EP1899527B1 - Multi-ply security paper and method for the production thereof - Google Patents

Multi-ply security paper and method for the production thereof Download PDF

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Publication number
EP1899527B1
EP1899527B1 EP06723411.2A EP06723411A EP1899527B1 EP 1899527 B1 EP1899527 B1 EP 1899527B1 EP 06723411 A EP06723411 A EP 06723411A EP 1899527 B1 EP1899527 B1 EP 1899527B1
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EP
European Patent Office
Prior art keywords
paper
security
ply
security element
endless
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.)
Not-in-force
Application number
EP06723411.2A
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German (de)
French (fr)
Other versions
EP1899527A2 (en
Inventor
Friedrich Kretschmar
Mario Keller
Ralf Liebler
Jürgen Ruck
Wolfgang Wensauer
Theodor Burchard
Thomas Bodendieck
Gregor Grauvogl
Horst Reigl
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Giesecke and Devrient GmbH
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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.)
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Publication date
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Priority to PL08019593T priority Critical patent/PL2031126T3/en
Priority to EP08019594.4A priority patent/EP2031127B1/en
Priority to EP08019593.6A priority patent/EP2031126B1/en
Publication of EP1899527A2 publication Critical patent/EP1899527A2/en
Application granted granted Critical
Publication of EP1899527B1 publication Critical patent/EP1899527B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/44—Watermarking devices
    • 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
    • D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
    • D21F11/08—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
    • 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

Definitions

  • the invention relates to multilayer security paper for the production of security or value documents, such as banknotes or identity cards.
  • Security papers or documents of value are often provided with security features, such as watermarks, embedded security threads and the like, which make it possible to check the authenticity of the security paper or value document and at the same time serve as protection against unauthorized reproduction.
  • security paper here refers to the unprinted paper, which is usually in quasi-endless form and is further processed at a later time.
  • a "document of value” is a document that has been completed for its intended use.
  • Value documents within the meaning of the present invention are, in particular, bank notes, shares, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identity documents, as well as product security elements such as labels, seals, packaging and the like.
  • the simplified term “security paper” or "value document” below includes all such documents and product security means.
  • the outer paper layer also contains watermarks in the form of letters or images. Adjacent to the watermarks, a security thread is inserted between the two paper layers.
  • the EP 0 860 298 A2 discloses a multilayer security paper according to the preamble of claim 1.
  • authenticity features have proven themselves that can only be introduced into the security paper during production.
  • a first type of authenticity features such as watermarks, security threads, chemically-reactive additives or mottled fibers, serve for visual authentication by a human. Although these features are visually recognizable, they guarantee a high degree of safety, since the paper equipped with such authenticity features can only be produced with complex machines to which a counterfeiter has no access and whose purchase or replica is not economically worthwhile for counterfeiting purposes.
  • security papers have for a long time also been provided with authenticity features of a second type, which can only be detected by means of special detection devices.
  • a forger additionally has the problem of having to identify the presence of a feature and its special properties.
  • a security thread for embedding in banknotes or other value documents may have a visually recognizable negative light in transmitted light and additionally a machine-readable magnetic code.
  • the present invention seeks to propose a security paper of the type mentioned, which has a high security against counterfeiting.
  • Multi-ply security paper is a security paper combined from several layers, whereby the merging of the layers can take place already with the papermaking or only after the papermaking.
  • the security paper can be equipped with one or more authenticity features.
  • Foreign elements can be applied to the security paper, visually or machine-controllable measures can be taken on the individual layers that make up the multilayer security paper, and intercalations between two or more of the individual layers can be introduced.
  • the multilayer security paper contains at least one layer of paper.
  • the further layers can likewise be made of paper, but also of other materials, for example by plastic films.
  • the foreign elements can be applied, for example, glued, both during and after paper production in endless form, such as strips or tapes, or in the form of label-shaped individual elements on the security paper.
  • individual elements such as fibers, planchettes, pigments, imprints and the like, or continuous materials such as security threads, security tapes, nets, meshes, fabric material or film webs are contemplated.
  • the individual layers may have a total or even only partially different thickness or different composition. The latter can be achieved for example by additives in the production of individual layers or by forming the individual layers of different fibers.
  • the individual layers can have a different surface structure. These include, for example, authenticity features, such as through openings, watermarks or interruptions, in one or more of the individual layers. Subsequent deformation of the paper layers, for example with the aid of a dandy cutter, is also possible.
  • authenticity features can be produced on the one hand with the measures just mentioned, ie in particular by varying the thickness, the composition or the surface structure of the paper layers. Additional possibilities arise when different materials, such as paper and plastic films, are combined. One, several, or even all of the different material layers can then be provided with authenticity features, wherein a particularly high protection against counterfeiting is achieved when the authenticity features of different layers enter into a functional correlation with each other.
  • the information present in different layers may supplement one another with overall information, or the effect of an authenticity feature of one layer may presuppose the presence of a further feature in another layer.
  • a generic security paper in an initial paper layer an endless security element is introduced, which is freely accessible on at least one side of the paper layer.
  • the first paper layer is covered on the freely accessible side of the security element by a second paper layer, which has one or more openings in the region of the security element.
  • the first paper layer contains a watermark and the second paper layer in the area of the watermark contains an interruption in which the watermark clearly emerges.
  • the extent of the opening (s) perpendicular to the running direction of the endless security element is smaller than its width so that it does not extend beyond the security element.
  • the endless security element can be formed in particular by a security thread or a wide security band.
  • Security threads have a width of 2 mm or less, usually about 1 mm.
  • Wider endless security elements are referred to as security bands in the context of this description. In particular, they have a width of 4 mm to 20 mm, sometimes even up to 30 mm.
  • the wide security tapes typically divide the first paper layer into two parts so that they are visible and accessible on both sides of the paper layer.
  • a characteristic deckle edge is advantageously formed in the edge regions of the security band, which is not reproduce by cutting or punching.
  • the security element may also be fastened with an adhesive in the first paper layer.
  • the endless security element can moreover be equipped with optically variable effects, in particular with a diffraction structure, a hologram, a color shift effect or another interference layer effect. It can also be provided with a printed image, in particular positive or negative characters.
  • the opening of the second paper layer may, for example, be provided in the form of a strip-shaped interruption extending along the endless security element. Such an interruption can be closed during production with a rupturable release strip, so that an initially closed security paper is formed into which an opening can be made at a later time. Any other hole shapes are eligible for the openings, such as a regular sequence of round or square interruptions.
  • the openings in the second paper layer with a transparent material, in particular a polyurethane adhesive filled.
  • the first paper layer has a grammage of 60 to 80 g / m 2 , in particular of 65 to 70 g / m 2
  • the second paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2
  • the conditions are reversed, and the first paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2
  • the second paper layer has a grammage of 60 to 80 g / m 2, in particular of 65 to 70 g / m 2.
  • the production of the first and / or second paper web is preferably carried out in a DC round wire paper machine.
  • the first and / or second paper web can be produced in a short former in which the paper pulp is sprayed onto a round screen.
  • the second paper web is produced on a round screen, the holes of which are closed in partial areas.
  • the sheet formation is suppressed in these sub-areas and there are fiber-free areas, so openings, in the second paper web.
  • the closing of the holes can be done with advantage by applying, in particular sticking a cover strip, by partial printing of the screen with a lacquer layer or by a voltage applied from the inside of the lateral surface of the round cover ring. It is also possible to run the endless security element in the papermaking on the round screen so that it closes the holes of the round screen at the accumulated places.
  • Fig.1 shows a schematic representation of a Doppelrundsieb-paper machine 10, as it is used in the manufacture of security paper.
  • the paper machine 10 includes two rotary screen paper machines 12 and 14, which communicate with each other via a pick-up felt 16.
  • a paper web 20 is formed on a round screen 18, in which a security element, here a wide liquid-impermeable security tape 22, is embedded.
  • the security belt 22 runs on bumps 26 of the round screen 18 before it dips into the paper pulp 24 of the paper machine.
  • the security band 22 may, for example, have a width of 20 mm or even 30 mm. Due to its large width, no sheet formation takes place in the areas in which the liquid-impermeable security tape 22 rests on the protuberances 26 of the first paper wire 18, so that the security tape 22 divides the first paper web 20 into two parts. At the edges of the security band 22 forms a characteristic deckle edge.
  • a second, homogeneous paper web 30 is produced in parallel thereto, removed from the round wire 34 by means of the pick-up felt 16 and guided to the first paper machine 12, where it is connected to the first paper web 20 in the region of the pressure roller 36.
  • the first paper web 20 with the enclosed security tape 22 is covered over its entire area by the homogeneous second paper web 30.
  • the interconnected paper webs 38 are then fed to other processing stations, such as calenders, sizing and the like.
  • the second paper web 30 may, as in Fig. 2 also be produced with a Kurzformer 40, in which the paper pulp is sprayed onto the surface of a round screen 44 with a headbox 42.
  • a Kurzformer 40 in which the paper pulp is sprayed onto the surface of a round screen 44 with a headbox 42.
  • a multi-ply security paper 50 like one of the paper machines of the Figures 1 or 2 can be made is in Fig. 3 shown in cross section.
  • the security paper 50 includes a first paper ply 52 that is shared by a wide security tape 54 and a thinner second paper ply 56 that covers one side of the first paper ply 52.
  • the first paper layer 52 is provided with a watermark and the security tape 54 has a hologram or a hologram-like diffraction structure.
  • the thin second paper layer 56 serves as a reinforcement in the region of the security band 54.
  • the second paper layer covers the first paper layer.
  • an interruption 58 is introduced into the second paper layer 56, whose width or diameter 60 is smaller than the width 62 of the security band 54.
  • the interruption 58 may be formed, for example, in the form of a strip-shaped opening with a width of 60, but also in the form of individual openings of any shape.
  • the dimension 60 then corresponds to the extent of the openings perpendicular to the running direction of the safety belt 54.
  • the interruption 58 as a linear hole pattern shows Fig. 4 (a) the security paper in cross section and the FIGS. 4 (b) and 4 (c) Supervision on the front and back of the security paper.
  • the further embodiment of the Fig. 5 shows a security paper 64, in which, in contrast to the embodiment of Fig. 4 not a wide security band, but a narrow security thread 66 is embedded with a width of 1.5 mm or less. With such security threads, the back sheet formation in the first paper machine 12 is not suppressed, so that the security thread 66 does not divide the first paper layer 52, but is embedded in it and freely accessible only from one side.
  • the first paper layer 52 contains a watermark 68, as in FIG Fig. 6 shown, and the second paper layer 56 is interrupted in the region of the watermark 68, to increase the visibility of the watermark.
  • the first paper ply 52 may include additional apertures or other authenticity marks.
  • a wide security band in the security paper of the Fig. 6 be introduced.
  • the pores of the round screen of the second sheet forming unit for example the Rundsiebs 44 of Kurzformers 40, closed in some areas.
  • This can, as in Figs. 7 (a) and (b) shown by a glued to the jacket of the round screen 44 net strip 70 with covered in the form of the desired openings areas 72 done.
  • the cover strip 70 may also be formed completely impermeable to produce a strip-shaped interruption.
  • the holes of the Siebober configuration can be closed at the desired locations with a Lackaufdruck.
  • a screen-applied lacquer layer can easily be washed out again after the job has been completed and the screen can be provided with a new lacquer layer for the next application.
  • a running on the Siebachse 46 cover ring 74 is provided with closed and perforated portions in the interior of the round screen 44, which presses radially outward against the screen jacket and thus prevents sheet formation in the closed portions.
  • interruptions 58 are generated in the second paper layer 56, which have a non-adjustable by punching or cutting deckle edge.
  • the security thread or the security tape runs on the second sheet forming unit, for example the short former 40.
  • the round screen of the second sheet forming unit can be taped in the area of the security thread or safety bands or the incoming security element can cover the round screen itself accordingly.
  • the thicker first paper web can be formed in this variant with or without a through opening in the area of the security element.
  • FIG Fig. 9 An embodiment of a security paper 80 produced according to this production variant is shown in FIG Fig. 9 shown.
  • the first and second paper layers 82 and 84 are shown for illustration only with different hatchings, they appear on the finished security paper 80 as a uniform paper layer in appearance.
  • the security element 86 arranged in the gap of the second paper layer 84 is visible from both sides of the security paper through the interruption 88 in the first paper layer 82 and may, for example, have optically variable elements on both sides. If necessary, the security element 86 may be secured with an adhesive in the gap of the second paper ply.
  • the strip-like interruption or the other generated openings of any shape can be filled with polyurethane after drying the security paper.
  • FIG. 10 A modification of the multilayer security paper of Fig. 9 , in which the interruption can be exposed at any time after manufacture, is in Fig. 10 shown.
  • a security element 86 separating this paper layer and a strip-shaped interruption 88 in the first paper layer 82 are produced.
  • a release strip 90 was additionally introduced in papermaking, on the back of which a thin paper layer 92 has formed. The release strip 90 may be peeled off the finished security paper together with the paper deposit 92 like a tearing thread and leaves a subsequently inserted opening in the first paper layer 82 which releases the view of the security element 86.
  • a relatively thick paper layer formed on a DC round screen, into which watermarks, apertures or security element may be incorporated, may be combined with two or more thinner paper layers formed on further forming units, in particular the short formers described above.
  • These paper layers can be produced with separate sheet forming units or even produced by separate headboxes on the same Kurzformer.

Description

Die Erfindung betrifft mehrlagiges Sicherheitspapier für die Herstellung von Sicherheits- oder Wertdokumenten, wie Banknoten oder Ausweiskarten.The invention relates to multilayer security paper for the production of security or value documents, such as banknotes or identity cards.

Sicherheitspapiere oder Wertdokumente werden zur Absicherung oft mit Echtheitsmerkmalen, wie Wasserzeichen, eingebetteten Sicherheitsfäden und dergleichen, ausgestattet, die eine Überprüfung der Echtheit des Sicherheitspapiers oder Wertdokuments gestatten und die zugleich als Schutz vor unerlaubter Reproduktion dienen.Security papers or documents of value are often provided with security features, such as watermarks, embedded security threads and the like, which make it possible to check the authenticity of the security paper or value document and at the same time serve as protection against unauthorized reproduction.

Im Sinne der Erfindung bezeichnet dabei der Begriff "Sicherheitspapier" das unbedruckte Papier, das üblicherweise in quasi endloser Form vorliegt und zu einem späteren Zeitpunkt weiterverarbeitet wird. Als "Wertdokument" wird ein Dokument bezeichnet, das für seinen bestimmungsgemäßen Gebrauch fertig gestellt ist. Wertdokumente im Sinne der vorliegenden Erfindung sind insbesondere Banknoten, Aktien, Anleihen, Urkunden, Gutscheine, Schecks, hochwertige Eintrittskarten, aber auch andere fälschungsgefährdete Papiere, wie Pässe und sonstige Ausweisdokumente, sowie Produktsicherungselemente, wie Etiketten, Siegel, Verpackungen und dergleichen. Die vereinfachte Benennung "Sicherheitspapier" oder "Wertdokument" schließt im Folgenden alle derartigen Dokumente und Produktsicherungsmittel ein.For the purposes of the invention, the term "security paper" here refers to the unprinted paper, which is usually in quasi-endless form and is further processed at a later time. A "document of value" is a document that has been completed for its intended use. Value documents within the meaning of the present invention are, in particular, bank notes, shares, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identity documents, as well as product security elements such as labels, seals, packaging and the like. The simplified term "security paper" or "value document" below includes all such documents and product security means.

Ein Beispiel für ein fälschungssicheres Papier mit zwei Papierschichten ist in der EP 0 825 297 A1 gegeben. Diese Druckschrift zeigt ein Sicherheitspapier mit zwei Papierlagen, nämlich einer äußeren Papierlage und einer weiteren Papierlage, wobei die äußere Papierlage entlang der longitudinalen Papierlaufrichtung intermittierend angeordnete Fensterbereiche aufweist.An example of a tamper-proof paper with two paper layers is in the EP 0 825 297 A1 given. This document shows a security paper with two paper layers, namely an outer paper layer and a further paper layer, the outer paper layer having intermittently arranged window regions along the longitudinal paper direction.

Die äußere Papierlage enthält dabei neben den Fensterbereichen auch Wasserzeichen in Form von Buchstaben oder Bildern. Angrenzend an die Wasserzeichen ist ein Sicherheitsfaden zwischen die beiden Papierlagen eingefügt.In addition to the window areas, the outer paper layer also contains watermarks in the form of letters or images. Adjacent to the watermarks, a security thread is inserted between the two paper layers.

Die EP 0 860 298 A2 offenbart ein mehrlagiges Sicherheitspapier gemäß dem Oberbegriff des Anspruchs 1.The EP 0 860 298 A2 discloses a multilayer security paper according to the preamble of claim 1.

In der Vergangenheit haben sich insbesondere solche Echtheitsmerkmale bewährt, die nur während der Herstellung in das Sicherheitspapier eingebracht werden können. Eine erste Art von Echtheitsmerkmalen, wie etwa Wasserzeichen, Sicherheitsfäden, chemisch reagierende Zusätze oder Melierfasern, dient der visuellen Echtheitsprüfung durch einen Menschen. Obwohl diese Merkmale visuell erkennbar sind, garantieren sie eine hohe Sicherheit, da das mit solchen Echtheitsmerkmalen ausgestattete Papier nur mit aufwändigen Maschinen hergestellt werden kann, zu denen ein Fälscher keinen Zugang hat und deren Anschaffung oder Nachbau sich für Fälschungszwecke wirtschaftlich nicht lohnt.In the past, in particular, such authenticity features have proven themselves that can only be introduced into the security paper during production. A first type of authenticity features, such as watermarks, security threads, chemically-reactive additives or mottled fibers, serve for visual authentication by a human. Although these features are visually recognizable, they guarantee a high degree of safety, since the paper equipped with such authenticity features can only be produced with complex machines to which a counterfeiter has no access and whose purchase or replica is not economically worthwhile for counterfeiting purposes.

Neben den visuell und ohne Hilfsmittel identifizierbaren Merkmalen werden Sicherheitspapiere seit langem auch mit Echtheitsmerkmalen einer zweiten Art ausgestattet, welche nur mithilfe spezieller Nachweisvorrichtungen nachweisbar sind. Bei dieser Art von Merkmalen hat ein Fälscher zusätzlich das Problem, das Vorliegen eines Merkmals und dessen besondere Eigenschaften erst identifizieren zu müssen.In addition to features that can be identified visually and without aids, security papers have for a long time also been provided with authenticity features of a second type, which can only be detected by means of special detection devices. With this type of features, a forger additionally has the problem of having to identify the presence of a feature and its special properties.

Viele Sicherheitspapiere und Wertdokumente enthalten Echtheitsmerkmale beider genannter Arten, um eine Echtheitsprüfung auf verschiedenen Ebenen zu ermöglichen. Beispielsweise kann ein Sicherheitsfaden für eine Einbettung in Banknoten oder andere Wertdokumente eine im Durchlicht visuell erkennbare Negativschrift und zusätzlich einen nur maschinell lesbaren Magnetcode aufweisen.Many security papers and documents of value contain authenticity features of both types mentioned in order to enable an authenticity check at various levels. For example, a security thread for embedding in banknotes or other value documents may have a visually recognizable negative light in transmitted light and additionally a machine-readable magnetic code.

Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, ein Sicherheitspapier der eingangs genannten Art vorzuschlagen, das eine hohe Fälschungssicherheit aufweist.Based on this, the present invention seeks to propose a security paper of the type mentioned, which has a high security against counterfeiting.

Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Weiterbildungen sind Gegenstand der Unteransprüche.This object is solved by the features of the independent claims. Further developments are the subject of the dependent claims.

Mehrlagiges Sicherheitspapier ist ein aus mehreren Schichten kombiniertes Sicherheitspapier, wobei die Zusammenführung der Schichten bereits bei der Papierherstellung oder erst nach der Papierherstellung erfolgen kann. In beiden Varianten gibt es mehrere verschiedene Prinzipien, nach denen das Sicherheitspapier mit einem oder mehreren Echtheitsmerkmalen ausgestattet werden kann. Auf das Sicherheitspapier können Fremdelemente aufgebracht werden, es können visuell oder maschinell prüfbare Maßnahmen an den einzelnen, das mehrlagige Sicherheitspapier aufbauenden Schichten vorgenommen werden, und es können Einlagerungen zwischen zwei oder mehreren der Einzelschichten eingebracht werden.Multi-ply security paper is a security paper combined from several layers, whereby the merging of the layers can take place already with the papermaking or only after the papermaking. In both Variants there are several different principles according to which the security paper can be equipped with one or more authenticity features. Foreign elements can be applied to the security paper, visually or machine-controllable measures can be taken on the individual layers that make up the multilayer security paper, and intercalations between two or more of the individual layers can be introduced.

Das mehrlagige Sicherheitspapier enthält zumindest eine Lage aus Papier. Die weiteren Lagen können ebenfalls aus Papier, aber auch aus anderen Materialien, beispielsweise durch Kunststofffolien, gebildet sein.The multilayer security paper contains at least one layer of paper. The further layers can likewise be made of paper, but also of other materials, for example by plastic films.

Die Fremdelemente können sowohl bei als auch nach der Papierherstellung in endloser Form, etwa als Streifen oder Bänder, oder in Form von etikettenförmigen Einzelelementen auf das Sicherheitspapier aufgebracht, beispielsweise aufgeklebt werden. Für die Einlagerungen zwischen den Schichten kommen Einzelelemente, wie Fasern, Planchetten, Pigmente, Aufdrucke und dergleichen, oder Endlosmaterial, wie etwa Sicherheitsfäden, Sicherheitsbänder, Netze, Gitter, Gewebematerial oder Folienbahnen, in Betracht.The foreign elements can be applied, for example, glued, both during and after paper production in endless form, such as strips or tapes, or in the form of label-shaped individual elements on the security paper. For interlayer intercalations, individual elements such as fibers, planchettes, pigments, imprints and the like, or continuous materials such as security threads, security tapes, nets, meshes, fabric material or film webs are contemplated.

Bei der Papierherstellung bietet sich eine Vielzahl von an den einzelnen Papierschichten vorzunehmenden Maßnahmen an. Beispielsweise können die Einzelschichten insgesamt oder auch nur bereichsweise unterschiedliche Dicke oder unterschiedliche Zusammensetzung aufweisen. Letzteres kann beispielsweise durch Zusätze bei der Herstellung der Einzelschichten oder durch Ausbildung der Einzelschichten aus unterschiedlichen Fasern erreicht werden. Weiter können die Einzelschichten eine unterschiedliche Flächenstruktur aufweisen. Darunter fallen beispielsweise Echtheitsmerkmale, wie durchgehende Öffnungen, Wasserzeichen oder Unterbrechungen, in einer oder mehreren der Einzelschichten. Auch eine nachträgliche Verformung der Papierlagen, etwa mithilfe eines Egoutteurs, kommt in Betracht.In papermaking, a variety of measures to be taken on the individual layers of paper offer. For example, the individual layers may have a total or even only partially different thickness or different composition. The latter can be achieved for example by additives in the production of individual layers or by forming the individual layers of different fibers. Furthermore, the individual layers can have a different surface structure. These include, for example, authenticity features, such as through openings, watermarks or interruptions, in one or more of the individual layers. Subsequent deformation of the paper layers, for example with the aid of a dandy cutter, is also possible.

Werden die Papierlagen erst nach der Papierherstellung etwa durch Kaschieren miteinander verbunden, so können Echtheitsmerkmale zum einen mit den eben erwähnten Maßnahmen, also insbesondere durch Variation der Dicke, der Zusammensetzung oder der Flächenstruktur der Papierlagen erzeugt werden. Zusätzliche Möglichkeiten ergeben sich, wenn unterschiedliche Materialien, wie Papier und Kunststofffolien, miteinander kombiniert werden. Eine, mehrere, oder sogar alle der unterschiedlichen Materialschichten können dann mit Echtheitsmerkmalen versehen werden, wobei ein besonders hoher Fälschungsschutz erreicht wird, wenn die Echtheitsmerkmale aus verschiedenen Schichten miteinander eine funktionelle Wechselbeziehung eingehen. Beispielsweise können sich die in verschiedenen Schichten vorliegenden Informationen zu einer Gesamtinformation ergänzen, oder die Wirkung eines Echtheitsmerkmals einer Schicht kann das Vorhandensein eines weiteren Merkmals in einer anderen Schicht voraussetzen.If the paper layers are joined to one another by laminating only after papermaking, then authenticity features can be produced on the one hand with the measures just mentioned, ie in particular by varying the thickness, the composition or the surface structure of the paper layers. Additional possibilities arise when different materials, such as paper and plastic films, are combined. One, several, or even all of the different material layers can then be provided with authenticity features, wherein a particularly high protection against counterfeiting is achieved when the authenticity features of different layers enter into a functional correlation with each other. For example, the information present in different layers may supplement one another with overall information, or the effect of an authenticity feature of one layer may presuppose the presence of a further feature in another layer.

In der Erfindung ist bei einem gattungsgemäßen Sicherheitspapier in eine erste Papierlage ein endloses Sicherheitselement eingebracht, welches auf zumindest einer Seite der Papierlage frei zugänglich ist. Die erste Papierlage ist auf der frei zugänglichen Seite des Sicherheitselements von einer zweiten Papierlage abgedeckt, welche im Bereich des Sicherheitselements eine oder mehrere Öffnungen aufweist. Bei dem Sicherheitspapier enthält die erste Papierlage ein Wasserzeichen und die zweite Papierlage im Bereich des Wasserzeichens eine Unterbrechung, in der das Wasserzeichen deutlich hervortritt. Vorzugweise ist die Ausdehnung der Öffnung(en) senkrecht zur Laufrichtung des endlosen Sicherheitselements kleiner als dessen Breite, so dass sie nicht über das Sicherheitselement hinausreicht.In the invention, in a generic security paper in an initial paper layer an endless security element is introduced, which is freely accessible on at least one side of the paper layer. The first paper layer is covered on the freely accessible side of the security element by a second paper layer, which has one or more openings in the region of the security element. In the case of the security paper, the first paper layer contains a watermark and the second paper layer in the area of the watermark contains an interruption in which the watermark clearly emerges. Preferably, the extent of the opening (s) perpendicular to the running direction of the endless security element is smaller than its width so that it does not extend beyond the security element.

Das endlose Sicherheitselement kann insbesondere durch einen Sicherheitsfaden oder ein breites Sicherheitsband gebildet sein. Sicherheitsfäden weisen dabei eine Breite von 2 mm oder weniger, zumeist von etwa 1 mm auf. Breitere endlose Sicherheitselemente werden im Rahmen dieser Beschreibung als Sicherheitsbänder bezeichnet. Sie weisen insbesondere eine Breite von 4 mm bis 20 mm, teilweise sogar bis zu 30 mm auf.The endless security element can be formed in particular by a security thread or a wide security band. Security threads have a width of 2 mm or less, usually about 1 mm. Wider endless security elements are referred to as security bands in the context of this description. In particular, they have a width of 4 mm to 20 mm, sometimes even up to 30 mm.

Während die schmäleren Sicherheitsfäden meist in die erste Papierlage eingebettet sind, teilen die breiten Sicherheitsbänder typischerweise die erste Papierlage in zwei Teile, so dass sie auf beiden Seiten der Papierlage sichtbar und zugänglich sind. Dabei wird in den Randbereichen des Sicherheitsbands mit Vorteil ein charakteristischer Büttenrand ausgebildet, der durch Schneiden oder Stanzen nicht nachzubilden ist. Das Sicherheitselement kann auch mit einem Kleber in der ersten Papierlage befestigt sein.While the narrower security threads are mostly embedded in the first paper layer, the wide security tapes typically divide the first paper layer into two parts so that they are visible and accessible on both sides of the paper layer. In this case, a characteristic deckle edge is advantageously formed in the edge regions of the security band, which is not reproduce by cutting or punching. The security element may also be fastened with an adhesive in the first paper layer.

Das endlose Sicherheitselement kann darüber hinaus mit optisch variablen Effekten, insbesondere mit einer Beugungsstruktur, einem Hologramm, einem Farbkippeffekt oder einem anderen Interferenzschichteffekt, ausgestattet sein. Es kann auch mit einem Druckbild, insbesondere Positiv- oder Negativschriftzeichen, versehen sein.The endless security element can moreover be equipped with optically variable effects, in particular with a diffraction structure, a hologram, a color shift effect or another interference layer effect. It can also be provided with a printed image, in particular positive or negative characters.

Die Öffnung der zweiten Papierlage kann beispielsweise in Gestalt einer sich entlang des endlosen Sicherheitselements erstreckenden streifenförmigen Unterbrechung vorgesehen sein. Eine solche Unterbrechung kann bei der Herstellung mit einem aufreißbaren Releasestreifen verschlossen werden, so dass ein zunächst geschlossenes Sicherheitspapier entsteht, in das zu einem späteren Zeitpunkt eine Öffnung eingebracht werden kann. Auch beliebige andere Lochformen kommen für die Öffnungen infrage, wie etwa eine regelmäßige Abfolge runder oder eckiger Unterbrechungen. In einer vorteilhaften Ausgestaltung sind die Öffnungen in der zweiten Papierlage mit einem transparenten Material, insbesondere einem Polyurethankleber, gefüllt.The opening of the second paper layer may, for example, be provided in the form of a strip-shaped interruption extending along the endless security element. Such an interruption can be closed during production with a rupturable release strip, so that an initially closed security paper is formed into which an opening can be made at a later time. Any other hole shapes are eligible for the openings, such as a regular sequence of round or square interruptions. In an advantageous Embodiment, the openings in the second paper layer with a transparent material, in particular a polyurethane adhesive filled.

Die erste Papierlage weist in einer vorteilhaften Erfindungsvariante eine Grammatur von 60 bis 80 g/m2, insbesondere von 65 bis 70 g/m2 auf, während die zweite Papierlage eine Grammatur von 15 bis 45 g/m2, insbesondere von 20 bis 25 g/m2 aufweist. In einer anderen, ebenfalls vorteilhaften Variante sind die Verhältnisse umgekehrt, und die erste Papierlage weist eine Grammatur von 15 bis 45 g/m2, insbesondere von 20 bis 25 g/ m2 auf, während die zweite Papierlage eine Grammatur von 60 bis 80 g/m2, insbesondere von 65 bis 70 g/m2 aufweist.In an advantageous variant of the invention, the first paper layer has a grammage of 60 to 80 g / m 2 , in particular of 65 to 70 g / m 2 , while the second paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2 . In another, likewise advantageous variant, the conditions are reversed, and the first paper layer has a grammage of 15 to 45 g / m 2 , in particular from 20 to 25 g / m 2 , while the second paper layer has a grammage of 60 to 80 g / m 2, in particular of 65 to 70 g / m 2.

Bei einem Verfahren zur Herstellung eines oben geschilderten Sicherheitspapiers ist vorgesehen, dass

  • eine erste Papierbahn gebildet wird, und ein endloses Sicherheitselement so in die erste Papierbahn eingebracht wird, dass das endlose Sicherheitselement zumindest auf einer Seite der Papierbahn frei zugänglich ist,
  • in die erste Papierbahn ein Wasserzeichen eingebracht wird,
  • eine zweite Papierbahn gebildet wird, die im noch feuchten Zustand
  • eine zweite Papierbahn gebildet wird, die im noch feuchten Zustand mit der ersten Papierbahn zusammengeführt und fest verbunden wird, so dass sie die frei zugängliche Seite des Sicherheitselements abdeckt,
  • wobei in die zweite Papierbahn eine oder mehrere Öffnungen eingebracht werden, die nach dem Zusammenführen mit der ersten Papierbahn im Bereich des endlosen Sicherheitselements zu liegen kommen,
  • und wobei in die zweite Papierbahn weiter eine Unterbrechung eingebracht wird, die nach dem Zusammenführen mit der ersten Papierbahn im Bereich des Wasserzeichens zu liegen kommt.
In a method for producing a security paper described above, it is provided that
  • a first paper web is formed, and an endless security element is introduced into the first paper web such that the endless security element is freely accessible at least on one side of the paper web,
  • a watermark is inserted in the first paper web,
  • a second paper web is formed, which is still wet
  • a second paper web is formed, which is brought together in the still wet state with the first paper web and firmly connected so that it covers the freely accessible side of the security element,
  • wherein in the second paper web one or more openings are introduced, which come to rest after the merging with the first paper web in the region of the endless security element,
  • and wherein an interruption is further introduced in the second paper web, which comes to lie in the region of the watermark after merging with the first paper web.

Die Herstellung der ersten und/oder zweiten Papierbahn erfolgt bevorzugt in einer Gleichstromrundsieb-Papiermaschine. Alternativ oder zusätzlich kann die erste und/oder zweite Papierbahn in einem Kurzformer erzeugt werden, bei dem die Papiermasse auf ein Rundsieb aufgedüst wird.The production of the first and / or second paper web is preferably carried out in a DC round wire paper machine. Alternatively or additionally, the first and / or second paper web can be produced in a short former in which the paper pulp is sprayed onto a round screen.

In einer besonders vorteilhaften Weiterbildung des Verfahrens wird die zweite Papierbahn auf einem Rundsieb erzeugt, dessen Löcher in Teilbereichen verschlossen sind. Dadurch wird die Blattbildung in diesen Teilbereichen unterdrückt und es entstehen faserfreie Bereiche, also Öffnungen, in der zweiten Papierbahn. Das Verschließen der Löcher kann mit Vorteil durch Aufbringen, insbesondere Aufkleben eines Abdeckstreifens, durch partielles Bedrucken des Siebs mit einer Lackschicht oder durch einen von innen an der Mantelfläche des Rundsiebs anliegenden Abdeckring erfolgen. Es ist auch möglich, das endlose Sicherheitselement bei der Papierherstellung so auf das Rundsieb auflaufen zu lassen, dass es an den aufgelaufenen Stellen die Löcher des Rundsiebs verschließt.In a particularly advantageous development of the method, the second paper web is produced on a round screen, the holes of which are closed in partial areas. As a result, the sheet formation is suppressed in these sub-areas and there are fiber-free areas, so openings, in the second paper web. The closing of the holes can be done with advantage by applying, in particular sticking a cover strip, by partial printing of the screen with a lacquer layer or by a voltage applied from the inside of the lateral surface of the round cover ring. It is also possible to run the endless security element in the papermaking on the round screen so that it closes the holes of the round screen at the accumulated places.

Einige besonders vorteilhafte Ausführungsbeispiele erfindungsgemäßer mehrlagiger Sicherheitspapiere werden nachfolgend anhand der Figuren erläutert, bei deren Darstellung auf eine maßstabs- und proportionsgetreue Wiedergabe verzichtet wurde, um die Anschaulichkeit zu erhöhen.Some particularly advantageous embodiments of multilayer security papers according to the invention are explained below with reference to the figures, in the representation of which a representation true to scale and proportion has been dispensed with in order to increase the clarity.

Es zeigen:

Fig.1
eine schematische Darstellung einer Doppelrundsieb-Papiermaschine zur Herstellung eines Sicherheitspapiers,
Fig. 2
eine Papiermaschine mit einer Rundsieb-Papiermaschine und einem Kurzformer in schematischer Darstellung,
Fig. 3
den Schichtaufbau eines Sicherheitspapiers im Querschnitt,
Fig. 4
in (a) den Schichtaufbau eines Sicherheitspapiers im Querschnitt und in (b) und (c) eine Aufsicht auf die Vorder- bzw. Rückseite des Sicherheitspapiers,
Fig. 5 und 6
den Schichtaufbau weiterer Sicherheitspapiere im Querschnitt,
Fig. 7
in (a) ein Rundsieb eines Kurzformers mit aufgeklebtem Abdeckstreifen sowie in (b) einen Abschnitt des Abdeckstreifens selbst,
Fig. 8
ein Rundsieb wie in Fig. 7(a) mit einem im Inneren laufenden Abdeckring,
Fig. 9 und 10
den Schichtaufbau weiterer Sicherheitspapiere im Querschnitt.
Show it:
Fig.1
a schematic representation of a Doppelrundsieb paper machine for producing a security paper,
Fig. 2
a paper machine with a rotary screen paper machine and a short shaper in a schematic representation,
Fig. 3
the layer structure of a security paper in cross-section,
Fig. 4
in (a) the layer structure of a security paper in cross-section and in (b) and (c) a plan view of the front and / or back of the security paper,
FIGS. 5 and 6
the layer structure of further security papers in cross-section,
Fig. 7
in (a) a round sieve of a short shaper with glued-on cover strip and in (b) a section of the cover strip itself,
Fig. 8
a round screen like in Fig. 7 (a) with a cover ring running inside,
FIGS. 9 and 10
the layer structure of further security papers in cross section.

Die Beispiele nach den Figuren 1-5 und 7-10 sind keine Ansführungsformen der beanspruchten Erfindung, sondern dienen dazu, das Verständnis der Erfindung zu erleichtern.The examples after the Figures 1-5 and 7-10 are not embodiments of the claimed invention, but serve to facilitate the understanding of the invention.

Fig.1 zeigt in schematischer Darstellung eine Doppelrundsieb-Papiermaschine 10, wie sie bei der Herstellung von Sicherheitspapier eingesetzt wird. Die Papiermaschine 10 enthält zwei Rundsieb-Papiermaschinen 12 und 14, die über einen Abnahmefilz 16 miteinander in Verbindung stehen. Fig.1 shows a schematic representation of a Doppelrundsieb-paper machine 10, as it is used in the manufacture of security paper. The paper machine 10 includes two rotary screen paper machines 12 and 14, which communicate with each other via a pick-up felt 16.

In der ersten Papiermaschine 12 wird auf einem Rundsieb 18 eine Papierbahn 20 gebildet, in die ein Sicherheitselement, hier ein breites flüssigkeitsundurchlässiges Sicherheitsband 22, eingebettet wird. Dazu läuft das Sicherheitsband 22 vor dem Eintauchen in die Papiermasse 24 der Papiermaschine auf Höcker 26 des Rundsiebs 18 auf. Das Sicherheitsband 22 kann beispielsweise eine Breite von 20 mm oder sogar 30 mm aufweisen. Aufgrund seiner großen Breite findet in den Bereichen, in denen das flüssigkeitsundurchlässige Sicherheitsband 22 auf den Höckern 26 des ersten Papiersiebs 18 aufliegt, keine Blattbildung statt, so dass das Sicherheitsband 22 die erste Papierbahn 20 in zwei Teile teilt. An den Rändern des Sicherheitsbands 22 bildet sich dabei ein charakteristischer Büttenrand. Zur besseren Verankerung des Sicherheitsbands 22 können in seinen Randbereichen flüssigkeits- oder sogar faserdurchlässige Bereiche vorgesehen werden.
In der zweiten Papiermaschine 14 wird parallel dazu eine zweite, homogene Papierbahn 30 hergestellt, mittels des Abnahmefilzes 16 vom Rundsieb 34 abgenommen und zur ersten Papiermaschine 12 geführt, wo sie im Bereich der Andruckrolle 36 mit der ersten Papierbahn 20 verbunden wird. Die erste Papierbahn 20 mit dem eingeschlossenen Sicherheitsband 22 wird dabei von der homogenen zweiten Papierbahn 30 vollflächig abgedeckt. Die miteinander verbundenen Papierbahnen 38 werden dann weiteren Bearbeitungsstationen, wie Kalander, Leimung und dergleichen, zugeführt.In the first paper machine 12, a paper web 20 is formed on a round screen 18, in which a security element, here a wide liquid-impermeable security tape 22, is embedded. For this purpose, the security belt 22 runs on bumps 26 of the round screen 18 before it dips into the paper pulp 24 of the paper machine. The security band 22 may, for example, have a width of 20 mm or even 30 mm. Due to its large width, no sheet formation takes place in the areas in which the liquid-impermeable security tape 22 rests on the protuberances 26 of the first paper wire 18, so that the security tape 22 divides the first paper web 20 into two parts. At the edges of the security band 22 forms a characteristic deckle edge. For better anchoring of the safety band 22 liquid or even fiber-permeable areas can be provided in its edge regions.
In the second paper machine 14, a second, homogeneous paper web 30 is produced in parallel thereto, removed from the round wire 34 by means of the pick-up felt 16 and guided to the first paper machine 12, where it is connected to the first paper web 20 in the region of the pressure roller 36. The first paper web 20 with the enclosed security tape 22 is covered over its entire area by the homogeneous second paper web 30. The interconnected paper webs 38 are then fed to other processing stations, such as calenders, sizing and the like.

Die zweite Papierbahn 30 kann, wie in Fig. 2 dargestellt, auch mit einem Kurzformer 40 erzeugt werden, bei dem die Papiermasse mit einer Stoffauflaufdüse 42 auf die Oberfläche eines Rundsiebs 44 aufgedüst wird. Mit einem solchen Kurzformer lassen sich besonders dünne Papierlagen, beispielsweise mit einer Grammatur von 15 bis 25 g/m2, erzeugen.The second paper web 30 may, as in Fig. 2 also be produced with a Kurzformer 40, in which the paper pulp is sprayed onto the surface of a round screen 44 with a headbox 42. With such a short shaper, it is possible to produce particularly thin paper layers, for example with a grammage of 15 to 25 g / m 2 .

Es versteht sich, dass mit den gezeigten Papiermaschinen 12, 14, 40 in analoger Weise auch drei oder mehr Papierbahnen erzeugt und zusammengeführt werden können.It is understood that three or more paper webs can be produced and combined in an analogous manner with the paper machines 12, 14, 40 shown.

Ein mehrlagiges Sicherheitspapier 50, wie es mit einer der Papiermaschinen der Figuren 1 oder 2 hergestellt werden kann, ist in Fig. 3 im Querschnitt gezeigt. Das Sicherheitspapier 50 enthält eine erste Papierlage 52, die von einem breiten Sicherheitsband 54 geteilt wird, sowie eine dünnere zweite Papierlage 56, die eine Seite der ersten Papierlage 52 abdeckt. In einer vorteilhaften Variante ist die erste Papierlage 52 mit einem Wasserzeichen versehen und das Sicherheitsband 54 weist ein Hologramm oder eine hologrammähnliche Beugungsstruktur auf. Die dünne zweite Papierlage 56 dient hierbei als Verstärkung im Bereich des Sicherheitsbandes 54. Alternativ hierzu können in der ersten Papierlage Löcher längs des in das Papier eingebetteten Sicherheitsfadens vorliegen, die breiter sind als das Sicherheitsband. Die zweite Papierlage deckt die erste Papierlage ab.A multi-ply security paper 50, like one of the paper machines of the Figures 1 or 2 can be made is in Fig. 3 shown in cross section. The security paper 50 includes a first paper ply 52 that is shared by a wide security tape 54 and a thinner second paper ply 56 that covers one side of the first paper ply 52. In an advantageous variant, the first paper layer 52 is provided with a watermark and the security tape 54 has a hologram or a hologram-like diffraction structure. The thin second paper layer 56 serves as a reinforcement in the region of the security band 54. Alternatively, in the first paper layer, there may be holes along the security thread embedded in the paper, which are wider than the security band. The second paper layer covers the first paper layer.

Zur Herstellung des mehrlagigen Sicherheitspapiers in Fig. 3 kann auch so vorgegangen werden, dass erst Papierlage 52 mit einer streifenförmigen Aussparung und die Papierlage 56 hergestellt und zusammengeführt werden und dann das Sicherheitsband 54 in die streifenförmige Aussparung eingelegt wird.For the production of the multilayer security paper in Fig. 3 It is also possible to proceed in such a way that only paper layer 52 having a strip-shaped recess and paper layer 56 are produced and brought together, and then security tape 54 is inserted into the strip-shaped recess.

In dem Ausführungsbeispiel der Fig. 4 ist in die zweite Papierlage 56 eine Unterbrechung 58 eingebracht, deren Breite oder Durchmesser 60 kleiner als die Breite 62 des Sicherheitsbandes 54 ist. Die Unterbrechung 58 kann beispielsweise in Form einer streifenförmigen Öffnung mit Breite 60, aber auch in Gestalt einzelner Öffnungen beliebiger Form ausgebildet sein. Die Abmessung 60 entspricht dann der Ausdehnung der Öffnungen senkrecht zur Laufrichtung des Sicherheitsbands 54. Für eine Ausgestaltung der Unterbrechung 58 als lineares Lochraster zeigt Fig. 4(a) das Sicherheitspapier im Querschnitt und die Figuren 4(b) und 4(c) Aufsichten auf die Vorder- bzw. Rückseite des Sicherheitspapiers.In the embodiment of Fig. 4 an interruption 58 is introduced into the second paper layer 56, whose width or diameter 60 is smaller than the width 62 of the security band 54. The interruption 58 may be formed, for example, in the form of a strip-shaped opening with a width of 60, but also in the form of individual openings of any shape. The dimension 60 then corresponds to the extent of the openings perpendicular to the running direction of the safety belt 54. For an embodiment of the interruption 58 as a linear hole pattern shows Fig. 4 (a) the security paper in cross section and the FIGS. 4 (b) and 4 (c) Supervision on the front and back of the security paper.

Das weitere Ausführungsbeispiel der Fig. 5 zeigt ein Sicherheitspapier 64, bei dem im Unterschied zu dem Ausführungsbeispiel der Fig. 4 nicht ein breites Sicherheitsband, sondern ein schmaler Sicherheitsfaden 66 mit einer Breite von 1,5 mm oder weniger eingebettet ist. Bei derartigen Sicherheitsfäden wird die rückseitige Blattbildung in der ersten Papiermaschine 12 nicht unterdrückt, so dass der Sicherheitsfaden 66 die erste Papierlage 52 nicht teilt, sondern in sie eingebettet und nur von einer Seite her frei zugänglich ist.The further embodiment of the Fig. 5 shows a security paper 64, in which, in contrast to the embodiment of Fig. 4 not a wide security band, but a narrow security thread 66 is embedded with a width of 1.5 mm or less. With such security threads, the back sheet formation in the first paper machine 12 is not suppressed, so that the security thread 66 does not divide the first paper layer 52, but is embedded in it and freely accessible only from one side.

In beiden Ausführungsvarianten enthält erfindungsgemäß die erste Papierlage 52 ein Wasserzeichen 68, wie in Fig. 6 gezeigt, und die zweite Papierlage 56 ist im Bereich des Wasserzeichens 68 unterbrochen, um die Sichtbarkeit des Wasserzeichens zu erhöhen. Die erste Papierlage 52 kann zusätzliche Öffnungen oder andere Echtheitskennzeichen enthalten. Anstelle des Sicherheitsfadens kann selbstverständlich auch ein breites Sicherheitsband in dem Sicherheitspapier der Fig. 6 eingebracht sein.In both embodiments, according to the invention, the first paper layer 52 contains a watermark 68, as in FIG Fig. 6 shown, and the second paper layer 56 is interrupted in the region of the watermark 68, to increase the visibility of the watermark. The first paper ply 52 may include additional apertures or other authenticity marks. Of course, instead of the security thread, a wide security band in the security paper of the Fig. 6 be introduced.

Um die Unterbrechung 58 in der zweiten Papierlage 56 zu erzeugen, werden die Poren des Rundsiebs der zweiten Blattbildungseinheit, beispielsweise des Rundsiebs 44 des Kurzformers 40, in Teilbereichen verschlossen. Dies kann, wie in Fig. 7(a) und (b) gezeigt, durch einen auf den Mantel des Rundsiebs 44 aufgeklebten Netzstreifen 70 mit in Form der gewünschten Öffnungen abgedeckten Bereichen 72 erfolgen. Der Abdeckstreifen 70 kann zur Erzeugung einer streifenförmigen Unterbrechung auch vollständig undurchlässig ausgebildet sein.In order to create the interruption 58 in the second paper layer 56, the pores of the round screen of the second sheet forming unit, for example the Rundsiebs 44 of Kurzformers 40, closed in some areas. This can, as in Figs. 7 (a) and (b) shown by a glued to the jacket of the round screen 44 net strip 70 with covered in the form of the desired openings areas 72 done. The cover strip 70 may also be formed completely impermeable to produce a strip-shaped interruption.

Alternativ können die Löcher der Sieboberfläche an den gewünschten Stellen auch mit einem Lackaufdruck verschlossen werden. Eine im Siebdruck aufgebrachte Lackschicht kann nach Auftragsbeendigung problemlos wieder ausgewaschen werden und das Sieb für den nächsten Auftrag mit einer neuen Lackschicht versehen werden.Alternatively, the holes of the Sieboberfläche can be closed at the desired locations with a Lackaufdruck. A screen-applied lacquer layer can easily be washed out again after the job has been completed and the screen can be provided with a new lacquer layer for the next application.

Nach der in Fig. 8 dargestellten weiteren Variante ist im Inneren des Rundsiebs 44 ein auf der Siebachse 46 laufender Abdeckring 74 mit geschlossenen und perforierten Teilbereichen vorgesehen, der radial nach außen gegen den Siebmantel drückt und so in den geschlossenen Teilbereichen die Blattbildung verhindert.After the in Fig. 8 shown further variant, a running on the Siebachse 46 cover ring 74 is provided with closed and perforated portions in the interior of the round screen 44, which presses radially outward against the screen jacket and thus prevents sheet formation in the closed portions.

Bei allen geschilderten Verfahren werden Unterbrechungen 58 in der zweiten Papierlage 56 erzeugt, die einen durch Stanzen oder Schneiden nicht nachstellbaren Büttenrand aufweisen.In all the described methods interruptions 58 are generated in the second paper layer 56, which have a non-adjustable by punching or cutting deckle edge.

Nach einer weiteren Variante des Herstellungsverfahrens läuft der Sicherheitsfaden oder das Sicherheitsband an der zweiten Blattbildungseinheit, beispielsweise dem Kurzformer 40, ein. Das Rundsieb der zweiten Blattbildungseinheit kann dabei im Bereich des Sicherheitsfadens oder Sicherheitsbands abgeklebt sein oder das einlaufende Sicherheitselement kann das Rundsieb selbst entsprechend abdecken. Die dickere erste Papierbahn kann in dieser Variante mit oder ohne durchgehende Öffnung im Bereich des Sicherheitselements ausgebildet werden.According to a further variant of the manufacturing method, the security thread or the security tape runs on the second sheet forming unit, for example the short former 40. The round screen of the second sheet forming unit can be taped in the area of the security thread or safety bands or the incoming security element can cover the round screen itself accordingly. The thicker first paper web can be formed in this variant with or without a through opening in the area of the security element.

Ein Ausführungsbeispiel eines nach dieser Herstellungsvariante erzeugten Sicherheitspapiers 80 ist in Fig. 9 dargestellt. Die erste und zweite Papierlage 82 bzw. 84 sind nur zur Illustration mit verschiedenen Schraffuren dargestellt, sie treten am fertigen Sicherheitspapier 80 als einheitliche Papierlage in Erscheinung. Das in der Lücke der zweiten Papierlage 84 angeordnete Sicherheitselement 86 ist durch die Unterbrechung 88 in der ersten Papierlage 82 von beiden Seiten des Sicherheitspapiers her sichtbar und kann beispielsweise auf beiden Seiten optisch variable Elemente aufweisen. Falls erforderlich, kann das Sicherheitselement 86 mit einem Kleber in der Lücke der zweiten Papierlage befestigt sein. Die streifenförmige Unterbrechung oder die anderen erzeugten Öffnungen beliebiger Form können nach dem Trocknen des Sicherheitspapiers mit Polyurethan gefüllt werden.An embodiment of a security paper 80 produced according to this production variant is shown in FIG Fig. 9 shown. The first and second paper layers 82 and 84 are shown for illustration only with different hatchings, they appear on the finished security paper 80 as a uniform paper layer in appearance. The security element 86 arranged in the gap of the second paper layer 84 is visible from both sides of the security paper through the interruption 88 in the first paper layer 82 and may, for example, have optically variable elements on both sides. If necessary, the security element 86 may be secured with an adhesive in the gap of the second paper ply. The strip-like interruption or the other generated openings of any shape can be filled with polyurethane after drying the security paper.

Eine Abwandlung des mehrlagigen Sicherheitspapiers der Fig. 9, bei der die Unterbrechung zu einem beliebigen Zeitpunkt nach der Herstellung freigelegt werden kann, ist in Fig. 10 gezeigt. Wie in dem Ausführungsbeispiel der Fig. 9 ist in die zweite Papierlage 84 des Sicherheitspapiers ein diese Papierlage trennendes Sicherheitselement 86 und eine streifenförmige Unterbrechung 88 in der ersten Papierlage 82 erzeugt. In die streifenförmige Unterbrechung 88 wurde bei der Papierherstellung zusätzlich ein Releasestreifen 90 eingebracht, auf dessen Rückseite sich eine dünne Papierschicht 92 gebildet hat. Der Releasestreifen 90 kann am fertigen Sicherheitspapier zusammen mit der Papierablagerung 92 wie ein Aufreißfaden abgezogen werden und hinterlässt eine nachträglich eingebrachte Öffnung in der ersten Papierlage 82, die den Blick auf das Sicherheitselement 86 freigibt.A modification of the multilayer security paper of Fig. 9 , in which the interruption can be exposed at any time after manufacture, is in Fig. 10 shown. As in the embodiment of Fig. 9 In the second paper layer 84 of the security paper, a security element 86 separating this paper layer and a strip-shaped interruption 88 in the first paper layer 82 are produced. In the strip-shaped interruption 88, a release strip 90 was additionally introduced in papermaking, on the back of which a thin paper layer 92 has formed. The release strip 90 may be peeled off the finished security paper together with the paper deposit 92 like a tearing thread and leaves a subsequently inserted opening in the first paper layer 82 which releases the view of the security element 86.

Es versteht sich, dass auch mehr als zwei Papierlagen zu einem mehrlagigen Sicherheitspapier kombiniert werden können. Beispielsweise kann eine auf einer Gleichstromrundsieb erzeugte relativ dicke Papierlage, in die Wasserzeichen, Öffnungen oder ein Sicherheitselement eingebracht sein können, mit zwei oder mehreren dünneren Papierlagen kombiniert werden, die auf weiteren Blattbildungseinheiten, insbesondere den oben beschriebenen Kurzformern, gebildet sind. Diese Papierlagen können mit getrennten Blattbildungseinheiten erzeugt werden oder auch durch getrennte Stoffaufläufe auf demselben Kurzformer hergestellt werden.It is understood that more than two layers of paper can be combined into a multi-layer security paper. For example, a relatively thick paper layer formed on a DC round screen, into which watermarks, apertures or security element may be incorporated, may be combined with two or more thinner paper layers formed on further forming units, in particular the short formers described above. These paper layers can be produced with separate sheet forming units or even produced by separate headboxes on the same Kurzformer.

Claims (23)

  1. A multi-ply security paper for manufacturing security or value documents, such as banknotes or identification cards, in which - into a first paper ply (52) is introduced an endless security element (54; 66) that is freely accessible on at least one side of the paper ply (52),
    - the first paper ply (52) is covered on the freely accessible side of the security element (54; 66) by a second paper ply (56),
    characterized in that the first paper ply (52) exhibits a watermark (68), the second paper ply (56) is interrupted in the region of the watermark (68), and the second paper ply (56) exhibits one or more openings (58) in the region of the security element (54; 66).
  2. The security paper according to claim 1, characterized in that the measure of the opening(s) (58) perpendicular to the running direction of the endless security element (54; 66) is less than its width.
  3. The security paper according to at least one of claims 1 to 2, characterized in that the endless security element (54; 66) is furnished with optically variable effects, especially with a diffraction pattern, a hologram, a color-shift effect or another interference layer effect.
  4. The security paper according to at least one of claims 1 to 3, characterized in that the endless security element (54; 66) is provided with a print image, especially positive or inverse characters.
  5. The security paper according to at least one of claims 1 to 4, characterized in that the endless security element (54; 66) is a wide security band (54) that divides the first paper ply (52).
  6. The security paper according to at least one of claims 1 to 4, characterized in that the endless security element (54; 66) is a narrow security strip (66) that is embedded in the first paper ply (52).
  7. The security paper according to at least one of claims 1 to 6, characterized in that the first paper ply (52) exhibits a grammage of 60 to 80 g/m2, especially of 65 to 70 g/m2, and the second paper (56) ply exhibits a grammage of 15 to 45 g/m2, especially of 20 to 25 g/m2.
  8. The security paper according to at least one of claims 1 to 7, characterized in that the first paper ply (52) exhibits a grammage of 15 to 45 g/m2. especially of 20 to 25 g/m2, and the second paper ply (56) exhibits a grammage of 60 to 80 g/m2, especially of 65 to 70 g/m2.
  9. The security paper according to at least one of claims 1 to 8, characterized in that the endless security element (54; 66) is fixed in the first paper ply (52) with an adhesive.
  10. The security paper according to at least one of claims 1 to 9, characterized in that the second paper ply (82) exhibits a strip-shaped opening (88) in the region of the security element (86).
  11. The security paper according to claim 10, characterized in that the strip-shaped opening (88) is closed with a tear-openable release strip (90).
  12. The security paper according to at least one of claims 1 to 9, characterized in that the openings (58; 88) in the second paper ply (56; 82) are filled with a transparent material, especially a polyurethane adhesive.
  13. A method for manufacturing a security paper according to at least one of claims 1 to 12, in which
    - a first paper web (20) is formed, and an endless security element (22) is introduced into the first paper web (20) such that the endless security element (22) is freely accessible at least on one side of the paper web (20),
    - a watermark (68) is introduced into the first paper web (20),
    - a second paper web (30) is formed that, while still in the wet state, is merged and firmly joined with the first paper web (20) such that it covers the freely accessible side of the security element (22),
    - wherein into the second paper (30) web are introduced one or more openings (58) that, after the merger with the first paper web (20), come to lie in the region of the endless security element (22),
    - and wherein into the second paper web (30) is further introduced an interruption that, after the merger with the first paper web (20), comes to lie in the region of the watermark (68).
  14. The method according to claim 13, characterized in that the first (20) and/or second paper web (30) is produced in a direct-current cylinder mold paper machine (12,14).
  15. The method according to claim 13 or 14, characterized in that the first (20) and/or second paper web (30) is produced in a pressure former (40), in which the paper pulp is jetted onto a cylinder mold (44).
  16. The method according to at least one of claims 13 to 15, characterized in that the second paper web (30) is produced on a cylinder mold (44) whose holes are closed in sub-areas.
  17. The method according to claim 16, characterized in that the holes of the cylinder mold (44) are closed by applying, especially affixing, a cover strip (70).
  18. The method according to claim 16, characterized in that the holes of the cylinder mold (44) are closed by partially imprinting a lacquer layer.
  19. The method according to claim 16, characterized in that the holes of the cylinder mold (44) are closed by a cover ring (74) abutting the surface of revolution of the cylinder mold from inside.
  20. The method according to claim 16, characterized in that the endless security element (22) runs onto the cylinder mold (44) and closes the holes of the cylinder mold (44) at the sites run onto.
  21. The method according to one of claims 13 to 20, characterized in that the endless security element (22) is fixed in the first paper web (20) with an adhesive.
  22. The method according to one of claims 13 to 21, characterized in that into the second paper web(30) is introduced a strip-shaped opening (88) and, if applicable, said opening is closed with a tear-openable release strip (90) at paper manufacture.
  23. The method according to one of claims 13 to 21, characterized in that the openings in the second paper web (30) are filled with a transparent material, especially a polyurethane adhesive.
EP06723411.2A 2005-03-23 2006-03-14 Multi-ply security paper and method for the production thereof Not-in-force EP1899527B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL08019593T PL2031126T3 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper
EP08019594.4A EP2031127B1 (en) 2005-03-23 2006-03-14 Method for creating an opening in a multiple layer safety paper
EP08019593.6A EP2031126B1 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005013474 2005-03-23
DE102005045566A DE102005045566A1 (en) 2005-03-23 2005-09-23 Multi-layer security paper
PCT/EP2006/002333 WO2006099971A2 (en) 2005-03-23 2006-03-14 Multi-ply security paper

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP08019594.4A Division EP2031127B1 (en) 2005-03-23 2006-03-14 Method for creating an opening in a multiple layer safety paper
EP08019594.4A Division-Into EP2031127B1 (en) 2005-03-23 2006-03-14 Method for creating an opening in a multiple layer safety paper
EP08019593.6A Division EP2031126B1 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper
EP08019593.6A Division-Into EP2031126B1 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper

Publications (2)

Publication Number Publication Date
EP1899527A2 EP1899527A2 (en) 2008-03-19
EP1899527B1 true EP1899527B1 (en) 2016-06-22

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EP08019593.6A Not-in-force EP2031126B1 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper
EP06723411.2A Not-in-force EP1899527B1 (en) 2005-03-23 2006-03-14 Multi-ply security paper and method for the production thereof
EP08019594.4A Not-in-force EP2031127B1 (en) 2005-03-23 2006-03-14 Method for creating an opening in a multiple layer safety paper

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EP08019593.6A Not-in-force EP2031126B1 (en) 2005-03-23 2006-03-14 Method and suction device for manufacturing a safety paper

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US (1) US20090001709A1 (en)
EP (3) EP2031126B1 (en)
CN (3) CN102154945B (en)
DE (1) DE102005045566A1 (en)
ES (2) ES2717631T3 (en)
PL (1) PL2031126T3 (en)
RU (2) RU2401208C2 (en)
WO (1) WO2006099971A2 (en)

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EP2031127A1 (en) 2009-03-04
CN102174782A (en) 2011-09-07
WO2006099971A3 (en) 2007-04-19
CN102174782B (en) 2014-12-10
RU2433217C1 (en) 2011-11-10
EP1899527A2 (en) 2008-03-19
WO2006099971A2 (en) 2006-09-28
ES2717631T3 (en) 2019-06-24
US20090001709A1 (en) 2009-01-01
ES2556258T3 (en) 2016-01-14
EP2031127B1 (en) 2015-10-21
EP2031126A1 (en) 2009-03-04
EP2031126B1 (en) 2018-12-26
CN102154945B (en) 2012-11-28
PL2031126T3 (en) 2019-09-30
CN101146954A (en) 2008-03-19
DE102005045566A1 (en) 2006-09-28
RU2401208C2 (en) 2010-10-10
CN102154945A (en) 2011-08-17
CN101146954B (en) 2011-11-16

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