Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
  • B32B37/0038—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving application of liquid to the layers prior to lamination, e.g. wet laminating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/45—Associating two or more layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B38/00—Ancillary operations in connection with laminating processes
  • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M1/00—Inking and printing with a printer's forme
  • B41M1/24—Inking and printing with a printer's forme combined with embossing
• • 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
  • B42D25/29—Securities; Bank notes
• • 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
• • 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
• • 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
  • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
  • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
  • B44C1/17—Dry transfer
  • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
  • B44C1/1729—Hot stamping techniques
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44F—SPECIAL DESIGNS OR PICTURES
  • B44F1/00—Designs or pictures characterised by special or unusual light effects
  • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
  • G03H1/0236—Form or shape of the hologram when not registered to the substrate, e.g. trimming the hologram to alphanumerical shape
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
  • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
  • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
  • G07D7/12—Visible light, infrared or ultraviolet radiation
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07F—COIN-FREED OR LIKE APPARATUS
  • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
  • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
  • G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2425/00—Cards, e.g. identity cards, credit cards
• • B42D2033/04—
• • B42D2033/10—
• • B42D2033/16—
• • B42D2033/18—
• • B42D2033/20—
• • B42D2033/24—
• • B42D2035/24—
• • 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
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
  • G03H1/024—Hologram nature or properties
  • G03H1/0244—Surface relief holograms
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
  • G03H1/04—Processes or apparatus for producing holograms
  • G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
  • G03H2001/187—Trimming process, i.e. macroscopically patterning the hologram
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H2250/00—Laminate comprising a hologram layer
  • G03H2250/12—Special arrangement of layers
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H2250/00—Laminate comprising a hologram layer
  • G03H2250/36—Conform enhancement layer
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
  • G03H2250/00—Laminate comprising a hologram layer
  • G03H2250/42—Reflective layer
• • 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
  • Y10T428/14—Layer or component removable to expose adhesive
  • Y10T428/1476—Release layer
• • 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
  • Y10T428/14—Layer or component removable to expose adhesive
  • Y10T428/1486—Ornamental, decorative, pattern, or indicia
• • 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.]
  • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
• • 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.]
  • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
  • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
• • 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.]
  • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
  • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
  • Y10T428/24545—Containing metal or metal compound
• • 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.]
  • Y10T428/24628—Nonplanar uniform thickness material
• • 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.]
  • Y10T428/24851—Intermediate layer is discontinuous or differential
• • 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.]
  • Y10T428/24851—Intermediate layer is discontinuous or differential
  • Y10T428/24868—Translucent outer layer
• • 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.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
• • 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.]
  • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

• the invention relates to a decorative layer structure which has at least one transparent topcoat layer, which is provided with a diffraction-optically effective spatial structure on its surface concealed during use, and at least in the region of the spatial structure has a reflective layer.
• a decorative layer structure which has at least one transparent topcoat layer, which is provided with a diffraction-optically effective spatial structure on its surface concealed during use, and at least in the region of the spatial structure has a reflective layer.
• it deals with the use of such a decorative layer structure.
• Decorative layer structures or arrangements of the type mentioned above are used to a very large extent, for example, as security elements for documents of value such as banknotes, credit cards, ID cards or tickets.
• the term "diffraction-optically effective, spatial structure" is to be understood here as structures which result in very special effects by diffraction or refraction of the incident light.
• Such diffraction-optical structures can, for example, holograms, computer-generated Diffraction structures, interference layers or diffraction gratings.
• the lacquer layers delimiting the diffraction-optically effective structure on both sides are provided over the entire surface of the known layer composite.
• DE-OS 23 52 366 discloses an identification card which is partially provided with a diffractive-optical spatial structure.
• two layers with essentially the same refractive index enclose a material layer in regions
• Refractive index differs from that of the two enclosing layers.
• the diffractive-optical spatial structure is provided in one layer only in the area in which the material with different refractive index is present.
• stamps are usually used to produce decorative layer structures with such diffractive structures that occupy only a limited area.
• other security elements for example a special print
• the invention is based on the object to remedy this situation and to propose a possibility which makes it possible to provide structures of the type described which are diffraction-optically effective in a decorative layer structure, but nevertheless very precisely additional safety elements, for example a particular pressure, at relatively high production speeds. to be able to attach or at least to be able to carry out a very precise positioning of the structures which are effective in terms of diffraction optics and are only present in certain areas.
• a further decorative lacquer layer the thickness of which is at least that, is provided between the surface of the top coat layer that has the diffraction-optically effective spatial structure and the reflective layer Depth corresponds to the spatial structure and is formed by a lacquer whose basic composition has a refractive index that differs from that of the transparent topcoat by less than 0.8.
• the diffraction-optically effective spatial structure is rather introduced into the top coat layer over a surface area which is larger than the area in which a spatial structure is to be present. Nevertheless, the viewer of the decorative layer structure receives the impression that the spatial structure would only be present in the desired area, specifically because the recesses or elevations of the spatial structure outside the
• the area in which the structure is desired can be leveled by means of the decorative lacquer layer, the reflective layer then - viewed from the viewer side - on the one hand behind the decorative lacquer layer filling the spatial structure and on the other hand in the areas in which no additional decorative lacquer layer is present is behind the spatial structure.
• the precise positioning of the spatial structure is therefore not carried out by correspondingly precise ones
• the additional decorative lacquer layer can, for example, in one
• a procedure according to the invention thus considerably simplifies the production of a decorative layer structure with only spatial diffraction-effective spatial structure, in the simplest case the production can be carried out in such a way that the entire surface of the top coat layer to be provided with the spatial structure is provided with a spatial, optically diffractive structure is provided, which can be produced very easily, for example by means of appropriately profiled rollers.
• a corresponding decorative lacquer layer is then applied to fill out the spatial structure in some areas, whereby due to the small difference in the refractive index between the transparent top coat and the basic substance of the decorative lacquer layer, the interface between the top lacquer layer and the decorative lacquer layer is normally not visible.
• “basic composition” or “basic substance” of the decorative lacquer layer means the lacquer base without pigments and fillers.
• the decorative lacquer layer - like the top lacquer layer - will be formed by a transparent lacquer, whereby these transparent lacquers can of course be colored, for example to give the impression of gold when using a reflective layer made of aluminum.
• a decorative lacquer layer which is formed by a pigmented lacquer.
• the pigments in the decorative lacquer layer if the basic composition has a corresponding refractive index, the structured interface is achieved is not visible between the top coat and decorative coat.
• additional, special effects can be achieved, for example, when using a pigmented decorative lacquer layer, because then the reflective layer is then not visible on the side of the decorative lacquer layer facing away from the viewer in the state of use.
• a metal layer evaporated in a vacuum for example an aluminum or chrome layer, is used as the reflecting layer.
• a dielectric with a refractive index of at least 2 is used as the reflecting layer.
• the decorative layer structure according to the invention can be used for a wide variety of applications.
• a particularly favorable use is the embossing film, in particular hot stamping film, which consists of a carrier film and a transfer layer which can be fixed to a substrate by means of an adhesive layer, in particular hot stamping film, in which case the top coat layer forms the protective coating layer forming the free surface of the decorated substrate serves.
• the individual layers of such a hot stamping foil can be constructed in the usual way, for example the combinations with magnetic layers, etc., which are known per se, are also possible.
• the decorative lacquer layer can be formed by a magnetizable lacquer, with the additional advantage that the magnetic layer is not separated from the top lacquer layer by the metallization, with the result that both the magnetization of the magnetic layer and the information stored in the magnetic layer can be read out more easily.
• Decorative layer structure according to the invention having hot stamping foil with reference to the drawing, in which a section of a corresponding hot stamping foil is shown in section and in a highly schematic manner, the thickness ratios of the exemplary embodiment shown not being particularly representative.
• the hot stamping foil u shown in the drawing comprises a carrier film 1 in a manner known per se. consisting of wax, release layer 2 arranged a total of 3 designated transfer layer.
• the transfer layer 3 comprises a transparent top coat layer 4, which is provided with a spatial structure 5 at least in regions on its surface facing away from the carrier film 1.
• the spatial structure 5 is designed and has dimensions such that it can develop optical diffraction effects, for example as a result of diffraction,
• the spatial structure 5 can be a hologram or a computer-generated diffraction structure, but also e.g. be a diffraction grating.
• the spatial structure 5 is generally embossed into the top coat layer 4 applied to the carrier film 1, for this purpose either a thermoplastic lacquer or a crosslinked lacquer for the top coat layer 4 is used, which is not yet fully cured at the time the structure 5 is impressed.
• the decorative lacquer layer 6 must therefore have a thickness which corresponds at least to the maximum depth d of the spatial structure 5.
• a reflective metal layer 7 is applied to the surface of the top coat layer 4 facing away from the carrier film 1, which is partly formed by the spatial structure 5 but partly also by the decorative lacquer layer 6, e.g. evaporated in vacuo.
• An adhesion promoter layer 8 then adjoins the metal layer 7, which brings about a secure adhesion of an adhesive layer 9.
• the adhesive layer 9 serves to fix the transfer layer 3 on a substrate, the carrier film 1 being removed in a manner known per se after the transfer layer 3 has been applied to the substrate. This is easily possible with hot stamping foils because the release layer 2 becomes soft when exposed to the appropriate heat.
• the adhesive layer 9 is usually a heat-activatable layer, which likewise only becomes sticky during the transfer process due to the heat used here.
• the top coat layer 4 is a transparent lacquer layer, so that the spatial structure 5 after application of the transfer layer 3 by means of the adhesive layer 9 on Substrate through the top coat layer 4 is visible.
• the top coat layer can be colored to achieve special optical effects.
• the decorative lacquer layer 6 is adapted to the top lacquer layer 4 at least with regard to its basic substance.
• the application of the decorative lacquer layer 6 is intended to ensure that the interface between the top lacquer layer 4 and the decorative lacquer layer 6, which has the spatial pattern 5, is not or hardly visible from the side of the carrier film 1 through the top lacquer layer 4. This is ensured if the refractive indices of the top coat layer 4 and the decorative lacquer layer 6 differ by less than 0.8.
• the basic substance of the decorative lacquer layer 6 essentially corresponds to the top lacquer layer 4 with regard to the refractive index.
• the decorative lacquer layer 6 can also be pigmented, which makes it possible to design the regions carrying the decorative lacquer layer 6 differently in color from the regions of the decorative layer structure or the transfer layer 3 which only have the spatial structure 5, so that the regions covered by the decorative lacquer 6 are clearly visible.
• the carrier film 1 is, for example, a polyester film with a thickness of 19 to 23 ⁇ m, to which the top coat layer 4 and the decorative lacquer layer 6 are then applied by means of gravure rollers. Between the application of the top coat layer 4 and the decorative lacquer layer 6, the surface of the top coat layer 4 pointing away from the carrier film 1 is patterned, for example by means of appropriately patterned rollers for attaching the spatial structure 5.
• the top coat layer 4 normally has a thickness of 0.3 to 1.2 ⁇ m and can be composed as follows:
• the decorative lacquer layer can be composed as follows:
• the metal layer 7 evaporated in a vacuum can consist, for example, of aluminum, chromium, copper, tin, silver or gold or alloys thereof. It usually has a thickness of 0.01 to 0.04 ⁇ m.
• dielectrics with a refractive index of at least 2 instead of the metal layer, however, it would also be conceivable to use dielectrics with a refractive index of at least 2 as the reflecting layer.
• Chemical elements such as Ge, In or
• Oxides such as SiO, Ta 2 0 5 , Ti0 2 , Ti 0 3 , Ce0, Hf0 2 , Si0 or
• Salts e.g. MgF, ZnS.
• the adhesion promoter layer 8 usually has a thickness of 0.2 to 0.7 ⁇ m, and if the thickness of the adhesion promoter layer 8 is not sufficiently large, an interface profile with the adhesive layer 9 results similar to the illustration in the drawing.
• the adhesion promoter layer 8 can be composed as follows, for example:
• the adhesive of the layer 9 is applied, for example, in a thickness that corresponds approximately to the thickness of the top coat layer 4.
• the adhesive layer 9 can be, for example, a hot-melt adhesive layer known per se.
• this layer of adhesive it is not always necessary to apply this layer of adhesive. This depends on the composition of the substrate on which the stamping foil is to be stamped. If, for example, the substrate is made of PVC, as is often the case with credit cards, a special layer of hot glue can usually be dispensed with. A sufficiently thick adhesion promoter layer 8 with appropriate adhesive properties must then be used.
• the layer structure is not necessarily provided in accordance with the exemplary embodiment. It would be conceivable, for example, to assemble the decorative lacquer layer 6 in the form of a specific pattern from differently colored lacquers or one as the decorative lacquer layer 6
• Magnetic paint layer to be provided. Especially when using magnetic pigments, the application of additional layers, at least in certain areas, may also prove to be necessary.

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• Credit Cards Or The Like (AREA)

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• 1993
  • 1993-04-24 DE DE4313521A patent/DE4313521C1/de not_active Revoked
  • 1993-06-09 TW TW082104573A patent/TW283124B/zh not_active IP Right Cessation
• 1994
  • 1994-02-08 US US08/535,082 patent/US5714231A/en not_active Expired - Fee Related
  • 1994-02-08 WO PCT/DE1994/000137 patent/WO1994025288A1/de active Application Filing
  • 1994-02-08 JP JP52372394A patent/JP3828144B2/ja not_active Expired - Fee Related

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