Security element transfer material and method for producing the same

Abstract

A method for producing a security feature transfer material (10) comprising the following steps: providing a carrier film (16); applying a release layer (22) to the carrier film (16); partially applying one or more superimposed layers to create a functional layer structure (70) exhibiting an optically variable effect, such that its outer contour (71) lies completely on the release layer (22); and applying an adhesive layer (50) to the functional layer structure (70) such that it either exactly covers the functional layer structure (70) or extends a portion beyond the outer contour (71) of the functional layer structure (70) to reach the release layer (22). The disclosure also relates to a corresponding security feature transfer material (10) as such and a method for producing a valuable item (10) using the security feature transfer material (10).The release layer (22) is applied only partially, such that an outer contour (33) of the release layer (22) extends beyond the outer contour (71) of the functional layer structure (70) all around.

Description

[0001] The invention relates to a security element transfer material, a method for producing the security element transfer material and a method for producing an object of value, in particular a security document, using the security element transfer material.

[0002] Valuables, such as branded goods or valuable documents, especially banknotes, are often equipped with security features that allow for verification of their authenticity and simultaneously serve as protection against unauthorized reproduction. Security features that exhibit an optically variable effect are frequently encountered. Particularly popular are so-called tilt effects, in which the optical appearance changes depending on the viewing angle. Tilt effects can be created, for example, by metallized embossing. Examples include diffractive embossing structures with dimensions on the order of visible light, so-called embossed holograms, or embossing structures with larger dimensions in the form of micromirrors.

[0003] In the production of multi-layered security elements, a corresponding functional layer structure can first be built up on a carrier film and later transferred from there to the valuable item. These are also referred to as transfer elements, e.g., in the form of applicable patches, labels, strips, or threads embedded in security paper. Typically, the top layer of the security element is an adhesive layer, such as a heat-seal lacquer layer, which bonds the security element to the valuable item.

[0004] In some designs, it is advantageous for the security element to retain its backing film after being transferred to the valuable item, thus forming an integral part of the security element. In other designs, however, it is desirable to remove the backing film from the security element after transfer. Compared to an integrated backing film, this backing film thus forms only a temporary part of the security element, which is very thin after removal. This avoids stacking problems with valuable items. The challenge lies in reliably and precisely removing the security element from the backing film.

[0005] A security element in the form of a transfer element and a method for manufacturing it are known from German patent application DE 10 2016 009 318 A1. The security element comprises a carrier film, a release layer applied over the entire surface of the carrier film, a functional layer structure applied over the entire surface of the release layer, a grid-like stabilizing layer applied partially over the functional layer structure, and a heat-seal varnish layer applied over the entire surface of the functional layer structure and the grid-like stabilizing layer. To complete the security element, the grid-like stabilizing layer, including the heat-seal varnish layer, the functional layer structure, and the release layer, is die-cut from the carrier film as the area not to be transferred and then "weeded" so that the remaining part forms the security element or the area to be transferred.The removal of the mesh is made possible by the tough, grid-like stabilizing layer, which provides the necessary stability to the material of the non-transmission area. The remaining transmission area, forming the security element, is then bonded to a banknote substrate using a heat-sealable lacquer layer, and finally the backing film is removed from the security element.

[0006] The method described in German patent application DE 10 2016 009 318 A1 is complex. Before the security element is transferred to the banknote substrate, the method requires a die-cutting operation and die-cutting to separate the non-transfer area from the transfer area. Patent application WO 2016 / 152508 A1 discloses a transfer medium that has a transfer section and a non-transfer section and comprises a carrier material with a substrate and a peelable resin layer formed on the substrate, as well as a transfer material with a transparent substrate formed on the peelable resin layer of the carrier material, a hologram layer, and an adhesive layer formed on the hologram layer. Patent application WO 96 / 01187 A1 describes an embossing foil that has decorative or security elements in certain areas.To ensure that only the areas intended for the substrate are transferred during the application of decorative or securing elements, it is proposed that at least the adhesive layer be applied only in certain areas and in a synchronized manner with another layer that is also only present in certain areas, or with the decorative or securing elements themselves that are only formed in certain areas. The release layer may be applied in certain areas. The release layer does not extend beyond the outer contour of the functional layer structure.

[0007] The invention is based on the objective of providing a method for producing a security element transfer material in a simple manner, as well as providing a corresponding security element transfer material.

[0008] This problem is solved by a method for producing a security element transfer material and a corresponding security element transfer material having the features of the independent claims. Further developments of the disclosure are the subject of the dependent claims.

[0009] A first aspect of the present disclosure relates to a method for producing a security element transfer material, in which a carrier film is provided, a release layer is applied to the carrier film, one or more superimposed layers are partially applied to create a functional layer structure exhibiting an optically variable effect, such that the functional layer structure with an outer contour lies completely on the release layer, and an adhesive layer is applied to the functional layer structure in such a way that it either exactly covers the functional layer structure or extends a certain distance beyond the outer contour of the functional layer structure until reaching the release layer.

[0010] The carrier film essentially serves to support the security element transfer material during manufacturing and, after the transfer of the security element transfer material onto a substrate of a valuable item, such as a document substrate, to be detached from the carrier film. The carrier film can be, for example, a PET film. For the mass production of security element transfer materials, the carrier film is available as continuous roll stock or as multi-sheets, onto which several security elements are mounted side by side.

[0011] The release layer exhibits only weak adhesion to the carrier film to allow for subsequent removal of the carrier film from the security element transfer material. The release layer can be, for example, a UV lacquer layer, a wax layer, or a release varnish layer. The release layer is applied to the carrier film either over its entire surface (this is not claimed) or, according to the invention, only partially. When the release layer is applied partially, its design is freely selectable and preferably corresponds to a design of the functional layer structure applied over it. Preferably, the release layer is transparent.

[0012] The functional layer structure provides a safety function for the security element transfer material through its optically variable effect, such as a tilting effect. The functional layer structure is applied partially, such that its outer contour lies completely on the release layer. However, the entire functional layer structure does not need to lie completely on the release layer. For example, the functional layer structure can lie partially on the release layer and partially on the carrier film. The important thing is that its outer contour lies completely on the release layer. The design of the partially applied functional layer structure is also freely selectable. Preferably, the design of the release layer and the functional layer structure are similar, preferably identical, except that the release layer extends laterally beyond the functional layer structure, thus having a larger outer contour.

[0013] The adhesive layer ensures the desired bond between the functional layer assembly and the substrate of the valuable item, in particular a document substrate, and exhibits stronger adhesion to the substrate than the adhesion between the carrier film and the release layer, and, insofar as the functional layer assembly is not entirely covered by the release layer, than the adhesion between the carrier film and the functional layer assembly. The adhesive layer is applied to the functional layer assembly in such a way that it either covers the assembly exactly or extends slightly beyond its outer contour until it reaches the release layer. "Slightly" means that the adhesive layer does not reach the boundary of the release layer and extends only minimally beyond the functional layer assembly, preferably as minimally as is technically feasible.Ultimately, it is the adhesive layer that defines the contour of the security element transferred from the carrier film to the valuable item. Therefore, the adhesive layer should protrude less than 2 mm, preferably less than 1 mm, and most preferably less than 0.5 mm. The adhesive layer can be, for example, a heat-sealable lacquer that melts under pressure and elevated temperature. The adhesive layer can be transparent and applied to a transparent window in the substrate of the valuable item, so that the optically variable effect is also visible from the opposite side of the item.

[0014] A key aspect of the present method is that the contour of the partially applied adhesive layer essentially defines the area of ​​the security element transfer material to be transferred, and thus the contour of the security element itself. During the subsequent transfer, only the security element is bonded to the substrate of the valuable item by means of the adhesive layer, while any area of ​​the security element transfer material not intended for transfer cannot bond to the substrate due to the absence of the adhesive layer. The present method for producing the security element transfer material with its removable carrier film requires no grid-like stabilizing layer, no die-cutting operation, and no weeding. Therefore, the manufacturing process is simple.

[0015] Before applying the adhesive layer, a primer can be applied to the functional layer assembly in such a way that it either completely covers the functional layer assembly or extends slightly beyond its outer contour until reaching the release layer. The adhesive layer is then applied to the primer. The primer serves to improve the bond between the functional layer assembly and the adhesive layer.

[0016] According to the invention, as already mentioned, the release layer is applied to the carrier film only partially, such that the outer contour of the release layer extends beyond the outer contour of the functional layer structure all around. This extended portion of the release layer effectively prevents adhesion between the adhesive layer and the carrier film. Such adhesion is undesirable because it can prevent the subsequent removal of the carrier film from the security element transfer material and can lead to breakage of the security element.

[0017] In the case of a release layer applied only partially, the functional layer structure is created such that it either lies completely on the partially applied release layer or extends beyond an inner contour of the partially applied release layer. In the first variant, the functional layer structure lies completely between the adhesive layer and the release layer, while in the second variant, it is completely covered on one side by the adhesive layer and on the other side partially by the release layer and partially by the carrier film. Compared to the first variant, the security element transfer material can be manufactured even thinner according to the second variant. In particular, an observer looks directly at the functional layer structure of the security element applied to the valuable item and not through the release layer, so that the optically variable effect is particularly effective.

[0018] If the functional layer assembly lies entirely on the release layer, the release layer is preferably transparent or at least translucent so as not to impede the optically variable effect of the functional layer assembly. This is because the release layer is the uppermost layer of the security feature ultimately applied to the valuable item, and it is through this layer that an observer can see. The release layer may also incorporate other security features, such as interference layer pigments, liquid crystal pigments, or fluorescent substances. However, if only the outer contour of the functional layer assembly lies on the release layer, the release layer can also be opaque and form a kind of frame for the optically variable effect of the functional layer assembly.

[0019] In one embodiment, during the step of creating the functional layer structure, an embossing layer is applied into which a motif is embossed. The embossing layer can, for example, be a UV embossing varnish layer, which is applied, e.g., printed, in such a way that its outer contour lies completely on the release layer.

[0020] A metallization layer is then applied to the embossed motif to create a metallized embossed layer as a functional layer structure. The structures of the embossed layer can be so small that they act diffractively and create a holographic effect, or they can be larger and form micromirrors with the metallization layer. The metallized embossed layer thus exhibits a tilting effect, in which the optical appearance changes depending on the viewing angle.

[0021] Before applying the metallization layer, a wash layer can be applied to the embossing layer in such a way that the wash layer only partially covers the embossing layer. After the metallization layer is applied, the wash layer is removed along with the overlying metallization layer by washing, so that the metallization layer forms at least one pattern or character, e.g., as negative text (clear text). Alternatively, instead of using the wash layer, the metallization layer can be partially demetallized by etching or laser treatment. The demetallized areas of the metallization layer also create a translucent effect, which makes the pattern or character particularly clear when viewed in transmitted light.

[0022] To ensure that the security feature has the sharpest possible contours when the carrier film is later removed from the security feature transfer material, a continuous or interrupted die-cut line can be provided through the adhesive layer and the release layer. This line is created on the carrier film, for example, using a mechanical die-cutting tool or a laser. The die-cut line is not essential for removing the carrier film from the security feature transfer material, as the outline is essentially determined by the contour of the adhesive layer. However, the die-cut line ensures a clean and sharp release edge.

[0023] A second aspect of the present disclosure relates to a corresponding security element transfer material as such. The security element transfer material comprises a carrier film, a release layer applied to the carrier film, a functional layer structure comprising one or more superimposed layers and exhibiting an optically variable effect, which lies completely on the release layer with an outer contour, and an adhesive layer applied with register accuracy to the functional layer structure such that it projects a short distance beyond the outer contour of the functional layer structure until reaching the release layer.

[0024] A third aspect of the present disclosure relates to a method for manufacturing a valuable item, in which the security element transfer material is manufactured according to either the first aspect of the present disclosure or provided according to the second aspect of the present disclosure, a substrate of a valuable item, e.g., a document substrate, is provided, the security element transfer material is bonded to the substrate by means of the adhesive layer of the security element transfer material, and the backing film is removed from the security element transfer material, so that the security element remains on the valuable item. The security element allows verification of the authenticity of the valuable item and also serves as protection against unauthorized reproduction.

[0025] The substrate of the valuable item is, for example, a paper substrate, polymer substrate, or composite substrate for the production of valuable documents such as banknotes, identity cards, shares, certificates, stamps, checks, admission tickets, train tickets or airline tickets.

[0026] If the adhesive layer includes a heat-sealable lacquer layer, heating occurs either across the entire security element transfer material or only in the area where the heat-sealable lacquer layer is located. The adhesive layer is preferably activated by UV radiation to cure.

[0027] Further examples and advantages are explained below with reference to the schematically simplified figures, which are not drawn to scale or proportion to enhance clarity. These figures show: Fig. 1schematically a banknote 1 with a security element 12, Fig. 2 a top view of a security element transfer material 10 comprising an endless carrier film 16 on which a plurality of security elements 12 are applied, Fig. 3 schematically a first unclaimed embodiment of the safety element transfer material 10 in cross-section, Fig. 4 schematically a second embodiment of the safety element transfer material 10 according to the invention in cross-section, Fig. 5 schematically a third embodiment of the safety element transfer material 10 in cross-section, Fig. 6 schematically a fourth embodiment of the safety element transfer material 10 in cross-section, Fig. 7 schematically the security element transfer material 10 from Fig. 6 on a banknote substrate 14 in cross-section, Fig. 8 the arrangement from Fig. 7with carrier film 16 detached from the safety element 12 in cross-section, Fig. 9 schematically a fifth embodiment of the safety element transfer material 10 in cross-section, and Figures 10A to 10F Schematic representation of individual process stages in the manufacture and application of a sixth embodiment of the safety element transfer material 10 in cross-section.

[0028] Fig. 1 Figure 1 shows a schematic representation of a banknote 1 with a security element 12. The banknote 1 comprises a banknote substrate 14 onto which the security element 12 is applied. The banknote substrate 14 is, for example, a paper substrate, polymer substrate, or composite substrate. The design of the security element 12 may differ from the illustrated star. The security element 12 allows for verification of the authenticity of the banknote 1 and simultaneously serves as protection against unauthorized reproduction.

[0029] Fig. 2The figure shows a top view of a security element transfer material 10 comprising an endless carrier film 16, e.g., an endless PET film in roll form, on which a plurality of security elements 12 are applied. In contrast to Fig. 2 It is also possible that only a single safety element 12 is provided on a carrier film 16 or that the carrier film 16 is available as a multi-use sheet.

[0030] Fig. 3Figure 1 shows a cross-sectional view of a first embodiment of the safety element transfer material 10. This first embodiment is not claimed and facilitates understanding of the invention.The security element transfer material 10 comprises a carrier film 16, a transparent release layer 22 which is applied over the entire surface of the carrier film 16, a functional layer structure 70 which is applied only partially to the release layer 22, an optional primer 60 which is applied to the functional layer structure 70 in such a way that it terminates with an outer contour 71 of the functional layer structure 70 or, as in this case, extends a short distance beyond the outer contour 71 of the functional layer structure 70 until reaching the release layer 22, and a heat-seal lacquer layer 50 which is applied to the optional primer 60 in such a way that it terminates with the outer contour 71 of the functional layer structure 70 or extends a short distance beyond the outer contour 71 of the functional layer structure 70 until reaching the release layer 22.For example, the protrusion of the heat-seal lacquer layer 50 can be less than 2 mm, preferably less than 1 mm, particularly preferably less than 0.5 mm.

[0031] Fig. 4 Figure 1 shows a second embodiment of the security element transfer material 10 in cross-section. The second embodiment is according to the invention. The security element transfer material 10 according to Fig. 4 differs from the security element transfer material 10 according to Fig. 3 by the fact that the release layer 22 is only partially applied to the carrier film 16. The release layer 22 has an outer contour 33 that extends beyond the outer contour 71 of the functional layer structure 70 all around. Preferably, the motif shapes defined by the outer contours 33 and 71 of the release layer 22 and the functional layer structure 70 are similar, preferably identical, except that the release layer 22 has a larger outer contour 33 than the functional layer structure 70.

[0032] Fig. 5 Figure 1 shows a third embodiment of the safety element transfer material 10 in cross-section. The safety element transfer material 10 according to Fig. 5 differs from the security element transfer material 10 according to Fig. 4 by the fact that the release layer 22 comprises an inner contour 34 in addition to the outer contour 33. The release layer 22 can also comprise only the inner contour 34 (this is according to the invention) and otherwise, as shown in Fig. 3, are present over the entire surface (not shown, not claimed). The functional layer structure 70 is applied to the release layer 22 in such a partial area that the functional layer structure 70 extends beyond the inner contour 34 of the release layer 42. Preferably, the motif shape defined by the inner contour 34 of the release layer 22 corresponds to the motif shape defined by the outer contour 33 of the release layer 22, so that the release layer 22 forms a frame of constant width for the functional layer structure 70. The safety element transfer material 10 according to Fig. 5 is thinner than the security element transfer materials 10 according to Figures 3 and 4 .

[0033] Fig. 6 Figure 1 shows a fourth embodiment of the safety element transfer material 10 in cross-section. The safety element transfer material 10 according to Fig. 6 differs from the security element transfer material 10 according to Fig. 5only by a die-cut line 55. The die-cut line 55 runs either continuously or intermittently around the functional layer structure 70. For this purpose, the heat-seal varnish layer 50 and the release layer 22 are die-cut on the carrier film 16, e.g., by means of a mechanical die-cutting tool or laser. The die-cut line 55 is not essential for the subsequent removal of the carrier film 16 from the security element 12, because the contour of the security element 12 is essentially defined by the contour of the heat-seal varnish layer 50. The security element transfer materials 10 according to the Figures 3 and 4 They can also include such a punch line 55.

[0034] Fig. 7 The security element transfer material 10 is shown. Fig. 6The security element 12 is placed upside down on a banknote substrate 14 in cross-section. Pressure and increased temperature melt the heat-seal varnish layer 50, which then cools down again, causing the security element 12 to bond to the banknote substrate 14. Heating occurs either across the entire security element transfer material 10 or only in the area where the heat-seal varnish layer 50 is located. The heat-seal varnish layer 50 can be activated by UV radiation to cure it.

[0035] Fig. 8 shows the arrangement Fig. 7with the carrier film 16 detached from the security element 12 in cross-section. The detachment is made possible by the fact that the adhesion between the banknote substrate 14 and the heat-seal varnish layer 50 is stronger than the adhesion between the carrier film 16 and the functional layer structure 70, and stronger than the adhesion between the carrier film 16 and the release layer 22. The die-cutting line 55 ensures that the security element 12 has a clean and sharp outer contour.

[0036] In the embodiments described so far, the functional layer structure 70 is single-layered, e.g. a printing layer with interference layer pigments or liquid crystal pigments. Fig. 9 Figure 1 shows a fifth embodiment of the safety element transfer material 10 in cross-section. The safety element transfer material 10 according to Fig. 9The functional layer 70 differs from the previously described security element transfer materials 10 in that it is not a single layer, but a multi-layered one. The functional layer 70 comprises an embossed layer 80, e.g., an embossed lacquer layer, with a thin metallization layer 85 that follows the embossed structures of the embossed layer 80. The embossed layer 80 is applied such that it extends beyond the inner contour 34 of the release layer 22 without reaching the outer contour 33 of the release layer 22. The metallization layer 85 is applied over the entire surface, covering the embossed layer 80, the release layer 22, and the carrier film 16. The dimensions of the embossed structures of the embossed layer 80 can be so small that they act diffractively and produce a holographic effect, or they can be larger and form micromirrors with the metallization layer 85. The functional layer 70 according to Fig. 9This exhibits a tilting effect, where the visual appearance changes depending on the viewing angle. In contrast to Fig. 9 The metallization layer 85 can only be applied locally. This also applies to the embodiments described below. Figures 3 to 6 Instead of a single-layer functional layer structure, a multi-layer functional layer structure 70, in particular according to Fig. 9 , are planned.

[0037] Figures 10A to 10FFigure 1 schematically shows individual process stages in the production and application of a sixth embodiment of the security element transfer material 10 in cross-section. First, a carrier film 16 is provided, onto which a release layer 22 is applied partially or fully. In the illustrated embodiment, the release layer 22 simultaneously comprises an outer contour 33 and an inner contour 34, and thus is present only partially. When creating the functional layer structure 70, an embossing layer 80 is first applied such that it extends beyond the inner contour 34 of the release layer 22 only to the extent that the outer contour 33 of the release layer 22 extends beyond an outer contour 71 of the embossing layer 80 all around. A motif is embossed into the embossing layer 80, and a wash-color layer 82 is partially applied to the embossed motif.A metallization layer 85 is then applied such that it covers at least the embossing layer 80 and the wash-in color layer 82, and in this embodiment also the release layer 22 and the carrier film 16. After metallization, the wash-in color layer 82, along with the metallization layer 85 on top of it, is removed by washing, so that the remaining metallization layer 85 only partially covers the embossing layer 80 and forms at least one pattern or character, e.g., as negative text (clear text). Alternatively, instead of using the wash-in color layer 82, the metallization layer 85 can be partially demetallized by etching or laser treatment. To complete the security element transfer material 10, an optional primer 60 and a heat-seal varnish layer 50 are applied to the functional layer structure 70 as already described in connection with [reference to relevant section]. Fig. 6 mentioned. The safety element transfer material 10 produced in this way according to Fig. 10D differs from the security element transfer material 10 according to Fig. 9 only through the demetallized areas in the metallization layer 85. In the Figures 10E and 10F is shown how the security element transfer material 10 according to Fig. 10D first, the banknote substrate 14 is bonded to it, and finally the carrier film 16 is detached from the security element 12. The bonding step in Fig. 10E and the replacement work step in Fig. 10F are identical to those in Figures 7 and 8 mentioned work steps.

Claims

1. Method for producing a security element transfer material (10), comprising the steps of: - providing a carrier film (16); - applying a release layer (22) to the carrier film (16); - applying one or more mutually superposed layers over part of the area, to generate a functional layer structure (70) having an optically variable effect, in such a way that said structure lies completely on the release layer (22) by an outer contour (71); and - applying a layer (50) of adhesive to the functional layer structure (70) in such a way that it either exactly conceals the functional layer structure (70) or extends a distance beyond the outer contour (71) of the functional layer structure (70) until it reaches the release layer (22), wherein the release layer (22), in the step of applying the release layer (22), is applied only over part of the area, in such a way that an outer contour (33) of the release layer (22) extends all around beyond the outer contour (71) of the functional layer structure (70).

2. Method according to Claim 1, wherein the step of applying the functional layer structure (70) takes place in such a way that said structure either lies completely on the part-area release layer (22) or overhangs an inner contour (34) of the part-area release layer (22).

3. Method according to one of Claims 1 to 2, wherein the step of generating the functional layer structure (70) comprises applying an embossing layer (80) and embossing a motif into the embossing layer (80).

4. Method according to Claim 3, wherein the step of generating the functional layer structure (70) comprises applying a metallization layer (85) to the embossed motif.

5. Method according to Claim 4, comprising, before the application of the metallization layer (85), a step of applying a washable ink layer (82) to the embossing layer (80), in such a way that the washable ink layer (82) only partially covers the embossing layer (80), and, after the application of the metallization layer (85), a step of removing the washable ink layer (82) with the metallization layer (85) lying above it, so that the metallization layer (85) forms at least one pattern or sign.

6. Method according to any of Claims 1 to 5, comprising the step of: - punching through the layer (50) of adhesive and the release layer (22) on the carrier film (16) in such a way that either a continuous or an interrupted punching line (55) is formed.

7. Security element transfer material (10), comprising - a carrier film (16); - a release layer (22) applied to the carrier film (16); - a functional layer structure (70) which comprises one or more mutually superposed layers and has an optically variable effect and which lies completely on the release layer (22) by an outer contour (71); and a layer (50) of adhesive which is applied in a register-true manner on the functional layer structure (70) in such a way that it extends a distance beyond the outer contour (71) of the functional layer structure (70) until it reaches the release layer (22), wherein the release layer (22) is applied on the carrier film (16) only over part of the area and an outer contour (33) of the part-area release layer (22) extends all around beyond the outer contour (71) of the functional layer structure (70).

8. Security element transfer material according to Claim 7, wherein the functional layer structure (70) either lies completely on the part-area release layer (22) or overhangs an inner contour (34) of the part-area release layer (22).

9. Security element transfer material according to one of Claims 7 to 8, wherein the functional layer structure (70) comprises an embossing layer (80) in which a motif is embossed.

10. Security element transfer material according to Claim 9, wherein the functional layer structure (70) comprises a metallization layer (85) adjacent to the embossed motif.

11. Security element transfer material according to Claim 10, wherein the metallization layer (85) covers the embossing layer (80) only partially and forms at least one pattern or sign.

12. Security element transfer material according to any one of claims 7 to 11, wherein the layer (50) of adhesive and the release layer (22) comprise either a continuous or an interrupted punching line (55).

13. Method for producing a value article, for example a value document (1), comprising the steps of - producing a security element transfer material (10) by a method according to any of Claims 1 to 6 or providing a security element transfer material (10) according to any of Claims 7 to 12; - providing a substrate (14) of the value article; - bonding the security element transfer material (10) to the substrate (14) by means of the layer (50) of adhesive of the security element transfer material (10); and - detaching the carrier film (16) from the security element transfer material (10).

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