DE102018000920A1 - A method of manufacturing a security element transfer material and security element transfer material - Google Patents

Abstract

The invention relates to a method for producing a security element transfer material comprising a security element layer composite with security elements to be transferred, namely transfer elements, and a temporary carrier, comprising a) the step of providing a security element layer composite on the temporary carrier in the form of an endless belt b) the step of providing the security element laminate with incised contours so as to produce a longitudinally repeating sequence of spaced-apart transfer element groups and the transfer element groups each through a transverse direction formed parallel and adjacent to each other plurality of transfer elements and each of the individual transfer element groups of an upper and a lower, each extending in the transverse, einnitte c) the de-meshing step wherein the excess material of the security element laminate is removed outside the transfer element groups; d) the step of cutting the obtained endless belt one of the plurality of corresponding number of endless belts with transfer elements, in which only one transfer element is located in the transverse direction

Description

The invention relates to a security element transfer material having a security element layer composite, which has a plurality of layers, and a temporary support, which is detachably connected to the security element layer composite, for transferring security elements to a valuable article, such as a security paper, a value document or a brand name, to authenticate the valuables. The invention also relates to methods of making the security element transfer material.

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, each designed as a transfer element. 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 with the heat-seal adhesive layer on the object and pressed by means of a heated transfer punch or a transfer roller and transferred in the outline of the heated transfer punch on the object. Transfer elements, transfer belts and the transfer of transfer elements to target substrates are for example in EP 0 420 261 B1 and in the WO 2005/108108 A2 described.

Instead of shaping the transfer elements by the transfer punch during the transfer process, the individual transfer elements can already be prefabricated in the desired outline shape on the transfer belt. The prefabrication of separate individual security elements is particularly useful if the security elements have a layer structure which makes exact separation of the entire layer structure during the transfer process difficult. This is usually the case when the layer structure of the security element to be transmitted contains a carrier substrate, for example a plastic film. Support substrates within the layer construction of security elements are required when the security elements have to be made particularly stable, for example when they have to be self-supporting, because they are to be used for closing a through opening in the object to be secured. Depending on the object and size of the opening to be closed, high demands can be placed on the stability of the security elements. Banknotes, for example, are exposed to high stresses during their orbit, are tapped, kinked and may be exposed to moisture. The security elements must be able to withstand these stresses as well as the banknote paper itself, since otherwise there would be the danger that after a certain circulation time the through opening in the banknote would be exposed.

In the prior art it is known, for example, to provide a break-out of a patch from a transfer film composite by means of correspondingly shaped sealing sheets with punched lines as predetermined breaking points (see, for example, US Pat WO 2013/190048 A1 ).

Furthermore, it is known in the prior art, with a sufficiently stable composite film, to punch in the patch shape before the application and to de-mesh the films (see, for example, US Pat WO 2010/031543 A1 ). The 5 illustrates that of the prior art WO 2010/031543 A1 well-known procedure, in which the reference number 51 designated transfer film composite with a punch, the patch shapes or patch outlines 52 be punched. After that, the step of weeding out takes place 56 ie the part of the transfer ribbon composite that is outside the patch outline 52 lies, is replaced. In this way, first, as an intermediate product, a broad transfer belt 53 receive on which the individual transfer elements 54 prefabricated in the desired outline shape. The broad transfer band 53 then becomes single, narrow transfer bands, namely strips 55 , cut, taking along the width of the strip 55 one patch each 54 is arranged. The Stripes 55 can then be wound up on spools. Later, in the course of producing a value document, the individual transfer patches can be separated from the strips wound on the bobbins 55 be applied or applied to the respective value document substrates.

A major disadvantage of in the 5 The method according to the prior art shown can be seen in that the weeding 56 is associated with a relatively high loss of material. The grid to be removed must have sufficient stability, ie it requires a certain minimum width between the resulting transfer elements or transfer patches, so that the grid in step does not break the wecking. For example, it may be necessary for the grid to have, for example, a minimum width of 3 mm between the resulting transfer elements. For example, if the transfer elements are 15 mm wide, the result is a strip width of 18 mm, of which only 15 mm are actually used. The 3 mm for the grid cause undesirable costs because in this example 3/18 = 1/6 = 16.7% of the produced film must be sacrificed for the grid.

The object of the present invention is therefore to avoid the disadvantages of the prior art and to find a way to reduce costs in the provision of a security element transfer material in the form of a continuous material. In particular, should be obtained from the same amount of film ultimately a larger amount of transfer elements.

The object is achieved by the method for producing a security element transfer material and by the security element transfer material obtainable therefrom according to the independent claims. Specific embodiments of the invention are set forth in the respective dependent claims.

Summary of the invention

1. 1. (First aspect of the invention) A method of producing a security element transfer material comprising a security element layer composite with security elements to be transferred, namely transfer elements, and a temporary carrier
   1. a) the step of providing a security element layer composite on the temporary support in the form of an endless belt having a longitudinal direction along the belt and a transverse direction perpendicular thereto;
   2. b) the step of providing the security element layer composite with cut-out contours so that a longitudinally repeating sequence of spaced-apart transfer element groups are generated and the transfer element groups are each formed by a transversely parallel and adjacent plurality of transfer elements, and each of the individual transfer element groups is surrounded by an upper and a lower transversely extending incised outline, respectively, and two lateral, longitudinally extending, incised outlines;
   3. c) the step of derangement, wherein the excess material of the security element layer composite outside the transfer element groups is removed;
   4. d) the step of cutting the resulting endless belt to one of the plurality of corresponding number of endless belts with transfer elements, wherein in the transverse direction only one transfer element is located at a time.
2. 2. (Preferred embodiment) Procedure according to clause 1 in which, in step c), the excess material of the security element layer composite outside the transfer element groups is formed, on the one hand, in the form of strips running along the transverse direction, which are arranged between the longitudinally repeating sequence of mutually spaced transfer element groups, and, on the other hand, in FIG Form of two lateral, along the longitudinal direction extending strip is formed.
3. 3. (Preferred embodiment) Procedure according to clause 1 or 2 , in which
   • the security element laminate has a plurality of layers, including at least one feature layer, optionally a permanent support substrate, and a peek, wherein the peek is the layer facing a viewer after the transfer of a security element to a valuable article, and wherein the Blickschicht may be identical to the feature layer or the optional permanent carrier substrate; and
   • - The temporary carrier is detachably connected to the viewing layer of the security element layer composite.
4. 4. (Preferred Embodiment) Method according to one of the clauses 1 to 3 wherein the temporary carrier comprises a carrier layer composite, which consists of a first and a second temporary carrier substrate, which are permanently bonded by means of an adhesive layer.
5. 5. (Preferred Embodiment) Method according to one of the clauses 1 to 3 where the incisions forming the incised contour lines may partially penetrate into the temporary carrier.
6. 6. (Preferred embodiment) Procedure according to clause 4 in which the incisions forming the incised contour lines optionally partially or completely sever the first temporary carrier substrate and possibly partially or completely sever the adhesive layer, but do not penetrate into the second temporary carrier substrate, so that the temporary carrier can be separated off as a complete carrier layer composite.
7. 7. (Preferred Embodiment) Method according to one of the clauses 1 to 6 wherein the feature layer comprises an embossing lacquer layer optionally provided with one or more of the following layers, namely a metal layer, a metallic effect color-based layer, a color pigment or fluorescent pigment-based layer, a liquid crystal layer, a color-shift effect layer, which in particular has a reflector / dielectric / absorber-three-layer structure, a layer with matt structures, as described for example in the WO 2007/107235 A1 is disclosed, or a printed colored motif layer.
8. 8. (Preferred embodiment) Procedure according to clause 7 , wherein the embossing lacquer layer is provided with a relief structure, in particular a relief structure with microstructures and / or nanostructures.
9. 9. (Preferred Embodiment) Method according to one of the clauses 1 to 8th in which, in step c), namely the step of weeding, in which the excess material of the security element layer composite outside the transfer element groups is removed, weeding by means of a preceding registration of a separate film onto the areas of the security element layer composite to be removed takes place, wherein the separate film in the non-removable areas of the security element layer composite, namely to be generated transfer element areas, recesses.
10. 10. (Preferred embodiment) Procedure according to clause 9 , wherein the dimensions of the recesses of the separate film are slightly larger than the dimensions of the non-removable areas of the security element layer composite, namely the transfer element areas to be created, are selected, so that when Entgittern remains of remnants of the separate film on the transfer elements to be generated is avoided.
11. 11. (Preferred Embodiment) Method according to one of the clauses 1 to 8th in which, in step c), namely the step of weeding, in which the excess material of the security element layer composite outside the transfer element groups is removed, the weeding by means of a preceding, register-accurate lamination of a separate, full-surface, ie no recesses having, on the security element layer composite takes place, wherein the separate film is provided only in the areas to be removed of the security element layer composite with adhesive.
12. 12. (Preferred embodiment) Procedure according to clause 11 wherein the dimensions of the non-adhesive areas of the separate film are chosen to be slightly larger than the dimensions of the non-removable areas of the security element laminate, namely the transfer element areas to be created, thus leaving residues of the separate film in the weeding the transfer elements to be generated is avoided.
13. 13. (Preferred Embodiment) Method according to one of the clauses 9 to 12 , wherein the weeding out takes place by means of a separating winding, wherein the laminated on the security element layer composite, separate film at an angle α in a range of 5 ° to 85 °, preferably in a range of 15 ° to 75 °, more preferably in one Range of 30 ° to 60 ° and particularly preferably at 45 ° relative to the transverse direction of the endless belt is wound in a split, so as to avoid tearing of the areas to be removed of the security element layer composite.
14. 14. (Preferred Embodiment) Method according to one of the clauses 1 to 13 wherein the transfer element groups generated in step b), each formed by a transversely parallel and contiguous plurality of transfer elements, are formed substantially transversely or diagonally, eg at an angle of up to about 45 ° with respect to the transverse direction are.
15. 15. (Second aspect of the invention) A security element transfer material comprising a security element layer composite with security elements to be transferred, namely transfer elements, and a temporary support obtainable by the method according to one of the clauses 1 to 14 ,
16. 16. (Preferred Embodiment) Security element transfer material according to clause 15 wherein the security element transfer material is an endless belt having transfer elements with only one transfer element in the transverse direction, the transfer elements being cut off laterally flush with the temporary carrier.
17. 17. (Preferred Embodiment) Security element transfer material according to clause 15 or 16 in which, from the security element layer composite, the layer composite material is removed outside the outline shapes of the transfer elements such that the security element transfer material has gaps in the security element layer composite, while the temporary carrier has no gaps.

Detailed description of the invention

1. a) den Schritt des Bereitstellens eines Sicherheitselement-Schichtverbunds auf dem temporären Träger in Form eines Endlosbandes mit einer Längsrichtung entlang des Bandes und einer dazu senkrechten Querrichtung;
2. b) den Schritt des Versehens des Sicherheitselement-Schichtverbunds mit eingeschnittenen Umrisslinien, sodass eine sich in Längsrichtung wiederholende Folge zueinander beabstandet vorliegender Transferelement-Gruppen erzeugt werden und die Transferelement-Gruppen jeweils durch eine in Querrichtung parallel und aneinander angrenzend vorliegende Mehrzahl an Transferelementen gebildet sind und jede der einzelnen Transferelement-Gruppen von einer oberen und einer unteren, jeweils in Querrichtung verlaufenden, eingeschnittenen Umrisslinie, und zwei seitlichen, in Längsrichtung verlaufenden, eingeschnittenen Umrisslinien umgeben sind;
3. c) den Schritt des Entgitterns, bei dem das überschüssige Material des Sicherheitselement-Schichtverbunds außerhalb der Transferelement-Gruppen entfernt wird;
4. d) den Schritt des Schneidens des erhaltenen Endlosbandes zu einer der Mehrzahl entsprechenden Anzahl an Endlosbändern mit Transferelementen, bei denen sich in Querrichtung jeweils nur ein Transferelement befindet.

The method according to the invention for producing a security element transfer material which has a security element layer composite with security elements to be transferred, namely transfer elements, and a temporary carrier comprises:

1. a) the step of providing a security element layer composite on the temporary support in the form of an endless belt having a longitudinal direction along the belt and a transverse direction perpendicular thereto;
2. b) the step of providing the security element layer composite with cut-out contours so that a longitudinally repeating sequence of spaced-apart transfer element groups are generated and the transfer element groups are each formed by a transversely parallel and adjacent plurality of transfer elements, and each of the individual transfer element groups is surrounded by an upper and a lower transversely extending incised outline, respectively, and two lateral, longitudinally extending, incised outlines;
3. c) the step of derangement, wherein the excess material of the security element layer composite outside the transfer element groups is removed;
4. d) the step of cutting the resulting endless belt to one of the plurality of corresponding number of endless belts with transfer elements, wherein in the transverse direction only one transfer element is located at a time.

The removal of the excess security-element laminar material is referred to herein as "weeding," also as "scarfing," because the excess security-element laminar material forms a continuous grid (with recesses in the form of the security elements remaining on the temporary carrier) which is analogous to a separation coil can be deducted from the temporary carrier or removed or removed.

The security element transfer material according to the invention is typically a continuous material, usually a belt several hundred meters in length and a width of a few millimeters / centimeter to several meters. The security element transfer material has a security element layer composite, i. the actual security element material, and a temporary carrier, i. the material on which the security elements are "stored" on.

The security element laminate has a plurality of layers, including, optionally, 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 also contain a plurality of optional permanent carrier substrates and / or multiple 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 can be used, for example, 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.

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 facilitates the detachment of the security elements from the temporary carrier during the transfer process to a valuable item. The temporary carrier is located on the side of the security element Layer composite, which faces after the transmission of the security elements to a viewer.

The temporary carrier may in particular consist of a carrier layer composite, as in the WO 2010 / 031543A1 is described.

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.

It is preferred that the resulting transfer elements or patches be provided with a heat seal adhesive and applied to a value document substrate, e.g., under pressure and at a temperature above 50 ° C, often above 90 ° C or even above 110 ° C. To apply a banknote substrate (e.g., paper, a polymer substrate or a paper / foil / paper composite or foil / paper / foil composite). Alternatively or additionally, the adhesive for bonding to the substrate may be UV-curing. The application can be carried out as a sheet application or roll-to-roll.

The security element transfer material according to the invention is basically suitable for product security of goods of any kind, in particular for the authenticity assurance of security papers and value documents. The term "security paper" is understood to mean a precursor that can not yet be processed to a value document, which besides the security element can have further authenticity features. Security paper is usually available as a continuous material and will be processed at a later date. Value documents are in particular banknotes, certificates, checks, identity documents, identity cards, credit cards and the like.

With particular advantage, the security element transfer material according to the invention, which has security elements which have a particular stability due to their optional permanent carrier substrate, is used to close through openings in value documents. If the permanent carrier substrate of the security elements is transparent, the functional layers (feature layers) can be designed such that a viewer can see through the security element at least in some areas.

The present invention will be further illustrated by means of figures. It should be noted that the figures are not true to scale and not proportions. 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.

• 1 einen Querschnitt durch ein Sicherheitselement-Transfermaterial des Standes der Technik,
• 2 eine Aufsicht auf ein Sicherheitselement-Transfermaterial, wie es entweder in 1 oder in 4a bis 4d dargestellt ist,
• 3 eine Aufsicht auf ein Wertdokument mit einem Sicherheitselement aus einem Sicherheitselement-Transfermaterial,
• 4a bis 4d Verfahrensstadien bei der Herstellung eines weiteren Sicherheitselement-Transfermaterials, jeweils dargestellt im Querschnitt entlang der Linie A-A' von 2,
• 5 die Herstellung eines Sicherheitselement-Transfermaterials gemäß dem Stand der Technik;
• 6 eine erfindungsgemäße Herstellung eines Sicherheitselement-Transfermaterials;
• 7 bis 9 ein erfindungsgemäßes Beispiel für das Vorgehen beim Entgittern;
• 10 bis 12 ein weiteres erfindungsgemäßes Beispiel für das Vorgehen beim Entgittern;
• 13 ein Ausführungsbeispiel für eine vorteilhafte Trennwicklung;
• 14 bis 16 weitere Ausführungsbeispiel für temporäre Träger mit darauf aufgebrachten Transferelementen.

Show it:

• 1 a cross section through a security element transfer material of the prior art,
• 2 a view of a security element transfer material, as it is either in 1 or in 4a to 4d is shown
• 3 a plan view of a security document with a security element of a security element transfer material,
• 4a to 4d Process stages in the production of another security element transfer material, each shown in cross section along the line A-A ' from 2 .
• 5 the production of a security element transfer material according to the prior art;
• 6 an inventive production of a security element transfer material;
• 7 to 9 an inventive example of the procedure for weeding;
• 10 to 12 another example according to the invention for the procedure of weeding;
• 13 an embodiment of an advantageous separation winding;
• 14 to 16 further embodiment of temporary carrier with transfer elements applied thereon.

In the figures, like reference numerals designate like or corresponding parts.

1 shows a security element transfer material of the prior art, shown in cross section along the line A-A ' from 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 the security elements or transfer elements to valuables, it is the Facing 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 vapor-deposited 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.

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 represents a security element transfer material in which the security elements are precut, in a plan view. This may be a security element transfer material 1 of the prior art, as in 1 as a cross section of a partial area along the line A-A ' or another security element transfer material 1 of the prior art, as in the 4a to 4d , each as a cross section of a subsection along the line A-A ' represented, act.

3 is a top view of a value document that is a security element 10 from a security element transfer material 1 having. The 2 and 3 will be explained later in more detail.

4a shows a cross section through a portion of another security element transfer material 1 of the prior art along the line A-A ' from 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 the 1 illustrated security element transfer material of the prior art. Also with the further security element- 1 is the security element layer composite 15 by means of a release layer 9 with a temporary carrier 16 connected. In contrast to the security element transfer material according to the 1 However, this is not a single film, but a carrier layer composite 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 films 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 other processing states of the security element transfer material 1 ,

4b shows the security element transfer material, after using a CO ₂ laser (wavelength 10600 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 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 ' , removed (so-called "weeding"), resulting 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 or transfer elements 10 , In the supervision representation of the 2 it can be seen that the security elements or transfer 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 security element Laminated composite is more. 2 shows the security element transfer material 1 as an endless belt, in which there is only one security element in the direction of the width.

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 from a security element transfer material 1 , as it is eg in the 4a to 4d is shown. In addition, the banknote points 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 or transfer 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.

5 illustrates those in the prior art (see for example the WO 2010/031543 A1 ) known generation of an example in the 2 shown security element transfer material in the form of an endless belt 55 in which only one security element or transfer element (also referred to herein as transfer patch) 54 is located in the direction of the width. In the course of the production of the endless band 55 one goes from the broader endless band 51 out in which the patch shapes 52 the later, 6-fold juxtaposed security elements are punched. The endless band 51 corresponds to eg in the 1 or in the 4c shown, cut security element layer composite, in which the security elements are pre-cut in their outline shapes. Subsequently, the step of weeding out takes place (see the block arrow 56 ), in which the material between the cuts 20 and 20 ' , is removed, creating gaps in the security element layer composite (this state is in 4d shown). On both sides of the gap are security elements or transfer elements 54 , In the supervision representation of the 5 it is recognizable that the security elements 54 now represent islands on the temporary carrier. The islands are surrounded by areas where there is no longer any security element laminar material. Then the wide endless band 53 namely, the temporary carrier on which six rows of security elements or transfer elements 54 are arranged parallel to single, strip-shaped endless belts 55 cut (see the block arrow 57 ). The strip-shaped endless bands 55 are then wound up on spools. The on the wound up strips 55 arranged transfer elements 54 can later from the strips 55 eg be applied to banknote paper.

In the in the 5 shown procedure according to the prior art is the weeding 56 associated with a relatively high loss of material. The grid (namely that in the 1 or the 4c shown, between the cuts 20 and 20 ' material to be removed) must have a sufficient stability and a certain minimum width between the security elements or transfer elements, so that it is used during weeding 56 do not break.

On the basis of the following exemplary embodiments according to the invention, possibilities for reducing costs in the provision of anti-lattice security elements or transfer elements are shown. The aim is to obtain from the same amount of film ultimately a larger amount of security elements or transfer elements.

• - einem Stanzen oder Schneiden zumindest der oberen und unteren Umrisslinien der entstehenden Transferelemente;
• - einem Entgittern, wobei mindestens zwei Transferelemente quer zur Laufrichtung der Endlosfolie (also in Querrichtung) durch einen nicht entgitterten Bereich verbunden bleiben;
• - einem Schneiden, insbesondere einem Feinschnitt, bei dem zumindest die genannten zwei Transferelemente in Querrichtung durchtrennt werden und optional zusammen mit ihrer darunter befindlichen temporären Trägerfolie auf verschiedenen Spulen aufgewickelt werden.

According to the present invention, the manufacture of a transfer patch film is based on

• - Punching or cutting at least the upper and lower contour lines of the resulting transfer elements;
• - A weighing, wherein at least two transfer elements remain connected transversely to the direction of the endless film (ie in the transverse direction) by a non-entailed area;
• - A cutting, in particular a fine cut, in which at least said two transfer elements are severed in the transverse direction and optionally wound together with their underlying temporary carrier film on different coils.

The above procedure is based on the 6 described in more detail. The 6 illustrates those in the prior art (see for example the WO 2010/031543 A1 ) known generation of an example in the 2 shown security element transfer material in the form of an endless belt 65 in which in the direction of the width only one security element or transfer element (also referred to herein as transfer patch) 64 ' located. In the course of the production of the endless band 65 one goes from the broader endless band 61 out in which the patch shapes 62 later, next to each other arranged and initially in non-incised state interconnected security elements or transfer elements are punched, namely in the form of an upper and a lower outline and two lateral outlines, wherein the four outlines surround the transfer element group (the outlines are shown in dashed lines). Subsequently, the step of weeding out takes place (see the block arrow 66 ), in which the transfer elements are de-meshed, as it were strip-wise, substantially transversely to the running direction of the endless belt, wherein at least two of the later transfer elements remain connected to one another in the non-incised state in the transverse direction (see in FIGS 6 , Middle, on a temporary carrier 63 arranged transfer element group 64 ). Then the wide endless band 63 , namely the temporary carrier on which at least two security elements or transfer elements 64 are arranged parallel in a non-cut, interconnected state, to individual, strip-shaped endless belts 65 cut (see the block arrow 67 ). The strip-shaped endless bands 65 are then wound up on spools. The on the wound up strips 65 arranged transfer elements 64 ' can later from the strips 65 eg be applied to banknote paper.

In the invention, in the 6 The procedure shown is the weeding 66 associated with a relatively small loss of material.

The transfer patch film obtainable by the process according to the invention 65 is in particular such that the transfer elements or Transferpatche 64 ' are present in the transverse direction flush with the temporary carrier film cut to the exact register and in the running direction of the endless foil the areas between the transfer elements 64 ' are latticed.

The transfer elements 64 ' preferably have at least one optically variable element.

The inventive transfer element production can largely according to the prior art, see for example the WO 2010/031543 A1 , known methods take place. The security element layer composite arranged on the temporary carrier may in particular have optically variable security features, such as embossed holograms, volume holograms, metallic and / or color-changeable coatings, micromirror arrangements and / or subwavelength structures, in particular subwavelength gratings for producing structural colors or moth eyes.

It can also be provided to provide microlenses alone or in combination with associated microimages, for example for the production of a so-called moiré magnifier, on a transfer element according to the invention. Exemplary slide assemblies are eg from the WO 2017/035437 A1 known.

The transfer elements obtainable according to the invention do not necessarily have to be a permanent stabilizing film (see, for example, the permanent carrier substrate 3 in the 1 . 4a-4d ), ie the security element layer composite merely optionally includes a permanent carrier substrate. A permanent stabilizing film may be advantageous, because it gives a certain degree of stability to tearing off a layer to be peeled off when weeding it out. On the remaining transfer elements, however, such a permanent stabilizing film is associated with disadvantages. On the one hand, the thickness of the transfer elements increases, which may be undesirable when used on banknotes, for example. On the other hand, in the case of a security patch applied to a banknote, in view of protection against manipulation and forgery, only a slight stability against tearing of the security patch in the event of a manipulative detachment from the banknote may be desired.

• Im Zuge der Herstellung des in der 6 gezeigten Endlosbandes 65 geht man von dem breiteren Endlosband 61 aus, in dem die Patchformen 62 der späteren, nebeneinander angeordneten und zunächst in nicht-eingeschnittenem Zustand miteinander verbundenen Sicherheitselemente bzw. Transferelemente eingestanzt sind, nämlich in Form einer oberen und
• einer unteren Umrisslinie und zweier seitlicher Umrisslinien, wobei die vier Umrisslinien die Transferelement-Gruppe umgeben (die Umrisslinien sind gestrichelt dargestellt). Weiterhin wird eine separate, stabilisierende Folie 71 bereitgestellt, die in den nicht zu entfernenden Bereichen des Sicherheitselement-Schichtverbunds, nämlich den zu erzeugenden Transferelement-Bereichen, Aussparungen aufweist. Die separate, stabilisierende Folie 71 wird dann auf das Endlosband 61 registergenau aufkaschiert. Das Aufkaschieren kann insbesondere mittels einer auf der separaten, stabilisierenden Folie 71 befindlichen Klebstoffschicht erfolgen.

According to an advantageous embodiment of the invention, in the step of weeding off, a separate, stabilizing film is produced 71 applied only in the areas that are later latticed. This procedure is based on the 7 explained in more detail:

• In the course of the production of in the 6 shown endless belt 65 one goes from the broader endless band 61 out in which the patch shapes 62 the later, juxtaposed and initially in non-incised condition interconnected security elements or transfer elements are punched, namely in the form of an upper and
• a bottom outline and two side outlines, with the four outlines surrounding the transfer element group (the outlines are shown in dashed lines). Furthermore, a separate, stabilizing film 71 provided in the non-removable areas of the Security element layer composite, namely to be generated transfer element areas, recesses. The separate, stabilizing foil 71 will then be on the endless belt 61 laminated in register. The lamination can in particular by means of a on the separate, stabilizing film 71 take place adhesive layer.

According to a preferred variant, the dimensions of the recesses of the separate film 71 slightly larger than the dimensions of the non-removable areas of the security element layer composite, namely the transfer element areas to be created, selected so that the Entgittern a retention of remnants of the separate film (eg adhesive residues) is avoided at the transfer elements to be generated. In the 8th is the one from the endless band 61 and a separate, stabilizing film 71 produced laminated composite 72 shown, wherein the dimensions of the recesses of the separate film 71 is slightly larger than the dimensions of the non-removable areas of the security element layer composite, namely the transfer element areas to be generated are selected.

When wecking in the 8th laminating composite shown 72 becomes the stabilizing film 71 removed and with it the underlying areas of the security element layer composite outside the desired patch shapes. In the course of de-lattice, the transfer elements are, as it were, de-meshed in strips transversely to the running direction of the endless belt, wherein at least two of the later transfer elements remain connected to one another in a non-incised state in the transverse direction (see in FIGS 9 , left, on the temporary carrier 63 arranged transfer element groups 64 ). Then the wide endless band 63 namely, the temporary carrier on which at least two security elements or transfer elements are parallel in an un-cut, interconnected state 64 are arranged, to individual, strip-shaped endless belts 65 cut (see the block arrow 67 ). The strip-shaped endless bands 65 are then wound up on spools. The on the wound up strips 65 arranged transfer elements 64 ' can later from the strips 65 eg be applied to banknote paper.

According to an alternative approach to that in the 7 to 9 As shown, the recesses may be in the separate, stabilizing film 71 instead of being larger, it may be smaller than the later patches. This results in the later patches a "frame" of the stabilizing foil 71 , In this way too, the stability of the later patches can be reduced and, for example, the protection against manipulation, in particular detachment of a patch from a banknote and application of the detached patch to a counterfeit banknote, can be increased.

Another method for weeding is based on the 10 to 12 explained. In the course of the production of in the 6 shown endless belt 65 one goes again from the broader endless band 61 out in which the patch shapes 62 the later, juxtaposed and initially in non-incised state interconnected security elements or transfer elements are punched, namely in the form of an upper and a lower contour and two lateral contour lines, the four contour lines surrounding the transfer element group (the outlines are shown in dashed lines ). The step of weeding out, in which the excess material of the security element layer composite outside the transfer element groups is removed, takes place here by means of register-accurate lamination of a separate, full-surface, ie no recesses, film 81 on the security element layer composite, with the separate film 81 is provided only in the areas to be removed of the security element layer composite with adhesive. The areas provided with adhesive are in the 10 simplified using the solid line 82 shown.

According to a preferred variant, the dimensions of the non-adhesive areas of the separate film 81 slightly larger than the dimensions of the non-removable areas of the security element layer composite, namely the transfer element areas to be created, selected so that the Entgittern a retention of remnants of the separate film (eg adhesive residues) is avoided at the transfer elements to be generated.

In the 11 is the one from the endless band 61 and the separate, stabilizing film 81 produced laminated composite 83 shown. The separate slide 81 is only provided in the areas to be removed of the security element layer composite with adhesive.

When wecking in the 11 laminating composite shown 83 becomes the stabilizing film 81 removed and with it the underlying areas of the security element layer composite outside the desired patch shapes. In the course of de-lattice, the transfer elements are, as it were, de-meshed in strips transversely to the running direction of the endless belt, wherein at least two of the later transfer elements remain connected to one another in a non-incised state in the transverse direction (see in FIGS 12 , left, on the temporary carrier 63 arranged transfer element groups 64 ). Then the wide endless band 63 namely, the temporary carrier on which at least two security elements or transfer elements are parallel in an un-cut, interconnected state 64 are arranged, to individual, strip-shaped endless belts 65 cut (see the block arrow 67 ). The strip-shaped endless bands 65 are then wound up on spools. The on the wound up strips 65 arranged transfer elements 64 ' can later from the strips 65 eg be applied to banknote paper.

According to an alternative approach to that in the 10 to 12 The method shown initially starts from the wide endless belt 61 with no patch shapes yet 62 are punched or cut. The undamped endless belt 61 will, as in the 10 shown with the separate, with adhesive areas 82 provided foil 81 glued to a laminated composite. Only then is the punching or cutting in of patch outlines (in the 11 shown with a dashed line). Above the resulting patches is the non-bonded stabilizing film 81 removed, eg by suction or by blowing away with compressed air. Then, the step of weeding and the further processing to individual transfer belts, as in the 11 to 12 shown.

Optionally, prior to weeding, the bond between the transfer layers to be removed and the separate stabilizing film may be increased by e.g. is melted by heating a present on the transfer layers heat seal adhesive and provides for an additional bond between the transfer layers and the stabilizing, separate film.

For example, in the 6 , left, shown film 61 In some cases, it may be relatively difficult to de-mesh, in particular because this is in the longitudinal direction or running direction of the endless belt 61 Under certain circumstances, very narrow grid in the separation winding tears easily. According to a preferred variant is therefore not cross-wound directionally (ie at an angle to the direction perpendicular to the direction α = 0 °), but as in the 13 shown at a suitable angle α, which is selected in particular in a range of 5 ° to 85 °, preferably in a range of 15 ° to 75 °, more preferably in a range of 30 ° to 60 ° and particularly preferably at 45 °.

In a punching or a cutting, as in the 6 to 12 is shown, result in the end rectangular patches. Of course, it is just as possible to create other patch shapes, such as in the 14 . 15 and 16 shown.

The 14 shows a slide 93 , which according to an alternative variant in the 6 (Middle) or in the 9 (left) or in the 12 , (left) shown film 63 can replace.

The wide endless band 93 , namely the temporary carrier, on the successive groups of three security elements or transfer elements 94 are arranged parallel in a non-cut, interconnected state, can be cut in a further step to individual, strip-shaped endless belts.

The 15 shows another slide 103 , which according to an alternative variant in the 6 (Middle) or in the 9 (left) or in the 12 , (left) shown film 63 can replace.

The wide endless band 103 , namely the temporary carrier, on the successive groups of three security elements or transfer elements 104 are arranged parallel in a non-cut, interconnected state, can be cut in a further step to individual, strip-shaped endless belts.

Furthermore, the arrangement of the patches does not have to be exactly perpendicular to the running direction of the endless belt (as in the 6 (Center), 9 (Left), 12 (left), in the 14 and in the 15 shown), but adjacent patches can also be offset in the direction of travel, see for example the 16 ,

The 16 shows a wide endless band 113 , namely a temporary carrier, on the successive groups of three security elements or transfer elements 114 are arranged in parallel in a non-cut, interconnected state. The endless band 113 can be cut in a further step to individual, strip-shaped endless belts. The transfer elements 114 are in the direction of the endless belt 113 offset or arranged at an angle. In this way, an even greater variety of patches can be created with respect to the patch outline.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0420261 B1 [0002]
• WO 2005/108108 A2 [0002]
• WO 2013/190048 A1 [0004]
• WO 2010/031543 A1 [0005, 0014, 0032, 0036, 0040]
• WO 2007/107235 A1 [0008, 0012]
• WO 2017/035437 A1 [0041]

Claims (17)

A method of producing a security element transfer material comprising a security element layer composite with security elements to be transferred, namely transfer elements, and a temporary carrier a) the step of providing a security element layer composite on the temporary support in the form of an endless belt having a longitudinal direction along the belt and a transverse direction perpendicular thereto; b) the step of providing the security element layer composite with cut-out contours so that a longitudinally repeating sequence of spaced-apart transfer element groups are generated and the transfer element groups are each formed by a transversely parallel and adjacent plurality of transfer elements, and each of the individual transfer element groups is surrounded by an upper and a lower transversely extending incised outline, respectively, and two lateral, longitudinally extending, incised outlines; c) the step of derangement, wherein the excess material of the security element layer composite outside the transfer element groups is removed; d) the step of cutting the resulting endless belt to one of the plurality of corresponding number of endless belts with transfer elements, wherein in the transverse direction only one transfer element is located at a time. Method according to Claim 1 in which, in step c), the excess material of the security element layer composite outside the transfer element groups is formed, on the one hand, in the form of strips running along the transverse direction, which are arranged between the longitudinally repeating sequence of mutually spaced transfer element groups, and, on the other hand, in FIG Form of two lateral, along the longitudinal direction extending strip is formed. Method according to Claim 1 or 2 wherein the security element laminate comprises a plurality of layers, including at least one feature layer, optionally a permanent support substrate, and a peek, wherein the peer layer is the layer facing a viewer after transferring a security element to a valuable article, and wherein the viewing layer may be identical to the feature layer or the optional permanent carrier substrate; and - the temporary carrier is detachably connected to the viewing layer of the security element laminate. Method according to one of Claims 1 to 3 wherein the temporary carrier comprises a carrier layer composite, which consists of a first and a second temporary carrier substrate, which are permanently bonded by means of an adhesive layer. Method according to one of Claims 1 to 3 where the incisions forming the incised contour lines may partially penetrate into the temporary carrier. Method according to Claim 4 in which the incisions forming the incised contour lines optionally partially or completely sever the first temporary carrier substrate and possibly partially or completely sever the adhesive layer, but do not penetrate into the second temporary carrier substrate, so that the temporary carrier can be separated off as a complete carrier layer composite. Method according to one of Claims 1 to 6 wherein the feature layer comprises an embossing lacquer layer optionally provided with one or more of the following layers, namely a metal layer, a metallic effect color-based layer, a color pigment or fluorescent pigment-based layer, a liquid crystal layer, a color-shift effect layer, which in particular has a reflector / dielectric / absorber three-layer structure, a layer with matt structures, as disclosed, for example, in WO 2007/107235 A1, or a printed colored motif layer. Method according to Claim 7 , wherein the embossing lacquer layer is provided with a relief structure, in particular a relief structure with microstructures and / or nanostructures. Method according to one of Claims 1 to 8th in which, in step c), namely the step of weeding, in which the excess material of the security element layer composite outside the transfer element groups is removed, weeding by means of a preceding registration of a separate film onto the areas of the security element layer composite to be removed takes place, wherein the separate film in the non-removable areas of the security element layer composite, namely to be generated transfer element areas, recesses. Method according to Claim 9 , wherein the dimensions of the recesses of the separate film are slightly larger than the dimensions of the non-removable areas of the security element layer composite, namely the transfer element areas to be generated, are selected, so that when Entgittern a remains of remnants of the separate Foil is avoided on the transfer elements to be generated. Method according to one of Claims 1 to 8th in which, in step c), namely the step of weeding, in which the excess material of the security element layer composite outside the transfer element groups is removed, the weeding by means of a preceding, register-accurate lamination of a separate, full-surface, ie no recesses having, on the security element layer composite takes place, wherein the separate film is provided only in the areas to be removed of the security element layer composite with adhesive. Method according to Claim 11 wherein the dimensions of the non-adhesive areas of the separate film are chosen to be slightly larger than the dimensions of the non-removable areas of the security element laminate, namely the transfer element areas to be created, thus leaving residues of the separate film in the weeding the transfer elements to be generated is avoided. Method according to one of Claims 9 to 12 , wherein the weeding out takes place by means of a separating winding, wherein the laminated on the security element layer composite, separate film at an angle α in a range of 5 ° to 85 °, preferably in a range of 15 ° to 75 °, more preferably in one Range of 30 ° to 60 ° and particularly preferably at 45 ° relative to the transverse direction of the endless belt is wound in a split, so as to avoid tearing of the areas to be removed of the security element layer composite. Method according to one of Claims 1 to 13 wherein the transfer element groups generated in step b), each formed by a transversely parallel and contiguous plurality of transfer elements, are formed substantially transversely or diagonally, eg at an angle of up to about 45 ° with respect to the transverse direction are. A security element transfer material comprising a security element laminate having security elements to be transferred, namely, transfer elements, and a temporary support obtainable by the method of any one of Claims 1 to 14 , Security element transfer material according to Claim 15 wherein the security element transfer material is an endless belt having transfer elements with only one transfer element in the transverse direction, the transfer elements being cut off laterally flush with the temporary carrier. Security element transfer material according to Claim 15 or 16 in which, from the security element laminate, the laminate is outside the outlines of the transfer elements, such that the security element transfer material has gaps in the security element laminate while the temporary support has no gaps.

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