EP0500726B1 - Kunststoffträger mit wasserzeichen - Google Patents

Kunststoffträger mit wasserzeichen Download PDF

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Publication number
EP0500726B1
EP0500726B1 EP90917296A EP90917296A EP0500726B1 EP 0500726 B1 EP0500726 B1 EP 0500726B1 EP 90917296 A EP90917296 A EP 90917296A EP 90917296 A EP90917296 A EP 90917296A EP 0500726 B1 EP0500726 B1 EP 0500726B1
Authority
EP
European Patent Office
Prior art keywords
fact
mark
opacity
substrate
composition
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.)
Revoked
Application number
EP90917296A
Other languages
English (en)
French (fr)
Other versions
EP0500726A1 (de
Inventor
Christophe Halope
Alain Barthez
Jean-Paul Menez
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.)
ArjoWiggins SAS
Original Assignee
ArjoWiggins SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by ArjoWiggins SAS filed Critical ArjoWiggins SAS
Priority to AT90917296T priority Critical patent/ATE89514T1/de
Publication of EP0500726A1 publication Critical patent/EP0500726A1/de
Application granted granted Critical
Publication of EP0500726B1 publication Critical patent/EP0500726B1/de
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/10—Watermarks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/333—Watermarks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24835—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including developable image or soluble portion in coating or impregnation [e.g., safety paper, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers

Definitions

  • the present invention relates to a watermarked printable plastic support containing security marks having an effect resembling that of watermarks. These marks are subsequently designated under the term pseudo watermarks.
  • watermark sheets of paper It is common to watermark sheets of paper.
  • the watermarking of the paper can be done in different ways depending on whether watermarks called “real” or artificial watermarks called “pseudo watermarks" are produced.
  • fiduciary and security papers have watermarks which are obtained, during the manufacture of the sheet of paper, by round shapes comprising intaglio and / or relief imprints or by means of watermark rollers comprising drawings. recessed and / or raised associated with a flat table (Fourdrinier machine).
  • the light areas are due to the fact that the sheet thickness and the density of the fibers are smaller than the sheet thickness and the density of the fibers in the areas where the watermark has not been imprinted .
  • the dark areas are due to the fact that the thickness of the sheet and the density of the fibers are greater.
  • pseudo watermarks by printing or depositing a composition, generally fatty, which permanently transparentizes the sheet of paper. Transparentization can also be done using a hot-melt material; in patent application EP-203499 this material is a polyethylene.
  • Patent application FR-2 353 676 describes a process using an opacity modifying agent, namely which increases the opacity or, in a variant, which decreases the opacity.
  • This agent can be an aqueous suspension of a pigment or a filler or a solution of a chemical compound, a colored compound or a dye. This agent is applied during the manufacture of the sheet, on the fibrous web and before its removal from the fabric, so that said agent penetrates into the interstices of the web and causes a change in the opacity of the web to be treated in the selected areas, after drying.
  • This technique has the disadvantage of requiring special roller devices to apply this agent and preferably using a suction device to penetrate the agent into the interstices of the sheet.
  • US Patent 4,520,063 describes a synthetic resin sheet containing security marks similar to a watermark. Two dyes are applied having different migration rates in the sheet, the migration of the one migrating the fastest being stopped by the crosslinking of a crosslinking agent contained in the sheet or added to the dye. One observes, in reflected light a pattern which has the color of this dye on the surface of the sheet, and in transmitted light a pattern of mixed color is observed.
  • This method of producing a pseudo watermark in a plastic sheet is delicate because it requires an unobvious selection of dyes having different migration speeds in a given material and it requires a crosslinking operation.
  • Such documents may be diplomas, the diplomas having to last for at least the entire life of its holder. he can also other documents, particularly of value, such as titles, banknotes, identity cards, passports.
  • An object of the invention is therefore to provide a sheet made in particular of synthetic material which is printable and which includes authentication or security marks which are not very visible and even invisible in reflected light and perfectly visible in transmitted light.
  • Another object of the invention is to prevent counterfeiters or imitators from reproducing such marks of authenticity.
  • a third object of the invention is to provide a process for manufacturing such a sheet, this process being rapid and economical.
  • a sheet made in particular of synthetic material can be pseudo-watermarked by deposition or printing of a composition modifying the opacity at determined locations on a substrate of synthetic material.
  • This composition is then covered with a printable pigmented layer. It is remarkable that the marks obtained are not or hardly visible in reflected light and visible in transmitted light. This process is advantageously simple.
  • Another notable advantage of this method is that it allows the creation of pseudo watermarks of several tones (shades from light to dark, for example shaded); this type of watermark is more difficult to imitate and has more authentication data than a solid watermark.
  • the counterfeiters produce false watermarks by depositing a composition modifying the opacity at the places suitably chosen on the surface of a sheet of paper.
  • this method of counterfeiting is not possible.
  • the counterfeiter obtains commercially from a sheet of synthetic material coated with a printable layer, for example POLYART® manufactured and sold by the company ARJOBEX, several solutions arise.
  • the counterfeiter could dissolve the printable surface layer of POLYART® using solvent, then deposit a composition modifying the opacity in the desired locations, and then deposit the printable layer again on the surface.
  • the counterfeiter could obtain a sheet of synthetic material not coated with the printable layer, then deposit a composition modifying the opacity and then deposit a printable surface layer.
  • the brand is mono or polychrome.
  • the composition modifying the opacity is a pigmentary and / or colored, and / or fluorescent composition, it can be produced in an aqueous medium, in a non-aqueous solvent medium, or in a mixed water-solvent medium.
  • this composition is pigmentary, it preferably contains a mineral filler, for example titanium dioxide. It can also contain colored pigments.
  • the list of dyes suitable for the invention is not limited.
  • the composition modifying the opacity comprises at least one mineral filler and / or at least one pigmentary and / or soluble dye and / or at least one fluorescent agent, at least one binder or varnish, optionally at least one dispersant and optionally others additives.
  • composition modifying the opacity is advantageously a colored and / or fluorescent ink.
  • any basic synthetic substrate can be used to carry out the invention. It is preferable to use a film or a sheet made up of at least one polyolefin, in particular polyethylene or polypropylene. More particularly, the basic synthetic substrate contains essentially polyethylene, is formed by extrusion and is bi-stretched. This film may advantageously have undergone a chemical or Corona discharge treatment on its surface in order to improve its receptivity to the various compositions with which it will be coated.
  • the printable pigment composition is preferably a composition comprising a preferably mineral filler, at least one dispersant, at least one binder, optionally an insolubilizing agent, optionally an antistatic agent, optionally a pH regulating agent and optionally other additives.
  • additives can, for example, be anti-foaming agents, viscosity regulating agents, waxes.
  • Such a pigment composition may, for example, be chosen from those described in British patent GB 2,177,413. Other formulas making it possible to improve the printability may be suitable. Some compositions kill the fluorescence of the undercoat. A person skilled in the art will know how to adapt this composition to the chosen undercoat.
  • fillers are in the form of fine powders (average particle size less than 10 micrometers in general).
  • plastic pigments binders of acrylonitrile-vinylidene copolymers, of polystyrene for example.
  • any fluorescent agent may be suitable, however it is necessary to test this agent because certain agents exhibit fluorescence in a given environment and no fluorescence under other conditions. It may also be important that these agents exhibit good resistance to visible or invisible light, this depends on the use of the finished product. Agents which more particularly exhibit phosphorescence are not excluded.
  • a preferred method of producing a sheet according to the invention consists in printing at least once preferably, by photogravure, at least one of the faces of the basic plastic substrate by means of at least one opacity modifying composition. , then to lay on this or these faces, and possibly on the other face, the pigmented layer printable with one of the coating means used in the field of printing or the paper industry.
  • composition modifying the opacity taken in particular in the techniques of printing or the graphic arts may be suitable, but gravure printing is the method which provides the most regular and uniform deposit.
  • the composition modifying the opacity is deposited in one or more installments at places chosen above the first deposit.
  • the same composition or another composition can be used.
  • the marks obtained according to the invention form a pseudo watermark which can also be detected with a reading and / or recognition of watermarks.
  • the marks are fluorescent, they can be detected and observed on the surface of the document using UV light.
  • the basic plastic substrate is a bi-stretched film composed essentially of high density polyethylene sold under the brand Polyart® by the company ARJOBEX
  • composition modifying the opacity is carried out in an aqueous medium:
  • This opacifying composition is deposited on the plastic film by a laboratory gravure machine so as to print a pattern.
  • the film thus printed is then coated on both sides with a pigmentable composition which can be printed using an air knife coater; the pigment charge used is a mixture of calcium carbonate powder and calcined kaolin.
  • the final product has a plain pattern that is not visible in reflected light and visible in transmitted light.
  • the product produced according to the invention is therefore a flexible support of synthetic, printable material which includes a pseudo watermark allowing it to be authenticated.
  • Example 1 We return to Example 1; to the opacifying composition an optical brightener is added.
  • the optical brightener is sold under the brand BLANKOPHOR P, by BAYER; 0.24 part by commercial weight is added.
  • the final support can be further authenticated in UV light.
  • composition modifying the opacity is produced in a nonaqueous solvent medium, it contains:
  • a final printable support is produced as in Example 1.
  • a support is obtained comprising a pseudo dark watermark.
  • composition modifying the opacity is produced in a nonaqueous solvent medium, it contains:
  • a final printable support is produced as in Example 1.
  • a support is obtained which can be authenticated by a pseudo fluorescent watermark.
  • Example 1 we use Example 1 again, to the opacifying composition a VISCOFIL 4 RL PATE violet dye sold by SANDOZ is added. 0.08 part by commercial weight is added.
  • the opacifying composition of example 1 is used, for which the black dye is replaced by a liquid UNIPERSE GP green dye sold by CIBA GEIGY. 0.32 part by commercial weight is added.
  • a first motif is deposited using an airbrush. On a part of this motif, the opacifying composition is again deposited by airbrush.
  • Example 1 a printable pigmented layer is deposited as in Example 1.

Claims (13)

  1. Nachgiebiger synthetischer Druckträger mit mindestens einem Authentifikations- oder Sicherheitszeichen, welcher Trägerfolgendes umfaßt:
    - ein Substrat aus Kunststoff,
    - mindestens ein auf mindestens einer Substratseite aufgebrachtes oder aufgedrucktes Zeichen, welches Zeichen aus mindestens einer die Opazität des Substrats verändernden Zusammensetzung besteht,
    - mindestens eine das Zeichen abdeckende, bedruckbare Schicht aus einer Pigmentzusammensetzung, welche Schicht auf der das Zeichen aufweisenden Seite und gegebenenfalls auf der Substratseite ohne Zeichen aufgebracht ist; wobei das Zeichen im reflektierten Licht kaum bis überhaupt nicht sichtbar und im Durchlicht bestens sichtbar ist.
  2. Träger nach Anspruch 1, dadurch gekennzeichnet, daß das Zeichen mono- oder polychrom ist.
  3. Träger nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die die Opazität veränderende Zusammensetzung mindestens einen mineralischen Füllstoff und mindestens ein Bindemittel enthält.
  4. Träger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die die Opazität verändernde Zusammensetzung mindestens einen löslichen und/oder pigmentären Farbstoff enthält.
  5. Träger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die die Opazität verändernde Zusammensetzung ein fluoreszierendes Mittel enthält.
  6. Träger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die die Opazität verändernde Zusammensetzung eine färbige und/oder fluoreszierende Tinte ist.
  7. Träger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Substrat aus Kunststoff ein Film oder eine Folie ist, die aus mindestens einem Polyolefin besteht.
  8. Träger nach Anspruch 7, dadurch gekennzeichnet, daß das Polyolefin ausgewählt ist aus Polyethylenen oder Polypropylenen.
  9. Träger nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß das Substrat im wesentlichen aus hochdichtem Polyethylen besteht, durch Extrusion geformt, biverstreckt und gegebenenfalls einer Oberflächenbehandlung mit Koronaentladung unterzogen worden ist.
  10. Träger nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die bedruckbare Pigmentzusammensetzung vorzugsweise eine Zusammensetzung ist, die einen vorzugsweise mineralischen Füllstoff, mindestens ein Dispergierungsmittel, mindestens ein Bindemittel, gegebenenfalls ein löslichkeitshemmendes Mittel, gegebenenfalls ein antistatisches Mittel, gegebenenfalls ein pH-Regulans und gegebenenfalls weitere Additive enthält.
  11. Verfahren zur Herstellung eines Trägers nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß man mindestens eine die Opazität verändernde Zusammensetzung an bestimmten Stellen auf mindestens einer Seite eines Substrats aus Kunststoff aufbringt, um mindestens ein Authentifikations- oder Sicherheitszeichen zu bilden, und daß man auf der das Zeichen aufweisenden Seite und gegebenenfalls auf der anderen Seite eine bedruckbare Pigmentschicht aufbringt, welche Schicht das Zeichen abdeckt.
  12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß man die die Opazität veränderende Zusammensetzung mittels Tiefdruck aufbringt.
  13. Verfahren nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, daß die bedruckbare Pigmentschicht ein Gewicht zwischen 5 und 30 g/m² Trockengewicht, vorzugsweise etwa 10 g/m², hat.
EP90917296A 1989-11-14 1990-11-13 Kunststoffträger mit wasserzeichen Revoked EP0500726B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90917296T ATE89514T1 (de) 1989-11-14 1990-11-13 Kunststofftraeger mit wasserzeichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914925 1989-11-14
FR8914925A FR2654386B1 (fr) 1989-11-14 1989-11-14 Support plastique filigrane.

Publications (2)

Publication Number Publication Date
EP0500726A1 EP0500726A1 (de) 1992-09-02
EP0500726B1 true EP0500726B1 (de) 1993-05-19

Family

ID=9387387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90917296A Revoked EP0500726B1 (de) 1989-11-14 1990-11-13 Kunststoffträger mit wasserzeichen

Country Status (6)

Country Link
US (1) US5275870A (de)
EP (1) EP0500726B1 (de)
DE (1) DE69001677T2 (de)
ES (1) ES2042314T3 (de)
FR (1) FR2654386B1 (de)
WO (1) WO1991007285A1 (de)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536468A (en) * 1993-11-26 1996-07-16 Arjobex Limited Method of making watermarks on synthetic paper
US5879028A (en) * 1998-04-23 1999-03-09 Mobil Oil Corporation Weakened oriented high density polyethylene film for multilayer security document lamination
US5716695A (en) * 1996-02-15 1998-02-10 Mobil Oil Corp Cross-laminated multilayer film structures for use in the production of banknotes or the like
ZA955144B (en) * 1994-06-27 1996-12-23 Mobil Oil Corp Cross-laminated multilayer film structures for use in the production of banknotes or the like
US5698333A (en) * 1994-06-27 1997-12-16 Mobil Oil Corporation Multilayer film structures for use in the production of banknotes or the like
US5935696A (en) * 1997-06-11 1999-08-10 Mobil Oil Corporation Multilayer film structures for use in the production of banknotes or the like
US6294267B1 (en) 1994-06-27 2001-09-25 Exxonmobil Oil Corporation Core printed security documents
US5995638A (en) * 1995-08-28 1999-11-30 Ecole Polytechnique Federale De Lausanne Methods and apparatus for authentication of documents by using the intensity profile of moire patterns
US6249588B1 (en) * 1995-08-28 2001-06-19 ECOLE POLYTECHNIQUE FéDéRALE DE LAUSANNE Method and apparatus for authentication of documents by using the intensity profile of moire patterns
US6819775B2 (en) 1996-07-05 2004-11-16 ECOLE POLYTECHNIQUE FéDéRALE DE LAUSANNE Authentication of documents and valuable articles by using moire intensity profiles
DE19709606C1 (de) * 1997-03-08 1998-10-15 Beiersdorf Ag Pflaster mit langnachleuchtendem Aufdruck und Verfahren zu seiner Herstellung
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DE69001677D1 (de) 1993-06-24
DE69001677T2 (de) 1993-10-28
ES2042314T3 (es) 1993-12-01
WO1991007285A1 (fr) 1991-05-30
FR2654386B1 (fr) 1992-01-17
US5275870A (en) 1994-01-04
FR2654386A1 (fr) 1991-05-17
EP0500726A1 (de) 1992-09-02

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