EP3606766A1 - Élément de sécurité et procédé de fabrication associé - Google Patents

Élément de sécurité et procédé de fabrication associé

Info

Publication number
EP3606766A1
EP3606766A1 EP18717829.8A EP18717829A EP3606766A1 EP 3606766 A1 EP3606766 A1 EP 3606766A1 EP 18717829 A EP18717829 A EP 18717829A EP 3606766 A1 EP3606766 A1 EP 3606766A1
Authority
EP
European Patent Office
Prior art keywords
coating
region
area
security element
contour line
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.)
Granted
Application number
EP18717829.8A
Other languages
German (de)
English (en)
Other versions
EP3606766B1 (fr
Inventor
Christian Fuhse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3606766A1 publication Critical patent/EP3606766A1/fr
Application granted granted Critical
Publication of EP3606766B1 publication Critical patent/EP3606766B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B42D25/373—Metallic materials
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers

Definitions

  • the invention relates to a motif area provided with a first coating providing the motif and a background area provided with a second coating different from the first coating and providing the background.
  • the invention further relates to a value document with a security element.
  • the invention also relates to a manufacturing method in which a motif area is provided with a first coating which provides the motif, and a background area is provided with a second coating different from the first coating, which provides the background.
  • Security features for banknotes contain motifs, such as symbols, images or true color images, which are to achieve a particularly good visibility and anti-counterfeiting security.
  • security elements are known in particular whose motifs are formed with respect to the background by structured, different coatings.
  • Such security elements use, for example, a coating which has a viewing-angle-dependent color effect for the design of the motif and a background-independent coating for the background.
  • the register accuracy of the coating is of considerable importance. This places demands on appropriate structuring techniques, such as, for example, photolithographic processes or the printing with so-called wash paints.
  • the invention is therefore based on the object to improve a security element, a value document and a manufacturing method of the type mentioned so that the manufacturability facilitates and at the same time the quality of the security element is increased.
  • a security element for producing value documents, such as banknotes, checks or the like, which shows a motif in front of a background.
  • the motif is created by a motif area, which is provided with a first coating.
  • the background is provided by a background region of the security element, which is provided with a second coating different from the first coating.
  • the different coatings contribute to the visual difference between the subject and the background, but need not be the only characteristics of the subject area or background area that create the visual difference. Possible options will be explained later. Background area and subject area are separated by an outline area. This is formed by a relief structure having a geometry which is designed so that the relief structure at least partially absorbs light, in plan view, for. B. appears dark.
  • the relief structure serves to absorb register fluctuations during the application of the first and / or second coating in that the relief structure lies beneath the edges of the first coating and / or second coating and in each case with one of the two coatings similar, preferably has a dark appearance.
  • a motif area is provided with a first coating and provides the motif.
  • a background area is provided with a different second coating and provides the background.
  • an outline area is provided which delimits the motif area and the background area from one another, wherein the contour line area is formed by a relief structure.
  • the relief structure is arranged to catch the register variations of the first and / or second coating.
  • the contour line region is produced before the application of the first and / or second coating and is covered by one or both coatings.
  • the contour area Due to its relief structure, the contour area creates a clearly recognizable outline, which separates the motif and background areas from each other. Due to the relief structure, the real edge of the first and / or second coating is not recognizable. The optically effective part of the motif area and the background area thus ends in each case at the edge of the relief structure of the contour line area, irrespective of any register fluctuations during the application of the first and / or second coating. In other words, fluctuations in the boundary line between the two coatings are hidden in the outline, which, independently of the first and / or second coating, due to their geometry of the relief structure, the brightness and / or color contrast to the adjacent motif and background areas causes.
  • the effect of the contour area requires a certain width of the contour area and thus of the relief structure, which is selected such that it covers register fluctuations during the application of the first and / or second coating.
  • a range of 0.1 mm to 1.0 mm has proven to be advantageous in this case, a range of about 0.3 mm to 0.7 mm as particularly advantageous since register fluctuations without further effort in the structuring of the coatings on the Half of these values, z. B. can be limited to +/- 0.2 mm.
  • the relief structure of the contour area is designed so that it causes a contrast in terms of brightness or color between the outline area and the subject and background area due to their geometry.
  • the geometry is expediently chosen such that the contrast is largely independent of whether the first or second coating is located on the relief structure.
  • the relief structure comprises a sub-wavelength grating or a moth-eye structure that is designed to absorb light.
  • the first and the second coating abut each other at a boundary line.
  • This boundary line lies above the relief structure of the contour line area.
  • the first and second coatings are chosen so that the best possible contrast between the subject area and the background area is achieved.
  • the security element also has the advantage that the motif is easier to recognize because it is delimited from the background by a high-contrast outline.
  • the motif and / or background area likewise with a then coated relief structure, which, however, differs from that of the contour line area, so that the brightness and / or color contrast exists between the contour line area on the one hand and the motif area and the background area on the other .
  • the contrast between outline area and motif area and background area can then also be enhanced, for example, by appropriate selection of the profile geometry of the relief structure.
  • the relief structures of the motif and background areas are coated, e.g. metallic or high-refractive.
  • relief structures with micromirrors are known from the prior art (see DE 102010049617 A1). These micromirrors can be arranged in pixels which each have identically oriented micromirrors. With the micromirrors can in the subject and / or
  • Fresnel structures (cf., EP 1562758 B1) can be used or combined with micromirrors.
  • micromirrors relief heights of a maximum of 100 ⁇ m to a maximum of 1 ⁇ m are known and lateral dimensions of less than 100 ⁇ m to less than 10 ⁇ m are known.
  • a different relief structure can be used for the background area and the motif area. It is crucial that the contour line area dampens or eliminates the effect of the first and second coating. He achieves this especially good as so-called moth eye structure (see WO 2006/026975 A2 and EP 2453269 AI).
  • the contour area can be provided with a structuring by structuring the relief structure in a correspondingly structured manner.
  • the structuring may mean an interruption of the contour area and / or micro-text or information that is invisible to the naked eye.
  • the outline area may also be a contour line within a complex subject.
  • a complex motif consists of several motif components, whereby one of the motif components in the optical perception is to be understood as a background, so that the contour area delimits the background area, ie a motive area of the complex motif, against another motif area of the complex motif.
  • 1 is a plan view of a banknote with a security element
  • FIG. 2 is a plan view of the security element with multiple motifs against a background, with outlines delineate the motifs against the background, 3 shows an enlarged view of the security element in a region in which a motif is delimited against the background by two contour lines, and FIG. 4 shows a sectional view through the security element in the region of a region shown in FIG.
  • FIG. 1 shows a top view of a banknote B which has a security element S for protection against counterfeiting.
  • the security element is in the schematic representation of Fig. 1 is a rectangular patch, which is designed in the embodiment as a film element and adhered to a banknote paper of banknote B.
  • the security element could likewise be used in a security thread or a window area of the banknote B.
  • Fig. 2 shows the security element S, which represents a purely exemplary example as a motive a hummingbird with a year in front of a background.
  • a motif area 1 and a background area 2 are formed by different coatings, which form an optical contrast in reflection, so that the subject can be perceived with the unaided eye.
  • the hummingbird and the year are each delineated by an outline from the background.
  • the contour lines are generated in contour regions 3 by a relief structure which is designed such that it forms a contrast both to the motif area 1 and to the background area 2. For a viewer, this significantly increases the perceptibility of the motifs.
  • the relief structure in the outline is provided with embossed structures which show a contrast with respect to the areas 1 and 2 after coating and preferably become dark.
  • the appearance of the outline is largely independent of whether it is provided with the coating of the motif area 1 or the coating of the background area 2.
  • the contour line region 3 is advantageously the same or almost the same dark. Due to register fluctuations, the contour line region is usually provided partly with the first and partly with the second coating. However, if its appearance with both metallizations is similarly dark (for example, with a deviation of the degree of absorption of less than 0.2, preferably less than 0.1), this is hardly noticed or not at all.
  • the contrast between the contour area 3 and the areas 1 and 2 dominates the contrast between the different coatings within the outline.
  • the contour regions 3 have a double function. On the one hand, they support the structuring of the motif by delimiting the motif from the background or different subject areas. On the other hand, they record register fluctuations in the application of the coatings, since the relief structure also occupied with one of the two coatings still causes a contrast between adjacent areas.
  • FIG. 3 shows a section of the security element of FIG. 2, namely a point in which the motif area 1 is bounded on both sides by the background area 2.
  • Contour line areas 3 are located at the boundaries.
  • the contour line areas 3 have a width which is selected such that it absorbs register fluctuations when the first coating is applied to the motif area 1 or the second coating is applied to the background area 3.
  • the width of each contour region 3 is greater than the maximum register variations during the application of the coatings.
  • Fig. 4 shows these relationships in a sectional view in the section 4, which is symbolized by a dashed circle in Fig. 3.
  • the security element S is constructed on a substrate 5, on the upper side of which an embossing lacquer layer 6 is formed.
  • the motif region 1 is characterized by a first coating 7 and the background region 2 by a second coating 8, which influence or define the reflection impression of the motif region 1 and the background region 2.
  • a transparent cover film 9 provides a protected upper side of the security element S.
  • the contour line region 3 is formed by embossing a moth-eye structure 10 in the embossing lacquer layer 6 under the coatings 7, 8, which overlaps with the first and / or second coating 7 and / or second coating 7 8, the contour area is made light-absorbing.
  • the two coatings 7, 8 abut each other at a boundary line 11. This lies above the moth-eye structure 10.
  • the optical impression, ie the boundary of the motif area 1 or of the background area 2 is defined by the contour line area 3 and thus by the moth-eye structure 10.
  • Their width is chosen so that register fluctuation in the position of the boundary line 11 between the first coating 7 and second coating 8 are collected. The width of the moth-eye structure 10 is therefore greater than register fluctuations that occur when the first and second
  • first coating 7 would be, for example, a reddish or gold-colored coating (eg Au, Cu or Al-Cu alloy) or a color-shift coating, as known from the prior art as a multilayer structure.
  • second coating 8 of the background region 2 would be aluminum metallization.
  • the coatings 7, 8 can be structured by means of a so-called wash-dye printing process, which is known in the prior art.
  • the width of the contour line region 3 is selected such that the edges of the coatings or their boundary line 11 always lie within the contour line region 2 within the scope of the register variations.
  • the outline line area should be at least 0.4 mm wide.
  • the respective second coating is then applied adjacent or with sufficient overlap to the first, so that the two different coatings abut one another above the boundary line or overlap, preferably at least still touching in all register situations.
  • the observer sees two differently colored areas perfectly matched to one another, namely subject area 1 and background area 2, between which an outline of exactly 0.4 mm extends.
  • Outline is not set to an outer boundary of a creative, it can also be an internal contour that delimits different areas of a creative against each other so that one creative area is considered a background area and the other is a creative area.
  • the moth-eye structures 10 used in FIGS. 1 to 4 are particularly suitable.
  • Various possibilities are known from the literature to produce such moth-eye structures 10.
  • These publications describe random surfaces which form a refractive index gradient layer and have a good absorption effect.
  • the structure depth is preferably more than 50 nm and the mean distance between adjacent elevations is less than 500 nm. They are therefore an example of sub-wavelength structures.
  • Such random surfaces can be off
  • Plastic substrates such as PMMA are produced with a plasma etching.
  • periodically arranged moth-eye structures can also be used. Even microcavities that have a mean distance greater than 500 nm, can show a high absorption effect.
  • EP 1434695 B1 discloses a moth-eye structure which is formed by a metallised cross-grating with a period of less than 420 nm. It is also possible to use a two-dimensional periodic sub-wavelength grating for light absorption, as described, for example, in WO 2012/156049 A1.
  • the delineation between the background area, the motif area and the outline area can be achieved by means of relief structures acting as color filters. These do not necessarily have to be black, but may also appear in a different color, e.g. Red or blue. Dark colors are advantageous for recognizing the subject.
  • the said metallic subwavelength structures show an increased light absorption in the visible spectral range, partly due to a resonant absorption of light, which leads to a sparklingness of the reflection.
  • a high contrast between the contour line area and the motif area or background area is ensured since, for relief structures, the mean absorption in the visible wavelength range is always higher than that of smooth surfaces, as described e.g. are provided in the subject and background areas. Alternatively, these structures may not be dark from some directions.
  • the average brightness of the contour line area is advantageously less than 50% of the average brightness of the motif area and of the background area in reflection.
  • the relief structure of the contour line region 3 is preferably produced using lithographic methods, for example an e-beam system or a laser writing system which operates, for example, with a two-photon absorption process. Alternatively, it can be used in a two-step lithographic process. be generated. In a first step, a nanostructuring is carried out. This is done, for example, by an electron beam lithographic process. Alternatively, laser beam interference methods come into question. Aperiodic moth-eye structures can also be generated by plasma etching or by structuring with ultrashort laser pulses. In a subsequent step, such an original or a copy thereof is leveled with photolack. Particularly suitable for this purpose are spin-coating or dip-coating processes.
  • the relief structure is written in a photolithographic step in the photoresist and the desired areas of the structures are free-scanned.
  • This process can be done with the help of a laserwriter using the direct exposure method.
  • the resulting original can then be copied by electroplating or using photopolymers (eg Ormocere).
  • the surface structure of a stamp produced in this way can now be multiplied by a step-and-repeat method on a larger area next to each other. By galvanic impression of this replicated on the surface of the original of an embossing cylinder can be made.
  • the structure can be embossed on a film in a continuous roll-to-roll process.
  • nanoimprint processes such as hot stamping or embossing in UV-curable materials come into question.
  • the embossed film is provided with the two coatings.
  • common vapor deposition methods come into question, such as electron beam vapor deposition, thermal evaporation or sputtering.
  • the metallic material used may be metals such as aluminum, silver, copper, palladium, gold, chromium, nickel, iron, cobalt and / or tungsten and their alloys.
  • the structure is optionally laminated and protected with the cover sheet 9.
  • the relief structure can also be covered with a multi-layer coating. be gene.
  • color-shift coatings come into question, which consist of a semi-transparent metal layer, a dielectric spacer layer and an underlying metallic mirror layer. Suitable dielectrics are, in particular, SiO 2 , MgF 2 , Ta 2 C> 5, ZnS and polymers.
  • Another alternative is a dielectric coating with a high refractive index material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un élément de sécurité servant à fabriquer des documents de valeur tels que des billets de banque, des chèques ou similaire, qui laisse apparaître un motif devant un arrière-plan. L'élément de sécurité (S) comporte une zone à motif (1) qui est pourvue d'un premier revêtement (7) et qui fournit le motif, et une zone d'arrière-plan (2) qui est pourvue d'un deuxième revêtement (8) différent du premier revêtement (7) et qui fournit l'arrière-plan. Une zone de lignes de contour (3) est prévue dans l'élément de sécurité, elle délimite la zone à motif (1) par rapport à la zone d'arrière-plan (2). La zone de lignes de contour (3) est formée par une structure en relief (10) qui présente une géométrie d'absorption de lumière si bien qu'un contraste de luminosité et/ou de couleur entre la zone de lignes de contour (3) d'une part et la zone à motif (1) et la zone d'arrière-plan (2) d'autre part est de mise. La structure en relief (10) de la zone de lignes de contour (3) est recouverte au moins en partie par le premier revêtement (7) et/ou le deuxième revêtement (8) et absorbe ainsi des fluctuations de registre du premier et/ou deuxième revêtement (7, 8). -
EP18717829.8A 2017-04-04 2018-04-03 Elément de sécurité et son procédé de fabrication Active EP3606766B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017003274.2A DE102017003274A1 (de) 2017-04-04 2017-04-04 Sicherheitselement und Herstellungsverfahren hierfür
PCT/EP2018/000149 WO2018184721A1 (fr) 2017-04-04 2018-04-03 Élément de sécurité et procédé de fabrication associé

Publications (2)

Publication Number Publication Date
EP3606766A1 true EP3606766A1 (fr) 2020-02-12
EP3606766B1 EP3606766B1 (fr) 2021-06-09

Family

ID=61972476

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18717829.8A Active EP3606766B1 (fr) 2017-04-04 2018-04-03 Elément de sécurité et son procédé de fabrication

Country Status (5)

Country Link
EP (1) EP3606766B1 (fr)
JP (1) JP7204075B2 (fr)
CN (1) CN110461618B (fr)
DE (1) DE102017003274A1 (fr)
WO (1) WO2018184721A1 (fr)

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Also Published As

Publication number Publication date
EP3606766B1 (fr) 2021-06-09
JP2020519478A (ja) 2020-07-02
JP7204075B2 (ja) 2023-01-16
CN110461618A (zh) 2019-11-15
DE102017003274A1 (de) 2018-10-04
CN110461618B (zh) 2021-03-23
WO2018184721A1 (fr) 2018-10-11

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