Security element, particularly security tag with indication of tempering

FIELD: physics.

SUBSTANCE: invention relates to a security element having the following layers: a) a substrate, b) a first lacquer layer having a diffraction-optically active structure containing a hologram, a surface relief, a diffraction structure, a diffraction grating or kinegram, c) a second lacquer layer, e) an adhesive coating. In case of an attempt at tempering with the security element, the first lacquer layer (b) separates from the second lacquer layer (c) and the optically active structure entering the first lacquer layer (b) in both the separated first lacquer layer and the second lacquer layer remaining on the protected object becomes visible as a negative.

EFFECT: disclosed security element provides unambiguous determination of tempering with the security element.

14 cl

 

The invention relates to a protective element, in particular a protective label, which allows you to set manipulation. In particular, the present invention relates to a protective labels, which are in sound condition are invisible optically active structure, which becomes visible only after manipulation.

From the publication WO 01/93231 known protective sticker that has two structures, one of which is invisible in the intact state of the diffractive structure, and another structure, the controlling Department. When attempting manipulation exfoliate at least part of the reflecting layer, due to which it becomes noticeable new, visually identifiable information.

The present invention was to develop a protective element, in particular a protective label, allowing manipulation and protective sign becomes visible only during handling and in undamaged condition imperceptible.

In addition, the protective element has on both surfaces manipulated able to have a smooth, non-stick surface.

Thus, an object of the present invention is a protective element, in particular, security label, characterized in that it has the following layers:

a) a substrate,

b) the first lacquer layer is, which contains optically active structure

c) a second lacquer layer,

d) optionally, a reflective layer and/or layer with optical characteristics

e) adhesive coating.

If necessary, between the layers (a) and (b) may be a layer of adhesion promoter.

Under optically active structure here refers, in particular, diffractive optical active structures such as holograms, the surface relief diffractive structure, the diffraction grating, Kinegram and the like.

Under the reflecting layer is, in particular, a metal layer or apparent metal layer.

Under the layer with the optical characteristics is understood here, in particular, the colored layer or the luminescent layer, in particular a fluorescent or phosphorescent properties.

But on the optical properties of the layer can be influenced visible dyes or pigments, luminescense dyes or pigments that fluoresce or phosphorescent in the range of the visible spectrum, UV or IR range, eye-catching pigments, liquid crystals, mother-of-pearl sheen, bronze and/or changing the color of the multilayer pigments and heat sensitive paints or pigments. They can be used in various combinations. In addition, phosphorescent pigments can be used independently of Il is in combination with other dyes and/or pigments.

As substrates are suitable, for example, carrier film, preferably a flexible plastic films, for example, PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, fluoropolymers like PTFE, and the like. Carrier film preferably has a thickness of 5-700 μm, preferably 5-200 μm, particularly preferably 5-100 μm.

Next, the substrate can also be used coextrudable synthetic films or plastic films, pre chemically or physically treated, e.g. coated with acrylate synthetic film.

In addition, the substrate may be a metal foil, for example, foils of Al, Cu, Sn, Ni, Fe or foil of stainless steel with a thickness of 5-200 μm, preferably 10-80 μm, particularly preferably 20-50 μm. Foil may also be surface treated, coated or kasirovani, for example, synthetic materials or varnished.

In addition, the substrate can also be used on paper or composite materials with paper, for example, the composites with plastics weighing between 20 and 500 g/m2preferably 40-200 g/m2.

If necessary, the substrate can be coated with adhesion promoter.

On the substrate to cause the lacquer layer (b).

This lacquer layer may be radiation-curable varnish layer is whether thermoplastic varnish layer.

Curing radiation lacquer may, for example, contain a radiation-curable paint system on the basis of polyester, epoxy or polyurethane systems, which contains two or more different, well-known specialist photoinitiator that at different wavelengths can initiate curing paint systems to varying degrees. For example, if one photoinitiator can be activated at a wavelength of from 200 to 400 nm, the second photoinitiator can then be activated at a wavelength of from 370 to 600 nm. Between wavelengths activation of both photoinitiators should be cured for a sufficient difference, to avoid too strong excitation of the second photoinitiator, when activated first photoinitiator. The range in which excited the second photoinitiator must lie in the wavelength range bandwidth used substrate. For the main curing (activation of the second photoinitiator) can also be applied to the electron irradiation.

As the radiation-curable varnish may also be used water-based lacquer. The preferred coating system on polyester basis.

The formation of surface patterns, that is, diffraction, x-ray or embossed patterns is, for example, at a controlled temperature through the m matrix, or with application forms for stamping in the radiation-curable varnish layer, which results in the activation of the first photoinitiator was previously overiden up to the gel point and the time of formation is at this stage.

If you can apply waterborne radiation curable varnish, if necessary, previously can be drying, for example, the IR emitter.

Thermoplastic lacquer, which is then stabilized, consists of methyl methacrylate (MMA) or ethylcellulose basis or is based cycloolefinic copolymer, and a polymer base for establishing the desired thermoplastic properties or to establish subsequent stabilization added modifiers.

Depending on the polymer base as modifiers are suitable, for example, additives to establish the desired glass transition temperature, the range in which the varnish is in a thermoplastic condition, or modifiers to achieve long curing lacquer.

Preferably, the components are dissolved in a solvent, for example aqueous solvents, water, alcohols, ethyl acetate, methylethylketone and the like or their mixtures.

In the lacquer on the basis of MMA to increase the glass transition temperature is particularly preferably added, for example, nitrocellulose.

In the lacquer on the basis of cycloolefinic polymers are particularly preferably added, for example, polyethylene is new wax.

In Lac based on the ethyl cellulose to control utverjdaemogo add standard cross-linking agents.

The concentration of the polymer base in the finished lacquer is 4-50%, depending on the polymer base, the desired properties of the lacquer and the type and concentration of the modifier.

Structuring thermoplastic lacquer can be carried out in the usual way thermal embossing.

The thickness of the layer of varnish may vary depending on the requirements of the final product and the thickness of the substrate and is usually from 0.5 to 50 μm, preferably from 2 to 10 μm, particularly preferably from 2 to 5 microns.

Now this lacquer layer (b) is applied following the varnish layer c), which may have the same composition as the first lacquer layer (b), or another structure.

If necessary, this varnish layer c) may contain a second optically active structure.

Consequently introduced in the first lacquer layer (b) optically active structure disappears, that is, becomes invisible.

Then on the second varnish layer c) if necessary, put a reflective layer or layer with optical properties.

This reflecting layer may consist of a metal, a metallic compound or alloy. As the metal layer suitable layers of Al, Cu, Fe, Ag, Au, Cr, Ni, Zn and the like. As metal compounds suitable is, for example, the oxides or sulfides of metals, in particular, TiO2, chromium, ZnS, ITO, ATO, FTO, ZnO, Al2O3or silicon oxides. Suitable alloys are, for example, alloys of Cu-Al alloys Cu-Zn and the like.

The coat may be applied over the entire surface or part.

Further, there may be applied a layer with optical characteristics. This layer may be deposited on the entire surface or part.

In one particular form of implementation can be used as the metal layer, and a layer with optical properties, and the layers can be applied on the entire surface or part of it, register to register and/or with the exact combination or at least partially overlap.

This structure is applied to the adhesive coating, preferably a self-adhesive coating, holodnojarivski coating or heat sealable coating.

This adhesive-coated protective element is attached to the object that you want to protect.

If the structure is applied on a protected object with the adhesive coating or holodnokatanogo coating, the adhesion between the layers a and b must be greater than the adhesion between the layers b and c.

In contrast, when used as a conversion element and applications using a heat sealable coating, the adhesion between the layers a and b must be less than the adhesion between the layers b and c.

When attempting manipulation, the particular when you try to remove the tape or label with the protected object, the first lacquer layer (b) is separated from the second varnish layer c), introduced in the first lacquer layer (b) optically active structure as in the first (removed)and the second (remaining on the protected object) lacquer layer becomes visible as a negative.

If the security element is applied on a protected object in the form of transferable element, the identity can be established through auxiliary means, for example, using the so-called TESA test. For this purpose, the protective element put sticky tape and then remove. Introduced in the first lacquer layer optically active structure as on the sticky tape, and remaining on the protected object lacquer layer will be visible as a negative.

In addition, the surface remaining on the protected object lacquer layer, and the surface of the removed portion is smooth and dry and non-sticky feel (dry effect of branch).

The protective element according to the invention can be applied as an element of protection on packaging materials or used in packaged foods as a label in any shape (rectangular, round, oval) or as adhesive tape for protection of objects or packages.

Example

Patterns labels

a) polyester film 36 microns

the adhesion promoter

UV is W hat is the layer with holographic embossing 2 microns

UV painted lacquer layer 2 μm

self-adhesive floor

b) polyester film of 50 μm

UV-curable varnish layer with holographic embossing 2 microns

UV-curable varnish layer with holographic embossing 4 microns

a metal layer of Al, 200 nm

heat sealable coating

c) sextravaganza polyester film 12 μm

UV-curable varnish layer, painted, with holographic embossing 2 microns

UV-curable varnish layer, colored differently, 4 µm

luminescense floor

self-adhesive floor

d) pre-treated PP film 23 μm

UV-curable varnish layer with holographic embossing 20 microns

UV-curable varnish layer with holographic embossing 4 microns

a metal layer of Cu, 50 µm

self-adhesive floor

(e) polyester film 100 μm

the adhesion promoter

thermoplastic varnish layer with holographic embossing 2 microns

UV-curable varnish layer with holographic embossing 4 microns

a metal layer of Al of 100 nm, partially

luminescense floor, partially or over the entire surface

self-adhesive floor

f) polyester film 100 μm

the adhesion promoter

UV-curable varnish layer with holographic embossing 2 microns

thermoplastic varnish layer with holographic embossing is 4 microns

a metal layer of Al of 100 nm, partially

luminescense floor, partially or over the entire surface

self-adhesive floor

g) polyester film 100 μm

the adhesion promoter

thermoplastic varnish layer with holographic embossing 4 microns

thermoplastic varnish layer with holographic embossing 4 microns

a metal layer of Al 120 nm, partially

luminescense floor, partially or over the entire surface

self-adhesive coating.

1. The protective element, which has the following layers:
a) a substrate,
b) the first lacquer layer, which contains a diffraction-optically active structure, which contains the hologram surface relief diffractive structure, the diffraction grating or Kinegram,
c) a second lacquer layer,
e) adhesive coating,
characterized in that when attempting manipulation separates the first lacquer layer (b) from the second lacquer layer) and put in first a layer of lacquer b) optically active structure as in the first separated, and in the second, remaining on the protected object, the lacquer layer is visible as a negative.

2. The protective element under item 1, characterized in that between the second lacquer layer) and coating (e) placed a reflective layer and/or layer with optical characteristics (d).

3. The protective element under item 1, characterized in that the substrate premenitchareenitcharee film, metal foil or paper or composite materials with paper.

4. The protective element according to one of paragraphs.1-3, characterized in that the substrate pre-applied chemically or physically treated synthetic film or sextravaganza synthetic film.

5. The protective element under item 1, characterized in that between the layers a) and b) the applied adhesion promoter.

6. The protective element under item 1, characterized in that the second lacquer layer contains optically active structure.

7. The protective element under item 1, characterized in that the optically active structure of the second lacquer layer is different from an optically active structure of the first lacquer layer.

8. The protective element under item 1, characterized in that the reflecting layer and/or layer with optical elements applied to each other with the drive with the exact combination or at least partially overlap.

9. The protective element under item 1, characterized in that the adhesion between the layers a) and b) is greater than the adhesion between the layers (b) and (C).

10. The protective element under item 1, characterized in that the adhesion between the layers (a) and (b) is less than the adhesion between the layers (b) and (C).

11. The protective element under item 1, characterized in that the first and/or second lacquer layer is a radiation-curable varnish layer.

12. The protective element under item 1, characterized in that the first and the second lacquer layer is a thermoplastic varnish layer.

13. The protective element under item 1, characterized in that the adhesive coating is a self-adhesive, holodnojarivski or heat sealable coating.

14. The application of the protective element according to one of paragraphs.1-13 for security labels, adhesive tapes or protective films.



 

Same patents:

FIELD: printing.

SUBSTANCE: invention relates to a security element, in particular to security labels or adhesive tapes. The security element comprises the following layers: a) a substrate-carrier; b) a reflecting layer or layer with a high refractive index; c) a partial separation layer of varnish; d) the adhesive intermediate coating applied to the entire surface; e) the adhesive layer applied on the entire surface where the adhesive coating d) is in those places where there is no separation layer of varnish c), adhesion of the layer b) with the substrate-carrier a) is disturbed, and in case of attempt to manipulate due to separation of the layer b) it is separated from the substrate-carrier a) in those areas where there is no separation layer of varnish c).

EFFECT: proposed security element provides ease of detection of manipulation with it.

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EFFECT: high strength, longevity and moisture protection of the label, wider range of labels owing to higher prominence of structural layers.

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FIELD: process engineering.

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EFFECT: simplified procedure, excluding one layer of transparent film and one layer of laminating adhesive.

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6 cl, 6 dwg

FIELD: chemistry.

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10 cl, 3 tbl, 7 ex

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39 cl, 28 dwg, 6 tbl

Protective device // 2338267

FIELD: protective device.

SUBSTANCE: protective sticker contains a film-carrier, and also first layer consisting of non-attaching polymeric coating printed on the film, which has UV printing ink for rotary printing and determines attaching points, which form first pattern and principally do not have non-attaching polymeric coating. The protective sticker also contains second layer made of attaching material having several attaching pigmented polymeric coatings to lay the second pattern on the sticker. The second layer is stuck to the carrying film through attaching points of the first layer, and the protective sticker additionally contains a glue for sticking to the supporting element.

EFFECT: production of sticker, which makes interference in documents to which sticker is attached evident.

36 cl, 6 dwg

FIELD: protective element and method for manufacturing it, forgery-protected paper and security with a similar protective element.

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EFFECT: claimed protective element has significantly higher forgery protection degree, due to easily and clearly discernible color effects and variable optical effects, which are impossible to imitate with simple technical means.

5 cl, 33 dwg

FIELD: physics.

SUBSTANCE: security element for identification of articles relates to counterfeit protection and authentication of securities, which can be used for concealed marking of various objects in order to prevent unauthorised production of said objects and simplify authentication thereof. The security element comprises a stack of polymer layers glued to each other, each having a certain type of semiconductor quantum rods which luminesce in different spectral regions and are oriented in directions orthogonal to each other.

EFFECT: high reliability of the security element and longer service life thereof.

4 dwg

FIELD: physics.

SUBSTANCE: protected document contains an opaque substrate, optical wave guide located on the substrate and/or in it and a coupler for light conducting into or out of the wave guide. Meanwhile the coupler has a hole passing through a wave guide and through the whole opaque substrate.

EFFECT: enhanced protection against document forgery.

15 cl, 9 dwg

FIELD: physics.

SUBSTANCE: invention relates to the method and line for fabrication of insert for a multilayer film, to the multilayer film itself, in particular to the inserts for further comprising into the smart card, where the film substrate with several electronic devices placed on it and conjugated with each other is fed to the image reader, which allows to obtain a position of an electronic device, as separate object. Meanwhile the laser sensitive levelling film is applied on the film substrate, at first is fed to the device for laser cutting, and the data on the position of the respective electronic devices on the film substrate obtained by the image reader, is transmitted into the device for laser cutting and this device is controlled for making the cut-outs aligned with the positions of electronic elements. The levelling film with cut-outs, and the film substrate in assembly section are connected and, with precise matching having aligned with reference to each other are fixed, forming an insert. Meanwhile, using the laser cutting device for making of cut-outs, and using one more laser cutting device or the marking device for each object or the group of objects on the levelling film a mounting mark is applied depending on the obtained position of the electronic device on the film substrate.

EFFECT: method improvement.

17 cl, 2 dwg

FIELD: printing.

SUBSTANCE: invention relates to the field of protective elements for valuable documents or security documents. The method of manufacturing the protective element for a security document and the protective element comprises a substrate defining the first and second opposite sides, and in the substrate a translucent area is formed by applying material which increases the transparency of the substrate, and for forming the said translucent area the method comprises the following steps: the first step - applying the material for obtaining the impermeable substrate in the first area of the first side, and the first area surrounds the second area of the first side which does not comprise the said material creating impermeability, at that the material creating impenetrability prevents impregnating of the substrate in the first area by the material increasing the transparency. The second step - the application of the material increasing the transparency on at least the second area so that to impregnate the substrate and to make it transparent in this area, and the first area and the second area form the first pattern and the second pattern, respectively, which form an image that is viewed from two sides of the substrate.

EFFECT: invention provides creation of the simple and inexpensive protective element that ensures high degree of protection against forgery.

17 cl, 17 dwg

FIELD: physics.

SUBSTANCE: article comprises a carrier and a multilayer security element having a latent image. The security element is invisible when the document is viewed at a right angle, but becomes visible when the viewing angle is changed. The latent image is in the form of two identical graphic elements of different colours, which are formed by mutual displacement of portions of three-dimensional raster and raster of a multi-colour coating by a distance which is a multiple of half the period of the raster, and which are located in the same plane. The elements are located at a distance which enables observation of a stereoscopic image thereof using anaglyph glasses and/or colour filters.

EFFECT: high security of a valuable document.

15 cl, 7 dwg

FIELD: printing industry.

SUBSTANCE: multilayer material on a paper or polymer substrate is proposed, containing layers with optical-variable properties. Indistinguishable with the naked eye optical-variable layers with mutual opposite direction of circular polarisation, represent two identical images of the same graphic element, offset in the same plane by a predetermined distance, which enables to observe a stereoscopic image of the graphic element using glasses with polarising light filters having mutually opposite direction of circular polarisation.

EFFECT: increased protection level with a simple method of determining the authenticity of an article.

9 cl, 4 dwg, 3 ex

FIELD: printing industry.

SUBSTANCE: multilayer protected composition is formed with an additional multilayer element. The element is formed on the paper surface. The element comprises a multi-colour coating in the form of periodic raster formed by at least two paints of different colours contrasting relative to the paper surface. The paints contain luminescent compounds having daily luminescence in the visible range of light under the influence of natural lighting. The combinations of paints are such that the integral colour of the additional multilayer protected element is visually perceived as unsaturated close to achromatic. One of the embodiments of the protected element forms graphic shape or is part of a graphic shape, which changes its visual display due to changing its colour grade and/or optical density and/or saturation when copying the document on a printing device operating in a colour system CMYK.

EFFECT: increased level of protection of paper or document from forgery by applying a new security feature.

12 cl, 8 dwg, 6 ex

FIELD: physics, signalling.

SUBSTANCE: invention relates to a security element, a method of making said security element and use thereof for marking, authenticating or identifying objects or living beings, such as people, animals or plants, said element comprising one or more layers of materials that are arranged next to or on top of each other or that overlap, which may include a security marking, wherein at least one layer of the security element has, at least regionally, a crackle pattern in form of tears or cracks, nicks, wear areas or shrinkages and possible impurities, which can be scanned and detected together or separately as security features.

EFFECT: disclosed security element enables individual marking and identification.

15 cl, 3 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to a security element having a carrier with a first and a second surface opposite each other, wherein the first surface has a patterned region with variable optical properties, having a relief patterned region and a coating, wherein the coating is formed by substantially nonlinear basic elements. The relief patterned region and the coating are superimposed such that at least certain portions of the coating are completely visible when viewed at a right angle and are hidden when viewed at an acute angle. The relief patterned region is in form of depressions on the second surface of the carrier and at least certain portions of the coating are located in said depressions. The nonlinear basic elements are at least partly located on lateral sides of the depressions, where in each case a depression and basic elements located on its lateral sides together form one structural element.

EFFECT: disclosed security element improves counterfeit protection.

30 cl, 12 dwg

FIELD: printing.

SUBSTANCE: invention relates to a method of production of counterfeit-proof document and/or valuable document comprising a polymer multilayer composite or consisting of it, at that the polymer multilayer composite is formed of a polymer multilayer partial composite and a polymer coating layer, and at that the polymer multilayer partial composite and/or polymer coating layer comprises a laser-sensitive component, with the following process stages: A) on the polymeric multilayer partial composite by means of jet printing the first personalised information attribute is applied in the form of a colour printing layer obtained by method of inkjet printing, B) on the printing layer obtained by method of inkjet printing a polymer coating layer is applied and by thermal lamination is connected to the polymer multilayer partial composite and C) obtained in step B) polymer multilayer composite of counterfeit-proof document and/or valuable document by means of laser engraving the second personalised information attribute is applied.

EFFECT: invention relates to counterfeit-proof document and/or valuable document obtained by such method.

17 cl, 5 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

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