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EP3296121B1 - Stamping sheet for applying a haptic security feature, method for the production of same and use of a stamping sheet - Google Patents

Stamping sheet for applying a haptic security feature, method for the production of same and use of a stamping sheet Download PDF

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Publication number
EP3296121B1
EP3296121B1 EP16189397.9A EP16189397A EP3296121B1 EP 3296121 B1 EP3296121 B1 EP 3296121B1 EP 16189397 A EP16189397 A EP 16189397A EP 3296121 B1 EP3296121 B1 EP 3296121B1
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EP
European Patent Office
Prior art keywords
stamping
pin
embossing
laser cutting
security feature
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
EP16189397.9A
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German (de)
French (fr)
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EP3296121A1 (en
Inventor
Reinhold Hiller
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.)
Kocher and Beck & Co Rotationsstanztechnik KG GmbH
Original Assignee
Kocher and Beck & Co Rotationsstanztechnik KG GmbH
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Priority to EP16189397.9A priority Critical patent/EP3296121B1/en
Publication of EP3296121A1 publication Critical patent/EP3296121A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/425Marking by deformation, e.g. embossing

Definitions

  • the invention relates to a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, nonwoven fabric, textile fabric, plastic, in particular polymer, or a mixture, in particular the invention relates to a embossing plate for applying a security feature on a material for making a banknote.
  • the invention further relates to a method for producing a embossing plate.
  • the invention relates to a use of a embossing plate for applying a haptic security feature on a sheet-like element, in particular for producing a banknote.
  • embossing plate As embossing plate is referred to in connection with the application, a thin, flat embossing tool, which is usually clamped for use on a cylinder, in particular a magnetic cylinder.
  • the embossing plate has structures on a surface by means of which surface deformations are introduced into the planar element when the embossing plate is used.
  • raw sheets are used, on which embossing, cutting and / or punching structures are formed by suitable methods.
  • raw sheets are thin hardened spring steel sheets, such as C60, with a thickness of, for example, 0.82 mm and a hardness usually from 46 to 52 HRC.
  • a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, non-woven fabric, textile fabric, plastic, in particular polymer, or a mixture, created, wherein the embossing plate a support plate and at least one of them protruding embossing pin comprises, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting.
  • embossing pin machined by means of laser cutting is brought into a shape suitable for the haptic safety feature with very high accuracy.
  • embossing pins which are rounded by means of chemical or electrochemical processes
  • an embossing pin with significantly stricter tolerance requirements can be realized.
  • embossing plate can therefore form haptic security features that meet the high demands of a securities printing company.
  • the embossing plate can therefore be used advantageously in particular for applying a security feature to bank notes, in particular bank notes made of plastic, in particular polymer.
  • other applications are conceivable.
  • embossing pins on the support plate can be suitably selected by the skilled person according to the security feature to be formed.
  • the distal end of the at least one embossing pin is rounded by means of laser cutting.
  • the embossing pin is thereby a punctiform Security feature similar to a point-shaped element used in Braille font created.
  • the embossing pin is shaped spherical cap.
  • a spherical cap shape while a design of the embossing pin is referred to as Kugelsegement or ball cap, manufacturing-and / or functionally deviations from the ideal shape of a ball cap are possible.
  • a micro-embossing structure is formed in one embodiment at the distal end of the at least one embossing pin by means of laser cutting.
  • a microstructure structure is an embossed structure with small dimensions.
  • a cross, a heart, a rhombus or any other shape may be provided on the molded spherical cap.
  • the embossing introduced by the micro-embossing structure can no longer be detected haptically. However, it can serve as an additional optical security feature.
  • Such security features can also be used, for example, in the packaging industry for packaging consumer goods or industrial goods as counterfeit protection.
  • the shape and size of the embossing pin is suitable depending on the requirements of the haptic security feature by the skilled person selectable.
  • the maximum diameter of the at least one embossing pin is between about 1.0 mm and about 4 mm.
  • the height of the at least one embossing pin is in advantageous embodiments between about 0.4 mm and about 2 mm.
  • a method for producing a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture created the embossing plate a support plate and has at least one projecting embossing pin, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting.
  • the distal end of the at least one embossing pin is rounded by means of laser cutting.
  • a spherical cap-shaped embossing pin is preferably formed.
  • a micro-embossing structure is formed at the distal end of the at least one embossing pin by means of laser cutting.
  • the shape and size of the micro-embossed structure can be suitably selected in accordance with a material to be processed with the embossing plate and / or an authority / company requesting the security feature.
  • an additive or generative process is used in one embodiment.
  • a blank sheet masked with an etch-resistant material is placed in an acid bath.
  • the residence time in the acid bath is suitably selectable by the person skilled in the art in order to obtain a carrier plate having a desired thickness.
  • the raw form of the embossing pin thus obtained can be brought into a desired shape directly by laser cutting in one embodiment.
  • the raw form of the at least one embossing pin is milled before machining by means of laser cutting in the form. It is provided in one embodiment that only a distal end of the embossing pin is additionally processed by means of laser cutting.
  • a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture created, the embossing plate a support plate and at least one thereof projecting embossing pin, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting. Thanks to the use of such embossing plate security features can be formed with high quality.
  • a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture of substances in the production of a bill is provided.
  • Fig. 1 schematically shows a banknote 1 with a haptic security feature 10 in the form of two punctiform imprints.
  • the value of the bill ie five, embossed as a haptic security feature 10 as Braille characters.
  • this security feature is merely exemplary and numerous other haptic security features are conceivable.
  • An embossing is done by embossing tool.
  • Fig. 2 schematically shows in a perspective view of a embossing plate 2 designed embossing tool in a clamping of the embossing plate 2 on a cylinder 3.
  • the embossing plate 2 is at the periphery of the cylinder 3 by means of Fig. 2 not shown clamping elements, for example, fastened by means of terminal strips.
  • a required length of the embossing plate 2 is determined inter alia by the diameter of the cylinder and / or the distance of the clamping elements in the circumferential direction of the cylinder and a clamping length necessary for clamping on the clamping elements.
  • haptic security feature 10 For applying the haptic security feature 10 according to Fig. 1 are provided on the embossing plate 2 suitable structures.
  • Fig. 3 shows in a sectioned, greatly enlarged representation of a section of embossing plate 2 comprising a support plate 20 and two thereof projecting embossing pins 21 for forming the security feature 10 according to Fig. 1 ,
  • the embossing pins 21 shown are spherical cap-shaped.
  • the diameter D of each embossing pin is between approximately 1.0 mm and approximately 4 mm.
  • the height H of the embossing pins 21 is in each case between about 0.4 mm and about 2 mm.
  • At least one distal end of the at least one embossing pin 21 is processed by means of laser cutting.
  • FIGS. 4 to 6 illustrate a method of manufacturing the embossing plate 2 according to FIG Fig. 3 ,
  • the etching-resistant material 5 is printed, for example. The thus masked blank sheet 4 is then inserted into an acid bath, not shown.
  • the residence time in the acid bath is chosen such that an in Fig. 5 schematically represented intermediate product 6 is provided with a support plate 60 having a desired thickness, projecting from the support plate 50 Rohformen 61 of the embossing pins.
  • the embossing pin 21 is brought into its desired shape according to the later use by means of the laser beam 7.
  • - as shown schematically in Fig. 6 shown - a distal end of the embossing pin 21 rounded.
  • a milling of the in Fig. 5 represented intermediate product 6 take place.
  • the in Fig. 5 represented intermediate product 6 brought directly by means of laser cutting into a desired final shape.
  • a stamping plate 2 of high quality can be produced, which can be advantageously used in particular for the production of banknotes 1 with haptic security features 10.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laser Beam Processing (AREA)

Description

ANWENDUNGSGEBIET UND STAND DER TECHNIKAREA OF APPLICATION AND PRIOR ART

Die Erfindung betrifft ein Prägeblech zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch, insbesondere betrifft die Erfindung ein Prägeblech zum Aufbringen eines Sicherheitsmerkmals auf ein Material zur Herstellung einer Banknote. Die Erfindung betrifft weiter ein Verfahren zur Herstellung eines Prägeblechs. Schließlich betrifft die Erfindung eine Verwendung eines Prägeblechs zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element, insbesondere zur Herstellung einer Banknote.The invention relates to a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, nonwoven fabric, textile fabric, plastic, in particular polymer, or a mixture, in particular the invention relates to a embossing plate for applying a security feature on a material for making a banknote. The invention further relates to a method for producing a embossing plate. Finally, the invention relates to a use of a embossing plate for applying a haptic security feature on a sheet-like element, in particular for producing a banknote.

Als Prägeblech wird im Zusammenhang mit der Anmeldung ein dünnes, flächiges Prägewerkzeug bezeichnet, welches für einen Gebrauch üblicherweise auf einen Zylinder, insbesondere einen Magnetzylinder aufgespannt wird. Das Prägeblech weist dabei an einer Oberfläche Strukturen auf, mittels welcher bei Verwendung des Prägeblechs Oberflächenverformungen in das flächige Element eingebracht werden.As embossing plate is referred to in connection with the application, a thin, flat embossing tool, which is usually clamped for use on a cylinder, in particular a magnetic cylinder. In this case, the embossing plate has structures on a surface by means of which surface deformations are introduced into the planar element when the embossing plate is used.

Für die Herstellung von Stanz- oder Prägeblechen werden Rohbleche verwendet, auf welchen durch geeignete Verfahren Präge-, Schneid- und/oder Stanzstrukturen ausgebildet werden. Als Rohbleche dienen dünne gehärtete Federstahlbleche, beispielsweise aus C60, mit einer Stärke von beispielsweise 0,82 mm und einer Härte in der Regel von 46 bis 52 HRC.For the production of stamped or embossed sheets raw sheets are used, on which embossing, cutting and / or punching structures are formed by suitable methods. As raw sheets are thin hardened spring steel sheets, such as C60, with a thickness of, for example, 0.82 mm and a hardness usually from 46 to 52 HRC.

Zum Ausformen der Strukturen ist es bekannt, Masken für die Strukturen aus einem ätzfesten Material positionsgenau auf das Rohblech aufzutragen, insbesondere aufzudrucken, und anschließend das bedruckte Rohblech in ein Säurebad zu geben. In dem Säurebad wird das Rohblech so lange einseitig geätzt bis ein Restblech mit einer gewünschten Stärke von beispielsweise ca. 0,2 mm vorliegt. Die durch die Masken geschützten Bereiche ragen von dem Restblech ab. In anschließenden Arbeitsgängen werden diese Strukturen umfräst und je nach Anforderung mit einer Schneidkante ausgebildet oder verrundet. Zu diesem Zweck ist es bekannt, chemische oder elektrochemische Prozesse einzusetzen.For shaping the structures, it is known to apply masks for the structures of an etching-resistant material accurately positioned on the sheet metal, in particular imprint, and then to give the printed sheet metal in an acid bath. In the acid bath, the raw sheet is etched on one side until a residual sheet having a desired thickness of, for example, about 0.2 mm is present. The protected by the masks areas protrude from the residual sheet. In subsequent operations, these structures are milled and formed or rounded depending on the requirements with a cutting edge. For this purpose it is known to use chemical or electrochemical processes.

Das Dokument EP 1 629 994 A2 offenbart ein Sicherheitselement nach dem Oberbegriff des Anspruchs 1.The document EP 1 629 994 A2 discloses a security element according to the preamble of claim 1.

AUFGABE UND LÖSUNGTASK AND SOLUTION

Es ist eine Aufgabe der vorliegenden Erfindung, ein Prägeblech zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch, zu schaffen, welches eine Ausformung des haptischen Sicherheitsmerkmals mit hoher Qualität ermöglicht und daher insbesondere zum Aufbringen eines haptischen Sicherheitsmerkmals für Banknoten geeignet ist. Es ist eine weitere Aufgabe, ein Verfahren zum Herstellen eines derartigen Prägeblechs zu schaffen.It is an object of the present invention to provide a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, in particular polymer, or a mixture, which has a shape of the haptic Security feature with high quality and therefore is particularly suitable for applying a haptic security feature for banknotes. It is a further object to provide a method of making such a stamping sheet.

Diese Aufgaben werden gelöst durch die Gegenstände der unabhängigen Ansprüche. Vorteilhafte Ausgestaltungen sind in den abhängigen Ansprüchen beschrieben.These objects are achieved by the subject matters of the independent claims. Advantageous embodiments are described in the dependent claims.

Gemäß einem ersten Aspekt wird ein Prägeblech zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch, geschaffen, wobei das Prägeblech eine Trägerplatte und mindestens einen davon abragenden Prägepin umfasst, und wobei mindestens ein distales Ende des mindestens einen Prägepins mittels Laserschneiden bearbeitet ist.According to a first aspect, a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, non-woven fabric, textile fabric, plastic, in particular polymer, or a mixture, created, wherein the embossing plate a support plate and at least one of them protruding embossing pin comprises, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting.

Der mittels Laserschneiden bearbeitete Prägepin ist mit einer sehr hohen Genauigkeit in eine für das haptische Sicherheitsmerkmal geeignete Form gebracht. Im Unterschied zu herkömmlichen Prägepins, welche mittels chemischer oder elektrochemischer Verfahren verrundet sind, ist ein Prägepin mit deutlich strengeren Toleranzanforderungen realisierbar. Mit einem derartigen Prägeblech lassen sich daher haptische Sicherheitsmerkmale ausformen, die auch die hohen Anforderungen einer Wertpapierdruckerei erfüllen. Das Prägeblech ist folglich insbesondere für ein Aufbringen eines Sicherheitsmerkmals auf Banknoten, insbesondere Banknoten aus Kunststoff, insbesondere Polymer, vorteilhaft einsetzbar. Es sind jedoch auch andere Anwendungen denkbar.The embossing pin machined by means of laser cutting is brought into a shape suitable for the haptic safety feature with very high accuracy. In contrast to conventional embossing pins, which are rounded by means of chemical or electrochemical processes, an embossing pin with significantly stricter tolerance requirements can be realized. With such embossing plate can therefore form haptic security features that meet the high demands of a securities printing company. The embossing plate can therefore be used advantageously in particular for applying a security feature to bank notes, in particular bank notes made of plastic, in particular polymer. However, other applications are conceivable.

Es versteht sich, dass die Form, Zahl und Anordnung der Prägepins auf der Trägerplatte entsprechend des auszuformenden Sicherheitsmerkmals durch den Fachmann geeignet gewählt werden kann.It is understood that the shape, number and arrangement of the embossing pins on the support plate can be suitably selected by the skilled person according to the security feature to be formed.

Gemäß einer ersten Ausgestaltung, ist das distale Ende des mindestens einen Prägepins mittels Laserschneiden verrundet. Mittels des Prägepins wird dabei ein punktförmiges Sicherheitsmerkmal ähnlich eines in der Braille-Schrift verwendeten punktförmigen Elements geschaffen.According to a first embodiment, the distal end of the at least one embossing pin is rounded by means of laser cutting. By means of the embossing pin is thereby a punctiform Security feature similar to a point-shaped element used in Braille font created.

In vorteilhaften Ausgestaltungen ist dabei der Prägepin kugelkappenförmig geformt. Als kugelkappenförmig wird dabei eine Gestaltung des Prägepins als Kugelsegement oder Kugelkappe bezeichnet, wobei fertigungstechnisch- und/oder funktionsbedingt Abweichungen von der Idealform einer Kugelkappe möglich sind.In advantageous embodiments of the embossing pin is shaped spherical cap. As a spherical cap shape while a design of the embossing pin is referred to as Kugelsegement or ball cap, manufacturing-and / or functionally deviations from the ideal shape of a ball cap are possible.

Alternativ und/oder zusätzlich zu einer kugelkappenförmigen Ausgestaltung ist in einer Ausgestaltung an dem distalen Ende des mindestens einen Prägepins mittels Laserschneiden eine Mikroprägestruktur ausgeformt. Als Mikroprägestruktur wird dabei eine Prägestruktur mit kleinen Abmaßen bezeichnet. Beispielsweise kann an der ausgeformten Kugelkappe ein Kreuz, ein Herz, eine Raute oder eine beliebige andere Form vorgesehen sein. Die durch die Mikroprägestruktur eingebrachte Prägung ist dabei in der Regel nicht mehr haptisch erfassbar. Sie kann jedoch als zusätzliches optisches Sicherheitsmerkmal dienen. Derartige Sicherheitsmerkmale sind beispielsweise auch in der Verpackungsindustrie zum Verpacken von Konsum- oder Industriegütern als Fälschungsschutz einsetzbar.Alternatively and / or in addition to a spherical cap-shaped configuration, a micro-embossing structure is formed in one embodiment at the distal end of the at least one embossing pin by means of laser cutting. In this case, a microstructure structure is an embossed structure with small dimensions. For example, a cross, a heart, a rhombus or any other shape may be provided on the molded spherical cap. As a rule, the embossing introduced by the micro-embossing structure can no longer be detected haptically. However, it can serve as an additional optical security feature. Such security features can also be used, for example, in the packaging industry for packaging consumer goods or industrial goods as counterfeit protection.

Die Form und Größe des Prägepins ist je nach Anforderung an das haptische Sicherheitsmerkmal durch den Fachmann geeignet wählbar. In vorteilhaften Ausgestaltungen beträgt der maximale Durchmesser des mindestens einen Prägepins zwischen ca. 1,0 mm und ca. 4 mm. Die Höhe des mindestens einen Prägepins beträgt in vorteilhaften Ausgestaltungen zwischen ca. 0,4 mm und ca. 2 mm.The shape and size of the embossing pin is suitable depending on the requirements of the haptic security feature by the skilled person selectable. In advantageous embodiments, the maximum diameter of the at least one embossing pin is between about 1.0 mm and about 4 mm. The height of the at least one embossing pin is in advantageous embodiments between about 0.4 mm and about 2 mm.

Gemäß einem zweiten Aspekt wird ein Verfahren zum Herstellen eines Prägeblechs zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch geschaffen, wobei das Prägeblech eine Trägerplatte und mindestens einen davon abragenden Prägepin aufweist, und wobei mindestens ein distales Ende des mindestens einen Prägepins mittels Laserschneiden bearbeitet wird.According to a second aspect, a method for producing a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture created, the embossing plate a support plate and has at least one projecting embossing pin, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting.

In vorteilhaften Ausgestaltungen wird das distale Ende des mindestens einen Prägepins mittels Laserschneiden verrundet. Dabei wird vorzugsweise ein kugelkappenförmiger Prägepin geformt.In advantageous embodiments, the distal end of the at least one embossing pin is rounded by means of laser cutting. In this case, a spherical cap-shaped embossing pin is preferably formed.

In einer Ausgestaltung wird an dem distalen Ende des mindestens einen Prägepins mittels Laserschneiden eine Mikroprägestruktur ausgeformt. Die Form und Größe der Mikroprägestruktur kann dabei entsprechend eines mit dem Prägeblech zu bearbeiteten Materials und/oder einer/eines das Sicherheitsmerkmal fordernden Behörde/Unternehmens geeignet gewählt werden.In one embodiment, a micro-embossing structure is formed at the distal end of the at least one embossing pin by means of laser cutting. The shape and size of the micro-embossed structure can be suitably selected in accordance with a material to be processed with the embossing plate and / or an authority / company requesting the security feature.

Für die Ausformung einer Rohform des Prägepins an der Trägerplatte wird in einer Ausgestaltung ein additives oder generatives Verfahren eingesetzt.For the formation of a raw form of the embossing pin on the support plate, an additive or generative process is used in one embodiment.

In vorteilhaften Ausgestaltungen wird, um eine Rohform des mindestens einen Prägepins zu erhalten, ein mit einem ätzresistenten Material maskiertes Rohblech in ein Säurebad gelegt. Die Verweildauer in dem Säurebad ist dabei durch den Fachmann geeignet wählbar, um eine Trägerplatte mit einer gewünschten Stärke zu erhalten.In advantageous embodiments, in order to obtain a raw form of the at least one embossing pin, a blank sheet masked with an etch-resistant material is placed in an acid bath. The residence time in the acid bath is suitably selectable by the person skilled in the art in order to obtain a carrier plate having a desired thickness.

Die so erhaltene Rohform des Prägepins kann in einer Ausgestaltung unmittelbar mittels Laserschneiden in eine gewünschte Form gebracht werden. In anderen Ausgestaltungen wird die Rohform des mindestens einen Prägepins vor einer Bearbeitung mittels Laserschneiden in Form gefräst. Dabei ist in einer Ausgestaltung vorgesehen, dass lediglich ein distales Ende des Prägepins zusätzlich mittels Laserschneiden bearbeitet wird.The raw form of the embossing pin thus obtained can be brought into a desired shape directly by laser cutting in one embodiment. In other embodiments, the raw form of the at least one embossing pin is milled before machining by means of laser cutting in the form. It is provided in one embodiment that only a distal end of the embossing pin is additionally processed by means of laser cutting.

Gemäß einem dritten Aspekt ist die Verwendung eines Prägeblechs zum Aufbringen eines haptischen Sicherheitsmerkmals auf ein flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch geschaffen, wobei das Prägeblech eine Trägerplatte und mindestens einen davon abragenden Prägepin umfasst, und wobei mindestens ein distales Ende des mindestens einen Prägepins mittels Laserschneiden bearbeitet ist. Dank der Verwendung eines derartigen Prägeblechs lassen sich Sicherheitsmerkmale mit hoher Qualität ausformen.According to a third aspect, the use of a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture created, the embossing plate a support plate and at least one thereof projecting embossing pin, and wherein at least one distal end of the at least one embossing pin is processed by means of laser cutting. Thanks to the use of such embossing plate security features can be formed with high quality.

In einer vorteilhaften Ausgestaltung ist die Verwendung eines Prägeblechs zum Aufbringen eines haptischen Sicherheitsmerkmals auf einen flächiges Element aus Papier, insbesondere Sicherheitspapier, Pappe, Karton, Vliesstoff, Textilgewebe, Kunststoff, insbesondere Polymer, oder einem Stoffgemisch bei der Herstellung einer Banknote vorgesehen.In an advantageous embodiment, the use of a embossing plate for applying a haptic security feature on a sheet of paper, in particular security paper, cardboard, cardboard, nonwoven fabric, textile fabric, plastic, especially polymer, or a mixture of substances in the production of a bill is provided.

KURZBESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Weitere Vorteile und Aspekte der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung von bevorzugten Ausführungsbeispielen der Erfindung, die nachfolgend anhand der Figuren erläutert sind. Dabei zeigen:

Fig. 1
eine Banknote mit einem haptischen Sicherheitsmerkmal in Form von zwei punktförmigen Prägungen;
Fig. 2
in einer perspektivischen Darstellung ein als Prägeblech gestaltetes Prägewerkzeug bei einem Aufspannen auf einen Zylinder;
Fig. 3
in einer geschnittenen, stark vergrößerten Darstellung einen Ausschnitt eines Prägeblechs mit zwei Prägepins zur Ausformung von zwei punktförmigen Prägungen;
Fig. 4
in einer geschnittenen, stark vergrößerten Darstellung einen Ausschnitt eines maskierten Rohblechs zur Herstellung des Prägeblechs gemäß Fig. 3;
Fig. 5
in einer geschnittenen, stark vergrößerten Darstellung einen Ausschnitt eines einem Säurebad entnommenen Zwischenprodukts bei der Herstellung des Prägeblechs gemäß Fig. 3; und
Fig. 6
in einer geschnittenen, stark vergrößerten Darstellung einen Ausschnitt eines mittels Laserschneiden bearbeiteten Zwischenprodukts zur Herstellung des Prägeblechs gemäß Fig. 3.
Further advantages and aspects of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are explained below with reference to the figures. Showing:
Fig. 1
a banknote with a haptic security feature in the form of two punctiform imprints;
Fig. 2
in a perspective view designed as embossing plate embossing tool when clamping on a cylinder;
Fig. 3
in a cut, greatly enlarged view of a section of a embossing plate with two embossing pins for the formation of two punctiform embossments;
Fig. 4
in a sectioned, greatly enlarged view of a section of a masked blank sheet for the production of embossing plate according to Fig. 3 ;
Fig. 5
in a sectioned, greatly enlarged view of a section of an acid bath removed intermediate in the preparation of embossing plate according to Fig. 3 ; and
Fig. 6
in a sectioned, greatly enlarged view of a section of a machined by laser cutting intermediate product for the production of embossing plate according to Fig. 3 ,

DETAILLIERTE BESCHREIBUNG DER AUSFÜHRUNGSBEISPIELEDETAILED DESCRIPTION OF THE EMBODIMENTS

Fig. 1 zeigt schematisch eine Banknote 1 mit einem haptischen Sicherheitsmerkmal 10 in Form von zwei punktförmigen Prägungen. In dem dargestellten Ausführungsbeispiel ist als haptisches Sicherheitsmerkmal 10 der Wert der Banknote, d.h. fünf, als Braille-Zeichen eingeprägt. Dieses Sicherheitsmerkmal ist jedoch lediglich beispielhaft und es sind zahlreiche andere haptische Sicherheitsmerkmale denkbar. Ein Einprägen erfolgt mittels Prägewerkzeug. Fig. 1 schematically shows a banknote 1 with a haptic security feature 10 in the form of two punctiform imprints. In the illustrated embodiment, the value of the bill, ie five, embossed as a haptic security feature 10 as Braille characters. However, this security feature is merely exemplary and numerous other haptic security features are conceivable. An embossing is done by embossing tool.

Fig. 2 zeigt schematisch in einer perspektivischen Darstellung ein als Prägeblech 2 gestaltetes Prägewerkzeug bei einem Aufspannen des Prägeblechs 2 auf einen Zylinder 3. Das Prägeblech 2 wird am Umfang des Zylinders 3 mittels in Fig. 2 nicht dargestellter Klemmelemente, beispielsweise mittels Klemmleisten befestigt. Eine erforderliche Länge des Prägeblechs 2 ist dabei u.a. durch den Durchmesser des Zylinders und/oder den Abstand der Klemmelemente in Umfangsrichtung des Zylinders und eine für das Einspannen an den Klemmelementen notwendige Spannlänge festgelegt. Fig. 2 schematically shows in a perspective view of a embossing plate 2 designed embossing tool in a clamping of the embossing plate 2 on a cylinder 3. The embossing plate 2 is at the periphery of the cylinder 3 by means of Fig. 2 not shown clamping elements, for example, fastened by means of terminal strips. A required length of the embossing plate 2 is determined inter alia by the diameter of the cylinder and / or the distance of the clamping elements in the circumferential direction of the cylinder and a clamping length necessary for clamping on the clamping elements.

Zum Aufbringen des haptischen Sicherheitsmerkmals 10 gemäß Fig. 1 sind an dem Prägeblech 2 geeignete Strukturen vorgesehen.For applying the haptic security feature 10 according to Fig. 1 are provided on the embossing plate 2 suitable structures.

Fig. 3 zeigt in einer geschnittenen, stark vergrößerten Darstellung einen Ausschnitt eines Prägeblechs 2 umfassend eine Trägerplatte 20 und zwei davon abragende Prägepins 21 zur Ausformung des Sicherheitsmerkmals 10 gemäß Fig. 1. Die dargestellten Prägepins 21 sind kugelkappenförmig. Im Bereich einer Oberfläche der Trägerplatte beträgt der Durchmesser D jedes Prägepins zwischen ca. 1,0 mm und ca. 4 mm. Die Höhe H der Prägepins 21 beträgt jeweils zwischen ca. 0,4 mm und ca. 2 mm. Fig. 3 shows in a sectioned, greatly enlarged representation of a section of embossing plate 2 comprising a support plate 20 and two thereof projecting embossing pins 21 for forming the security feature 10 according to Fig. 1 , The embossing pins 21 shown are spherical cap-shaped. In the region of a surface of the carrier plate, the diameter D of each embossing pin is between approximately 1.0 mm and approximately 4 mm. The height H of the embossing pins 21 is in each case between about 0.4 mm and about 2 mm.

Erfindungsgemäß ist mindestens ein distales Ende des mindestens einen Prägepins 21 mittels Laserschneiden bearbeitet.According to the invention, at least one distal end of the at least one embossing pin 21 is processed by means of laser cutting.

Die Figuren 4 bis 6 illustrieren ein Verfahren zum Herstellen des Prägeblechs 2 gemäß Fig. 3.The FIGS. 4 to 6 illustrate a method of manufacturing the embossing plate 2 according to FIG Fig. 3 ,

In einem ersten Schritt wird ein Rohblech 4 wie in Fig. 4 dargestellt an den für die Ausbildung der Prägepins 21 vorgesehenen Stellen mit einem ätzresistenten Material 5 maskiert. Das ätzresistente Material 5 wird beispielsweise aufgedruckt. Das so maskierte Rohblech 4 wird anschließend in ein nicht dargestelltes Säurebad eingelegt.In a first step, a blank sheet 4 as in Fig. 4 shown masked at the provided for the formation of the embossing pins 21 points with an etch-resistant material 5. The etching-resistant material 5 is printed, for example. The thus masked blank sheet 4 is then inserted into an acid bath, not shown.

Die Verweildauer in dem Säurebad wird dabei derart gewählt, dass ein in Fig. 5 schematisch dargestelltes Zwischenprodukt 6 mit einer Trägerplatte 60 mit einer gewünschten Stärke geschaffen wird, wobei von der Trägerplatte 50 Rohformen 61 der Prägepins abragen.The residence time in the acid bath is chosen such that an in Fig. 5 schematically represented intermediate product 6 is provided with a support plate 60 having a desired thickness, projecting from the support plate 50 Rohformen 61 of the embossing pins.

In einem nächsten Schritt wird mittels Laserstrahl 7 der Prägepin 21 in seine entsprechend dem späteren Einsatz gewünschte Form gebracht. Insbesondere wird - wie schematisch in Fig. 6 dargestellt - ein distales Ende des Prägepins 21 verrundet.In a next step, the embossing pin 21 is brought into its desired shape according to the later use by means of the laser beam 7. In particular - as shown schematically in Fig. 6 shown - a distal end of the embossing pin 21 rounded.

Vor der Bearbeitung des Prägepins 21 mittels Laserschneiden kann in einer Ausgestaltung eine Fräsbearbeitung des in Fig. 5 dargestellten Zwischenprodukts 6 erfolgen. In anderen Ausgestaltungen wird das in Fig. 5 dargestellte Zwischenprodukt 6 unmittelbar mittels Laserschneiden in eine gewünschte Endform gebracht.Before machining the embossing pin 21 by means of laser cutting, in one embodiment, a milling of the in Fig. 5 represented intermediate product 6 take place. In other embodiments, the in Fig. 5 represented intermediate product 6 brought directly by means of laser cutting into a desired final shape.

Durch das beschriebene Verfahren ist ein Prägeblech 2 von hoher Qualität herstellbar, welches insbesondere zur Herstellung von Banknoten 1 mit haptischen Sicherheitsmerkmalen 10 vorteilhaft einsetzbar ist.By the method described, a stamping plate 2 of high quality can be produced, which can be advantageously used in particular for the production of banknotes 1 with haptic security features 10.

Claims (13)

  1. Stamping sheet for applying a security feature (10) onto a planar element made of paper, in particular security paper, paperboard, cardboard, non-woven fabric, textile fabric, synthetic material, in particular polymer, or a mixture of materials, comprising a supporting plate (20) and at least one stamping pin (21) protruding therefrom, characterized in that the security feature is haptic, and in that at least a distal end of the at least one stamping pin (21) is machined by laser cutting.
  2. Stamping sheet according to claim 1, characterized in that the distal end of the at least one stamping pin (21) is chamfered by laser cutting.
  3. Stamping sheet according to claim 2, characterized in that the stamping pin (21) has the shape of a spherical cap.
  4. Stamping sheet according to claim 1, 2 or 3, characterized in that on the distal end of the at least one stamping pin (21) a micro stamping structure is formed by laser cutting.
  5. Stamping sheet according to any of claims 1 to 4, characterized in that the maximum diameter (D) of the at least one stamping pin (21) is between approx. 1.0 mm and approx. 4 mm.
  6. Stamping sheet according to any of claims 1 to 5, characterized in that the height (H) of the at least one stamping pin (21) is between approx. 0.4 mm and approx. 2 mm.
  7. Method for the production of a stamping sheet (2) for applying a haptic security feature (10) onto a planar element made of paper, in particular security paper, paperboard, cardboard, non-woven fabric, textile fabric, synthetic material, in particular polymer, or a mixture of materials, wherein the stamping sheet (2) comprises a supporting plate (20) and at least one stamping pin (21) protruding therefrom, characterized in that at least a distal end of the at least one stamping pin (21) is machined by laser cutting.
  8. Method according to claim 7, characterized in that the distal end of the at least one stamping pin (21) is chamfered by laser cutting.
  9. Method according to claim 7 or 8, characterized in that on the distal end of the at least one stamping pin (21) a micro stamping structure is formed by laser cutting.
  10. Method according to any of claims 7 to 9, characterized in that, in order to obtain a blank shape (61) of the at least one stamping pin (21), a raw sheet (3) masked with an etch-resistant material (4) is immerged into an acid bath.
  11. Method according to claim 10, characterized in that the blank shape (61) of the at least one stamping pin (21) is milled into shape prior to machining by laser cutting.
  12. Use of a stamping sheet for applying a haptic security feature onto a planar element made of paper, in particular security paper, paperboard, cardboard, non-woven fabric, textile fabric, synthetic material, in particular polymer, or a mixture of materials, wherein the stamping sheet comprises a supporting plate and at least one stamping pin protruding therefrom, characterized in that at least a distal end of the at least one stamping pin is machined by laser cutting.
  13. Use of a stamping sheet according to claim 12, for applying a haptic security feature onto a planar element made of paper, in particular security paper, paperboard, cardboard, non-woven fabric, textile fabric, synthetic material, in particular polymer, or a mixture of materials during the production of a banknote.
EP16189397.9A 2016-09-19 2016-09-19 Stamping sheet for applying a haptic security feature, method for the production of same and use of a stamping sheet Not-in-force EP3296121B1 (en)

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EP16189397.9A EP3296121B1 (en) 2016-09-19 2016-09-19 Stamping sheet for applying a haptic security feature, method for the production of same and use of a stamping sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16189397.9A EP3296121B1 (en) 2016-09-19 2016-09-19 Stamping sheet for applying a haptic security feature, method for the production of same and use of a stamping sheet

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EP3296121A1 EP3296121A1 (en) 2018-03-21
EP3296121B1 true EP3296121B1 (en) 2019-03-20

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Publication number Priority date Publication date Assignee Title
DE102004041434B4 (en) * 2004-08-27 2013-10-10 Credit Card Supplies Method for producing a embossing plate for a hot-cold laminating press with three-dimensional structures
WO2012078221A1 (en) * 2010-12-07 2012-06-14 Travel Tags, Inc. Lens sheet having lens array formed in preselected areas and articles formed therefrom

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