Security document and procedure for its production

Abstract

A security document comprising a front cover (2) having at least one layer (5, 6, 7) and a back cover (3) having at least one layer (8, 9, 10), wherein the front cover (2) and the back cover (3) are connected to each other, characterized in that at least one layer (6, 9) of the front cover (2) and / or the back cover (3) consists of a glass film, and wherein at least one further layer (5, 7; 8, 10) of the front cover (2) and / or the back cover (3) consists of a material different from the layer (6, 9) made of glass film, and wherein the at least one layer (6, 9) made of glass film and the at least one layer (5, 7; 8, 10) of the front cover (2) and / or back cover (3) that differs from it are bonded or laminated together to form a composite body (4), characterized in that the at least one Layer (6, 9) of glass film has at least one predetermined breaking point introduced.

Description

The invention relates to a security document comprising a front-side booklet having at least one layer and a back-side booklet having at least one layer, and a method for producing such a security document. German patent DE 10 2012 215 742 A1 discloses a security and / or valuable document comprising a front cover and a back cover. The front cover has a thin glass film as its outer surface. The back cover is constructed similarly. Between these two layers is a personalization layer with an opaque, flexible layer acting as an adhesive, bonded to the outer thin glass films. The thin glass films on the respective outer sides of the front and back covers are designed as overlay films. Furthermore, EP 0 972 632 A1 discloses a safety card which comprises a composite body consisting of a flexible glass layer and a support layer. The thickness of the glass layer on one outer surface is less than 350 µm. Furthermore, DE 199 63 165 C1 discloses a security document comprising a card-shaped data carrier with a display device. This display device includes a functional layer in the form of an electronically controllable display based on liquid crystals, light-emitting diodes, or light-emitting organic polymers. This functional layer is embedded in thin glass layers for protection. This arrangement allows the display device to make certain information visible to the user from the outside. German patent DE 10 2013 103 353 A1 discloses a security document in the form of a data page for a book-like document. The front cover is bound to the back cover. A flap is inserted between the front and back covers to form the data page. The data page is bound into a book block by means of the flap, which is then enclosed by the book cover to form the book-like document, in particular a valuable and / or security document. The front cover and / or back cover consists of at least one layer of plastic, in particular polycarbonate. Additionally and / or alternatively, the front cover and / or back cover can also include a printed layer, such as a writable plastic layer, a paper layer, or cardboard.A leveling layer made of a plastic layer with a glass transition temperature lower than that of the adjacent layers or printed layers of the front or back cover is preferably provided between the front and back covers. This allows for improved adhesion between the individual layers to form a composite body. Furthermore, EP 1 502 765 A1 discloses a data page for a book-like security document. This document provides for a flexible layer between a front cover and a back cover. This flexible layer can be made of a textile. To create a composite body from these layers, the flexible layer has perforations in a specific area, allowing the front and back covers to extend through these perforations during lamination and be welded, glued, or laminated together. The invention is based on the objective of proposing a security document that makes manipulation more difficult. Furthermore, the invention is based on the objective of proposing a method for producing such a security document, which enables increased security against manipulation in a simple manner. This task is accomplished by a security document in which at least one layer of the front and / or back cover consists of a glass film, and this layer is bonded or laminated to at least one further layer of the front and / or back cover, made of a material other than the glass film, to form a composite body. This glass film layer in the security document has the advantage of preventing manipulation, for example, by machining individual layers. Such a glass film is brittle, so at least this layer of the composite body cannot be removed by machining. Rather, an attempt at manipulation would lead to the glass layer shattering and being destroyed. This would make the manipulation immediately detectable. At least one layer of the glass film has at least one predetermined breaking point. This means that manipulation of an adjacent layer directly connected to the glass film layer would result in the destruction of the glass film, thus making the manipulation obvious. Preferably, the glass film layer is designed as a thin glass layer. This layer preferably has a thickness of less than 300 µm, and in particular a thickness of less than 100 µm. Thus, this glass film layer can have thicknesses analogous to the other layers for the front and / or back covers of the security document and can be used in the same way. To increase security against tampering, the glass film may be designed to have perforations. When forming a composite body with at least one additional layer that differs from the glass film layer, this additional layer can at least partially flow into the perforations, thereby creating improved anchoring between the at least two layers. Furthermore, the glass film layer can have a coating on one or both sides. This coating can be dielectric or metallic. It can be applied, for example, by vapor deposition. This coating can also cover part or all of the glass film's surface. This allows for the integration of a security element through the partial or complete coating itself. Moreover, such a coating can be further specified and / or personalized by exposure, particularly using a laser beam. Preferably, at least one security element introduced by exposure is provided in the glass film layer and / or in the coating on the glass film layer. For example, irradiation or exposure using a laser or other radiation source can be carried out to introduce a marking, personalization, or other features to form the security element. Furthermore, diffractive structures can be created in the glass layer that are easy to verify but cannot be copied by surface-altering methods in the event of a tampering attempt. Furthermore, it is preferably provided that at least one security feature is incorporated into the glass film layer and / or the coating on the glass film layer, as well as into the at least one further layer connected to the glass film, wherein parts of the security feature are incorporated into the glass film layer and / or the coating on the glass film layer, and parts of the same security feature are incorporated into the at least one further layer connected to the glass film layer. This also allows for the simple detection of tampering attempts by removing individual layers, since the parts of the security features incorporated into the glass film layer and into the further layer connected to it form a uniform security element when viewed from the security document, and any tampering would result in visible breaks, interruptions, or the like. Another advantageous design of the security document provides that the layer of glass film extends at least partially or completely to an end edge of the composite body. This makes the glass film visible from the outside and allows it to be illuminated from the outside for security testing and to be checked for completeness. Advantageously, the layer in the front cover and / or in the back cover and / or in a compensating layer provided between the front cover and the back cover may have at least one active or passive transponder with a light source that couples light into the layer made of glass film. This allows for a further security check to be performed by examining the front edge of the composite body, up to which the layer made of glass film extends, when the light is activated. Another preferred embodiment of the security document provides that the glass foil layer serves as a core layer or a compensating layer between the front and back covers. Such a design allows the core layer or compensating layer to have a greater thickness. Furthermore, the glass film layer can be designed to form an outer surface of the front and / or back cover of the composite body. This prevents manipulation by removing layers, starting from an outer layer. If the outer surface of the front cover and / or back cover is formed with the layer of glass film, a transparent or tinted and transparent protective film may preferably be applied. This ensures scratch resistance. Furthermore, the glass film layer can be designed to be transparent or translucent. Positioning this layer close to the outer surface of the front and / or back cover can create an additional security feature. According to another alternative embodiment of the security document, at least one layer of the glass film is recessed inwards relative to at least one end edge of the composite body, and the resulting space is filled by at least one layer made of a different material. This makes the structure of the security document invisible from the outside. Another preferred embodiment of the invention provides that the layer of glass film is chemically prestressed on one or both sides. This allows for a change in the planar orientation of the composite body during a manipulation attempt by removing individual layers, which serves as an indicator of counterfeiting. The layer that differs from the layer made of the glass film consists, for example, of one or more plastics, in particular polycarbonate (PC), especially bisphenol-A polycarbonate, carboxy-modified PC, polyethylene terephthalate (PET), its derivatives such as glycol-modified PET (PETG), carboxy-modified PET, polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethyl methacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile butadiene styrene copolymer (ABS) and / or their derivatives, or of paper and / or cardboard or of a mixture of the aforementioned materials. The problem underlying the invention is further solved by a method for producing a security document, in particular according to one of the embodiments described above in accordance with the features of claim 16. Preferably, the glass film can have at least one roughened surface that improves the bond with at least one further layer made of a material different from the glass film. Preferably, at least one layer of the glass film is provided as a strip material, in particular as a glass roll, and is fed together with at least one other layer to a lamination device. This allows a web-like composite body to be produced in a continuous process, thereby increasing productivity. Furthermore, it is preferably provided that the composite body exiting the lamination device is cut into individual panels. Depending on the desired formats and sizes, the cutting pattern for the individual panels can be designed. Preferably, the security element according to one of the embodiments described above can be intended for multiple uses, such as a data page for a book-like value and / or security document, as a passport, as an ID document, in particular in an ID-1 or ID-3 format, as a check card, visa card, driver's license, access control card, visa, gift or shopping card or as other proof of authorization. The invention, as well as further advantageous embodiments and developments thereof, are described and explained in more detail below with reference to the examples shown in the drawings. The features shown in the description and drawings can be applied individually or in any combination according to the invention. The figures show: Fig. 1 a perspective view of a first embodiment of a security document, Fig. 2 a perspective view of an alternative embodiment of the security document compared to Fig. 1, Fig. 3 a perspective view of a layer or a compensating layer of the security document according to Fig. 1 or Fig. 2, Fig. 4 a perspective view of a book-like document with a security document as a data page, Fig. 5 a schematic top view of the data page according to Fig. 4, Fig. 6 a schematic side view of the data page according to Fig. 5, and Fig. 7 a schematic side view of an alternative embodiment of the data page compared to Fig. 6. Figure 1 shows a perspective view of a first embodiment of a security document 1. This security document 1, for example, has an ID-1 format. Such ID-1 formats are used for credit cards, Visa cards, phone cards, driver's licenses, health insurance cards, and / or other authorization cards. Alternatively, the security document 1 can have an ID-3 format or other formats. The security document 1 comprises a front cover 2 and a back cover 3, which are joined together to form a composite body 4. This can be done by gluing or laminating. The front cover 2 has at least one layer 5, 6, 7, and the back cover 3 has at least one layer 8, 9, 10. In the exemplary embodiment, a symmetrical number of layers is advantageously provided for the front cover 2 and the back cover 3. For example, the front cover 2 has an outer protective layer 7.This outer protective layer 7 is bonded to a layer 6 made of a glass film. The further layer 5 advantageously consists of a material different from the glass film layer 6, such as plastic, paper, cardboard, or a mixture of several of the aforementioned materials. The back cover 3 can have an analogous structure in this embodiment. A protective layer 10 is provided on a lower outer surface. Layer 9 is formed from a glass film, and layer 8 consists of a material different from the glass film layer, such as plastic, paper, cardboard, or a mixture of several of the aforementioned materials. The individual layers of the front side binding 2 and back side binding 3 can have a thickness between 25 and 300 µm, especially between 50 and 100 µm. With a reduced number of layers in the security document 1, the front page 2 can consist of only one layer (5, 6, 7) and the back page 3 of only one layer (8, 9, 10). The structure and arrangement of the layers can be adapted to the specific application and are described above only as examples. Layer 6, 9 consists of a glass foil. This glass foil can be made of glass such as borosilicate and / or aluminum borosilicate. Preferably, this layer 6, 9 is designed as a so-called thin glass layer. Thin glasses are defined as glasses with a thickness of less than approximately 300 µm, which, due to their small thickness, can be bent similarly to glass fibers and even wound into a glass roll. Such thin glasses can be bonded to other layers made of different materials, such as plastics, paper, and / or cardboard, to form a composite body. These glass foils have a glass transition temperature (Tg) of approximately 500 °C to 750 °C. While this glass foil is flexible, it is brittle. At least one further layer 5, 7 of the front-side booklet 2 and / or at least one further layer 8, 10 of the back-side booklet 3 can be made of one or more plastics (polymers). The outer layers 7, 10 can be, in particular, protective layers or so-called overlay films. These are, for example, transparent and preferably colorless and exhibit high abrasion resistance. Security document 1 features personalization data 22 on one outer surface. Additionally, an image 19 or further symbols, emblems, or the like may be included. A security document 1 may also include an ICAO zone 21. This image 19, the ICAO zone 21, and / or the personalization data 22 can be incorporated into the front cover 2. Alternatively, they can be placed on the back cover 3, or on both the front and back covers 2 and 3, or partially on the front cover 2 and partially on the back cover 3. Depending on the number and selection of layers, these elements can be incorporated in various ways. In the example structure, the data and information can be contained in layer 6 (made of glass film), layer 5 (made of a different material), or both layers (fully or partially).In this embodiment, layer 7 can be designed as an overlay film or protective film. Partial or complete information can also be incorporated into this layer 7. The same applies to the back cover 3. In the security document 1 according to Fig. 1, it is provided by way of example that the layers of the front cover 2 and back cover 3 extend over the entire format of the composite body 4. This forms a circumferential end edge 35, with each layer extending to the end edge 35. The at least one layer 6, 9, which is designed as a glass film, can be visible from the outside and / or backlit. This forms an additional security element. Figure 2 shows an alternative embodiment of the security document 1 compared to Figure 1. This embodiment differs from the security document 1 in Figure 1 in that it has an asymmetrical structure with a different number of layers. A core layer or compensating layer 28 is provided between the front-side booklet 2 and the back-side booklet 3. In the embodiment shown in Figure 2, for example, the front-side booklet 2 is provided with layer 6 made of glass foil and layer 7 as a protective layer. The back-side booklet 3 has an analogous structure and is formed from layer 9 made of glass foil and protective layer 10. Alternatively, the number of layers for the front-side booklet 2 and the back-side booklet 3 can differ. The structure and sequence of the layers of the front-side booklet 2 and the back-side booklet 3 can also differ. It is preferred, irrespective of the modified and previously described embodiments of the security document 1 according to Fig. 1 and Fig. 2, that at least one layer 6, 9 made of the glass film is provided in the security document 1. Figure 3 shows a schematic view of a core layer or compensating layer 28 of the security document 1 in Figure 2. This compensating layer 28 or security layer can consist of one or more layers and has a recess 29. An IC chip 25 of a transponder module 24, for example, can be positioned in this recess. An antenna 26 of the transponder module 24 can be mounted on the compensating layer 28. This IC chip 25 can have a light source 27. If the compensating layer 28 is formed from or includes a layer 6, 9 of glass film, light from the light source 27 can be directly coupled into it.If the core or compensating layer 28 consists of several layers, such as a layer 5, 8 made of plastic, which is bonded on one or both sides to a layer 6, 9 of the glass film, light can also be coupled in on one or both sides through the light source 27. If the layer 6, 9 of the glass film extends to at least one end edge 35 of the security document 1, this light source 27 can form an additional security feature, since the coupled light exits at the end edge 35 and is visible from the outside. In the event of tampering, the glass film can break due to its brittleness, thereby impairing the light exit to at least one end edge 35. Figure 4 shows a perspective view of a book-like document 11. This book-like document 11 is, for example, an identification document such as a passport. The document 11 includes, for example, a book cover 12. An endpaper 14 may be provided on an inner side of the book cover 12 and is attached to the book cover 12. A data page 17 and one or more inner pages 18 are joined together by a seam 16 to form a book block 15. The data page 17 may constitute the security document. If a book cover 12 and, in particular, the endpaper 14 are provided, this endpaper 14, or this endpaper 14 together with the book cover 12, can also be attached to the book block 15 by the seam 16. The inner pages 18 of the book-like document 11 can, for example, serve to hold visas, stamps, or other entries. The data page 17 consists of a data carrier 20 and a flap 23 attached to it. The data page 17, in particular the data carrier 20, can, for example, be designed according to the ICAO standard, in particular according to ICAO Doc 9303, 7th edition, and include an image 19 of the document holder, an OCR-readable ICAO zone 21 (also called a "machine-readable zone" or MRZ), and further personalization data 22. The personalization data 22 is provided within the data carrier 20. The tab 23 of the data carrier 20 extends across the seam 16.This flap 23 also includes a seam area in which the seam 16 is formed. Additionally or alternatively, an adhesive and / or welded connection can be provided in addition to the seam 16 to bind the flap 23 into the book-like document 11, in particular the book block 15. Figure 5 schematically shows a top view of the data side 17. The data carrier 20 can, for example, comprise a transponder module 24, which includes an IC chip 25 and an antenna 26. Furthermore, or alternatively, other electronic and / or other security elements, in particular diffractive security elements, can be integrated and / or applied. The tab 23 is connected to the data carrier 20 by forming an overlap area 30. The tab 23 comprises a woven tape material, which is preferably connected to an outermost layer or layer of the data carrier 20 by welding. In particular, the tab 23 can consist of the woven tape material, preferably a PET fabric. Regarding the connection of the tab 23 to the woven tape material for the tab 23 and to the data carrier 20, as well as the structure of the data carrier 20, reference is made in full to DE 10 2012 213 913 A1. The data page 17 can correspond in structure to one of the previously described embodiments of the security document 1 according to Fig. 1 or Fig. 2. Figure 6 shows a schematic diagram of the individual layers of the data page 17 with the tab 23. In this embodiment, the tab 23 is inserted, for example, between the front-side binding 2 and the back-side binding 3. The compensating or core layer 28 is, for example, recessed so that the tab 23 can be inserted into the resulting space. Alternatively, it can also be provided that the flap 23 is bound between two layers of the front cover booklet 2 or between two layers of the back cover booklet 3. Figure 7 shows an alternative embodiment to Figure 6. For example, the data carrier 20 consists of a front-side binding 2, which comprises a layer 6 of the glass film and a protective layer 7. The back-side binding 3 consists, for example, of only one layer, which, unlike layer 9, may consist of the glass film or a protective layer 10. The protective layer 7 on the front-side binding 2 can be recessed so that the tab 23 rests directly on and is connected to the layer 6 of the glass film. Advantageously, the tab 23 is flush with the protective layer 7. Advantageously, these two layers form a common plane with respect to their sides.1 Security document 2 Front cover 3 Back cover 4 Composite body 5 Plastic layer 6 Glass film layer 7 Protective layer 8 Plastic layer 9 Glass film layer 10 Protective layer 11 Book-like document 12 Book cover 14 Endpaper 15 Book block 16 Seam 17 Data page 18 Inside 19 Image 20 Data carrier 21 ICAO zone 22 Personalization data 23 Tab 24 Transponder module 25 IC chip 26 Antenna 27 Illumination source 28 Compensation layer 29 Recess 30 Overlap area 31 Protruding area 35 Front edge.

Claims

A security document comprising a front cover (2) having at least one layer (5, 6, 7) and a back cover (3) having at least one layer (8, 9, 10), wherein the front cover (2) and the back cover (3) are connected to each other, characterized in that: - at least one layer (6, 9) of the front cover (2) and / or the back cover (3) consists of a glass film; - at least one further layer (5, 7; 8, 10) of the front cover (2) and / or the back cover (3) consists of a material different from the layer (6, 9) made of glass film; and wherein the at least one layer (6, 9) made of glass film and the at least one layer (5, 7; 8, 10) of the front cover (2) and / or back cover (3) that differs from it are bonded or laminated together to form a composite body (4); characterized in that the at least one layer (6, 9) of glass film has at least one predetermined breaking point. Security document according to claim 1, characterized in that the layer (6, 9) of the glass film is formed as a thin glass layer with a thickness of less than 300 µm, in particular with a thickness of less than 100 µm. Security document according to one of the preceding claims, characterized in that the layer (6, 9) of glass film is at least partially or completely coated on one side with a dielectric or metallic coating. Security document according to claim 3, characterized in that the at least one layer (6, 9) of glass film and / or the coating on the layer (6, 9) of glass film has at least one security element introduced by exposure. Security document according to claim 3 or 4, characterized in that at least one security feature is incorporated into the layer (6, 9) of glass film and / or the coating applied to the layer (6, 9) of glass film, as well as into the at least one further layer (5, 7; 8, 10) connected with the glass film, wherein parts of the security feature are incorporated into the layer (6, 9) of glass film and / or into the coating on the layer (6, 9) of glass film, and parts of the security feature are incorporated into the at least one further layer (5, 7; 8, 10). Security document according to one of the preceding claims, characterized in that the layer (6, 9) of the glass film extends at least partially or completely to at least one end edge (35) of the composite body (4). Security document according to one of the preceding claims, characterized in that at least one active or passive transponder module (24) with a light source (27) is provided in the front cover (2) and / or the back cover (3) and / or in a compensating layer (28) provided between the front cover (2) and the back cover (3), which couples a light into the layer (6, 9) of the glass film. Security document according to one of the preceding claims, characterized in that the layer (6, 9) made of glass film is provided as a core layer or compensating layer (28) between the front page booklet (2) and back page booklet (3). Security document according to one of claims 1 to 7, characterized in that the layer (6, 9) of the glass film forms an outer surface of the front page booklet (2) and / or an outer surface of the back page booklet (3) of the composite body (4). Security document according to claim 9, characterized in that the outside of the front cover booklet (2) and / or the back cover booklet (3) is provided with a protective film (7, 10), in particular a transparent protective film. Security document according to one of the preceding claims, characterized in that the layer (6, 9) made of the glass film is transparent or translucent. Security document according to one of claims 1 to 5, characterized in that the at least one layer (6, 9) of the glass film is set back inwards from at least one end edge (35) of the composite body (4) and this free space is filled by the at least one layer (6, 9) with a different material or a tab (23) for connecting a data page (17) into a book block (15) for a book-like document (11). Security document according to one of the preceding claims, characterized in that the layer (6, 9) of glass film has one or more perforations. Security document according to one of the preceding claims, characterized in that the layer (6, 9) of the glass film is chemically prestressed at least on one or both sides and / or has a roughened surface. Security document according to one of the preceding claims, characterized in that the at least one layer differing from the layer (6, 9) made of the glass film consists of one or more plastics, in particular polycarbonate (PC), especially bisphenol-A polycarbonate, carboxy-modified PC, polyethylene terephthalate (PET), its derivatives such as glycol-modified PET (PETG), carboxy-modified PET, polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethyl methacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile butadiene styrene copolymer (ABS) and / or their derivatives, or paper and / or cardboard or a mixture of the aforementioned materials. Method for producing a security document, in particular according to one of claims 1 to 15, - in which a front-side booklet (2) is provided, comprising at least one layer (5, 6, 7), - in which a back-side booklet (3) is provided, comprising at least one layer (8, 9, 10), - in which the front-side booklet (2) and the back-side booklet (3) are joined together to form a stack and connected to each other, - in which at least one layer (6, 9) of a glass film is provided for the front-side booklet (2) and / or for the back-side booklet (3), - in which at least one further layer (5, 7; 8, 10) of a material other than the glass film is provided, and - in which the at least one layer (6, 9) of the glass film and the at least one further layer (5, 7;8, 10) are bonded or laminated to form a composite body (4), characterized in that at least one predetermined breaking point is introduced into the at least one layer (6, 9) of glass film.; Method according to claim 16, characterized in that the at least one layer (6, 9) of the glass film is provided as ribbon material, in particular as a glass roll, and is supplied together with the at least one further layer (5, 7; 8, 10) to a lamination device. Method according to claim 17, characterized in that the composite body (4) brought out of the lamination device is cut into individual panels. Use of the security document (1) according to any one of claims 1 to 15 as a data page (17) for a book-like value and / or security document (11), a passport, an ID document, in particular in ID-1 or ID-3 format, a cheque card, a visa card, a national identity card, a driver's license, an access control card, a visa, a driving licence, a gift or shopping card or other credentials.

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