EP2753754A2 - Procédé de fabrication d'un papier de sécurité et fil à microlentilles - Google Patents

Procédé de fabrication d'un papier de sécurité et fil à microlentilles

Info

Publication number
EP2753754A2
EP2753754A2 EP12769595.5A EP12769595A EP2753754A2 EP 2753754 A2 EP2753754 A2 EP 2753754A2 EP 12769595 A EP12769595 A EP 12769595A EP 2753754 A2 EP2753754 A2 EP 2753754A2
Authority
EP
European Patent Office
Prior art keywords
microlens
paper web
web
thread
areas
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
EP12769595.5A
Other languages
German (de)
English (en)
Other versions
EP2753754B2 (fr
EP2753754B1 (fr
Inventor
Rudolf Seidler
Manfred Heim
Bernhard Wiedner
Michael Rahm
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 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47002812&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2753754(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2753754A2 publication Critical patent/EP2753754A2/fr
Application granted granted Critical
Publication of EP2753754B1 publication Critical patent/EP2753754B1/fr
Publication of EP2753754B2 publication Critical patent/EP2753754B2/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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • 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
    • D21H21/42—Ribbons or strips
    • 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
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • B42D2033/22—
    • B42D2033/24—
    • B42D2035/20—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/346—Perforations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core

Definitions

  • the invention relates to a method for producing a security paper, as well as a microlens threads for introduction into a paper web with such a method.
  • Security documents such as banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other forgery-prone papers, such as passports or other identity documents, are often provided with security elements for the purpose of security, which allow the authenticity of the value document to be checked which also serve as protection against unauthorized reproduction.
  • the security elements can be designed, for example, in the form of a security thread completely or partially embedded in a banknote.
  • microlens security threads have become established on the banknote market. These microlens filaments differ significantly from metallized filaments and offer attractive optical properties.
  • the microlens threads are equipped with microlenses whose focusing effect is produced by refraction of light on an approximately spherically curved surface.
  • microstructures In the focal plane of the microlenses are microstructures that are arranged so that the interaction of the microlenses and the microstructures for the viewer can represent an enlarged image with special motion effects.
  • the lens side of the thread is not provided with adhesive prior to embedding in a paper web, as with conventional security threads, such as hologram threads. which is the case.
  • conventional security threads such as hologram threads.
  • the present invention seeks to avoid the disadvantages of the prior art and in particular to provide a method for producing a security paper, which allows a secure embedding of a microlens thread in the paper and at the same time in the window areas in which the microlens thread on the Surface of the paper, ensuring an attractive visual appearance of the microlens thread.
  • an endless microlens thread is provided, which has an upper side and an opposite lower side, wherein the upper side is provided with microlenses at least in partial areas,
  • a paper web having a predetermined web pattern is produced, which has land regions in which the microlens thread is embedded in the interior of the paper web, and which has window regions lying between the web regions, in which the microlens thread protrudes on the surface of the paper web, and E) of the Mikrolinsenf Aden introduced into the paper web and is connected on its underside and in the web areas also on its upper side with the paper web, wherein the paper web forms the safety paper with the introduced Mikrolinsenfaden.
  • the microlens thread is provided on its upper side with an adhesive layer in the form of the web pattern prior to introduction into the paper web and the microlens thread registered in step E) is introduced into the paper web so that the regions coated with adhesive of the microlens thread coincide with the web portions of the paper web.
  • a registered introduction of the microlens thread can be carried out in particular according to one of the methods described in the publication WO 2004/050991 Al.
  • the disclosure of this document is included in the present application in this respect.
  • the microlens thread may include a motif with a motif jump.
  • a motif with a motif jump As described in more detail in the publication WO 2008/145333 A2, in the production of a microlens thread initially an endless security element film is produced as a roll material, which always occur when using conventional manufacturing methods break points, especially gaps or a misalignment in the appearance of the security elements. These fractures are due to the fact that the precursors for the embossing tools used in the production in general are produced as flat plates, which are mounted on a printing or embossing cylinder. At the seams, the mutually adjacent image patterns usually do not match and lead after printing or embossing in the appearance of the finishedforce- elements to a jump of the kind mentioned.
  • a microlens thread, a motif with a Motive jump contains, registered introduced into the paper web, so that the motif jump comes to rest in one of the web areas of the paper web. The subject jump then remains hidden from the viewer.
  • subject jumps occur several times within an embossing cylinder.
  • the patterns are composed by recombination of small segments, stitches with motif jumps result.
  • motive jumps occur due to the process both in the grid of the microstructures and in the grid of the microlenses.
  • the microlens thread is printed directly before entering the paper web targeted in the areas of its upper side with an adhesive layer, which come to lie in the sheet formation below land areas of the paper web.
  • the microlens thread is provided with a plurality of openings in an opening region in the form of the web pattern before being introduced into the paper web, and the microlens filament in step E) is registered in the paper web, so that the apertured regions of the microlens filament coincide with the web regions of the paper web.
  • the microlens thread can contain a motif with a motif jump and the microlens thread can be registered, so that the motif jump comes to rest in one of the web areas of the paper web and is therefore hidden from the viewer.
  • the microlens thread is provided in the areas of its upper side with openings, which come to rest below the land areas of the paper web during sheet formation, immediately before entering the paper web.
  • the openings are advantageously produced by punching or laser cutting. If the openings are produced in the paper web only immediately before the shrinkage of the microlens thread, they are preferably produced by laser cutting.
  • the paper web is expediently formed with the predetermined web pattern in a paper machine and the endless microlens thread runs into the paper machine.
  • a microlens thread is provided whose upper side has partial areas with microlenses and microlens-free partial areas, the microlens-free partial areas being smaller than the width of the bridge areas of the Web pattern are in the paper web, and wherein the microlens-free portions are coated prior to introduction into the paper web with adhesive.
  • the microlens thread is introduced into the paper web in an unregistered manner so that microlenses are at least partially visible in each window region and always a portion of the adhesive-coated subregions come to rest beneath web regions of the paper web.
  • a microlens thread is provided which on the one hand has partial regions with microlenses, which partial regions are coated with adhesive before being introduced into the paper web and which are smaller than the width of the web regions of the web pattern in the paper web on the other hand, have partial areas with microlenses which are not coated with adhesive before being introduced into the paper web.
  • the microlens thread is introduced in particular unregistered in the paper web, so that in each window area at least partially microlenses that have no adhesive coating, can be seen and always come to lie part of the adhesive-coated portions below web portions of the paper web.
  • the microlens thread is advantageously provided over its entire surface with an adhesive layer before being introduced into the paper web on its underside.
  • the invention also includes a microlens thread for insertion into a paper web, in particular with the method just described.
  • the microlens thread includes a top and an opposite bottom, the upper side having partial areas with microlenses and microlens-free partial areas which are coated with adhesive.
  • microlens sections and the microlens-free sections advantageously form alternating strips on the upper side of the thread, each of which completely occupies the width of the microlens thread and in each case has an extension of between 1 mm and 30 mm, preferably between 3 mm and 12, in the longitudinal direction of the microlens thread mm have.
  • the microlens sections and the microlens-free sections may usually be in the form of rectangles. However, it would also be possible for the partial areas with microlenses and the microlens-free partial areas to be present in the form of diagonals. It can be made especially for wider threads diagonal paper webs.
  • the underside of the microlens thread is preferably coated over the entire surface with adhesive.
  • FIG. 1 is a schematic representation of a banknote according to the invention with an embedded microlens thread
  • 2 shows a plan view of the microlens thread of FIG. 2, a plan view of another microlens thread before embedding in a security paper
  • FIG 5 shows a cross-section of the microlens thread of FIG. 5, a cross section of a security paper with an embedded microlens thread according to FIGS. 5 and 6, a cross section of the microlens thread according to the invention; and a cross section of a security paper with an embedded microlens thread according to FIG. 8.
  • FIG. 1 shows a schematic representation of a bank note 10 produced according to the invention with a micro-optical window security thread 12, which is also referred to below as a microlens thread.
  • the microlens thread 12 emerges in window areas 14 on the surface of the banknote 10, while it is embedded in the interposed web areas 16 in the interior of the banknote 10.
  • the microlens thread 12 illustrated in FIGS. 2 and 4 is used for the production of a security paper.
  • FIG. 3 shows a cross-section of the security paper 50 with the microlens thread 12 already embedded.
  • FIG. 2 shows a schematic of the layer structure of the microlens thread 12 prior to embedding in the security paper, wherein only the parts of the layer structure required for explaining the functional principle are shown.
  • FIG. 4 shows a plan view of the microlens thread 12 of FIG. 2.
  • the microlens thread 12 contains a carrier 20 in the form of a transparent plastic film, for example a PET film about 20 .mu.m thick.
  • the upper side 30 of the microlens thread 12 has a grid-like arrangement of microlenses 22 which form a grid with a preselected symmetry on the surface of the carrier foil.
  • the spherically or aspherically ausgestaltet microlenses 22 preferably have a diameter between 5 ⁇ and 50 ⁇ and in particular a diameter between only 10 ⁇ and 35 ⁇ and are therefore not visible to the naked eye. It is understood that in other designs also larger or smaller Dimensions come into question. The use of cylindrical lenses is possible in the same way.
  • a motif layer 26 is arranged, which contains a likewise grid-shaped arrangement of micromotiv elements 28.
  • the arrangement of the micromotif elements 28 also forms a lattice with a preselected symmetry, wherein the tuning of the lattice of the microlenses 22 and the arrangement of the micromotif elements 28 produces a desired magnification effect, characteristic movement effects and / or tilting effects.
  • the micromotif elements are invisible to the naked eye. Reference is additionally made at this point to WO 2009/000528 A1, in which it is stated that the microstructures can also consist of image fragments which are not arranged repetitively.
  • the microlens thread 12 typically includes other layers 24, such as protective, masking or other functional layers, which are not essential to the present invention and therefore will not be described further.
  • the motif perceived by the viewer usually has a motif jump, as described in more detail, for example, in document WO 2008/145333 A2.
  • a paper web 50 is now produced on the round screen of a paper machine with a predetermined web pattern 18 (FIG.
  • the web pattern 18 has land areas 16 in which the microlens thread 12 is embedded later in the interior of the finished paper web 50. Between the web portions 16 are window areas 14 in which the microlens thread 12 emerges on the surface of the finished paper web 50.
  • the microlens fiber 12 is provided on its upper side 30 with an adhesive layer 40 in the form of the web pattern 18 before being introduced into the paper web 50, so that the adhesive layer 40 forms an adhesive pattern 48 whose Sequence of uncoated areas 44 and coated areas 46 of the sequence of window areas 14 and web portions 16 of the web pattern 18 corresponds.
  • the underside 32 of the microlens thread 12 is provided with a full-surface adhesive layer 42.
  • This microlens thread 12 thus coated with adhesive 40, 42 is then registered in the paper web 50, so that the adhesive-coated regions 46 of the microlens thread coincide with the web regions 16 of the paper web 50, as shown in FIG.
  • the microlens thread 12 can be introduced by means of a coil under pretension in the paper web.
  • a first sensor detects the position of the coated regions 46 shortly before being introduced into the paper web
  • a second sensor detects the position of the webs 16 formed in the paper web immediately after sheet formation.
  • the positions detected by the two sensors are evaluated and used to control the magnitude of the bias voltage.
  • the bias voltage is increased, the microlens thread 12 is stretched more, and when the preload is lowered, the elongation is reduced.
  • the microlens thread 12 can be aligned in this manner with its coated and uncoated areas 44, 46 in register on the window and web areas 14, 16.
  • the method is such that the thread carries a register mark, which is recognized particularly well by a detection system.
  • the thread embedding is then controlled by means of the tension on the thread so that the register mark of the thread is in fixed local reference to the register mark of the paper, usually a watermark.
  • the areas in which the thread has adhesive on the top are then in a fixed, known local reference to the register mark of the thread.
  • the land areas in the paper are in fixed local relation to the register mark in the paper.
  • the uncoated regions 44 and the coated regions 46 have, in advantageous embodiments, the same size as the window regions 14 or the land regions 16. In some embodiments, it is also provided that the coated regions 46 are smaller, for example by not more than 10% or not more than 50% smaller than the land areas 16.
  • the glue-coated part compared to the paper webs thread length is also very much related to the register tolerance of registered thread embedding. For example, if the registration allowance is ⁇ 1 mm registered thread insertion, the glue-free areas of the thread should be 2 mm shorter than the paper webs. Even if only a part of the microlens thread 12 is glued to the web areas 16, a significantly improved embedding results compared with the prior art.
  • the uncoated regions 44 are slightly smaller than the window regions 14 come into consideration.
  • the focusing effect of adhesive-loaded microlenses 22 in the window regions 14 is reduced or eliminated, so that the uncoated regions 44 are preferably smaller by no more than 10%, particularly preferably not more than 5%, than the window regions 14.
  • Another advantage the registered introduction of the microlens thread 12 is that any potential jumps 34 in the motif image can be hidden under a paper web 16 of the security paper 50, as shown in Fig. 3. Thereby, the uniformity of the visual appearance of the microlens thread 12 is further increased.
  • the microlens filament 12 is introduced into the paper web 50 in a registered manner, but is printed with an adhesive pattern 48 just before entering the papermachine so that the coated regions 46 penetrate into the recessed portions of the round screen. in which the paper webs 16 form, come to rest.
  • a sensor can detect the position of the webs 16 formed during sheet formation in the paper web, and the detected position can be used to control the printing positions for the adhesive pattern 48. In this way too, the uncoated teten and coated areas 44, 46 register exactly on the window and web areas 14, 16 are aligned.
  • FIGS. 5 to 7 show a plan view and a cross section of the microlens thread 60 prior to embedding in the security paper
  • FIG. 7 shows a cross section of the security paper 50 with the embedded microlens thread 60.
  • the microlens thread 60 becomes on its upper side 30 is not coated with adhesive, but it is provided prior to introduction into the paper web 50 with an opening pattern 68 in the form of the web pattern 18.
  • the opening pattern 68 consists of a sequence of regions 66 with openings 62 and regions 64 without openings, which corresponds to the sequence of the land regions 16 and window regions 14 of the web pattern 18.
  • the underside 32 of the microlens thread 60 is preferably provided with a full-surface adhesive layer 42.
  • the microlens thread 60 is registered in the paper web 50, so that the apertured areas 66 of the microlens thread 60 coincide with the web areas 16 of the paper web 50, as already described in principle in connection with FIGS. 2 to 4.
  • the first sensor in this case detects the position of the openings 62 just before the introduction of the microlens thread 12 into the paper web. In this way, the microlens thread 60 can be aligned in register with the window and web regions 14, 16 with its opening pattern 68.
  • the openings 62 that in the formation of paper under the web portions 16 paper fibers or other constituents of the substrate 50 may penetrate through the openings 62 to establish communication between the land areas 16 and the substrate material 52 under the microlens filament 60 (FIG. 7). This also results in an intimate connection of paper web 50 and microlens thread 60 and thus secure embedding without wrinkling being achieved. Since the top 30 of the microlens thread 60 remains adhesive-free, the optical properties of the microlenses 22 are not compromised.
  • the openings 62 may for example be punched or produced by laser cutting.
  • Each region 66 may include one or more apertures 62.
  • FIGS. 6 and 7 show a design with only one opening 62 per area 66
  • FIG. 5 illustrates a design with three openings 62 per area 66.
  • the microlens thread 60 is not registered registered in the paper web 50, but it is only immediately before entering the paper machine by laser exposure so provided with the opening pattern 68 that the areas 66 with openings 62 in the recessed portions of Rundsiebs, in which the paper webs 16 form, come to rest.
  • a sensor can detect the position of the webs 16 formed in the paper web and the detected position can be used to control the laser beam. Also in this way, the opening pattern 68 register exactly on the window and web portions 14, 16 are aligned.
  • a microlens thread 70 is used which has on its upper side 30 a sequence of partial regions 74 with microlenses 22 and microlens-free partial regions 76.
  • the motif layer and any further layers th of the microlens thread 70 are not shown in FIGS. 8 and 9 for the sake of clarity.
  • the microlens-free portions 76 of the top 30 are coated with adhesive 40 and the underside of the microlens thread 70 is coated over its entire surface with adhesive 42.
  • the adhesive-coated, microlens-free subregions 76 are smaller than the width of the window regions 14 of the web pattern 18. This ensures that microlenses 22 can be seen at least in certain regions during the unregistered introduction of the microlens thread 70 into a security paper 50 in each window region 14 (FIG. 9).
  • the areas coated with adhesive may well also have microlenses. Although these would be optically ineffective due to the adhesive coating, they permit a uniform configuration of the thread with microlenses.
  • the microlens-free regions diagonally or in strips along the thread and thus optionally to provide areas over the entire length of the thread which coat with adhesive can be.
  • the adhesive or adhesive used in the present invention may be, for example, a heat sealing lacquer.
  • the adhesive may moreover have security features, for example dyes or color pigments and luminescent substances.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un papier de sécurité, selon lequel M) on prend un fil à microlentilles (12) continu, qui présente une face supérieure (30) et une face inférieure (32) opposée, la face supérieure (30) étant pourvue de microlentilles (22) au moins dans des zones partielles, P) on produit une bande de papier (50) qui est pourvue d'un motif de segments (18) prédéfini présentant des zones de segments (16) dans lesquelles le fil à microlentilles (12) est noyé dans la bande de papier (50), et des zones fenêtres (14) qui sont situées entre les zones de segments (16) et dans lesquelles le fil à microlentilles (12) est visible à la surface de la bande de papier (50), et E) le fil à microlentilles (12) est incorporé dans la bande de papier (50) en étant relié à ladite bande de papier (50) par sa face inférieure (32) et même par sa face supérieure (30) dans les zones de segments (16), la bande de papier (50) formant conjointement avec le fil à microlentilles (12) incorporé le papier de sécurité.
EP12769595.5A 2011-09-06 2012-09-04 Procédé de fabrication d'un papier de sécurité et fil à microlentilles Active EP2753754B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011112554A DE102011112554A1 (de) 2011-09-06 2011-09-06 Verfahren zur Herstellung eines Sicherheitspapiers und Mikrolinsenfaden
PCT/EP2012/003695 WO2013034279A2 (fr) 2011-09-06 2012-09-04 Procédé de fabrication d'un papier de sécurité et fil à microlentilles

Publications (3)

Publication Number Publication Date
EP2753754A2 true EP2753754A2 (fr) 2014-07-16
EP2753754B1 EP2753754B1 (fr) 2015-11-18
EP2753754B2 EP2753754B2 (fr) 2023-05-24

Family

ID=47002812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12769595.5A Active EP2753754B2 (fr) 2011-09-06 2012-09-04 Procédé de fabrication d'un papier de sécurité et fil à microlentilles

Country Status (4)

Country Link
US (1) US20140238628A1 (fr)
EP (1) EP2753754B2 (fr)
DE (1) DE102011112554A1 (fr)
WO (1) WO2013034279A2 (fr)

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DE102011115133A1 (de) * 2011-10-07 2013-04-11 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zum Herstellen eines blattförmigen Substrates
KR20210029157A (ko) * 2018-07-03 2021-03-15 크레인 앤 코, 인크 증가된 하비스팅 저항성을 보여주는 보안 장치가 부착된 보안 문서
CN111761962B (zh) * 2018-07-20 2021-07-23 安徽原上草节能环保科技有限公司 安全元件
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US20140238628A1 (en) 2014-08-28
WO2013034279A3 (fr) 2013-07-18
WO2013034279A2 (fr) 2013-03-14
EP2753754B2 (fr) 2023-05-24
DE102011112554A1 (de) 2013-03-07
EP2753754B1 (fr) 2015-11-18

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