Polymer sandwich element for paper, which has optically variable effect

FIELD: textile, paper.

SUBSTANCE: polymer sandwich element for paper, which has optically variable effect, is made in the form of a sandwich polymer structure containing at least one layer with microraster relief structure. It has an additional layer with printed or embossed raster of microimages, which is spatially combined with microraster relief structure. Microraster structure is made in the form of raster of spherical transparent polymer lenses or prisms or raster of Fresnel diffraction polymer structures. Printed microimages located in nodes of the printed raster consist of elements of different colours with diametre of 20-100 mcm, which are located at the distance of 40-400 mcm from each other. Mutual location of colourful elements in nodes of the printed raster is discernible in different places of a representational printed field. Inside the defined areas the mutual location of colourful elements differs from mutual location of elements outside the defined areas.

EFFECT: invention allows increasing protection degree of products with protective elements without any increase in prime cost of their production process.

3 cl, 4 dwg, 1 ex

 

The invention relates to the manufacture of paper with hidden items, such as guarding the hidden elements, i.e. identify or become apparent only when using special tests or methods or devices for intervention, i.e. to secure the paper.

In modern paper industry for secure printing are widely used thin-film transparent and reflective elements made in the form of polymer thin-film elements: protective threads, Windows, laminating films and flat polymer inclusions-applications. Such polymer can generate a different hard faked security features. One of the interesting and popular destinations is the formation of thin-film polymer protective elements transparent, translucent and reflective relief raster structures. Such patterns in combination with printed and embossed bitmaps create original hard simulated protective effects.

An example is the widely known protective hidden items for the paper "Motion™" company Crane & Co., Inc. (EN 2420411 C2, 10.06.2011), "HALS™" company GRAPAC Japan Co. Inc. (EP 2172340 A1, 07.04.2010), "MOVE™" company Gieseke &Devrient GmbH (EN 2395842 C2, 27.07.2010).

Closest to the proposed technical solution is a protective multi-layer El is UNT for paper with optically variable effect, made by technology "MOVE™"described in EN 2395842 C2, 27.07.2010. According to this technology, multilayer security element is formed on the surface of the paper or polymer carrier by printing offset or flexographic printing method raster color images in the form of equally spaced elements, such as spots or points. Items printed rasters can have a complex configuration, and the inner region may vary not only in color but also texture. Color images are placed in the nodes of a flat raster. Over the raster print images by methods of stamping, UV inkjet printing or any other method to form a spatial raster transparent polymer elements in the form of lenses or prisms. Spatial periods and the orientation of the raster image and the polymer elements are the same. Within certain areas, with the configuration of some characters, the spatial phase microlensing raster or raster images are resized to a quarter of the spatial period. In the background region of the phase shift of none, and inside the symbol phase shift raster equal to a quarter of the spatial period of the grating raster. This leads to the fact that when observing the surface of the protective element at small angles selected area will have different color hues than the s with the surrounding areas. The presence of such color contrast, which varies with the rotation of the protective element in its plane, and is a protective sign.

The disadvantages of the known protective trait can actually be attributed to discern the outline of the latent image when viewed protective element at a right angle, resulting in reduced security marking products with a protective element.

The technical result of the invention is to increase the degree of protection products with protective elements without increasing their cost of production.

The technical result is achieved in that the polymer multilayer element for paper, with optical variable effect, made in the form of a multilayer polymer structure comprising at least one layer with microreservoir relief structure and the additional layer with printed or embossed pattern microimages, spatially coincident with microreservoir relief structure, characterized by the fact that microbacteria relief structure made in the form of raster spherical transparent polymer lenses or prisms or raster Fresnel diffraction polymeric structures, printed micro, located at the sites of the printing raster, consist of elements of different colors with a diameter of 20-100 μm, spaced from each other at a distance 40-40 μm, moreover, the mutual arrangement of color elements in the nodes of the printed raster is different in different places of the fine print fields, namely within the selected areas of mutual arrangement of color elements is different from the relative position of the elements outside of the selected areas, resulting in the formation of the hidden image, indistinguishable when observing at right angles to the plane of the protective element and visible at acute angles.

In addition, selection may take the form of geometric shapes, or letters, or numbers, or symbols, and microbacteria relief structure may be made in the form of raster micrological with a spatial period coinciding with the spatial period of the raster image stamped on the carrier surface of the latter.

This is achieved in that the protective element is a multilayer polymer structure. It contains at least one layer with microreservoir relief structure and the additional layer with printed or embossed pattern microimages, spatially coincident with microreservoir relief structure according to the invention of the printing of micro, located at the sites of the printing raster, consist of elements of different colors with a diameter of 20 to 100 μm, spaced one from the other at a distance of 40-400 μm, moreover, the mutual arrangement of color elements in the nodes of the printed raster is different in different places of the fine print fields, namely within the selected areas of mutual arrangement of color elements is different from the relative position of the elements outside of the selected areas, resulting in the formation of the hidden image, indistinguishable when observing at right angles to the plane of the protective element and visible at acute angles.

Thus, in the invention proposed in selected areas to change the mutual position of the colored elements. The parameters of the relief raster remain unchanged over the entire surface of the protective element. In this case, when observing the surface of the protective element in the direction perpendicular to the plane of the element, the selected area becomes significantly less noticeable, but when observed at small angles of their color contrast is maintained. Moreover, it should be noted that the change in characteristics of elements of the printing raster is achieved easier than changing settings embossed polymer raster on the surface of the paper.

The selected area can be in the form of geometric shapes, or letters, or numbers, or symbols.

Microbacteria relief structure mainly made in the form of raster spherical presrcription lenses or prisms. Microbacteria relief structure may be made in the form of raster Fresnel diffraction polymeric structures. Instead of raster transparent polymer lenses you can use raster of embossed pits or bumps. The observed effect will be similar.

This invention can be used in the manufacture of banknotes, securities, passports, excise stamps, identification documentalist production of such protective elements is determined by the complexity of forming the printed and embossed rasters with periods of the order of 100 microns or less and their homogeneous over the entire surface of the protected object. Moreover, the printing of the printing raster, as a rule, special printing, simulated operation, and on the other hand, difficult for modelscom with no special equipment.

Figure 1 shows a photograph of the combined lens and the printing raster, made by technology "MOVE™" on advertising bills firm Giesecke & Devrient". Colored spots - micro printed image (1) is located under the microlenses (2) lenticular. Figure 2 shows the layout of the lens and the printed raster on advertising bills firm Giesecke & Devrient". Figure 3 and figure 4 shows the options for the layout of the lens and printed Rast is offering a protective element in accordance with the claimed invention.

Comparative example. In a known protective element firm Giesecke & Devrient" (figure 2) spatial periods and the orientation of the raster image 1 and polymer microlenses 2 are the same. In the background region 3 of the phase shift is not, and within the selected areas 4 spatial phase microlensing raster is changed to a quarter of the spatial period.

An example of a specific implementation of the protective element (Figure 3, Figure 4) in printing products can serve the documents on which surface printed Microbattery, whose nodes are colored elements 1 consisting of three dots in different colors. Over the raster print images generated raster transparent polymer elements in the form of lenses 2. On the surface of the document shows the background area 3 and area latent image 4. In selected areas, forming a latent image 4, the color elements in the nodes of the raster change the orientation or position relative to the nodes of the raster. Figure 3 in the inner areas of the latent images 4 color print elements raster 1 shifted to pollperiod relative to the nodes of this raster, and 4 color elements 1 change their orientation. In both cases, under the supervision of the proposed protective elements in the direction perpendicular to the plane of the elements, the hidden image will not vary, while observing the angle to the surface of the protective elements they will be visible. Color hidden rendered image will change when you change the direction of observation.

1. Polymeric multilayer element for paper with optically variable effect is made in the form of a multilayer polymer structure comprising at least one layer with microreservoir relief structure and the additional layer with printed or embossed pattern microimages, spatially coincident with microreservoir relief structure, wherein microbacteria relief structure made in the form of raster spherical transparent polymer lenses or prisms or raster Fresnel diffraction polymeric structures, printed micro, located at the sites of the printing raster, consist of elements of different colors with a diameter of 20-100 μm, spaced from each other at a distance of 40-400 μm, and mutual arrangement colored elements in the nodes of the printing raster is different in different places of the fine print fields, namely within the selected areas of mutual arrangement of color elements is different from the relative position of the elements outside of the selected areas, resulting in the formation of the hidden image, indistinguishable when observing at right angles to the plane of the protective element and visible at acute angles.

2. Polymer mogolo the element at p. 1, wherein the selected areas are in the form of geometric shapes, or letters, or numbers, or symbols.

3. Polymeric multilayer element according to any one of claims 1 or 2, characterized in that microbacteria relief structure made in the form of raster micrological with a spatial period coinciding with the spatial period of the raster image stamped on the carrier surface of the latter.



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: method of papermaking and the method of production of the protecting element are proposed. The protrusions or recesses in the form of a light watermark are formed on a paper, and these protrusions or recesses are sealed. On some parts of the paper surface, containing the recesses, a paint layer with a negative image is applied. The paint layer covers no more than 80% of the recesses surface. The protecting element is a composite image consisting of protrusions or recesses formed on the paper in the form of a light watermark, and a paint layer with a negative image applied on these protrusions or recesses, covering not more than 80% of the recesses surface.

EFFECT: elimination of difficulties connected with printing and processing of printed products, simplification of identification of the watermark while maintaining its protective properties.

5 cl, 5 dwg

FIELD: textiles, paper.

SUBSTANCE: method of manufacturing a sheet material comprising at least two superimposed fibrous layers, including the following steps: the first paper layer is produced, having at least one elongated zone of zero thickness, by means of filtering of the aqueous suspension of fibers on the grid of the first drum or farmer. And in the process of formation of the said layer, a transparent element is at least partially inserted into it. And the said at least partially transparent element is located at least in the said elongated zone of zero thickness, the second paper layer is produced on the grid of the second drum to form at least one recess in the said second layer, both layers are combined so that at least one recess of the second layer is placed in front of the said at least one elongated zone of zero thickness of the first layer comprising at least partially transparent element, with the formation of the window at this time, and the structure thus obtained is dried.

EFFECT: improvement of the method.

43 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of sheet material composed of, at least, two superimposed fibrous layers. Proposed method comprises the following steps. First paper layer is made with, at least, one elongated zero-thickness zone by filtering water suspension at first drum screen. Second paper layer is made at second drum screen to make, at least, one recess in second layer. At least, one transparent element is arranged between two still wet layers to bind both layers so that said recess of second layer, one said transparent element and said elongated zero-thickness zone of first layer are opposed. Made structure is dried.

EFFECT: sheet material with protective element without structure peeling.

43 cl, 6 dwg

Covered instrument // 2448840

FIELD: printing.

SUBSTANCE: invention relates to a covered instrument, in particular, to a banknote, bank card, identification card, certificate, passport, security or certificate. The document contains a translucent carrier substrate made of paper and/or plastic, and at least one protective element applied on the carrier substrate or embedded in the carrier substrate which when seen from at least one side of the covered instrument in transmitted light shows at least one first image and simulates the presence of at least one first watermark in the carrier substrate. At least in some areas the document has at least one layer simulating first watermark, giving it unexpected optical effects in comparison with protective elements with conventional water marks.

EFFECT: document is provided, which is especially hard-to-copy, having simulated effect of the watermark using the protective element.

38 cl, 8 dwg

FIELD: textile, paper.

SUBSTANCE: counterfeit-proof paper comprises a transparent, at least at some areas, film element, which is freely accessible, at least at some areas, via counterfeit-proof paper. The film element is connected to counterfeit-proof paper by means of an adhesive layer, which is highly transparent and clear in the region of freely accessible areas. The adhesive layer for at least one of freely accessible areas includes a groove, which substantially covers this area surface. The groove in the form of a freely accessible area has an adhesive layer, which is 1-2 mm less or 1-2 mm more than this area. The adhesive layer in the area of at least one of freely accessible areas, apart from the groove, has an ornamental area, on which the adhesive layer is applied in the form of ornaments, symbols or a code. Also a film elements is proposed, and a method to manufacture counterfeit-proof paper or a valuable documents (its version).

EFFECT: improved counterfeit protection of paper.

70 cl, 20 dwg

FIELD: physics.

SUBSTANCE: protected document comprises structural layer and first and second diffraction relief structures. Note here that said relief structures, if seen parallel with structural layer plane, stay at different levels of protection element. Note also that first relief structure borders first reflecting layer, while second relief structure borders second partially reflecting layer. Besides, if spectator faces first reflecting layer, second data generated by second relief structure is partially hidden, while, if spectator faces second reflecting layer, partially hidden is first data generated by first relief structure.

EFFECT: higher degree of protection.

15 cl, 26 dwg

FIELD: textile, paper.

SUBSTANCE: structure is intended for secured and/or valuable documents. It contains at least one substrate of fibre material, optionally, at least one surface layer applied onto one surface of substrate. At the same time the specified surface layer comprises coating or surface pigments and at least one binder. It also contains multiple various elements of substrate and/or optionally of a surface layer, distributed in a random manner inside the substrate and/or optionally the surface layer, and at least one portion of authenticating and/or identifying information is related to at least one spatial and/or physical criterion of at least part of specified various elements. Also a document, a packing facility and a sheet material are proposed with application of the above-specified structure. A method to make such a structure, its versions and a method to authenticate and/or identify the structure are also proposed.

EFFECT: improved extent of protection.

31 cl, 12 dwg

FIELD: textile, paper.

SUBSTANCE: paper with counterfeit protection is used in production of securities and documents. Method to make paper with locally arranged protective elements includes formation of the first paper cloth on the first meshy cylinder. Deposition of water dispersion containing protective elements via nozzles at certain sections of moist paper cloth. Formation of the second paper cloth at the second meshy cylinder. Joining first paper cloth with deposited protective elements with the second paper cloth, and also pressing and drying. Water dispersion of protective elements contains at least one water-soluble polymer in amount of 0.1-3.0 wt %. At the same time dispersion of protective elements is supplied with controlled speed via nozzles, every of which is equipped with pump of auger type.

EFFECT: increased quality of paper due to reduction of pulsations of flow dispersion and increased stability of protective elements deposition process in strictly required amount at certain sections of paper cloth.

8 cl, 1 dwg, 1 tbl

FIELD: printing industry.

SUBSTANCE: counterfeit-proof document relates to data media. It contains graphical ornament for visual reproduction of data on a person and/or item. Ornament includes at least one image and/or text data, and with the help of specified printing logic it is applied onto secured document so that it has electromagnet characteristic specified by printing logic and read by means of logical circuit contained in secured document. Electromagnetic characteristic of electroconductive ornament is inductance, capacitance or frequency characteristic. Graphical ornament is applied onto secured document in the form of linear raster. At the same time lines of linear raster are joined to each other in the form of meander or are arranged in parallel. Version of counterfeit-proof document is the document with graphical ornament applied by electroconductive invisible paint transparent for human eye onto counterfeit-proof document. Other characteristics of this document are identical to characteristics of the first version document specified above.

EFFECT: enhanced protection against document forgery.

10 cl, 7 dwg

FIELD: paper industry.

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EFFECT: specified compounds applied by suggested method do not darken optically variable effects generated by non-porous film structures on the basis of microlenses, which may be used on or inside these protected documents, and thin layers of fibres applied and this introduced into parts of protective devices in protected documents containing windows with dirt and/or moisture resistant properties according to the present invention, demonstrate improved durability.

22 cl, 1 ex

FIELD: physics.

SUBSTANCE: data medium has a base in which a see-through portion is formed by line grid consisting of a plurality of parallel cutting lines. Inside the see-through portion, there is a motif region which is in form of a pattern, characters or code which looks different when viewed in reflected and/or incident light.

EFFECT: solution improves protection of a document from forgery.

31 cl, 15 dwg

FIELD: printing.

SUBSTANCE: invention relates to special types of printing enabling to create in the body of the sheet material the original image protecting it against forgery. The method of creation on the sheet material of the iridescent image consists in the impact on the image applied on the sheet material with the light flux reflected from the diffraction grating at different angles of its rotation. In the body of the sheet material the image of isolated points in the form of volumetric extended metal-dielectric nanostructures with quantum size effects is created and placed it between the metal layer and the reflective diffraction grating. At that over each point of the image in the metal layer an opening is made through which the light flux is directed to the diffraction grating.

EFFECT: proposed invention provides a bright image providing protection of the sheet material against forgery.

9 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention can be used in exhibition systems for advertisement producers, and can be used to make personal information cards, badges, shields etc. The personal identification apparatus includes an identification element and means of attracting the attention of observers. The identification element contains personal information and is illuminated by a multi-layer light pane. The light panel consists of a layer of a polymer substrate, a layer of current-conducting optically transparent material which is a first electrode, an emitting layer which converts electrical energy to light, a protective layer, a current-conducting layer made from opaque material which is a second electrode, a sealing layer, as well as electric power sources and means of communicating with said sources.

EFFECT: invention increases efficiency of the process of personal identification and activation of specific perception of an object.

3 cl, 5 dwg, 2 ex

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.

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EFFECT: enhanced degree of protecting valuable papers.

3 cl, 4 dwg

The invention relates to a protective drawings for securities, to the printing of this pattern and securities with a protective figure

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: electricity.

SUBSTANCE: invention can be used in exhibition systems for advertisement producers, and can be used to make personal information cards, badges, shields etc. The personal identification apparatus includes an identification element and means of attracting the attention of observers. The identification element contains personal information and is illuminated by a multi-layer light pane. The light panel consists of a layer of a polymer substrate, a layer of current-conducting optically transparent material which is a first electrode, an emitting layer which converts electrical energy to light, a protective layer, a current-conducting layer made from opaque material which is a second electrode, a sealing layer, as well as electric power sources and means of communicating with said sources.

EFFECT: invention increases efficiency of the process of personal identification and activation of specific perception of an object.

3 cl, 5 dwg, 2 ex

FIELD: printing.

SUBSTANCE: invention relates to special types of printing enabling to create in the body of the sheet material the original image protecting it against forgery. The method of creation on the sheet material of the iridescent image consists in the impact on the image applied on the sheet material with the light flux reflected from the diffraction grating at different angles of its rotation. In the body of the sheet material the image of isolated points in the form of volumetric extended metal-dielectric nanostructures with quantum size effects is created and placed it between the metal layer and the reflective diffraction grating. At that over each point of the image in the metal layer an opening is made through which the light flux is directed to the diffraction grating.

EFFECT: proposed invention provides a bright image providing protection of the sheet material against forgery.

9 cl, 5 dwg

FIELD: physics.

SUBSTANCE: data medium has a base in which a see-through portion is formed by line grid consisting of a plurality of parallel cutting lines. Inside the see-through portion, there is a motif region which is in form of a pattern, characters or code which looks different when viewed in reflected and/or incident light.

EFFECT: solution improves protection of a document from forgery.

31 cl, 15 dwg

FIELD: textile, paper.

SUBSTANCE: polymer sandwich element for paper, which has optically variable effect, is made in the form of a sandwich polymer structure containing at least one layer with microraster relief structure. It has an additional layer with printed or embossed raster of microimages, which is spatially combined with microraster relief structure. Microraster structure is made in the form of raster of spherical transparent polymer lenses or prisms or raster of Fresnel diffraction polymer structures. Printed microimages located in nodes of the printed raster consist of elements of different colours with diametre of 20-100 mcm, which are located at the distance of 40-400 mcm from each other. Mutual location of colourful elements in nodes of the printed raster is discernible in different places of a representational printed field. Inside the defined areas the mutual location of colourful elements differs from mutual location of elements outside the defined areas.

EFFECT: invention allows increasing protection degree of products with protective elements without any increase in prime cost of their production process.

3 cl, 4 dwg, 1 ex

FIELD: printing.

SUBSTANCE: invention relates to the field of manufacturing security documents. The protected structure (1) comprises: a fibrous layer (2a, 2b); substrate (3) with a translucent area; a watermark or its imitation (8a, 8b) applied on the fibrous layer (2a, 2b) and overlapped in the plan at least partially with the translucent area of the substrate, so that in this area the watermark or its imitation (8a, 8b) is visible against the light through the protected structure (1) only from the side of the fibrous layer; and the microelectronic device (4, 10) providing a contact or remote communication.

EFFECT: protection against counterfeiting and erasures.

44 cl, 22 dwg

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