Laminated heat-welded multi-layered film and method of its making

FIELD: manufacturing multi-layered films.

SUBSTANCE: film comprises base made of bi-axially oriented polypropylene film and polyolefin film. Before laminating, the polyolefin film is colored. The multi-layered film is oriented in transverse direction or longitudinal direction and transverse direction after laminating. The thickness of the multi-layered film ranges from 8 μm to 26 μm. The method of producing the multi-layered film is also presented.

EFFECT: expanded functional capabilities.

9 cl, 3 ex

 

The present invention relates to multi-layer products in quality packaging material, in particular laminated termosvarivaemaya multilayer film and method of its receipt.

Becoming increasingly widespread production and sale of counterfeit goods is a serious problem. These counterfeit products are often packaged in almost indistinguishable from the original packaging in order to confuse a potential buyer, confident that he buys original products. This poses many problems. First, the manufacturer of the original product loses business. Secondly, the owner of the rights to the product fraudulently deprived of their intellectual property. However, more importantly, in many cases, it becomes apparent that a copy products is often of poor quality caused considerable damage to the reputation of the manufacturer. Low quality counterfeit products leads to possible claims, and in this case the manufacturer of the original, responsible for product quality, must prove that the damage is not related to his product. Based on the foregoing, it is desirable that the product is original have been such a designation by which it would be possible to recognize the original.

Various kinds of products, since the products of the power supply, tobacco, consumer products such as CD-ROMs and video tapes, and finishing spare parts for cars or airplanes, sell today in the package. Often the packaging is made from polyolefin film, paper, cardboard, or combinations of these materials. To confirm the original packaging using the wrapper as a carrier of the protective trait. Thus, in this case, the goods may not have the protective trait, but different products from the same manufacturer of branded goods can have a protective sign of a certain brand, typical for this manufacturer, without intervention in the production process of each individual product.

Known form of protection of the original is the use of so-called security labels. Printed on the packaging embossed hologram finds the same application, as printed on the tear-off strip protective sign. The latter is undesirable, because the currently used packaging machines are not always equipped with devices necessary for tear-off strips. Embossed holograms or security labels are applied or pasted with the help of different technological operations, which entails more time and, accordingly, the financial costs.

The closest analogue of the invention is laminated termosvarivajutsja the Xia multi-layer film, including as the primary film layer of biaxially oriented polypropylene film and at least one other polyolefin film and polyolefin film before lamination applied dye (see U.S. patent No. 4048736). Known multilayer film get the standard lamination of the individual layers, and the resulting film is not subjected to subsequent orientation.

A disadvantage of the known multilayer films is unreliable inclusion which is a protective sign of the dye in a multilayer film.

The present invention is to enable reliable protective trait in a multilayer film.

The problem is solved, we offer laminated it, multilayer film comprising as a main film layer of biaxially oriented polypropylene film and at least one other polyolefin film and polyolefin film before lamination applied the dye, due to the fact that after laminating multi-layer film was the orientation in the transverse direction or in the longitudinal and transverse directions, the thickness of the multilayer film is from 8 μm to 26 μm.

As biaxially oriented polypropylene film and polyolefin film may contain lubricants, antistatic the ski, and antibioticsa tools.

On the basis of the orientation of the multilayer film, it is possible to minimize the consumption of dye.

Lubricants are higher aliphatic amides of the acids, esters of higher aliphatic acids, waxes and metal Soaps, and polydimethylsiloxane. The effective amount of lubricant is from 0.01 to 3 wt.%, mainly from 0.02 to 1 wt.%. In particularly justified the addition of amides of aliphatic acids (from 0.01 to 0.25 wt.%). Particularly suitable amidon aliphatic acid amide is erucic acid.

Preferred antistatic tools are alkaline alkanesulfonyl modified by esterification, i.e. ethoxylated and/or propoxycarbonyl polydiorganosiloxane (polydiorganosiloxane, polyalkyleneglycols and their analogues) and/or substantially straight chain, saturated aliphatic tertiary amines with aliphatic residue containing from 10 to 20 carbon atoms, with ω-hydroxy-substituted alkyl groups with 1-4 carbon atoms, and N,N-bis-(2-hydroxyethyl)-alkylamine with 10-20 carbon atoms, mostly 12-18 carbon atoms in the alkyl residue is preferable. The effective amount of antistatic agent is from 0.05 to 0.5 wt.%. Suitable also glycerinate the rat, used in amount of from 0.03% to 0.5 wt.% as the antistatic agent.

Suitable antibiotiki means are inorganic additives such as silicon dioxide, calcium carbonate, magnesium silicate, aluminum silicate, calcium phosphate and the like, and/or particles reticulated polymers, such as mesh or polymethacrylates net polyalkyloxy, and/or organic polymerizate, such as polyamides, polyacrylates, polymethacrylates, polyesters, polycarbonates and the like, preferably used is silicon dioxide. The average particle size is from 1 to 10 μm, especially 2 and 5 microns.

An additional object of the invention is a method of obtaining a laminated termosvarivaemaya multilayer film, comprising applying a dye to a polyolefin film and lamination film, and applying colour to a polyolefin film is carried out before lamination, while the distinctive feature of the method lies in the fact that the lamination is carried out after the orientation of the polypropylene film in the longitudinal direction and the resulting laminated multilayer film is subjected to orientation in the transverse direction, or received after the lamination of the multilayer film is subjected to orientation in the longitudinal and transverse directions.

Glossy is polyolefin film with the main film, it is advisable to exercise at high pressure and elevated temperature.

The orientation of the multilayer film, it is advisable to stretch factor from 4/1 to 7/1 at a temperature of from 120°to 150°and its orientation in the transverse direction from 8/1 to 12/1 at a temperature of from 130°170°C. Subsequent heat setting is carried out mainly at a temperature exceeding the temperature at which conduct the transverse stretching of the film, 1-40°C. In the case of orientation of the multilayer film in the transverse direction polypropylene film subjected to orientation in the longitudinal direction in the above-mentioned conditions, when this orientation is carried out before laminating polypropylene film with at least one polyolefin film.

Applying colour to a polyolefin film, which is combined with a polypropylene film, can be accomplished in any manner, for example by printing or sputtering. Printing can be single-color or multicolor. As for the method of printing, every time attention is directed to the feature film, there is used the most suitable for this film way. The most commonly used printing, typical for packaging, such as offset, screen, flexography (aniline), UV flexography or gravure printing. The paint can be applied, or in a separate operation, or both immediately before laminating the polypropylene main film. Marked characteristic may be an arbitrary shape, and it can simultaneously serve as a designation Packed in the film product. This feature caused the characteristic may be marking the date of manufacture or place of manufacture of packaged goods. In order to improve the affinity of the surface of the polyolefin film with the printed ink may be necessary to pre-film processing method Corona (spraying). When the oxygen in the form of carbonyl, epoxy, ether, or alcohol groups remains on the film surface. Other methods of pre-treatment of polypropylene films include pre-treatment by flame, plasma or fluorine. Laminating polyolefin film with polypropylene core film can be performed, or only from polypropylene main film, or on both sides. In the latter case, polypropylene main film entered into between two polyolefin films, and at least one of the polyolefin film is a dye.

The advantage of the multilayer films according to the invention is that the dye is firmly connected between its layers. This means that this attribute cannot be destroyed without disturbing significantly the film and, accordingly, the packaging. As in the films, commercially available and is opechalennyj offset or frontal way, printing ink is easily dissolved with an organic solvent, for example acetone, it is possible by simple means to distinguish, whether the film according to the invention or fake. Additional lacquer coating of the printed film can also be removed with an organic solvent.

The thickness of the offer termosvarivaemaya multilayer film is less than 26 μm. Such thin films can be made only when the thickness of the at least one film comprising termosvarivaemaya multi-layer film, of less than 13 microns. However, to make termosvarivaemaya polyolefin film of such thickness is difficult, which greatly complicates the fake multilayer films according to the invention. In a preferred embodiment, the thickness of the multilayer films according to the invention is from 10 μm to 20 μm.

A multilayer film according to the invention can produce the most simple and economical way, if the laminating polyolefin film with polypropylene core film conduct or to orientation of the primary film, or between the longitudinal and transverse orientation of the main film. In both cases, the used polyolefin film is thicker by a factor f of the multilayer film according to the invention. For the case where the laminating polyolefin film is carried out before orientation polypro the new film, the factor f corresponds to the total stretching ratio of biaxially oriented polypropylene film.

In this case, first carry out the lamination, and then either sequential or simultaneous stretching the multilayer film material in the direction of movement of the machine and across the direction of movement of the machine. In the latter case, in the multilayer film according to the invention as polypropylene main film and laminated polyolefin film is oriented biaxially. The preferred case where polypropylene core film are oriented consistently and laminating polyolefin film take place between the longitudinal and transverse orientation of the polypropylene film. In this case, the factor f corresponds to the ratio of the transverse stretching biaxially oriented polypropylene film and in the film according to the invention polypropylene main film of biaxially oriented, laminated polyolefin film monoaxially, namely transversely to the direction of movement of the machine.

In a preferred embodiment, the laminating polyolefin film with the main film is carried out exclusively at high pressure and high temperature without additional adhesives. The advantage of this method is the fact, the film contains a small number of migratory and touch active substances, which is an important criterion for direct contact with food.

In another preferred form of execution of the melting point or softening point of the polyolefin film is lower than the melting point of biaxially oriented polypropylene film. The most preferred form of execution is that in which the polyolefin film is composed mainly of propylene-ethylene copolymers, propylene-butylene-ethylene terpolymers, propylene-butylene copolymers or mixtures thereof. Laminated polyolefin film can serve at the same time as the printed layer for the combined film.

The thickness of the laminated polyolefin film in the multilayer film according to the invention is preferably from 0.5 to 15 μm, most preferably from 0.5 to 5 microns.

In the most preferred embodiment it is in the case of spraying or printing the fluorescent dye ink absorbing ultraviolet light and emitting long-wavelength visible light, due to which when illuminated with UV lamp achieves a certain color effect. Light emission may occur either very quickly (short-term) after absorption, we are talking about the flu is recenzii, or it may persist for a longer period, in this case we are talking about the phosphorescence. The advantage of this form of execution is that the protective trait is not visible in normal light and aesthetics and the advertising effect of the package is not broken, while specialist simple technical AIDS may find the original packaging.

Protective trait can be modified depending on the product, Packed in foil according to the invention, in appearance and color. In this case, it is possible to ensure traceability, verification of products, for example in packaging include the date of manufacture, a boot room product or place of manufacture. This integrated sign can be either coded or clear to all.

The invention is illustrated by the following examples.

Example 1

The film thickness of 10 μm from 99% of the propylene-ethylene copolymer (4.5% of ethylene, MFI=5 g/10 min (230°/of 2.16 KP/cm2), density: 0,90 g/cm3), 0.3 wt.% N,N-bis-(2-hydroxyethyl)-(alkyl with 12 to 16 carbon atoms) amine, 0.6 wt.% polydimethylsiloxane density 0,985 g/cm3at 20°and a viscosity of 106MPa·and 0.1 wt.% silicon dioxide with an average particle size of 4 μm is printed by flexography. Printed film laminated with a film made of polypropylene density of 0.91 g/cm3 index melting point of about 3.0 g/10 min at 230° C/21,6 N at a temperature of 80°C. the lamination process is carried out after the stretching films of polypropylene in the longitudinal direction with a stretch factor 5/1 at a temperature of 140°C. the Obtained multilayer film is stretched transversely to the direction of movement of the machine with stretch factor 10/1 at a temperature of 160°C. the thickness of the entire film is then 16 μm. The thickness of the component film of the propylene-ethylene copolymer is 1 μm.

Example 2

The film thickness of 10 μm from 99% of the propylene-ethylene copolymer (4.5% of ethylene, MFI=5 g/10 min (230°/of 2.16 KP/cm2), density: 0,90 g/cm3), 0.3 wt.% N,N-bis-(2-hydroxyethyl)-(alkyl with 12 to 16 carbon atoms) amine, 0.6 wt.% polydimethylsiloxane density 0,985 g/cm3at 20°and a viscosity of 106MPa·and 0.1 wt.% silicon dioxide with an average particle size of 4 μm is sprayed with fluorescent in UV light and dissolved in ethyl acetate printed paint, while dissolved printing ink under the action of compressed air is sprayed in a thin layer. Deposited film laminated with a film made of polypropylene density of 0.91 g/cm3index melting point of about 3.0 g/10 min at 230°/A 21.6 N at a temperature of 80°C. the lamination process is carried out after the stretching films of polypropylene in the longitudinal direction with a ratio RA is tension 5/1 at a temperature of 140° C. the Obtained multilayer film is stretched transversely to the direction of movement of the machine with stretch factor 10/1 at a temperature of 160°C. the thickness of the entire film is then 16 μm. The thickness of the component film of the propylene-ethylene copolymer is 1 μm.

Example 3

The film thickness of 10 μm from 99% of the propylene-ethylene copolymer (4.5% of ethylene, MFI=5 g/10 min (230°/of 2.16 KP/cm2), density: 0,90 g/cm3), 0.3 wt.% N,N-bis-(2-hydroxyethyl)-(alkyl with 12 to 16 carbon atoms) amine, 0.6 wt.% polydimethylsiloxane density 0,985 g/cm3at 20°and a viscosity of 106MPa·and 0.1 wt.% silicon dioxide with an average particle size of 4 μm are printing way silkscreen method. Printed film laminated with a film made of polypropylene density of 0.91 g/cm3index melting point of about 3.0 g/10 min at 230°/A 21.6 N at a temperature of 80°C. After lamination film of polypropylene stretched simultaneously in the longitudinal direction with a stretch factor 5/1 and transverse to the direction of movement of the machine direction with a stretch factor 10/1 at a temperature of 160°C. the thickness of the entire film is then 16 μm. The thickness of the component film of the propylene-ethylene copolymer is 1 μm.

The film described in the above examples, have pressed the protective characteristic of RA is formed between the film layers and which it is not possible to delete or tamper with, without damaging the film. Because of this it can be distinguished from additionally marked with signs or symbols (or frontal offset printing), which removes the corresponding organic solvent. In example 2, this characteristic becomes visible only under ultraviolet light.

1. Laminated termosvarivaemaya multilayer film for packaging material comprising as the main film layer of biaxially oriented polypropylene film and at least one other polyolefin film and polyolefin film before lamination applied the dye, characterized in that after laminating multi-layer film was the orientation in the transverse direction or in the longitudinal and transverse directions, the thickness of the multilayer film is from 8 to 26 microns.

2. Multi-layer film according to claim 1, characterized in that its thickness is from 10 to 20 microns.

3. Multi-layer film according to claim 1, characterized in that the melting point or softening point of the polyolefin film is lower than the melting point of biaxially oriented polypropylene film.

4. Multi-layer film according to claim 1, characterized in that the polyolefin film mainly consists of copolymers of propylene and ethylene, ternary polymers of propylene, butylene and ethylene, copolymers of propylene is and butylene or mixtures thereof.

5. Multi-layer film according to claim 1, characterized in that the polyolefin film is termosvarivajutsja layer for multilayer films.

6. Multi-layer film according to claim 1, characterized in that the thickness of the polyolefin film in the multilayer film is from 0.5 to 15 μm.

7. Multi-layer film according to claim 1, characterized in that the dye is a fluorescent dye.

8. A method of obtaining a laminated termosvarivaemaya multilayer film according to one of claims 1 to 7, comprising applying a dye to a polyolefin film and lamination film, and applying colour to a polyolefin film is carried out before the lamination, wherein the lamination is carried out after the orientation of the polypropylene film in the longitudinal direction and the resulting laminated multilayer film is subjected to orientation in the transverse direction, or received after the lamination of the multilayer film is subjected to orientation in the longitudinal and transverse directions.

9. The method according to claim 8, characterized in that the laminating polyolefin film with the main film is carried out at elevated pressure and elevated temperature.



 

Same patents:

The invention relates to packages, in particular to the packaging of fluid masses

FIELD: protective system for checking authenticity of valuable documents.

SUBSTANCE: protective system in case of falling light can reconstruct a pattern outside the plane of carrier in holographic way, which pattern contains concealed information. System contains surface, at least partially transparent verification element, which in case of surface contact with protective element allows reading of information stored in it.

EFFECT: higher level of protection from forgery, increased reliability of authenticity check.

9 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

FIELD: production of a paper protected against a counterfeit.

SUBSTANCE: the invention is pertaining to manufacture of a paper protected against a counterfeit and used for manufacture of the important documents, such as banknotes, certificates and other analogous important documents, and which has at least one multilayer protective element capable to form at least one visually checkable optical effect. This protective element is at least partially is placed on the surface of the paper protected against a counterfeit and supplied at least with one integrated circuit. At that the protective element has at least one layer containing pigments with optically variable properties, first of all - interferential or liquid-crystal pigments. So the invention ensures production of a simple and inexpensive in manufacture important document, which allows to form an suitable to the visual control optical effect and simultaneously make it possible to conduct a machine check.

EFFECT: the ensures production of a simple and inexpensive in manufacture important document, formation of an suitable to the visual control optical effect and simultaneously permits a machine check.

73 cl, 10 dwg

FIELD: image printing technologies.

SUBSTANCE: required color is produced by mixing colors of image points, and on substrate fluorescent point of printing paints image are formed, which contain pigments fluorescent when excited by a certain electromagnetic emission, and also non-fluorescent image points of printing paints, containing colored pigments, non-fluorescent when excited by a certain electromagnetic emission. Aforementioned fluorescent image points and non-fluorescent image points are positioned on substrate in staggered order relatively to each other.

EFFECT: higher efficiency, higher quality.

2 cl, 4 ex

Protective element // 2255000

FIELD: production of optically diffraction protective elements.

SUBSTANCE: the invention is pertaining to production of optically diffraction protective element. The protective element with a sample formed out of the separated surfaces and having the form of a laminated structure used for notarization of authenticity of a document contains, at least, a transparent protective layer, a transparent varnished layer and an adhesive layer. The separated surfaces of the sample consist of the background surfaces and elements of the sample. At that in the field of the background surfaces the varnished layer is formed smooth and even and in the field of elements of the sample the relief structures with the definite optically effective depth "h" are formed in the varnished layer. The background surfaces for the light illuminating a laminated serve as the even reflecting planes and the relief structures are two-dimensional diffraction gratings, which are formed out of the bas gratings with the periods (dx;dy) and the periods (dx;dy) are smaller, than the given limiting wavelength (λ) in the shortwave part of the spectrum of the visible light so, that elements of the sample absorb and disperse the illuminating light. At that in each relief structure the ratio of the absorbed and the dispersed light is given and depends on the given optical effective depth (h) in the relief structure. Thus the invention ensures a high protection of an element against its reproduction by copiers.

EFFECT: the invention ensures a high protection of an element against its reproduction by copiers.

25 cl, 9 dwg

FIELD: polymeric industry.

SUBSTANCE: marker comprises substrate provided with organic polymeric surface, coating solidified by irradiation and applied on the organic polymeric surface, and coloring agent applied on the solidified coating. The substrate has light-reflecting layer. The coloring agent can not be removed by five-fold wiping the surface with petrol. The method comprises preparing the substrate and applying the coloring agent on the coating solidified by radiation. The substrate has light-reflecting layer.

EFFECT: prolonged service life.

28 cl, 6 dwg, 2 tbl

FIELD: important documents with protective attributes, combination of matters with two automatically controlled properties for protecting important documents against counterfeit, methods for making such documents and methods for testing authenticity of charred matters and ash.

SUBSTANCE: important document, mainly bank note or person certificate is characterized by use at least of two luminophors whose luminescent properties may be automatically and individually monitored. First luminophore irreversibly losses its luminescent properties at first temperature. Second luminophore irreversibly losses its luminescent properties at second temperature. First and (or) second temperature exceeds natural temperature of burning important document. It allows to identify document according to itself and also according to its ash and prevents possibility of illegal regeneration of materials designed for protecting against counterfeit in order to make duplicates of documents.

EFFECT: enhanced reliability of identifying important documents.

29 cl

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: 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

The invention relates to the production of securities, protected from tampering, for example, etching of printed or handwritten text, and can be used for production of documents, banknotes, etc

FIELD: printing industry.

SUBSTANCE: proposed storage medium with half-tone image in engraving style produced by method of intaglio printing, i.e. presented by irregular linear structures, consists of repeated printable structural elements. Fine structure present within the limits of structural elements in from of spaces are partially applied to structural elements.

EFFECT: provision of complex design, high protection from counterfeit.

36 cl, 16 dwg

FIELD: printing processes to produce particular kinds of printed work.

SUBSTANCE: different color paint is applied to printing plate rolled up with paint within limits of definite pattern of mask.

EFFECT: improved quality of printing.

6 cl, 1 dwg

FIELD: methods of producing data carriers.

SUBSTANCE: method can be used for making persona; identifications in form of cards, securities etc. Method of making info carrier (1,10) provided with protective element having optically variable properties. The element has at least one distinguish marking (5, 6, 11) and at least one light-permeable layer (4) with optically variable properties. Layer having optically variable properties is at least at several parts overlapped with marking. Light-permeable layer (4) with optically variable properties is applied onto data carrier and marking (5, 6, and 11) is made through the layer onto data carrier (7) formed by means of laser radiation. Layer (4) with optically transparent properties has material, which creates optical variable effect. Moreover, the layer stays invariable under influence of laser radiation. Method provides high protection against imitation.

EFFECT: simplification; reduced cost of production.

30 cl, 4 dwg

FIELD: data carriers.

SUBSTANCE: data carrier is provided with protective element, which allows at least visual control and has at least on a portion an engraving, which is a semi-tone blind engraving, produced by metallographic printing without ink feed, and also disclosed are method for making a data carrier and printing form for making protective element by means of blind engraving.

EFFECT: higher level of protection from forgery.

3 cl, 13 dwg

FIELD: image printing technologies.

SUBSTANCE: required color is produced by mixing colors of image points, and on substrate fluorescent point of printing paints image are formed, which contain pigments fluorescent when excited by a certain electromagnetic emission, and also non-fluorescent image points of printing paints, containing colored pigments, non-fluorescent when excited by a certain electromagnetic emission. Aforementioned fluorescent image points and non-fluorescent image points are positioned on substrate in staggered order relatively to each other.

EFFECT: higher efficiency, higher quality.

2 cl, 4 ex

FIELD: printing.

SUBSTANCE: method includes use of freely mounted relatively to shape cylinder rolling cylinder, for rolling portions of composite printing form of shape cylinder, rolling cylinders being made with possible forming of portions of stripes of multicolored paints on shape cylinder.

EFFECT: higher efficiency.

3 cl, 9 dwg

FIELD: data carriers.

SUBSTANCE: data carrier 14 with forgery-protecting imprint 1 made by metallographic printing method consists of several contrasting structural elements 2,3,4,5,7,22, positioned with precise alignment to each other, while one portion of these structural elements 3,4,5,7 is made relief-type and can be sensed by touch, and other portion of structural element 2, 22 is made flat and undetectable by touch.

EFFECT: exceptionally high level of protection.

4 cl, 9 dwg

FIELD: manufacture of securities.

SUBSTANCE: method involves providing protrusions of equal width at their base portion and of various cross section at apexes within the range of length of each protrusion.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

FIELD: manufacture of securities.

SUBSTANCE: method involves providing pattern comprising combination of ink layer protrusions and slots therebetween, with width of ink layer protrusions making at least 0.5 mm.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

FIELD: manufacture of securities.

SUBSTANCE: metallographic printing form has printing members disposed on working surface and made in the form of deepened strokes having cross section profile of asymmetric shape with various angles of inclination of side faces.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

Up!