Method of papermaking with multi-tone watermark, paper with multi-tone watermark, printing product with multi-tone watermark |
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IPC classes for russian patent Method of papermaking with multi-tone watermark, paper with multi-tone watermark, printing product with multi-tone watermark (RU 2502841):
        
 Method of making protective element with bilateral coat / 2502606
Invention relates to making of protective element having substrate with at least one opening covered on one side by translucent film. Said film is applied over solid translucent coat on the substrate top and bottom sides. Note here that coat forming material is applied in large amount in zone of said opening or said opening is filled with filler completely prior to coat application.
 Covered document / 2439235
Covered document contains a substrate, visible authenticating element, as well as a control area which boundaries are at least partially defined by the authenticating element, and the authenticating element, at least partially restricts the contour of the control area and/or is used for positioning the control area. The control area has many identifying elements that differ from the specified authenticating element, and the control area carries the identifying information displaying at least one feature of identifying elements, in particular spatial or physical feature. Identification information is associated with the feature of the control area, in particular spatial and/or physical feature, at that the said information relates to one spatial and/or physical feature of identifying elements. Identifying elements are randomly dispersed within the control area and/or made for emission of a particular signal at the external, in particular optoelectronic, electromagnetic, electrical, magnetic, thermal or acoustic influence.
 Method of producing fibrous layer containing element of assigned thickness, forming fabric for its manufacture, method of manufacture of such fabric and protective sheet with such layer / 2439234
Method of wet manufacturing a fibrous layer on a forming fabric of a paper machine, having a pile of fabrics. Wherein the said pile of fabrics includes superimposed front fabric and at least one subfabric, and the fibrous layer contains at least one element of an assigned thickness. At that the method includes a stage of forming the said layer by pulp dewatering on the forming fabric, which pile of fabrics has an area of low dehydration, compared to the first subfabric, at a level of at least one subfabric and/or under the front fabric. And the area of low dehydration meets the location of the said element. The group of inventions also relates to a forming fabric, to a method for its manufacture, to a protective sheet obtained in the above manner, and to covered document obtained from the protected sheet.
 Small-sized protective element with through hole and sheet with such elements / 2437974
Invention relates to a flat protective element of comparatively small size, for instance, to a pad, and also to a material that contains such elements, to secured documents made from such material, and to the method of manufacturing of these elements. The specified protective element comprises at least one through hole.
 Counterfeit-proof paper / 2428536
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).
 Structure for secured and/or valuable documents, document, packing facility, sheet material, method of structure making (its versions) and method to authenticate and/or identify such structure / 2421561
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.
 Sheet material with window, method of its manufacturing and protected document with such material / 2418126
Sheet material, a protective sheet and a protected document include at least two layers applied one onto the other. Besides, the first layer contains at least one lengthy section of zero thickness, and the second layer contains at least one groove, at the same time the specified at least one groove in the second layer is arranged opposite to the specified at least one section of zero thickness of the first layer, thus forming a window. Methods relate to manufacturing of sheet material and making a protected sheet. Method to make a sheet material includes the following stages. Making the first layer of paper specified above by filtration of cellulose fibre suspension on the metal cloth of the first cylindrical shape or a forming device. Making the second layer of paper on the metal cloth of the second cylindrical shape with formation of at least one groove in the second layer. Then two layers are combined and dried. Method to make a protective sheet repeats the above-specified method with inclusion of the stage, where at least partially transparent element is fixed in the longitudinal section of zero thickness of the first layer of the sheet material.
 Paper with high extent of counterfeit protection and method of its manufacturing / 2409473
Paper contains one or more elements of counterfeit protection, included into specific areas on or inside paper. Polymer item is arranged in the form of polymer film, strips of polymer film included onto/cast onto/coating polymer film. Polymer strips/threads are woven or combined to each other into a package by textile method. Method includes working operation of placing polymer item, comprising counterfeit protection element (elements) onto paper pulp cloth in process of paper manufacturing. Method includes integration of one or more following working operations in process of paper manufacturing: a) application in such a manner that one or more specified polymer items stick to layer of moist cloth of paper pulp after specified layer is formed in process of paper making; b) application in such a manner so that at least one layer made of one or more specified polymer items sticks to previously moulded layer of moist cloth of paper pulp after specified layer of moist cloth of paper pulp is formed in process of specified paper making.
 Counterfeit-proof document / 2407650
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.
Protected document with dirt and/or moisture resistance / 2401353
Method is intended to impart dirt and/or moisture resistance to porous substrate for protected documents, and also relates to dirt and/or moisture resistant protected document. Method includes application of dirt and/or moisture resistant compound onto opposite surfaces of porous substrate having porosity of approximately 20-100 millilitres per minutes and its impression into pores of substrate. At the same time compound penetrates and spreads at least in part of substrate thickness, then excess compound is removed from opposite surfaces of substrate. Coating press is used to impress dirt and/or moisture resistant compound into pores of substrate.
 Security paper, and method of its manufacturing and fraud resistant document obtained using above mentioned paper / 2494185
Recessed elements are inserted into paper, which provide safety and prevent forgery of the document. The paper comprises a security thread or strip as a windowed thread and a watermark obtained using electrotype in the areas of the greatest accumulation of the fibers intended to cover the said windowed thread. The windowed thread or strip is visible in some areas and is hidden in the other intermediate areas. The areas where the windowed thread or strip is hidden are dark areas in which near the security thread or strip the watermarks are placed obtained using electrotype.
 Seam for fabric for paper production and industrial fabric and method of its manufacture / 2482233
In the fabric a material is placed that absorbs laser energy and which is applied on the fabric in a controlled manner. The laser source is focused in some areas of this fabric, and partial melting and permanent welding of the fabric is carried out.
 Structuring grid for production of fine paper web and method of its manufacture / 2471908
Grid for structuring wet fibrous web (1') in the press section of the paper machine for manufacturing fine paper web has a three-dimensional woven structure that forms protrusions (62) and depressions (63), and the protrusions, as well as the depressions, are distributed with the repetition for relief formation of polygonal geometrically similar smallest unit surfaces (64). Each unit surface has an area a and covers several depressions with an average depth d. The area a and the average depth d of each unit surface (64) are designed in such a way in relation to each other that their ratio calculated in millimetres is at least equal to 30 mm, and a is taken in the range of 1.0-3.0 mm2, and d is taken in the range of 0.03-0.09 mm. The invention also relates to a method of manufacturing a fine embossed paper web using the said structuring grid. According to the invention the structuring grid structure can be used as a control parameter and the means of achieving a high dryness during pressing.
 Industrial fabric with thermochromic indicator / 2471905
Industrial fabric is an endless tape, taken from the group that comprises forming fabric, pressing fabric, drying fabric, technologic tapes used in the manufacture of paper, or fabric for embossment or chiseled fabrics, fabrics used in technology of through hot air drying, fabric for nonwoven materials or fabric used for finishing of woven fabric. Industrial fabric comprises fibers, threads or film containing thermochromic material as a means of technological process control. And in the industrial fabric these threads or fibers are embedded in the pattern. The said thermochromic material contains or is thermochromic polymers that have different temperatures of the thermochromic transition. For formation of the said industrial fabric its composition comprises the said thermochromic material.
 Multilayer textile creping fabric / 2466234
Multilayer textile creping fabric containing warp and weft threads. Multilayer textile creping fabric has a machine side or the side that is in contact with the shaft, and a side that is in contact with the paper web. Weft threads on the machine side of the fabric are provided with grooves and/or have a diameter that is smaller than the diameter of the warp threads.
 Omni-measured across width fabric obtained by flat weaving and made with ability of stitching when placed / 2466233
Fabric is made with the ability of stitching when placed and comprises a base obtained by flat weaving. The said base comprises at least one set of interwoven threads oriented in the machine direction and in the direction across the movement of fabric in the machine. The claimed fabric has three sections. The first section is woven with use of the first scheme of weaving and/or the first density of location, the first size and/or the first type of threads oriented in the direction across the movement of fabric in the machine. Behind the first section the first isolation region of a given length is formed in the machine direction by weaving transition or special weft threads without use of threads oriented across the movement of fabric in the machine. The second section is woven using the second scheme of weaving and/or second density of location, the second size and/or the second type of threads oriented in the direction across the movement of fabric in the machine. Behind the second section the second isolation region of a given length is formed in the machine direction by weaving transition or special weft threads without use of threads oriented across the movement of fabric in the machine. The third section is woven with use of the first scheme of weaving and/or the first density of location, the first size and/or the first type of threads oriented in the direction across the movement of fabric in the machine. The first and third sections of the base are turned inward, so that the free ends of these sections are adjacent to each other.
 Method of manufacturing industrial fabrics and fabrics for papermaking machine / 2466232
Method of processing fiber/filament or monofilament containing in fabrics for papermaking machine, industrial and technical fabrics, is claimed. The method comprises: (a) placement of material absorbing energy of short-wave infrared radiation in localised areas of fiber/filament or monofilament, which under normal conditions is permeable for energy of short-wave infrared radiation, and (b) selective fusion, melting or bonding by bonding agent the fiber/filament or monofilament with itself or with another fiber or other filament or monofilament by action on it by energy of short-wave infrared radiation. The method also includes formation of a "mushroom cap" on the tail of fiber/filament or monofilament, as well as generation of surface patterns.
 Preliminary assembling for use when manufacture of industrial fabrics / 2462546
First strip of tissue is knitted, which has two lateral edges and which length is equal to the length of the industrial fabric, and the width is less than the width of the industrial fabric. The first strip of tissue is formed as an endless loop by binding the seam oriented transverse the displacement of tissue in the machine, and thus the connection of the said two transverse edges. Then the first strip of tissue in the form of an endless loop is installed on two parallel rollers mounted rotatably, so that it covers them. Then the second strip of tissue is knitted and knitting of the second strip of tissue is carried out along the first edge of the first strip of fabric as its continuation, and the second strip of tissue in the form of an endless loop is continuously knitted.
 Method and device for production of helical screen filter / 2459028
Spirals are made by, at least, one coiler above work surface and, after thermal treatment, clamping device is displaced to lay coils nearby guide plate of work surface. Next spirals are laid by displacing laying coiler and clamping device between guide plate and previously laid spirals. Note here that, at least one previously laid spiral is displaced on work surface on displacing clamping device perpendicular therewith by amount of overlap. Spirals laid last are jointed together by, at least, one extra wire.
 Drying cloth with triangular weft threads used in technology of through drying with heated air / 2454495
Cloth for use in a paper-making machine contains warp threads interweaved with weft threads in order to form pockets on the cloth side in contact with the paper sheet. Weft threads are of substantially triangular cross section and are aligned so that their flat surface faces the machine side of the cloth. At the same time the areas, where warp threads are interweaved with weft threads, provide for increased depth of the pocket in the cloth and its volume.
 Sheet containing water mark or sign pseudo-water mark visible only on one side of sheet / 2485238
Sheet comprises a surface of the front side and the surface of the back side and at least one water mark or pseudo-water mark. And at least a part of the said water mark or pseudo-water mark is visible in transmitted light only on one side of the said sheet.
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FIELD: textiles, paper. SUBSTANCE: method of papermaking with multi-tone watermark lies in the use for casting and moulding of the paper web on a papermaking machine of the relief mask representing a partially water-permeable moulding element. The element is formed on the surface of the cylinder forming fabric, or on the dandy roll of the fourdrinier former. The mask has a variable height of the image area of the watermark, created by the relief stamping of the fabric, with electrotype and/or conjoint stamping of the fabric and electrotype and/or use of several layers of the electrotype. Individual, successive layers of electrotype in the mask can have openings which are different in the diameter and the density of location. The mask is assembled out of several layers of perforated plates of metal or plastic plates or composite materials. The paper and printing product made by the above method is claimed, which are protected against forgery. EFFECT: expansion of technological capabilities of the method of production in the paper of the watermark with the increase in the capacity of the watermark as an element of protection against forgery. 7 cl, 10 dwg
The technical field The invention relates to the production of paper, laminated paper, protected from tampering, banknote, passport, identification documents, securities, paper used for the manufacture of other, protected from counterfeiting, printing items: receipts, certificates, tickets for transportation, cultural or sports events. Paper according to this invention can be produced in a known manner on the cylinder or ploskokatanoj paper machine from aqueous suspensions by dewatering of paper pulp on a grid cylinder or flat grid (Foudriner) with subsequent removal of water from the paper web by pressing and drying, surface treatment or impregnation, and trim, to give the required performance characteristics. Prior art The watermark is generated in the paper production process during formation of the paper web at the wet end of the papermaking machine, remains an important element in the protection paper from a fake and an element of protection against forgery printed printed products. Typically, the watermark is obtained in the molding process of the paper web at the wet end of the papermaking machine. This watermark has a high level of protective properties unlike watermarking, we get t what snanam paper or printing method on it. Its distinctive feature is that in the reflected light of the elements of the sign, visible in the light as the dark, are light on the background paper and the elements, the light in the light - dark in reflected light. Thus in the manufacture of paper on a cylinder paper machine is used tide stamped on the net, in which pre-stamped three-dimensional image of the watermark, and the production of paper on ploskokatanoj machine applies the method of embossing a wet paper web by levelling (Algotherm), on a grid-cylindrical surface of which the image watermark ustanavlivaetsya. In this and in the other case, in addition to stamping the grid to obtain the form, reproducing the watermark image can be used filigree, representing novodarnitskaya elements watermark or a watermark, which is fixed on the grid. Created the so-called mask - elements creating a watermark image in the casting and molding of paper in the process of its production on paper machine. Filigree can be made of metal, plastic plates or can be made from polymer resins, which fill the sections forming the grid. Filigree allows to obtain bright watermark, which is characterized by the contrast with respect to bwamu field paper. Physically, the process of obtaining filigree watermark is significantly less deposition of fibers on the forming wire cylinder machine in the location of the watermark due to the lack of this place filtering. When you use the watermark on agothere ploskokatanoj paper machine the paper web waterproof packs together with lots of filigree with obtaining light watermark. By stamping the grid cylinder paper machine are the so-called half-tone portrait watermarks, which can be achieved by a wide range of transitions optical densities of the image from dark to light. This stamped watermark differs from the watermark obtained on ploskokatanoj paper machine using levelling. In addition, the latest the watermark is different from the watermark obtained from the grid cylinder, the shape of the watermark obtained by stamping it on the forming wire, the less accurate lines, as well as lower quality of small details. Attempts are being made to increase the protective properties of the watermark, to make it more difficult forgery and imitation. Known application ArjoWiggins Security US 6991846, which States paper with a watermark, similar to halftone obtained by using vodonepronitsaema what's filigrees, which has openings or through-dashed line. In otwartej or through dashed lines during low tide, the paper web is filtered suspension of paper pulp and the deposition of components of paper pulp. On vodonepronicaemyj solid areas filigree fibers are deposited to a lesser extent. As a result, at low tide paper form local areas with less, relative to the General field of paper, thickness or density plots and plots with equal field of paper thickness and optical density. Depending on the frequency and diameter of the holes in the filigrees changes the optical density of the image watermark. The more holes per unit area of the watermark and the larger the diameter, the darker these areas when considering the clearance on the background of bright areas, educated filigrane areas. Under this proposal received the watermark has the usual protective properties halftone watermark. On the water sign on to this invention, the light areas contrast with the field of paper around them and creates a macroscopic visual effect playback halftone gradations conventional halftone watermark, although actually get the range of optical density from dark to light less than in portrait water mark. In the avca EN 2407648 as elements get a watermark in the process of manufacture of paper at the wet end of the papermaking machine used masks in the form of a perforated screened filigree elements, fixed on a grid-cylinder paper machine. According to this production method, the watermark is possibility of obtaining contrasting light watermark on the General background paper with a high quality of development of small picture elements. While the optical density of the dark elements is limited to the total density of the background paper. Thus, the protective properties of the watermark on the optical properties are characterized by the following: the range of optical densities when viewed image watermark to the lumen; - contrast and bright image elements; - resolution reproduction of fine image elements (both dark and light). Watermarks obtained layered stamping forming fabric (portrait watermarks), do not provide a line image clarity is comparable with lines poluchaemymi waterproof elements filigree watermarks. Filigree watermarks, with higher clearness of lines in comparison with halftone watermarks, in turn, may have limited the area, when reaching a certain size waterproof square cause holes in paper cloth due to the breakdown forming on their surface. <> The inventionThe technical result of the present invention is to expand the technological capabilities of the receiving process in the paper watermark increasing the capacity of the watermark as an element of protection against forgery. The technical result is achieved by a method for the production of paper with multi-tone watermark includes the use for low tide and forming the paper web on the paper machine relief mask, which is partially permeable forming element formed on the surface of the forming fabric cylinder or eggthere ploskokatanoj paper machine, and is characterized by the fact that the mask has a variable height along the square image watermark created relief stamping grid, filigrees and/or joint punching mesh and filigrees, and/or by using multiple layers, filigrees, while separate, consecutive layers filigrees in the mask may have holes, different diameter and density. Optionally, the method characterized by the fact that the mask is assembled from several layers of perforated plates of metal or mask is assembled from multiple layers of polymer plates or composite materials, the formation of the mask is used to fill the resin (glue is), the mask is combined of several layers of perforated plates made of metal, polymers and composites. The technical result is ensured by the use of the claimed paper, protected from imitations manufactured by the above method. The technical result is ensured by the printing product is protected against forgery, made on paper, described above. The proposed method for obtaining the watermark is based on the combination of the advantages of stamped filigree water marks, and in their development. In this application, the conditions for the increase of the optical density range of the watermark when it is viewed in transmitted light. This is achieved by giving the multilevel character of the area forming the grid, creating a watermark generated by the combined effect of several technical resini: - fixing on the forming wire by welding, solder or bonding waterproof elements (filigrees), which are perforated with holes of different diameters and with different density, with filigree mounted on the grid in several layers; - the entire surface of the perforated filigrees or part of their surface exposed to the layered stamping; layers filigrees have holes, the diameter of which is s increases sequentially from the upper layer to the next, the lower layers; - layered stamping forming the grid. In addition, the proposal is implemented, the possibility of increasing the resolution of the watermark, which is achieved due to the fact that the filigree elements can be significantly less detail than the details obtained by the stamping grid. The minimum resolution of the image to gray-scale water mark obtained by stamping (0.5 to 0.6) mm, filigree, she is 0.2 mm In the analysis of the prior art are not identified technical solutions with a set of features of the present invention described above and provides the result. The analysis of the prior art demonstrates compliance with the proposed technical solution criteria invention of "novelty", "inventive step". The present invention can be industrially realized by using known manufacturing processes, equipment and materials used in the manufacture of paper on a cylinder paper machines, in which the mask watermark is created on the forming cylinder, and plastocyanin paper machines, where the mask watermark is created on the grid agrotera. The implementation of the invention Key mo is entom in the proposed method of production of paper is a special mask, formed on the forming wire (cylinder paper machine or the grid levelling (plasmacytoma paper machine), which during low tide and forming the paper web creates the watermark image. The structure of the mask is illustrated by figures 1 and 2, which shows the variations made in accordance with the process of the present invention. The figure 1 shows the structure of a mask for forming a multi-tone watermark. The figure 2 shows a variant of the structure of the mask. Position: 1 - the lowest altitude mask, the largest square hole (dark element on the paper); 2 - the maximum height of the mask, the smallest area of the holes (light element on paper); 3 - the maximum height of the mask, the absence of holes (contrasting light element on the paper - filigree watermark); 4 - no mask (background paper); 5 - forming a grid; a 6 - layered mask; 7 - mask with multilevel stamping filigree; 8 mask with multi-level joint filigree stamping and forming of the grid. Layers of masks, the number of which is determined by the specific conditions of production of paper and can reach 4-5 (mostly 3). For the manufacture of masks can be used with a wide range of materials: metal, polymer or composite materials, it is possible to fill the polymer is diversified varnishes, adhesives). The figure 3 shows the three-layer mask on the figure 4 - the watermark is obtained on the paper. In figure 3 the positions indicated: 9, the first layer: the lowest elevation mask, the largest square hole (dark element on paper); 10 - second layer: intermediate tone; 11 - the third layer; the greatest height of the mask, the smallest area of the holes (light element on paper); 12 - forming mesh. The figure 5 shows the mask with multilevel stamping filigree in figure 6 - watermark obtained on the paper. 13 - no mask (dark element on paper); 14 - the lowest altitude mask, the largest square hole (dark element on paper); 15 - the greatest height of the mask, the smallest area of the holes (light element on paper); 16 - forming mesh. Figure 7 shows images of two-layer mask on a larger scale (position 17), figure 8 - watermark obtained on paper (image). In figures 9 and 10 show the same as in figures 7 and 8, respectively, but in 1:1 scale. Obtained by the proposed method, the paper has a watermark which is very complex to achieve high artistic expression, which enhances its role as an element of protection against forgery. Received on this application paper contains a watermark that has complex features: - who is very useful for playback in the image of a large range of optical densities from the dark, produced by stamping forming fabric to light received on the highest surface of the mask; - play large and brighter than the total field of paper, image elements; - higher resolution, which allows to reproduce the elements of the image size of up to 0.2 mm; the crispness of the lines of the image. The technological process of manufacturing of the present invention industrially tested. Paper made on this application may be used for the manufacture of banknotes, passports and other documents of identification, securities, cheques, certificates, tickets for transportation, cultural and mass events. 1. Method for the production of paper with multi-tone watermark, which has been in use for low tide and forming the paper web on the paper machine relief mask, which is partially permeable forming element formed on the surface of the forming fabric cylinder or eggthere ploskokatanoj paper machine, wherein the mask has a variable height along the square image watermark created relief stamping grid, filigrees and/or joint punching mesh and filigrees, and/or use of the som is such layers filigrees, while separate, consecutive layers filigrees in the mask may have holes with different diameter and density. 2. The method according to claim 1, characterized in that the mask is assembled from several layers of perforated plates of metal. 3. The method according to claim 1, characterized in that the mask is assembled from multiple layers of polymer plates or composite materials. 4. The method according to claim 1, characterized in that when forming the mask is used to fill resins (adhesives). 5. The method according to claim 1, characterized in that the mask is combined of several layers of perforated plates made of metal, polymers and composites. 6. Paper, protected from tampering, characterized in that it is manufactured according to any one of claims 1 to 5. 7. Printing the product is protected against forgery, characterized in that it is made on paper according to claim 6.
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