EP1629994A2 - Feuille métallique en relief avec une structure tridimensionelle pour la fabrication de documents utilisant une presse de laminage chaude froide - Google Patents

Feuille métallique en relief avec une structure tridimensionelle pour la fabrication de documents utilisant une presse de laminage chaude froide Download PDF

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Publication number
EP1629994A2
EP1629994A2 EP05017575A EP05017575A EP1629994A2 EP 1629994 A2 EP1629994 A2 EP 1629994A2 EP 05017575 A EP05017575 A EP 05017575A EP 05017575 A EP05017575 A EP 05017575A EP 1629994 A2 EP1629994 A2 EP 1629994A2
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EP
European Patent Office
Prior art keywords
structures
recessed
embossing plate
produced
embossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05017575A
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German (de)
English (en)
Other versions
EP1629994A3 (fr
EP1629994B1 (fr
Inventor
Erik Mitterhofer
Maximilian Reissig
Markus Prancz
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.)
Austria Card Plastikkarten und Ausweissysteme GmbH
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Austria Card Plastikkarten und Ausweissysteme 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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Application filed by Austria Card Plastikkarten und Ausweissysteme GmbH filed Critical Austria Card Plastikkarten und Ausweissysteme GmbH
Priority to PL05017575T priority Critical patent/PL1629994T3/pl
Priority to SI200531360T priority patent/SI1629994T1/sl
Publication of EP1629994A2 publication Critical patent/EP1629994A2/fr
Publication of EP1629994A3 publication Critical patent/EP1629994A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/22—Removing surface-material, e.g. by engraving, by etching
    • B44C1/225—Removing surface-material, e.g. by engraving, by etching by engraving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/22—Removing surface-material, e.g. by engraving, by etching
    • B44C1/227—Removing surface-material, e.g. by engraving, by etching by etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/22—Removing surface-material, e.g. by engraving, by etching
    • B44C1/228—Removing surface-material, e.g. by engraving, by etching by laser radiation
    • B42D2035/26—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/70—Deforming specified alloys or uncommon metal or bimetallic work

Definitions

  • the invention relates to a embossing plate for a hot-cold laminating press with three-dimensional structure, the production of such embossing plate and the use for the production of documents, in particular security documents such as identity cards, passports, identification cards, credit cards, loyalty cards, driving licenses and the like leaf and / or card and / or book-type documents by means of thermal transfer press lamination.
  • security documents such as identity cards, passports, identification cards, credit cards, loyalty cards, driving licenses and the like leaf and / or card and / or book-type documents by means of thermal transfer press lamination.
  • the present invention enables the cost-effective production of an individual three-dimensional embossing sheet for the production of surface-embossed documents by means of lamination and / or embossing and / or piecewise embossing in a hot-cold laminating press.
  • EP 0 216 947 B1 (Maurer Electronics) and EP 0 219 012 B1 (GAO) and in the specifications EP 0 842 791 B1 (Giesecke & Devrient), EP 0 790 898 B1 (Giesecke & Devrient) and EP 0 843 281 A2 (Giesecke & Devrient) describes data carriers with an optical authenticity feature as well as methods for producing and testing the data carrier based on lenticular elements. In this case, information is introduced by means of a laser beam and a so-called wobbly image is generated, which can be visually recognized with different information under two different viewing angles.
  • the known production methods relate to the classical Transferlamination in multiple use, as well as the subsequent surface imprinting in a finished document by means of different methods.
  • GB 401,579 discloses an improved aluminum or aluminum alloy stamping plate such as gravure printing plates which is a hard, wear resistant, adherent oxide film or surface made of substantially alumina. This invention has the disadvantage that here the printing plate is claimed only as a device, but not your application or use.
  • US Pat. No. 5,106,125 A discloses an arrangement for improving the security against forgery of a document of value, wherein a film is locally connected to the surface of the document of value and the film has at least one security feature and the security feature has a microstructure for diffractive light incidence and a surface embossed in the document of value Has a security profile in the form of a macrostructure and the security feature and the Partially overlaying the security profile, the relief lines of the macrostructure of the security profile being arched away from the value document surface and having sufficiently recognizable gloss effects due to incident light, when using this arrangement one or more predetermined breaking points in the security feature are created when the security feature is removed from the value document is deformed and so deformed that the deformation is easily visible when the security feature is applied to a second document of value.
  • This invention has the disadvantage that the security profile is embossed into the surface of the value document.
  • embossing surface It requires the use of a high-gloss embossing surface and the generation of three-dimensionally shaped depressions and the generation of raised microstructures without damaging the high-gloss surface.
  • the recessed structures generated in the embossing plate will be raised in the laminated or surface-embossed document and the raised structures in the embossing plate will be recessed in the laminated or surface-embossed document.
  • the object of the present invention is the cost-effective production of a structured embossing sheet for use in a laminating press for the production of, for example, laminated cards or ID cards and similar documents.
  • the reference plane is defined as a highly polished surface, which must not be damaged by the subsequent structuring in any case.
  • a embossing plate is proposed for a hot-cold laminating press which carries a three-dimensional structure on the basis of a largely flawless, surface-hardened metal sheet of suitable thickness and dimension and a suitable surface, in particular a highly polished surface.
  • the invention provides in a first embodiment, to incorporate a recessed structure (which is preferably optically effective) in a single step in the embossing plate as a three-dimensional structure.
  • a recessed structure which is preferably optically effective
  • the methods of producing such a structure are described in detail below. Each of the methods described therein should be suitable alone or in combination with each other to produce the desired, three-dimensional, recessed structure.
  • the invention is not limited to the production of the three-dimensional recessed structure in a single process step. Two-stage and multi-stage process steps will also be described below.
  • a second method step is connected, which realizes the desired, further structuring of the already produced three-dimensional structure.
  • a two-step process can be used if, in the first method step, the recessed structures are introduced in an enlarged processing field, leaving unprocessed areas (eg the edge areas) in this enlarged processing area in which another, recessed or raised structure (eg a micro-font) is introduced.
  • unprocessed areas eg the edge areas
  • another, recessed or raised structure eg a micro-font
  • This structure is incorporated in an at least two-stage process in the highly polished surface of the embossing plate.
  • At least two-stage process means that the structure is incorporated with two different process steps. It remains unclear whether the two process steps take place consecutively or at the same time. Of course, more than two process steps can be used.
  • photomasking is applied over the entire area by means of lamination, spraying, printing, roller coating, curtain coating and the like coating methods and exposed by means of suitable exposure in the form of a mask exposure and / or laser exposure.
  • undercuts of the masking structures can be set in such a way that substantially semicircular, recessed structures can be achieved which, when used as embossing plates, produce raised lens-like structures.
  • a second photomask is applied over the entire surface and care is taken to ensure that the already produced three-dimensional depressions are well covered.
  • a second chemical or electroplating process is used and it is thus produced a raised microstructure.
  • an additive laser processing process can also be used to produce this raised structure, or a subtractive laser process can be used to produce a recessed structure.
  • a Galvanoabformblech instead of a metal sheet with a high-gloss or frosted surface already a Galvanoabformblech be used.
  • a structure in multiple use is already produced once and it will be made of it Galvanoabformungen.
  • the embossing plate produced in this way is used to produce documents, in particular security documents, such as identity cards, passports, identification cards, credit cards, customer cards, driver's licenses and similar sheet and / or card and / or book-type documents by means of lamination and / or embossing and / or piecewise embossing used in a hot-cold laminating press.
  • security documents such as identity cards, passports, identification cards, credit cards, customer cards, driver's licenses and similar sheet and / or card and / or book-type documents by means of lamination and / or embossing and / or piecewise embossing used in a hot-cold laminating press.
  • transfer press systems are used.
  • a plurality of printed, non-printed sheets positioned in a hot press at typically 200 to 300 N / cm 2 and the required laminating temperature of over 100 ° C to about 200 ° C and then in a cold press at typically 200 are usually used to 550 N / cm 2 and a cooling temperature of usually below 50 ° C, but preferably below 25 ° C laminated to each other, or interconnected.
  • press plates in a multi-daylight press known in the art, special stainless steel plates with a high-gloss or semi-matt or matt structure are usually used. Usually, these press plates are used on both sides. In addition to the multi-daylight press, rotary table presses or single press systems are often used.
  • the press plates are used with thicknesses of 0.3 to 2.0 mm, preferably thicknesses between 0.8 mm and 1.5 mm are used.
  • the format used is chosen from the single benefit to the multiple benefit of typically 20 or 24 or 48 uses for credit card sized laminate elements.
  • a typical press plate is offered for example by the company Böhler Bleche GmbH in A-8680 Mürzzu Kunststoff / Austria with the type designation A-505 in the DIN steel grade 1.4301 or AISI 302.
  • Press plates with lens structures are used to produce documents with surface lens structure elements.
  • Electroplated press plates made of galvanic nickel can be used or steel or nickel sheets with lens inserts. In all cases, care must be taken that pairs of press plates are used which have a similar thermal expansion coefficient.
  • a metal sheet having a thickness of 0.3 to 2.0 mm, preferably with a thickness between 0.8 mm and 1.5 mm understood.
  • Typical formats are chosen from the single benefit to the multiple benefit of typically 20 or 24 or 48 uses for credit card sized laminate elements.
  • a typical press plate is offered for example by the company Böhler Bleche GmbH in A-8680 Mürzzu Kunststoff / Austria with the type designation A-505 in the DIN steel grade 1.4301 or AISI 302.
  • galvanically coated steel sheets or electroplated sheets for example made of nickel, can also be used.
  • press plate pairs In all cases, press plate pairs must be used which have the highest possible thermal expansion. For long service life, large surface hardnesses are an advantage. In a preferred manner, the surface is made highly polished. For special requirements, satin or matt surfaces can also be used. Usually, press plates are used on both sides in a platen press with cassettes, wherein the first and the last press plate is used with only one side to the laminate package.
  • a document is understood to mean, in particular, security documents such as identity cards, passports, identification cards, credit cards, loyalty cards, driving licenses and similar sheet and / or card and / or book-type documents.
  • security documents such as identity cards, passports, identification cards, credit cards, loyalty cards, driving licenses and similar sheet and / or card and / or book-type documents.
  • at least the uppermost laminate layer must be thermoplastically deformable at the usual surface pressures of up to 500 N / cm 2 and often above to about 650 N / m 2 .
  • a vacuum-assisted lamination press can be advantageous. As a result, trapped air can be avoided.
  • a lens structure is a three-dimensionally shaped optically largely transparent structure understood by means of the structured Embossing plates raised and / or recessed in or on the surface of the document is arranged, or is produced.
  • lenticular lens systems are used, wherein the rows of lenses with different radii and different grid dimensions can be used. This results from a different embossing height or embossing depth over the embossing surface.
  • lens-like recesses are made in the embossing plate and thereby raised lenticular structures are produced on the document.
  • a planar elevation is first made on the embossing plate and in this elevation, the lens-like structure is made and it can thus be produced a document in which the lens-like structure below the (preferably high-gloss) surface is arranged.
  • lens-like structures In addition to line-like, lens-like structures, it is also possible to use hexagonal or triangular or pointwise arranged lens-like structures.
  • the design of the lens mold is often uncritical depending on the application and relatively large deviation from a radius can be accepted or desired.
  • the formation of the three-dimensionally shaped optical structures can also be rectangular, parabolic, elliptical, trapezoidal, V-shaped or irregularly shaped and / or formed composite.
  • Such three-dimensionally shaped optical structures are intended to influence the beam path during visual and / or machine viewing of information arranged underneath, ie in the interior of a document, such that a change in this information is given visually and / or mechanically.
  • the viewing angle changes, the information read out also changes.
  • An undercutting is understood to mean the production of a photomask in which the openings are made so small that a nearly isotropic etching takes place in the case of a corresponding etching bath guide, thereby achieving a strong undercutting.
  • a similar etch depth can be achieved laterally as in the depth, and thereby the desired lens-like depressions can be achieved.
  • the prerequisite for such an etching process is a suitable photomasking, a suitable bath management and defect-free sheets or defect-free surfaces.
  • Such an etching is sufficient as the only method step, already incorporated a three-dimensional structure deepened below the reference plane in the material of embossing plate.
  • a micro-typeface is a structure that is not readable by the naked eye.
  • the writing can be raised or recessed and may otherwise be linear or punctiform.
  • a diffractive structure is understood to mean a light- diffractive optical planar or line-shaped or graphically designed element which is embossed into the surface by the embossing plate.
  • the diffractive element is arranged somewhat recessed and is thereby protected from mechanical damage, such as scratching and scrubbing.
  • a lamination for example, the processing in a transfer press system, a rotary table press, a continuous press or a Einzelverslaminierstrom understood.
  • a plurality of printed, non-printed sheets positioned in a hot press at typically 200 to 300 N / cm 2 and the required laminating temperature of over 100 ° C to about 200 ° C and then in a cold press at typically 200 are usually used to 550 N / cm 2 and a cooling temperature of usually below 50 ° C, but preferably below 25 ° C to each other laminated or bonded together.
  • a vacuum support may be useful and thus an air inclusion can be avoided especially in uneven press layers.
  • a surface embossing and / or a piece-wise surface embossing is understood to mean the introduction of a surface structure onto a largely finished document. Since we assume at least one thermoplastic upper layer, the embossing plate must heated accordingly with a suitable surface pressure on the document surface are pressed and then the embossing plate must be cooled under pressure. This process leads to relatively long process times. An ultrasound application and / or a micro-oscillation can often give sufficiently good embossing results with substantially shorter cycle times.
  • FIG. 1 shows a schematic representation of a cross-section of a stamping sheet (1) with a recessed lens structure (3), raised structures 1 and 2 (4, 5) and a diffractive structure (35).
  • the embossing plate (2) can be made of steel, preferably stainless steel, and must have a largely defect-free and void-free surface area. However, it is also possible to use a correspondingly less rust-resistant steel with a galvanic surface layer, for example based on nickel. Or it can be a galvanotechnisch produced sheet, for example made of nickel, can be used.
  • such galvanically produced layers or sheets provide a good defect-free material composition, which allows the incorporation of the finest and spatially designed structures (3, 7, 8, 9) and also a good connection to chemically or galvanotechnically applied elements (4, 5).
  • an exemplary embossing plate (1) is shown with a recessed and lenticular structure (3, 7, 8, 9), said recessed structure (3, 7, 8, 9) on the top of the document (26) raised and projecting structure (30, 32) - see Figures 10 to 13 - causes.
  • typical radii (8) will be 70 to 150 microns, especially in the range 90 microns and a typical depth (9) 50 to 120 microns, especially in the range 70 microns and as a grid (7) 100 to 300 .mu.m, in particular 170 microns specified.
  • the raised structures (4, 5) are additive structures on the surface of the embossing plate (2) and, for example, two different heights were shown.
  • the width and height (10, 11) can be selected within wide ranges.
  • the structures (4, 5) can be carried out in a point-like, linear or planar manner.
  • the first structuring process step is a photomasking of the embossing plate surface (6). Subsequently, an exposure process is performed with a mask or a direct exposure method. Depending on the photomask type, the photomask is then removed at the exposed or unexposed areas with appropriate stripping liquids.
  • an etching solution then etches a semicircular (3) or groove-shaped (13) or V-shaped (15) or U-shaped depression by means of a corresponding etching control.
  • a larger area (22) can be made deepened without undercutting.
  • the first patterning process step can also be done by electroplating and either recessed or raised structures are made heightwise on either side of and beyond a reference surface (6).
  • Such Galvanoabformungen are usually carried out on the basis of nickel and then it must be made in the present case, the thickness of the Galvanoabformung for suitability as a press plate in a heating-cold laminating press.
  • the second patterning process step can now be realized photochemically or photogalvanisch and / or laser technology.
  • the structured surface obtained by the first structuring process is provided with a photomask, exposed, developed and stripped, and thus a second structure or even further structures can be produced by etching and / or electroplating.
  • the difficulty with this is that the structures produced in the first patterning process must be well covered or protected, which can be done by lamination of a photosensitive film. Most such lamination is accomplished by vacuum lamination and / or wet lamination. However, it is also possible to carry out a curtain casting process or a spray coating process.
  • the at least second structuring process can also be carried out by laser technology.
  • depressions can be realized by laser ablation and elevations by melting of corresponding surface-applied materials.
  • both fine guilloche-like structures and microstructures can be produced.
  • the shape of the depression can be controlled stepwise or spirally by appropriate pulse control.
  • the laser-building structuring can also be done by overlay or lamination or spray application or printing application of suitable materials.
  • the laser beam is guided over the surface with corresponding power and pulse duration or number of pulses and suitable focus in accordance with the desired graphic design. Subsequently, the unused material is removed.
  • the diffractive structure (35) is carried out in this embodiment almost flush with the embossing plate surface (6) and is produced by means of micro-precision etching and / or ablative laser.
  • the embossing plate surface (6) is executed in the preferred variant of high gloss and is not affected by the various photomasking or Strukturherstellreae.
  • FIG. 2 shows a schematic representation of a cross-section of a embossing plate (1) with a recessed groove-shaped structure (13), a V-shaped one Recess (15), shown with raised structures 1 and 2 in a recess (16) and with raised structures (4, 5, 17).
  • the raised structure in the recess (16) is achieved by a multi-stage manufacturing process.
  • the cavity must be produced in a first photomasking process and a first material removal process and subsequently the two raised structures (16) must be realized in an additive process.
  • FIG. 3 shows a schematic representation of a cross-section of a embossing plate (1) with a photomasking (18) for the production of lens-like undercuts (19, 20, 21).
  • the photomask (18) plays a very important role, since it must remain stable over the duration of the entire chemical or electroplating process and must adhere well to the surface of the embossing plate (2). Then it has to be easy to remove (strippable).
  • the vertical etching without undercut (22) shows that erosion without undercutting is also possible with suitable bath management. In principle, ablation with and without undercut is realized in separate processes.
  • FIG. 4 shows a schematic representation of a cross-section of a embossing plate (1) with a second photomask (23) for producing a second surface structuring (24). Based on this figure, the problem of masking in an already structured surface will be shown.
  • polyester protective films are additionally used which often make embedding the recessed structures without air pockets impossible.
  • wet lamination systems and Vakuumlaminiersysteme but such systems and Processes consuming and expensive.
  • spray painting or knife coating or screen printing or curtain coating or roller coating are simpler and more efficient methods of confirming coating.
  • the openings (24) for the second surface structuring are produced in any desired manner.
  • FIG. 5 shows a schematic illustration of a cross section of a embossing plate (1) with a photomasking (18) for producing a surface structure (25).
  • This step for producing a structuring on a embossing plate (2) serves to expose a planar structure (25) for a galvanic deposition (26).
  • FIG. 6 shows a schematic illustration of a cross-section of a embossing plate (1) with a photomasking (18) for producing a galvanic deposition (26).
  • This Galvanoabscheidung (26) must adhere well to the surface of the embossing plate (2), must be as free of defects as possible and should have a similar thermal expansion coefficient as the embossing plate (2).
  • the preferred electrodeposition material used is nickel, which on the one hand has sufficient surface hardness and on the other hand has good resistance to a lamination or embossing process.
  • FIG. 7 shows a schematic representation of a cross-section of a embossing plate (1) with a second photomask (23) for producing a recessed lens structure with undercut (27).
  • the masking openings (24) must be matched very precisely to the desired undercut (27).
  • FIG. 8 shows a schematic representation of a cross-section of a embossing plate (1) with a galvanic deposit (26) with a recessed lens structure with undercut (27).
  • a lens structure (27) makes it possible to produce a recessed lens structure (32) on a document (28).
  • FIG. 9 shows a schematic illustration of a cross-section of a embossing plate (1) with a galvanic deposition (26) and a diffractive structure (35) produced thereon.
  • a diffractive structure (35) produced in this way makes it possible to produce a recessed diffractive structure (35) on a document (28).
  • FIG. 10 shows an exemplary representation of a document (28) with a lettering (29, 34), wherein the lettering "Austria Card” is produced by means of a embossing plate which, for example by means of photomasking with a subsequent chemically or electro-ablative process recessed structures forms, or in a subsequent second process step after a second exposure and exposure with a subsequent chemical or galvanic process forms a raised microstructure.
  • the lenticular element (30, 32) shown here likewise has raised and / or recessed structures which are produced on the embossing plate by means of lenticular recesses or by means of a lenticular structure on a surface elevation on the embossing plate, the rows of lenses having different radii and different grid dimensions are formed, which result from a different embossing height or embossing depth.
  • a diffractive element (35) is designed as a light diffraction optical, flat or linear or graphic element, which is preferably arranged somewhat recessed, in order to protect it from mechanical damage and a horizontal, vertical or arcuate structure having.
  • An element having a diffractive structure may be formed by an element having a lenticular structure.
  • the illustrated micro-writing element (31, 33) has a structure which is not legible with the naked eye and is also designed to be raised and / or recessed, wherein the structure is linear and / or point-shaped.
  • the raised structures are generally referenced to the reference plane (36) which forms the surface of the document without the indentations and indentations created.
  • the document (28) is usually produced by means of a prior art transfer press system.
  • FIG. 11 shows a schematic representation of a cross-section AB through the exemplary document (28) with the likewise recessed structures (29, 31, 35) and raised structures (30).
  • This illustration clearly shows that the lenticular element (30, 32) is in the form of a raised structure and the microprint (31) is in the form of a recessed structure.
  • FIG. 12 shows a schematic illustration of a cross-section AB through the exemplary document (28) with recessed structures (29, 31, 35, 30), wherein the aforementioned structures (31, 29, 32,) in this illustrated embodiment of a document (FIG. 28) are formed as wells and the micro-writing structure (33) in addition also as Erhabept.
  • FIG. 13 shows a schematic representation of a cross-section AB through the exemplary document (28) with recessed structures (32, 35) and raised structures (33, 34), wherein the determination of the Recessed or raised structures partially represents an inverse form to the figures 10 to 12 and is determined according to the use of the document (28), wherein the micro-font (31, 33) within a document (28) can have both raised and recessed structures.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
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  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Laminated Bodies (AREA)
  • Credit Cards Or The Like (AREA)
EP05017575A 2004-08-27 2005-08-12 Procédé de fabrication d'une feuille métallique en relief avec une structure tridimensionelle pour la fabrication de documents utilisant une presse de laminage chaude froide Active EP1629994B1 (fr)

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PL05017575T PL1629994T3 (pl) 2004-08-27 2005-08-12 Sposób wytwarzania blachy do wyciskania o strukturze trójwymiarowej do wytwarzania dokumentów przy użyciu prasy do laminowania na gorąco i zimno
SI200531360T SI1629994T1 (sl) 2004-08-27 2005-08-12 Postopek izdelave reliefne pločevine s tridimenzionalno strukturo za izdelavo dokumentov s pomočjo vroče-hladne laminirne stiskalnice

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WO2010000497A1 (fr) 2008-07-03 2010-01-07 Bundesdruckerei Gmbh Procédé et dispositif d'insertion d'un signe de sécurité dans un document de valeur ou de sécurité
WO2010000499A2 (fr) * 2008-07-03 2010-01-07 Bundesdruckerei Gmbh Composite de couches polymères pour un document de sécurité et/ou de valeur, procédé et dispositif de fabrication de ce composite
EP2289708A1 (fr) * 2009-08-26 2011-03-02 Indaffil Holding AG Procédé de fabrication d'une structure de surface d'une tôle de presse métallique, d'une bande sans fin ou d'un rouleau de gaufrage
WO2012078221A1 (fr) * 2010-12-07 2012-06-14 Travel Tags, Inc. Feuille de lentilles ayant un groupement de lentilles formé dans des zones présélectionnées et articles formés à partir de celle-ci
EP2000325A3 (fr) * 2007-06-08 2012-08-22 Tefco Aomori Co., Ltd. Motif métallique minuscule et son procédé de fabrication
EP2848424A1 (fr) * 2013-09-13 2015-03-18 Hueck Rheinische GmbH Procédé de fabrication d'une structure de surface sur un outil de presse par l'application de revêtements métalliques
EP3029659A4 (fr) * 2014-10-10 2016-10-05 Grapac Japan Co Inc Afficheur à réseau partiel d'éléments optiques, procédé de formation de réseau partiel d'éléments optiques et système de production d'afficheur
WO2017041896A3 (fr) * 2015-09-11 2017-08-24 Giesecke & Devrient Gmbh Dispositifs et procédé pour produire un élément de sécurité comportant une structure optiquement variable
EP3296121A1 (fr) * 2016-09-19 2018-03-21 Kocher + Beck GmbH & Co. Rotationsstanztechnik KG Tôle gaufrée pour poser un dispositif de sécurité haptique, procédé de fabrication et d'utilisation d'une tôle gaufrée

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US8444092B2 (en) * 2008-08-05 2013-05-21 Alcoa Inc. Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same
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JP6853960B2 (ja) * 2018-09-14 2021-04-07 大日本印刷株式会社 情報記録媒体の製造に用いられる原版、及び、情報記録媒体の製造方法
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WO2008014952A3 (fr) * 2006-08-03 2008-06-19 Giesecke & Devrient Gmbh Élément de sécurité à motif imprimé par héliogravure
WO2008014952A2 (fr) * 2006-08-03 2008-02-07 Giesecke & Devrient Gmbh Élément de sécurité à motif imprimé par héliogravure
EP2000325A3 (fr) * 2007-06-08 2012-08-22 Tefco Aomori Co., Ltd. Motif métallique minuscule et son procédé de fabrication
WO2010000497A1 (fr) 2008-07-03 2010-01-07 Bundesdruckerei Gmbh Procédé et dispositif d'insertion d'un signe de sécurité dans un document de valeur ou de sécurité
WO2010000499A2 (fr) * 2008-07-03 2010-01-07 Bundesdruckerei Gmbh Composite de couches polymères pour un document de sécurité et/ou de valeur, procédé et dispositif de fabrication de ce composite
WO2010000499A3 (fr) * 2008-07-03 2010-04-29 Bundesdruckerei Gmbh Composite de couches polymères pour un document de sécurité et/ou de valeur, procédé et dispositif de fabrication de ce composite
EP2289708A1 (fr) * 2009-08-26 2011-03-02 Indaffil Holding AG Procédé de fabrication d'une structure de surface d'une tôle de presse métallique, d'une bande sans fin ou d'un rouleau de gaufrage
US8693101B2 (en) 2010-12-07 2014-04-08 Travel Tags, Inc. Lens sheet having lens array formed in pre-selected areas and articles formed therefrom
WO2012078221A1 (fr) * 2010-12-07 2012-06-14 Travel Tags, Inc. Feuille de lentilles ayant un groupement de lentilles formé dans des zones présélectionnées et articles formés à partir de celle-ci
EP2848424A1 (fr) * 2013-09-13 2015-03-18 Hueck Rheinische GmbH Procédé de fabrication d'une structure de surface sur un outil de presse par l'application de revêtements métalliques
WO2015036070A1 (fr) * 2013-09-13 2015-03-19 Hueck Rheinische Gmbh Procédé de fabrication d'une structure de surface sur un outil de pressage par application de couches métalliques
CN105579245A (zh) * 2013-09-13 2016-05-11 许克莱茵有限公司 在冲压工具上通过加设金属层制造表面结构的方法
CN105579245B (zh) * 2013-09-13 2018-02-23 许克莱茵有限公司 在冲压工具上通过加设金属层制造表面结构的方法
RU2659953C2 (ru) * 2013-09-13 2018-07-04 Хуек Райнише Гмбх Способ изготовления поверхностной структуры на прессовом штампе посредством нанесения металлических слоев
EP3029659A4 (fr) * 2014-10-10 2016-10-05 Grapac Japan Co Inc Afficheur à réseau partiel d'éléments optiques, procédé de formation de réseau partiel d'éléments optiques et système de production d'afficheur
WO2017041896A3 (fr) * 2015-09-11 2017-08-24 Giesecke & Devrient Gmbh Dispositifs et procédé pour produire un élément de sécurité comportant une structure optiquement variable
EP3513972A1 (fr) * 2015-09-11 2019-07-24 Giesecke+Devrient Currency Technology GmbH Plaque d'estampage flexible pour une presse à feuilles de l'impression de sécurité
EP3296121A1 (fr) * 2016-09-19 2018-03-21 Kocher + Beck GmbH & Co. Rotationsstanztechnik KG Tôle gaufrée pour poser un dispositif de sécurité haptique, procédé de fabrication et d'utilisation d'une tôle gaufrée

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US7757538B2 (en) 2010-07-20
EP1629994A3 (fr) 2008-07-23
DE102004041434B4 (de) 2013-10-10
ES2367897T3 (es) 2011-11-10
ATE512002T1 (de) 2011-06-15
PL1629994T3 (pl) 2012-01-31
EP1629994B1 (fr) 2011-06-08
US20060191861A1 (en) 2006-08-31
DE102004041434A1 (de) 2006-03-16
SI1629994T1 (sl) 2011-11-30

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