RU2642535C1 - Multilayer protective element and method of its obtaining - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: multilayer protective element contains an optically transparent film, on one side of which a layer with a regulated adhesion is applied, a thermoplastic polymer composition for forming micro - and nano-relief elements of the flat optics by the embossment, and an embossed rainbow hologram, a layer with a high refractive index. In the thermoplastic layer, the embossing method forms a relief of the diffraction structure organized by the type of a reflective phase diffraction grating. On top of the layer with a high refractive index, an information layer with obvious and hidden elements is applied, then a photopolymeric layer with a bulk record of the interference structure is applied, on top of which a layer of the paint composition and an adhesive layer are consistently applied.

EFFECT: increasing not less than twice the degree of identifiability, security, reliability of visual inspection of the authenticity and integrity, the essential difficulty of forgery, the high durability and efficiency of protective properties.

10 cl

Description

The invention relates to the field of development of technical means of visual and instrumental identification of authenticity and integrity control of various objects and products.

More specifically, it relates to special security signs made using holographic diffraction elements and complex methods of physico-chemical, printing and technological protection. At the same time, the main elements providing a high degree of identifiability, security, reliability of visual control of authenticity and integrity, a significant difficulty in counterfeiting at high durability of protective properties, are its multilayer structure, combining holographic images formed in both relief and volume-phase phases in various layers (amplitude) methods, as well as elements of physical-chemical, printing and technological protection applied by colorful compositions and laser radiation , Including allowing physical transfer of the information to the surface and in the volume of support.

Currently, one of the global economic problems in the world is the protection against counterfeiting of a variety of products, trademarks, other intellectual property, as well as special printing products. The presence and constant growth of threats in this area determines the relevance of the development and implementation of various new methods, methods, devices and technologies for identifying authenticity and protection against falsification and falsification.

One of the most widespread methods of protection against counterfeiting is protective technical solutions based on the use of holographic diffraction elements formed by phase-relief methods (rainbow holograms). In this capacity, the so-called photopolymer volumetric full-parallax holograms (the diffraction pattern of which is formed in special photopolymer or other recording layers with a volume recording of the interference structure) are less common. In the multilayer material construction of such signs, hidden labels, explicit information in the form of an instance number, barcode, etc. are applied to increase the security with special compounds.

The protective effect of such signs is based on the formation of individual holographic diffraction images, which cannot be imitated by other methods, are easily identified visually, however, they require a complex of special technological equipment, precision optical technologies and qualified personnel to manufacture.

A rainbow hologram is a relief micro- and nanostructure, consisting of pixels with micro-bars (usually a sinusoidal profile) of a given relief depth, period and angle of their orientation on the plane. Such a designed diffraction structure, organized by the type of a reflective phase diffraction grating, optically visualizes (restores) a given bright contrasting multi-color macro image. When changing the viewing angle or lighting, the color of individual parts of the image changes, they can disappear or appear, create effects of movement, volume, etc.

By the nature of the image, rainbow holograms are divided into three main classes - two-dimensional or flat (2D), three-dimensional or three-dimensional (3D) and mixed (2D / 3D)

2D holograms are images of two-dimensional objects with visible width and length. They are characterized by bright colors that change when the hologram is rotated relative to the light source. Compared to other types of holographic images, they are quite easily reproduced and therefore not applicable to protective technologies.

2D / 3D holograms restore single-color and color images of three-dimensional objects located near the registration plane, and have the effects of multi-colored volumetric plans.

3D holograms restore three-dimensional images of objects with a width, length and some insignificant depth.

At the same time, the widespread use of manufacturing technologies for rainbow holograms and the resulting opportunities for their unauthorized repetition or forgery, as well as difficulties in visually identifying the authenticity of a hologram experienced by an unprepared user, limited, as a rule, to stating that a hologram is present on the product reduce the effectiveness of the use of such protective elements.

Understanding this, manufacturers of such holographic security elements are introducing optional new technical solutions aimed at making counterfeiting difficult due to multi-level degrees of protection, technological complexity of development and / or circulation production, as well as physical principles of their implementation (or control).

At present, these are additional images with various diffraction effects visible to the naked eye, such as: multiple image angles depending on the angle of view, color coding, animation and kinematic effects (illusion of the movement of an object when the hologram is rotated), visualized at large diffraction angles images, moire and volume effects, micro- and nanotexts, and at the same time hidden tags containing elements that are visible only under certain conditions. Almost all of these effects are created by digital methods for the synthesis of holographic images.

Another way of generating diffraction images, which is fundamentally different from microrelief, is to record volume holograms in special photopolymer other recording layers with a volume recording of the interference structure. The exposed interference pattern in the volume of such a material due to the non-uniform photopolymerization at the points of the maxima and minima of the incident radiation creates regions that differ in the refractive index. The volumetric nature of the interference pattern changes the diffraction pattern of the incident light. Such a thick-layer hologram will acquire the properties of spectral and angular selectivity and has high diffraction efficiency while maintaining a full-parallax three-dimensional image.

Such holograms are distinguished by greater, in comparison with iridescent, possibilities for recording three-dimensional objects, and therefore security signs based on them have a higher visual identification efficiency (even for an unprepared user) and have recently been actively promoted by manufacturers on the security technology market.

So, it is known, for example (RU, patent 2517177, publ. 05.27.2014), a method of embedding a volume hologram in paper and a card to prevent counterfeiting. A volume hologram sheet for embedding, comprising: a volume hologram layer and a substrate placed on only one side surface of the volume hologram layer using a bonding agent. The peeling resistance of the volume hologram layer and the substrate is 25 gf / 25 mm or more. Counterfeit prevention paper includes the indicated volume hologram sheet. A map is a sheet of a volume hologram placed between two sheets. EFFECT: obtaining a thin sheet of a volume hologram for embedding, resistant to mechanical stress, such as tensile stress, shear stress and compression stress, during processing, even under heating conditions, as well as receiving paper to prevent fakes and cards using this sheet.

The development and replication of volume holograms is based on fine chemical synthesis, precision optical technologies and the strictest quality control system and production discipline at all stages. In a full format, a closed cycle of high-quality reproduction of such holograms is now available only to a small number of large manufacturers focused primarily on chemical technologies (Dupont, Bayer and Dainippon), which jointly limit the transfer of their materials and technologies to anyone. These restrictions are the main obstacle (obviously temporary) on the way of large-scale falsification of such elements, since in fact volume holograms, for all their advantages, do not have protective functions, can be easily copied and therefore require the introduction of additional security elements.

For example, there is a known (patent RU 2446424, published March 27, 2012) method for copying holograms and manufacturing Denisyuk holograms (volume holograms). The method includes the stages in which the unexposed photosensitive material is placed parallel to the copied hologram and illuminated with coherent radiation in the form of a narrow gap. The radiation forms a lighting zone that remains parallel to the projection of the direction of incidence of the coherent radiation on the plane of the copied hologram, and this zone is moved along the surfaces of the unexposed photosensitive material and the copied hologram in the direction perpendicular to the specified projection.

Due to the growing interest in the technologies of photopolymer holograms, the expansion of the scope of their application, more and more technical solutions appear in this area. In the part concerning the chemical component of the manufacturing process, for example, it is known (patent RU 2470953, publ. 12/27/2012). The present invention relates to polyurethane compositions for the production of holographic media containing (A) one or more polyisocyanates, (B) one or more isocyanate-reactive block copolymers, (C) one or more compounds having groups that react with actinic radiation to ethylene unsaturated compounds with polymerization, (D) optionally one or more free radical stabilizers, and (E) one or more photoinitiators. Holographic media obtained from such polyurethane compositions are also described. EFFECT: obtaining polyurethane systems that have excellent compatibility of the polyurethane matrix polymer with the radiation-curable monomers unsaturated in the olefin type and have significantly higher transparency.

In addition, due to the considerable thickness of the photopolymer (usually 20-40 microns), it is difficult to use thick-layer holograms in the form of thin layers, for example, hot stamping foils. Such grades use adhesive compositions of constant stickiness to connect with the surface of the protected object and therefore are less resistant to attempts to separate from the object of protection mechanically or chemically for reuse.

Thus, the possibilities for using each type of hologram in protective technologies are currently limited by the above disadvantages.

To increase the efficiency of using security signs based on holographic diffraction elements, their modern protection complex may include:

- an additional non-holographic hidden (latent) image, applied by lamination, visualized by polarized light;

- additional non-holographic image obtained by thermal transfer printing, ink alphanumeric numbering or laser engraving;

- partial laser demetallization of the mirror layer of the rainbow hologram with precision reduction to the diffraction image;

- hidden fluorescent labels visualized by UV radiation or by special laser light.

Such options of security signs allow not only to implement visual or instrumental control of their authenticity, but also use machine-readable identification and verification technologies.

The most common additional protective element of holographic signs are hidden fluorescent labels, luminescent under the influence of a certain radiation. Luminescence characteristics, such as intensity, wavelength of the maximum of the spectrum, spectral range of excitation and emission, attenuation kinetics, polarization characteristics of the glow, can be characteristic features of such labels for identifying the authenticity of an object.

Known (patent US 3,276,316, publ. 04.10.1966) a method for producing a polymer layer with a dichroic fluorescent dye dissolved in it, which anisotropically luminesces under UV radiation.

Also (application US 2003/106994, publ. 12.06.2003) a protective element is proposed to identify the object, including a fluorescent or phosphorescent material with an orientationally ordered molecular structure. When a label is irradiated with UV radiation, it re-emits polarized fluorescent or phosphorescent light, the polarization and frequency parameters of which are characteristic features for identifying the authenticity of an object.

Proposed (application US 2005/230965, publ. 20.10.2005) thermal transfer printing for the manufacture of identification cards. The process involves printing an image on a paint-perceiving surface of a card substrate. The print is created by a combination of yellow, magenta and blue inks. Top paint has luminescent properties. The resulting print is visible in ordinary light and has bright luminescence when illuminated with UV radiation.

Proposed (patent US 6899275, publ. 31.05.2005) an automatic system and method for identifying authenticity using a machine-readable multi-layer sign. The sign has many layers one after the other with machine-readable marks. Each of the layers is encoded with identification symbols that are detected using one or more technologies. Each of the layers may include the same or different coding materials, providing the ability to read using x-ray, radio, thermal, magnetic or ultrasonic radiation. Composite characters can be formed either within the same layer or in the form of composite fragments in different layers.

Proposed (patent UA 16893, publ. 15.08.2006) a method for verifying the authenticity of a holographic security element with a microrelief formed on the surface of a polymer film with fluorescent labels. The method includes the stage of excitation of a fluorescent dye using radiation with a specific wavelength, reading the fluorescence spectrum, analysis and comparison of the fluorescence spectrum of the investigated holographic element with a reference spectrum. If the essential features of the compared spectra coincide, a decision is made on the authenticity of the element.

Known (patent US 6.263.104, publ. 17.07.2001) fluorescent holographic security element and method of verification of its authenticity. In particular, a device and method for reading information from holograms and other diffraction objects, including fluorescence coding and decoding on transparent holograms and other objects, are proposed. In the latter case, fluorescent labels were placed on the opposite side of the object with respect to the hologram, and the spectral properties of the luminescent substance were the coding element.

To identify an additional characteristic feature of security signs, microrelief analysis technologies are widely used both on the surface of protected objects and on the information layers of the sign itself.

It was proposed (patent RU 2088971, published on 08.27.1997) to apply a stamp in the form of a piece of a transparent film with specially created micropores filled with a special coloring substance to the protected object. Micropores are etched track marks after processing the film with heavy ion beams and are randomly located in the film with a certain density. Images of the distribution of track pores are initially recorded with a microscope and entered into the database of protected objects. When verifying the authenticity of an object, a comparison is made between the stored images and the image taken from the object being checked. Comparison can be done either manually using a special computer program, or fully automated. It is assumed that the location of the pores on the label is violated when trying to re-stick the brand or trying to copy it.

It is also proposed (ibid.) To carry out a computer analysis of optical microimages directly on the surface of the protected products, for which a specialized hardware-software complex is used. The recognition process is automated. For authentication, a personal computer, a specialized digital microscope (USB video magnifier) and software are used.

It is known (patent RU 2413964, publ. 10.03.2011) and a technical solution for protective technology that combines the recording of information about the microrelief of the brand with its luminescent features. Such a combined brand authenticating the product includes a multilayer film structure with layers on which information is recorded, characterized in that on the surface of one or more layers there are spatially defined regions of the microrelief, the shape of which is random, while the microreliefs are formed in the layers of the brand due to differences in the wettability of fluorescent paints and polymer layers, and the shape of the microrelief after optical digital processing and cryptographic coding is recorded a preliminary time labeled fluorescent areas located on different layers of the multilayer structure in the form of an encoded sequence of characters, and serves as an individual characteristic for authentication of this brand.

Thus, the main approaches to increasing the effectiveness of protection against counterfeiting currently consist in either periodically changing the design of security signs, which directly affects the reduction of the time available to counterfeiters for the production of counterfeits, or in the complication of the technology for their production due to the introduction of know-how and elements integrated identification systems aimed at:

- visual control;

- instrumental control, including automated identification technologies;

- in-depth laboratory analysis of the authenticity of protective elements known only to the manufacturer;

- forensic control of the identity of the analyzed materials and components of the mark to the original samples.

The most significant in this regard are technical solutions aimed primarily at visual identification of the authenticity of the sign (and, accordingly, the protected object) by a simple, unprepared user, who, for example, only has a textual description of typical visual signs. The effectiveness of such protective elements is determined by the formula "easy to control - difficult to reproduce." The maximum values of the degree of control and complexity in production determine the maximum efficiency of the use of such signs.

The closest analogue of the developed technical solution can be recognized (patent RU 2491595, publ. 08.27.2013) a protective element in the form of a body of a multilayer film, in particular a layering film or a transfer film having an upper side facing the observer, and the protective element has a volume hologram layer in which a volume hologram is recorded, which provides the first optically variable information element, the security element having a duplication layer in the surface of which a relief structure is formed, providing comprising a second optically variable information element, which is located above the volume hologram layer, and that a partial metal layer is placed between the volume hologram layer and the duplication layer, the metal layer being provided in one or a plurality of first zones of the security element, and the metal layer not being provided one or a plurality of second zones of the security element, and the volume hologram is recorded in the volume hologram layer through a partial metal layer functioning as a photomask.

There is also known (ibid.) A method of providing a protective element in the form of a body of a multilayer film, in particular a layering film or a transfer film having an upper side facing the observer, and providing a multilayer body containing a partial metal layer and a duplication layer, while the relief structure providing a second optically variable information element is formed on the surface of the duplication layer, and a metal layer is provided in one or a plurality of first zones of the security element, and a metal the layer is not provided in one or a plurality of second zones of the security element with the fact that the volume hologram layer is applied to that body surface of the multilayer film which is closer to the metal layer than to the duplication layer, so that a partial metal layer is located between the volume hologram layer and the layer duplication, and the fact that the volume hologram layer is exposed to coherent light from the side of the multilayer body that is facing away from the volume hologram layer through a partial metal layer for the purpose of recording si of the volume hologram in the volume hologram layer.

The technical problem, solved using the developed technical solution, is to create a new type of special protective sign designed for visual and instrumental identification of authenticity and integrity control of the marked object.

The technical result is an increase of not less than two times the degree of identifiability, security, reliability of visual control of authenticity and integrity, a significant difficulty in counterfeiting with high durability and effectiveness of protective properties.

To achieve the specified technical result, it is proposed to use a multilayer security element that authenticates the product, containing a multilayer film structure with layers on which information is recorded. The basis of the developed element is an optically transparent mechanically strong film, on one side of which a layer with controlled adhesion is applied, then a thermoplastic polymer composition is applied, which is used to form micro- and nanorelief of flat optical elements or the relief of a rainbow hologram, on top of which a layer with a high index is deposited refraction, in the thermoplastic layer by embossing, a relief of the diffraction structure is formed, organized by the type of reflective phase diffraction array, which optically visualizes a given bright contrasting multi-color macro image, and also participates in the formation of at least one of the interfering beams when recording a full-parallax hologram, at least one information layer with explicit and hidden elements is deposited on top of the layer with a high refractive index, protective the signs of which are based on the known optical, spectral and physico-chemical properties of substances and their compositions, then a photopolymer or other register is applied iruyuschy recording layer with a volume of the interference pattern, over which the recording and after fixing it polnoparallaksnoy volume hologram layer sequentially deposited paint composition and adhesive layer.

The developed material design of the sign is based on a combination of holographic protective images obtained due to micro- (nano-) relief, with a full-parallax three-dimensional image recorded in a photopolymer or other recording layer with a three-dimensional recording of the interference structure, as well as other information layers with explicit and hidden elements whose protective features are based on the known optical, spectral and physico-chemical properties of substances and their compositions, which allows the formation of any artistic -graficheskuyu or digital information. Moreover, to increase the efficiency of visual identification, pieces of information formed in different layers by fundamentally different methods can be combined into a single plot.

The base of the protective element may be made of polyethylene terephthalate. The controlled adhesion layer may be a silicone film or a peat wax layer. The thermoplastic layer used is created by a polymer composition, for example, based on acrylates, polystyrene or polyvinyl butyral, and the micro- and nanorelief formed in it by embossing contain, in addition to the holographic rainbow image, various flat optical elements such as Fresnel lenses, kinoforms or microprisms. The layer with a high refractive index in the visible range can be made of titanium dioxide or zinc oxide. Typically, the thickness of the photopolymer layer is at least 10 μm, and the photopolymer layer itself is made of a HRF-150X001-38 or GP-20 photopolymer. Layers with colorful compositions can be made of alkyd enamel or polyester paint.

Also, to achieve the specified technical result, a developed method for producing a multilayer protective element can be used. The developed method is characterized by the fact that a layer with controlled adhesion was applied to one of the sides of the base, and then a thermoplastic polymer composition intended for the formation of micro- and nanorelief of flat optical elements or the relief of a rainbow hologram, over which a layer with a high refractive index was applied, in a thermoplastic the embossed layer formed a relief of the diffraction structure, organized by the type of a reflective phase diffraction grating, which optically visualizes a given bright a contrasting multi-color macro image, and also participates in the formation of at least one of the interfering beams when recording a volume hologram onto a substrate prepared in this way, containing a micro- and nanorelief diffraction structure, by printing and / or digital printing methods, including image formation by exposure to laser material radiation, caused at least one information layer with explicit and hidden elements, the protective features of which are based on known optical, spectral the physical and physicochemical properties of the substances and their compositions, then a photopolymer or other recording layer was applied with a volume recording of the interference structure, intended for recording volumetric full-parallax holograms by exposing the projected image and its subsequent development, a layer with a colorful composition was applied over the photopolymer layer to improve visibility of images in the relief and photopolymer layers, as well as improving the effectiveness of the use of the protective sign due to the formations additional protective features possessing the migrating ability of the components penetrating the surface or into the volume of the sign carrier, then a layer of adhesive intended to adhere the sign to the surface of the object was applied. Additionally, information of variable content was applied to the surface of the sign thus formed using known methods of printing or digital printing, including image formation by exposure to the material of laser radiation.

In accordance with the invention, in general, the material construction of a special protective sign includes a polymer base and applied information layers, which differ in the principles of generating graphic art or digital information, which allows for effective visual identification of authenticity and the use of machine-readable technologies. A distinctive feature of the present invention is that holographic security images obtained by micro- (nano-) relief (i.e., rainbow holograms) in one layer are combined with a full parallax three-dimensional image recorded in another photopolymer or other recording layer with a three-dimensional recording the interference structure, as well as with other information layers with explicit and hidden elements, the protective features of which are based on the known optical, spectral and physico-chemical properties of substances and and x tracks. This combination allows you to generate any kind of graphic art or digital information, fragments of which, formed in different layers by fundamentally different methods, can be combined into a single plot to increase the efficiency of visual identification of the sign and the use of automated instrumental control technologies.

The developed element can be obtained by the following technology.

The basis of the multilayer material is a transparent film made, for example, of polyethylene terephthalate (PET). A layer with adjustable adhesion is applied to it to destroy the sign when it is trying to separate it from the surface of the object. It, for example, may be a silicone film or a layer of peat wax.

Then a layer of thermoplastic polymer composition is applied to emboss the micro- and nanorelief of the optical element or the relief phase hologram. A layer with a high refractive index in the visible range is applied over it to improve the visibility of the relief elements and increase the influence of the relief elements on the recording of a photopolymer volumetric full-parallax hologram.

At the next stage of manufacturing a sign in a thermoplastic layer by embossing, a specially designed relief of a diffraction structure is formed, organized by the type of a reflective phase diffraction grating, which optically visualizes (restores) a given bright contrasting multi-color macro image and also participates in the formation (at the next stages) of interfering beams at volume full-parallax hologram recordings.

At least one information layer with explicit and hidden (instrumental) elements, protective features is applied to a substrate prepared in such a way, containing a micro- and nanorelief diffraction structure, by printing and / or digital printing methods, including forming an image by exposure to the material of laser radiation. which are based on the known optical, spectral and physico-chemical properties of substances and their compositions.

The next stage in the formation of the multilayer material construction of the sign is the deposition of a photopolymer or other recording layer with a volume recording of an interference structure with a thickness of at least 10 μm, intended for recording a volume full-parallax hologram, exposure of the projected image and its subsequent manifestation (fixing).

The next layer of the sign is applied with a colorful composition, for example, black and is intended to improve the visibility of images on the relief and photopolymer layer, as well as to increase the efficiency of the use of the protective sign due to the formation of additional security features, for example, elements with the migrating ability of components penetrating the surface or volume of the sign carrier.

Next, a layer of adhesive is applied, intended for gluing the sign, for example, with adhesive of constant stickiness on the surface of the object.

The backing with a release layer is designed to protect against premature stickers or sticking marks in a roll or foot of sheets.

Additionally, information of variable content (for example, numbering) is applied onto the surface of the sign thus formed, using known methods of printing or digital printing, including image formation by applying laser radiation to the material (in the latter case, the information layer is also formed in the volume of the material structure of the sign).

Claims (10)

1. A multilayer security element that authenticates the product, containing a multilayer film structure with layers on which information is recorded, characterized in that the base of the specified element is an optically transparent mechanically strong film, on one side of which a layer with controlled adhesion is applied, then applied a thermoplastic polymer composition, on which flat optics elements and an embossed rainbow hologram are formed by embossing micro- and nanorelief, on top of the specified composition applied A layer with a high refractive index is formed, in the thermoplastic layer by embossing, a relief of the diffraction structure is formed, organized by the type of a reflective phase diffraction grating, which optically visualizes a given bright contrasting multi-color macro image and also participates in the formation of at least one of the interfering beams when recording volumetric full-parallax holograms, at least one information layer with explicit and hidden electrons is deposited on top of the high refractive index layer cops, and then applied to the photopolymer layer with the volume record interference structures over which after recording therein polnoparallaksnoy volume hologram layer sequentially deposited paint composition and adhesive layer. 2. The protective element according to claim 1, characterized in that the base is made of polyethylene terephthalate. 3. The protective element according to claim 1, characterized in that the layer with controlled adhesion is a silicone film or a layer of peat wax. 4. The security element according to claim 1, characterized in that the thermoplastic layer is a polymer composition, for example, based on acrylates, polystyrene or polyvinyl butyral, and the micro- and nanorelief formed in it by embossing contain a relief (rainbow) hologram and elements of flat optics such as a Fresnel lens, kinoform, or microprism. 5. The protective element according to claim 1, characterized in that the layer with a high refractive index in the visible range is made of titanium dioxide or zinc oxide. 6. The protective element according to claim 1, characterized in that the thickness of the photopolymer layer is at least 10 microns. 7. The protective element according to claim 1, characterized in that the photopolymer layer is made of a photopolymer brand HRF-150X001-38 or GP-20. 8. The protective element according to claim 1, characterized in that the layer with the colorful composition is made of alkyd enamel or polyester paint. 9. A method of producing a multilayer protective element, characterized in that a layer with controlled adhesion was applied to one of the sides of the base, and then a thermoplastic polymer composition was created on which flat optics and a relief rainbow hologram were created by forming micro- and nanorelief, a layer was applied over it with a high refractive index in the visible range to improve the visibility of microrelief elements and increase the influence of relief elements on the recording of a photopolymer volumetric full-parallax hologram, then, in the thermoplastic layer, an embossment was formed of the relief of the diffraction structure, organized by the type of a reflective phase diffraction grating, which optically visualizes a given bright contrasting multi-color macro image and also participates in the formation of at least one of the interfering beams when recording a volumetric full-parallax hologram onto such a prepared a base containing a micro- and nanorelief diffraction structure by printing and / or digital printing methods, including In order to create an image by influencing the material of laser radiation, at least one information layer was applied with explicit and hidden elements, then a photopolymer layer was applied with a volume recording of the interference structure, intended for recording volumetric full-parallax holograms by exposing the projected image and its subsequent development, over the photopolymer layer a layer with a colorful composition designed to improve the visibility of images in the relief and photopolymer layers, and also increase the effectiveness of the use of the protective sign due to the formation of additional protective features that have the migrating ability of the components penetrating the surface or into the volume of the carrier of the sign, then applied a layer of adhesive designed to adhere the sign to the surface of the object. 10. The method according to p. 9, characterized in that in addition to the surface of the thus formed sign inflicted information of variable content using known methods of printing or digital printing, including image formation by exposure to the material of laser radiation.