Source: http://russianpatents.com/patent/251/2517134.html
Timestamp: 2018-07-17 15:41:47
Document Index: 783055893

Matched Legal Cases: ['§ 39', '§ 39', '§ 39', '§ 39', '§ 39', '§ 39', '§ 39', '§ 39']

Making of protection element and retransfer film
The invention relates to a method for the protection element and the conversion film, in particular a foil for hot stamping, to transfer one or multiple layered elements on the target substrate.
To apply an element of protection for valuable documents such as passports, credit cards or banknotes, used, among other things, transfer film, in particular, foil for hot stamping. So, as an example, patent document DE 10013410 A1 describes obtaining a multilayer composite which forms the identity card, credit card or the like, in which the protection element is injected between two adjacent coating layers, with specified protection element is formed with a decorative layer of foil for hot stamping. The protection element includes a transparent lacquer layer, in which the imprinted structure with diffractive optical activity. In addition, the transparent lacquer layer supply increases reflectivity layer is a metal layer or a dielectric layer. In addition, the protection element has an adhesive layer with which the protection element is fixed on the lower cover layer. For this purpose the foil for hot stamping is placed on the lower coating layer and zapressovyvajut on the top layer using the relief-forming ..... the PA, with heat and pressure in the region in which the decorative layer foils for hot stamping should be moved to the covering layer. When removing the carrier foil for hot stamping this section of the decorative layer remains bonded to the lower cover layer, and the remaining parts of the decorative layer are removed together with the carrier film.
During this transfer of the decorative layer foils for hot stamping with the carrier film on the substrate, the decorative layer film for embossing tear along the boundary line defining the area of the decorative layer, which should be transferred. This may lead to razlamyvaniju edge, especially when they use conversion film having a thicker layers, and layers that have specific properties, for example, layers that have a particularly high impact strength.
Therefore, the object of the invention is the view of an improved method of producing a decorative element, or an element of protection and improved conversion film.
This goal is reached by way of obtaining protection element, and the method includes a stage in which to prepare a base film having a first carrier film and a single - or multi-layer decorative layer to separate the decorative layer from the first carrier film and the first adhesive layer of the NAS is placed on the first surface of the carrier film, looking from the decorative layer, and the second carrier film is applied so that the first adhesive layer placed between the first carrier foil and a second carrier film and the first adhesive layer is activated in the first area, which at least partially covers the at least one first area of the base film and the first adhesive layer is not activated, do not provide, provide only partial or inactivate, however, in the second region adjacent to the region, and the first carrier film, at least partially, cut along the boundary line defining at least one the first section, and separating at least one first section from the second section of the base film, in which the second part of the base film, and the specified second part includes a second section, is removed from the second carrier film, and at least one section of the base film is attached to the second carrier film by means of the activated first adhesive layer, and the first part of the base film, and the specified first part includes at least one first section remains on the second carrier film. In addition, this goal is achieved through conversion of the film, particularly film for hot stamping, to transfer one or multiple layered elements on CE is ewww substrate, moreover, the transfer film has a base film having a first carrier film and a single - or multi-layer decorative layer to separate the decorative layer from the first carrier film and the transfer film additionally has a second carrier film and the first adhesive layer applied on the first surface of the carrier film facing away from the decorative layer, the first adhesive layer is located between the first carrier foil and a second carrier film, in which the first adhesive layer is activated in the first area, which at least partially covers the at least one first area of the base film so that the base the film is attached to the second carrier film by at least one first segment and the first adhesive layer is not activated, do not provide, provide only partial or inactivate, however, in the second section, adjacent to at least one first area, and in which the first carrier film is cut along the boundary line that defines at least one first section and separating at least one first section from the second section of the base film, and a part of the base film, which includes the second area is removed from the second carrier film.
The invention enables the creation of a protection element, which can be p rennen on the protected document for example, a banknote or identity card, using the ordinary method of transfer, and at which avoid the occurrence of "RuslanaTube" as a result of tearing of the decorative layer in the outer region of the transferred multilayer element. In addition, it is possible that the adhesive and structural properties of the decorative layer can be selected on the merits regardless of the requirements of the migration process, and this plan can be further improved, for example, optical characteristics, resistance to environmental conditions and protection against counterfeiting and manipulation of the protection element. Furthermore, the method according to the invention is distinguished by the fact that it further increases the accuracy of the register in which the security elements can be transferred to the target substrate.
In addition, using one form of the stamp can be transferred to various forms of conversion film. The outer shape of the pads do not have to match the outer shape of the stamp for hot stamping. In this case, it is preferable to choose a stamp for hot stamping larger than the amount of the base film, which should be transferred. As an example, the star-shaped plate is transferred using a larger round stamp. Along with the stamp for hot stamping, which is rosedene hot stamping use of clamping pressure and heat, it is also possible to use an ultrasonic stamping stamp with, respectively, arranged a support for the back, used for holding hot stamping using pressure for stamping and ultrasound as alternative forms of energy.
The predominant configuration of the invention are defined in the dependent patent claims.
In accordance with one preferred embodiment of the invention, the base film has a separation layer disposed between the first carrier film and a decorative layer. In addition, you can also choose the material and/or structure of the surface of the first carrier film and those for layer decorative layer facing the first carrier film, so that the decorative layer can be separated from the first carrier film. This provides the possibility that using conversion film according to the invention on the target substrate can be applied to the area of the carrier film, which includes only the area of the decorative layer and - optional - adhesive layer and does not include as an incidental specified section of the first carrier film. It is the predominant particularly then, when it is scheduled to transfer to the target substrate is thin and inherently mechanically fragile layers.
In accordance with additional provision of the equipment of the embodiment of the invention, the separating layer between the first carrier film and a decorative layer is not contained. In accordance with this embodiment, the first adhesive layer and second adhesive layer placed between the decorative layer and the target substrate are chosen so that the adhesive strength of produced activated first adhesive layer between the first carrier foil and a second carrier film, was less than the adhesive strength due to the activated second adhesive layer between the decorative layer and the target substrate. This makes it possible after activation of the second adhesive layer to remove the second carrier film with the first section of the base film and thereby cause the entire first section of the base film, that is, the decorative layer and the first carrier film on a target substrate by using a transfer process. Thus, the method according to the invention provides the ability to transfer mechanically stable elements of the film on the target substrate. In this case, additionally, you can transfer these elements of film on the bill not only in the form of a tape, but any desired shape, for example, in the form of plates.
In this case, in particular mainly carry the film element on the window banknotes and thereby fully or partially close or cover the window. Thus the can is about to apply the security features with the properties of transparency, with various images, visible when viewed from above and consideration through, with different images when observing the front side and the rear side of the substrate, or moire patterns. Possible combinations of different optical effects. The generic term "window" is supposed covering the transparent or translucent region of the substrate and/or substrate, having one or multiple openings or having one or multiple cuts.
Thus, it is possible to choose the configuration of the film elements smaller in relation to their longitudinal extent in order to minimize deformation of the banknote, due to different sizes of paper and film, thanks to a smaller covered area. In this case, the portion of the element protection, which covers the area of the window can be either part of the second adhesive layer, or may not be adhesive may be covered with a varnish partially or completely over the entire area or can be stamped partially or fully throughout the area.
To further minimize the deformation of the banknote due to the different sizes of paper and film, in addition is the predominant application of the sealing layer on the side of the target substrate, which is opposite the film element with the specified sealant layer before occhialino has an area with the size, similar or identical to the area of the film element, and is thus largely overlaps film element so that the target substrate was coated equally on both sides of the film element and the sealing layer. The thickness or strength of the sealing layer may be identical to the thickness or strength of the film element or different from them. In this case, the shape of the outer contours of the film elements on opposite sides of the target substrate may vary. In this case, the sealing layer may be formed by the element sealing tape or sealing varnish layer. The sealing layer is primarily intended for sealing areas of the target substrate that surround the window, but can also be created in the area of the window. As an example, the sealing layer can either be applied before the introduction of the window, for example, by punching or cutting, and can be cut and removed together with the target substrate during the injection of the window. An alternative consists of applying a sealing layer after the introduction of the window so that the sealing layer also covers the free rear side of the film element in the area of the window. In this case, the sealing layer may likewise be covered especially perpend the circular edges of the cut window in order to protect them from moisture. The sealing layer in the same manner as film element can have security features that can overlap elements of the protection film element to numerous security features in combination could, in particular, to create optical effects.
In addition, you can also create additional protective sign by configuring the shape of the contour of the portable film element. As an example, the shape of the path can be repeated filigree elements and/or items with small parts. In this case, the shape of the transferred film element may be similar to the shape of the window or different from it.
Resulted in deposition of the first adhesive layer on the first carrier film and then applying a second carrier film on the first adhesive layer. However, you can also apply a first adhesive layer on the second carrier film and then apply a film element includes the second carrier film and the first adhesive layer on the first carrier film, and thereby the first adhesive layer applied on the first carrier film using the second carrier film.
In accordance with one preferred embodiment of the invention, the first adhesive layer using an adhesive layer is, which can be activated by electromagnetic radiation, in particular, an adhesive layer consisting of the adhesive means, activated by ultraviolet radiation, which can be activated by irradiation with UV light. First, it provides the advantage that the activation of the first adhesive layer in the first region can be accurately adjusted purposeful way. In addition, it was found that, when using the adhesive layer of this type can be reliably prevented from peeling of the first carrier film from the second carrier film during the subsequent transfer process, and thus can be additionally improved the result of the migration.
The first adhesive layer is preferably applied on the surface of the carrier film that is opposite the side facing the decorative layer on the entire area of the at least one first section and the second section. In this case, then subsequently carry out the activation of the first adhesive layer in the first region to remove the second part of the base film. In this case, the first adhesive layer can be applied on the first carrier film, for example, using the method of printing, for example, gravure printing or screen printing, but also irrigation method, nabrasyvaniem or distribution using a squeegee.
The first adhesive layer before occhialino activate irradiation in the first area after the application of the second carrier film so to the second carrier film is stuck to the first carrier film in the first region. In this case, the material of the first adhesive layer is preferably chosen with respect to the first carrier foil and a second carrier film, so that adhesion between the first carrier foil and a second carrier film after activation of the first adhesive layer, even at room temperature (20°C)was higher than the adhesion is provided by a dividing layer between the decorative layer and the first carrier film. Furthermore, the material of the first adhesive layer is preferably chosen with respect to the first carrier foil and a second carrier film, so that adhesion between the first carrier foil and a second carrier film with neaktivirovannye the first adhesive layer was lower than the adhesion is provided as a separating layer between the first carrier film and a decorative layer, at room temperature (20°C)and at a temperature of embossing (180°C).
It has also proven advantageous that the characteristics of the adhesion between the first adhesive layer and the first and/or second carrier film can be adapted to application of primers, activators gluing, or by corona treatment, flame or plasma treatment of the first and/or second carrier film.
In accordance with one specific note is rnym of the embodiment of the invention, the first adhesive layer is irradiated by a radiation source placed at a distance in the direction of the second side of the carrier film that is opposite the side facing the decorative layer. In this case, the radiation source is preferably placed at a distance of more than 10 mm from the second carrier film. As a radiation source, preferably using a source of UV radiation, which irradiates a first adhesive layer collimated light, preferably UV light. As an example, as a radiation source suitable for this or suitable UV lamp placed downstream collimator or even a laser.
Such an impact on the first adhesive layer gives an opportunity to choose the exposure of the first adhesive layer regardless of the configuration of the decorative layer on the base film. In this case, the second carrier film preferably consists of a material that is mostly transparent for radiation with a wavelength in the range of the radiation source used for irradiation.
Selective exposure of the first adhesive layer in a desirable range, for example, selective irradiation of the first adhesive layer in the first area to activate the first adhesive layer in the first region can be obtained by the corresponding movement of the radiation source or by placing fot the template along the beam path between the radiation source and the first adhesive layer.
In addition, you can also deactivate the first adhesive layer exposed in the second region. For example, you can use an appropriate adhesive means to the first adhesive layer, which adhesive means may be removed using, for example, UV radiation. In addition, for the first adhesive layer can also be applied UV-activated adhesive means, and the adhesive agent is cured by irradiation of UV-light and to irradiate the first adhesive layer before applying the second carrier film in the second region. Thus, the first adhesive layer utverjdayut before applying the second carrier film in the second region so that after application of the second carrier film adhesion of the second carrier film in the second region becomes impossible, since the first adhesive layer has already been overiden and thereby deactivated in the specified field.
In accordance with one preferred embodiment of the invention, as a radiation source using a laser, and the laser is controlled so that the first adhesive layer is irradiated in the first region but not in the second region, and/or irradiated in the second region but not in the first area. This can be obtained, for example, a corresponding movement of the actuator, which determines the position of the laser or the angle of the disturbances is possible laser beam.
In accordance with additional preferred exemplary embodiment of the invention, the beam path between the radiation source and the first adhesive layer place the photomask, and a specified photomask give this form and is positioned so that the first adhesive layer is irradiated in the first region but not in the second region, or the first adhesive layer is exposed to radiation in the second region but not in the first area. In this case, the photomask can be a part of the drum or belt exposure device, for example, through which pass the film tape formed from the second carrier film, the first adhesive layer, the second carrier film, a separation layer and a decorative layer.
In accordance with additional preferred exemplary embodiment of the invention, the decorative layer is used to control the irradiation of the first adhesive layer.
For this purpose, the first adhesive layer is preferably irradiated by the radiation source placed towards the side of the decorative layer that is opposite the side facing the first carrier film, and the specified source of radiation located at a distance from the decorative layer. Thus, the first decorative layer is placed in the laser beam between the source of radiac the and and the first adhesive layer. The decorative layer preferably has an opaque layer located in the first or second region and is not provided for in the second or first region, respectively, and the layer used as the mask layer to adjust the irradiation of the first adhesive layer. Thus, for example, additionally be used to control irradiation of the first adhesive layer, a metal reflective layer as a masking layer. This allows you to adjust exposure of the first adhesive layer with precise registration relative to the composition of the decorative layer.
In the first stage of irradiation, before applying the second carrier film, the first adhesive layer is preferably irradiated by the radiation source placed towards the side of the decorative layer that is opposite the side facing the first carrier film, and the specified source of radiation is placed at a distance from the decorative layer, through the decorative layer acting as a mask layer, and inactivate the second region. In the second stage of exposure, after application of the second carrier film, the first adhesive layer is irradiated by a radiation source placed towards the side of the second carrier film, which is opposite the side facing the first carrier film, and the decree of the config radiation source placed at a distance from the second carrier film, and activate in the first area.
Exposing the first adhesive layer may be as described above is carried out in one stage. However, we can also perform exposure in several stages. Thus there is the possibility that, for example, in the first stage, exposing the adhesive layer to really activate, but utverjdayut adhesive means not yet fully. Then, after removing the second portion of the base film, sequentially irradiate the rest of the film with the second carrier film and the first part of a base film, resulting in a completely utverjdayut the first adhesive layer.
In accordance with an additional preferred embodiment of the invention, the decorative layer has a label, which can be used to determine the first and second regions of the first adhesive layer and/or to determine the first and second sections of the base film. Therefore, these labels serve as register marks. The label can be formed from printed material, from the surface topography of magnetic material or electrically conductive material. Thus, the label can represent, for example, optically read registration marks, which differ from the background in relation to their color code them opaque or reflective characteristics. Labels can also be macroscop the ical or to have a structure with a diffractive relief, which reflects incident light in a preset range of angles and optically different from the background region due to these properties. However, the registration marks can also be a register mark, which can be detected by a magnetic sensor or a sensor which detects the electrical conductivity. Label detected, for example, using an optical sensor, and the displacement of the carrier film, the activation of the first adhesive layer, the deactivation of the first adhesive layer and/or applying the first adhesive layer is then controlled by the labels. Thus, optically read register mark has, for example, a decorative layer, which controls the irradiation of the first adhesive layer and, preferably, also the cutting of the first carrier film along the boundary line between the at least one first area and the second area. Also it is possible to achieve as accurate register activate the first adhesive layer, and the cutting of the carrier film with precise registration relative to the composition of the decorative layer.
The label is preferably placed in the second area of the base film. In this case, the labels can be given the shape of, for example, lines or strips, which are preferably transversely relative to the longitudinal direction N. the essence of the film, which forms the base film. In this case, the label is preferably placed between the first two areas of the base film.
In addition, for each of the first side of the base film preferably dedicate one or multiple registration marks.
In addition, the first adhesive layer may also be formed by a layer of hot-melt adhesive means or adhesive layer, which is activated by pressure. In addition, the first adhesive layer may also be formed as a layer of adhesive means with latent reactivity, preferably in the form of a layer of hot-melt adhesive means with latent reactivity. An adhesive layer with a latent reactivity represents an adhesive layer, which is not yet fully cures after activation and full curing and which thereby develop full adhesion is achieved only after a predefined period of time has elapsed from activation at pre-defined environmental conditions. If, for example, using an adhesive layer of the hot-melt adhesive means with latent reactivity or adhesive layer of the adhesive cold curing with latent reactivity, the adhesive layer in the first stage, activate fastestmirror and/or pressure and in this case receive between 10% and 90% of the maximum adhesion strength. After a pre-set time, depending on the composition of the adhesive means, for example, from 10 minutes to 72 hours, the adhesive then cures and reaches its full adhesive strength. So, as an example, after removing the second portion of the base film, the rest of the film with the second carrier film and the first part of the base film can stand in for a pre-determined time at room temperature and, if appropriate, an elevated temperature to otvetit thus obtained adhesive layer with a latent reactivity. Activation of the first adhesive layer in this context should be understood in particular as meaning the effect on the adhesive layer, which makes the adhesive layer to initiate a chemical reaction that leads to at least 10%increase increase in adhesion strength after chemical reaction is largely completed.
Used adhesive means with latent reactivity can also be microencapsulating reactive adhesive means, what can be obtained, for example, under the trade name Purbond HCMO company Ebnöther AG, Sempach, Switzerland. Such adhesive may be applied to the first or the second carrier film, for example, by the method of powder coating, when the temperature is Ah roughly between 60 and 70°C, moreover, fixation, which occurs at this temperature, forms a similar lacquer adhesive layer, which is not yet activated. By exposure to heat and/or pressure, the microcapsules are destroyed, opened, and the adhesive agent is cured in this field.
In accordance with one preferred exemplary embodiment of the invention, the first adhesive layer consists of a hot-melt adhesive means, and the first adhesive layer is activated with a heated stamp for stamping in the first region but not in the second region, before removing the second portion of the base film.
In addition, is also advantageous if the first adhesive layer inactivate the second region using the imprinter decontamination layer or the first adhesive layer propective on the first and/or second carrier film in the first region but not in the second region. In addition, the first adhesive layer may also be coated with various surface density in the first region and the second region so that the average adhesive strength per unit area, in particular, on cm2differs in the first and second regions. In this embodiment, the first adhesive layer is preferably printed in the form of bitmap images in the first and/or second region in which the difference of surface tightly the ti can be obtained by variation of the sizes of the dots and/or values of the width of the raster between the points of adhesive. In addition, for this purpose can also be applied to the adhesive layer on the whole area of the first region, and apply the adhesive only in the form of dots in the second area, or not apply a first adhesive layer to the second area and to apply the adhesive layer in the form of dots in the first region. In this case, the average size of the filling of the first and/or second carrier film, the first adhesive layer in the first region differs from that in the second region by at least 15%. These techniques offer the possibility of achieving the advantages of the invention are economical by using a method of printing, for example, using gravure printing.
The second carrier film is preferably applied to the base film with two located on the two sides of the rollers.
In accordance with one preferred exemplary embodiment, the decorative layer, the separator layer and the first carrier film is completely cut along the boundary line that defines at least one first section. In this case, along the way may also be partially cut by the second carrier film. However, in this case it is preferable to be careful to ensure that the second carrier film is cut to the extent of less than 50%, preferably to an extent of less than 90%.
The first carrier film preferably the slit is jut by stamping, for example, using a rotating cutting of a stamp, or with a laser.
The first carrier film is preferably cut in register with the boundary line between the first and second regions. On the other hand, the method according to the invention does not require high accuracy of registration between the process in which forming the first adhesive layer (display, printing, embossing), and the process of cutting (punching), so can be applied economical processes on an industrial scale.
In addition, it is advantageous to film element formed of a base film, a second carrier film and the first adhesive layer, were processed using the stamp for hot stamping, which simultaneously activates the first adhesive layer in the first area and at least partially proshtampovyvajte through the first carrier film along the boundary line that defines at least one first section. This is a result of the very high accuracy of registration between the two processes and, in addition, reduces the number of process steps.
In accordance with one preferred exemplary embodiment of the invention, after removing the second portion of the base film, the rest of the film with the second carrier film and the first part of a base film is used as conversion film, often the spine, foil hot stamping, to protect valuable documents. This transfer film creates a protective element for protecting valuable documents.
In addition, this transfer film can have a lot of first sections, each of which includes a protective element for protecting valuable document, which is used by transferring the protected document for the protection of the valuable document.
For this purpose, after removing the second portion of the base film, the rest of the film with the second carrier film and the first part of the base film is placed on the target substrate, one or multiple first sections of the base film is applied on the target substrate by activation of the adhesive layer located between the decorative layer and the target substrate, and a multilayer element includes the first carrier film, the first adhesive layer and the second carrier film is removed with a decorative layer applied to one or multiple first base stations of the film.
For this purpose, the second adhesive layer applied on the other side of the decorative layer that is opposite the side facing the first carrier film, and the specified second adhesive layer preferably is a layer of hot-melt adhesive means. In addition, the second adhesive layer may be a layer of adhesive means hall is underwater curing or layer of hot-melt adhesive means with latent reactivity.
For the first adhesive layer and second adhesive layer preferably use different adhesive means. For example, it is possible to apply the adhesive means cold curing of the first adhesive layer and the hot-melt adhesive agent for the second adhesive layer. If the layers of hot-melt adhesive means is used as the first and the second adhesive layer, mainly to choose the layers of hot-melt adhesive means having different activation temperature, and the activation temperature of the first adhesive layer is higher than the activation temperature of the second adhesive layer. Thereby improving the result of the migration.
As the second carrier film preferably use a transparent plastic film having a thickness of more than 6 μm, preferably having a thickness of between 6 μm and 250 μm. However, you can also use a paper substrate or material Teslin®(Matt, white, uncoated single-layer plastic film) as the second carrier film. As the first carrier film is preferably used plastic film having a thickness of between 4 μm and 75 μm.
In accordance with one preferred exemplary embodiment of the invention, include two or more first sections, and each of the first sections of chemicals is Chen the second area, molded as a solid area. This facilitates removal of the second region of the base film.
The first region preferably covers at least 50% of each of the first section, with additional preference over 70% of each of the first section. In addition, the first region may completely cover each of the first section. In addition, the second section covers the first area is less than 5%. This measure also provides that the second part of the base film can be removed with high reliability.
In accordance with one preferred exemplary embodiment of the invention, the decorative layer has a single or multiple layers that create optically variable effect. Thus, the decorative layer preferably has a replication lacquer layer having a surface structure, imprinted in the replication lacquer layer, for example, the diffraction surface structure, microlensing structure, matted structure or symmetric or asymmetric reflective embossed phase diffraction grating. In this case mikrolinzy structure may include, for example, a spherical lens or a cylindrical lens. Examples of such security features microlithotype structures are the so-called moiré magnifiers. In addition, the decorative layer predpochtite the flax has a reflective layer, which is particularly preferably attach to the patterned shape of the first information object. In addition, the decorative layer preferably has a volume holographic layer, in which the recorded volume hologram. In addition, the decorative layer preferably has an element in the form of a thin film layer to create the effect that changes color depending on the angle of view. Such thin-film layered element includes, for example, an absorption layer, a separating layer and a reflective layer, in which the separating layer has a thickness in the range of λ/2 or λ/4 length λ of the light waves in the frequency range of visible light. In addition, such thin-film layered element may also include a sequence of multiple layers having different refractive indices, which in each case satisfy the condition λ/2 or λ/4. The decorative layer preferably has a colored layer with scalloped form, formed as the second information object. The specified color layer preferably is an opaque colored layer or a colored layer containing optically variable pigments, for example, thin-film layers of pigments or liquid crystal pigments. In addition, the decorative layer may also have a liquid crystal layer, preferably a layer of cholester the ical liquid crystals or a layer of nematic liquid crystals or combination of layers of cholesteric and/or nematic liquid crystals. In addition, the decorative layer may also have two or more colored layers, or any desired combination of the above layers.
The invention is explained below using examples based on numerous exemplary of embodiments with accompanying drawings.
Figa shows a schematic illustration of the base film in the cut.
Fig.1b shows a schematic top view of the base film according figa.
Figs shows a schematic top view of an additional variant of the base film.
Figure 2-6 shows a schematic illustration of the cross-section for explaining process steps of the method according to the invention.
7 and Fig show schematic illustrations of the cross-section to illustrate the application of the transferable film according to the invention.
Figure 1 shows the base film 10 having a carrier film 11, the separating layer 12 and the decorative layer 13, which includes a protective lacquer layer 14, the replication lacquer layer 15, a reflective layer 16 and adhesive layer 17.
The carrier film 11 is preferably a film of polyethylene terephthalate (PET), polyethylenterephtalate (PEN) or biaxially oriented polypropylene film (VOR), having the first thickness of 6 μm to 125 μm. Then, on the carrier film 11 by applying additional layers sequentially layer separation layer and the decorative layer. For this purpose, first, on the carrier film 11 is applied separation layer 12. The separating layer 12 preferably consists of a waxy material which softens in the heat arising during the hot stamping process, and allows the decorative layer be easily separated from the carrier film 11. The thickness of the separation layer preferably ranges between 0.01 μm and 1.2 μm. Then put a protective lacquer layer 14 with a thickness between 0.5 μm and 1.5 μm. In this case, the protective lacquer layer 14 may also perform the function of the separation layer 12, and, accordingly, they both allow the decorative layer to separate from the carrier film 11 and protect the decorative layer 13 against mechanical damage and environmental influences. In this case, the protective lacquer layer 13 also can be painted or can contain micro - and nanoparticles.
The replication lacquer layer 15 consists of a thermoplastic lacquer, in which the imprinted surface structure by means of heat and pressure under the action of the tool for stamping. In addition, the replication lacquer layer 15 may also be formed from stitched UV varnish and surface structure m which can be pressed into the replication lacquer layer 15 by using UV-reproduction (replication).
The replication lacquer layer 15 preferably has a layer thickness between 0.5 μm and 15 μm. Surface structure, imprinted in the replication lacquer layer preferably is a diffractive surface structure, for example, a hologram, Kinegram (Kinegram®) or some other structure of the optically active diffraction grating. Such surface structures are usually the distance between the structural elements in the range from 0.1 μm to 4 μm. In addition, the surface structure can also represent a macroscopic surface structure, for example, microlensing matrix or reflective embossed phase diffraction grating.
The reflective layer 16 is applied to the replication lacquer layer 15 after it has been printed surface topography. A reflective layer 16 preferably is a metal layer consisting of chromium, copper, silver, or gold, or an alloy of such metals which are precipitated from the vapor in the vacuum layer thickness of from 0.01 μm to 0.04 μm. The reflective layer 16 can also be formed as a transparent reflective layer, for example, thin or finely structured metal layer or HRI or LRI-layer (HRI = high refraction coefficient; LRI = low refractive index). Such a dielectric reflecting layer, for example, consists of OSA is established from the vapor layer, consisting of metal oxide, metal sulfide, titanium dioxide, etc. having a thickness of from 10 nm to 50 nm.
In addition, it is also possible instead of layers 14-16 or in addition to them in the decorative layer to be even additional layers that create an optically variable effect, for example, thin-film layered system, the layer composed of crosslinked cholesteric liquid crystal material, or the color layer. In addition, the decorative layer may also include one or multiple electrically conductive or semiconductor layers that create an electrical circuit or electrical component, for example, radio frequency (RF) resonant circuit or tag (RFID tag). It may include a metal layer, for example, which is applied either by deposition from the vapor, or by printing, and then reinforce electrolytic capacity. In particular, the reflective layer 16 can serve as a conductive layer, which, for this purpose, may be similarly reinforced by an electrolytic method. In addition, the decorative layer 13 may include one or multiple layers composed of a magnetic material or an electroluminescent material.
Then put the adhesive layer 17 with a thickness of approximately 0.3 μm to 0.5 μm. The adhesive layer 17 predpochtitel is but consists of a thermally activated adhesive, and it is applied to the layer 16 over the entire surface area, for example, using a squeegee.
As shown in figa and fig.1b, the base film 10, and thus also the decorative layer 13 has two the first section 21 and second section 22 covering the first areas 21. In this case, the first areas represent the portion of the decorative layer, which should be transferred as a security feature on the target substrate, for example, the protected document.
The relief structure, print in the replication lacquer layer 15, preferably chosen so that it creates a predefined optically variable information object in the first sections 21. Thus, the surface structure, imprinted in the first sections 21, preferably different from the surface structure, imprinted in the replication lacquer layer 15 in section 21. In addition, the reflective layer 16 give a decorative shape and partially form a second pre-specified information object in the first area 21. Preferably, curly configuration of the reflective layer 16 in the first sections 21 and thereby also different from the configuration of the second section 22. Preferably, the reflective layer 16 was not provided in the second area 22. Optional optically active layers of the decorative layer 13 is also preferably have such a shape, to maintain registration with sections 21, and provide additional information objects in sections 21 so that the shape of this layer in the first areas 21 in this way differed from the forms in the second section 22.
In addition, can be provided by many first areas which are covered by a solid second section comprising first sections. This is shown as an example on figs, which illustrates the base film 10' with the first sections 21' and the second section 22'.
In the first stage, illustrated in figure 2, the adhesive layer 30 is applied on the surface of the carrier film 11, which is located opposite to the decorative layer 13 side. In this case, the adhesive layer 30 is applied on the entire surface area of the carrier film 11. In addition, the adhesive layer 30 may be deposited on the carrier film 11 only partially, for example, in the form of dots, as described above.
Adhesive layer 30 is an activated UV adhesive. The adhesive, which can be used for the adhesive layer 30 has, for example, the following composition:
Dicyclopentadienyltitanium 50-60%
2-hydroxyethylmethacrylate 8%
Triacrylate of trimethylolpropane 40-30%
(3-(2,3-epoxypropoxy)propyl)trimethoxysilane 1%
Irgacure 184 (firm CIBA) 1-2%
Adhesive layer 30 is applied on the carrier film 11 to a thickness of from 0.1 μm to 10 μm by using a printing method, by pouring or by means of a squeegee.
In the second stage, shown in figure 3, the adhesive layer 13 is applied to a carrier film 40. The carrier film 40 is a transparent plastic film, which preferably consists of PET, PVC (polyvinyl chloride), PEN, or represents war film, and has a layer thickness of 6 μm to 250 μm.
At the third stage, shown in figure 4, the first adhesive layer 30 activate exposing impact. For this purpose, the film structure consisting of a carrier film 40, the adhesive layer 30, the substrate film 11, the separation layer 12 and the decorative layer 13, as shown in figure 4, is exposed to UV light 5 in the area 31. For this purpose a source of collimated light, which is on the same side of the carrier film 40, which is opposite the side facing the carrier film 11, and is located at a distance from the carrier film 40. In this case, the path lucamino the light source and the adhesive layer 30 place the photomask, moreover, the specified photomask covering 32 and thereby enables selective display region 31. The light source of the exposure and the photomask is preferably represent part of the drum exposure device, in which miss film composite, shown in figure 4. As shown in figure 4, the photomask in this case, give this form and placed in such a way that the region 31 is mainly covered the first sections 21 and was positioned within tolerances register, preferably from 0.1 mm to 2.0 mm, relative to the first sections 21.
In region 32, the adhesive layer 30 is not exposed to UV light and therefore is not activated.
In the fourth stage, illustrated in figure 5, the decorative layer 13, the separating layer 12 and the carrier film 11 is cut along the boundary lines that define the first sections 21 and separating the first sections 21 of section 22. These layers are preferably cut with a stamp, which creates the corresponding grooves 61 in film composite consisting of layers 30 and from the 17th century to the 11th. As indicated by figure 5, in this case, you can also choose the depth of Postanovlenie so that part was also cut the carrier film 40. In addition, it is also possible that the carrier film 11 was not cut completely, but rather only the part. This can be done, first, in such a form that the area in which the carrier film 11 is cut completely or not cut, interspersed along the boundary line, or that the carrier film 11 is slotted throughout its thickness, but rather, for example, only 80% of its thickness.
At the fifth stage, the portion of the base film 10, which comprises an area of 22, are removed from the carrier film 40, and, due to the fact that the adhesive layer 30 is activated in area 31, the base film remains adhered to the carrier film 40 in the first sections 21 and remains on the carrier film 40. After creating a type of "grid" this leads to a multi-layer composite 1 shown in Fig.6, which is a multilayer composite can be used as a protection element or as a transfer film for applying a security feature on the target substrate. As illustrated in Fig.6, in this case the remains of non-activated adhesive material layer 30 remains on the carrier film 40 in the area 32. If appropriate, subjected to subsequent exposure to film.
As illustrated, involving 7 and Fig, multilayer composite 1 can be used as conversion film for applying element 23 security target substrate 70. For this purpose, a multilayer composite 1 is placed on the target substrate 70, and an adhesive layer 17 activate in the first region using the appropriate is appropriately shaped punch 71 for hot stamping. Then a multilayer composite comprising a carrier film 40, the adhesive layer 30 and the carrier film 11, remove the coated region of the decorative layer 13 so that the member 23 protection remains on the target substrate 70, as shown in Fig.
1. The method of obtaining the protection element (1, 2), and the method includes a stage on which provide the base film (10)having a first carrier foil (11) and single or multi - layer decorative layer (13), characterized in that the first adhesive layer (30) is applied on the first surface of the carrier foil (11), which is facing away from the decorative layer (13), and the second carrier film (40) is applied so that the first adhesive layer (30) is placed between the first carrier foil (11) and the second the carrier film (40), and the first adhesive layer (30) activate in the first region (31), which at least partially covers the at least one first section (21) of the base film (10), and the first adhesive layer (30) is not activated, do not provide, provide only partial or inactivate the second region (32)adjacent to the specified area (31), and the first carrier foil (11), at least partially, cut along the boundary line defining at least one the first section (21) and separating at least one first section (21) of the second leg (22) of the base film (10), and the second part of the basic the first film (10) comprises a second section (22), which is removed from the second carrier film (40), and in at least one section (21) of the base film (10) is attached to the second carrier film (40) via the activated first adhesive layer, and the first part of the base film (10)with the specified first part includes at least one first section (21), remains on the second carrier film (40).
2. The method according to claim 1, characterized in that the base film (10) has a separation layer (12)disposed between the first carrier foil (11) and a decorative layer (13), and the specified separation layer provides the possibility of separating the decorative layer (13) from the first carrier film (11).
3. The method according to claim 1, characterized in that the first adhesive layer (30) is applied to the first carrier foil (11) over the entire area of at least one first section (21) and second section (22) and activate before deleting the second part of the base film (10) in the first region (31).
4. The method according to claim 1, wherein the first adhesive layer (30) using an adhesive layer which can be activated by electromagnetic radiation, in particular by irradiation of UV-light.
5. The method according to claim 4, characterized in that the first adhesive layer (30) activate the radiation in the first region (31) after application of the second carrier film (40).
6. The method according to one of claims 4 or 5, characterized in that h is on the first adhesive layer (30) inactivate the second region (32) before applying the second carrier film (40).
7. The method according to claim 1, characterized in that the deactivation of the first adhesive layer is produced by irradiation of the first adhesive layer (30) in the second region (32).
8. The method according to any of claims 4 to 5, characterized in that the first adhesive layer (30) is irradiated by the radiation source placed in the direction of the surface of the second carrier film (40), which is opposite the side facing the decorative layer, and the specified source of radiation is placed at a distance from the second carrier film (40).
9. The method according to any of claims 4 to 5, characterized in that the first adhesive layer (30) is irradiated by the radiation source placed towards the side of the decorative layer that is opposite the side facing the first carrier film, and the specified source of radiation is placed at a distance from the decorative layer.
10. The method according to any of claims 4 to 5,
characterized in that the radiation source using a laser, and the laser is controlled so that the first adhesive layer (30) is exposed to the first region (31), but not in the second region (32), and/or irradiated in the second region (32), but not in the first region (31).
11. The method according to any of claims 4 to 5, characterized in that the beam path place the photomask between the radiation source and the first adhesive layer (30), and a specified photomask give this form and place so that the first adhesive layer (30) is exposed in the first region (30), but not in the second region (32), or the first adhesive layer is irradiated in the second region (32), but not in the first region (31).
12. The method according to any of claims 4 to 5, characterized in that the first adhesive layer (30) is irradiated through the decorative layer, and one or multiple layers of the decorative layer is arranged as a mask layer for regulating the exposure of the first adhesive layer (30).
13. The method according to item 12, characterized in that as a masking layer for regulating the exposure of the first adhesive layer (30) use a non-transparent layer in the decorative layer, and the specified opaque layer is placed in the first or second region, and do not create second or first region, respectively.
14. The method according to item 12, wherein in the first stage of irradiation, before applying the second carrier film, the first adhesive layer is irradiated by a radiation source placed towards the side of the decorative layer that is opposite the side facing the first carrier film, and the specified source of radiation is placed at a distance from the decorative layer, through the decorative layer acting as a mask layer, and inactivate the second region, and in the second stage of exposure, after application of the second carrier film, the first adhesive layer is irradiated by a radiation source placed in the direction of the sides of the second carrier film, which is opposite the side facing the first carrier film, and the specified source of radiation is placed at a distance from the second carrier film, and activate in the first area.
15. The method according to any one of claims 1 to 3, characterized in that the first adhesive layer using hot-melt adhesive agent, and the first adhesive layer is activated with a heated stamp for stamping in the first region but not in the second region, before removing the second portion of the base film.
16. The method according to any one of claims 1 to 3, characterized in that the first adhesive layer using hot-melt adhesive agent with latent reactivity, and the first adhesive layer is activated with a heated stamp for stamping in the first region but not in the second region, before removing the second portion of the base film.
17. The method according to any one of claims 1 to 5, characterized in that the first adhesive layer inactivate the second region using the imprinter decontamination layer.
18. The method according to any one of claims 1 to 5, characterized in that the first adhesive layer is applied by printing on the first and/or second carrier film in the first region but not in the second region.
19. The method according to any one of claims 1 to 5, characterized in that the first adhesive layer is applied is printed on the first and/or second carrier film in the first region and in teaching is de second region, moreover, the area is preferably less than 50% of the area of the second area.
20. The method according to any one of claims 1 to 5, characterized in that the decorative layer (13) and the first carrier foil (11) is completely cut along the boundary line that defines at least one first section.
21. Method according to any one of any one of claims 1 to 5, characterized in that the second carrier film (40) is cut to the extent of less than 50%.
22. Method according to any one of any one of claims 1 to 5, characterized in that the first carrier film is cut by stamping.
23. Method according to any one of any one of claims 1 to 5, characterized in that the film composite is formed of a base film, a second carrier film and the first adhesive layer, a process using a stamp for hot stamping, which simultaneously activates the first adhesive layer in the first region and at least partially proshtampovyvajte through the first carrier film along the boundary line that defines at least one first section.
24. Method according to any one of any one of claims 1 to 5, characterized in that the decorative layer contains a label, and labels are used to determine the first and second sections of the first adhesive layer, and/or to determine the first and second sections of the base film.
25. The method according to paragraph 24, wherein the cutting of the first carrier film, the activation of the first hell is tiunova layer, deactivation of the first adhesive layer and/or applying the first adhesive layer is controlled by detection of the label.
26. The method according to paragraph 24, characterized in that the labels contain printed material, surface topography, magnetic material and/or electrically conductive material.
27. The method according to paragraph 24, wherein the label is placed in the second area of the base film.
28. The method according to paragraph 24, wherein the label is detected using an optical sensor, magnetic sensor, a mechanical sensor and/or sensor, which registers the conductivity.
29. The method according to any one of claims 1 to 5, characterized in that after removing the second portion of the base film (10) the rest of the film (1) with the second carrier film (40) and the first part of a base film (10) is used as a bill of films, in particular films for hot stamping, to protect valuable documents.
30. The method according to any one of claims 1 to 5, characterized in that after removing the second portion of the base film (10) is then irradiated with the rest of the film (1) with the second carrier film (40) and the first part of a base film (10).
31. The method according to any one of claims 1 to 5, characterized in that the first adhesive layer using adhesive means with latent reactivity, and after removing the second portion of the base film (10) the rest of the film (1) is on the second carrier film (40) and the first part of a base film (10) was incubated for a specified time at room temperature and/or elevated temperature for curing the adhesive means with latent reactivity.
32. The method according to any one of claims 1 to 5, characterized in that after removing the second portion of the base film (10) the rest of the film with the second carrier film (40) and the first part of a base film (10) is placed on the target substrate (70), one or multiple first sections (21) of the base film is applied to the target substrate (70) activation of the adhesive layer (17)located between the decorative layer (13) and the target substrate (70), and multilayer composite, comprising a first carrier foil (11), the first adhesive layer (30) and the second carrier film (40), remove with a decorative layer (13) applied to one or multiple first base stations of the film.
33. The method according to claim 1, characterized in that the second adhesive layer (17) is applied on the other side of the decorative layer (13), which is opposite the side facing the first carrier foil (11).
34. The method according to p, characterized in that the second adhesive layer is a layer of hot-melt adhesive means.
35. The method according to p, characterized in that the second adhesive layer is a layer of adhesive means of cold hardening.
36. The method according to p, characterized in that the second adhesive layer is a layer of hot-melt adhesive means with latent reactivity.
37. The method according to one of p and 34, characterized in that for the first adhesive layer (30) vtorogo adhesive layer (17) apply various adhesive means.
38. The method according to one of p and 34, characterized in that the first and second adhesive layers use layers of hot-melt adhesive means having different activation temperature, and the activation temperature of the first adhesive layer is higher than the activation temperature of the second adhesive layer.
39. The transfer film (1), in particular a foil for hot stamping, to transfer one or multiple multi-element (23) on the target substrate (70), and the transfer film (1) has a base film (10)having a first carrier foil (11) and single or multi - layer decorative layer (13), characterized in that the transfer film (1) additionally has a second carrier film (40) and the first adhesive layer (30)is deposited on the first surface of the carrier film (1), which is converted from a decorative layer, and the first adhesive layer (30) is located between the first carrier foil (11) and the second carrier film (40), and the first adhesive layer (30) activate in the first region (31), which at least partially covers the at least one first section (21) of the base film, so that the base film (10) is attached to the second carrier film (40) in at least one first section (21), and the first adhesive layer (30) is not activated, do not provide, provide only partial or des is kiviruut in the second section (22), adjacent to the at least one first section (21), and the first carrier foil (11) is cut along the boundary line that defines at least one first section (21) and separating at least one first section (21) of the second leg (22) of the base film, and a part of the base film, which includes a second section (22), is removed from the second carrier film (40).
40. Transfer film according to § 39, characterized in that the base film (10) has a separation layer (12)disposed between the first carrier foil (11) and a decorative layer (13), and the specified separation layer provides the possibility of separating the decorative layer (13) from the first carrier film (11).
41. Transfer film according to § 39, wherein the transfer film has a second adhesive layer that is applied on the surface of the decorative layer that is opposite the side facing the second carrier film, and the adhesive strength of produced activated first adhesive layer (30) between the first carrier foil and a second carrier film, is less than the adhesive strength of a generated by the activated second adhesive layer between the decorative layer (13) and the target substrate.
42. The transfer film (1) according to § 39, characterized in that the second carrier film (40) is a plastic film having a thickness more than the 6 ám.
43. The transfer film (1) according to § 39, characterized in that the first carrier film (10) is a plastic film having a thickness of more than 4 μm.
44. The transfer film (1) according to § 39, wherein the two or more first sections (21) are enclosed within the second section (22), formed into a solid sphere.
45. The transfer film (1) according to § 39, characterized in that the first region (31) covers at least 50% of each of the first section (21), preferably more than 70% of each of the first section (21).
46. The transfer film (1) according to § 39, characterized in that the first region (31) completely covers each of the first section (21).
47. The transfer film (1) according to § 39, characterized in that the second section (22) covers the first region (31) less than 5%.
48. The transfer film (1) according to any one of p-47, characterized in that the decorative layer (13) has one or multiple layers (15, 16), which create optically variable effect.
49. The transfer film (1) according to any one of p-47, characterized in that the decorative layer (13) has a replication lacquer layer having a surface structure, imprinted in the replication lacquer layer, in particular selected from the group diffractive surface structure, the lens patterns, frosted patterns, and a reflective embossed phase diffraction grating.
50. The transfer film is about any of p-47, characterized in that the decorative layer (13) has a reflective layer (16), in particular a reflective layer, which gives the patterned form, in the form of the first data object.
51. Transfer film according to any one of p-47, characterized in that the decorative layer has a thin-film layered element to create the effect that changes color depending on the angle of view.
52. Transfer film according to any one of p-47, characterized in that the decorative layer is a colored layer, which gives the patterned form, as the second information object.