DE102008047641A1 - Security element transfer material with multilayer support - Google Patents

Security element transfer material with multilayer support

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Publication number
DE102008047641A1
DE102008047641A1 DE102008047641A DE102008047641A DE102008047641A1 DE 102008047641 A1 DE102008047641 A1 DE 102008047641A1 DE 102008047641 A DE102008047641 A DE 102008047641A DE 102008047641 A DE102008047641 A DE 102008047641A DE 102008047641 A1 DE102008047641 A1 DE 102008047641A1
Authority
DE
Germany
Prior art keywords
layer
security element
temporary carrier
transfer material
security
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE102008047641A
Other languages
German (de)
Inventor
André Gregarek
Winfried Dr. Hoffmüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Priority to DE102008047641A priority Critical patent/DE102008047641A1/en
Publication of DE102008047641A1 publication Critical patent/DE102008047641A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/465Associating two or more layers using chemicals or adhesives
    • B42D25/47Associating two or more layers using chemicals or adhesives using adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/328Diffraction gratings; Holograms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/351Translucent or partly translucent parts, e.g. windows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/355Security threads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364Liquid crystals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/455Associating two or more layers using heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/46Associating two or more layers using pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/162Decalcomanias with a transfer layer comprising indicia with definite outlines such as letters and with means facilitating the desired fitting to the permanent base
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17Dry transfer
    • B44C1/1712Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive

Abstract

The invention relates to a security element transfer material (1) comprising a security element laminate (15) and a temporary support (16). The security element laminate (15) comprises a plurality of layers, including at least one feature layer (2; 4), a permanent support substrate (3), and a peek layer (4), the viewing layer being the layer which after transfer of a Security element (10) to a valuable item (30) facing a viewer, and wherein the viewing layer may be identical to a feature layer or the permanent carrier substrate. The temporary carrier (16) is detachably connected to the viewing layer (4) of the security element laminate (15) and has a carrier layer composite consisting of a first (17) and a second (18) temporary carrier substrate, which are coated by means of an adhesive layer (19 ) are permanently bonded. The invention also relates to methods for producing the security element transfer material (1), to methods for transferring security elements (10) from the security element transfer material (1) to a valuable article (30) and to a valuable article (30) that is produced using the security element Transfer material (1) was secured.

Description

  • The The invention relates to a security element transfer material having a Security element layer composite comprising a variety of layers and a temporary carrier associated with the Security element layer composite is detachably connected, for transmission of security elements on a valuable asset, such as a security paper, a value document or a branded article, for authenticity assurance of the object of value. The invention also relates to methods for making the security element transfer material, method for transmitting a security element from the security element transfer material a valuable asset, and valuables that are being used of the security element transfer material against counterfeiting were secured.
  • Valuables, such as branded goods or documents of value, in particular banknotes, are often provided with security elements which allow verification of the authenticity of the object of value and at the same time serve as protection against unauthorized reproduction. Frequently, the security elements used for this purpose are not provided individually, but in the form of transfer belts with a plurality of security elements designed as transfer elements. Characteristic of transfer belts is that the security elements are prepared on a carrier layer, wherein the order of the layers of the transfer elements must be reversed, as it should be present later on the object to be protected. The carrier layer is typically removed from the layer structure of the security elements during transfer. On the opposite side of the carrier layer, the transfer tapes have an adhesive layer, usually of a heat-sealing adhesive, which melts during the transfer of the security elements and glued the security elements with the object to be secured. The transfer tape is placed on the object with the heat-sealable adhesive layer and pressed by means of a heated transfer punch or a transfer roller and transferred to the object in the contour of the heated transfer punch. Transfer elements, transfer ribbons and the transfer of transfer elements to target substrates are for example in EP 0 420 261 B1 and WO 2005/108108 A2 described.
  • Instead of the shaping of the transfer elements by the transfer punch during the transfer process The individual transfer elements can already be up prefabricated to the transfer ribbon in the desired outline shape available. The prefabrication of separate individual security elements is especially useful if the security elements have a layer structure have an exact cut through the entire layer construction during makes the transfer process difficult. This is usually then the case when the layer structure of the security element to be transmitted a carrier substrate, for example a plastic film, contains. Carrier substrates within the layer structure Security items are required when the security items need to be made very stable, for example, if they have to be self-supporting because they are closing a through opening in the object to be secured should be used. Depending on the item and size the opening to be closed can high demands on the stability of the security elements be put. For example, banknotes are during are exposed to high loads during their orbit, are tapped, Kinked and possibly exposed to wet. The security elements must be able to withstand these stresses as well like the banknote paper itself, otherwise there would be a risk that after a certain orbital period the through opening is exposed in the banknote.
  • Security elements whose layer construction comprises a stable carrier substrate, typically a plastic film, must be present on a transfer material as prefabricated individual elements, which means that the outline shapes of the security elements in the security element material must be precut beforehand. The pre-cutting can be carried out for example by means of a laser. This results in the problem that the cutting depth must be controlled very precisely, on the one hand to cut through the entire layer structure of the security element, on the other hand, the carrier material that is separated during the transfer, not to hurt. As support materials usually plastic films are used. Although plastic films have a high tear resistance, but a low tear resistance. When they are cut, it is almost unavoidable that the security element transfer material in the form of continuous material tears on valuables in some places during the transfer process of the security elements. It must also be taken into account that the layer structures to be cut or the carrier sheets which are not to be cut are materials with thicknesses in the micrometer range. The security element laminates typically have thicknesses in the range of about 20 μm to 30 μm, and the carrier foils typically have thicknesses in the range of 10 μm to 20 μm. With the precision required here, it is almost impossible to carry out a cutting process in such a way that, although the security element layer composite is completely severed, the cutting process is stopped in such a timely manner that the carrier foil is not cut anywhere becomes. Due to the partially cut support film, however, the security element transfer material loses stability, may even rupture, which is why accurate and smooth application of the security elements from the endless material to the products to be protected is no longer guaranteed.
  • task It is therefore the object of the present invention to overcome the disadvantages of the prior art avoid the technique and a security element transfer material in Provide shape of a continuous material in the security elements pre-cut in the desired outline shapes, and the precut elements then without risk of tearing of the carrier material to be secured to products can.
  • task In particular, it is the object of the present invention to provide such a security element transfer material in the form of a continuous material, wherein the security element layer composite a carrier substrate comprising the security elements gives sufficient stability to them as covering over through openings in valuables suitable too do.
  • The Task is solved by the security element transfer material according to the main claim. Other items of the invention are methods of making the security element transfer material, Method for transmitting a security element the security element transfer material on a valuable object, and a valuable item made using the security element transfer material secured with a security element, as in the sibling Claims are given. Special embodiments The invention are defined in the respective dependent claims specified.
  • The Security element transfer material according to the invention is typically a continuous material, usually a band with several a hundred meters in length and a width of a few Millimeters / centimeters up to several meters. The security element transfer material has a security element layer composite, i. H. the real thing Security element material, and a temporary carrier, d. H. the material on which the security elements are "stored", on.
  • The security element laminate has a plurality of layers, including a permanent support substrate, typically a plastic film, a feature layer, and a peek layer. The term "one (one, one, one)" in the present invention is to be understood as "at least one". If necessary, the security element layer composite can therefore also contain a plurality of permanent carrier substrates and / or a plurality of feature layers. The security element layer network usually contains several feature layers. A feature layer (or functional layer) is a layer that has visually detectable or machine detectable features. Examples which may be mentioned are metal layers, layers of metallic effect paints, layers with color pigments or fluorescent pigments, liquid crystal layers, coatings with a color shift effect, layers with matt structures, as described, for example, in US Pat WO 2007/107235 A1 Colored printed motif layers, layer combinations such as a color-shaded layer with a color shift effect, layers with magnetic pigments, etc. are not disclosed. The materials, layer sequences and types of application are not limited in any way and basically all materials and methods are applicable a person skilled in the field of security elements are known. The term "permanent" carrier substrate expresses that this carrier substrate is not removed during the transfer of the security element on an object to be secured, but rather is part of the security element layer composite and is transferred to the object to be secured. Since the security elements are to be used preferably for covering continuous openings, wherein the presence of an opening should remain recognizable, it is preferred to use transparent or translucent permanent carrier substrates. For example, films of polyester, such as polyethylene terephthalate, of polyethylene or polypropylene are suitable. Under the Blickschicht is to be understood the layer, which faces after the transmission of a security element on a valuable object to a viewer. The viewing layer may be identical to a feature layer or the permanent carrier substrate.
  • One suitable layer structure for the security element layer composite is merely exemplary and in no way limiting, that of the so-called L-LEAD (Longlasting Economical Anticopy Device) security elements of Giesecke & Devrient GmbH. Such security elements have a layer structure with numerous functional layers (Feature layers), including with a z. Holographic Security feature, pressure-receiving, protective and laminating layers, layers of paint, fluorescent imprints, etc. The L-LEAD security elements also have a permanent carrier substrate.
  • The security element laminate is connected to a temporary support either directly or by means of a release layer. The release layer is conventional and he facilitates the detachment of the security elements from the temporary carrier during the transfer process to a valuable item. The temporary support is located on the side of the security element layer composite facing an observer after the transmission of the security elements.
  • at the security element transfer material according to the invention the temporary carrier consists of a carrier layer composite. The carrier layer composite consists of at least two temporary carrier substrates, which are firmly connected by means of an adhesive layer. The term "temporary" carrier substrates expresses that these carrier substrates in contrast not to the "permanent" carrier substrate Part of the security elements are. Suitable materials for the temporary carrier substrates, as with the permanent carrier substrate, also plastic films, where it is of course immaterial, whether the slides are transparent or not. The slides should be as possible be thin, d. H. Thicknesses in the range up to approx. 20 μm have, but stable and preferably stretchy, what a precise transmission the security elements in the machine transfer process facilitated. Regarding the thickness of the temporary Carrier substrates is still to be noted that these in individual cases also be thicker than about 20 microns, namely z. B. when the temporary carrier substrate is formed by connecting two films or film structures.
  • The temporary carrier substrates of the carrier layer composite are insoluble with each other by means of an adhesive layer bonded. Insoluble in this context means that the bonding during the transfer process of the security elements or in any processing or treatment processes of the Security element transfer material can not be solved can. The transfer to valuables usually takes place by a process of heat sealing, which is why thermoplastic Adhesives are less suitable unless they have very high softening temperatures. Accordingly, z. B. Solvent-based 2-component PU adhesives whose temperature stability usually big enough. These adhesives are generally cross-linked but not radiation-curable. Conceivable but are also radiation-curing adhesives, in particular Adhesives caused by UV radiation or by electron radiation are curable. Details of the appropriate laminating adhesives are known in the art.
  • According to one preferred embodiments are "self-healing" adhesives used. Self-healing adhesives are adhesives, which harden only slowly, leaving a while the curing process damaged adhesive layer still reactive enough to damage in the course of to reverse the curing process do. Suitable adhesives tend to be in the class of cationic curing adhesives, found since the cationic Radiation curing a relatively slow process is still one after irradiation keeps running for some time.
  • The inventive design of the temporary Carrier as a carrier layer composite avoids that when cutting the outline of the security elements stability of the temporary carrier by cutting the temporary Carrier is impaired. A comparable one The result can not be achieved simply by having a single one Temporary carrier film designed accordingly thicker is because, as already mentioned, have plastic films a low tear resistance, d. H. if a slide even if it is slightly cut, rips They easily continue and possibly completely by. Different with the layer composite according to the invention: Even if one of the temporary carrier substrates is completely severed, remains the other temporary Carrier substrate (or possibly the other temporary carrier substrates) usually undamaged and therefore stable. The adhesive also forms an additional "buffer zone" between the temporary carrier substrates.
  • If a self-healing adhesive is used and the cutting of the Outlines of security elements performed at a time to which the adhesive has not yet fully cured is, cuts can be regressed in the adhesive layer become. The still plastic glue can even be cut into penetrate the temporary carrier substrate and fill them in whole or in part or at least as far stick that stability to the trimmed temporary Carrier substrates does not appreciably suffers.
  • The cutting of the outline shapes of the security elements is preferably carried out by means of a laser, as this allows the best precision to be achieved. However, the term "cutting" generally means all methods known to a person skilled in the art for delimiting the individual security elements from the endless material, for example punching. If a laser is used for cutting, additional measures are preferably taken which are suitable for preventing a deep cutting of the laser. Such measures are, for example, the provision of a laser protection layer between the first temporary carrier substrate and the adhesive layer and / or between the second temporary carrier substrate and the adhesive layer. For example, the temporary carrier substrates can be vapor-deposited with a laser-absorbing or a laser-reflecting material become. For steaming, or in general, to equip it with a laser protective layer, are at least the locations at which laser cuts are to be carried out later. An only partial coating may be useful to indemnify control lines for the control of the transfer process. For the cutting with a CO 2 laser, vapor deposition of at least one of the temporary carrier substrates with copper has proven to be most effective.
  • alternative or in addition, the adhesive between the temporary Carrier substrates with laser-absorbing or laser-reflecting Substances, for example, with metal pigments, be equipped, whereby the underlying temporary carrier substrate is protected.
  • Of the temporary carrier typically consists of one Carrier layer composite with two temporary carrier substrates, which are connected by means of an adhesive layer. The carrier layer composite can but also more than two temporary carrier substrates each comprising two temporary carrier substrates are connected by means of an adhesive layer. It is essential that the adhesive joints ensure that the temporary Carrier always as a composite layer holds together and also when transferring the security elements to valuables as a complete layer composite of the security elements can be separated. The more layers of the temporary Carrier has, the more complex is natural his production. At the same time, however, there is the possibility to provide a greater number of laser protective layers. Generally, however, there are two temporary carrier substrates perfectly adequate.
  • The Laminate structure of the temporary support, optionally with a self-healing adhesive and / or laser protection layer (s) and / or laser-absorbing or laser-reflecting substances in the adhesive layer, allows the temporary Overall, the wearer comparatively thin, therefore flexible and nevertheless extremely stable form. The layer thicknesses for the temporary carrier, d. H. the Carrier layer composite, are preferably in the range of 20 microns up to 40 μm.
  • The Production of the Security Element Transfer Material According to the Invention can be done in different ways. According to one Variant are the security element layer composite and the carrier layer composite each prepared separately and then glued together, wherein the production of the security element layer composite in conventional Way done. The temporary carrier is made by gluing the temporary carrier substrates by means of an adhesive layer. It is essential that the adhesives for bonding the temporary carrier substrates and for connecting the security element laminate to the temporary support be chosen so that the adhesive bond between the temporary carrier substrates under security element transmission conditions (typically heat sealing) can not be solved can, while the connection between security element layer network and temporary carrier is easily solved.
  • According to one Another variant is first the security element layer composite manufactured in a conventional manner and on the security element layer composite the temporary carrier built. This will be first on the viewing layer of the security element layer composite (the Layer, which later faces a viewer) first adhesive applied and a temporary carrier substrate glued to it. On the temporary carrier substrate another adhesive is applied and with this another glued temporary carrier substrate. Possibly may be other temporary carrier substrates glued on. It is essential that the adhesives are chosen that way be sure that the security element layer composite of the Carrier layer composite can be detached while the carrier layer composite always and in particular under security element transmission conditions remains firmly glued, as described in the previous variant. The first adhesive thus forms a so-called "release layer".
  • According to a further preferred embodiment, firstly the temporary carrier is produced and then the security element layer composite is constructed thereon, layer by layer. As already described for the preceding embodiments, the temporary carrier is produced by non-detachably bonding at least two, and preferably two temporary, carrier substrates to form a carrier layer composite. Then, the security element layer composite is constructed in a conventional manner, wherein first on one of the temporary carrier substrates, a release layer can be applied and then the first security element layer (the later facing the viewer viewing layer) is then applied. The release layer may also be omitted in this type of fabrication if the type of gaze layer in the security element transfer process permits easy separation from the temporary support. This is especially the case when the viewing layer is a lacquer layer with low adhesion to plastic films, as they are used for the temporary carrier substrates. Suitable lacquers are, for example, the embossing lacquers used for embossing diffraction structures. If necessary, the temporary carrier substrate to be coated can also be pre-treated to reduce adhesion. In general, it should be noted that the above embodiment against is preferred over the other production variants, in particular if the security element layer composite without a release layer is arranged on the temporary carrier substrate. As will be explained below, it is possible to dispense with a release layer between security element layer composite and temporary carrier, in particular when using one or more UV embossing lacquer layers as a sight layer; wherein the multilayer embossing lacquer details the EP 1 879 154 A2 can be taken (see also below).
  • It should be noted is still that in a preferred variant of the latter Process the second temporary carrier substrate and the first temporary carrier substrate first with each other be glued after the peek and other layers of the Security element subelement on the first temporary Carrier were arranged, making the second temporary Carrier substrate against thermal or radiation stresses, protected in particular in connection with the embossing of the embossing lacquer layer is. Furthermore, it is conceivable according to a further variant, the second temporary carrier substrate and the other layers of the security element subelement z. B. a permanent carrier substrate, essentially simultaneously.
  • According to a particularly preferred embodiment of the present invention, as the first security element layer on the temporary carrier, an embossing lacquer layer according to the method described in US Pat EP 1 879 154 A2 applied method described. In the method, the embossing lacquer layer is applied wet-to-wet in several steps, ie a first embossing lacquer layer is first applied to the temporary support, the first layer optionally partially, but not completely, cured, then a second embossing lacquer layer and optionally further embossing lacquer layers applied, then at least the top layer of the coating is embossed with a microstructure, and then cured the entire coating. Subsequently, the microstructure can be equipped with a suitable coating, for example metallized. With regard to the production of the embossing lacquer layer, the disclosure content of EP 1 879 154 A2 in this respect included in the present description.
  • The Formation of the embossing lacquer layer directly on the temporary Carrier without the interposition of a heat-activated Releasing layer avoids the problem that under certain circumstances an undefined cleavage of the release layer takes place. release layers can also cause problems when the sight layer after the transfer of the security element to one Valuable object further treated, for example, printed, should be. Overprinting of release layers or layers, have the residues of release layers, often leads to unclean print images.
  • On the layer of the security element layer composite disposed opposite to the viewing layer, a heat-seal adhesive layer is preferably applied for bonding to a valuable article. Suitable heat seal adhesives are known to a person skilled in the art. Preference is given to using heat-sealable adhesives which after physical drying or, in the case of hotmelt adhesives, after cooling, form substantially tack-free coatings at room temperature. Such heat seal adhesives are preferred because the security element transfer material is not usually used immediately after production, but is stored, which requires winding of the continuous material. A tack free hot-melt adhesive layer would result in blocking of the wound security-element transfer-material webs. Tack free is when security element transfer material pieces of about 100 cm 2 , stacked and weighted at 10 kg and stored for 72 hours at 40 ° C, are then easily separable without damage. With regard to the heat-seal adhesive layer, it is generally to be noted that this is advantageously applied only after the necessary steps have been performed for connecting the security element sub-element layers or the layers of the temporary carrier substrate. Since the joining of said layers usually takes place at elevated temperature and / or pressure, it makes sense to apply the heat- and / or pressure-sensitive hot-seal adhesive layer only after joining these layers.
  • The security element transfer material can now be stored temporarily or processed immediately. Next, in the security element layer composite, the later security elements are cut out, ie the outline shapes of the later security elements are cut into the security element layer composite, wherein the cuts preferably completely sever the entire security element layer composite. "Cutting" in this context includes any form of cutting, so for example, punching. The most precise and therefore most preferred type of cutting is cutting with a laser. Even when laser cutting, however, it can not be avoided that the temporary carrier is cut. However, if the temporary carrier is designed according to the invention as a layer composite, cutting the layer composite does not have the effects of impairing the stability of the composite layer as a whole. The cutting process can be controlled so precisely that at least that of the security element layer ver The farthest temporary carrier substrate remains intact and stably holds the temporary carrier. In addition, additional measures can be taken to stabilize the temporary carrier or to prevent deep cutting, such as the use of self-healing adhesives and the application of laser protective layers already described above. It is understood that when using a self-healing adhesive, the cutting of the security element outline should be done at a time when the adhesive has not yet fully cured.
  • To cutting the security feature outline shapes, and optionally after curing of the self-curing adhesive, which glued the temporary carrier substrates, is the excess security element laminate, d. H. the layered composite outside the outline shapes of the security elements, leaving only the security elements even on the temporary carrier, the Security elements on the temporary carrier So be spaced apart. The security element transfer material consists now of the temporary carrier with the designed as transfer elements security elements, d. H. the Layer order of the security elements is the reverse of the layer order, after the transfer of the security elements on the protected object. Removing the excess Security element laminar material is also referred to as "scarfing", since the excess security element layer composite material a coherent grid (with recesses in the form of security elements remaining on the temporary carrier) forms, which analogous to a separation winding of the temporary Carrier can be removed / removed.
  • The transferring the security elements of the security element transfer material on valuables, in particular a security paper or a document of value, preferably by heat sealing. Both the security element transfer material are preferred as well as the valuable object used as a band material. The band materials are merged in the appropriate position, for example in a nip, the security elements with the valuables stick together. The bonding preferably takes place by means of heat-seal adhesive, so at elevated temperature. After gluing the Security items with the valuables become the temporary Carrier as a complete carrier layer composite separated from the transmitted security elements, for example by separating winding. The security elements can be any Shapes and in themselves have any sizes. Preferred embodiments are labels, Folienpatche or others planar security elements.
  • The Dimensions will be significantly different from the protected item influenced. The security elements preferably have a thickness from 1 .mu.m to 100 .mu.m, more preferably a thickness from 2 μm to 50 μm. It refers to in the provision of value documents and security papers with security elements preferred because easy to handle thicknesses the security elements. By area, are usually formats of a few square millimeters to a few square centimeters or greater sense.
  • The Security element transfer material according to the invention is basically arbitrary for product security of goods Art suitable, in particular for the authenticity of Security papers and value documents. The term "security paper" is used an ineligible precursor to a value document understood, in addition to the security element more authenticity features can have. Security paper is usually as Endless material before and will be at a later date further processed. Value documents are in particular banknotes, certificates, checks, Identity documents, identity cards, credit cards and the like.
  • With The security element transfer material according to the invention is of particular advantage, has the security elements that are due to their permanent Carrier substrate have a special stability, used to make through openings in value documents to close. If the permanent carrier substrate the security elements is transparent, the functional layers (feature layers) be designed so that a viewer, at least in some areas can see through the security element.
  • An opening in a security paper or document of value may already be generated during the production of the security paper or document of value and then has a fibrous, irregular edge. Such an edge is characteristic of the openings already made during sheet formation and can not be subsequently produced. Details of the preparation of such irregular edges of the document WO 03/054297 A2 are removed, the disclosure of which is included in the present description. In other embodiments, the opening is produced only after papermaking by punching or cutting, for example by laser beam cutting.
  • The present invention will be further illustrated by means of figures. It should be noted that the figures did not measure are bar and not proportional. Furthermore, certain features disclosed in a figure are not only applicable in combination with the other features disclosed in the corresponding figure. On the contrary, features described in connection with a specific embodiment can each be combined independently with features from other embodiments or, more generally, can be used in the security element transfer material according to the invention.
  • It demonstrate:
  • 1 a cross section through a security element transfer material of the prior art,
  • 2 a view of a security element transfer material, as in 1 . 4a to 4d and 5 it is shown
  • 3 a plan view of a security document with a security element of a security element transfer material according to the invention,
  • 4a to 4d Process stages in the production of a security element transfer material according to the invention, each shown in cross section along the line AA 'of 2 , and
  • 5 a special embodiment of a security element transfer material according to the invention, shown in cross section along the line AA 'of 2 ,
  • In the same reference numerals designate the same or the same corresponding components.
  • 1 shows a security element transfer material of the prior art, shown in cross section along the line AA 'of 2 , The security element transfer material has a temporary carrier 16 on, as well as a security element layer composite 15 consisting of the feature layers 4 . 5 and 2 , the permanent carrier substrate 3 , an adhesive layer 6 , a primer layer 7 and a heat seal adhesive layer 8th , The feature layer 4 is the visual layer, ie after the transfer of security elements to valuables, it faces the viewers. The layer 4 Here is a partially applied liquid crystal layer, wherein the areas 4 ' the liquid crystal regions are. Another feature layer is a metallized hologram consisting of the embossing lacquer layer 5 and the on evaporated metal layer 2 , The metal layer 2 has recesses 2 ' which form a negative font. The metallization 2 is essentially only in the areas of the security element transfer material, which forms the later security elements provided. The security element layer composite 15 and the temporary carrier 16 are by means of a release layer 9 connected, which, as already mentioned, in a particularly advantageous embodiment can also be dispensed with.
  • The lines 20 and 20 ' indicate how the security element layer composite is cut to pre-cut the security elements in their outline shapes. As you can see, the cuts penetrate 20 and 20 ' in the plastic film, which is the temporary carrier 16 forms, a. The plastic film is destabilized by the cuts and can easily tear at the points of incisions with slight strains, as they are practically unavoidable in the course of the transfer process of the security elements.
  • 2 In plan view, a security element transfer material in which the security elements are pre-cut is not seen 1 shown as a cross section of a portion along the line AA ', or to a security element transfer material according to the invention 1 as in the 4a to 4d and 5 , each represented as a cross section of a portion along the line AA ', is.
  • 3 is a top view of a value document that is a security element 10 from a security element transfer material according to the invention 1 having. The 2 and 3 will be explained later in more detail.
  • 4a shows a cross section through a portion of a security element transfer material according to the invention 1 along the line AA 'of 2 , The illustration corresponds to the representation of the security element transfer material of the prior art of 1 , The structure of the security element layer composite 15 is the same as the one in 1 illustrated security element transfer material of the prior art. Also in the case of the security element transfer material according to the invention 1 is the security element layer composite 15 by means of a release layer 9 with a temporary carrier 16 connected, taking on the release layer 9 as already mentioned, can also be dispensed with in a particularly advantageous embodiment. However, in contrast to the security element transfer material of the prior art, this is not a single film, but rather a carrier layer composite composed of a first temporary carrier substrate 17 and a second temporary carrier substrate 18 by means of an adhesive layer 19 are permanently connected. The two temporary carrier substrates are plastic films, for example Foils made of PET, and the adhesive layer 19 consists of a cationic radiation-curable adhesive, for example UVCS0002 from XSYS. In addition, 2K PU systems are particularly suitable as adhesives. The security element layer composite 15 has a total thickness of about 25 microns, the PET films 17 and 18 each have a thickness of about 12 microns, and the adhesive layer 19 has a thickness of about 3 microns when dry.
  • The 4b to 4d each show the same view as 4a but in further processing states of the security element transfer material according to the invention 1 ,
  • 4b shows the security element transfer material, after using a CO 2 laser (wavelength 10,600 nm) the outline shapes 21 (please refer 2 ) of the later security elements 10 in the security element layer composite 15 were cut. The cuts are as lines 20 . 20 ' shown. The cut 20 not only cuts through the security element layer composite 15 , but also the first temporary carrier substrate 17 , and in the place 20 ' the cut penetrates far into the adhesive layer 19 in front.
  • When in the security element transfer material according to the invention 1 the outline shapes 21 were cut at a time to which the adhesive of the layer 19 was not completely cured, one reaches after a certain time in 4c illustrated state. How out 4c The incision is obvious 20 ' in the adhesive layer 19 completely cured. The cuts 20 and 20 ' in the temporary carrier substrate 17 are still clearly visible, but if the cutting of the outline shapes occurs early enough, the adhesive is the layer 19 still sufficiently fluid and reactive that it at least a little way into the cuts of the temporary carrier substrate 17 penetrates and glued the cuts.
  • Subsequently, the excess material of the security element layer composite 15 , in cross-sectional representations, the material between the cuts 20 and 20 ' , which removes, thereby, in the security element layer composite 15 Gaps 22 arise. This condition is in 4d shown. Both sides of the gap 22 there are security elements 10 , In the supervision representation of the 2 it is recognizable that the security elements 10 , in 2 represented as their outlines 21 , now "islands" on the temporary carrier 16 represent. The islands are surrounded by areas 22 in which there is no longer a security element layer composite material. 2 shows the security element transfer material according to the invention 1 as an endless belt, in which there is only one security element in the direction of the width. In practice, the endless belts may be wider and include a plurality of juxtaposed security elements.
  • 5 shows a specific embodiment of the security element transfer material according to the invention 1 , wherein a state is shown, which corresponds to the in 4b shown state corresponds. At the in 5 shown security element transfer material is the temporary carrier 16 from three temporary carrier substrates 17 ' . 17 ''' and 18 by means of adhesive layers 17 '' and 19 permanently connected to a carrier layer composite. The layers 17 ' . 17 '' and 17 ''' are each very thin, and the adhesive layer 17 '' contains copper in pigment form, which reflects laser beams to limit the depth of cut. As can be seen, at least the cut penetrates 20 ' not deep in the temporary carrier 16 one. The temporary carrier 16 remains sufficiently stable with three temporary carrier substrates as long as the outermost carrier substrate 18 not being cut.
  • Immediately on the temporary carrier 16 is an embossing lacquer layer 5 after the in EP 1 879 154 A2 described method by application of two embossing lacquer coats that were coined and cured, produced. As already related to 1 and 4 mentioned, the is in 5 illustrated immediate arrangement of the security element layer composite 15 on the temporary carrier 16 ie without a release layer, particularly preferred and also for the in 1 and 4 shown embodiments very advantageous. On the embossing lacquer layer 5 became the metallization 2 vapor deposited by physical vapor deposition. In the metallization 2 were washed by a washing method (such as disclosed in U.S. Pat WO 99/13157 and WO 97/23357 ) the recesses 2 ' generated. Then a layer of laminating adhesive 6 applied and a PET film as a permanent carrier substrate 3 glued to it. On the permanen carrier substrate 3 However, further layers have been built, the exact nature of which is irrelevant to the present invention, and the total reference numeral 11 are designated. Will after cutting the outline shapes 21 the security elements 10 the excess security element layered composite removed, again results in a supervision, as in 2 is shown.
  • 3 shows a banknote 30 which has a continuous opening 31 having. The continuous opening 31 is with a foil patch 10 which has a larger area than the through opening 31 , locked. The foil patch 10 is a security element made of a security element transfer material according to the invention 1 as it is in the 4a to 4d is shown. In addition, points the banknote 30 another security element, the security thread 40 , on. For applying the security element 10 on the banknote 30 become tracks with banknotes 30 (uncut) and security element transfer material webs with the security elements 10 , as in 4d represented, so merged, that in each case a security element 10 with a through opening 31 is congruent. This requires the security elements 10 in the security element transfer material 1 be prefabricated in the appropriate sizes and distances. Under elevated temperature and elevated pressure in each case a security element 10 on a banknote 30 glued. The hatched area 4 ' represents the scope of the security element 10 in which liquid crystal material is located. The areas 2 ' are the recesses in the metallization 2 by which a viewer is essentially guided by the security element 10 can look through.
  • 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
    • - EP 0420261 B1 [0002]
    • WO 2005/108108 A2 [0002]
    • - WO 2007/107235 A1 [0009]
    • - EP 1879154 A2 [0023, 0025, 0025, 0053]
    • WO 03/054297 A2 [0034]
    • WO 99/13157 [0053]
    • WO 97/23357 [0053]

Claims (15)

  1. Security element transfer material ( 1 ) - a security element layer composite ( 15 ) having a plurality of layers, including at least one feature layer ( 2 ; 4 ), a permanent carrier substrate ( 3 ) and a layer of sight ( 4 ), where the view layer is the layer that after the transmission of a security element ( 10 ) on a valuable object ( 30 facing a viewer, and wherein the viewing layer may be identical to a feature layer or the permanent carrier substrate, and - a temporary carrier ( 16 ), which with the sight layer ( 4 ) of the security element layer network ( 15 ) is detachably connected, characterized in that - the temporary carrier ( 16 ) has a carrier layer composite consisting of a first ( 17 ) and a second ( 18 ) temporary carrier substrate, which by means of an adhesive layer ( 19 ) are permanently bonded.
  2. Security element transfer material ( 1 ) according to claim 1, characterized in that the adhesive layer ( 19 ) consists of a self-healing adhesive, preferably of a cationic radiation-curing adhesive.
  3. Security element transfer material ( 1 ) according to claim 1 or 2, characterized in that outline forms ( 21 ) of the security elements ( 10 ) in the security element layer composite ( 15 ) are pre-cut, the cuts ( 20 . 20 ' ) optionally the first temporary carrier substrate ( 17 ) partially or completely and, if appropriate, the adhesive layer ( 19 ) partially or completely, into the second temporary carrier substrate ( 18 ) but do not penetrate, so the temporary carrier ( 16 ) can be separated as a complete carrier layer composite.
  4. Security element transfer material ( 1 ) according to claim 3, characterized in that from the security element layer composite ( 15 ) the composite layer material outside the outline shapes ( 21 ) of the security elements ( 10 ), so that the security element transfer material ( 1 ) Gaps ( 22 ) in the security element layer composite ( 15 ), while the temporary carrier ( 16 ) has no gaps.
  5. Security element transfer material ( 1 ) according to one of claims 1 to 4, characterized in that the viewing layer ( 4 ) is an embossing lacquer layer directly on the temporary support ( 16 ) is trained.
  6. Method for producing a security element transfer material ( 1 ), which is a security element layer composite ( 15 ) and a temporary carrier ( 16 ), comprising the following steps: - producing the temporary carrier ( 16 ) and - constructing the security element layer composite ( 15 ) on the temporary support ( 16 ), wherein the security element layer composite ( 15 ) has a multiplicity of layers, for which at least one feature layer ( 2 ; 4 ), a permanent carrier substrate ( 3 ) and a layer of sight ( 4 ), where the view layer is the layer that after the transmission of a security element ( 10 ) on a valuable object ( 30 ) facing an observer, and wherein the viewing layer can be identical to a feature layer or the permanent carrier substrate, characterized in that - the temporary carrier ( 16 ) is produced by permanent bonding of a first ( 17 ) and a second ( 18 ) temporary carrier substrate by means of an adhesive layer ( 19 ) to a carrier layer composite, and that - the security element layer composite ( 15 ) is constructed by detachably connecting the viewing layer ( 4 ) with the first temporary carrier substrate ( 17 ) and applying the further layers of the security element layer composite ( 15 ) on the with the first temporary carrier substrate ( 17 ) detachably connected sight layer ( 4 ).
  7. Method for producing a security element transfer material ( 1 ), which is a security element layer composite ( 15 ) and a temporary carrier ( 16 ) comprising the following steps: - producing the security element layer composite ( 15 ), wherein the security element layer composite ( 15 ) has a plurality of layers, including at least one feature layer ( 2 ; 4 ), a permanent carrier substrate ( 3 ) and a layer of sight ( 4 ), where the viewing layer is the layer which after transfer of a security element ( 10 ) on a valuable object ( 30 facing a viewer, and wherein the viewing layer may be identical to a feature layer or the permanent carrier substrate, - producing the temporary carrier ( 16 ) and - connecting the security element layer composite ( 15 ) and the temporary carrier ( 16 ), characterized in that - the temporary carrier ( 16 ) is produced by permanent bonding of a first ( 17 ) and a second ( 18 ) temporary carrier substrate by means of an adhesive layer ( 19 ) to a carrier layer composite, and that - connecting the security element layer composite ( 15 ) and the temporary carrier ( 16 ) by producing a detachable adhesive bond between the viewing layer ( 4 ) of the security element layer network ( 15 ) and the first temporary carrier substrate ( 17 ) of the temporary carrier ( 16 ) he follows.
  8. Method for producing a security element transfer material ( 1 ), which is a security element layer composite ( 15 ) and a temporary carrier ( 16 ) comprising the following steps: - producing the security element layer composite ( 15 ), wherein the security element layer composite has a plurality of layers, to which at least one feature layer ( 2 ; 4 ), a permanent carrier substrate ( 3 ) and a layer of sight ( 4 ), where the view layer is the layer that after the transmission of a security element ( 10 ) on a valuable object ( 30 facing an observer, and wherein the viewing layer may be identical to a feature layer or the permanent carrier substrate, and - constructing the temporary carrier (FIG. 16 ) on the security element layer composite ( 15 ), characterized in that the temporary carrier ( 16 ) is constructed by - releasably bonding a first temporary carrier substrate ( 17 ) with the sight layer ( 4 ) of the security element layer network ( 15 ), and - non-detachably bonding a second temporary carrier substrate to the first temporary carrier substrate ( 17 ) by means of an adhesive layer ( 19 ).
  9. Method according to claim 6, characterized in that the viewing layer ( 4 ) is formed by an embossing lacquer layer directly on the temporary support ( 16 ) is constructed.
  10. Method according to one of claims 6 to 9, characterized in that in the security element layer composite ( 15 ) Outline forms ( 21 ) of the security elements ( 10 ), wherein preferably for the production of the adhesive layer ( 19 ) of the temporary carrier ( 16 ) a self-healing adhesive is used and the outline forms ( 21 ) are cut while the adhesive is not yet cured.
  11. Method according to one of claims 6 to 10, characterized in that the composite layer material of the security element layer composite ( 15 ) outside the outline forms ( 21 ) of the security elements ( 10 ) from the security element transfer material ( 1 ) Will get removed.
  12. Method for transmitting a security element ( 10 ) from a security element transfer material ( 1 ) on a valuable object ( 30 ), such as a security paper, a value document or a branded article, comprising the following steps: - merging a security element transfer material ( 1 ) according to one of claims 1 to 5 or a security element transfer material produced according to one of claims 6 to 11 ( 1 ) and the valuables ( 30 ), - compressing the security element transfer material ( 1 ) in the area of the security element to be transmitted ( 10 ) and the valuables ( 30 ), optionally at elevated temperature, and - separating the temporary carrier ( 16 ) as a complete carrier layer composite of the transmitted security element ( 10 ).
  13. Valuable item ( 30 ), such as security paper or document of value, using a security element transfer material ( 1 ) according to one of claims 1 to 5 or a security element transfer material produced according to one of claims 6 to 11 ( 1 ) with a security element ( 10 ).
  14. Valuable item ( 30 ) according to claim 13, characterized in that the valuable item is a through opening ( 31 ) and the security element ( 10 ) is mounted so that it has the through opening ( 31 ) substantially closes.
  15. Valuable item ( 30 ) according to claim 14, characterized in that the valuable item is a banknote with a continuous opening ( 31 ), wherein the permanent carrier substrate ( 3 ) is preferably transparent or translucent and the feature layer ( 2 ) a negative writing ( 2 ' ) having.
DE102008047641A 2008-09-17 2008-09-17 Security element transfer material with multilayer support Withdrawn DE102008047641A1 (en)

Priority Applications (1)

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DE102008047641A DE102008047641A1 (en) 2008-09-17 2008-09-17 Security element transfer material with multilayer support

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DE102008047641A DE102008047641A1 (en) 2008-09-17 2008-09-17 Security element transfer material with multilayer support
EP09778554.7A EP2344343B1 (en) 2008-09-17 2009-09-16 Security element transfer material with multi-layered carrier
PCT/EP2009/006694 WO2010031543A1 (en) 2008-09-17 2009-09-16 Security element transfer material with multi-layered carrier

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DE102017001598A1 (en) 2017-02-17 2018-08-23 Giesecke+Devrient Currency Technology Gmbh Security element transfer material and method of making same
EP3517311A3 (en) * 2018-01-26 2019-08-28 Giesecke+Devrient Mobile Security GmbH Method for manufacturing a card body, card body, separating tool and apparatus for manufacturing a card body
DE102018000920A1 (en) 2018-02-05 2019-08-08 Giesecke+Devrient Currency Technology Gmbh A method of manufacturing a security element transfer material and security element transfer material
DE102018001379A1 (en) 2018-02-21 2019-08-22 Giesecke+Devrient Currency Technology Gmbh transfer materials
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