Embossing film and protected document

FIELD: films for embossing, namely for hot embossing.

SUBSTANCE: film for embossing includes transfer film placed on carrying film with possibility of releasing. Transfer film includes at least one color layer whose colored image changes depending upon viewing angle and whose colored layer includes coloring interference pigments with metallic core. Structure of embossing film includes arranged in predetermined order: carrying film; removed layer; protecting layer; colored layer; magnetized layer and, if necessary, cohesion layer. Said transfer film includes protecting layer, colored layer and magnetizing layer. Invention also relates to protected document as it allows to apply on document coating preventing its counterfeit and providing identification of document without using any technical means, simply by human eyes.

EFFECT: simplified process for protecting document against counterfeit with use of embossed film.

17 cl, 2 dwg

 

The invention relates to foil stamping, in particular film, hot stamping, containing situated on the carrier film with the possibility of separation of the transfer ribbon, and document protection, in particular banknotes, passports, cards for identity cards, cheque cards, credit cards or the like.

Foil stamping, in particular film, hot stamping, known from the prior art. The famous film hot stamping transfer film, for example, under the action of heat and pressure is transferred from the carrier film to the substrate to which the transfer film adheres when using the bonding layer, which understand the main layer of the heated adhesive or a layer of hardening under the action of radiation of glue.

In particular, for the application of security features, for example, to securities, such as banknotes, credit cards, passports, etc. or other securable objects, a large number of used foil hot stamping.

From the document DE 4101301 A1 is known an element of protection, which consists of equipped with a magnetic coating film, the coating has a light, soft magnetic pigments. In addition, from DE 4101301 A1 famous fabricated using a security document protection. Superior protective properties should be obtained, in particular, through the use of the soft magnetic pigments, which unlike standard magnetic pigments have special magnetic properties and in this respect, the forgery of the safety element is difficult. In addition, these magnetic pigments have a light color, which is suitable for the manufacture of a magnetic layer with a light of its own color. This bright magnetic layer is different from the traditional magnetic layer with a dark or black own color. Thanks to an additional coat of white above and/or below the magnetic layer can be enhanced light image.

The disadvantage is that by applying a white coating layer on traditional magnetic layer of dark or black custom colors offered in accordance with DE 4101301 A1 protection element may be a simple way tampered with. Identification of counterfeits known from DE 4101301 A1 element protection, if necessary, is possible only after the study of the magnetic properties. However, this requires additional validation step, which is often impossible to carry out on the spot. For example, when using a cheque cards in conjunction with the issuance of the check is carried out only optical card verification, as well as the comparison of the signature on the cheque card with the signature on the cheque. When applying light or white coating layer on a dark or black magnetic layer forged cheque is art it is not immediately apparent as a forgery.

From the document DE 4313519 A1 famous film stamping consisting of a carrier film and separated from her conversion film, and the conversion film is depicting the graphical elements of the decorative lacquer layer of lacquer containing pigments that lumines cent when exposed to light of certain wavelengths. Identification deposited on a substrate conversion film through irradiation with light with wavelengths that lead to luminescence pigments used.

Despite the fact that the use of luminescent pigments conversion film allows the preparation of highly improved protection element and therefore more secure document protection, authentication security feature is possible only when exposed to light with defined inducing wavelengths. Thus, authentication is made in accordance with the document DE 4313519 A1 element protection requires a light source for generating light with wavelengths of excitation. As such a light source is not always available, the authenticity of such protection may not always be checked.

Document DE 19907697 A1 discloses a multilayer conversion material, which has a material with variable optical properties, and optionally, at least, Odie is distinctive machine-readable material. As materials with variable optical properties are preferably liquid crystal materials or pearl gloss pigment (Iriodin®).

The disadvantage is that the proposed materials with variable optical properties are unsatisfactory svetasreni depending on the angle of the consideration and, therefore, do not meet the higher requirements for the protection of the protected object or document.

Therefore, the object of the invention is to provide a ready-to-use foil stamping, which allows you to add documents to the protection complicating fake coating, and this coating must be capable of identification of authenticity to the naked eye. Another object of the invention is to provide a document with the protection provided complicating fake turf.

Another object of the invention is to combine improved reliability from tampering with improved decorative properties.

Underlying the invention the task is solved through the provision of foil stamping, in particular film, hot stamping, containing situated on the carrier film with the possibility of separation of the transfer ribbon and transfer film has at least one color layer, the color shown is e which changes depending on the angle of consideration, moreover, the colored layer contains a colored interference pigments with a metal core.

Preferred improvements films stamping disclosed in dependent clauses 2-13 claims.

Underlying the invention the problem is solved as the document is protected, in particular banknotes, passport card for ID card, cheque card, credit card, and the like, and document protection is a layered structure, which has at least one color layer, the color image which varies depending on the angle of vision, and a colored layer contains the color of the interference pigments with a metal core.

Preferred improvements of document protection are disclosed in the dependent clauses 15-24 claims.

The term "angle of vision" in accordance with the invention is understood to mean the angle at which the color conversion layer film, which is part of the film embossing, or a colored layer on the document protection is viewed by the observer. Angle consideration refers to the angle between the normal to the film surface or the surface of the document to the protection and direction of gaze of the observer.

This means that at an angle of 0°the observer is looking perpendicular to the surface and foil stamping or document protection. At an angle, for example, 80° the viewer is looking at a very small angle to the surface of the foil stamping or document protection.

Depending on the angle of vision is changed caused by the observer color image of the color layer. Thus, it is possible to immediately verify the authenticity of the document with the protection that hosts having at least one color layer of the transfer film, a color image which varies depending on the angle of vision.

The document's authenticity protection, such as a passport or credit card may be checked by a simple tilt of the passport or credit card, i.e. by changing the angle of consideration. If nothing is happening or not happening of a certain change of the color image, the observer immediately knows that the document protection is a fake.

Thus, it is very advantageous is the manufacturer of the protection element, which at any time allows the check to the naked eye, without the use of additional technical devices.

In addition, this invention also allows the preparation of a bill of films or multilayer structure, which has a pleasant aesthetic or decorative appearance. For example, pass on PR is the market when using this invention the foil stamping can be applied to the color layer, which matches the colors of the enterprise and which when observed from different angles consideration causes a certain change in the color image.

The following embodiments of concern as to the colored layer, which is included in foil stamping, and to the colored layer, which is applied to the document protection.

The colored layer contains a colored interference pigments with a metal core, and depending on the angle of vision in the color layer occurs a shift or change in color tone. Unlike pearl gloss pigments, interference pigments with a metal core differ saturated own color. Thus, the change or shift in color from red to gold, from blue to red and so on

In addition, used in accordance with the invention, the colored interference pigments on the basis of a transparent metal core show outstanding ability to application of the coating. For example, these colored interference pigments with a metal core can reliably and decorative covered the dark, for example black magnetic layer.

Light reflected from the surface of the metal core due to metal effect, which is applied to the scattering of light at the edges of the plates. Optical St is istwa colored interference pigments with a metal core depend on the form of particles, particle size and size distribution of particles. The more pigment particles, i.e. less than the proportion of fine fractions and consequently more uniform shape, the brilliance and brightness of the color layer. The smaller the proportion of fine fractions of pigment particles, the saturated color or, respectively, the chromaticity in the color layer.

When using colored interference pigments with a metal core brightness depends on the angles that are positioned relative to each other the light source, the surface of the color layer and the observer. If the angle of consideration equal to the angle of incidence, i.e. the angle of reflection, the color layer is more brightly than at angles that differ significantly from the incidence angle, and accordingly the angle of reflection. This change of color of the image color layer relative to its brightness is determined by the ratio of the directly reflected light and diffusely reflected light. This effect in the larger pigments more visible than with the smaller pigments.

Thanks preferably a multilayer structure for the colored interference pigments with a metal core light not only repeatedly reflected, and the reflected rays of light at a corresponding layer thickness can interfere with each other and, thus, depending on the angle of rassmotreniju.delo to change the color of the image color layer.

According to another preferred variant implementation of the colored layer along with colored interference pigments with a metallic core also includes other pigments, preferably colored pigments. With the addition of other pigments may be any desired color tone and improved more visible svetasreni, for example, by the addition of carbon black.

If the colored layer contains, for example, colored interference pigments with a metal core and a transparent colored pigments, called the observer the color layer of the color impression thanks to the combination of the directed reflection of light from the surface of the color layer, and from the metallic core of the colored interference pigments, decomposition of light on the metal core, and light absorption by colored pigments. This caused the observer colour impression, i.e. the image of the color layer, depends on the angle of consideration, under which the observer looks at the colored layer.

If the angle consideration approaches the angle of reflection, caused by the observer an image of the color layer is essentially determined by the directional reflection of light from the metal core, as in this case, the observer's eye is on the line of the rays of reflected light.

If the eye is out of the rays of reflected light, i.e. the angle of the consideration is significantly different from the reflection angle, only a small part reflected from the metal core of light gets into the eye of the observer, and perceived by the observer of the image is determined mainly by diffuse-scattered and absorbed light.

In the first case, a colored layer is seen by the observer brilliant and bright. In the second case, a colored layer is seen by the observer dark and similar to a color pigment type.

In addition, depending on the angle of incidence of light in the color layer may be called a color change type. This is due to longer at a small angle of incidence, the length of the path of light in the color layer, resulting also absorb more light.

As the metal core can be used all known pigments with a metallic effect. Preferably the pigments with a metallic effect are selected from the group of: aluminum, copper, zinc, gold bronze, titanium, zirconium, tin and iron pigments, alloys of the above pigments, and mixtures thereof.

As colored interference pigment with a metal core turned out to be the most appropriate pigment Cromaflair®produced by Firma Flex Products, Inc., Santa Rosa, Calif./USA, which has an intense color.

When this colored interference pigments with m is a metallic core are one or more layers of non-ferrous metal oxides, which are selected from the group of TiO2, Al2O3, Fe2O3, Cr2O3, SnO2, ZrO2, CoFe2O3or Co3O4and mixtures thereof. Color pigment is governed by the thickness of the applied layer of a metal oxide or a deposited layer containing the metal.

Preferably between the metal core and colour containing metal or metal oxide layer deposited interference layer with a suitable refractive index, preferably vitreous layer. As the vitreous layer may be applied, for example, a layer of SiO2. But it is also possible to apply non-stoichiometric layers of SiOxbecause these layers contribute to the interference.

As the most appropriate was laminated aluminum pigments, with aluminum core caused interference layer, preferably of SiO2and the next color layer of a metal oxide, preferably a layer of Fe2O3.

This more intense colour used colored interference pigments with a metal core leads to a much stronger change the color of the image depending on the angle of vision, i.e. to intensive svetasreni and, therefore, more easy and reliable determination of authenticity, for example, document protection. Along with these value is positive superior protective properties, obtained by using the above-mentioned preferred pigments generally improved decorative impression.

Along with more intense svetasreni depending on the angle of vision of the interference pigments with a metal core have a very good capability to applying them to the cover. In this respect, these pigments can overlap, usually black or dark custom color magnetic layer or the magnetic strip when the color layer is located on top of the magnetic layer or the magnetic strip.

As inorganic colored pigments can be used in traditional inorganic colored pigments, for example iron oxide pigment, green chromakey pigment, pigment yellow crown, blue iron oxide pigment, red molybdate pigment, ultramarine pigment or pigments mixed colors. In addition, can be used an oxide pigments mixed phases, such as Nickel titanium yellow pigment, chrome yellow-titanium pigment, selenology pigment, the pigment cobalt blue, brown zinc-iron pigment, brown chrome-iron pigment, black ferromanganese pigment, black spsinel pigment or a pigment of carbon black.

As organic color pigments can be used in traditional organizes the e pigments. For example, can be used monoatomically, as, for example, acetoacetanilide, benzimidazole, naphthol-AS, lacquered β-Naftowy color material; disability, as, for example, atcontenttypes pigments or dipyrazolo; polycyclic pigments, such as, for example, chinagreen, dioxazine, fixed, diketo-pyrrolo-pyrol, isoindoline, derivatives of anthraquinone; or a metal complex pigments, such as copper phthalocyanines.

According to a preferred variant implementation in the color layer pigments laid in Lac. The varnish can use any nail Polish that is compatible and usually used with the appropriate pigments. For example, can be used varnishes based on polyesters, unsaturated polyesters, acrylates, etc.

According to another preferred variant implementation on the colored layer provides a protective layer, preferably a protective lacquer layer. After applying conversion film on a substrate, such as a document with a protective layer covers the color layer. The protective layer protects the colored layer against mechanical and chemical effects. A protective layer or protective lacquer layer should not be colorless, can be painted. The protective lacquer layer is transparent or essentially transparent.

According to the other preferred option implementation between the carrier film and a transferable film is removed layer. Remove the layer can be, for example, a layer of wax, which melts when heated foil stamping, when this occurs the separation of the carrier film with one hand and conversion film on the other side. When this separating layer located between the carrier film and the protective layer.

According to another preferred variant implementation of the transfer film facing away from the carrier film surface has a bonding layer. When applying foil hot stamping on a substrate, for example a document with a protection film hot stamping is applied to its cohering layer to cover the substrate, and then from the side of the carrier film is subjected to heat and pressure.

Bonding layer optionally may be provided on the substrate. In this case, you do not need to have bonding layer on the conversion film, which contains, for example, a protective layer and a color layer.

According to a preferred variant implementation of the transfer film contains namagnichivaemost layer. This namagnichivaemost layer may have a composition that is usually used, for example, cheque or credit card. On namagnichivaemost layer in the usual manner may be recorded and/or read from him information.

In a preferred improvement of the invention, the transfer film is made in the form on the wasps.

For example, the protective layer and the colored layer of the transfer film can be made in the form of the marking layer or strips. This marking strip set signature of authorized person.

Because the document protection must be recorded and/or read from it, then transfer film further comprises a magnetic coating. When this magnetic coating is preferably applied at a point away from the observer the surface of the color layer.

Conversion film, a colored layer, and if necessary magnetic layer relative to the protective layer can be limited to the appropriate scope. This means that when applying conversion film on a substrate, for example made in the form of a cheque card, plastic card, a protective layer may cover the entire surface of a plastic card, and a color layer, and if necessary, the magnetized layer may be limited by the form of strips, which is preferably parallel to the longitudinal side of the card and at a distance from its edges.

The above embodiments of concern and the corresponding invention instrument of protection.

According to a preferred improvement of the foil stamping is structured in the following the th sequence: carrier film, delete the layer, protective layer, a colored layer, and optionally bonding layer, and the transfer film includes a protective layer and a color layer.

According to a preferred improvement of the foil stamping is structured in the following sequence: carrier film removed layer, a protective layer, a colored layer, magnetic layer, and optionally bonding layer, and the transfer film includes a protective layer, a magnetic layer and a color layer.

In addition, it is preferable that the document is protected from its surface provides a bonding layer, a color layer and a protective layer.

According to another preferred variant implementation document with protection from its surface provides a bonding layer, magnetic layer, a colored layer and a protective layer.

The following information provides a sample implementation is not limiting, however, the scope of protection of the invention.

Figure 1 and 2 show examples of embodiments of the invention.

Figure 1 shows the film hot stamping, which has the structure of the carrier film 1, the removed layer 2, protective layer 3, the color layer 4, magnetic layer 5 and the bonding layer 6.

Figure 2 shows the document 8 with protection, which is provided with a layered article is octoroi, consisting in the direction from the surface of the protected document 8 of the bonding layer 6, a magnetic layer 5, the color layer 4 and the protective layer 3.

Following the specified film thickness and, accordingly, the specified thickness of the layers is not limited by the example, but in General can be used.

Film structure:

- Supporting film 1Film thickness: 12-26 μm, preferably 19 to 23 μm; Material: complex polyester, preferably polyethylene terephthalate
- Removable or detachable layer 2The films stamping is usually a wax layer

Layer thickness: up to approximately 1 micron
- Protective 3 layer: (protective lacquer)Layer thickness: 1-5 μm, preferably 1-3 μm
- A colored layer 4:Layer thickness: 1-15 μm, preferably 2-8 μm, preferably using layered interference pigment with a metal core, for example Chromaflair® (uncoated or with a multilayer coating, for example in combination with organic color pigments)
The magnetized layer 5:Layer thickness: 8 to 30 μm, preferably 10-20 μm, preferably when using pigments from γ-iron oxide for LoCo films, or barium-ferrite the pigments for HiCo-films
Bonding layer 6:The thickness of the layer: 1-12 μm, preferably 2-7 μm

The composition of the individual layers

Weight content
The protective layer 3
Methyl ethyl ketone660
Cyclohexanone110
Polymethyl-methacrylate (Tg: 121°)210
Polyvinylidene fluoride (d=1,75 g/m3)20
A colored layer 4
Methyl ethyl ketone260
Cyclohexanone130
Polyvinyl chloride/vinyl acetate copolymer (Tg=76°)110
Polymethyl-methacrylate (Tg: 121°)150
Pigment (for example, aluminum pigment coated with SiO2and Fe2O3)350
The magnetized layer 5
Methyl ethyl ketone370
Cyclohexanone120
Toluene60
Thermoplastic polyurethane (Tg = 16°)45
The vinyl chloride/vinyl acetate/vinyl alcohol - ternary copolymer (Tg = 89°) 35
Soy-lecithin (pH = 5,9 - 6,9)10
Barium-ferrite (d = 5,2 g/cm3)360
Bonding layer 6
Methyl ethyl ketone540
The ethyl acetate180
The vinyl chloride/vinyl acetate copolymer (Tg=76°)45
Methyl/butylmethacrylate copolymer (Tg=80°)140
Polymethyl-methacrylate (Tg=128°)80
Highly dispersed silicon dioxide (particle size: about 10 μm)15

Remove layer 2, protective layer 3, a colored layer 4, magnetic layer 5 and the bonding layer 6 is applied by conventional means, for example printed on the carrier film 1 and the well-known specialist in the field of producing films stamping.

Manufactured using the above-mentioned compositions foil hot stamping can be used for the production of the document 8 with reliable protection, such as banknotes, passports, cards for identity cards, cheque cards, credit cards and the like. For this film hot stamping is applied bonding layer 6 to the document 8 with reliable protection from the side of the carrier film 1 is subjected to heat and pressure. Under who is esteem heating the removed layer 2 is melted and activated bonding layer 6, consequently, consisting of a magnetic layer 5, the color layer 4 and the protective layer 3 transfer film 7 sticks to document 8 with protection. In this case constructed in this way document 8 with protection includes a layered structure in the following sequence: protect document 8, the bonding layer 6, a magnetic layer 5, a colored layer 4 and the protective layer 3.

1. Foil stamping, in particular foil hot stamping, containing situated on the carrier film (1) with the possibility of separating the transfer ribbon (7), characterized in that the transfer film (7) has at least one color layer (4), a color image which changes depending on the angle of consideration, and the colored layer contains a colored interference pigments with a metal core, and foil stamping has a structure in which are located in the following sequence carrier film (1), delete the layer (2), a protective layer (3), color layer (4), the magnetized layer (5), if necessary bonding layer (6), and the transfer film (7) contains a protective layer (3), a colored layer (4) and the magnetized layer (5).

2. Foil stamping according to claim 1, characterized in that the pigments are in the form of plates.

3. Foil stamping according to claim 1 or 2, characterized in that the metal core is reflective.

4. Foil stamping on p. or 2, characterized in that the metal core of the colored interference pigments coated with at least one interference layer, preferably vitreous layer and the interference layer applied at least partially transparent colored layer containing a metal and/or metal oxide.

5. Foil stamping according to claim 1 or 2, characterized in that the colored layer additionally contains colored pigments.

6. Foil stamping according to claim 1 or 2, characterized in that the colored layer (4) pigments laid in lacquer.

7. Foil stamping according to claim 1 or 2, characterized in that the protective layer (3) is transparent.

8. Foil stamping according to claim 1 or 2, characterized in that the transfer film (7) facing away from the carrier film (1) surface has a bonding layer (6).

9. Foil stamping according to claim 1 or 2, characterized in that the transfer film (7) is made in the form of a strip.

10. Document (8) with protection, in particular a banknote, a passport card for ID card, cheque card, credit card, and the like, characterized by the fact that it is a layered structure, which has at least one color layer (4), a color image which changes depending on the angle of consideration, and the colored layer contains a colored interference pigments with a metal core, while there are also featu is defined sequentially in the direction from the surface of document (8) with pin protection layer (6), the magnetized layer (5), a colored layer (4) and a protective layer (2).

11. Document (8) protection of claim 10, characterized in that the pigments are in the form of plates.

12. Document (8) protection of claim 10 or 11, characterized in that the metal core is reflective.

13. Document (8) protection of claim 10 or 11, characterized in that the metal core of the colored interference pigments coated with at least one interference layer, preferably vitreous layer and the interference layer applied at least partially transparent colored layer containing a metal and/or metal oxide.

14. Document (8) protection of claim 10 or 11, characterized in that the colored layer contains more colored pigments.

15. Document (8) protection of claim 10 or 11, characterized in that the colored layer (4) pigments laid in lacquer.

16. Document protection of claim 10 or 11, characterized in that the layered structure is made in the form of a strip.

17. Document protection clause 12, characterized in that the layered structure is made in the form of a strip.



 

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EFFECT: creation of cheap, easily discernible protective element not subject to destruction due to preservation of metallic integrity.

5 cl, 4 dwg

FIELD: processes of making protecting members such as filaments for protection against counterfeit of valuable papers, possibly determination of authenticity of bank notes and other bank-papers and credit documents.

SUBSTANCE: protecting magnetic filament includes polymeric film base onto which laminate structure of protecting means is formed. Such structure includes first masking layer of metallic material applied on base and successively arranged layer of magnetic material to be detected, additional masking layer of metallic material and outer covering film layer of polymeric material. First masking layer is arranged between surface of polymeric film base and layer of detected magnetic material whose characteristic magnetic parameters are limited by respective values: 0.1 Oe < Hc < 1 Oe; Hc/Hs ˜= 0.95 -0.98 where Hc - coercive force of magnetic material; Hs - saturation field of magnetic material.

EFFECT: enhanced degree of protecting valuable papers.

3 cl, 4 dwg

FIELD: printing industry.

SUBSTANCE: member has strip having polymer film layer bearing at least one opaque layer of optical density greater than 1.5 having images and/or symbols and/or signs cut out and at least one semitransparent layer of optical density less than 1.5. The semitransparent layer has optical density varying in length and/or width according to a predefined rule to let optical density in opaque layer cuts vary.

EFFECT: enhanced effectiveness in protecting products against falsification.

14 cl, 2 dwg

FIELD: multi-layered images.

SUBSTANCE: layered structure has layer sensitive to laser radiation, which is altered by laser effect and forms at least one portion of multi-layered image on part from part of image induced by laser and background layer and/or foreground layer. Part of image induced by laser is positioned so, that it at least partially overlaps with background layer and is at least partially overlapped by foreground layer. Material, sensitive to laser radiation, is made as mixture of various components sensitive to laser radiation, while the mixture is composed of two, preferably three different dying components, preferably components of pigments and/or color-forming dyes. Each one of these two or three components can be whitened by means of laser under appropriate certain conditions of laser radiation.

EFFECT: high degree of protection from forgery.

25 cl, 84 dwg

FIELD: protective element, having a composition of optically efficient structures in layered composite.

SUBSTANCE: protective element contains a layered composite for gluing onto substrate, containing form-making layer, protective layer of plastic material and reflective layer, which is positioned between form-making layer and protective layer of layered composite, while optically efficient structures of protective sign are formed in reflective layer. Protective sign has at least one surface with optical information element, on which reflective layer is made in form of mirror macro-structure with smooth profile, which in partial areas, forming relief display of information, is made curved so, that adjacent points with extreme values relatively to height of macro-structure profile are distanced for at least 0,3 millimeters. Point of macro-structure never has angle ±γ of local inclination of tangential surface to macro-structure, which angle is measured relatively to the surface of layered composite, greater than 7°. Surface with macro-structure is adapted for deflecting light, which falls in parallel manner at angle α relatively to normal onto surface of layered composite within limits of previously given angular range ε 14° around direction of mirror reflection, which includes angle (β=α) of reflection with normal line, so that element of optical information is visually visible, but can not be photo-copied.

EFFECT: high level of protection from photo-copying.

2 cl, 7 dwg

Important document // 2286885

FIELD: printed important documents.

SUBSTANCE: important document has at least one authenticity sign, which is made using luminescent substance on basis of crystalline latticework of base. Crystalline latticework of base is alloyed with at least one chromophore with electronic configuration (3d)2.

EFFECT: increased level of protection of important document from forgery.

7 cl, 3 dwg, 3 ex

FIELD: protective marks.

SUBSTANCE: method for making protective marks on carrier having first surface and second surface opposite to first surface, includes sealing of first surface with high-resolution varnish, carrier is then electrolyzed and then washed and dried.

EFFECT: higher level of protection of forgery.

3 cl, 25 dwg

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