The method of applying a product to protect against counterfeiting, comprising a phosphor antitoksicski

 

(57) Abstract:

The invention is intended for the printing industry and can be used for production of documents, labels, stamps, inscriptions on products and packaging. Preparing a suspension containing a binder, such as nitrocellulose, pigment, solvent and 1.5 to 7 wt.% antistokovskogo phosphor. The phosphor pre-processed ultrasound in the solution of a polar liquid at a frequency 22-40 kHz 20-30 minutes, does not change the brightness after this treatment. The surface prior to application of the suspension activate the electrical or corona discharge. The suspension is applied to the product using a roller printing, preferably flexo, by the way. Received labels are bright, easily detectable luminescence in the infrared rays. The phosphor can be used with any binder and pigment, which expands the scope of the claimed method depending on the type of product and consumer requirements. 3 C.p. f-crystals.

The invention relates to methods of covert recording information, in particular to methods of recording using antistatisch phosphors, and is intended to increase the degree of protection shall obom flexography, from fakes.

Methods of protection of printed products from fakes is described in the literature (A. Konshin A. Protection of printed products from counterfeiting. - M., 1999).

However, in this monograph the application antistatisch phosphors for protection of printed products from fakes is not considered.

Known way to protect images in which the hidden information recording is carried out using a phosphor recorded using UV sources (US 4930438, 283/83, 1990).

This method has the following disadvantages: easy to fake such labels, strong absorption of ultraviolet radiation band in thin films of organic coatings and glasses, the necessity of applying for detecting such labels are sources of high voltage.

The closest in technical essence to the present invention is a method of applying a hidden drawings, symbols, labels, by drawing on specified areas of the surface protective composition comprising antitoksicski the phosphor, and the identification tag using infrared radiation. (EN 2137612, 44 F 1/12,1999).

The known method is the lack of stability of labels and on the school processing antistatisch phosphors, with high hardness and coarse-grain structure (grain size of 6 μm), inevitably damage the soft rollers, flexo printing machines.

The technical result of the proposed method is to improve the reliability of identification labels, increase their resilience and reduce the damaging effects antistokovskogo phosphor on the soft cushions flexo printing machines.

The technical result is achieved due to the fact that in the method of applying to the surface of the protecting products against counterfeiting, comprising antitoksicski the phosphor, identification labels, using infrared radiation, according to the invention protects the printing composition is applied, preferably flexo printing method on activated directly before coating the surface of the product. Protecting composition comprises 1.5 to 7 wt.% antistokovskogo phosphor pre-exposed to ultrasound in the solution of a polar liquid and do not change the brightness.

The brightness of the label depends on the thickness of the protecting layer of the composition containing the phosphor. To obtain the required brightness you want the protecting layer coating was sufficiently "who ALOS to agree due to the pre-treatment antistokovskogo phosphor and activated prior to application of protecting the surface of the product composition.

To improve the adhesion of the dye composition to "seal" the surface of the applied activating it. Under the influence of, for example, electrical or corona discharge formed on the surface of the active radicals or ions. However, during storage as a result of interaction of active radicals or ions with the oxygen of the air, pollution of the environment, etc., there is a gradual "de-activated" surface. The inventors found that when applying the protective composition to the surface (polyethylene film), activated directly before application, the brightness of the label 20% higher than when using similar protecting composition deposited on the surface of activated three months earlier.

Hence we can conclude that the activation of "printing" products surface prior to application of the protective composition helps keep it more phosphor that provides improved reliability of the identification labels and enhances their resistance.

The application of the proposed method applied to the product protecting composition comprising antitoksicski l the seat reservation processing antistokovskogo phosphor, help reduce damage to the soft rollers, flexo printing machines. Pre-treatment antistokovskogo phosphor is exposed to ultrasound in the solution of a polar liquid (ethyl and isopropyl alcohols and aqueous solutions).

The sonication was performed using a conical nozzle ultrasonic disperser of USDN-1 at a frequency of 22 kHz for at least 30 min or dispersant MSE (UK) at a frequency of 40 kHz for at least 20 minutes In both cases, positive results were obtained. The result of this treatment, grinding and smoothing of the faces of the grains of the phosphor, with virtually no change in their size (which is especially important for antistatisch phosphors) and, most importantly, does not decrease the brightness unlike cinsulting phosphors, losing brightness when the abrasion. Obtained using previously subjected to this treatment antistokovskogo phosphor labels contain adequate for visual identification of the amount of phosphor.

The use of nonpolar solvents (benzene and hexane) gave the desired results.

Experimental study the years of the phosphor is less than 1.5 wt.% the brightness of the label is insufficient for a confident its detection, with a larger 7 wt.%, the phosphor precipitates and is not applied to the printing form.

Examples.

1. Preparing a suspension containing: nitrocellulose as a binder; a pigment; a solvent containing 80 wt.% ethanol and 20 wt.% ethyl acetate; antitoksicski the phosphor - 5 wt.% the weight of the paint.

The suspension of the tank is applied to the roller from the "anilox", then the raster roller, from which the paint is applied to the printing plate, where at a temperature of 60oIs the gelling of the binder.

Marks obtained by using a phosphor pre-exposed to ultrasound in the solution of a polar liquid, give a vivid, easily detectable in the infrared rays glow in contrast labels with the same amount of phosphor, but not exposed to ultrasound. They have more than a faint glow.

2. Preparing a suspension containing: raster binder 60 R 819909 company Hostmann Steinberg; a pigment; a solvent containing 80 wt.% ethanol, 20 weight. % ethoxypropanol; antitoksicski the phosphor 2.5 wt.% the weight of the paint. Suspension, as in example 1, is applied to the printing plate, where at a temperature of 80oIs the gelling of the binder.

Labels receive the second fluid, give bright, easily detectable luminescence. Labels with the same amount of phosphor, but not exposed to ultrasound, have a faint glow.

An important advantage of the invention is that antitoksicski the phosphor in this way can be used with any known binder and pigment, depending on the requirements of the consumer or product.

It is not recommended to use solvents with low viscosity.

Thus, when using the proposed method for improving the sustainability labels and reliability of their identification by the inclusion of a larger number of phosphor becomes possible due to the activation of the surface prior to application of the protective composition and the impact on the phosphor ultrasound in the solution of a polar liquid. In addition, the latter reduces the damage to the soft cushions flexo printing machines.

Use antistatisch phosphors flexo printing methods technologically feasible on existing equipment, does not require additional investment and provides reliable protection of printed products from fakes.

The principle of the paint using the rasterized roller and properties used in this technique, printing inks, allows you to get a new production technology are protected from printing products, with production rational and cheap way.

Proposed by the authors of the invention the method allows, using the technical possibilities flexographic printing, to include special inks insoluble solid pigments with different physico-chemical effects in quantities sufficient for reliable identification applied this method labels.

1. The method of applying to the surface of the protecting products against counterfeiting, comprising antitoksicski the phosphor and identification using infrared radiation, characterized in that the protecting composition is applied by typographical method on activated directly before application of the surface, thus protecting the composition includes antitoksicski the phosphor pre-exposed to ultrasound in the solution of a polar liquid.

2. The method according to p. 1, wherein the protecting structure put flexographic method.

3. The method according to p. 1, wherein the protecting structure includes 1.5 to 7 wt. % antistokovskogo phosphor.

4. The way istia ultrasound in the solution of a polar liquid.

 

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FIELD: protective devices, applicable in such protected documents as banknotes, passports, visas, property rights, licenses, registration papers, cheques, transfers of money, warrants, etc.

SUBSTANCE: the magnetic/metal protective device for use with an object, so as to provide a great number of protective tags has a bearing base of a certain width. The magnetic/metal protective tag has a metal layer that is positioned at least on a section of the bearing base for provision of metal protective tags. The metal layer forms a great number of conducting sections on the bearing base. These sections are separated from one another by non-conducting sections, which pass completely through the entire width of the bearing base together with the magnetic layer, which is positioned at least on a lesser sections at least of one of the mentioned great number combination with it for provision of magnetic protective tags. And at least a part on at least one of the conducting section has hollows, which form visually recognizable tags.

EFFECT: enhanced reliability of protection of documents against forgery.

4 cl, 14 dwg

FIELD: designs or pictures characterized by special or unusual light effects.

SUBSTANCE: safety paper has a layer characterized by variable optical properties, made semitransparent, with transparency from 20 to 80%, and provided with coloring agent composed of optically changeable pigments.

EFFECT: enhanced protection.

1 cl, 2 dwg

FIELD: production of decorative articles.

SUBSTANCE: method involves forming in computer memory three-dimensional model of decorative surface with alternating protrusions and slots and combining models into single three-dimensional model.

EFFECT: improved quality of article with decorative surface.

7 dwg

FIELD: printing arts and concerns the printed matter with an image concealed from visual observation.

SUBSTANCE: the printed matter has a medium with the main image applied onto it transferred by a regulated raster with a preset angle and lineature, and at least with one additional image concealed from visual observation transferred by a raster with a deformed structure with a possibility of identification of the concealed image at imposition of a reference template onto the printed product. The concealed image is made for visualization in half-tones or in a contour at imposition of a reference template representing a transparent base with a linear raster applied onto it, whose angle and lineature are identical to the preset ones.

EFFECT: enhanced degree of protection of the printed matter at a use of a sufficiently simple reference template.

14 cl, 8 dwg

FIELD: engineering of protection elements.

SUBSTANCE: protection element 2 of plastic laminate 1 with surface ornament 12 mosaic-composed of surface elements 13,14,15, while plastic laminate 1 has shaped layer 5 positioned between surface 4 and protective 6 layers. Light 11 falling on boundary surface 8 between shaped 5 and protective 6 layers, is reflected, while at boundary surface 8 structures 9 are formed of optical effect of surface elements 13,14,15. in surface ornament 12 at least one pair 14,15 of surfaces is positioned, formed by first 14 and second 15 surface elements. Each surface element 14,15 has diffraction structure {B(x,y,T)}, produced by superposition of grid structure {G(x,y)} onto profiled structure {R(x,y)}. In first surface el 14 vector 16 of grid structure {G(x,y)} and vector 17 of profiled structure {R(x,y)} are practically parallel to each other, and inside second surface element 15 vector 16 of similar grid structure {G(x,y)} and vector 17 of similar profiled structure {R(x,y)} enclose practically a right angle, vectors 16 of grid structures {G(x,y)} in both surface elements 14,15 are practically parallel. Spatial frequency fR of both relief structures {R(x,y)} is more than 2500 lines in one millimeter, while spatial frequency fR of profile is at least ten times greater than spatial frequency fG of both grid structures {G(x,y)}.

EFFECT: protection element is hard to copy and has bright surface drawing altering on rotation or inclination, authenticity of element is easily checked by simple means.

25 cl, 10 dwg, 2 ex

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