Patent ID: 12246524

DETAILED DESCRIPTION

FIG.1ashows two donor films301,302. It is possible here for at least one of the donor films301,302to be a donor transfer film, preferably a hot-stamping, cold-stamping, and/or a thermal-transfer film, and/or to be a donor laminating film. It is further possible for the donor films301,302to be designed similar and/or different from one another.

It is preferably possible for the donor films301,302in each case to comprise one or more assistance layers11a, at least one decorative ply4a, a delamination ply and/or at least one functional ply5a.

FIG.1bshows a receiver film2. It is possible here for the receiver film to be a receiver transfer film, preferably a hot-stamping film or cold-stamping film or thermal-transfer film, or for the receiver film2to be a receiver laminating film.

It is possible for the receiver film2to comprise a receiver carrier ply21, a decorative ply4b, a delamination ply and/or a functional ply5b.

A decorative ply4a,4bin each case has one of the following or a combination of the following layers, in particular in each case over the whole surface and/or over part of the surface:

one or more varnish layers, one or more layers containing a liquid-crystal material, one or more layers containing a thin-film system, one or more metallic layers, one or more volume hologram layers, one or more layers having an optically active surface structure or an optically active surface relief, one or more reflective layers10a,10b.

Further, it is possible for the receiver film2to have one or more assistance layers11b. An assistance layer11a,11bhas in particular one of the following or a combination of the following layers:

one or more adhesion-promoter layers, one or more detachment layers, one or more protective layers and/or one or more print-receiving layers.

FIG.1cshows by way of example a film intermediate product1comprising the receiver film2depicted inFIG.1band two film elements311,312, which are in each case formed of a cutout of the donor films301,302depicted inFIG.1aand which are deposited on the receiver film2.

FIG.1atoFIG.1cthus show a method for producing a film intermediate product1.FIG.1bshows step a), providing a receiver film2.FIG.1ashows step b), providing one or more donor films, wherein two donor films301,302are provided here in particular.FIG.1cshows the depositing of one or more film elements, which is or are formed in each case of a cutout of one of the one or more donor films, on the receiver film2fromFIG.1a, wherein the film elements311,312are in each case formed of a cutout of the donor films301,302here in particular.

Here, the steps can in particular be carried out once and/or multiple times in any order, preferably in the above-named order.

It is thus possible for a film element311,312to be formed of a cutout of a donor transfer film, in particular a cutout of a hot-stamping film, a cold-stamping film and/or a thermal-transfer film. Further, it is also possible for a film element311,312to be formed of a cutout of a donor laminating film.

In particular, it is possible for the cutout of a donor film forming a respective film element311,312to comprise the entire donor film301,302or only one part and/or several parts of a donor film301,302.

The film intermediate product1, when viewed perpendicular to a plane spanned by the film intermediate product, preferably in top view starting from the sectional representation shown here, preferably has at least two, preferably different, directly adjoining, at least partially overlapping and/or neighboring film elements, which would be incompatible in the case of manufacture on one film and/or would at least mean an increase in the manufacturing time, a reduction in the quality of the features and/or more waste and/or higher production costs.

FIG.2ashows a receiver film2, which comprises a receiver carrier ply21, a decorative ply4band a functional ply5b. The receiver carrier ply21preferably consists of PET, BOPP, PEN, PMMA, PC, ABS, PU, PVC and/or glass, and has in particular a layer thickness of from 5 μm to 150 μm, preferably 10 μm to 75 μm.

The decorative ply4bis arranged between the receiver carrier ply21and the functional ply5bhere by way of example. It is also possible for the functional ply5bto be arranged between the decorative ply4band the receiver carrier ply21.

Further, it is possible for the receiver film2to have at least one delamination ply18and/or at least one assistance layer11b.

With respect to the design of the plies or layers, as well as further plies or layers, reference is made to the above embodiments.

FIG.2bshows a donor film3, which comprises a donor carrier ply31, a decorative ply4aand a functional ply5a. The donor carrier ply31preferably consists of PET, BOPP, PEN, PMMA, PC, ABS, PU, PVC and/or glass, and has in particular a layer thickness of from 5 μm to 150 μm, preferably 5 μm to 75 μm, further preferably 5 μm to 50 μm.

The decorative ply4ais arranged between the donor carrier ply31and the functional ply5ahere by way of example. It is also possible for the functional ply5ato be arranged between the decorative ply4aand the donor carrier ply31.

Further, it is possible for the donor film301to have at least one delamination ply18and/or at least one assistance layer11b.

Thus, it is further possible for the one or more film elements311to314formed in each case of a cutout of one of the one or more donor films301to have at least one decorative ply4aand/or at least one functional ply5aand/or a delamination ply18.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.3ashows a donor film301comprising a donor carrier ply31, a donor transfer ply32and a donor detachment layer33.

The donor detachment layer33is preferably arranged between the donor carrier ply31and further layers of the donor film301.

Here, the donor transfer ply32preferably comprises one or more of the above-described assistance layers11a, decorative plies4a, functional plies5aand/or delamination plies18.

The donor detachment layer33has the properties of a detachment layer. A detachment layer comprises in particular one or more wax layers. Further, a detachment layer preferably has an adhesive layer. In particular, the donor carrier ply31is detachable from the donor transfer ply32through the donor detachment layer33.

The donor carrier ply31can in particular be separated from the donor transfer ply32nondestructively. Further, it is possible for a shaping of a film element311,312transferred by means of the donor transfer ply32to take place during the detachment.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.3bshows a receiver film2comprising a receiver carrier ply21, a receiver transfer ply22and/or a receiver detachment layer23.

The receiver detachment layer23is preferably arranged between the receiver carrier ply21and further layers of the receiver film2.

Here, the receiver transfer ply22preferably comprises one or more of the above-described assistance layers11a, decorative plies4b, functional plies5band/or delamination plies18.

Further, it is possible for the receiver transfer ply22to have a transparent layer, in particular a layer that is transparent at least in a partial region in the UV range with a wavelength of from 400 nm to 240 nm and/or for the human eye, and/or a color layer which is preferably printed on.

With respect to the design of the receiver detachment layer23, reference is made to the above embodiment of a detachment layer.

In particular, the receiver carrier ply21is detachable from the receiver transfer ply22through the receiver detachment layer23. The receiver carrier ply21can therefore be separated from the receiver transfer ply22nondestructively.

Further, it is possible in particular for a shaping of the receiver transfer ply22to take place when the receiver transfer ply22is detached from the receiver carrier ply21.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.3cshows a donor film301with a donor transfer ply32and a donor carrier ply31. Here, the donor film301or the donor carrier ply31has a recess6, which is introduced through the donor transfer ply32and partially into the donor carrier ply31.

Instead of the recess6, the donor film301preferably has a void and/or a complete and/or partial severance7aof the donor carrier ply31and/or of the donor transfer ply32and/or has additional severances7aand/or recesses6of the donor carrier ply31and/or of the donor transfer ply32.

With respect to the design of the plies or layers, as well as further plies or layers, reference is made to the above embodiments.

FIG.3dshows a donor film301, which was described inFIG.3c. In the embodiment example shown here, the donor film301is a donor transfer film and the donor transfer ply32is detachable from the donor carrier ply31.

Here, the donor film301or the donor carrier ply31has an optional recess6, which is introduced into the donor transfer ply32and partially into the donor carrier ply31.

It is likewise possible for no recesses6to be provided and/or for severances7aand/or voids to be provided instead of the recesses6.

Further, the donor film301is joined to a receiver film2by way of example here. The donor carrier ply31is preferably detached from the donor transfer ply32at least in regions, wherein in particular a first partial region of the donor transfer ply32remains as a film element311on the receiver film.

Preferably, the donor film301is a donor transfer film, which is in particular a hot-stamping film, and the receiver film2is a receiver transfer film, which is in particular a hot-stamping film.

Further film elements are preferably formed from cutouts of the donor film301, which is a donor transfer film, and/or from further one or more donor films302,303,304.

Rolls are preferably used to set the peeling angle14. In particular, it has proved worthwhile to peel the donor film301off over an edge. In particular, very pointed edges, preferably with a small angle between the faces, are particularly advantageous, as they allow for example a narrowly localized peel location with a large peeling angle, preferably up to 180°. Mechanical separation aids are preferably used for a sharp-edged breaking of the donor transfer plies32.

In particular, recesses6, severances7a,7band/or voids are provided and/or a peeling angle14of between 30° and 180°, preferably 90° and 180°, is set.

In particular, a smaller detachment force for detaching the donor carrier ply31from the donor transfer ply32deposited on the receiver film2is hereby achieved than without recesses6, severances7a,7band/or voids and/or at different peeling angles. In particular, relatively small thermal and/or mechanical loads are thereby produced on the donor transfer plies32and/or the receiver film2, which is preferably a receiver transfer film, preferably is a hot-stamping film.

This is true in particular in the case of a hot stamping of one or more donor films301to304as hot-stamping films onto a receiver film2as hot-stamping film.

Through a suitable process control, in particular in the case of a cold stamping and/or hot stamping, in step c), it has surprisingly been shown that even donor transfer plies32with relatively large detachment forces can be deposited on a receiver film2, which is preferably a receiver transfer film, the receiver transfer plies of which have small detachment forces, without the receiver transfer ply22being or having been detached from the receiver carrier ply21and/or a desired function in the film intermediate product1being lost, for example the function of a delamination ply.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.3eshows by way of example a donor film301with a donor carrier ply31, a further donor carrier ply31aand a donor transfer ply32, wherein recesses6are introduced into the further donor carrier ply31a, with the result that the donor film301is preferably coated on a receiver film2like the donor film301described inFIG.3dand the donor carrier ply31and/or the further donor carrier ply31ais advantageously detached.

Further, the donor transfer ply32comprises a donor adhesive layer34, which is preferably used to deposit the respective donor transfer ply32, which preferably forms a cutout of the donor film301forming one or more film elements311to314, on the receiver film2. The donor transfer ply32preferably has a decorative ply4a, which is formed by a printed layer by way of example here.

Further, it is possible for the further donor carrier ply31ato be designed detachable from the donor carrier ply31, in such a way that the further donor carrier plies31a, preferably after the respective donor film301has been deposited on a receiver film2and after the donor carrier ply32has subsequently been detached from one or more first partial regions of the respective donor transfer ply32at least in regions, remain as film elements on the receiver film2.

Further, it is possible in particular for the donor film301with the further donor carrier ply31ato form voids at the locations of the recesses6, wherein the further donor carrier ply31awith the voids is applied to the donor carrier ply31, preferably with a donor transfer ply32arranged on the further donor carrier ply31a.

In particular, the donor carrier ply31and/or the further donor carrier plies31ais or are a PET carrier.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.3fshows by way of example the donor film shown inFIG.3ein a view from below. Further, register marks13are deposited by way of example here.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.4ashows by way of example a donor film302with a donor carrier ply31, a donor detachment layer33and a donor transfer ply32, which has an optional donor adhesive layer34, wherein the donor adhesive layer34is preferably a heat-seal adhesive layer, which is activated by means of pressure and heat.

The pressure and the heat in step c) are preferably generated by means of hot stamping by a heated stamping die. Further, the donor transfer ply32has a decorative ply4a, preferably with a replication layer9a, into which in particular at least one optically active surface structure is introduced, and which is preferably arranged between the optional donor adhesive layer34and the donor detachment layer33.

Further, the decorative ply4ahas, between the replication layer9aand the optional donor adhesive layer24, a reflective layer10a, preferably a metallic reflective layer, which is in particular partially deposited, preferably is at least partially deposited on the at least one optically active surface structure of the replication layer9a.

Further, it is possible for the donor transfer ply to have an assistance layer11abetween the donor detachment layer33and the replication layer9a.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.4bshows by way of example a receiver film2with a receiver carrier ply21, a receiver detachment layer23and a receiver transfer ply22, which has in particular a receiver adhesive layer24.

Further, the receiver transfer ply22has in particular a decorative ply4b, preferably with a reflective layer10b, which preferably has an HRI layer and/or has a partially transparent HRI layer, and which is arranged between the optional receiver adhesive layer24and the receiver detachment layer23.

An HRI layer (HRI=High Refractive Index) is a layer with a high refractive index, in particular with a refractive index of more than 1.5, preferably of more than 1.7.

Further, the decorative ply4bpreferably has a replication layer9b, into which in particular at least one further optically active surface structure is introduced, and which is arranged between the reflective layer10band the receiver detachment layer23.

The receiver transfer ply22in addition preferably has an assistance layer11bbetween the replication layer9band the receiver detachment layer23. In particular, the receiver transfer ply22forms a diffractive feature, preferably a diffractive security feature.

Further, it is possible for the reflective layer to have a thin-film system.

The receiver film2is preferably a receiver transfer film, wherein the receiver transfer ply22is detachable from the receiver carrier ply21, wherein the detachment or the separation of the receiver transfer ply22from the receiver carrier ply21is preferably ensured by a detachment layer23, which comprises one or more wax layers.

The reflective layer10bis preferably at least partially deposited on the at least one further optically active surface structure of the replication layer9b.

A receiver adhesive layer24, preferably a heat-seal adhesive layer, which is activated by means of pressure and heat, is preferably arranged on the reflective layer10b. The pressure and the heat in step c) are preferably generated by means of hot stamping by a heated stamping die.

It is possible for the receiver adhesive layer24to have an adhesion-promoter layer, which is preferably used to improve the binding of the receiver adhesive layer24to the reflective layer.

Further, it is possible for the receiver adhesive layer24in particular to be partially coated on, preferably to be coated individually onto one or more first partial regions. The receiver adhesive layer24is preferably radiation-curable. Here, step c) is preferably carried out by means of cold stamping, wherein the one or more donor films are joined to the receiver adhesive layer24and the adhesive is cured by means of irradiation.

During the detachment of the respective donor carrier ply31, the donor transfer plies arranged in the one or more first partial regions on which the receiver adhesive layer24is arranged expediently remain adhering as film elements311to314to the receiver film2.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.5shows by way of example the donor transfer ply32depicted inFIG.4a, which is deposited on a receiver film2and thus forms a cutout of the donor film301forming a film element311. Here, for example, an upper assistance layer11acan be provided on the donor transfer ply32and/or the film element311, which is arranged on the outermost side facing away from the receiver film2.

In particular, the upper assistance layer11ahas an adhesive layer, which is preferably an adhesive layer of the donor detachment layer33of the respective donor film301, which forms the film element311.

The donor detachment layer33preferably further has at least one wax layer, with the result that this adhesive layer remains on the donor transfer ply32and as a layer of the film element311on the receiver film2when the donor carrier ply31is detached from the donor transfer ply32. This adhesive layer is then in particular used to join the film intermediate product1to a target substrate.

Here, the shape of the deposited film element311is in particular determined by the shape of the stamping die during a hot stamping in step c).

Further, it is possible for the shape of the deposited film element311to be determined in that the adhesive layer is printed during a cold stamping in step c), in particular in that, in step c), an adhesive layer is printed, in particular by means of a digital printing method, onto the donor film301and/or onto the receiver film2in one or more first partial regions20b, but is not printed on in one or more second partial regions.

Further, it is preferably possible for the shape of the film element311to be determined by recesses6, severances7a,7band/or voids, as is described in particular inFIG.3d,FIG.3eandFIG.3f.

Further, it is possible for the receiver film2to be a receiver transfer film with a receiver transfer ply21, wherein the film element311or further film elements are deposited on the receiver transfer ply21.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.6shows by way of example a film intermediate product1, wherein a film element311from a cutout of a donor transfer ply32as described inFIG.5is deposited on a receiver film2as described inFIG.4b.

Here, a further adhesive layer8, which is single- or multi-layered and is preferably used to join the film intermediate product1to a target substrate, is applied to the receiver film2and the donor transfer ply32or the film element311.

It has proved to be advantageous if the softening temperature of the donor adhesive layer34and that of the receiver adhesive layer24differ, and/or if the softening temperature of the donor adhesive layer34and/or the softening temperature of the receiver adhesive layer24differs from the softening temperature of the further adhesive layer8, in particular if the softening temperature of the donor adhesive layer34is at least 2.5° C., preferably at least 5° C., preferably at least 7.5° C., below the softening temperature of the receiver adhesive layer24.

Further, it has proved to be advantageous for the softening temperature of the further adhesive layer8to be at least 2.5° C., in particular at least 5° C., preferably at least 7.5° C., below the softening temperature of the donor adhesive layer34and/or the receiver adhesive layer24, and/or for a softening of the further adhesive layer8to be carried out, wherein the temperature of the donor adhesive layer34and/or of the receiver adhesive layer24is at least 2.5° C. lower, in particular is at least 5° C. lower, preferably is at least 7.5° C. lower, than the softening temperature of the respective donor adhesive layer34or receiver adhesive layer24.

Further, it is possible for the donor adhesive layer34to be crosslinked chemically and/or by radiation, in particular after step c), and/or for the softening temperature of the donor adhesive layer34and/or receiver adhesive layer24to be increased after step c).

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.7shows by way of example a film intermediate product1, which has a further film element312in addition to the film intermediate product1represented inFIG.6. This film element312has, in particular in addition to the film element311described inFIG.5, a functional ply5a.

In particular, it is possible for further film elements, which preferably have a decorative layer4a, a functional ply5a, an assistance layer11aand/or a delamination ply18, to be deposited on the receiver film2, preferably in any arrangement. In particular, it is also possible for a film element314to have a printed layer with luminescent, preferably fluorescent, dyes.

A film intermediate product1, which has at least one functional ply5a,5b, is preferably applied to the target substrate by injection of an injection-molding compound, wherein in particular the injection-molding compound forms the target substrate.

Here, the film intermediate product1is preferably used as an insert sheet, in particular with a width of from 10 mm to 800 mm, a length of from 15 mm to 1,200 mm and a thickness of from 20 μm to 300 μm.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.8shows by way of example a possible arrangement of film elements311to314on the receiver film.

Further, a severance7aand a recess6of a film element313are shown by way of example.

Further, it is possible in particular for a donor carrier ply31of a donor film304not depicted here to be detached in such a way that first partial regions20aremain as film elements314on the receiver film2when the donor carrier ply31is detached at least in regions, and optionally second partial regions20bof the donor transfer ply32are peeled off with the donor carrier ply31. The film elements314are preferably similar and/or different from one another. Further, it is possible for the film elements314to be arranged by way of example in a regular one- or two-dimensional grid.

It has proved to be advantageous for severances7a,7band/or recesses6to be introduced at least into the one or more donor films301to304, in particular into the donor transfer ply32, wherein the severances7a,7band/or recesses6are preferably introduced between the first and second partial regions20a,20bof the respective donor transfer ply32.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.9ashows by way of example a film intermediate product1, which has a film element311deposited on a receiver film2. A further film element312is arranged on this film element311.

Furthermore, a further adhesive layer8is deposited, which is preferably deposited on the two film elements311and312. Further, it is possible in particular for the further adhesive layer8also to be in contact with the receiver film2.

The receiver film2is preferably not detachable, preferably not detachable and at least partially transparent, preferably at least partially transparent in the UV range and/or a range visible to the human eye. It is in particular further possible for the receiver film2to be at least partially detachable, preferably for the receiver film2to have a detachable receiver carrier ply21.

A film element311is preferably partially overlapped by another film element312. The partially overlapped film element311preferably overlaps the other film element312completely and/or partially.

Further, optical effects of the further film element312are at least partially recognizable through the partially overlapped film element311, preferably at least partially visible with the human eye.

In particular, the partially overlapped film element311has a replication layer at least in a region overlapped by the further film element312.

The partially overlapped film element311preferably has, on its side facing away from the receiver film2, a layer which is in contact with a side of the further film element312facing the receiver film2, whereby a contact region KB is formed.

Between the layer of the partially overlapped film element311and the layer of the further film element312in contact with this layer, the difference in refractive index is preferably smaller than or equal to 0.2, preferably smaller than 0.1.

It is further possible for the difference in refractive index to be smaller than 0.2, preferably to be smaller than 0.1. This is at least in 50% of the contact region KB. In particular, an HRI layer and/or a metal layer is provided in the remaining regions of the contact region KB.

Further, it is possible for the difference in refractive index to be larger than 0.3, preferably to be larger than 0.5, wherein in particular an HRI layer is provided.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.9bshows a specific design example, which can be produced with the structure fromFIG.9a. A film element311, deposited on a receiver film2, a film element312as well as a film intermediate product1, in which the film element312is deposited on the receiver film2, and in particular on the film element311, such that it partially overlaps with the film element311, are to be seen.

It is in particular also possible for the film element312to be deposited on a receiver film2and for the film element311in the film intermediate product1to be deposited on the receiver film2, and in particular the film element312, such that it partially overlaps with the film element312.

The receiver film2is expediently preferably transparent and/or in particular not depicted here.

Here, the film intermediate product1is shown, in particular starting fromFIG.9ain a view from below. An observer thus looks, in particular when viewing perpendicular to a plane spanned by the film intermediate product1, through the receiver film2and/or through the receiver carrier ply21and/or through the receiver transfer ply22, onto the film elements311,312of the film intermediate product1.

The decorative ply4aof the film element311has several layers311bprovided over part of the surface. The layers311bprovided over part of the surface are in each case preferably arranged in the form of a pattern, wherein the patterns are in particular formed in the shape of a coat of arms, a lion's head and a banner with the lettering “Kinegram”.

A reflective layer, in particular a metallic reflective layer, for example made of aluminum, is expediently arranged on the layers311bprovided over part of the surface, wherein the reflective layer is preferably arranged only in the layers311bprovided over part of the surface.

The layers311bprovided over part of the surface preferably have optically variable effects. The layers provided over part of the surface thus expediently comprise in each case optically active surface structures, which in particular have microstructures.

Further, the film element311preferably has a coloring. The coloring is preferably formed of a glazing varnish layer, which is expediently arranged between the receiver film2and the partially provided layers, with the result that the partially provided layers311bfor example appear in gold colors, in particular when the film element311is viewed in the product100.

The film element311and/or the receiver film2is transparent or semi-transparent at least over part of the surface, at least outside the layers provided over part of the surface.

For example, for this purpose the decorative ply4aof the film element311has a transparent or semi-transparent layer, which is in particular a varnish layer which is arranged at least outside the layers provided over part of the surface.

It is in particular also possible for the decorative ply4aof the film element311to have a transparent or semi-transparent layer, which is in particular a varnish layer, and/or a further transparent or semi-transparent layer, which is in particular a varnish layer, which is arranged on the layers provided over part of the surface.

Further, it is expedient if the receiver film2, in particular the receiver transfer ply22and/or the receiver carrier ply21, has a transparent or semi-transparent layer, which is in particular a varnish layer or a plastic layer.

Regions of the film element312which do not overlap with the reflective layer of the film element311are thus recognizable for the observer, in particular when viewed perpendicular to a plane spanned by the film intermediate product1, in particular recognizable in the film intermediate product1and/or in the product100.

The film element312preferably has optically variable effects. In particular, the film element312has a decorative ply4awith a layer312bprovided over part of the surface, which preferably comprises a metal layer, for example made of aluminum, and in particular acts as a reflective layer. The layer312bprovided over part of the surface is expediently arranged in the form of a pattern, preferably the layer312bprovided over part of the surface forms partially metallized lines. The partially metallized lines preferably form a guilloche.

Optically active surface structures, in particular microstructures, are expediently provided in the layer312bof the film element312provided over part of the surface. The optically active surface structures, in particular the microstructures, generate for example a sequential illumination of the lines, in particular as an apparent movement effect.

As the coloring of the film element311, in particular the glazing varnish layer of the film element311, is not present in the layer312bof the film element312provided over part of the surface, in particular the partially metallized regions of the film element312, the layer312bof the film element312provided over part of the surface appears in a different color from the partially provided layers311bof the film element311. In particular, the guilloche of the film element312appears silver.

For a person observing the film intermediate product1and/or the product100, there are thus no gaps, in particular when viewed perpendicular to a plane spanned by the film intermediate product1, between the layers311bprovided over part of the surface and the layer312bprovided over part of the surface, in particular between the gold-colored layers311bprovided over part of the surface and the silver-colored guilloche.

FIG.10ashows a possible step a), providing a receiver film2, in a top view. In particular, the receiver film2is provided with the running direction19represented, preferably in a roll-to-roll method. For example, the receiver film2already has decorative plies4b.

The receiver film2preferably has register marks13, which are in particular printed, diffractive and/or partially metallized, for a register-accurate depositing of further layers and/or one or more film elements311,312,313,314. It is furthermore possible for register marks to be arranged transverse to the running direction19. Further, it is possible for layers of the receiver film2to take on the function of register marks, preferably diffractive elements of the receiver film2. Further, it is possible for the receiver film2to have one or more decorative plies4b, functional plies5band/or delamination plies.

With respect to the design of these plies, reference is made here in particular to the above embodiments.

FIG.10bshows a possible step c), depositing one or more film elements311,312,313,314, which is or are formed in each case of a cutout of one of the one or more donor films301,302,303, on the receiver film2. Here, for example, the depicted film intermediate product1is produced, which has a receiver film2described by way of example inFIG.10aand various film elements311,312,313,314. The film elements311,312,313,314are preferably deposited register-accurately.

A film intermediate product1preferably has similar and/or different film elements311,312,313,314transverse to the running direction19.

However, it is also possible for further film elements to be deposited on the depicted receiver film2with the deposited film elements311to314before the film intermediate product1is produced, and/or for the film intermediate product1to be used as a donor film301to304or receiver film2in a method for producing a film intermediate product1.

Here, it is preferably possible for the receiver film2to be a hot-stamping film and for step c) to be carried out by means of hot stamping, wherein at least one of the one or more donor films301to304is expediently a hot-stamping film.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.10cshows a possible step b) for producing a film intermediate product1, providing one or more donor films301,302, which are provided for example for depositing the film elements311,312,313,314represented inFIG.10b. The donor films301,302are provided in webs by way of example here. It is possible in particular for further donor films303,304to be provided and/or for further film elements to be deposited.

It is possible here for a step c1), bringing one or more donor films301,302into contact with the receiver film2, to be carried out in step c).

After step c1), it is further possible for a step c2) to be carried out, of detaching, in particular mechanically separating, the donor carrier ply32from one or more first partial regions20aof the respective donor transfer ply at least in regions, in such a way that the one or more first partial regions20aremain as film elements311,312,313,314on the receiver film2.

After step c2), it is further possible for a step c3) to be carried out, which comprises peeling the respective donor carrier ply31with one or more second partial regions20bof the respective donor transfer ply32off the one or more film elements311to314.

The donor film302described above has cutout regions311a, from which in particular the film elements312,313,314described inFIG.10bare deposited on the receiver film2. The depositing on the receiver film2is carried out in the case of a donor film302of the type described above, preferably by means of a form punch, in particular during a hot stamping. The pressure needed for a hot stamping and the heat needed in step c) are preferably generated by means of hot stamping by a heated stamping die.

The donor film301described below has cutout regions311a, from which in particular the film elements311described inFIG.10bare deposited on the receiver film2. Here, the donor film301preferably at least partially has severances7a, which surround the cutout regions311a. The severances7aare preferably introduced by means of punching.

The depositing of the film elements311to314on the receiver film2is carried out, in the case of a donor film302of the type described below, preferably by means of a stamping die, in which the shape of the die can be larger than that of a form punch which would be used in the case of a depositing of a film element with the donor film302described above, in order to deposit comparable film elements on the receiver film2. The pressure needed for a hot stamping and the heat needed in step c) are preferably generated by means of hot stamping by a heated stamping die.

Further, it is possible for a radiation-curable adhesive layer to be printed onto the receiver film2and/or one of the donor films301,302, in particular to be partially coated on, preferably to be coated individually onto one or more first partial regions.

Here, step c) is preferably carried out by means of cold stamping, wherein the one or more donor films301,302are joined to the receiver film2and the adhesive is cured by means of irradiation. During the detachment of the respective donor carrier ply31, the cutouts of the respective donor transfer plies32arranged in the one or more first partial regions20aon which the adhesive layer is arranged remain adhering as film elements311to314to the receiver film2.

Optional adhesion-promoter layers on the receiver film2and/or at least one of the one or more donor films301,302preferably ensure the bond between the individual layers of the receiver film2, the receiver transfer ply22, at least one of the one or more donor films301,302and/or the respective donor transfer plies32.

A web preferably has similar and/or different cutout regions311ato314aand/or cutouts of the one or more donor films301,302in the running direction19and/or transverse to the running direction19.

In particular, a donor film301,302covers only a surface area of from 0.2% to 20%, preferably a surface area of from 0.5% to 5%, of the receiver film2in top view or when viewed perpendicular to the respective donor film301,302and the respective receiver film2when the respective film elements311,312,313,314are deposited.

The advantage is hereby achieved that, to produce the film intermediate product1, there is less wastage of materials of the donor films301,302, in particular in relation to the surface area of the respective film elements311,312,313,314.

The donor films preferably have register marks13, which make a register-accurate depositing of the one or more film elements311,312,313,314on the receiver film2possible. For example, a register-accurate depositing is thereby possible, in particular in a roll-to-roll method, with different feed distances of the donor films301,302, which preferably have smaller distances between the regions311a,312ato be deposited or the register marks13than between the respectively deposited film elements311,312or the register marks13of the receiver film2, and the receiver film2.

The two webs or the two donor films301,302are preferably delivered separately. In particular, the two donor films301,302are manufactured separately.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.10dshows a receiver film2with donor films301,302,303provided strip-shaped.

The depositing of the one or more film elements311,312,313is preferably carried out register-accurate in the running direction19and/or transverse to the running direction19. Here, the web tensions of the respective donor films301to303and/or of the receiver film2are preferably set for a register-accurate depositing of the film elements311,312,313on the receiver film2.

Further, it is possible for the feed distance of the receiver film2and/or of the respective donor film301,302,303to be set for a register-accurate depositing of the film elements311,312,313on the receiver film2.

Further, it is possible for the width of the strip of one of the one or more donor films301,302,303, when viewed perpendicular to the plane spanned by a donor film or by a film element, preferably in a top view as represented inFIG.10d, to vary perpendicular to the running direction19over the length of the strip in the running direction19, preferably for the outline shape of one of the one or more donor films301,302,303to run at least partially non-linearly, preferably in the shape of waves.

The design, in particular the design of at least one film element311,312,313, is effected for example by a partial print during the cold stamping, an only partially deposited hot-stamping adhesive, and/or because of the shape of the stamping tool during the hot stamping. Further, it is possible for the design to be effected by a cutting of the donor film301,302,303. For example, a film element311,312,313, in particular a strip-shaped film element311,312,313, is defined in terms of the extent by the prior cutting of the respective donor film301,302,303in strip form.

In particular, the outline shape of one of the one or more film elements311,312,313, which is or are preferably formed of a cutout of a donor film301,302,303provided strip-shaped, runs in the form of lines, motifs and/or text.

Further, it is possible for one or more of the one or more donor films301to303and/or one or more of the one or more film elements311,312,313, when viewed perpendicular to the plane spanned by a donor film or by a film element, respectively, preferably in a top view as represented inFIG.10d, to have recesses and/or to be broken, preferably by means of recesses6, severances7aand/or voids, as is described in particular inFIG.3ctoFIG.3f.

In particular, the width of the strip of one of the one or more film elements311,312,313, preferably perpendicular to the running direction19, lies in a width range of from 0.5 mm to 10 mm, preferably from 1 mm to 5 mm. Here, the width of the strip of one of the one or more film elements311,312,313lies for example in the named width range locally and preferably deviates from it locally.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.10eshows by way of example a singulation after step c), in particular by cutting and/or punching, of the receiver film2with the one or more film elements311to314. A strip-shaped web is preferably and/or several strip-shaped webs, which preferably in each case form one film intermediate product1, are preferably cut out of the receiver film2with the film elements311to314.

After step c) and before the singulation, a single- or multi-layered further adhesive layer8is preferably deposited, as described above, on the receiver film2and/or the one or more film elements311to314.

It is also possible for at least one layer of the further adhesive layer8to be formed from the donor detachment layer33.

In particular, the further adhesive layer8is deposited in such a way that differences in thickness of the film intermediate product1are at least partially compensated for. Further, it is possible for the width of the strip of the film intermediate product1, when viewed perpendicular to the plane spanned by film intermediate product1, preferably in a top view as represented inFIG.10e, to vary over the length of the strip, preferably for the outline shape of the film intermediate product to run at least partially non-linearly, preferably in the shape of waves.

It is possible, in order to produce a product, for the film intermediate product1to be applied to a target substrate, preferably to be applied to a target substrate in a laminator, a hot-stamping device, a cold-stamping device and/or in an application system.

Further, it is possible for the film intermediate product1to be applied to the target substrate by injection of an injection-molding compound, in particular wherein the injection-molding compound forms the target substrate. Here, it is possible in particular for the film intermediate product1to be deformed beforehand, in particular to be deep drawn.

The film intermediate product1is preferably applied to an injection-molding compound after the singulation as an insert sheet, and has a width in the range of from 10 mm to 800 mm and a length in the range of from 15 mm to 1,200 mm. Here, in particular, the thickness of the film intermediate product1is preferably 20 μm to 300 μm, wherein the thickness in particular varies over the width and length of the film intermediate product1.

In particular, depending on the target substrate to which the film intermediate product1is applied, differences in thickness of the film intermediate product1are further concealed, with the result that they do not become conspicuously visible.

The film intermediate product1is preferably applied to a porous target substrate, such as for example paper, which absorbs the adhesive differently depending on the local pressure, with the result that more adhesive penetrates into the target substrate in regions of the film intermediate product1with larger thicknesses. In particular, this prevents possible disruptive steps due to the different thicknesses from being recognizable on the surface of the product.

In the case of embedding in a layered composite, such as for example laminating into a polymer layered composite, or also in the case of back-injection molding by means of an injection-molding compound, in particular differences in thickness are not very relevant for the product, as they are compensated for to a substantial degree by flowable material. In addition, a levelling of the surface can be achieved by the adhesive running during the application to the target substrate.

In particular, the film intermediate product1is used to produce a surface of the product and is applied to a target substrate, for example a piece of paper, a piece of cardboard, a plastic film, a substrate made of one or more plastic and/or paper plies, a substrate comprising one or more decorative plies and/or a carrier ply.

The total thickness of the single- or multi-layered further adhesive layer8is preferably more than the maximum difference in thickness between the regions with the one or more film elements311to314and those regions without film elements311to314, in order that the contours of the film elements311to314are not conspicuously recognizable on the surface.

The total thickness of the single- or multi-layered further adhesive layer8is preferably more than the difference between the largest thickness of the film intermediate product1and the smallest thickness of the film intermediate product1, in order that the contours of the film elements311to314are not conspicuously recognizable on the surface.

The thickness of the further adhesive layer8is preferably coated on, in particular partially, in such a way that it is thicker in the regions of the receiver film2without film elements311to314and/or in regions with the smallest thickness of the film intermediate product than in the regions of the receiver film2with film elements311to314and/or in regions with the largest thickness of the film intermediate product1.

An additional auxiliary layer, which expediently forms a layer of the single- or multi-layered adhesive layer8which compensates for differences in thickness of the film intermediate product1, is preferably coated on partially registered. The single- or multi-layered further adhesive layer8is then preferably coated on with a homogeneous layer thickness. For example, after the additional auxiliary layer has been coated on, at least one layer of the further adhesive layer8is coated on with a homogeneous layer thickness.

With respect to the softening temperature of the receiver adhesive layer24, the donor adhesive layer34and the further adhesive layer8, reference is made at this point in particular to the embodiments inFIG.6.

In the case of a transfer by means of radiation-curing adhesive, in particular by forming the donor adhesive layer34as a radiation-curable adhesive and/or forming the receiver adhesive layer24as a radiation-curable adhesive and/or forming the further adhesive layer8as a radiation-curable adhesive, advantages result because the adhesive is thermally relatively stable after curing and/or only comparatively little heat and pressure is introduced during the transfer to the target substrate.

With respect to the specific design of the plies or layers, as well as further plies or layers, reference is made in particular to the above embodiments.

FIG.11ashows by way of example a receiver film2with a film element311transferred flat. Here, the donor film301is a donor transfer film. Further, the receiver film2has a delamination ply18. A delamination ply which allows a locally partial delamination in order to act as protection against manipulation is particularly advantageous. It is also possible for the donor film301to have a delamination ply18.

The thickness of the donor transfer ply32, preferably the thickness of the donor carrier ply32added to the thickness of the further optionally present adhesive layers24and34, advantageously lies in a range of from 1 μm to 15 μm, preferably in a range of from 2 μm to 10 μm. The thickness of the receiver carrier ply preferably lies in a range of from 5 μm to 150 μm, preferably in a range of from 10 μm to 50 μm.

Here, the advantage results that features on transfer films are manufactured independently of the properties and/or the process capability, preferably the requirements of production, of the delamination ply.

A combination of optical effects, which are in particular provided with the one or more donor films301to304, is thereby preferably produced with the function of a delamination ply, which is provided in particular through the delamination ply18of the receiver film2. In particular, such a combination is not possible in the case of production on one film and/or can only be produced at higher cost, with more waste, with poorer protection against forgery and/or in lower quality.

In particular, a film element311to314has optical effects which have a very high replication quality, whereby high temperatures and a high pressure are needed. Due to the high pressure and the high temperatures, however, the delamination ply would be damaged if manufactured on the same film.

FIG.11bshows by way of example a receiver film2with film elements311,312,313transferred strip-shaped. Here, the donor film301is a donor transfer film. Further, the receiver film2has a delamination ply18. It is also possible for the donor film301to have a delamination ply18.

FIG.11cshows a film intermediate product1which has several labels15in a top view. The labels15in each case comprise at least one cutout of the receiver film2and at least one film element311to314.

FIG.11dshows the film intermediate product1represented inFIG.11cin a schematic sectional representation.

In order to produce such a film intermediate product1, the receiver film2is preferably coated onto a carrier40, in particular a siliconized carrier. In particular, it is possible for a further adhesive layer8, in particular a PSA adhesive layer (PSA=Pressure Sensitive Adhesive), to be applied to the film elements311after step c), for the receiver film2with the deposited film elements311to314to be laminated by means of the further adhesive layer8onto the carrier40, and for the receiver film2optionally to be punched and weeded. In particular, the receiver film2is punched and weeded before being joined to the carrier40and/or punched and weeded after being joined to the carrier40.

The labels15can preferably be detached from the carrier40nondestructively by means of the PSA adhesive layer.

Further, it is possible for the further adhesive layer8, which is in particular a PSA adhesive layer, to be applied to the carrier40, the receiver film2and/or partial regions of the receiver film2.

One or more labels15are preferably detached from the carrier40and applied to a further object, wherein the delamination ply18is provided to bring about a delamination of the label15, and/or brings about a tearing of layers of the label15, in the case of an attempt to detach the label15from the further object.

FIG.12ashows by way of example the provision of a receiver film2, which is in particular a receiver laminating film with a receiver carrier ply21, and an enlarged view of a feature region MB of a decorative ply4b, which is preferably arranged on the receiver carrier ply21of the receiver film2.

The decorative ply4bpreferably has at least one feature region MB, in particular a plurality of feature regions MB. The decorative ply4bpreferably forms one or more security features by means of the feature regions MB.

A feature region MB preferably has at least one first decorative element17b. In particular, several feature regions MB and/or several first decorative elements17bare provided in a regular one- or two-dimensional grid.

The decorative ply4bpreferably further has, in the feature regions MB, an at least partially transparent layer, at least one at least partially embellished transparent reflective layer and/or at least one at least partially embellished metallic reflective layer and/or an at least partially embellished print.

Further, it is possible for the receiver film2to have an assistance layer11b, in particular an adhesion-promoter layer.

It is also possible for register marks to be provided on the receiver film2.

A film intermediate product1, which is used to produce a security document, in particular a banknote, is thus preferably produced.

FIG.12bshows by way of example a feature region MB of the receiver film2represented enlarged inFIG.12a, wherein a second decorative element17ais deposited, which is formed by a film element311, wherein the film element311is formed of a cutout of one of the one or more donor films301to304, which is in particular a donor transfer film. In particular, the second decorative element17adiffers from the first decorative element17b.

Preferably, the film element311has a printed layer, in particular a varnish layer, and/or an optically diffractive element, which consists of a replication layer with a molded diffractive surface structure, which is covered by a reflective layer at least in partial regions.

It is further possible for the first and second decorative elements17a,17bto at least partially overlap mutually and/or among one another and/or for further decorative elements to be applied which mutually overlap and/or overlap the first and/or second decorative elements17a,17b.

The film intermediate product1, preferably when viewed perpendicular to a plane spanned by the film intermediate product, preferably top view as shown inFIG.12b, preferably has at least two different directly adjoining, at least partially overlapping and/or neighboring decorative elements. These are preferably formed in each case by at least one film element311,312and/or by the receiver film2.

The receiver film2and the one or more donor films301,302are preferably delivered separately. In particular, in each case the donor films301,302and the receiver film2are manufactured separately. In particular, the advantage thus results that, when viewed perpendicular to a plane spanned by the film intermediate product1, preferably top view as shown inFIG.12b, at least two different decorative elements, which would be incompatible in the case of a manufacture on one film and/or would at least mean an increase in the manufacturing time, a reduction in the quality of the features and/or more waste, are arranged directly adjoining one another, at least partially overlapping and/or neighboring.

The decorative elements17a,17bpreferably consist in each case of regions of the decorative ply4a,4bof the receiver film2and/or of the one or more donor films301to304, which differ from the surrounding regions in a contrasting manner. Thus, for example, a varnish layer of the decorative ply in the region of the decorative elements is colored differently from the surrounding regions and/or is only provided in the region of the decorative elements.

Likewise, for example, a surface structure, for example a diffractive surface relief, of the decorative ply4a,4bcan be provided only in the region of the decorative elements17a,17bor have a different surface relief from the surrounding regions. For example, a metallic reflective layer of the decorative ply4a,4bcan also be provided only in the region of the decorative elements17a,17b, but not in the surrounding regions. The decorative ply4a,4bis preferably formed transparent in the region outside the decorative elements17a,17b.

Likewise, a functional ply5a,5bof the one or more donor films301to304and/or of the receiver film2can be formed correspondingly, that the function, for example an electrical function, is only formed in the region of the decorative elements17a,17b.

Thus, it is possible for example for an electrical component, for example a display and/or an antenna, to be formed only in the region of the decorative elements17a,17bin the functional ply5a,5b.

Further, it is possible for the decorative elements to be provided by the applied cutouts of the one or more donor films301to304and for their shape thus to be defined by the cutout and not by a corresponding design of the decorative ply4aof the donor film301to304.

A film intermediate product1, which is used to produce a security document, in particular a banknote, an ID document, a credit card and/or a bank card, is thus preferably produced.

Further, it is possible for a film intermediate product1to be produced which has in particular a security feature in the form of a thread, the width of which preferably lies in a range of from 0.5 mm to 15 mm, preferably in a range of from 1.5 mm to 7.5 mm.

It is possible here for an additional film to be applied to the receiver film2with the film elements311to314after the film elements311to314have been deposited on the receiver film2. The additional film consists in particular of PET and preferably has a thickness in the range of from 5 μm to 50 μm, preferably in the range of from 5 μm to 20 μm. This results in particular in the advantage that the film elements311to314are enclosed and protected.

Further, it is possible for a single- or double-sided adhesive coating to be deposited, in order to ensure the anchoring in the target substrate, for example as a thread in the paper, or embedded in plastic. The film intermediate product1is then cut into strips.

In particular, the second decorative elements17acover only a surface area in the range of from 10% to 90%, preferably a surface area in the range of from 20% to 80%, of the receiver film2in a top view or when viewed perpendicular to the receiver film2after the respective film elements have been deposited.

The decorative elements17aof the one or more donor films301to304can be transferred to a laminating film as receiver film2in such a way that the laminating film is not covered by the decorative elements17aof the donor films301to304in partial regions. An adhesive layer is then coated on flat.

During a subsequent application to a target substrate, the adhesive layer joins the laminating film and the target substrate in these partial regions directly, without interjacent donor transfer plies32, with the result that a good adhesion is achieved. It is particularly advantageous if the features of the donor film, in particular the film elements311to314, preferably the decorative elements17a, are transferred as a filigree pattern. The surface coverage advantageously lies between 10% and 90%, further between 20% and 80%.

FIG.13ashows by way of example a film intermediate product1applied to an injection-molding compound SGM, wherein the film intermediate product1is in particular back-injection molded with the injection-molding compound SGM.

Here, the film intermediate product1has a receiver film2as receiver transfer film, wherein at least one film element311to314is deposited on the receiver transfer film22. In particular, the receiver film2has a receiver carrier ply21, which preferably protects the receiver transfer ply2against damage. The receiver carrier ply21is preferably securely joined to the receiver transfer ply2and/or designed detachable.

The film intermediate product1preferably has at least one functional ply5a,5b, for example a display, and/or at least one decorative ply4a,4b, for example a varnish layer.

FIG.13bshows the product100depicted inFIG.13a, wherein the receiver carrier ply21has been detached.

It is in particular also possible for the film intermediate product1to have been laminated, cold stamped and/or hot stamped onto a product and/or target substrate beforehand.

It is in particular possible for the receiver transfer ply22to have a surface structure, in particular a surface relief, after the receiver carrier ply21has been detached. For this purpose, a printed varnish is preferably arranged between the receiver carrier ply21and the receiver transfer ply22, in particular on the receiver carrier ply21. When the carrier ply is peeled off, the varnish printed on the receiver carrier ply21is likewise peeled off with it, and a negative structure of the varnish printed on the receiver carrier ply21is present on the surface of the receiver transfer ply22.

Further, it is possible for a replication layer, which is preferably radiation-curable, to be arranged between the receiver carrier ply21and the receiver transfer ply22, in particular on the receiver carrier ply21. A surface structure, which generates a decorative effect after the receiver carrier ply21and the replication layer have been detached, is preferably introduced into this replication layer.

LIST OF REFERENCE NUMBERS

1film intermediate product2receiver film21receiver carrier ply22receiver transfer ply23receiver detachment layer24receiver adhesive layer301,302,303,304donor film311,312,313,314film element31donor carrier ply31afurther donor carrier plies32donor transfer ply33donor detachment layer34donor adhesive layer4a,4bdecorative ply5a,5bfunctional ply6recesses7a,7bseverances8further adhesive layer9a,9breplication layer10a,10breflective layer11a,11bassistance layer12a,12bcarrier ply13register marks14peeling angle15label16further carrier ply17asecond decorative elements17bfirst decorative elements18delamination ply19running direction20afirst partial regions20bsecond partial regions311acutout regions40carrier311b,312blayers provided over part of the surfaceKB contact regionMB feature regionSGM injection-molding compound100product