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
  • B42D25/45—Associating two or more layers
  • B42D25/465—Associating two or more layers using chemicals or adhesives
  • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
• • 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
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
• • 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
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
  • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
• • 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
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
  • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
• • 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
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
  • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
• • 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
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
  • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
  • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
  • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
  • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
• • 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
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
• • 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
  • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
  • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
• • 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
• • 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
  • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
  • B32B37/025—Transfer laminating
• • 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
  • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
  • B32B37/1284—Application of adhesive
  • B32B37/1292—Application of adhesive selectively, e.g. in stripes, in patterns
• • 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
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/06—Interconnection of layers permitting easy separation
• • 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
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• • 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
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
  • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
• • 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
  • B42D25/364—Liquid crystals
• • 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
  • 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
• • 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
  • B44C1/162—Decalcomanias with a transfer layer comprising indicia with definite outlines such as letters and with means facilitating the desired fitting to the permanent base
• • 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
  • B44C1/1733—Decalcomanias applied under pressure only, e.g. provided with a pressure sensitive adhesive
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
  • B44C3/005—Removing selectively parts of at least the upper layer of a multi-layer article
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
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  • B32B2250/00—Layers arrangement
  • B32B2250/02—2 layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
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• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2255/00—Coating on the layer surface
  • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
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• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2305/00—Condition, form or state of the layers or laminate
  • B32B2305/34—Inserts
  • B32B2305/347—Security elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
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• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2307/40—Properties of the layers or laminate having particular optical properties
  • B32B2307/402—Coloured
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• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2307/748—Releasability
• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
  • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
  • B32B2310/0831—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using UV radiation
• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2425/00—Cards, e.g. identity cards, credit cards
• • B—PERFORMING OPERATIONS; TRANSPORTING
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• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2457/00—Electrical equipment
• • 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
  • B32B38/06—Embossing
• • 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
  • B41M3/12—Transfer pictures or the like, e.g. decalcomanias
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
  • B44C3/02—Superimposing layers

Definitions

• the invention relates to a method and an apparatus for producing a multilayer film and to a multilayer film obtainable in this way.
• Multilayer films are widely used in the so-called “dry coating” or coating, in particular decoration of objects, in the production of security elements, etc. They are mostly used in the form of transfer films having a carrier layer and a transfer layer decorating object while the carrier layer is peeled off and discarded.
• a frequently used decorative element in such films are partially metallized layers in which the metallization forms an optical design, an electrical function or the like.
• Various methods are known for producing such partially metallized layers.
• One production possibility lies in the printing of a transfer film with a water-soluble lacquer, in particular with a high pigment content for increased porosity, a full-surface vapor deposition with a thin one
• a partial metallization can also be done by means of UV exposure and photoresist.
• a photoresist is printed over the entire surface of the metal layer and exposed using a mask.
• the mask may be present separately or be part of the layer structure of the transfer film.
• the resist is then removed in the exposed or unexposed areas and serves as an etch resist in the other areas as described above.
• Partial metallization register-containing decorative layers must be applied.
• a combination of a register-containing partial metallization in the etching process with further decorative lacquer layers is without the o.g. Insetting not feasible at all. If this possibility is given, the partial metallization for practical reasons usually lies before all other decorative layers.
• Register accuracy is a positional accuracy of two or more elements and / or layers to understand each other. It should be the
• Registration marks or register marks can either represent special separate elements or regions or layers or themselves be part of the elements or regions or layers to be positioned.
• a "perfect register” is when the register tolerance is close to zero or practically zero.
• economically viable partial metallizations in the decorative area by means of etching processes can not be realized with all metals. For example, chromium is hardly suitable for such processes. The often desired combination of a partial metallization with a
• the object of the present invention is to provide a method and a device which enable the simplified and improved production of an improved multilayer film. This object is achieved by a method according to claim 1, a device according to claim 40 and a multilayer film according to claim 47.
• Such a method for producing a multilayer film comprises the steps:
• Transfer layer comprising at least one layer; b) applying a particular UV-curable adhesive to at least a first portion of the transfer layer of the base body, wherein no adhesive is applied in at least a second portion of the transfer layer; c) applying a stamping foil, which comprises a carrier ply and a transfer ply, such that the transfer ply of the stamping foil in the at least one first partial area comes into contact with the adhesive applied to the transfer ply of the main body;
• an apparatus for producing a multilayer film comprising:
• a printing device for applying a free-radically curable adhesive on at least a portion of a base body
• a UV light source arranged in the conveying direction of the films downstream of the roller arrangement for curing the adhesive by UV irradiation
• Transfer layer wherein the transfer layer comprises a decorative layer, in which at least one partial adhesive layer and a further partial layer is provided, which is arranged in register with the partial adhesive layer.
• a multilayer film is particularly suitable for use as Hot stamping foil, cold stamping foil, laminating foil, in-mold decoration foil,
• Thermoforming film or the like is thermoforming film or the like.
• the method uses an embossing transfer film for
• the transfer layer of the stamping foil may in particular comprise a metallized layer.
• the generated metallized region may be positioned at any position (vertically in the layer structure and horizontally in the design) in the layer structure of the multilayer film.
• the generated metallic region may be a closed metallic surface, but also a surface not covered by metal
• the metallic region can also be a metal grid with regularly or irregularly very finely distributed raster elements,
• the embossing foil can be applied inline, that is to say within a printing line, and in register with other decorative layers.
• a device is conceivable from a machine standpoint which is designed as a mobile module which can be used at any position of a multi-color printing press as required. It is also it is possible to use a plurality of such mobile modules simultaneously at different positions or even several such mobile modules at the same position adjacent to one another on a multi-color printing press.
• the transfer layer of the embossing foil in particular a partial metallization, can be placed anywhere in the decorative structure. There are even several independent partially metallized areas in a multilayer film conceivable, for example, may be colored differently. Alternatively or additionally, it is conceivable that one or more such mobile modules offline, ie during or during the application of
• Multilayer film can be used on any substrate. This means that the embossing film is applied to a multi-layer film to be applied, in particular immediately before its application. This can be done
• the base body and embossing foil are brought together and thus combined.
• This offers the advantage that the multi-layer film to be applied can be easily adapted to the wishes of the customers in terms of design and design.
• the customer no longer has to use a special, completely produced multi-layer film for the different uses, which means that he has to store a huge number of finished multi-layer films.
• the customer may instead apply shortly before the application of the multilayer film to a substrate on the film to be applied or on the body one or more stamping foils, according to his wishes and needs.
• the one or more mobile modules may be formed as a separate device or devices that are flexible in the processing path of the multilayer film, for example immediately before and / or after
• Embossing station for application of the multilayer film can be arranged on a substrate.
• the one or more mobile modules can also be designed as switchable integrated modules of the embossing station for the multilayer film.
• the one or more mobile modules can apply the embossing film to the multilayer film or to the base body or alternatively or additionally to the embossing film on the substrate.
• the application of the embossing film to the substrate can be carried out before and / or after the application of the multilayer film or the base body to the substrate.
• the main body can be designed such that it also uses as a functional transfer film without the applied embossing foil, i. could be applied to a substrate.
• the embossing foil can now be additionally applied to a substrate before application to supplement the already existing layers of the base body accordingly.
• the embossing film can also after application to a substrate on the exposed upper side of the body, in particular on the exposed protective layer of the body, are applied to supplement the already existing layers of the body accordingly. It is also conceivable in principle for a plurality of stamping foils to be applied.
• the stamping foils preferably differ in their design
• stamping foils can be inline and / or offline on the
• Base body or to be applied multi-layer film are applied. It is also conceivable that the stamping foils are applied to a substrate and / or applied to a substrate before application.
• the basic body can have, for example, full-surface or partial transparent and / or translucent layers and / or opaque layers, in particular in motif or pattern form.
• the embossing foil can supplement these layers, for example by applying color layers and / or metal layers, in particular with register accuracy or not with register accuracy, to the already existing layers.
• These layers supplemented by the embossing film can, for example, represent an individualization in the form of a coding and / or a motif and / or a pattern on the base body or on the finished multilayer film, or else merely represent a flexibly usable component of the decoration of the multilayer film.
• the basic body can have, for example, a basic component of a decoration in motif form and / or pattern form, which is supplemented or completed by a flexible component of the decoration in motif form and / or pattern form.
• the base body may not have any decor, wherein the decor is applied only through the layers of the stamping foil.
• the main body can have, for example, only one or more protective layers to which the layers of the stamping foil are applied.
• These layers supplemented by the embossing film can, for example, represent a flexibly usable functionality of the multilayer film on the multilayer film. This means that the basic body one
• Basic component of a function for example, has an electrical or electronic function, which is supplemented or completed by a flexible part of the functionality.
• the main body may not have any function, the function is provided only by the layers of the stamping foil. Examples are antennas,
• Display devices or displays components of lighting elements, printed conductors and similar electrical functional elements.
• a partial metallization can be colored as desired without a supernatant of the transparent lacquer layer is visible. Besides, they are
• holographic effects can be integrated.
• the front and back of the metallization can also be colored differently.
• Changing the stamping foil can be changed.
• a base body and an embossing foil are used, which are formed such that a detaching force between the carrier layer of the embossing foil and the transfer layer of the embossing foil is less than one Peeling force between the carrier layer of the body and the transfer layer of the body. This allows the detachment of the carrier layer of the stamping foil together with the non-bonded areas of the transfer layer of the stamping foil without damaging the transferred layers or the layers of the main body.
• the detachment force between the carrier layer of the stamping foil and the transfer layer of the stamping foil is smaller by at least 15%, preferably by at least 30% smaller than the detachment force between the carrier layer of the main body and the transfer layer of the main body.
• the detachment forces were determined by means of a tensile test machine (Zwick Z005 from Zwick GmbH & Co. KG, Ulm). For this purpose, the stamping foil or the base body was glued flat on the lower bracket. The layer to be removed was then peeled off at right angles by the tensile test. About the load cell, the detachment forces were determined.
• the adhesive is applied by screen printing or flexographic printing. However, it is particularly preferred if the adhesive is applied by ink jet printing.
• the structure of the transferred regions of the transfer layer of the embossing film is generated digitally in the preferred case of ink jet printing when applying the adhesive, so that the corresponding effects on a single image plane
• any changes in the shape of the metallized area are possible.
• an ink jet print head with a resolution of 300 to 1200 application nozzles per inch (npi) is used to apply the adhesive.
• npi application nozzles per inch
• the resolution of the print head corresponds to the achieved resolution of the adhesive drops on the transfer layer in dpi (dots per inch, dots per inch).
• Ink jet print head with a nozzle diameter of 15 ⁇ to 25 ⁇ with a tolerance of not more than ⁇ 5 ⁇ and / or a nozzle pitch of 50 ⁇ to 150 ⁇ with a tolerance of not more than ⁇ 5 ⁇ is used. Due to the small nozzle spacing - in particular transversely to the printing direction - it is ensured that the transferred drops of adhesive on the transfer layer are sufficiently close to each other or overlap, so that good adhesion is achieved over the entire printed surface.
• the adhesive with a basis weight of 0.5 g / m 2 to 20 g / m 2 and / or a layer thickness of 0.5 ⁇ to 20 ⁇ , preferably from 1 ⁇ to 15 ⁇ on the at least one Subarea is applied. Within this range, which guarantees good adhesion, the
• Order quantity or layer thickness of the adhesive depending on the base body used, in particular of its absorbency, can be varied in order to further optimize the application result.
• Adhesive drops are provided with a frequency of 6 kHz to 1 10 kHz. At conventional conveying speeds of the film to be printed by 10 m / min. up to 30 m / min. Thus, the desired resolution of 360 dpi to 1200 dpi can be achieved in the conveying direction.
• the ink jet printhead provides adhesive drops having a volume of 2 pl to 50 pl with a tolerance of not more than ⁇ 6%.
• the required amount of adhesive is evenly applied to the transfer layer at the described job resolutions and job speeds.
• Printhead to the transfer layer minimized so that the adhesive drops land in the desired defined arrangement on the transfer layer.
• the adhesive is applied to the transfer layer with an application temperature of 40 ° C. to 45 ° C. and / or a viscosity of 5 mPas to 20 mPas, preferably from 7 mPas to 15 mPas.
• a distance between the inkjet printhead and the base body during application of the adhesive does not exceed 1 mm. This also reduces the influence of drafts on drafts.
• Ink jet print head and base body when applying the adhesive 10 m / min to 30 m / min.
• the desired resolution of the adhesive printed on the transfer layer is achieved.
• Such a formulation guarantees the desired properties, in particular the rapid curing and a viscosity which enables good printability with at the same time stable and sharp application. It is expedient if an adhesive having a density of 1 g / ml to 1, 5 g / ml, preferably from 1, 0 g / ml to 1, 1 g / ml is used.
• the adhesive in the form of visually perceptible information, in particular in the form of a
• Customization feature is applied.
• security elements can be provided with serial numbers, information about the object to be protected, owner information or the like.
• the adhesive in a predetermined relative positional relationship, i. in particular in the register to another optically perceptible information that is formed by the transfer layer of the body is applied.
• the designs formed by the transferred regions of the transfer layer of the embossing foil can thus be accurate in register even in the transfer position of the
• Basic body present designs are applied. Either the designs of the main body itself can be used to control the
• register accurate adhesive application are used, or special register marks or registration marks are applied to the body. It is expedient if a position of the other optical
• Adhesive application is controlled in dependence on the detected position.
• Base body are compensated, so that there is always a register-containing order. Furthermore, it is preferred if the adhesive is precured before applying the stamping foil.
• Pre-curing of the adhesive further improves the job quality.
• this increases the viscosity of the adhesive before the transfer layer of the stamping foil in the roller assembly is pressed onto the base body.
• This avoids bleeding or excessive squeezing of the applied adhesive pixels during the transfer, so that a particularly sharp application of the transfer layer of the embossing foil to the base body and a particularly high surface quality of the transferred layers is achieved.
• a slight squeezing of the adhesive pixels is quite desirable in order to approach and join directly adjacent adhesive pixels.
• This can be advantageous in order to avoid pixelation of the representation, for example in the case of closed surfaces and / or on motif edges, ie to avoid that individual pixels appear disturbingly optically in appearance. The squeezing must only take place so far that the desired resolution is not reduced too much.
• the precure of the adhesive is 0.02 seconds to 0.025 seconds after the adhesive is applied.
• the adhesive is fixed very quickly after printing by the pre-curing on the transfer layer of the base body, so that bleeding or spreading of the adhesive drops is largely avoided and the high printing resolution remains as well as possible.
• the precuring of the adhesive takes place with UV light whose energy is radiated to at least 90% in the wavelength range between 380 nm and 420 nm. At these wavelengths becomes
• the precuring of the adhesive has a gross irradiance of 2 W / cm 2 to 5 W / cm 2 and / or a net irradiance of 0.7 W / cm 2 to 2 W / cm 2 and / or or an energy input into the adhesive of 8 mJ / cm 2 to 1 12 mJ / cm 2 takes place. This ensures that the adhesive undergoes the desired increase in viscosity, but not fully cured, so that when applying the transfer layer of the embossing film on the body, the necessary adhesion of the adhesive is maintained.
• Pre-curing of the adhesive preferably takes place with an exposure time of 0.02 s to 0.056 s. At the mentioned transport speeds of the body and the specified irradiances so the necessary energy input for the pre-curing is ensured.
• the viscosity of the precure of the adhesive increases to 50 mPas to 200 mPas. By such Viscosity increase is guaranteed that the adhesive drops are not squeezed when applying the transfer layer to the base body, so that the transfer position of the stamping foil substantially with the printing of the
• Adhesive achieved dissolution can be transferred to the base body.
• the application of the transfer layer of the embossing film on the provided with adhesive portion of the body is preferably carried out between a press roll and a counter-pressure roller. As a result, over the entire width of the body constant line pressure and thus a uniform and high-quality application of the transfer layer is achieved.
• Main body with a contact pressure of 10 N to 80 N takes place.
• the contact pressure can be varied in order to adapt the process to the substrate quality and damage or
• the application of the embossing film to the base body is carried out 0.2 s to 1.7 s after the precuring of the adhesive. During this period, the precure reaction can proceed without excessive curing of the adhesive, which could affect adhesion.
• the curing of the adhesive 0.2 s to 1.7 s is preferably carried out after the application of the transfer layer of the embossing foil to the base body.
• the curing of the adhesive takes place with UV light whose energy is radiated to at least 90% in the wavelength range between 380 nm and 420 nm. At these wavelengths becomes
• the curing of the adhesive has a gross irradiance of 12 W / cm 2 to 20 W / cm 2 and / or a net irradiance of 4.8 W / cm 2 to 8 W / cm 2 and / or an energy input into the adhesive of 200 mJ / cm 2 to 900 mJ / cm 2 , preferably from 200 mJ / cm 2 to 400 mJ / cm 2 takes place.
• a reliable curing of the adhesive is achieved, so that after the curing step, the carrier layer of the embossing film can be removed without the applied transfer layer is damaged.
• the detachment of the carrier layer takes place from 0.2 s to 1.7 s after the curing of the adhesive.
• a base body and / or an embossing film is used, which is a carrier layer of polyester, polyolefin, polyvinyl, polyimide, ABS, PET, PC, PP, PE, PVC or PS with a layer thickness of 3 ⁇ to 100 ⁇ , preferably 7 ⁇ to 23 ⁇ has.
• the carrier layer protects and stabilizes the transfer layer during the production, storage and processing of the films. If, when pre-curing the adhesive from the side of the carrier layer to be exposed with UV light, so the choice of materials according to the appropriate
• the carrier layer of a release layer of acrylate copolymer, in particular of an aqueous polyurethane copolymer, and preferably free of wax and / or free of silicone, with a layer thickness of 0 , 01 ⁇ to 2 ⁇ , preferably from 0.1 ⁇ to 0.5 ⁇ which is arranged on a surface of the carrier layer.
• the release layer allows a simple and damage-free detachment of the carrier layer from the transfer layer after its application to the substrate.
• a base body and / or an embossing foil is used whose transfer layer comprises a lacquer layer of nitrocellulose,
• Polyacrylate and polyurethane copolymer having a layer thickness of 0.1 ⁇ to 5 ⁇ , preferably from 1 ⁇ to 2 ⁇ having.
• the lacquer layer can be transparent, translucent or transparent colored, or opaque colored.
• the lacquer layer preferably comprises at least one colorant, in particular colored or achromatic pigments and / or effect pigments,
• Thin film systems Thin film systems, cholesteric liquid crystals, dyes and / or metallic or non-metallic nanoparticles. It is further preferred if a base body and / or a stamping foil is used whose transfer layer has at least one replication layer,
• a surface relief is incorporated, which is an optically variable element, in particular a hologram, Kinegram® or Trustseal®, a preferably linear or crossed sinusoidal diffraction grating, a linear or crossed one or multistage
• Rectangular grating a zero-order diffraction structure, an asymmetric relief structure, a blaze grating, a preferably isotropic or anisotropic matt structure, or a light-diffractive and / or refractive and / or light-focusing micro or nanostructure, a binary or continuous Fresnel lenses, a binary or continuous Fresnel freeform surface, a microprism structure or a combination structure formed therefrom.
• a base body and / or a stamping foil is preferably used whose transfer layer comprises a metal layer of aluminum and / or chromium and / or silver and / or gold and / or copper with a layer thickness of 10 nm to 200 nm, preferably of 10 nm to 50 nm.
• HRI high refractive index
• Materials include metal oxides such as ZnS, TiO x or coatings with corresponding nanoparticles. Both the lacquer layer and the metal layer produce the desired decorative effect of the transfer layer after its transfer to the
• the transfer layer of which is a primer layer of polyacrylates and / or vinyl acetate copolymers with a layer thickness of 0.1 ⁇ m to 1.5 ⁇ m, preferably of 0.5 ⁇ m to 0.8 ⁇ m ⁇ has.
• Primer layer can be present in their physical and chemical
• the primer layer is microporous and in particular has a surface roughness in the range of 100 nm to 180 nm, in particular in the range of 120 nm to 160 nm.
• the adhesive can partially penetrate into such a layer and is thus particularly well fixed in high resolution.
• a primer layer having a pigmentation number of 1.5 cm 3 / g to 120 cm 3 / g is used, in particular the range from 10 cm 3 / g to 20 cm 3 / g.
• the following is the composition of a primer layer for
• the pigmentation index for this adhesive layer is: "SP x f 20g x 750.
• composition of the primer layer quickly and easily to deviating other possible possible pigmentations.
• Adhesive drops adhere to the surface with a defined geometry without running.
• all of the layers mentioned can be integrated into the structure of the transfer layers of base body and stamping foil in any combination, number and order, so that a variety of designs are possible. All layers can be present partially and form, for example, or in combination with other layers motifs and designs.
• the device has a further supply roll for
• the printing device for applying a free-radically curable adhesive to at least a portion of the body is preferably arranged downstream of the further supply roll in the conveying direction of the base body.
• the device preferably has at least one means for guiding the
• the guide means ensure in particular that the main body of the printing device and / or the roller assembly in the desired orientation is supplied.
• the guide means may be arranged next to or else alternatively to the further supply roll.
• Detecting an optical feature of the body is arranged in the conveying direction of the body upstream of the printing device and is connected via a control unit for controlling the printing device to the printing device.
• the adhesive application can be precisely controlled so as to ensure a register-accurate arrangement of the transferred transfer layer of the embossing foil to existing design features of the base body.
• the roller arrangement comprises a press roller and a counterpressure roller which is adjustable relative to the press roller for setting a gap dimension of the roller arrangement.
• the gap dimension setting can be used to control how much applied adhesive dots are squeezed and thus which pixel size ultimately results.
• Detecting an optical feature of the multilayer film in the conveying direction of the base body is arranged downstream of the puller and is connected via a control unit for controlling the gap with the roller assembly.
• the second image capture device is preferably also a line scan camera. It serves the quality control. Is about the second image capture device If it has been determined that the adhesive pixels are being squeezed too little or too little, the gap dimension can be adjusted so that the desired resolution is again achieved. Furthermore, it is advantageous if the device is designed as a module which can be integrated in a printing line with at least one printing unit.
• Printing steps that can be done before or after the application of the transfer layer of the stamping foil.
• Fig. 1 is a schematic sectional view through a
• Fig. 2 is a schematic sectional view through a stamping
• Fig. 4 is a schematic representation of an embodiment of a
• Fig. 5 is a schematic representation of the dependence between
• FIG. 6 is a schematic representation of the integration of a device according to Fig. 4 in a printing line.
• FIG. 7 is a schematic representation of the integration of a device according to FIG. 4 during the application of the multilayer film to a
• Fig. 1 shows a multilayer film 1 which can be used for decorating objects, for applying security elements and the like.
• the multilayer film 1 comprises a carrier layer 11, a release layer 12, a protective lacquer layer 13, which itself may be multilayer, a decorative layer 14, which itself may be multilayer, a further lacquer layer 15 and a primer 16, which itself may be multilayer, and as an adhesive at the
• the carrier layer 1 1 is preferably made of polyester, polyolefin, polyvinyl, polyimide, ABS, PET, PC, PP, PE, PVC or PS with a layer thickness of 3 ⁇ to 100 ⁇ .
• the carrier layer 11 protects and stabilizes the further layers of the multilayer film 1 during the production, storage and processing of the film.
• the release layer 12 is preferably made of acrylate copolymer, in particular of an aqueous polyurethane copolymer, and preferably free of wax and / or free of silicone, with a layer thickness of 0.01 ⁇ to 2 ⁇ , preferably from 0.1 ⁇ to 0 , 5 ⁇ formed, and arranged on a surface of the carrier layer 1 1.
• the release layer 12 allows a simple and damage-free detachment of the carrier layer 1 1 of the other layers of the multi-layer film 1 after its application to the substrate.
• the protective lacquer layer 13 is preferably made of nitrocellulose, polyacrylate and polyurethane copolymer with a layer thickness of 0.1 ⁇ m to 5 ⁇ m, preferably from 1 ⁇ m to 2 ⁇ m, and faces away from the carrier layer 11
• Surface of the release layer 12 is arranged.
• several layers of these substance classes can be used.
• the decorative layer 14 may be constructed in multiple layers.
• the decorative layer 14 may include metal layers, high refractive index (HRI) layers, resist layers, and replication layers in any order and combination.
• HRI high refractive index
• lacquer layer of nitrocellulose, polyacrylate and polyurethane copolymer having a layer thickness of 0.1 ⁇ to 5 ⁇ , preferably from 1 ⁇ to 2 ⁇ .
• the lacquer layer can be transparent, translucent or transparent colored, or opaque colored.
• the lacquer layer preferably comprises at least one colorant, in particular colored or achromatic pigments and / or effect pigments,
• Thin film systems Thin film systems, cholesteric liquid crystals, dyes and / or metallic or non-metallic nanoparticles.
• Optionally existing replication layers consist in particular of polyacrylate, polyester acrylate, polyurethanes and their copolymers, in which a surface relief is introduced, which is an optically variable element, especially a hologram, Kinegram® or Trustseal®
• linear or crossed sinusoidal diffraction grating preferably linear or crossed sinusoidal diffraction grating, a linear or crossed single or multi-level rectangular grid, a
• Zero-order diffraction structure an asymmetric relief structure, a blazed grating, a preferably isotropic or anisotropic matt structure, or a diffractive and / or refractive and / or light-focusing micro or nanostructure, a binary or continuous Fresnel lens, a binary or continuous Fresnel freeform surface , one
• Microprism structure or a combination structure formed therefrom are examples of Microprism structure or a combination structure formed therefrom.
• Metal layers are usually produced by vapor deposition and are preferably made of aluminum and / or chromium and / or silver and / or gold and / or copper with a layer thickness of 10 nm to 200 nm, preferably from 10 nm to 50 nm Metal layer also of a paint with metallic pigments and / or other metallic particles such as Flakes are applied by printing, in particular with a layer thickness of 10 nm to 2000 nm.
• HRI high refractive index
• HRI materials are, for example, metal oxides such as ZnS, TiO x or else coatings with corresponding nanoparticles.
• Both the lacquer layer and the metal layer produce the desired decorative effect of the decorative layer 14.
• Both the lacquer layer and the metal layer produce the desired decorative effect of the decorative layer 14.
• the additional lacquer layer 15 is optional and corresponds in structure to the
• the primer layer 16 is preferably made of polyacrylates and / or vinyl acetate copolymers having a layer thickness of 0.1 ⁇ to 1, 5 ⁇ , preferably from 0.5 ⁇ to 0.8 ⁇ .
• any hot, cold or reactive adhesives can be used, which can be selected depending on the substrate to be decorated.
• several layers of these substance classes can be used.
• the release layer 12 and the protective lacquer 13 are applied to the carrier layer 11.
• one or more layers of the decorative layer 14 are applied.
• at least one layer of the decorative layer 14, preferably a partial metal layer, is applied by embossing a cold embossing film 2 and subsequently the layers following the layer structure are produced,
• FIG. 2 An embodiment of a usable for this purpose cold stamping foil 2 is shown in Fig. 2. It comprises a carrier layer 21, a release layer 22, a
• Primer layer 25 correspond in their composition of the Carrier layer 1 1, release layer 12, protective lacquer layer 13 and
• Primer layer 16 of the multilayer film 1 It should be noted, however, that the peel force of the peel layer 12 must be greater than the peel force of the peel layer 22.
• the metal layer 24 is produced by full-surface evaporation or sputtering and is preferably made of aluminum and / or chromium and / or silver and / or gold and / or copper with a layer thickness of 10 nm to 200 nm, preferably from 10 nm to 50 nm
• the metal layer can also be made of a paint with metallic pigments and / or other metallic
• Particles such as e.g. Flakes are applied by printing, in particular with a layer thickness of 10 nm to 2000 nm.
• Carrier layer 1 1, release layer 12 and protective lacquer layer 13 includes.
• One or more layers of the decorative layer 14 can also be integrated into the main body 17.
• an adhesive layer 18 is partially applied to one of the carrier layer 1 1 remote from the surface of the base body 17. This preferably forms a motif or design in which the protective coating 23, metal layer 24 and primer 25 existing transfer layer 26 of the stamping foil. 2
• the application of the adhesive layer takes place in a device 3 according to FIG. 4 by means of an inkjet printhead 31.
• the inkjet printhead 31 is preferably designed as a piezo-drop-on-demand printhead. Printhead 31 must have high physical quality, drop size, and nozzle pitch resolution.
• the nozzles can be arranged in one or more rows.
• the physical resolution should be 300 npi to 1200 npi (nozzles per inch, nozzles per inch).
• a small nozzle spacing transversely to the printing direction ensures that the printed pixels are also close to each other across the printing direction or overlap depending on the amount of adhesive.
• the npi are the dpi (dots per inch) on the printed film.
• the nozzle spacing should preferably be 50 ⁇ m to 150 ⁇ m, with a preferred nozzle diameter of 15 ⁇ m to 25 ⁇ m, each with a tolerance of ⁇ 5 ⁇ , so that constant results are produced.
• Grayscale When using grayscale technology, multiple grayscales can be created on the same pixel. Grayscale is typically created by firing several equally sized drops onto a printed pixel. Similar to the grayscale in the printing of printing inks behaves the
• the amount of adhesive must be varied depending on the absorbency of the surface of the body 17.
• the amount of adhesive on the film should preferably be 1.2 g / m 2 to 12.6 g / m 2 to complete
• the layer thicknesses of the applied adhesive then be 1, 205 ⁇ to 12.655 ⁇ .
• its surface should have a surface tension of 38 mN / m to 46 mN / m, in particular the range of 41 mN / m to 43 mN / m ensures optimum ink acceptance.
• the piezo actuator of the inkjet printhead 31 must fire the drops of adhesive at a frequency of 6 kHz to 1 10 kHz, which is for printing material speeds (ie conveying speeds of the base body 17) of 10 m / min to 30 m / min a resolution on the slide 2 generated from 360 dpi to 1200 dpi.
• the pressure within the nozzle chamber of the inkjet printhead 31 is preferably 1 bar to 1, 5 bar at the time of drop delivery and must not be exceeded in order not to damage the piezo actuator. In the remaining time prevails at the nozzle openings, a slight negative pressure of about -5 to -25 mbar to prevent unwanted leakage of ink.
• the distance of the nozzle plate of the ink jet print head 31 to the base body 17 must not exceed 1 mm in order to minimize the deflection of the fine adhesive drops by draft.
• the drop volume should preferably be 2 pl to 50 pl, the tolerance is ⁇ 6% of the drop volume.
• the drop speed in flight should preferably be 5 m / s to 10 m / s ⁇ 15%, so that all drops of adhesive on the base 17 land very close to each other. If the drop velocity of the individual drops deviates too much from one another, this becomes visible through a restless print image.
• the resulting pixel size depends on the viscosity of the adhesive.
• its viscosity should preferably be 5 mPas to 20 mPas, more preferably 10 mPas to 15 mPas.
• the ink jet printhead 31 or the adhesive supply system must be heated.
• the adhesive temperature during operation must be 40 ° C to 45 ° C.
• stamping foil 2 is provided by a supply roll 32.
• Base 17 and stamping foil 2 are guided by deflection rollers 33 so that they run parallel to each other, wherein the respective, the carrier layers 1 1, 21 facing away from each other surfaces.
• the embossing roller 34 should consist of a solid plastic or rubber with a smooth surface and preferably have a hardness of 70 ° Shore A to 90 ° Shore A.
• this material is plastic or silicone or a metal such as aluminum or steel.
• the radius of the embossing roller 34 and the counter-pressure roller 35 should be 1 cm to 3 cm.
• the line pressure exerted by the embossing roller 34 should preferably be made with a force between 10 N and 80 N, depending on
• Substrate texture can be adjusted.
• Gap between the rollers is adjustable.
• the adhesive 18 is cured by irradiation with a UV light source 36.
• the light source 366 is preferably formed as a strong LED UV lamp that provides high irradiance and provides complete radical chain reaction within the adhesive.
• the distance of the UV light source 36 to the films is 1 mm to 2 mm in order to achieve optimum through-curing, but at the same time to avoid physical contact of the UV light source 36 to the embossing film 2.
• Irradiation window of the UV light source 36 should be 20 mm to 40 mm in the machine direction.
• the gross UV irradiance should preferably be between 12 W / cm 2 to 20 W / cm 2 in order to fully cure the adhesive at speeds of 10 m / min to 30 m / min (or higher).
• the adhesive is irradiated in this method with a net UV irradiance of preferably about 4.8 W / cm 2 to 8.0 W / cm 2 .
• a net energy input (dose) with a preferred irradiation time between 0.1-12 s (at 10 m / min
• Web speed and a 20 mm irradiation window) and 0.040 s (30 m / min; 20 mm) in the adhesive from about 537 mJ / cm 2 to 896 mJ / cm 2 , which can be varied depending on the required through hardening.
• the net energy input is preferably between 200 mJ / cm 2 and 400 mJ / cm 2, depending on the web speed.
• the embossing foil 2 completely adheres to the adhesive 18 and the adhesive 18 completely on the base body 17.
• the carrier layer 21 of the embossing foil can now be removed via a take-off roller 37 and on a spool 38 wound up.
• the device 3 also has two line scan cameras 39a, 39b.
• the camera 39a is positioned at the inlet of the device and detects optical features of the main body 17, such as existing ones
• Design elements or registration marks Based on this detection of the print head 31 is driven, so that the adhesive pattern is applied in register with these features.
• the camera 39b is located at the outlet of the device 3 and detects the quality of the order of the stamping foil 2. Of particular importance is the gap between the rollers 34, 35 and thus the contact pressure. As illustrated in Figure 5, a drop of adhesive having a given diameter is applied (Figure 5A). If the gap is too large, the drop of adhesive will not be squeezed sufficiently and the resulting pixel will be too small ( Figure 5B). If the gap is too small, the drop of the adhesive will squash too much, resulting in pixels that are too large (FIG. 5D). Only with correct gap, the
• the resulting pixel size can be measured and in case of deviations from the nominal size, the gap size by adjusting the rollers 34, 35 are adjusted so that always a consistently good
• the device 3 can be integrated into a printing line 4, so that the application of the stamping foil 2 to the base body 17 can be carried out inline with further printing processes.
• the carrier layer 1 1 of the main body 17 is provided by a first coil 41 and provided in the first printing units 42, 43 with the coatings which build up the main body 17.
• the application of the stamping foil 2 takes place, so that the decorative layer 14 of the multilayer foil 1 is at least partially built up.
• Further layers can be applied to the embossed main body 17 in the downstream printing units 44, 45 so as to obtain the finished multilayer film 1, which is subsequently wound on a further spool 46.
• the device 3 can be arranged on a substrate 51 shortly before or during the application of the multilayer film 1.
• the main body 17 is preferably provided by a coil. It is also conceivable, however, that only the carrier layer of the main body is provided by the coil and between the coil and the device 3 printing units are still arranged, the carrier layer of the body with other layers, such as
• decorative layers and / or protective layers provided.
• the multilayer film 1 is a
• the multilayer film 1 is at least partially applied to a substrate 51.
• Application device 5 at least arranged yet another device for applying a further embossing foil 2.
• the multi-layer film 1 can be individually adapted to the needs of the customer.

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• 2015
  • 2015-08-05 DE DE102015112909.4A patent/DE102015112909B3/de active Active
• 2016
  • 2016-08-03 EP EP16754227.3A patent/EP3331699B1/de active Active
  • 2016-08-03 WO PCT/EP2016/068571 patent/WO2017021461A1/de not_active Ceased
  • 2016-08-03 JP JP2018506116A patent/JP6899372B2/ja active Active
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