EP3234940A1 - Adhesive label - Google Patents
Adhesive labelInfo
- Publication number
- EP3234940A1 EP3234940A1 EP15817191.8A EP15817191A EP3234940A1 EP 3234940 A1 EP3234940 A1 EP 3234940A1 EP 15817191 A EP15817191 A EP 15817191A EP 3234940 A1 EP3234940 A1 EP 3234940A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiation
- compound
- layer
- label
- adhesive
- 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
- 239000000853 adhesive Substances 0.000 title claims abstract description 48
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 38
- 230000005855 radiation Effects 0.000 claims abstract description 59
- 150000001875 compounds Chemical class 0.000 claims abstract description 55
- 239000012790 adhesive layer Substances 0.000 claims abstract description 47
- 230000004044 response Effects 0.000 claims abstract description 24
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 82
- 239000012792 core layer Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 claims 1
- 230000001747 exhibiting effect Effects 0.000 abstract description 2
- 239000000700 radioactive tracer Substances 0.000 description 24
- 238000001514 detection method Methods 0.000 description 18
- XRWSZZJLZRKHHD-WVWIJVSJSA-N asunaprevir Chemical compound O=C([C@@H]1C[C@H](CN1C(=O)[C@@H](NC(=O)OC(C)(C)C)C(C)(C)C)OC1=NC=C(C2=CC=C(Cl)C=C21)OC)N[C@]1(C(=O)NS(=O)(=O)C2CC2)C[C@H]1C=C XRWSZZJLZRKHHD-WVWIJVSJSA-N 0.000 description 17
- 229940125961 compound 24 Drugs 0.000 description 17
- 238000007639 printing Methods 0.000 description 11
- 230000005284 excitation Effects 0.000 description 10
- 239000000049 pigment Substances 0.000 description 9
- -1 polyethylene Polymers 0.000 description 9
- 229920001296 polysiloxane Polymers 0.000 description 9
- 230000001012 protector Effects 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 6
- 230000032798 delamination Effects 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 230000005670 electromagnetic radiation Effects 0.000 description 5
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000011800 void material Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 206010065042 Immune reconstitution inflammatory syndrome Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 210000004905 finger nail Anatomy 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- ZWLUXSQADUDCSB-UHFFFAOYSA-N phthalaldehyde Chemical compound O=CC1=CC=CC=C1C=O ZWLUXSQADUDCSB-UHFFFAOYSA-N 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001466460 Alveolata Species 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005026 oriented polypropylene Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- 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
- B42D25/378—Special inks
- B42D25/382—Special inks absorbing or reflecting infrared light
-
- 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
- C09J201/00—Adhesives based on unspecified macromolecular compounds
- C09J201/02—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
-
- 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
- C09J7/22—Plastics; Metallised plastics
-
- 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
-
- 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
- G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/28—Presence of paper
- C09J2400/283—Presence of paper in the substrate
Definitions
- the present invention relates to adhesive labels and more particularly to self-adhesive labels, including safety labels.
- Self-adhesive security labels can be both authenticatable and tamper-proof.
- tamper-proof is meant in particular that they are destroyed in case of attempted separation (or peeling) of the substrate on which they were applied.
- An adhesive label has a generally printable or customizable structure on its front face, called a front face, and an adhesive layer on its back side.
- Some so-called “synthetic” adhesive labels comprise a polymer substrate, for example polyurethane (PU) or polyvinyl chloride (PVC), destructible.
- PU polyurethane
- PVC polyvinyl chloride
- the publication WO 2012/135085 discloses, on self-adhesive labels with a transparent front, a layer of adhesive and an invisible ink invisible under ambient light, arranged between the front and the adhesive layer, the luminescent ink emitting in visible under exposure to ultraviolet (UV) radiation.
- the front of this label is deliberately transparent or sufficiently transparent at the wavelengths of the UV and the visible on the one hand to allow the light, especially UV, to cross the front to reach the luminescence ink underneath and the exciting, and secondly to allow the wavelengths emitted by the ink in the visible of cross the frontal and so be seen in return.
- the frontal transmittance is at least 80% and preferably greater than 95% in the UV and the visible.
- Such a label has the disadvantage of requiring a transparent front, which can be binding on the aesthetic. Indeed, if the frontal is no longer transparent but opaque to visible light, it will absorb and / or diffuse the wavelengths of the visible and it will no longer be possible to see under UV irradiation the visible response of the luminescent ink present under the front, and thus to proceed to the verification of the authenticity of the label, the wavelengths of the visible not passing through the opaque front.
- This transparent front label made of polyethylene (PE), polyethylene terephthalate (PET), polyvinyl chloride (PVC), ortho-phthalaldehyde (OPA) or bi-oriented polypropylene (BOPP) is also an uniquely authenticatable label that does not present no features highlighting an attempt to falsify by destruction, tearing or cohesive rupture (delamination) of the frontal.
- PE polyethylene
- PET polyethylene terephthalate
- PVC polyvinyl chloride
- OPA ortho-phthalaldehyde
- BOPP bi-oriented polypropylene
- WO 2012/142658 discloses a self-adhesive tape carrying microscopic particles coded with identification data, the support of the tape being transparent to allow identification and visualization of the particles after application of the tape on an application medium.
- WO 2010/043821 discloses a security label, for product authentication, comprising a monolayer or multilayer transparent front cover, coated with a transparent layer of pressure-sensitive adhesive, receiving a visible impression under ambient lighting applied directly on the adhesive layer .
- any attempt at delamination by manual, mechanical, thermal or chemical means causes the irreversible destruction of the cohesive rupture printing of the adhesive layer, whose cohesive strength is lower the adhesive strength of the label on the product to be authenticated.
- the aim of the invention is to make it more difficult for fraud to break off a label, and it achieves this through an adhesive label comprising:
- an adhesive layer for bonding the label to a support, the cohesive force of the front end being less than the adhesive force of the adhesive layer; a compound having a determined behavior when illuminated by said IR radiation through the front end; electromagnetic response of said compound upon illumination by said IR radiation being detectable through the frontal.
- the compound also called "IR tracer” may have a specific electromagnetic response to IR radiation. It is a tracer of one type or a mixture of several tracers of different types.
- type of tracer is meant a compound having a given behavior in response to a given incident radiation.
- Different types of tracers differ in their excitation wavelength (IR radiation) and / or their (s) wavelengths of absorption or emission.
- Print front-end means a front end suitable for traditional printing (offset, rotary typography, rotational fxxography, rotogravure, screen printing, etc.) and / or digital printing (toner, inkjet, etc.) and / or variable printing (thermal transfer, direct thermal, laser, inkjet ).
- the printability of the front end may in particular be provided by an adhesion primer or a printability layer located on the face intended for printing and preferably on the front face opposite to the adhesive layer.
- the face provided with an adhesion primer or a printability layer is qualified printable face.
- IR radiation means a set of one or more discrete or non-discrete electromagnetic waves emitted in the wavelength range of the infrared, in particular between 700 nm and 5 mm.
- the IR radiation is preferably between 700 nm and 15 ⁇ m, more preferably between 780 nm and 3 ⁇ m and more preferably between 800 nm and 1 ⁇ m.
- Said IR radiation may be centered on a single wavelength or consist of a set of several wavelengths for example between 700 nm and 5 mm, preferably between 700 nm and 15 ⁇ m, more preferably between 780 nm and 3 ⁇ m and more preferably between 800 nm and 1 ⁇ m.
- These wavelengths can be emitted by one or more different sources, for example simultaneously or successively by one or more diodes.
- the term "specific electromagnetic response” means absorption or emission by the compound. In particular, these are, respectively, absorption by the compound of certain wavelengths of the incident IR radiation or emission by the compound of an electromagnetic radiation in the visible and / or invisible domain. for example in IR, in response to the excitation of the compound by the incident IR radiation.
- This electromagnetic response when invisible to the naked eye, will be detected using a suitable detector, including automatically. It is preferably an emission by the compound of an electromagnetic radiation in the visible and / or invisible domain, in particular in the IR, in response to the excitation of the compound by the incident IR radiation. .
- an adhesive layer for bonding the label to a support the cohesive force of the front end being less than the adhesive force of the adhesive layer on the support
- the adhesive label is in particular a self-adhesive label, preferably a security label.
- the adhesive label may have before its application on a support a protector, in particular silicone, on the adhesive layer on the opposite side to the front.
- the label according to the invention offers the advantage that after adhesion to the product to be authenticated, any attempt to detach it leads to delamination of the frontal by cohesive rupture thereof, whose cohesive strength is less than adhesive force of the adhesive layer, in particular on the support.
- the frontal may comprise a multilayer complex, having a core layer having cavities, and two skin layers coextruded with the core layer.
- the front end is preferably not completely transparent, especially opaque and in particular white.
- the frontal may be opaque to visible light and / or UV radiation. It is preferably opaque to visible light and its opacity in the visible range measured according to ISO 2471 standard "Paper and board - Determination of opacity on paper background - method of reflection in diffuse light" is in particular greater than 70% preferably greater than 80%.
- the front end is preferably transparent to IR radiation.
- IR radiation transparency means a transmittance of the wavelengths of this radiation DR. measured using an IR spectrophotometer greater than 70%.
- the frontend is preferably transparent to IR radiation in the wavelength range 700 nm - 15 ⁇ m, preferably 780 nm - 3 ⁇ m, more preferably 800 nm - 1 ⁇ m and more preferably in the range of wavelengths. excitation wave of said compound.
- the front may comprise at least one layer of thermoplastic material, especially polyolefin. It is preferably a layer of polyethylene (PE) and more preferably of high density polyethylene (HDPE).
- PE polyethylene
- HDPE high density polyethylene
- the front can be opaque to the type Polyart ® multilayer structure TE produced and sold by the company Arjobex; such a frontal shows a delamination in case of attempted delamination due in particular to its multilayer structure and alveolate (presence of voids).
- the detectable compound through the front end will remain on the delaminated portion of the label comprising the adhesive layer, in particular fixed on the application support .
- the other part of the delaminated label, including in particular the information printed on the printable side, can not be reused by the fraudster, because it will no longer exhibit the electromagnetic response under IR illumination characteristic of the presence of this compound.
- the adhesive layer may be a self-adhesive layer. It is preferably a pressure-sensitive adhesive.
- the compound is such that the IR radiation to which it corresponds belongs to the near IR (ie NIR), in particular in the wavelength range extending from 780 nm to 3 ⁇ m, preferably extending between 800 nm. and 1 ⁇ m.
- the near IR ie NIR
- the electromagnetic response of the compound is an emission by the compound of electromagnetic radiation
- it is preferably an emission in the field of IR, especially in the wavelength range extending from 700 nm at 15 ⁇ m, preferably in the NIR range between 780 nm and 3 ⁇ m and more preferably between 800 nm and 1 ⁇ m.
- the incident radiation may in particular be emitted by one or more emitting diodes of IR light.
- Said compound is preferably located with respect to the frontal on the same side as the adhesive layer.
- Said compound may be a soluble or insoluble photoluminescent compound. It can be implemented in an intermediate layer between the front end and the adhesive layer or in the adhesive layer itself. It may also be present on the entire surface of the label, which is preferred, or on only part of its surface.
- the intermediate layer or the adhesive layer containing said compound may also be loaded and / or colored, being careful to use fillers, pigments or dyes which do not absorb or little in the wavelengths chosen for the IR excitation and / or or which do not absorb either in the emission wavelengths of the compound, so as not to disturb the detection of the electromagnetic response of said compound.
- the adhesive layer or the intermediate layer is preferably devoid of carbon black and / or absorbing colored pigments in the IR, and in particular in the NIR.
- the label may include charges reflecting the IR radiation in the intermedian layer and / or the adhesive layer and / or an additional layer.
- the intermediate layer and / or the adhesive layer, in particular containing said compound may comprise charges reflecting the electromagnetic radiation.
- IR radiation for example such as: - Sicopal ® Black K 0095 from BASF,
- Such charges may also be used in an additional layer, preferably comprised, with respect to the layer containing said compound, on the opposite side to the front end. If the layer containing said compound is an intermediate layer, said additional layer is preferably also between the adhesive layer and the intermediate layer.
- Said compound may be luminescent, in particular fluorescent or phosphorescent under IR, being chosen in particular from photoluminescent compounds emitting in TIR and / or visible.
- the compound may be present in the adhesive layer, or in an intermediate layer between the adhesive layer and the front, as mentioned above.
- the compound is preferably present throughout the entire label.
- the IR radiation may be centered on a single wavelength or consist of a set of several wavelengths for example between 700 nm and 15 ⁇ m, preferably between 780 nm and 3 ⁇ m and more preferably between 800 nm. and 1 ⁇ m. These wavelengths can be emitted by one or more different light sources for the implementation of this method.
- the invention will be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which:
- FIG. 1 represents an example of an adhesive label according to the invention
- FIG. 2 represents the part of the label continuing to adhere to the application support after an attempt at detachment and cohesive rupture of the front end
- FIG. 3 is a view similar to Figure 1, a variant of the invention.
- the adhesive label 10 according to the invention, represented in FIG. 1, comprises a front surface 20 coated on one face 21 with a printability layer 22 and on the opposite face 23 with a layer 27 comprising a compound 24 having a specific response to the DR radiation.
- a pressure-sensitive adhesive layer 25 allows the adhesive label to be attached to an application medium.
- the layer 27 comprising the compound 24 is intermediate between the adhesive layer 25 and the front end 20.
- the adhesive label 10 may be coated on the side of the adhesive layer 25 opposite the front 20 by a removable silicone protector not shown, which is removed at the time of use. It may be for example a film, a kraft paper or a silicone non-stick glassine, for example.
- the adhesive label 10 may bear on the printability layer 22 an impression 26.
- the printability layer 22 may further comprise security elements for authentication of the tag, these security elements being chosen so as not to hinder the detection of the specific response to that of the compound present in the layer 27 when the compound is illuminated by IR radiation through the frontal.
- the security elements may have a so-called first, second or third level security feature.
- Topic-level security feature means a security feature visible to the naked eye, in daylight or artificial light, without the use of a particular device.
- a first-level security feature can be a variable optical effect, such as for example producing interferential platelet particles, magnetic or not, liquid and / or oriented and / or photonic crystals, a holographic element or a network of lenses in combination with underlying pattern, all of which are thus adapted to form a security element with a first-level feature.
- “Second-level security feature” means an optical effect that is always visible to the naked eye, but only with the aid of a relatively simple device, such as a lamp or pointer emitting in the ultraviolet light ( UV), the visible or the infrared (IR) or a magnifying glass or a decoding tool of the optical filter type or a polarizing filter.
- a security element with a second level characteristic is luminescent, that is to say, for example, that it has a specific emission in the visible under the lighting of a Wood lamp emitting in the light. ultraviolet, for example still at a wavelength of 365 nm.
- a security element with a second level characteristic is an anti-stok element, that is to say having a specific emission in the visible under the illumination of an IR pointer, for example to a length 980 nm wave.
- a second-level feature may also be a feature of a security element that is revealed in case of heat and / or friction input.
- third-level security feature is meant a security feature requiring for its detection a dedicated detection device.
- An element exhibiting a third-level security feature is for example capable of generating a specific signal when it is simultaneously or not subjected to one or more sources of external stress. This signal is processed and analyzed by a dedicated detection device for authentication or identification of the security element.
- Other examples of security elements having a third-level security feature are tracers or materials in the form of active materials, particles or fibers, capable of generating a specific signal when these tracers are subject to a mechanical, thermal, photonic, optronic, electrical, magnetic or electromagnetic stress.
- the security element or elements present in or on the printability layer are the security element or elements present in or on the printability layer.
- the security element or elements affixed to the printability layer 20 may be:
- embossed image also called embossed image
- partially reflective refractive element
- variable optical effect layer based on interference pigments or liquid crystals.
- the security element or elements may also be in the form of particles, agglomerates, fibers integrated in the printability layer 22.
- the security element or elements integrated in the printability layer 22 may be
- particles or agglomerates of particles based on Hilite-type pigments or dyes especially those described in application EP 0226367, visible or non-visible to the naked eye, in particular luminescent,
- security fibers in particular metallic, magnetic (with soft magnetism and / or hard), absorbing or excitable in the field of ultraviolet, visible or infrared, and in particular near infrared (NIR), an automatically detectable tracer having specific and measurable characteristics of luminescence (eg fluorescence or phosphorescence), light absorption (eg ultraviolet, visible or infrared), Raman activity, magnetism, microwave interaction, RF interaction, interaction with X-rays, XTerahertz or electrical conductivity.
- luminescence eg fluorescence or phosphorescence
- light absorption eg ultraviolet, visible or infrared
- Raman activity magnetism
- microwave interaction RF interaction
- X-rays XTerahertz or electrical conductivity
- the front end 20 is in the example of the polymer type and for example consists of a multilayer structure made by coextrusion, for example of the type marketed by the company ARJOBEX under the name Polyart ® TE which has a density of less than 1 g. cm -3 and preferably less than 0.6 g.cm -3 .
- Multilayer structures of this type are described in particular in publication WO 2009/083690. It is preferably a front end corresponding to the structures described in publications WO 2004/007196 and WO 2012/035284, and incorporated herein by reference.
- the frontal is non-opaque to IR radiation.
- its transmittance, measured in% at IR radiation in the range of 800 nm to 1 ⁇ m is greater than or equal to 70%.
- opacity in visible light measured according to ISO 2471 "Paper and board - Determination of opacity on paper background - method of reflection in diffuse light” may be greater than or equal to 80%.
- the front end 20 comprises, for example, a core layer 20a having voids, and two skin layers 20b and 20c and a printability layer at least on its surface. external face opposite to the adhesive layer, said printability layer being intended to be printed.
- the core layer 20a may be thicker than each of the skin layers 20b or 20c.
- the core layer 20a may have a thickness greater than 10 microns, better 50 microns, more preferably 75 microns, and each skin layer 20b or 20c less than 50 microns thick, better 15 microns thick, more preferably 10 microns thick.
- the front end 20 may have a total thickness of between 70 and 120 ⁇ m.
- the core layer 20a has voids as indicated above.
- the void rate of the front end 20 may be between 2 and 7%, preferably between 4 and 6%, based on the total volume of the front end.
- the skin layers 20b and 20c are preferably devoid of voids opening on their surface.
- the determination of the void ratio can in particular be done after cutting the frontal ion beam (Argon ions for example), which limits the appearance. scratches, fills, tears or compressions on the frontal and preserve the morphology of the frontal, thus promoting the determination of porosity.
- Argon ions for example
- the void ratio can be calculated as the ratio of the total area of voids on the section to the total area of the section, using the following formula:
- the coextrusion of the different layers 20a to 20c of the front end 20, during its manufacture, can be carried out at a temperature for example between 150 and 250 ° C.
- the surface of the frontal can be subjected to oxidation by a treatment by electric discharges, corona type. Such a treatment makes it possible to obtain a polar surface as well as the wettability required to easily accept the coatings that the front end is brought to receive.
- the front 20 as well as the printability layer 22 are sufficiently transparent to a certain IR radiation to enable the detection of the specific response of the compound 24 to this IR radiation, this detection being advantageously able to take place through the front face 20 and the layer of printability 22.
- compound 24 is an IR luminescent tracer, which when excited by IR radiation, produces light in the IR, which light can be detected through the front end 20 and the printability layer 22, which are sufficiently transparent to this radiation to allow its detection.
- the front end 20 and / or the printability layer 22 are opaque to UV and / or visible radiation, and transparent to IR radiation, in particular in the range between 700 nm. and 15 ⁇ m.
- the presence of compound 24 is undetectable in visible light on the printing side 26.
- the layer 27 which contains the compound 24 is for example a layer of the same adhesive as that constituting the layer 25.
- the front end 20 undergoes a cohesive rupture and part of it remains attached to the application support S, as illustrated in FIG. 2.
- the other part, which has delaminated, can certainly be reused by the fraudster, but does not wear the layer 27 loaded with the compound 24 and therefore will not exhibit the characteristics of the initial label when subjected to IR radiation to detect the compound 24.
- the label 10 has a single adhesive layer 27 which contains the compound 24 and comes into contact with the application medium when using the label.
- the compound 24 may be a luminescent compound which fluoresces, when excited by IR radiation, in visible light, the front end 20 and the printability layer 22 being in this case sufficiently transparent to this visible light to enable detection of this one during the IR excitation.
- the compound 24 can re-emit in the UV, the front 20 and the printability layer 22 being in this case sufficiently transparent to this UV radiation to allow its detection.
- Compound 24 can have a determined behavior when illuminated by said IR radiation through the frontal and be present under the frontal 20 non-homogeneously, being for example unequally distributed, for example in the form of a particular pattern .
- the front 20 and the printability layer 22 are sufficiently transparent to the IR radiation so that the latter can gain the compound 24, to allow to observe a non-uniform reflection of this IR radiation on the layer containing the compound 24 and thus discern the pattern formed by it.
- the compound 24 is deposited by printing under the front end 20, or alternatively on the adhesive, in the form of a pattern or an array of patterns.
- the self-adhesive label according to the invention may be affixed to products or articles whose origin or membership is desired to authenticate in order to provide an authentication function.
- This label can also be used as a witness opening or tampering with a container whose content integrity is to be protected in order to provide an infalsification function.
- the frontal may alternatively be cellulosic in nature. This is for example a paper whose opacity is provided by non-absorbent loads in TIR. These include a paper free of titanium dioxide.
- the front end is predominantly based on polyolefin, especially polyethylene, which has a high transparency at the IR, with only a few thin and isolated absorption bands.
- the adhesive layer 25, on its face opposite to the front end 20, of the label is provided with a protector comprising a non-adherent coating, in particular a silicone coating.
- a protector comprising a non-adherent coating, in particular a silicone coating. This is the support (or “backing") on which the labels are placed before their application on the medium to be secured.
- the adhesive label according to the invention comprises a filled or colored layer, in particular adhesive and preferably colored. It may be the layer 27, the adhesive layer 25 or an additional layer located on the face of the adhesive layer 25 opposite to the front end 20, between the layers 25 and 27 or on the face of the front end 23 located on the side of the adhesive layer 25. It will be particularly important to use fillers, pigments or dyes which do not absorb or little in the wavelengths retained for the IR excitation, so as not to disturb the detection of the response electromagnetic said compound, especially when the colored layer is the layer 27 comprising the compound 24 or when the colored layer is located on the face of the front 23 located on the side of the adhesive layer 25.
- layer 27 is colored.
- it comprises pigments or dyes which do not absorb or little in the wavelengths retained for IR excitation.
- This Polyart ® TE is an opaque white Polyart ® grade with a density of less than 0.6 g.cm -3 , and low internal cohesion due to a high void content.
- HDPE polyethylene the majority constituent of this material, is transparent at infrared wavelengths between 700 nm and 15 ⁇ m, with some thin absorption lines at wavelengths different from those generally used for detection, which allows to consider its use as a base material to achieve a front transparent to the IR radiation of the detector.
- the Polyart ® TE has a transmittance greater than 70% in the wavelengths of the IR between 700 nm and 2 ⁇ m used for the detection of the compound through the frontal.
- the labels are applied to wine bottle caps.
- the correct tracer authentication is verified through the front end with the Reveal TM detector operating in the TIR wavelengths between 700 nm and 2 ⁇ m.
- the front-end is used to perform the label, a support sold under the trademark Polyart ® TE grammage 60 g / m 2 provided on one face of a printability layer suitable for printing traditional (offset, heliogravure, screen printing %) on its outer face.
- Labels laboratory is achieved according to the invention using a front Polyart ® TE and Microtag tracer of Brandwatch society.
- the manufacturing involves the following steps:
- HDPE high-density polyethylene
- the correct tracer authentication is verified through the front panel with the Reveal TM detector.
- This Polyart ® TE inkjet is a white and opaque Polyart ® label grade with a density of less than 0.6 g.cm-3, and low internal cohesion due to a high void content.
- Laboratory labels is carried out according to the invention using a front Polyart ® TE and a tracer sold by Stardust including an IR / ER tracer having a specific electromagnetic response between 1000 and 2000 nm under excitation of a diode IR light emitting at 940 nm, therefore in a wavelength range in which the Polyart ® TE has a high percentage of transmission.
- the manufacturing involves the following steps:
- the amounts of tracer to be incorporated in the intermediate layer are determined in order to have a good detection of the tracer through the front end with the IRIS detector of the Stardust company, through the thickness of the Polyart ® TE front end.
- the labels are applied to coated white cardboard cases.
- the correct tracer authentication is verified through the front of the label with an IRIS reader.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1462986A FR3030856B1 (en) | 2014-12-19 | 2014-12-19 | ADHESIVE LABEL |
PCT/EP2015/079895 WO2016096924A1 (en) | 2014-12-19 | 2015-12-15 | Adhesive label |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3234940A1 true EP3234940A1 (en) | 2017-10-25 |
Family
ID=52824368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15817191.8A Pending EP3234940A1 (en) | 2014-12-19 | 2015-12-15 | Adhesive label |
Country Status (7)
Country | Link |
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US (1) | US10283017B2 (en) |
EP (1) | EP3234940A1 (en) |
JP (1) | JP6771481B2 (en) |
CN (1) | CN107251129B (en) |
FR (1) | FR3030856B1 (en) |
TW (1) | TWI709119B (en) |
WO (1) | WO2016096924A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11060945B2 (en) * | 2018-05-22 | 2021-07-13 | Paxxus, Inc. | Ultra-violet fluorescing sealant |
GB2588205B (en) * | 2019-10-15 | 2021-12-22 | De La Rue Int Ltd | Security print media |
FR3115629A1 (en) * | 2020-10-22 | 2022-04-29 | BACAM Partners Limited | Luminous label, and associated reactivation device |
Family Cites Families (21)
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EP0226367B1 (en) | 1985-12-05 | 1990-02-28 | The Wiggins Teape Group Limited | Security paper |
US5042842A (en) | 1990-06-26 | 1991-08-27 | Avery International Corporation | High security label |
US5605738A (en) | 1993-09-30 | 1997-02-25 | Angstrom Technologies, Inc. | Tamper resistant system using ultraviolet fluorescent chemicals |
US6326071B1 (en) | 1997-02-06 | 2001-12-04 | Nashua Corporation | Reverse thermal label |
AU1368200A (en) * | 1998-11-23 | 2000-06-13 | Jean-Marc Francois | A pressure-sensitive adhesive laminate, a method and a device for modifying an initial release force in such laminate |
FR2830115B1 (en) * | 2001-09-21 | 2003-11-28 | Francois Trantoul | ANTIFALSIFICATION VIGNETTE FOR LAYING VARIABLE INSCRIPTIONS ON A MARKING MEDIUM, PROCESS AND MARKED MEDIUM OBTAINED |
DE10163589A1 (en) * | 2001-12-21 | 2003-08-07 | Tesa Ag | Self-adhesive labels, processes for producing them and their use |
GB0216052D0 (en) | 2002-07-10 | 2002-08-21 | Arjobex Ltd | Synthetic paper label |
US7709417B2 (en) * | 2003-11-14 | 2010-05-04 | Kiwa Chemical Industry Co., Ltd. | Security sticker and method for manufacturing the same |
FR2862906B1 (en) * | 2003-12-01 | 2006-04-07 | Francois Trantoul | DEVICE AND METHOD FOR SECURELY PROTECTING AN OBJECT SURFACE BY DELAMINABLE ADHESIVE FILM AND METHOD OF MANUFACTURING |
DE102005061124A1 (en) * | 2005-12-19 | 2007-06-21 | Tesa Ag | Label with increased counterfeit security |
EP2222810A1 (en) * | 2007-12-18 | 2010-09-01 | UPM Raflatac Oy | Label, a method in labelling and use of an adhesive |
FR2925864B1 (en) | 2007-12-28 | 2012-08-31 | Arjowiggins Licensing Sas | SAFETY SHEET COMPRISING A COEXTRUDE SUPPORT |
FR2937456B1 (en) | 2008-10-17 | 2012-01-27 | Plasto | DEVICE, IN PARTICULAR LABEL, OF SAFETY FOR AUTHENTICATING A PRODUCT. |
TWM399378U (en) * | 2010-04-01 | 2011-03-01 | Univ Nat Formosa | Infrared photograph detection using in an article anti-fake system |
GB2483653B (en) | 2010-09-14 | 2017-03-22 | Arjobex Ltd | Polymeric label material |
EP2683546A4 (en) * | 2011-03-11 | 2014-10-15 | Upm Raflatac Oy | A laminate web |
BR112013024175A2 (en) | 2011-03-25 | 2016-12-13 | Avery Dennison Corp | authentication tag |
WO2012142658A1 (en) | 2011-04-20 | 2012-10-26 | Ian Peter Allen | Security identification |
CN202271576U (en) * | 2011-10-31 | 2012-06-13 | 桐乡越顺经编有限公司 | Super soft sofa cloth |
FR2999770B1 (en) | 2012-12-18 | 2018-05-04 | Finega | AUTOCOLLATING LABEL WITH SAFETY MESSAGE MASK |
-
2014
- 2014-12-19 FR FR1462986A patent/FR3030856B1/en active Active
-
2015
- 2015-12-15 US US15/537,830 patent/US10283017B2/en active Active
- 2015-12-15 CN CN201580076660.0A patent/CN107251129B/en active Active
- 2015-12-15 JP JP2017550996A patent/JP6771481B2/en active Active
- 2015-12-15 EP EP15817191.8A patent/EP3234940A1/en active Pending
- 2015-12-15 WO PCT/EP2015/079895 patent/WO2016096924A1/en active Application Filing
- 2015-12-18 TW TW104142829A patent/TWI709119B/en active
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2016096924A1 * |
Also Published As
Publication number | Publication date |
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TW201633271A (en) | 2016-09-16 |
US10283017B2 (en) | 2019-05-07 |
US20180005551A1 (en) | 2018-01-04 |
JP2018504649A (en) | 2018-02-15 |
WO2016096924A1 (en) | 2016-06-23 |
CN107251129B (en) | 2020-05-19 |
JP6771481B2 (en) | 2020-10-21 |
CN107251129A (en) | 2017-10-13 |
FR3030856A1 (en) | 2016-06-24 |
TWI709119B (en) | 2020-11-01 |
FR3030856B1 (en) | 2018-02-02 |
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