Method for treating surface of a banknote

FIELD: polygraphy.

SUBSTANCE: invention relates to a method for treating surface of a banknote, comprising, on at least one of its opposing faces, at least a printed image, comprised of at least a design. This face and its associated printed image have a transparent protective coating. Coating is applied via printing and dried. Coating contains a varnish and an organic compound, incorporating fluorine atoms in the form of at least a perfluoro-polyether (PFPE) group, on said face.

EFFECT: invention provides increased durability of banknotes in terms of mechanical strength and chemical resistance at its regular authentication and higher protection.

12 cl, 6 dwg, 2 tbl



Same patents:

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing counterfeit-proof paper for production of counterfeit-proof documents such as banknotes, identity documents based on plastic cards or the like, with a protective element made in the form of a strip, which is embedded into the counterfeit-proof paper and directed at least on one opening in the counterfeit-proof paper on one of the surfaces of the counterfeit-proof paper. The mesh cylinder of a cylinder paper-making machine takes the pulp in the form of the fibre-water slurry from the tub. In addition, the invention relates to the mesh cylinder of a cylinder paper-making machine to manufacture the respective counterfeit-proof paper. According to the invention, on the mesh cylinder for each unit of use at least one first raised platform is applied, which is formed by a closed frame which encloses at least one recess. On the mesh cylinder at least one other raised platform is applied, which performs direction of the protective element made in the form of a strip in the transverse direction so that the protective element made in the form of a strip is placed on the first raised platform and does not protrude or protrudes only slightly beyond the first raised platform on its both longitudinal sides, at that inside the first raised platform the fibre-water slurry cannot agglomerate.

EFFECT: improvement of protection.

10 cl, 7 dwg

FIELD: textiles, paper.

SUBSTANCE: method of production of security paper consists in adding to the paper pulp of protective markers on a carrier. The carrier is used as particles or a mixture of particles of a polymeric hydrogel. The maximum particle size of the hydrogel is up to 1000 microns.

EFFECT: improved protection of valuable documents.

21 cl, 5 ex

FIELD: printing industry.

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

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

12 cl, 8 dwg, 6 ex

FIELD: printing.

SUBSTANCE: invention relates to the field of protection of valuable documents against forgery. The valuable document comprises on its surface an invisible protective marking applied on the elongated section along the long side of the document, which is intended for the instrument reading. The protective marking has the property of selective absorption of the radiation in the range optical spectrum from 0.76 mcm to 10 mcm. The marking is wholly or partially located in the area of additional masking marking. The material of the latter has the property of re-radiation when exposed of the exciting radiation of the same spectral composition as the material of the protective marking, but is characterised with magnitude of afterglow time. The method of determining the authenticity of the valuable document comprises revealing the hidden security marking on the valuable document. The revealing of marking is carried out by registration of afterglow of its material after removal of the exciting radiation and/or by registration of the diffuse reflection of the material in the optical range of wavelengths from 0.76 mcm to 10 mcm. Violation of the predetermined information indicates full or partial forgery.

EFFECT: increase in the level of protection of the valuable document against forgery.

13 cl, 4 ex

FIELD: physics.

SUBSTANCE: method of inspecting paper with optical protective marks on banknote threads involves synthesis of a flat optical element with an asymmetric microrelief. An asymmetric image is formed in an optical element to allow automatic inspection, invariant to the shift of the banknote and turning thereof within 10 degrees when the protective mark is illuminated with a laser beam perpendicular to the plane of the banknote. The image is in form of bright sections, parallel to the direction of movement of the banknote in the channel of a counting and sorting device, lying in the focal plane, parallel to the plane of the banknote, or in planes Q1 and Q2, each inclined to the plane of the banknote by an angle α, which is less than 60 degrees. The line of intersection of planes Q1 and Q2 is parallel to the direction of movement of the banknote. The control feature for identification is the distance from each of the sections to the laser beam. The apparatus for inspecting paper with optical protective marks on banknote threads includes a diode laser, a detection system, an electronic unit for recording information from a line of photodiodes and an electronic unit which performs automatic inspection. The diode layer emits a laser beam perpendicular to the plane of the banknote.

EFFECT: high protection of optical marks from forgery, high reliability of identification and invariance of the inspection procedure at high speeds of the banknote in the channel of a counting and sorting machine.

3 cl, 16 dwg

FIELD: textile, paper.

SUBSTANCE: sandwich product protected against forgery includes sheets of paper with protective elements, which are saturated with a polymer binding agent, and external polymer layers. Sheets of paper are saturated in molten thermoreactive or thermoplastic polymer throughout the volume and surfaces of each sheet are coated with a polymer layer; besides, the product surfaces are of a relief type. A manufacturing method involves saturation of sheets of paper with protective elements with the molten thermoreactive or thermoplastic polymer, or with their mixtures, drying with partial polymerisation, assembly of a pack of saturated sheets, hot pressing lamination with simultaneous formation of surface relief and products of the specified geometrical shape.

EFFECT: producing substitutes of currency notes based on sandwich plastic materials containing protective elements and having high indices of stability to aggressive action and mechanical wear during operation.

8 cl, 2 ex

FIELD: information technology.

SUBSTANCE: graphic elements are deposited using printing techniques on one or both sides of the medium, wherein mutual arrangement thereof is such that said elements form an image having an optically variable effect. The graphic elements are deposited by scratch-off printing while meeting the following conditions: engraving groove depth should not exceed 14 mcm and the width of the graphic elements should be of the order of the thickness of the data medium. The obtained data medium retains its flatness. The thickness of the paint layer is in the range of 3 to 10 mcm.

EFFECT: high degree of protection of articles while obtaining a novel optically variable effect or movement effect, high manufacturability and low cost of the protective element.

8 cl, 10 dwg, 2 ex

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

FIELD: process engineering.

SUBSTANCE: 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.

EFFECT: ruled out fouling nearby opening edges, stability of protective element at flexure.

7 cl, 4 dwg

Covered document // 2439235

FIELD: textiles, paper.

SUBSTANCE: 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.

EFFECT: increased degree of protection of documents against forgery and counterfeiting, improvement of identification while automatic reading of documents.

59 cl, 18 dwg, 5 ex

FIELD: textiles, paper.

SUBSTANCE: invention relates to production of paper. The method comprises processing the filler particles with coagulant - a copolymer of acrylamide/ammonium diallyldimethylchloride (AcAm/DADMAC), mixing the filler particles and cellulose fibres, processing the resulting mixture with the hardening additive - glyoxylated copolymer of acrylamide/ammonium diallyldimethylchloride (AcAm/DADMAC) and formation of matte paper. At least 10% of the filler particles are precipitated calcium carbonate and at least 10% of the said filler particles are ground calcium carbonate.

EFFECT: invention enables to manufacture matte paper with a high content of mineral filler without loss of paper strength.

9 cl, 3 dwg

FIELD: chemistry.

SUBSTANCE: method involves forming napkin fabric from an aqueous suspension of fibres. The napkin fabric is then moved through a first end-to-end air drier and a second end-to-end air drier. An additive composition is then deposited on at least one side of the napkin fabric. The additive composition contains an aqueous dispersion which contains a non-fibrous alpha-olefin polymer. The alpha-olefin polymer contains an alpha-olefin interpolymer of ethylene or propylene and at least one comonomer. Each comonomer is bound only by compounds of formula H2C=CHR, where R is a straight or branched C1-C20-alkyl group. The napkin article has specific of more than approximately 3 cm3/g after depositing the additive composition.

EFFECT: high strength of the fabric while retaining its tactile softness.

24 cl, 12 dwg

FIELD: chemistry.

SUBSTANCE: method involves depositing an additive composition onto a moving creping surface, pressing the base sheet to the creping surface after depositing the additive composition and removing the base sheet from the creping surface. The additive composition contains lotion, a debonder, a softener, aloe, vitamin E, oxidised polyethylenene or mixtures thereof and the base sheet is adhesively attached to the creping surface. The additive composition is also transferred onto the base sheet such that the additive composition makes up at least about 1% of the weight of the sheet article.

EFFECT: method of making a sheet article, improved process of creping fabric, introduction of useful additives in amounts sufficient for improving quality of sheets.

17 cl, 3 ex, 21 dwg

FIELD: textiles, paper.

SUBSTANCE: cardboard comprises solid cardboard substrate of bleached sulphate pulp (BSP) and a coating applied to the cardboard substrate to form a coated structure. The said coated structure has a surface density, thickness of the sheet and the Parker surface smoothness. The Parker surface smoothness is at most about 3 microns, and the surface density is at most about Y2 or Y3 or Y4 pound/3000 foot2, where Y2, Y3 and Y4 are functions of the said thickness (X) of the sheet in points which are calculated using the equation: Y2=3.71+13.14X-0.1602X2 or Y3=3.63+12.85X-0.1566X2, or Y4=3.50+12.41X-0.1513X2.

EFFECT: invention provides a coated cardboard with increased smoothness with the required parameters of thickness and the surface density to ensure high-quality printing.

13 cl, 10 dwg, 1 tbl, 6 ex

Wipe product // 2430709

FIELD: medicine.

SUBSTANCE: wipe product relates to absorbent paper products. A wipe product represents a wipe sheet having a first side and a second side. The wipe sheet contains cellulose fibres in an amount at least 50 wt %, and an additional composition containing polymer. The additional composition is present at least on the first side of the wipe sheet. The wipe product has extensionality exceeding 3 cm3/g, a fluffiness test value less than approximately 3 mg, and the first side of the wipe sheet has a stick-slip value more than approximately 0.01. The additional composition contains a non-fibrous olefin polymer, ethylene carboxylic acid copolymer or their mixture. The additional composition can be included in a wipe cloth by means of fibre combination to be used for cloth formation. Alternatively, the additional composition can be superficially applied on the formed cloth.

EFFECT: better quality of the wipe product.

20 cl, 42 dwg, 18 tbl, 7 ex

FIELD: construction.

SUBSTANCE: paper surface is treated with glue, including water, a latex binder and a mineral filler with the specified ratio of components. The latex binder is selected from the group, including ethylene polyvinyl acetate, polyvinyl acetate latex, styrene butadiene rubber, acrylic and vinyl acrylic rubber. A sheet material is also proposed to line a gypsum wall board, as well as the method to produce treated paper and glue for surface treatment.

EFFECT: higher strength of a wall board by using a smaller ratio of water-gypsum, its improved characteristics with provision of lower energy consumption.

46 cl, 2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: napkin article with density of over 3 cm3/g includes a napkin made from cellulose fibre and an additive composition on the first side of the napkin which contains a non-fibrous olefin polymer, an ethylene-carboxylic acid copolymer or mixture thereof. The napkin article is made using a method which involves preparation of an aqueous suspension of cellulose fibre, forming a napkin from the aqueous suspension of fibre and drying the napkin. The additive composition is deposited on dry fibres before preparation of the aqueous suspension of fibre, and is added to the aqueous suspension of fibre or for formation of the napkin. The additive composition contains a non-fibrous olefin polymer, an ethylene-carboxylic acid copolymer or mixture thereof and a dispersing agent.

EFFECT: high strength of the napkin without considerable negative effect on softness.

28 cl, 26 dwg, 6 tbl, 3 ex

FIELD: personal use articles.

SUBSTANCE: napkin items, containing additive compositions, relate to cosmetic volume napkins, method of their production and sheet item. Napkin item with bulk of more than 3 cm3/g includes napkin cloth of cellulose fibres and additive composition, available on the first side of napkin cloth, which contains non-fibre olefin polymer, copolymer of ethylene-carbonic acid or their mixtures. In another version of napkin cloth the first side of paper cloth is creped after application of above specified additive composition. Napkin items are made by method including application of above specified additive composition onto the first side of napkin cloth, where napkin cloth comprises cellulose fibres, and creping of the first side of napkin cloth with creped surface, where additive composition helps napkin cloth to stick to creping surface. Sheet item comprises base cloth of cellulose fibre. Base cloth is hydraulically entangled cloth, coform cloth or air-laid cloth. Cloth also includes above-specified additive composition and has bulk of more than around 3 cm3/g.

EFFECT: improved strength of napkin cloth and/or cloth softness by touch without attendant issues of sticking.

37 cl, 37 dwg, 5 ex, 8 tbl

FIELD: chemistry.

SUBSTANCE: invention pertains to use of polyvinyl alcohols with functional silane groups in primary coating for separate paper and film layers, containing at least, one silane containing polyvinyl alcohol based on fully or partially saponified copolymers of complex vinyl esters with degree of hydrolysis from 75 to 100 mol.%, which are obtained through radical polymerisation of monomers (a) and (b), as well as comonomers (c) when necessary. The invention also relates to the method of depositing adhesive coating for separate paper and film layers, including primary coating of a substrate using a primary coat containing the above mentioned silane containing polyvinyl alcohol, and subsequent depositing of silicon layer.

EFFECT: early depositing on paper and film layers of the given silane containing polyvinyl alcohols, as primary coating, allows preventing penetration of the silicon layer into the substrate during the depositing process, and also allows increasing resistance to abrasion of the silicon coated surface; besides that, viscosity of the polyvinyl alcohols does not increase during storage, and this leads to increased storage time of separate paper and film layers.

7 cl, 3 ex, 2 tbl