EA019121B1 - Security mark and method for the production thereof - Google Patents

Abstract

The present invention relates to holography and printing arts. A unit matrix is used with the initial holographic micropattern, at least one projection of said micropattern having cuts and/or faceted pyramid-shaped indentations, e.g., from a diamond indenter. The projections of the initial holographic micropattern are subjected to deformation in the unity matrix, which results in the cuts and/or faceted indentations in the micropattern. After stamping copies of the initial holographic micropattern on the metalized layer of the polymer film with a master matrix, additional latent images are applied to its demetallized areas. Fluorescent pigment is added to the protection masks. The security mark 7 (Fig. 3) consists of a polymer film 8 with a metalized layer 9, and an adhesive layer 10 covered with wax paper 12. A surface with the holographic micropattern 11 having alternate elements is formed on the metalized layer of the polymer film, said alternate elements being the exact copy of the initial holographic micropattern of the unit matrix. A latent image 13 is applied to the polymer film. The polymer film comprises demetalized areas 14 to which a latent image 15 is applied. The areas with the metalized layer are covered with a protection mask 16 which comprises a fluorescent pigment forming a running pattern in the mark. A separate area of the holographic micropattern is made with an altered diffraction efficiency, different from the diffraction efficiency of the rest of the surface of said micropattern. In addition to the applied latent image another latent image is formed in the security mark.

Description

The invention relates to printing and holography. It can be used in the manufacture of various documents, securities or other materials, for example, such as banknotes, checks, credit cards, bullion of precious metals, in order to protect against counterfeiting.

Known protective label [1] containing a polymer film with a metallized layer, which is the basis for an element with a varying optical shape, and a layer of adhesive sensitive to heat or pressure, for connection with a protected document, while on the metallized layer of the polymer film a microrelief surface of the hologram is formed with alternating protrusions and depressions.

A method of manufacturing [1] such protective labels includes forming on a single matrix an initial holographic microrelief with replicating its mirror image onto at least one master matrix, with which the original holographic microrelief is embossed on a metallized layer of a rolled polymer film with a coating on it a layer of adhesive, on top of which wax paper is attached, after which mass production of ready-made protective marks is carried out, separating them from the roll prepared in this way constant polymeric film.

A disadvantage of the known security mark and the method of its mass production is that they do not exclude the possibility of reproducing a holographic image by directly copying the hologram relief. It is enough for the attackers to copy the hologram microrelief and reproduce it using the available methods of manufacturing the matrix and duplicating holographic products.

A security label [2] is also known, which includes, like its counterpart [1], the same structural elements and steps of the mass production method, but to increase the protective properties of such a label, it additionally contains a latent image that is applied to the opposite of the holographic relief side of the polymer roll film.

In this case, an optical effect is achieved when the latent image remains invisible if observed in unpolarized light, and becomes visible under polarized visualization.

However, the disadvantage of the known device and method according to the analogue [2] remains, although to a lesser extent than that of the analogue [1], the possibility of their reproduction by modern means and technologies.

More protected from the reproduction of their essence are protective holographic labels, which according to the method of their manufacture have original features of metallized and demetallized sections of their polymer film.

For the prototype of the invention, the device adopted a protective label [3], which includes such features. It contains the same structural elements with the possibility of applying a latent image as the analogue [2], but at the same time at least one demetallized area is made on its polymer film, the boundaries of which coincide with the boundaries of the holographic relief.

Due to this, counterfeiting and imitation of a protective holographic mark is significantly complicated, since it is very difficult to achieve the exact fulfillment of such a match.

For the mass production of this protective label, a prototype method is known [3], which includes the formation on a single matrix of the initial holographic microrelief with the replication of its mirror image onto the master matrix, with which the original holographic microrelief is embossed on a metallized layer of a rolled polymer film, with the possibility of applying a latent image on the side opposite from the holographic relief. In this case, protective masks are applied to preselected sections of the metallized layer of the rolled polymer film and chemical etching of the remaining sections of the metallized layer is carried out to obtain demetallized sections of the rolled polymer film, the boundaries of which coincide with the boundaries of the holographic relief, after which the protective masks are removed and applied to the rolled polymer a film of a layer of adhesive, on top of which wax paper is attached, after which they carry out Own production of ready-made protective labels, separating them from the roll polymer film prepared in this way.

However, the condition for observing the accuracy of coincidence of the boundaries of the demetallized sections of the rolled polymer film with the boundaries of the holographic relief of the metallized sections of the polymer film is achieved using a relatively complex technology. In addition, the need to remove the protective masks from the roll of polymer film further complicates the manufacturing process of the protective label. However, there still remains the likelihood of a repeat of this process for attackers.

Therefore, the object of the invention is the creation of a more technological security label with an increased degree of its protection against direct copying and the creation of a simpler method for its mass production with an increased degree of protection against direct reproduction.

The problem for the invention is solved by the fact that the protective label containing a polymer film with a metallized layer, which is the basis for the element with a changing optical shape, and an adhesive layer that is sensitive to heat or pressure, for connection with a protected document, and on a metallized polymer layer the film formed a surface with a holographic microrelief formed by alternating protrusions and depressions, in addition,

- 1 019121 a latent image is deposited on a polymer film on its opposite side from the holographic microrelief and at least one demetallized portion is made on its side with a holographic microrelief; it has the following independent distinguishing features: at least one protrusion of the holographic microrelief surface has at least , one cut, and on the demetallized portion of the polymer film an additional latent image is applied, with at least one portion of the metallized A protective layer containing a fluorescent pigment is applied to this layer of polymer film.

The introduction of a distinctive feature on at least one protrusion of the hologram microrelief surface is made, at least one cut will allow you to create an additional protective element that is invisible to the eye, but with the holographic image. In this case, a microscopic separate optical element is formed, and if there are many slices on the topographic microrelief of the hologram, a multitude of microscopic individual optical elements are formed. And the light incident on them will be reflected and form glare from these elements in different directions. This will ultimately change the diffraction ability of the grating, which initially constitutes the hologram. In this case, the manufacturer of the security label, at his discretion or at the request of the consumer, will produce the necessary number of such microscopic individual optical elements that will be applied to specific places and will have their own character of applying such deformations. This will make it impossible for intruders to repeat the security label. In addition, such a structural element in the form of a slice is easier to create, but it is more difficult to repeat it, for example, using a laser beam to cut off the tip of the protrusion of the hologram microrelief surface than to precisely align the boundaries of the demetallized sections of the rolled polymer film with the boundaries of the holographic relief of its metallized sections, as in the prototype [3].

The application of an additional latent image on the demetallized portion of the polymer film will contribute to the appearance of an auxiliary element that is difficult to reproduce, which will protect both sides of it with a latent image.

The application of at least one area of the metallized layer of a protective mask containing a fluorescent pigment is aimed at creating a latent fluorescent image that appears when this area is illuminated, for example, with ultraviolet light.

This, ultimately, will increase the number of hidden elements in the security label, which will improve the quality of protection of objects on which such a label will be applied.

Embodiments of the invention device are described by its dependent distinguishing features:

sections are made in the form of pyramidal faces of at least one recess in at least one protrusion of the surface of the holographic microrelief;

a protective mask containing a fluorescent pigment is made by flexoprinting with the formation of a carpet pattern on the protective mark;

at least a separate surface portion of the holographic microrelief is made with a changed diffraction efficiency different from the rest of the surface of the holographic microrelief, a separate latent image is formed on the opposite side of the holographic microrelief with a separate latent image on the opposite side of the holographic microrelief of the polymer film, an additional latent image is formed protective mark is made as h Part of the listed products - document, label, security, control mark, ticket, packaging.

The problem for the invention is solved by the fact that the method of manufacturing protective labels, including the formation on a single matrix of the original holographic microrelief with the replication of its mirror image, at least one master matrix, with which copies of the original holographic microrelief are embossed on a metallized a layer of a rolled polymer film, with the possibility of applying a latent image to the side opposite from the copies of the holographic relief, while applying protective asks on pre-selected sections of the metallized layer of the rolled polymer film and carry out chemical etching of the remaining sections of the metallized layer to obtain demetallized sections of the rolled polymer film, after which an adhesive layer is applied onto the rolled polymer film on which wax paper is attached, and then mass production of finished protective labels, separating them from the thus prepared roll polymer film, has independent differences distinct signs: in the manufacture of a single matrix, at least one protrusion of its initial holographic microrelief is deformed to form at least one slice and / or faceted recess in it, and after embossing with a matrix, copies of the original holographic microrelief are applied to the metallized layer of the rolled polymer film additional latent images on its demetallized areas, while they do not remove the applied onto the areas of the metallized layer of the rolled polymer film

- 2 019121 protective masks into which fluorescent pigment is previously introduced.

The implementation in the manufacture of the deformation matrix of at least one protrusion of its initial holographic microrelief with the formation of at least one slice and / or faceted recess in it is aimed at the subsequent simplification of the design and the technology of obtaining a protective mark in comparison with the prototype [3], since in this case, there is no need to use sophisticated equipment and carry out a long technological process with the aim of obtaining difficult to reproduce the exact alignment of the boundaries of the demetallized area with the boundaries of the holographic relief on a rolled polymer film.

In addition, in this case, the lines of the initial external contour of the holographic microrelief are underestimated, which is difficult to determine with the help of widespread optical means of increasing visibility, and it is also practically impossible to accurately repeat on an unauthorized copy. This will significantly increase the degree of security of such a label from its direct copying.

The application of an additional latent image on at least one demetallized portion of the polymer film after embossing with the master matrix of the original holographic microrelief on its metallized layer will increase the number of latent images in the security mark from both sides, which is aimed at increasing the efficiency of the use of the security mark in order to prevent unauthorized copying it.

The preservation, in contrast to the prototype [3], of protective masks applied to areas of the metallized layer of the rolled polymer film will allow the effect of the penetration of the substance of these masks into the pores of the metallized layer of the rolled polymer film. Such a metallized layer, as a rule, is applied by sputtering with the formation of pores of the order of 1 μm, through which a mask is partially visible through lighting. Therefore, a preliminary introduction of a fluorescent pigment into the mask will allow the mask to glow through the microscopic pores of the metallized layer of the polymer film when illuminating the protective mark with UV light, which is an additional hidden element of the protective mark that makes it difficult to fake.

Embodiments of the invention-method are described by its dependent distinguishing features:

a section of the protrusion of the original holographic microrelief on a single matrix is produced by infrared radiation;

faceted recess during deformation of at least one protrusion of the initial holographic microrelief on a single matrix is produced by a diamond indenter;

at least a separate section of the hologram microrelief surface is performed with diffraction efficiency different from the rest of the hologram microrelief surface, so that when it is combined with a latent image made on the opposite side of the holographic relief of the polymer film, a latent image with a given code is formed;

wherein the predetermined code is formed in the form of letters and / or numbers and / or figures appearing in a preselected location;

masks with fluorescent pigment are also applied to demetallized areas of the rolled polymer film using flexographic printing with varnish;

applying masks with fluorescent pigment form a carpet pattern in a protective label.

The invention is illustrated by drawings.

In FIG. 1 shows a part of a multiply enlarged image of a single matrix with an initial holographic microrelief; in FIG. 2 is a plan view of a security mark; in FIG. 3 - repeatedly enlarged section of the label.

To obtain the product, a single matrix 1 is used at the very beginning (Fig. 1), for example, nickel, with the initial holographic microrelief 2 formed by protrusions 3 and depressions 4. Moreover, one protrusion 3, or some of them, or even all of them, have cuts 5 and / or faceted pyramidal depressions (not shown) made by pressing a diamond indenter 6 into the initial holographic microrelief 2 (shown conventionally by dashed lines).

The security tag 7 (Fig. 3) consists of a polymer film 8 with a metallized layer 9, which is the basis for any elements with a varying optical shape, and a layer of adhesive 10 sensitive to heat or pressure, for connection with the protected object (not shown). At the same time, a surface with a holographic microrelief 11 having alternating elements that are an exact copy of the original holographic microrelief 2 (Fig. 1) of a unit matrix 1 consisting of the same protrusions 3, depressions 4 and made on the protrusions is formed on the metallized layer 9 of the polymer film 8 3 slices 5 and / or faceted pyramidal depressions. The adhesive layer 10 (Fig. 3) is covered with wax paper 12.

On the polymer film 8, on the opposite side of the holographic microrelief 11, a latent image 13 is applied (conventionally shown by dashed lines) and at least one demetallized area 14 is applied on its side with a holographic relief 11, on which an additional latent image 15 is applied (conventionally shown by dashed lines) lines).

- 3 019121

In areas of the metallized layer 9, a protective mask 16 is applied, made, for example, by flexographic printing with varnish containing a fluorescent pigment (not shown). The protective mask 16 covers part or all of the surface with a holographic microrelief 11. Moreover, in the case of such a coating, a protective pattern is formed in the protective mark 7 (Fig. 2) in the form of visible alternating with the naked eye through the transparent surface of the polymer film 8 (Fig. 3) figures 17, 18 and 19 (Fig. 2) holograms, differing in tones of their color and formed, respectively, by areas with a metallized layer 9 (Fig. 3), on which a protective mask 16 is applied and not applied, and demetallized areas 14.

A protective mask can also be applied (not shown) in whole or in part to demetallized areas 14 (Fig. 3).

At least a separate section (not shown) of the surface of the holographic microrelief 11 is made with a modified diffraction efficiency different from the diffraction efficiency of the rest of the surface of this relief. At the same time, together with the applied latent image 13, another additional latent image 20 (conventionally shown by dashed lines) is formed in the security mark 7 (Fig. 2).

For mass production of protective labels 7 (Figs. 2 and 3), first they form on a single matrix 1 (Fig. 1), for example, nickel, the initial holographic microrelief 2. Then, at least one of its protrusions 3 is deformed to form in it, at least one cut 5 and / or faceted recess (not shown). In this case, slice 5 is formed using infrared radiation, for example, a laser beam (not shown), and a faceted recess with a diamond indenter 6 (indicated conventionally by dashed lines).

An embodiment of the security mark 7 (Fig. 2, 3) of increased security is also possible, when at least a separate portion (not shown) of the surface of the original holographic microrelief 2 (Fig. 1) is performed with diffraction efficiency different from diffraction efficiency the rest of such a surface.

Then they are embossed with a single matrix 1, depending on the circulation of the manufactured products, on one, several, or on the set of master matrices (not shown), mirror reflections (not shown) of the original holographic microrelief 2.

After that, using master matrices, copies of the original holographic microrelief 11 (Fig. 3) are embossed on the metallized layer 9 of the roll (not shown) of the polymer film 8 and a latent image 13 is applied to it. Moreover, in the case of the security mark 7 embodiment when at least a separate portion (not shown) of the surface of the initial holographic microrelief 2 (Fig. 1) is previously performed with diffraction efficiency different from the diffraction efficiency of the remaining such surface, form protective label 7 (Fig. 2, 3) copies of the original holographic microrelief 11 with the same secret properties. In this case, when combining such a modified separate section with the latent image 13, a latent image 20 (Fig. 2) with a given code is formed.

In the process of rolling the roll of polymer film 8 (Fig. 3), protective masks 16 are also applied onto its preselected portions of the metallized layer 9 by flexographic printing with varnish, into which a fluorescent pigment (not shown) is previously introduced. By applying protective masks 16 with a fluorescent pigment, a carpet pattern is formed in a roll of polymer film 8 (Fig. 2) in the form of holograms alternating between themselves 17, 18 and 19 (Fig. 2) visible to the naked eye through the transparent surface of the polymer film 8 (Fig. 3) ), differing in tones of their color and formed, respectively, by areas with a metallized layer 9, on which a protective mask 16 is applied and not applied, and demetallized areas 14 (Fig. 3).

Then, the remaining sections of the metallized layer 9 are chemically etched to obtain demetallized sections 14 on the rolled roll of polymer film 7. If necessary, an additional latent image 14 and / or a protective mask 16 is applied to the thus obtained demetallized sections 14 (Fig. 3).

After that, a layer of adhesive 10 is applied to this roll along its entire extended length, on which wax paper 12 is attached.

Then carry out the mass production of finished protective labels 7, separating them from the thus prepared deployable roll of polymer film 8.

To fix any of the thus obtained security tags 7 to the selected object, wax paper 12 is removed from it and the security tags 7 are attached using a layer of glue 10 to the object. In this case, the security label 7 becomes part of, for example, a document, label, security, control mark, ticket or packaging, increasing the security of such objects from unauthorized copying.

Information sources

1. International application AO 9324332, IPC Β42Ό 15/10, filed 1993.05.25, published 1993.12.09.

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2. Patent No. 1869 and IPC 602B 27/00, No. 42-15/00, priority 2004.07.28, published 2005.03.30.

3. Patent VI No. 2354558 C1, IPC Β42Ό 15/10, B32B 15/08, conventional priority 2007.07.26 IL a200708588, published 2009.05.10 (prototype).

Claims (13)

CLAIM 1. A protective label containing a polymer film with a metallized layer and a layer of adhesive that is sensitive to heat or pressure to connect with the document to be protected, while on the metallized layer of the polymer film there is a surface with a holographic microrelief formed by alternating protrusions and valleys, besides the surface is polymer films with a holographic microrelief contains at least one demetallized area, and a latent image is applied on the opposite surface, which differs The fact that at least one protrusion of the surface of the holographic microrelief is made with at least one cut, and an additional latent image is applied to the demetallised section of the polymer film, and a protective mask containing a fluorescent pigment is applied to at least one section of the metallized polymer film layer. 2. The label according to claim 1, characterized in that the sections are made in the form of pyramidal faces of at least one recess in at least one protrusion of the surface of the holographic microrelief. 3. The label according to claim 1, characterized in that the protective mask containing the fluorescent pigment is flex flex printing with the formation of alternating figures on the protective label. 4. The label according to claim 1, characterized in that at least one portion of the surface of the holographic microrelief is made with an altered diffraction efficiency that is different from the diffraction efficiency of the rest of the surface of the holographic microrelief. 5. The label according to claim 4, characterized in that a separate latent image on the side of the polymer film opposite the holographic microrelief of the polymer film is formed with a separate latent image on a side surface of the holographic microrelief with a modified diffraction efficiency. 6. The label according to claim 1, characterized in that it is intended for application to a document, label, security, control stamp, ticket, packaging. 7. A method of manufacturing protective labels, which includes forming an initial holographic microrelief on the original matrix, replicating its mirror reflection on at least one master matrix, with which a copy of the initial holographic microrelief is embossed on a metallized layer of a rolled polymer film, with the possibility of applying a latent images on the side opposite to the holographic relief copies, while putting on protective masks on the preselected areas of metallized a layer of the rolled polymer film and carry out chemical etching of the remaining sections of the metallized layer to produce demetallized sections of the rolled polymer film, after which they apply a layer of adhesive substance onto the rolled polymer film, onto which wax paper is attached, and then carry out mass production of finished protective labels, separating them from thus prepared roll polymer film, characterized in that in the manufacture of the original matrix produce deformation of at least one protrusion of its original holographic microrelief with the formation of at least one slice in it, in particular with the formation of a faceted depression, and after the master matrix embossing copies of the initial holographic microrelief, additional latent images are deposited on the demetallized sections of the roll polymer film, while retaining the applied on the areas of the metallized layer of the rolled polymer film protective masks into which the fluorescent pigment is previously introduced. 8. The method according to claim 7, characterized in that the cut of the protrusion of the original holographic microrelief on the original matrix is produced by infrared radiation. 9. The method according to p. 7, characterized in that the cut, faceted recess during deformation of at least one protrusion of the original holographic microrelief on the original matrix is produced with a diamond indenter. 10. The method according to claim 7, characterized in that at least one portion of the microrelief surface of the hologram is performed with diffraction efficiency different from the diffraction efficiency of the rest of the microrelief surface of the hologram, so that when it is combined with the latent image made on the opposite holographic relief side of the polymer film, formed a latent image with a given code. 11. The method according to claim 10, characterized in that the specified code is formed in the form of letters, and / or numbers, and / or figures that appear in a pre-selected place. 12. The method according to claim 7, characterized in that the mask with a fluorescent pigment is also applied to - 5,019,121 demetallized areas of a rolled polymer film using flexographic printing varnish. 13. The method according to p. 7, characterized in that the application of masks with a fluorescent pigment form in the security label a pattern in the form of alternating figures.