberfläche aufzubringen, da dadurch die Rauigkeit des Papiers besser ausgeglichen werden kann, sowie das Eindringen der grundierenden Lackschicht In das Papier vollständig verhindert wird.For absorbent, ie open-pore paper substrates with a Bendtsen roughness of> 50 ml / min and a Bendtsen porosity of> 70 ml / min, it has proved to be advantageous to apply a priming lacquer layer by a transfer process to the paper surface, since thereby the roughness of the paper can be better balanced, as well as the penetration of the priming paint layer is completely prevented in the paper.
Vorteilhafterweise ist diese grundierende Lackschicht spröde, dadurch weist sie ähnliche Reißeigenschaften wie das Papiersubstrat auf.
Hierbei eignen sich insbesondere strahlungshärtbare, insbesondere UVhärtbare Lacke, insbesondere auf Basis von Acryl-Methacrylaten, beispielsweise Trimethylolpropylen-triacrylat, Hydroxyethylmethacrylat, aminmodifizierten polyfunktionalen Polyethylethercopolymeren, Acryl-Epoxyharzen, mehrfunktionalen aliphatischen Urethanacrylaten oder Mischungen davon, denen zur Vernetzung ein oder mehrere Photoinitiatoren zugesetzt werden.Advantageously, this primer lacquer layer is brittle, thereby having similar tear properties as the paper substrate.
Particularly suitable are radiation-curable, in particular UV-curable, coatings, in particular based on acrylic methacrylates, for example trimethylolpropylene triacrylate, hydroxyethyl methacrylate, amine-modified polyfunctional polyethyl ether copolymers, acrylic epoxy resins, polyfunctional aliphatic urethane acrylates or mixtures thereof, to which one or more photoinitiators are added for crosslinking.
Als Photoinitiatoren kommen vorzugsweise Bis(2,4,6-trimethylbenzoyl)-phenylphosphinoxid oder Mischungen aus Bis(2,6-dimethoxybenzoyl)-2,4,4-trimethyl-pentylphosphinoxid mit 1-hydroxy-cyclohexyl-phenyl-keton in Frage.Suitable photoinitiators are preferably bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide or mixtures of bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide with 1-hydroxycyclohexyl-phenyl ketone.
Vorzugsweise wird eine derartige Lackschicht auf einem Substrat aus einer flexiblen Kunststofffolie, beispielsweise einer Polyesterfolie, bereitgestellt und anschließend auf das Papiersubstrat gegebenenfalls unter Verwendung einer Klebeschicht, beispielweise einer Kaschierklebeschicht oder einer Heißklebeschicht, unter Einwirkung von Druck und/oder Temperatur auf das Papier übertragen bzw. aufgesiegelt. Anschließend wird die Kunststofffolie abgezogen.Preferably, such a lacquer layer is provided on a substrate made of a flexible plastic film, for example a polyester film, and then transferred to the paper substrate using an adhesive layer, for example a laminating adhesive layer or a hot-melt adhesive layer, under the action of pressure and / or temperature on the paper or sealed. Subsequently, the plastic film is peeled off.
Das so behandelte Papiersubstrat wird anschließend auf der die grundierende Lackschicht tragenden Oberfläche mit einem Aufbau versehen, der einen Manipulationsnachweis erlaubt.The paper substrate treated in this way is then provided on the surface carrying the priming lacquer layer with a structure which permits tampering.
Dazu wird in einem ersten Schritt eine partielle Trennlackschicht aufgebracht. Als Trennlackschicht kommen insbesondere bekannte, schlecht haftende Lackzusammensetzungen, beispielsweise auf Basis von Cycloolefincopolymeren, Nitrocellulose, Acrylaten, Polyvinylchlorid, Ethylenacrylatcopolymeren oder Styrolacrylaten in einem geeigneten Lösungsmittel in Frage. Zur Einstellung der Haftung werden dabei vorzugsweise chlorierte Polyolefine zugesetzt. Der Anteil der chlorierten Polyolefine in der Zusammensetzung kann 1 - 50 Gew%, vorzugsweise 1 - 25 Gew%, besonders bevorzugt 1 bis 15 Gew% im Verhältnis zum Basispolymer betragen.
Ferner können auch sehr dünn aufgetragene Polyamid-, Polyethylen-, Fluorpolymerwachsschichten oder Silikonbeschichtungen als Trennschicht verwendet werden.For this purpose, a partial release lacquer layer is applied in a first step. As a release lacquer layer in particular known, poorly adhering lacquer compositions, for example based on cycloolefin copolymers, nitrocellulose, acrylates, polyvinyl chloride, ethylene acrylate copolymers or styrene acrylates in a suitable solvent in question. To adjust the adhesion, preferably chlorinated polyolefins are added. The proportion of the chlorinated polyolefins in the composition may be 1 to 50% by weight, preferably 1 to 25% by weight, more preferably 1 to 15% by weight, relative to the base polymer.
Furthermore, even very thinly applied polyamide, polyethylene, fluoropolymer wax layers or silicone coatings can be used as the release layer.
Die Trennlackschicht kann in Form eines Musters, in Form von Symbolen, Buchstaben, Zahlen, Bildern, Mustern, Logos, Linien, Guillochen, Texten, Schriftzügen oder dergleichen aufgebracht sein.The release lacquer layer may be applied in the form of a pattern, in the form of symbols, letters, numbers, images, patterns, logos, lines, guilloches, texts, writings or the like.
Die Haftung der partiellen Trennlackschicht kann je nach Erfordernis derart eingestellt sein, dass die Haftung der Trennlackschicht zur grundierenden Lackschicht größer ist als die Haftung zu der anschließend auf diese Trennlackschicht aufgebrachten Schicht.The adhesion of the partial release lacquer layer can be adjusted as required such that the adhesion of the release lacquer layer to the priming lacquer layer is greater than the adhesion to the layer subsequently applied to this release lacquer layer.
Alternativ kann die Haftung der Trennlackschicht derart eingestellt sein, dass die Haftung der Trennlackschicht zur nachfolgend auf die Trennlackschicht aufgebrachten Schicht höher ist als die Haftung zur grundierenden Lackschicht.Alternatively, the adhesion of the release lacquer layer may be adjusted such that the adhesion of the release lacquer layer to the layer subsequently applied to the release lacquer layer is higher than the adhesion to the underlying lacquer layer.
Durch die Einstellung dieser Haftungsverhältnisse wird sichergestellt, dass bei Manipulation eine Trennung an einer der Grenzschichten der Trennlackschicht erfolgt.The setting of these adhesion conditions ensures that, during manipulation, a separation takes place at one of the boundary layers of the release lacquer layer.
Auf diese partielle Trennlackschicht wird anschließend eine funktionelle Schicht aufgebracht. Unter einer funktionellen Schicht wird eine Schicht verstanden, die Sicherheitsmerkmale aufweisen kann, beispielsweise optische Sicherheitsmerkmale wie eine definierte Farbe, oder optisch variable Eigenschaften oder reflektierende Eigenschaften. Diese Schicht kann beispielsweise eine Druckschicht oder eine metallische Schicht sein.A functional layer is then applied to this partial release lacquer layer. A functional layer is understood as meaning a layer which may have security features, for example optical security features such as a defined color, or optically variable properties or reflective properties. This layer may be, for example, a print layer or a metallic layer.
Eine Druckschicht weist ein optisches Sicherheitsmerkmal auf und ist dabei vorzugsweise färbig, weiß oder schwarz ausgeführt. Die optischen Eigenschaften dieser Schicht lassen sich durch sichtbare Farbstoffe bzw. Pigmente, lumineszierende Farbstoffe bzw. Pigmente, die im sichtbaren, im UV-Bereich oder im IR-Bereich fluoreszieren bzw. phosphoreszieren, Effektpigmente, wie Flüssigkristalle, Perlglanz, Metallpigmente, Bronzen und/oder Multilayer-Farbumschlagpigmente und wärmeempfindliche Farben bzw. Pigmente entsprechend gestalten.A printing layer has an optical security feature and is preferably colored, white or black. The optical properties of this layer can be visualized by visible dyes or pigments, luminescent dyes or pigments which fluoresce or phosphoresce in the visible, in the UV range or in the IR range, effect pigments, such as liquid crystals, pearlescent, metal pigments, bronzes and / or make multi-layer color change pigments and heat-sensitive inks or pigments accordingly.
Besonders bevorzugt ist eine derartige Druckschicht in einer zur Farbe des Papiersubstrats kontrastierenden Farbe ausgeführt.Particularly preferably, such a printing layer is embodied in a color contrasting with the color of the paper substrate.
Eine metallische Schicht kann beispielsweise durch Aufbringen von Metallen oder Metallverbindungen oder Legierungen mittels PVD- oder CVD-Verfahren aufgebracht werden.
Als Metalle kommen beispielsweise wie z.B. Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe oder deren Legierungen, wie z.B. Cu-Al, Cu-Sn, Cu-Zn, Eisenlegierungen, Stahl, Edelstahl oder dergleichen in Frage, als Metallverbindungen beispielsweise stöchiometrische oder nichtstöchiometrische Oxide oder Sulfide.For example, a metallic layer may be deposited by applying metals or metal compounds or alloys by PVD or CVD techniques.
Suitable metals include, for example, Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe or their alloys, such as Cu-Al, Cu-Sn, Cu-Zn, iron alloys, steel, stainless steel or the like, as metal compounds, for example, stoichiometric or non-stoichiometric oxides or sulfides.
Die metallische Schicht kann zumindest teilweise reflektierend ausgeführt werden.The metallic layer can be made at least partially reflective.
Eine reflektierende metallische Schicht kann gegebenenfalls mit einer optisch aktiven Struktur beispielsweise mit einer Beugungsstruktur, einem Oberflächenrelief, einem Beugungsgitter, einem Hologramm oder einem Kinegramm und dergleichen kombiniert werden.Optionally, a reflective metallic layer may be combined with an optically active structure such as a diffraction structure, a surface relief, a diffraction grating, a hologram or a kinegram, and the like.
Das Papiersubstrat kann auf der der grundierenden Lackschicht gegenüberliegenden Oberfläche mit weiteren Sicherheitsmerkmalen versehen sein, beispielsweise mit einer vollflächigen oder partiellen Bedruckung, optisch aktiven oder optisch variablen Sicherheitsmerkmalen, leitfähigen oder magnetischen Beschichtungen und dergleichen.The paper substrate may be provided with further security features on the surface opposite the base coat layer, for example with full-area or partial printing, optically active or optically variable security features, conductive or magnetic coatings and the like.
Ferner kann das Papiersubstrat selbst Sicherheitsmerkmale aufweisen, beispielsweise fluoreszierende Fasern, Dots, Planchetten und dergleichen.Furthermore, the paper substrate itself may have security features, such as fluorescent fibers, dots, planchettes, and the like.
Das Sicherheitsetikett wird anschließend mit Hilfe einer Klebeschicht, beispielsweise einer Selbstklebebeschichtung auf dem zu sicherndenThe security label is then with the help of an adhesive layer, such as a self-adhesive coating on the secured
Gegenstand fixiert, wobei die Selbstklebebeschichtung auf der funktionellen Schicht situiert ist.Fixed object with the self-adhesive coating is located on the functional layer.
Bei einem Manipulationsversuch, beispielsweise durch Abziehen, Abschaben und dergleichen, trennt sich die funktionelle Schicht in jenem Bereich, in dem die Trennlackbeschichtung aufgebracht ist, von der grundierenden Lackschicht. Je nach den eingestellten Haftungsverhältnissen kann die Trennlackschicht dabei auf der grundierenden Lackschicht oder auf der funktionellen Schicht verbleiben.In a manipulation attempt, for example by peeling, scraping and the like, separates the functional layer in the region in which the release coating is applied, from the underlying lacquer layer. Depending on the set adhesion conditions, the release lacquer layer may remain on the underlying lacquer layer or on the functional layer.
In jedem Fall werden auf dem abgezogenen Papiersubstrat mit der grundierenden Lackschicht, die durch die Ausbildung der Trennlackschicht bedingten Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen in Form eines Negativs des gedruckten Trennlacks erkennbar, auf dem Teil des Etiketts, der auf dem zu sichernden Gegenstand verbleibt, erscheinen diese Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen in Form eines Positivs des gedruckten Trennlacks.In any case, on the peeled-off paper substrate with the underlying lacquer layer, the patterns formed by the formation of the release lacquer layer, symbols, letters, numbers, images, lines, guilloches, texts, logos, and the like in the form of a negative of the printed release lacquer, on the part of the label which remains on the object to be backed up, these patterns, symbols, letters, numbers, images, lines, guilloches, texts, logos and the like appear in the form of a positive of the printed release varnish.
Das erfindungsgemäße Sicherheitsetikett kann in beliebiger Form (rund, eckig oval) zur Sicherung von Gegenständen, Produkten, Verpackungen, als Siegel und dergleichen verwendet werden.The security label according to the invention can be used in any form (round, angularly oval) for securing objects, products, packaging, as a seal and the like.
In den
- 1 das Papiersubstrat1, the paper substrate
- 2 die grundierende Lackschicht2 the priming paint layer
- 3 die partielle Trennlackschicht3 the partial release lacquer layer
- 4 die funktionelle Schicht (mit Sicherheitsmerkmalen)4 the functional layer (with security features)
- 5 eine Kunststofffolie5 a plastic film
- 6 eine Kaschierklebeschicht6 a laminating adhesive layer
- 7 eine Selbstklebeschicht7 a self-adhesive layer
- 8 den zu sichernden Gegenstand8 the object to be secured
- 9 ein weiteres Sicherheitsmerkmal9 another security feature
- 10 Bereich der Trennlackschicht10 area of the release lacquer layer
- 11 Bereich der funktionellen Schicht11 area of the functional layer
- 12 die Papieroberfläche12 the paper surface
- 13 die glatte Oberfläche13 the smooth surface
- 14 die der grundierenden Lackschicht gegenüberliegende Oberfläche des Papiersubstrats14 the surface of the paper substrate opposite the priming lacquer layer
- 15 das erfindungsgemäße Sicherheitsetikett15 the security label according to the invention
- 16 der Teil des Etiketts, der mit dem Papiersubstrat abgezogen wird16 the part of the label that will be peeled off with the paper substrate
-
17 der Teil des Etiketts der auf dem zu sichernden Gegenstand 8 verbleibt17 the part of the label which remains on the
object 8 to be secured - 18 der Teil der funktionellen Schicht, der auf dem Gegenstand verbleibt und Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen in Form eines Positivs des gedruckten Trennlacks aufweistFigure 18 shows the portion of the functional layer remaining on the article having patterns, symbols, letters, numbers, images, lines, guilloches, texts, logos, and the like in the form of a positive of the printed release varnish
- 19 der Teil der funktionellen Schicht, der auf dem abgezogenen Teil des Etiketts verbleibt und Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen in Form eines Negativs des gedruckten Trennlacks aufweist.Figure 19 shows the portion of the functional layer remaining on the peeled-off portion of the label having patterns, symbols, letters, numbers, images, lines, guilloches, texts, logos, and the like in the form of a negative of the printed release lacquer.
In
Aufgrund der Rauigkeit der Papieroberfläche 12 und der Porosität des Papiersubstrats sinkt die Trennlackschicht 3 und ggf. teilweise auch die funktionelle Schicht 4 in den Bereichen 10 und in den nicht mit der Trennlackschicht 3 beschichteten Bereichen 11 die funktionelle Schicht 4 vollständig oder teilweise in das Papiersubstrat 1 ein.In
Due to the roughness of the
Dadurch wird ein zuverlässiges Auslösen des Manipulationsnachweises verhindert, da keine glatte Trennung der Schichten untereinander bzw. vom Papiersubstrat möglich ist.This prevents a reliable triggering of the tampering, since no smooth separation of the layers from each other or from the paper substrate is possible.
In
Auf diese grundierende Lackschicht 2 sind eine partielle Trennlackschicht 3 und anschließend eine funktionelle Schicht 4 aufgebracht.
Auf der der grundierenden Lackschicht 2 gegenüberliegenden Oberfläche 14 des Papiersubstrats 1 ist ein weiteres Sicherheitsmerkmal 9 in Form einer partiellen Schicht, beispielsweise eine Bedruckung, aufgebracht.
Mittels einer Selbstklebebeschichtung 7 wird das Etikett auf dem zu sichernden Gegenstand 8 befestigt.In
Onto this priming lacquer layer 2, a partial
On the opposite surface of the priming lacquer layer 2 14 of the
By means of a self-
Bei einem Manipulationsversuch (
In den Bereichen 11 ist die Haftung der einzelnen Schichten 2 und 4 untereinander so hoch, dass entweder die Klebebeschichtung 7 vom zu sichernden Gegenstand abgezogen wird oder, wie in
Durch die erfindungsgemäße Ausführungsform der grundierenden Lackschicht 2, die nicht in das Papiersubstrat 1 einsinkt, sondern dieses verschließt, erfolgt eine saubere Trennung der Schichten.
Die durch die Ausbildung der Trennlackschicht3 in den Bereichen 10 bedingten Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen werden auf dem abgezogenen Papiersubstrat 1 mit der grundierenden Lackschicht 2 in Form eines Negativs des gedruckten Trennlacks 3 erkennbar, auf dem Teil des Etiketts, der auf dem zu sichernden Gegenstand verbleibt, erscheinen in den Bereichen 11 diese Muster, Symbole, Buchstaben, Zahlen, Bilder, Linien, Guillochen, Texte, Schriftzüge, Logos und dergleichen in Form eines Positivs des gedruckten Trennlacks, wie in
Alternativ kann je nach eingestellten Haftungsverhältnissen die Trennlackschicht 3 auch auf der funktionellen Schicht 4 verbleiben, wobei dann die Haftung der Trennlackschicht 3 zur grundierenden Lackschicht 2 geringer ist als die Haftung der Trennlackschicht 3 zur funktionellen Schicht 4.The inventive embodiment of the underlying lacquer layer 2, which does not sink into the
The patterns, symbols, letters, numbers, images, lines, guilloches, texts, lettering, logos and the like caused by the formation of the
Alternatively, the
Die Einstellung der entsprechenden Haftungsverhältnisse erfolgt durch Zugabe geeigneter Zusätze, beispielsweise chlorierter Polyolefine und der entsprechenden Menge zum Basispolymer.The adjustment of the corresponding adhesion conditions takes place by addition of suitable additives, for example chlorinated polyolefins and the corresponding amount to the base polymer.
In den
Für das Basismaterial wird gemäß
Anschließend wird die Kunststofffolie 5 abgezogen und, wie in
Dieser Aufbau zeigt dasselbe Auslöseverhalten bei einem Manipulationsversuch, wie die in den
In
For the base material is according to
Subsequently, the
This structure shows the same tripping behavior in a manipulation attempt, as in the
In
Der Teil 16, der mit Papiersubstrat abgezogen wird, zeigt Buchstaben bzw. den Schriftzug "VOID" in Form eines Negativs des gedruckten Trennlacks.
Die grundierende Druckschicht wird mittels eines Glattwalzenverfahrens auf die Papieroberfläche aufgebracht.The priming print layer is applied to the paper surface by a smooth roller method.
Die grundierende Druckschicht wird mittels eines Tiefdruckverfahrens auf die Papieroberfläche aufgebracht.The base printing layer is applied to the paper surface by means of a gravure printing process.
Beispiel 3: grundierende Transferlackschicht 1 (fast die Originalrezeptur, bitte noch ändern.)
Die Lackschicht wird auf einer flexiblen Kunststofffolie aus PET hergestellt und anschließend auf das Papiersubstrat unter Einwirkung von Druck und Temperatur mittels eines Kaschierklebers kaschiert.The lacquer layer is produced on a flexible plastic film made of PET and then laminated to the paper substrate under the action of pressure and temperature by means of a laminating adhesive.
Die Lackschicht wird auf einer flexiblen Kunststofffolie aus PET hergestellt und anschließend auf das Papiersubstrat unter Einwirkung von Druck und Temperatur aufgesiegelt.The lacquer layer is produced on a flexible plastic film made of PET and then sealed onto the paper substrate under the action of pressure and temperature.
Claims (13)
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EP15001815.8A EP3106561A1 (en) | 2015-06-19 | 2015-06-19 | Safety label with manipulation verification |
PCT/EP2016/000614 WO2016202416A1 (en) | 2015-06-19 | 2016-04-14 | Security label with evidence of tampering |
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EP4180220A1 (en) * | 2021-11-15 | 2023-05-17 | Hueck Folien Gesellschaft m.b.H. | Layered composite for making a security label |
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Cited By (5)
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DE102020120274A1 (en) | 2020-07-31 | 2022-02-03 | Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg | Adhesive label with improved recyclability |
DE102021203749A1 (en) | 2021-04-15 | 2022-10-20 | Scribos Gmbh | Security label, series of security labels, authentication system with a series of security labels, and method of manufacturing a security label |
EP4180220A1 (en) * | 2021-11-15 | 2023-05-17 | Hueck Folien Gesellschaft m.b.H. | Layered composite for making a security label |
EP4202889A1 (en) * | 2021-12-23 | 2023-06-28 | SCRIBOS GmbH | Sealing label, method for producing a sealing label and use |
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