Method of producing polymer film with discrete luminescent dyeing for paper anti-falsification tools

FIELD: chemistry.

SUBSTANCE: method of producing a polymer film with discrete luminescent dyeing for paper anti-falsification tools includes the steps of dyeing the polymer film material with fluorescent dyes. Hydrophilized polypropylene microporous membranes obtained by dry stretching are used as a polymeric film material. The film material is discreetly dyed with ink jet printing with aqueous fluorescent ink and laminated on both sides with thermally activated films at a temperature of 135C.

EFFECT: improved method of producing polymer film materials for paper security, which eliminates the contact of paper pulp with a phosphor, provides high quality discrete dyeing and an increase in the life of protective tools.

1 dwg, 1 ex



Same patents:

FIELD: textiles, paper.

SUBSTANCE: 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.

EFFECT: creation of an effective means of protection against forgery of valuable documents.

14 cl, 3 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

FIELD: textile, paper.

SUBSTANCE: movable support surface with waterproof areas is passed through a bath with a fibre-containing solution, thus aiding in accumulation of fibres on the movable support surface. A belt is fed to the movable support surface, which contains open parts and linking parts so that open parts are substantially opposite to waterproof areas of the movable support surface. The belt is fed to the movable surface in the bath under its free surface in the area, where fibres have already been accumulated on the movable support surface, accumulation of fibres continues so that they are accumulated on linking parts and along the contour of open parts. At the same time waterproof areas do not protrude relative to the specified movable surface or protrude by not more than the thickness of a sealing substance applied onto the movable surface at the level of waterproof areas.

EFFECT: method ensures development of a fibre base with windows on a movable support surface, which does not contain relief elements, to simplify technology of base manufacturing with windows and to reduce requirements to accuracy of belt synchronisation with the surface.

8 cl, 5 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: textile, paper.

SUBSTANCE: device includes a flat lattice forming device, an apparatus to feed a paper mass to a forming lattice, a thread-feeding device and a facility to create open sections on the protective thread in the form of a system of nozzles connected to a line of water supply and with an electronic device to adjust head and time of water supply to nozzles. The facility to create open areas on a protective thread is a system of two parallel rows of nozzles arranged so that the first row of nozzles along with the motion of the paper web ensures water supply at the angle of 85-110 to the paper web, and the second row of nozzles ensures water supply at the angle of 100-130 to the paper web.

EFFECT: invention makes it possible to improve quality of produce by increasing of stability in process of making open areas on a protective thread during paper making.

6 cl, 1 dwg, 4 ex

FIELD: textile, paper.

SUBSTANCE: 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.

EFFECT: expanded assortment of protected materials, improvement of their protective properties with provision of tactile effect.

43 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer substrate 60 and method to produce a counterfeit-protected paper. Proposed substrate consists of the first paper interlayer (10, 202) with density varying from 10 to 80 g/m2 and second paper interlayer (20, 214) with density varying from 10 to 80 g/m2, and one layer of plastic made from thermosetting polymer materials arranged between aforesaid interlayers (10, 20, 202, 214) and bound therewith. Proposed method consists in that plastic layer, as-melted, is introduced between said paper interlayers (10, 20, 202, 214) for them to be squeezed between two rolls (50) in continuous process. Said two rolls 50 are kept at temperature exceeding room temperature but lower than that plastic material melt. Paper interlayers and plastic layer are bound together due to atomic-molecular forces between said layers to produce penetration zone wherein plastic layers are bound with fibrous material of aforesaid interlayers (10, 20, 202, 214). Plastic layer density varies from 22 to 80 g/m2.

EFFECT: better counterfeit protection, longer life.

38 cl, 5 ex, 3 tbl, 4 dwg

FIELD: paper industry.

SUBSTANCE: 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.

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: textile, paper.

SUBSTANCE: invention relates to protective strip and counterfeit-protected paper intended to make secured documents, such as treasury notes, cheques or identification documents. Protective strip consists of cellulose support cloth formed by plant fibres and is arranged with the possibility of introduction into substrate, which consists of mass including plant fibres, so that specified protective strip is hard to detach due to physical and chemical links formed between plant fibres of substrate and support cloth.

EFFECT: proposed invention provides for prevention of document counterfeiting.

13 cl, 4 dwg

FIELD: printing.

SUBSTANCE: document comprises a substrate and a protective element comprising the first and the second structures contained on the substrate. The substrate also comprises a region which is translucent or even transparent, and within which the first and second structures are located at least partially. The first and the second structures within the transparent area when the document is viewed in reflected light have at least the first and the second colours, respectively, and when the document is viewed in transmitted light, a mutual change of the said first and second colours occurs.

EFFECT: improved protection.

12 cl, 14 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to protection of documents from falsification and a method of obtaining an image which identifies authenticity of a data medium. When carrying out the method, image pixels are divided into sub-pixel regions, each being a diffraction grating which reflects one of the primary colours. An image is formed by partially breaking down diffraction gratings into sub-pixel regions. The gratings are broken down by laser engraving by modulating intensity, duration and the number of laser pulses using precise positioning of the laser beam on elements of the pixel matrix and special-purpose optical marks.

EFFECT: simplification of the method and forming images in one diffraction layer.

8 cl, 1 dwg

Protective mark // 2555667

FIELD: physics.

SUBSTANCE: protective mark comprises the ply with concealed image and reflecting ply. Note here that play with concealed polarisation image has isotropic and anisotropic areas. Note also that ply with concealed polarisation image can be polarised in phase and represents a quarter-wave plate.

EFFECT: higher level of protection against counterfeit and copying.

11 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to making of microstructure on substrate and includes the steps that follow. (A) Production of donor film by making of embossed structure with ledges and recesses at first film material and application of transfer ply on embossed structure. (B) Making of acceptor film by application of glue ply on second film material. (C) Masking of donor film and acceptor film by glue ply. Note here that transfer ply at embossed structure ledges is glued with glue ply. (D) Transfer of glued sections onto acceptor film owing to separation of donor film from acceptor film. This results in formation of the first micro structure in acceptor film and/or in donor film second micro structure if formed to supplement said first micro structure. Besides, invention relates to application of produced substrate as a component of protective structure and to protective element produced as described above and to protected product.

EFFECT: higher efficiency.

25 cl, 29 dwg

FIELD: printing.

SUBSTANCE: printing protective element is created, comprising at least a first and a second overprints. The first of them is a raster formed by the pixel grid having the form of signs bearing information, and the second is a raster which coincides in position with the first overprint. At that the combination of the first and second overprints is of the form of continuous-tone image, and the information contained in the said signs is at least partially hidden by the second overprint.

EFFECT: method of manufacturing the said protective element is created.

22 cl, 12 dwg

FIELD: physics.

SUBSTANCE: method includes forming an image within a sheet material comprising a monolayer of transparent microspheres, partially immersed in a reflecting layer deposited on a plastic substrate and containing a solid solution of fluorescent or luminiferous coloured particles. A plastic layer and a metal foil layer are successively deposited on a monolayer of microlenses. Pulsed laser radiation forms holes in the foil layer at given points and the plastic layer under the foil, the material of the reflecting layer and the plastic substrate are melted within the laser spot. Microlenses are melted with a compact laser beam within a reduced laser spot and fused with each other. A through-hole is formed in the plastic substrate. Clusters of microlenses with crystals formed thereon with nodules of the coloured particles of the reflecting layer and fused microlenses form points of the colour security image visible in transmitted light and reflected on surfaces of the sheet material by the set of coaxial holes.

EFFECT: easy recognition of a security feature, which provides reliable counterfeit protection of articles.

6 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: proposed process comprises preparation of substrate and its pre-structuring to make bulges on its face and recesses on its rear that comply with said bulges. Said substrate pre-structuring is performed by embossing via intaglio to apply translucent polymer in the area of bulges or recesses to make micro lenses on at least one side of said substrate. Production of substrate provided with micro lenses involves rigid connection of micro lenses with said substrate which features mirror symmetry relative to mirror plane aligned with mid plane of biconvex micro lenses and parallel with said substrate.

EFFECT: simplified process.

29 cl, 14 dwg

FIELD: physics, optics.

SUBSTANCE: mix comprises first set of pigment scales oriented by magnetic field. Said scales can vary their colour from first to second colour at first change of the angle of vision. Second set of pigment scales not oriented by magnetic field that can vary their colour from said first to third colour at second change of the angle of vision other than the first one. Note here that said first, second and third colours are different colours. Scales of said first and second sets are applied on substrate in binder that makes the mix of scales. Note also that said scales have said first colour if seen on substrate at direct angle. Note also that scales oriented by magnetic field are oriented, in fact, in similar way differing from orientation of scales not oriented by magnetic field so that substrate inclination relative to first axis causes the change in seen colour from said first to said second colour. Substrate inclination relative to second axis perpendicular to first axis causes the change of colour from first colour to said third colour.

EFFECT: coat colouration changing.

8 cl, 10 dwg

Marking element // 2549330

FIELD: chemistry.

SUBSTANCE: marking element is made in form of woven tape, formed by interlacing of main threads from thin poorly melting wire and weft threads of two types: glass threads of white colour and carbon threads of black colour, forming straps with specified combination, read by scanner. Application of fire-resistant threads in woven tape gives advantage of reliability of information storage under conditions of fire impact.

EFFECT: increase of protection of marking element against counterfeiting.

1 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to a multilayer body having a transparent first layer. In the transparent first layer, a plurality of microlenses, arranged according to a microlens grid, are imprinted in a first region. The multilayer body also has a second layer under the first layer and in a fixed position relative to the first layer and has a plurality of microimages arranged according to a microimage grid and in each case at least with local overlapping with one of the microlenses from the microlens grid in order to generate a first optically variable information element. The grid spacing in the microimage grid and in the microlens grid in each case in at least one spatial direction is less than 300 mcm. The second layer has in a first region at least one first area having microimages, and has at least one second area having optically active surface structures for forming a third optically variable information element, different from the first optically variable information element.

EFFECT: improved security.

32 cl, 14 dwg

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