DE102007037982A1 - Security document with watermarked structure - Google Patents

Abstract

The invention relates to a composite security document (1, 1 ', 1 ") having a watermark-type structure and to a method for producing such a composite security document, in which a plurality of layers (3-7) are provided, which are arranged one above the other in a plurality of layers (3-7) and the plurality of stacked layers (3-7) are laminated in a high-pressure high-temperature lamination process to a monolithic document body (2), wherein at least one of the plurality of layers (3-7) at least one recess (9, 17, 18 21) and the plurality of layers (3-7) are arranged such that the at least one recess (9, 17, 18-21) is closed off to a top and a bottom side (15, 16) of the superimposed layers and the volume of the recess (9, 17, 18-21) is empty and the at least one empty recess (9, 17, 18-21) is evacuated and the lamination is carried out to form a hollow-relief-like structure ktur (8, 8 ', 23-25) in the document body (2) is formed.

Description

The The invention relates to composite security documents and to methods for Production of such composite security documents, which is a document body comprise, wherein the document body of a plurality of layers manufactured monolithic laminate body is.

In Such composite security documents can be a variety be incorporated by security features, so this as Identification documents, e.g. B. identity cards, driving licenses, but also with passports, as well as further documents to the employment come where high counterfeit security value is placed.

Out The prior art is paper-based security documents in which one of the security features is a so-called Watermark is. Watermarks are made by structures, which are in a sieve, with which the pulp from the water is drawn. In places where the sieve sublime, fewer fibers accumulate than at those points where the sieve has recesses. There are more fibers collecting. At The places where there are fewer fibers is the paper more transparent than in those places where more fibers collected to have. In transmitted light, the watermark is without technical aids also good for a layman to recognize. Modern paper mills are able to patterns, characters and other graphical representations in different shades of gray. hereby is a simulation of a watermark, z. B. by an oily Substance almost impossible. Paper documents, however, have others Disadvantages with regard to their counterfeit security, so that modern security documents almost exclusively Plastic-based documents are where multiple layers in merged into a monolithic block in a lamination process become. Such a document body is also called card body As the security documents are usually across one Layering direction of the individual layers or foils, which face each other be laminated, a greater extent than along the lamination direction, so that the resulting Composite security documents have a card shape.

Out The prior art thus discloses plastic-based documents, such as for example for credit and debit cards but also as identification documents, eg. B. in identity cards and driving licenses, etc., find use. One of the most suitable manufacturing process for such plastic-based Documents is a lamination process of a layer or stack construction, in the single layered layers, for example Plastic films, heated above their glass transition temperature be and for a long time a high Pressure is applied to the monolithic layers Merge card body. For these composite security documents There are no known methods, a watermark comparable Security feature to incorporate in the cards.

Although it is known to use embossing plates which impress structures in the outer layers, for example lens structures, in order to produce an angle-dependent representation, as described, for example, in US Pat DE 199 49 945 or the DE 100 36 505 are described. A disadvantage of these embossments, however, is that the embossing plates are very expensive to produce, since the einzuprägenden structures must protrude as negative structures from the plate surface, which makes a production very expensive. In addition, such embossing plates are subject to high wear. A simple variation of the einzuprägenden structures is therefore not readily possible, as each new stamping plates must be made. In particular, a small series production of individualized security documents with embossed structures is therefore not possible according to the current state of the art at a reasonable cost.

Of the The invention is therefore based on the technical problem of composite safety documents, the one document body, one of several layers Manufactured monolithic laminate body is with one watermark-like security feature, and a method for its To provide manufacturing that eliminate the disadvantages described above and in particular an individualization of the composite security elements in a simpler way.

The technical problem is achieved by an article having the features of claim 1 and a Method solved with the features of claim 11. Further advantageous embodiments of the invention will become apparent from the dependent claims.

The invention is based on the idea of creating hollow relief-like structures inside the composite security document. For this purpose, it is provided according to the invention to create one or more empty cavities in the layer or stack structure prior to lamination. These cavities can be created by recesses in the material to be laminated of the layers. As empty recess or empty cavity is considered one which does not have a material to be laminated or another material in the stack construction and completely of plastic material to be laminated is surrounded. The resulting from the empty recess during lamination structure is referred to as a hollow relief-like structure. The security feature formed in the composite security document is thus referred to as a hollow relief-like structure. Thus, there is proposed a composite security document having an inner hollow relief-like structure comprising a document body, the document body being a monolayer laminate body made of multiple layers, the document body comprising at least one hollow-relief-type structure, as in a high-temperature, high-pressure lamination process, from an upper and lower side, formed on a layering direction of the layers, formed in at least one of the layers before the lamination process empty recess is formed. Furthermore, a method for producing a composite security document with a document body is proposed, comprising the following steps: providing a plurality of layers, arranging the plurality of layers one above the other and laminating the plurality of superimposed layers in a high-temperature high-pressure lamination process to a monolithic card body, wherein at least one of the plurality of layers at least one recess is introduced and the plurality of layers are arranged so that the at least one recess is closed to a top and a bottom of the superimposed layers and the volume of the recess is empty and the empty recess is preferably evacuated and the lamination is carried out so as to form a hollow-relief-like structure in the card body. Here, the new knowledge is exploited that above the glass transition temperature of the plastics to which the layers are heated in the high-temperature high-pressure lamination process, can be kept in a viscosity range, which causes a complete fusion of the superimposed layers, but on the other hand The result is that the empty recesses and cavities are not filled so completely by material of the layers that the contours of the recess completely disappear. The plastics are also above the glass transition temperature and at high pressures unable to fill the recess leveling with material, as would be expected for a low viscosity liquid. The recess can therefore be seen slightly lowered with running contours. Although such a watermark-like structure is not at all or only difficult to see in transparency, but in grazing incidence, especially in reflection, such a watermark internal hollow-relief-like structure is clearly visible. Such a structure, since it is formed in the interior of the document body, has a high security against counterfeiting.

Especially Preferably, the recess is in at least one prior to lamination formed inside layer. This ensures that the inner hollow-relief-like structure of one of the surfaces Seen from deep into the document body protrudes.

Around but at the same time to create a tactile security feature is provided in an embodiment of the invention, that the hollow-relief-like structure on one of the surfaces includes perceptible depression. Such on the surface Perceptible recess can also be used in manufacturing processes achieve, where the recess before laminating only in internal layers, d. H. not formed in the layer is arranged on a surface of the document body is. The advantage of such an embodiment is that the hollow-relief-like structure not only visually, but also tactile is perceptible.

Also Parts of a material from which the layers above and / or below the recess (with respect to the direction of layering) are formed, be in addition to the material of the layers in the the recess is used to fill the recess. Especially in the area of the edges of the recesses occur thus in above or below arranged layers "contour changes" on.

In order to make the hollow-relief-like structures visually perceptible in a particularly simple manner, it is provided in a preferred embodiment that an optically variable security feature is incorporated in a region of the at least one hollow-relief-like structure, in particular by a structure with an interference color in a hollow relief-like structure overlapping area printed layer is incorporated between the original recess and the outside of the document body. An optically variable security feature is understood to be any security feature that produces a different impression as a function of a viewing direction. For example, an interference color changes its perceived color depending on the viewing angle. If, for example, a layer arranged above the recess is printed with an interference color in a region which completely covers the recess, the contour changes occurring in this layer due to the filling of the recess result in different angles of incidence or angles of reflection in the region of the edge of the original recess the printed with interference color layer occur. Thus, the security feature is not only visible in a grainy viewing of the document. In the area of the hollow relief-like structure Thus, different colors occur without having to change a viewing angle of the document. Thus, a verification of the hollow-relief-like structure is greatly simplified. Preferably, the optically variable security feature is also incorporated in an inner layer, so that a tamper resistance and protection against wear are increased.

Around "grayscale" watermarks in the interior of the To produce document body is at a preferred Embodiment provided that the at least one hollow-relief-like structure apart from a border contour areas of different material thickness having on the lamination direction. This means that the Recess in different areas, no edge areas the recess are, d. h., are not such areas, the one Indicate contour of the recess in plan view, different strengths, based on a layering direction of the individual laminated on one another Has layers. A visual perceptibility is thereby increased that above or below the recess an opaque layer, which can be printed, for example, is arranged. That is, preferably Before lamination, it is an opaque layer or at least a part an opaque layer between the recess and a surface the layer stack arranged.

A grayscale watermarks structure can be also bring in a document body when the document body at least one more due to another in at least one the, preferably internal, layers before lamination formed recess formed hollow-relief-like structure is, in terms of their geometric design, in particular their extent, with respect to the stratification direction, of the at least distinguishes a hollow-relief-like structure. By providing several separately formed hollow relief-like structures is it possible to have a pattern, for example a pixelated one Pattern to incorporate into the document body. The variety of hollow-relief-like structures arranged in a pattern are preferably have different dimensions along the stratification direction. The bigger the extension along the stratification direction, the stronger you can towards a surface of the document body arranged layers in the region of the recess during lamination be influenced and changed. The variety of hollow-relief-like Layers preferably lead to different material thicknesses of the map document on the different hollow relief-like structures. It is understood, however, that several of the plurality of hollow-relief-like structures each have the same extent along the lamination direction or to the same thickness of the document body lead in the region of the respective hollow-relief-like structure. This means that the plurality of hollow-relief-like structures by means of a variety of recesses is generated, based on a Layering direction have a different extent. The greater the extent of the recess related the layering direction is, the lower the material thickness in the area of the forming hollow-relief-like structure.

Especially simply the recesses can be generated by that inside lying layers punched out are introduced. The advantage The use of punching is that these are simple Way can be introduced and a variety of punched for Generating a pattern in a layer can be introduced. A variation of the pattern is easily possible. hereby it is also possible to have individualized document bodies in which, for example, a document body number via a Binary coding using hollow relief-like structures is formed, is introduced.

In order to produce recesses of different extent with respect to a layering direction, it is provided in a preferred embodiment that the at least one recess and / or the at least one further recess are formed by superimposed punches of a plurality of inner layers. Advantageously, it is thus provided that the at least one recess and the at least one further recess are punched out and additional recesses are introduced into at least one further layer and the at least one layer and the at least one further layer are arranged as inner layers during the layering in such a way that they are covered On the layering direction different numbers of recesses and / or different deep recesses are arranged one above the other, so that form different hollow-relief-like structures of the at least one recess and the at least one further recess. The greater the extent of the recess with the same edge contour, ie extent and shape transverse to the layering direction, the greater the deformations of the layers arranged above and / or below during lamination in the area of the formerly existing recess. Grayscale can be produced in a stamped pattern, for example, by punching recesses in a plurality of the layers, so that when stacking the plurality of stamped layers as inner layers at different locations different numbers of punched holes are arranged one above the other. As a result, different hollow relief-like structures form in the document body. Furthermore, can the hollow-relief-like structures in different structures, ie in different planes perpendicular to the layer plane, be formed in the document body.

recesses can not be introduced into the layers just by punching Rather, all other techniques can do so can be used, which can cause a layer thickness modulation. These preferably include an engraving, different from the punching Laser processing techniques, etc.

at a preferred embodiment of the invention is provided that by means of the hollow-relief-like structures diffractive surface structures at least one surface of the document body be generated. Advantage of this embodiment is that simple punch outs can be used to to create diffractive surface structures. Elaborately made Printing plates or stamping plates, as in the prior art used are not required for this.

at a development of the invention is provided that due to the hollow-relief-like structures on one of the surfaces forming depressions filled by a contrast-generating material become. This may be a paint or paste, which For example, metallic particles, carbon black or the like includes. Such an embodiment is capable, too to create a contrast in transmitted light. By the choice of the filling Material can be determined whether a contrast in the visible Range, UV range or in the infrared wavelength range is formed. It is particularly preferred if both in the visible as also in the infrared wavelength range contrast to the rest of the document body material is generated, so that both a simple optical backlight test as well as a machine test in the infrared wavelength range can be done. Thus, an overpressure of the Document body with one in the infrared wavelength range transparent color.

The Features of the manufacturing method according to the invention have the same advantages as the corresponding features of the invention Composite security document.

following The invention is based on preferred embodiments explained in more detail. Hereby show:

1a - 1c Process for producing a document body with a hollow relief-like structure;

2a - 2c schematically illustrates a process for producing a composite security document having a document body comprising a pattern of hollow relief-like structures for forming a watermark-like overall structure; and

3a - 3c schematic representation of another composite security document with a grayscale mimicking watermark-like structure of several hollow relief-like structures.

In 1a to 1c are different process stages for producing a composite security document 1 shown, which finished in 1c is shown. The composite safety document 1 includes a document body 2 made up of several layers 3 - 7 in a high pressure, high temperature lamination process. This means that the multiple layers 3 - 7 be laminated using a suitable temperature and pressure profile. Such methods are known to the person skilled in the art. The in 1c shown document body is made of five layers 3 - 7 built up. Generally, the number of layers used is between 3 and 15, preferably between 5 and 12. The document body 2 has a hollow relief-like structure 8th in the high-pressure, high-temperature lamination process from an empty recess in an inner layer, here a middle layer 5 , is generated. The hollow relief-like structure 8th is a watermark-like structure of the composite security document 1 ,

For the production of the hollow-relief-like structure 8th is first in a layer 5 , which is preferably a plastic film, incorporated a recess. In the example shown, a T-shaped recess 9 preferably introduced by means of a punching. The plastic film is preferably a film having a thickness ≦ 100 μm, preferably ≦ 50 μm and particularly preferably ≦ 35 μm. As in 1b is shown, the with the T-shaped recess 9 provided layer 5 as a middle layer between the remaining layers 3 . 4 and 6 . 7 layered. In order to prevent inclusion of gas molecules, the layers are preferably carried out in vacuo. As a result, the empty space in the recess 9 evacuated. In stacked state, thus, the empty and evacuated recess is in the middle of the layer stack 10 , The layer stack 10 now becomes a monolithic document body in a high pressure, high temperature lamination process 2 who in 1c is shown merged. Here are the individual layers 3 - 7 heated to a temperature above the glass transition temperature of the individual plastics making up the layers 3 - 7 consist. As plastic layers in particular plastic films with high softening temperature are used. Particularly preferred especially polyethylene terephthalate and its derivatives and particularly preferably polycarbonates, in particular bisphenol A polycarbonate used. Furthermore, relevant known thermoplastically processable plastics such as polyvinyl chloride, acrylonitrile-butadiene-styrene and a composite material such as Teslin are used. These are preferably heated to temperatures ≥ 100 ° C., preferably to temperatures ≥ 120 ° C., and most preferably to temperatures above 140 ° C. At the same time, the layers are pressed together by high pressure. The pressure is parallel to a direction of stratification 11 applied. Ie. the upper layer 3 and the lower layer 7 Adjacent elements exert pressure on the films so that they are parallel to the direction of lamination 11 be pressed against each other. In this case, pressures of more than 50 bar are typically used. Despite the heating above the glass transition temperature and the application of the high pressure, the T-shaped recess does not fully penetrate through middle layer material 5 as well as material of the overlying layer 4 as well as underlying layer 6 so filled that results in a homogeneous card body in the region of the recess. Rather, a hollow-relief-like structure remains 8th , which arises from the fact that parts of the material of the overlying layer 4 and / or the underlying layer 6 almost into the recess 9 be involved. In the finished document body 2 is the original T-shaped contour 12 the recess 9 still washed out as a blurred or washed-out contour 13 to recognize. This is in 1c by a dashed representation of the washed-out contour 13 indicated. In the recess is material of the overlying layers 3 . 4 and / or the underlying layers 6 . 7 penetrated. Depending on the different layer thicknesses this can lead to the hollow-relief-like structure 8th as a depression on a surface 14 of the document body 2 is perceptible.

It has turned out to be particularly advantageous between the recess 9 and the top 15 and / or the bottom 16 an opaque layer, here the layers 4 and 6 to arrange. These opaque layers 4 and 6 can be printed, for example. As a result, the recognizability of the inner hollow relief-like structure is increased. It has turned out to be particularly advantageous for these layers 4 . 6 for example, at least in the area of the T-shaped recess 9 covered to print with an interference color. An interference color is an optically variable feature that can be used as a security feature. By lowering material over the recess 9 arranged layer 4 , which is printed with the interference color, there is a deformation of this layer 4 , so especially in the area of the blurred contour 13 "Bends" of the printed layer occur. As a result, the hollow-relief-like structure 8th not only clearly visible under grazing viewing angles. The hollow-relief-like structure produces a characteristic appearance and / or a characteristic color spectrum at a fixed viewing angle. Changing the viewing angle usually changes the appearance and the color spectrum.

In 2a to 2c Figure 3 schematically shows the manufacture of another composite security document 1' shown schematically. In one as a foil 5 ' trained layer will be several recesses 17 introduced, which form a pattern. The recesses 17 may preferably be stamped. However, any other methods, such as laser processing methods, may be used to form the recesses 17 to introduce into the film. For example, the recesses do not have to completely penetrate the film, ie represent through openings.

The layer 5 ' is then over trained as films layers 7 and 6 layered. About the shift 5 ' become more films designed as films 4 and 3 layered. As in the embodiment according to 1 For example, the films are preferably stacked under vacuum conditions so that the recesses 17 be evacuated. As in the embodiment according to 1a to 1c become the layers 3 . 4 . 5 ' . 6 . 7 in a high pressure, high temperature lamination process into a monolithic document body 2 ' merged. About a variation of an extent of the individual recesses 17 in the layer 5 ' and over a distance of the recesses 17 a visual impression can be varied. As a result, it is possible grayscale watermark-like structures that consist of individual hollow relief-like structures 8th' consist of manufacture.

In 3a to 3c Figure 3 schematically shows the manufacture of another composite security document 1'' shown. In this embodiment, in two layers 5 '' and 5 ''' Recesses introduced. These are again preferably introduced as punched. The layers 5 '' and 5 ''' are then over the layers 7 and 6 layered. Here are the layers 5 '' and 5 ''' arranged so that some of the recesses 18 the layer 5 '' over recesses 19 the layer 5 ''' to be ordered. A recess 20 in the layer 5 '' and a recess 21 in the layer 5 ''' are not arranged one above the other. This results in a stack of layers 10 Recesses of different extent along the layering direction 11 , The stratification is again preferably under vacuum conditions, so that the resulting recesses are partially made up two recesses 18 . 19 are formed, are empty and each up and down by an above / below lying, preferably opaque, layer 6 . 4 Are completed. In a subsequent high pressure, high temperature lamination process, the individual layers become 3 . 4 . 5 '' . 5 ''' . 6 . 7 to a document body 2 '' the composite safety document 1'' merged. In this monolithic document body 2 '' are different hollow relief-like structures 23 . 24 . 25 formed, which are formed differently, since the recesses from which they originated, had different dimensions before lamination. The hollow relief-like structures 24 coming from the parallel to the stratification direction 11 a larger expansion recesses made from the recesses 18 . 19 the layers 5 '' . 5 ''' are formed, deform the layers above and below 3 . 4 and 6 . 7 stronger than those from the recesses 20 . 21 resulting hollow-relief-like structures, which has a smaller extent parallel to the lamination direction 11 exhibited. Further, the hollow-relief-like structures 23 and 25 coming out of the recess 20 in layer 5 '' and the recess 21 in layer 5 ''' emerged, trained in different levels. This is the visual impression of the individual hollow relief-like structures 23 . 24 . 25 different, especially if in the hollow relief-like structure an opaque layer, as here the layers 4 and 6 are included, for example, with an optically variable security feature, such as an interference color, printed.

Are the hollow-relief-like structures formed so that tactile perceptible depressions on an upper side 15 and / or bottom 16 form, so they can be filled in one embodiment with a contrast-generating substance. For example, pastes or gels may be incorporated in these recesses, which include soot particles, metal particles, etc. As a result, contrast formation in different wavelength ranges can be achieved.

In a preferred embodiment, similar to the embodiments according to 2a to 2c and 3a to 3c in the layers 5 ' respectively. 5 '' and 5 ''' introduced patterns are varied so that individualized card body are produced. For example, information about the extent of the recess along the direction of layering before the lamination process can be encoded. For example, the one through the recesses 20 or 21 in the slides 5 '' and 5 ''' formed recesses assigned a binary value 0, so can the through the superposed recesses 18 . 19 in the layers 5 '' and 5 ''' formed recesses be assigned a binary number 1. By this it is now possible to encode any binary numbers into the card body. It will be apparent to those skilled in the art that not only binary encodings but much more complex encodings can be incorporated into the document body. It should be emphasized that individualized punching out of the layers are easy to accomplish.

The Punching can also be done in the opaque layer, so that the Security feature in transmitted light is to be considered. Here you can either all the opaque layers have recesses so that themselves hollow relief-like structures in the form of transparent translucent windows result, or only single opaque layers recesses before laminating exhibit. In the second case, there are translucent hollow-relief-like Structures. It will be apparent to one skilled in the art that in further Embodiments both transparent and translucent hollow-relief-like structures formed in a document body could be.

The described embodiments are exemplary only Embodiments. The individual features described of the various embodiments described in any combination for realizing the invention with each other be combined. The composite security document described can to be a complete security document. In other embodiments For example, can it be translated into a "parent" Security document, such as a passport, inserted be.

1, 1 ', 1' '

Laminated safety document

2, 2 ', 2' '

document body

3, 4, 5, 5 ', 5' ', 5' '', 6, 7

layers

8th, 8th'

hollow-relief structure

9

recess

10

layer stack

11

layering direction

12

contour

13

blurry contour

14

surface

15

top

16

bottom

17 18, 19, 20, 21

recesses

23 24, 25

hollow-relief structures

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19949945 [0005]
• - DE 10036505 [0005]

Claims (17)

Composite security document ( 1 . 1' . 1'' ) with an inner hollow relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) comprising a document body ( 2 . 2 ' . 2 '' ), the document body ( 2 . 2 ' . 2 '' ) one of several layers ( 3 - 7 ) is a monolithic laminate body produced, characterized in that the document body ( 2 . 2 ' . 2 '' ) at least one hollow relief-like structure ( 8th . 8th'; 23 . 24 . 25 in a high-pressure high-temperature lamination process from one to a top and bottom ( 15 . 16 ) in relation to a stratification direction ( 11 ) of the layers ( 3 - 7 ) in at least one of the layers ( 3 - 7 ) before the lamination process formed empty recess ( 9 ; 17 ; 18 - 21 ) is formed. Composite security document ( 1 . 1' . 1'' ) according to claim 1, characterized in that the at least one recess ( 9 ; 17 ; 18 - 21 ) in at least one layer lying inside during the stratification ( 5 . 5 ' . 5 '' . 5 ''' ) is trained. Composite security document ( 1 . 1' . 1'' ) according to claim 1 or 2, characterized in that the hollow-relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) one on one of the surfaces ( 14 ) perceptible well. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 3, characterized in that in a region of the at least one hollow-relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) an optically variable security feature is incorporated, in particular by one with an interference color in a hollow-relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) overlapping area printed layer between the original recess ( 9 ; 17 ; 18 - 21 ) and the surface ( 14 ) of the document body ( 2 ) is incorporated. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 4, characterized in that the at least one hollow-relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) apart from a border contour ( 13 ) Areas of different extent with respect to the stratification direction ( 11 ) having. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 5, characterized in that in the document body ( 2 ) at least one further due to a further in at least one of the preferably inner layers ( 5 . 5 ' . 5 '' . 5 ''' ) hollow relief-like structure formed before the lamination ( 8th'; 23 . 25 ) is formed, which in terms of their geometric configuration, in particular their extent with respect to the layering direction ( 11 ), of the at least one hollow-relief-like structure ( 8th'; 24 ) is different. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 6, characterized in that the at least one recess ( 9 . 17 . 20 ) and / or the at least one further recess ( 18 . 19 . 21 ) by punching in layers inside ( 5 . 5 ' . 5 '' . 5 ''' ) are formed. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 7, characterized in that the at least one recess and / or the at least one further recess by means of superimposed punch-outs of several inner layers ( 5 '' . 5 ''' ) are formed. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 8, characterized in that a plurality of hollow relief-like structures ( 8th . 23 . 24 . 25 ) are preferably arranged in a pattern of different expansion. Composite security document ( 1 . 1' . 1'' ) according to one of claims 1 to 9, characterized in that the at least one recess ( 9 . 17 . 18 . 19 ) formed at least one hollow-relief-like structure ( 8th . 8th'; 24 ) mirror-image depression on an opposite side of the document body ( 2 ). Method for producing a composite security document ( 1 . 1' . 1'' ) with a document body ( 2 ), comprising the following steps: providing multiple layers ( 3 - 7 ); Arranging the multiple layers ( 3 - 7 ) one above the other; Laminating the several superimposed layers ( 3 - 7 ) in a high pressure, high temperature lamination process into a monolithic document body ( 2 ), characterized in that in at least one of the several layers ( 3 - 7 ) at least one recess ( 9 ; 17 ; 18 - 21 ), and the multiple layers ( 3 - 7 ) are arranged so that the at least one recess ( 9 ; 17 ; 18 - 21 ) to a top and a bottom ( 15 . 16 ) of the layers ( 3 - 7 ) and the volume of the recess ( 9 ; 17 ; 18 - 21 ) is empty, and the at least one empty recess ( 9 ; 17 ; 18 - 21 ) is evacuated, and the lamination is performed so that a hollow-relief-like structure ( 8th . 8th'; 23 . 24 . 25 ) in the document body ( 2 ) trains. A method according to claim 11, characterized in that one between the at least one with the at least one recess ( 9 ; 17 ; 18 - 21 ) layer ( 5 . 5 ' . 5 '' . 5 ''' ) and a surface ( 14 ) layer ( 4 . 6 ) in one the recess ( 9 ; 17 ; 18 - 21 ) overlapping area an optically variable security feature sums, in particular with an interference color is printed. A method according to claim 11 or 12, characterized in that the at least one recess regions of different depth with respect to the lamination direction ( 11 ) having. Method according to one of claims 11 to 13, characterized in that in the at least one with the at least one recess ( 19 ) layer ( 5 ' . 5 '' . 5 ''' ) is formed at least one further recess, which differs from the at least one recess in terms of their geometric configuration, in particular their depth with respect to the layering direction ( 11 ), differentiates. Method according to one of claims 11 to 14, characterized in that the at least one recess ( 18 ) and the at least one further recess ( 20 ) from the at least one layer ( 5 '' ) and in at least one further layer ( 5 ''' ) additional recesses ( 19 . 24 ) and the at least one layer ( 5 '' ) and the at least one further layer ( 5 ''' ) are arranged as layers as inner layers in such a way that with respect to the layering direction ( 11 ) many different recesses ( 18 - 21 ) and / or differently extended recesses are arranged one above the other so that different hollow relief-like structures ( 23 . 24 . 25 ) in the document body ( 2 ) train. Method according to one of claims 11 to 15, characterized in that the at least one hollow-relief-like structure ( 8th ) is formed so that one on the surface ( 14 ) forms at least one tactile perceptible depression. Method according to claim 16, characterized in that that the at least one perceptible depression with a Contrast generating material is filled.