EP2864133B1 - Method for transferring a decorative section of an embossing foil - Google Patents

Description

The invention relates to a method for transferring a decorative section of a stamping foil onto a substrate.

In the application of stamping foils, the paint package containing highly crosslinking paint systems, for example, UV-crosslinking paint systems and / or paint systems with high layer thickness, ie having a thickness greater than 5 microns of the transfer layer without carrier film, it is not possible in the embossing a to create a clean separation edge. In addition, the separation of the film composite in these cases does not take place at the edge of the application tool but in an undefined position. Due to the strong cross-linking, the formation of comparatively long or very long polymer chains occurs in the paints, whereby the physical properties of the paints are correspondingly influenced. Depending on the hardness of a highly crosslinked paint, for example, a comparatively hard and brittle paint can break undefined during embossing, with paint flakes different size can arise as unwanted contamination. For example, a comparatively soft and elastic lacquer can not or only incompletely break during embossing or tear undefined, so that in the worst case, no separation edge is formed. In the case of imprints of this type, stray remnants of the transfer layer formed as a paint package normally form, the aforementioned so-called flakes, which in the further processing of the embossed substrate lead to contamination of the machines and thus to increased cleaning effort. In extreme cases, these flakes can significantly increase the production output.

The CH 678835 A5 describes a layer composite with diffractive structures, from the brands are detachable, which can be applied to security documents. The marks are punched out of the layer composite without violating the backing layer of the layer composite. The unneeded parts of the laminate are removed from the security document before the marks are applied. Thus, the mechanical stability of the composite layer is determined only by the carrier layer. Trained with the stamped marks carrier layer is rolled up before further processing on a supply roll.

The DE 198 13 314 A1 describes an embossing film in which on a carrier film from each other completely separate decorative sections, so-called. Patches are arranged, which can be transferred to a substrate according to the usual procedure in the processing of stamping foils. The formation of the free spaces between the patches is provided by laser radiation, which removes the decorative layer of the stamping foil around the embossing area.

The DE 10 2007 005 416 A1 describes an embossing foil and a security sticker formed therewith, wherein a diffractive first relief structure is formed by molding (embossing or replicating) in a replicating layer. In this molding of the diffractive first relief structure, a second relief structure is molded at the same time, outside the region which is to be later embossed, the second relief structure being provided in the form of a line-shaped notch or a series of such notches substantially corresponding to an outline of the security label follows and has a notch depth which has more than half the layer thickness of the plastic and / or lacquer layer into which the molding or replication takes place.

The disadvantage of this is that extremely deep structures produced during replication involve the risk that the carrier around the paint package will already be weakened during production.

The object of the present invention is to specify an improved method which combines the advantages of a stable stamping foil with the clean separation of the decorative sections from the carrier foil.

According to the invention, this object is achieved with the subject matter of claim 1.

The object is further solved by the subject matter of claim 2.

The methods according to the invention have the advantage that it is possible with little device complexity to provide at least one predetermined breaking point for detaching the decorative section from the transfer layer in the transfer layer of the stamping foil. This is the hot embossing of stamping foils with highly crosslinking paint systems and / or paint layers high layer thickness with the clean separation of the decorative sections of the carrier film allows. The rest of the embossing foil is peeled off; this is the carrier foil with the parts of the transfer layer which do not belong to the decorative section and have not been embossed onto the substrate, ie the parts of the transfer layer which are still adhering to the carrier foil are detached.

Further, embossing foils in which an adhesive layer is applied either to the substrate or to the outside of a transfer layer to be transferred to the substrate, in particular partially in the form of a desired decoration or decorative section and by means of suitable drying or curing, e.g. by means of UV curing, are advantageously processed for transferring the transfer layer from the carrier film to the substrate, wherein a clean separation of the predetermined by the adhesive decor sections and the rest embossing film is formed.

The proposed punching of line notches is well applicable in a roll-to-roll manufacturing process. By punching the transfer layer is neither thermally nor chemically stressed. The environment is not burdened by pollutant emissions that can occur, for example, during laser cutting. In particular, these may be combustion products of the transfer layer, for. As gases such as CO ₂ , HCl, NO _X.

The line-shaped notches locally reduce the thickness of the transfer layer and act as a break notches or predetermined breaking points that form high mechanical stresses in the material of the transfer layer, so that the transfer layer breaks easily in the notch area.

Advantageous may be the formation of the predetermined breaking point as a line-shaped point notch. The flank angle can be in the range of 20 ° to 90 °. A flank angle of about 60 ° is preferred.

Further advantageous embodiments are designated in the subclaims.

It is possible that in step b) open notches are punched into the transfer layer, which are extending between opposite edges of the stamping foil and include the decorative portion. Open notches are here understood notches that are not self-contained, d. H. have one or more start and / or end points. Alternatively, it can be provided that more than one notch is punched in method step b), wherein the more than one notches form a punching area. By forming a plurality of notches, especially the manufacturing reliability is increased, so that the faulty formation of a notch does not put the separation result in question.

It has been proven that within the punching range 2 to 40 notches are introduced.

In preferred embodiments it can be provided that 3 to 4 notches are introduced within the punching area.

It can further be provided that adjacent notches have a constant spacing. Alternatively, it may also be provided that adjacent notches have a varying distance. For example, the distance between two adjacent notches may increase outwardly from a central notch, i. H. the notches directly adjacent to the middle notch have a certain distance to this and further, subsequent notches have a greater distance to these notches.

Alternatively, provision may be made for the distance between two adjacent notches to be reduced towards the outside, starting from a central notch. H. the notches directly adjacent to the middle notch have a certain distance to this and further, subsequent notches have a smaller distance to these notches.

Alternatively, it can also be provided that the spacing between adjacent notches has any desired values, that is to say that no symmetry is sufficient as previously described.

The punching area may have a width of 0.5 to 2.5 mm, preferably a width of 2 mm. It is ensured with a register accuracy of ± 1 mm, that the decor section is punched register accurate.

It can be provided that the notches have a mean width of 0.05 mm to 0.5 mm.

It can further be provided that the notches completely cut through the transfer layer, but terminate in front of the surface of the carrier film facing the transfer layer.

But it can also be provided that the notches sever the transfer layer between 20% and 100%. This ensures that the carrier film is not damaged, so that the carrier film has its full strength even after punching. It has been shown that the intended residue-free separation occurs when the notches cut through the transfer layer in depth by at least 20%.

It can be provided that, after the method step c) or after the method step e), the breaking of the stamped transfer layer takes place at the moment of detachment or shortly afterwards or before.

Fig. 1

ein erstes Ausführungsbeispiel der Prägefolie in schematischer Schnittdarstellung;

Fig. 2

ein zweites Ausführungsbeispiel der Prägefolie in schematischer Schnittdarstellung;

Fig. 3

Ausführungsbeispiele von geschlossenen Stanzformen;

Fig. 4a

eine Ausführungsbeispiel einer vorgestanzten Prägefolie mit einer Stanzform aus Fig. 3 in der Draufsicht;

Fig. 4b

eine Schnittdarstellung der Prägefolie längs der Schnittlinie IVb-IVb in Fig. 4a;

Fig. 5a

Ausführungsbeispiele von offenen Stanzformen;

Fig. 5b

eine Ausführungsbeispiel einer vorgestanzten Prägefolie mit linienförmiger Stanzform aus Fig. 5a in der Draufsicht

Fig. 6

eine erstes Ausführungsbeispiel einer Stanz- und Prägeeinrichtung zur Durchführung des erfindungsgemäßen Verfahrens;

Fig. 7

ein zweites Ausführungsbeispiel einer Stanz- und Prägeeinrichtung zur Durchführung des erfindungsgemäßen Verfahrens.

Fig. 8

ein zweites Ausführungsbeispiel der Prägefolie in schematischer Schnittdarstellung;

Fig.9

eine zweites Ausführungsbeispiel einer Stanz- und Prägeeinrichtung zur Durchführung des erfindungsgemäßen Verfahrens.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it

Fig. 1

a first embodiment of the stamping foil in a schematic sectional view;

Fig. 2

a second embodiment of the stamping foil in a schematic sectional view;

Fig. 3

Embodiments of closed dies;

Fig. 4a

an embodiment of a pre-punched stamping foil with a punching Fig. 3 in the plan view;

Fig. 4b

a sectional view of the stamping foil along the section line IVb-IVb in Fig. 4a ;

Fig. 5a

Embodiments of open dies;

Fig. 5b

an embodiment of a pre-punched stamping foil with linear punching form Fig. 5a in the plan view

Fig. 6

a first embodiment of a punching and embossing device for carrying out the method according to the invention;

Fig. 7

A second embodiment of a punching and embossing device for carrying out the method according to the invention.

Fig. 8

a second embodiment of the stamping foil in a schematic sectional view;

Figure 9

A second embodiment of a punching and embossing device for carrying out the method according to the invention.

Fig. 1 shows a section of a usable in the roll-to-roll process embossing film 1 with a carrier film 11 and a transfer layer 13, between which a release layer 12 is arranged. On the transfer layer 13, an adhesive layer 14 is arranged, which may be, for example, a hot melt adhesive layer, which is thermally activated, or also a cold adhesive layer, which is activated by high-energy radiation act.

In the transfer layer 13 is a paint package of one or more highly crosslinked paints, for example, a UV-crosslinked paint and optionally from other layers, such as more Coating layers and / or metallic layers and / or a transfer layer with a high layer thickness, ie with a layer thickness greater than 5 microns, especially greater than 10 microns. Hard and brittle transfer layers can form unclean and / or inaccurate separation edges during embossing. In imprints of this type, stray remnants of the transfer layer are frequently formed, so-called flakes, which in the further processing of the embossed substrate lead to contamination of the machines and thus to increased cleaning effort. To avoid unclean and / or inaccurate separating edges, line-shaped pointed notches 15 with a V-shaped cross section are introduced into the embossing foil 1 from the side of the adhesive layer 14, the depth of which is selected so that the notches 15 on the surface facing the transfer layer 13 the carrier film 11 ends. The flank angle is in the in Fig. 1 illustrated embodiment about 60 °. The carrier film 11 is therefore not damaged by the punching process and has full strength in all areas. These notches act as predetermined breaking points for the transfer layer, because in the notch area high voltages are formed in the notched material.

In the in Fig. 1 illustrated embodiment, two line-shaped notches 15 are arranged side by side, forming a punching area 15s. The punching area 15s may preferably have a width of 0.5 to 2.5 mm. The punching area 15s delimits a decorative section 16 formed in the transfer layer 13 and in the adhesive layer 14. The decorative section 16 may be, for example, an OVD (OVD = Optically Variable Device) which acts as a security element hard to falsify on a security document such as a security document Banknote, credit card or the like is applied. In Fig. 1 a boundary line delimiting the decorative section 16 16s is drawn, wherein the punching area 15s outside the Decor section 16 is located. The boundary line 16s can be found in the in Fig. 1 embodiment shown to be an outer edge of a decor, such as an OVD, as for example below in Fig. 4a shown. The boundary line 16s delimits the decor section 16 from the remainder of the transfer layer 13, wherein this remaining, adjacent to the decor section 16 transfer layer 13 may be formed, for example, transparent or translucent. However, the stamping foil 1 alternatively and as for example below in Fig. 5b shown, an endless design without a defined outer edge or outer boundary of a decor or decorative section 16, then a boundary line 16s is not or only partially available. In the case of such an endless decoration, the punching area 15s can lie within the decorative sections 16 not exactly demarcated prior to the punching and / or the decorative sections 16 within the endless design are only defined by inserting the notches 15 in a punching area 15s.

Fig. 2 shows the stamping foil 1 Fig. 1 with a modified formation of the notches 15. In the in Fig. 2 illustrated embodiment, six line-shaped notches 15 are provided, which protrude only about 20% in the transfer layer 13. The line-shaped notches 15 form as in the above in Fig. 1 described embodiment, the punching area 15s. In the in Fig. 2 In the embodiment shown, the two outer notches 15a are exemplarily spaced apart, the four inner notches 15b are formed without spacing between adjacent notches. The two outer notches and the four inner notches each form a group with the same arrangement. In addition to the arrangement of the notches 15, the number of notches 15 in the punching area 15s can also be varied. Preferably, between 2 and 40 adjacent notches 15 are provided, wherein the width of the punching portion 15s may preferably be about 2 mm. In spite of the comparison to Fig. 1 shortened or less deep formation of the notches 15, they act as predetermined breaking points, so that completely breaks due to the high stresses occurring in the notched material of the transfer layer, the transfer position at bending stress.

It is also possible to vary the depth and / or the flank angle of the notches arranged in the punching area 15s.

Fig. 3 shows embodiments of closed dies, ie punching forms, the closed line-shaped notches 15. As the examples show, very different shapes can be formed, so that the design of the decorative sections 16 to be transferred is subject to almost no restrictions.

The Fig. 4a and 4b show the example of a star-shaped decorative portion 16, the formation of the line-shaped notches 15 and the punching portion 15s.

The punching area 15s surrounds the decorative portion 16 at a constant distance. There are three equally spaced line-shaped notches 15 are provided with the decor portion 16 from the inside outward growing extent. To a common center, which coincides with the center of the star-shaped decor portion 16, so three punches are provided with increasing extent, the distances of the punches as in Fig. 4a and 4b can be constant or vary. With a register fluctuation of ± 1 mm and a punching area 15s with a width of 2 mm, the transfer layer 13 is punched three times, so that the decorative portion 16 when embossing completely and accurately from the Transfer layer 13 and is separated out of the adhesive layer 14. Fig. 4a shows an example of the application of a decorative portion 16 of a transfer layer 13 and an adhesive layer 14 in the form of a so-called patch or label on a substrate.

The Fig. 5a shows embodiments of open punching forms, wherein the decorative portion is bounded in each case by at least two spaced-apart line-shaped notches or punching areas. Assuming that the decorative portion to be embossed occupies the entire width of the embossing foil, two line-shaped notches or punching areas are necessary in order to emboss the decorative portion. For example, each of the punch areas may include 2 to 40 line notches.

Fig. 5b shows on the example of a strip-shaped, endless embossing film 1 for a roll-to-roll processing, the formation of the line-shaped notches 15 and the punching portion 15s. In this case, a transfer layer 13 extends on the embossing foil 1, which is to be embossed in sections, ie, divided into separate decor regions 16, onto different individual substrates 23. Between the individual decor areas 16, the punching areas 15s are arranged, in which in each case 3 line-shaped notches 15 are provided in this embodiment shown. The punching areas 15s are each arranged in the register, that is to say in a precise position relative to a decorative area 16 formed by the transfer layer 13 and the adhesive layer 14.

1. a) Bereitstellen der Prägefolie;
2. b) Einstanzen mindestens einer vom Rand des Dekorabschnitts beabstandeten linienförmigen Kerbe in die Übertragungslage und die Kleberschicht;
3. c) Prägen des Dekorabschnitts auf das Substrat;
4. d) Ablösen der Restprägefolie von dem mit dem Dekorabschnitt beprägten Substrat.

The Fig. 6 shows a first embodiment of a stamping and embossing device 2 for carrying out the method according to the invention, comprising the following steps:

1. a) providing the stamping foil;
2. b) puncturing at least one spaced from the edge of the decorative section line-shaped notch in the transfer layer and the adhesive layer;
3. c) embossing the decorative section on the substrate;
4. d) detachment of the rest embossing foil from the impressed with the decor portion substrate.

The stamping foil 1 is provided on an unwinding roll 21 and is then guided into a punching station formed by a round punch 22 and an impression cylinder 22 '. In the punching station, the above-described line-shaped notches 15 are stamped into the transfer layer 13 and the adhesive layer 14 of the stamping foil 1 such that decor sections 16 formed in the stamping foil 1 are surrounded in register by the line-shaped notches 15. The stamping foil 1 is now guided over a first deflection roller 27 which is also operated as a pressure roller and presses the stamping foil 1 onto a substrate 23 to be embossed. The stamped foil 1 which is brought together with the substrate 23 is now guided through an embossing station, which comprises a heated stamping cylinder 24 and two second deflecting rollers 27, which at the same time provide the necessary contact pressure of the substrate 23 on the stamping cylinder 24. The embossing foil 1 arranged on the substrate 23 faces the surface of the embossing cylinder 24. The second deflection rollers 27 are arranged so that the embossing cylinder 24 is approximately half looped by the embossing foil 1 and the substrate 23. In the embossing station, the pre-cut decorative sections 16 are transferred to the substrate 23 by registered, ie position-controlled action of the embossing area of the embossing cylinder 24 with the aid of pressure and heat. The embossing cylinder 24 can on his circumference completely or only partially heated and / or not shown in detail embossing zones, with which the decorative portions 16 are transferred by means of pressure and heat to the substrate 23. In this case, the embossing zones can approximately coincide in size and / or contour with the decorative sections 16. Thus, a substrate 25 is formed with applied decorative portions 16, wherein the decorative portions 16, as described above, are surrounded by punching areas in which the transfer layer 13 and / or the adhesive layer 14 breaks easily. Breakage of the pinched transfer layer may take place at the moment of detachment or shortly after or before.

Immediately behind the embossing station, a residual embossing film 1r is removed from the substrate 25 with the decorative sections applied and wound up on a take-up reel 26. The residual embossing film 1r has at least the carrier film 11 and the regions of the transfer layer 13 with the adhesive layer 14, which were not transferred to the substrate 23.

The register-accurate punching of the notches 15 is facilitated by the fact that the round punch 22 and the embossing cylinder 24 are synchronized by gear technology coupling, possibly with additional fine control, in their course.

In one embodiment, not shown, the round punch 22 is replaced by a movable knife or by a lifting punch. The knife or the lifting punch are controlled by a register mark on the embossing foil detecting sensor, which is preferably arranged immediately after the unwinding roller 21 and in front of the knife or the lifting punch, so that the knife or the lifting punch according to this register mark on the film register-accurate punches can produce a present on the embossing film decoration or existing decor sections. Of the The register mark on the film detecting sensor can also control the embossing cylinder 24 in register to control the embossing cylinder 24 in register, that is positionally accurate or position-controlled to the decorative sections on the stamping foil and thus the punches.

Fig. 7 shows a second embodiment of a punching and embossing device 2 for carrying out the method according to the invention, wherein the embossing device as in Fig. 6 illustrated punching and embossing device is constructed, with the difference that a linearly movable die 24 'is provided so that the substrate 23 is not deflected in the punching and embossing device 2. In the Fig. 7 Punching and embossing device 2 shown is therefore particularly suitable for embossing relatively rigid substrates, for example for embossing credit or identity cards.

Alternatively to the in the 6 and 7 Inline variant shown in the punching and embossing device are arranged in a continuous roll-to-roll process immediately after one another, it is also possible to decouple the embossing device and the punching device procedurally and operate offline. It is thus possible, for example, for a separate punching device, which is locally separate from the embossing device, to insert punching areas 15s into the stamping foil by means of the above-described round punching, lifting punch or knife, and then to stamp this embossed foil 1 in a separate operation of an embossing device for embossing the decorative sections 16 is supplied to a substrate 23. Between two operations, the stamping foil rolled up, assembled, ie cut in length and / or width and transported, since the registration accuracy between embossing foil and substrate during embossing again can be adjusted by the provided on the stamping foil register marks.

1. a) Bereitstellen der Prägefolie;
2. b) Einstanzen mindestens einer vom Rand des Dekorabschnitts beabstandeten linienförmigen Kerbe in die Übertragungslage;
3. c) Aufbringen eines Klebers auf das Substrat oder Aufbringen des Klebers auf die Prägefolie,
4. d) Zusammenführen von Prägefolie und Substrat,
5. e) Aushärten oder Trocknen des Klebers,
6. f) Ablösen der Restprägefolie von dem mit dem Dekorabschnitt beprägten Substrat.

Fig. 9 shows a punching and embossing device 3 for performing a cold stamping process, comprising the following steps:

1. a) providing the stamping foil;
2. b) puncturing at least one spaced from the edge of the decorative section line-shaped notch in the transfer layer;
3. c) applying an adhesive to the substrate or applying the adhesive to the stamping foil,
4. d) merging embossing foil and substrate,
5. e) curing or drying of the adhesive,
6. f) detachment of the rest embossing foil from the impressed with the decor portion substrate.

The stamping foil 1 is provided on an unwinding roll 21 and is then guided into a punching station formed by a round punch 22 and an impression cylinder 22 '. In the punching station, the above-described line-shaped notches 15 are stamped into the transfer layer 13 of the transfer film 1 in such a way that decorative sections 16 formed in the stamping foil 1 are surrounded in register by the line-shaped notches 15. An adhesive 23 is applied to a substrate 23 in an adhesive applicator 31, in particular partially in the form of decor sections, for example printed or sprayed on. Alternatively and not shown, the adhesive can also be applied to the substrate-facing outside of the transfer layer of the stamping foil 1. The transfer film 1 is now guided over a first deflection roller 27, which is also operated as a pressure roller and the Transfer sheet 1 presses on the substrate to be embossed 23. The stamped foil 1, which is brought together with the substrate 23 and rests on the adhesive, is then passed through a drying station 32. There, a partial or complete drying and / or curing of the adhesive is provided, for example by means of heat and / or UV exposure. Thus, a substrate 25 is formed with applied and fixed by means of the cured adhesive on the substrate 23 decor sections, wherein the decorative sections, as described above, are surrounded by punching areas in which the transfer layer breaks easily. Breakage of the pinched transfer layer may take place at the moment of detachment or shortly after or before.

Immediately behind the drying station 32, a residual embossing film 1r is removed from the substrate 25 with the decorative sections applied and wound up on a take-up roll 26. In this case, the residual embossing film 1r has at least the carrier film 11 and the regions of the transfer layer 13 which were not transferred to the substrate 23.

The register-accurate punching of the notches 15 is facilitated by the fact that the circular punch 22 and the Kleberauftragswerk 31 are synchronized by transmission technology and / or electronic coupling, possibly with additional fine control in their course.

In an embodiment not shown, the round punch 22 is replaced by a movable knife or by a lifting punch. The knife or the lifting punch are controlled by a register mark on the transfer sheet detecting sensor, which is preferably arranged immediately after the unwinding roller 21 and in front of the knife or the lifting punch, so that the Knife or the lifting punch according to this register mark on the slide can produce register-accurate punches. The register mark on the film detecting sensor can also control the Kleberauftragswerk 31 register accurate.

LIST OF REFERENCE NUMBERS

1

stamping foil

1r

Rest stamping foil

2

Punching and embossing device (hot stamping)

3

Punching and embossing device (cold stamping)

11

support film

12

release layer

13

transfer layer

14

adhesive layer

15

linear notch

15a

Notches spaced apart

15 b

Notches without spacing from each other

15s

punch area

16

decor section

16s

Borderline of the decor section

21

unwinding

22

round punch

22 '

Impression cylinder

23

substratum

24

embossing cylinders

24 '

dies

25

Substrate with applied decor section

26

up roll

27

idler pulley

31

Glue applicator unit

32

drying station

1. 1. LEONHARD KURZ Foundation & Co. KG, Schwabacher Str. 482, 90763 Fuerth, Germany
2. 2. OVD Kinegram AG, Zählweg 12, 6301 Zug, Switzerland
3. 3. KBA-NotaSys SA, Avenue du Gray 55, 1018 Lausanne 22, Switzerland

Claims (11)

1. Method for transferring a decorative portion (16) of an embossing film (1) onto a substrate (23) by means of an embossing roller (24) or an embossing stamp (24'), wherein the embossing film (1) comprises a carrier film (11) and a transfer sheet (13) arranged on the carrier film (11),
   wherein the method comprises the following steps:

   a) providing the embossing film (1);

   b) stamping at least one notch (15) into the transfer sheet (13), said notch being spaced apart from the edge of the decorative portion (16) by no more than 2mm and formed as a linear notch;

   c) embossing the decorative portion (16) onto the substrate (23);

   d) detaching the remaining embossing film (1r) from the substrate (25) embossed with the decorative portion (16), wherein
   in method step b), open notches (15) are stamped into the transfer sheet (13) which are extended between opposite edges of the embossing film (1) and enclose the decorative portion (16) or wherein, in method step b), more than one notch (15) is stamped, wherein the more than one notch (15) form a stamping region (15s).
2. Method for transferring a decorative portion (16) of an embossing film (1) onto a substrate (23), wherein the embossing film (1) has a carrier film (11) and a transfer sheet (13) arranged on the carrier film (11),
   wherein the method comprises the following steps:

   a) providing the embossing film (1);

   b) stamping at least one notch (15) into the transfer sheet (13), said notch being spaced apart from the edge of the decorative portion (16) by no more than 2mm and formed as a linear notch;

   c) applying an adhesive to the substrate (23) or applying the adhesive to the embossing film (1),

   d) bringing together embossing film and substrate,

   e) curing or drying the adhesive,

   f) detaching the remaining embossing film from the substrate (25) embossed with the decorative portion (16), wherein, in method step b), open notches (15) are stamped into the transfer layer (13) which are extended between opposite edges of the embossing film (1) and enclose the decorative portion (16) or wherein, in method step b), more than one notch (15) is stamped, wherein the more than one notch (15) form a stamping region (15s).
3. Method according to claim 1 or 2,
   characterised in that
   2 to 40 notches (15) are introduced within the stamping region (15s).
4. Method according to claim 3,
   characterised in that
   3 to 4 notches (15) are introduced within the stamping region (15s).
5. Method according to claim 3 or 4,
   characterised in that
   adjacent notches (15) have a constant distance.
6. Method according to one of the preceding claims,
   characterised in that
   the stamping region (15s) has a width of 0.5 to 2.5mm.
7. Method according to one of the preceding claims,
   characterised in that
   the notches (15) have an average width of 0.05mm to 0.5mm.
8. Method according to one of the preceding claims,
   characterised in that
   the notches (15) cut through the transfer sheet (13) between 20% and 100%.
9. Method according to one of the preceding claims,
   characterised in that
   the notches (15) cut through the transfer sheet (13) fully, but end before the surface of the carrier film (11), said surface facing the transfer sheet (13).
10. Method according to claim 1,
    characterised in that
    after method step c), the breaking of the punched transfer sheet is provided at the moment of detachment or shortly afterwards or shortly before.
11. Method according to claim 2,
    characterised in that
    after method step e), the breaking of the punched transfer sheet is provided at the moment of detachment or shortly afterwards or shortly before.

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