EP3149243A1 - Substrat pour document securise - Google Patents
Substrat pour document securiseInfo
- Publication number
- EP3149243A1 EP3149243A1 EP15732385.8A EP15732385A EP3149243A1 EP 3149243 A1 EP3149243 A1 EP 3149243A1 EP 15732385 A EP15732385 A EP 15732385A EP 3149243 A1 EP3149243 A1 EP 3149243A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- composition
- substrate according
- binder
- nanometric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 70
- 239000000203 mixture Substances 0.000 claims abstract description 66
- 239000002245 particle Substances 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 39
- 239000000049 pigment Substances 0.000 claims description 26
- 239000011230 binding agent Substances 0.000 claims description 22
- 238000007639 printing Methods 0.000 claims description 18
- 239000008119 colloidal silica Substances 0.000 claims description 10
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 11
- 238000011282 treatment Methods 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 238000004513 sizing Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- -1 SiCl 4 Chemical class 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920004482 WACKER® Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- NNYBQONXHNTVIJ-UHFFFAOYSA-N etodolac Chemical compound C1COC(CC)(CC(O)=O)C2=C1C(C=CC=C1CC)=C1N2 NNYBQONXHNTVIJ-UHFFFAOYSA-N 0.000 description 1
- 238000007647 flexography Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/48—Elements suited for physical verification, e.g. by irradiation
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
- D21H21/52—Additives of definite length or shape
Definitions
- the present invention relates to secure documents and methods and compositions used for their manufacture.
- Secure documents include sheet-like substrates that are often paper-based and security features, some of which are applied by printing.
- EP 1 844 945 describes a method for applying interferential pigments to a substrate and the substrate thus obtained.
- EP 0 493 231 A1 discloses a substrate on which is applied a composition containing an iridescent pigment.
- printing plates are inked which are etched and subjected to a high pressure (often greater than 50 MPa), as well as at a temperature of between 70.degree. About 80 ° C. If an iridescent layer is printed on a sheet of paper, this iridescent layer may tend to be more or less partially transferred to the printing plates.
- the iridescent layer resists all the mechanical actions that could alter it.
- security documents made from these sheets circulate between individuals and pass through various machines, for example false document detectors, vending machines, etc.
- the documents undergo treatments likely to deteriorate, for example they are folded, wrinkled, wet, scraped, subjected to various friction and may even undergo washing treatment by introduction into a washing machine.
- the coated substrate must also be able to be printed satisfactorily.
- the line obtained by printing must be perfectly clean, that is to say, it does not have burrs. It must be possible to make micro-prints, which are very useful as security elements because they are difficult to reproduce by photocopiers which currently can not reproduce very fine prints.
- Print rendering is also characterized by the print color density.
- composition providing an optical effect of brightness while being easily carried by any coating or printing means on a substrate so that the gloss effect is conserved and at the same time it is possible to print on this coating by obtaining a good print rendering and a good resistance to the circulation of the printed substrate.
- the composition must also be compatible with the security elements conventionally used such as fibers and security threads.
- the object of the invention is to respond to them and thus has, according to a first of its aspects, a substrate coated at least partially on at least one of its faces with a composition comprising reflective particles and a nanometric charge, preferably mineral, and most preferably a colloidal silica, preferably pyrogenic.
- the invention makes it possible to obtain a good printability of the zone thus coated, in particular, in soft-cut, as well as a relatively high gloss. It is preferred to use, as a nanometric filler, fumed colloidal silica, which gives good printability properties and, surprisingly, also has an effect on the brightness of the composition applied in the presence of the reflective particles.
- the invention further relates, according to another of its aspects, to a secure document comprising a substrate according to the invention, a substrate treatment composition and a method of manufacturing the substrate.
- the substrate coated with the composition may be printed on the area already coated with composition, especially with micro-intaglio prints.
- "Secure document” means a means of payment, such as a bank note, a check or a restaurant ticket, an identity document, such as an identity card, a visa, a passport or a passport. driver's license, a lottery ticket, a ticket, a tax stamp or stamp, or a ticket for cultural or sporting events.
- nanometric load is meant a charge whose largest dimension is between 1 nm and 1000 nm
- the filler according to the invention preferably comprises an amorphous silica, better a pyrogenic amorphous silica, also called fumed colloidal silica.
- silica may be manufactured by a high temperature hydrolysis process of a volatile silicon compound such as SiCl 4 , passing through an oxyhydrogen flame.
- Such a silica makes it possible to improve the quality of the printing.
- a nanometric charge comprising silica is advantageous because it has the advantage of not absorbing UV radiation useful for luminescence, which makes it possible to produce the security element with one or more luminescent layers, in particular fluorescent under UV.
- the largest dimension of the particles of the nanometric charge is preferably between 1 and 500 nm, better still between 1 and 200 nm, and better still between 50 and 200 nm.
- the nanometric size of the filler makes it possible to limit the dullness tending to be brought by it, especially when it consists of silica.
- the specific surface of the nanometric filler particles is between 50 and 300 m 2 / g.
- the nanometric charge is preferably anionic in order to be compatible with the binders generally used in the field of security documents, these binders being indeed anionic.
- the nanometric charge is a fumed silica, it may be a hydrophilic or hydrophobic silica, acid or basic.
- a nanometric charge comprising or consisting of basic hydrophilic silica with a specific surface area of between 200 and 300 m 2 / g is particularly preferred.
- the amount of nanometric filler, in particular fumed colloidal silica, in the substrate treatment composition is preferably between 10 and 70% by dry weight, relative to the total dry weight of the composition, better still between 30 and 70% by weight. %, even better between 30 and 60%.
- nanometric charges there may be mentioned fumed colloidal silicas sold by the company Wacker Chemie under the reference HDK, or those of the company Cabot Corporation sold under the reference Cab-o-sperse PG001 or PG002 .
- the nanometric charge may consist exclusively of fumed colloidal silica.
- the nanometric charge may comprise a mixture of nanometric charges of different natures.
- reflective particles particles dispersed in a binder which when applied to a substrate produce a high gloss in contrast with the low gloss of the substrate, especially in the case of a localized application of the composition.
- the brightness difference provided by the reflective particles relative to the substrate is greater than or equal to 2UB, preferably 4UB.
- Gloss is the ability of a surface to reflect light in a precise direction (specular reflection). A ray of light is directed at the surface with a precise angle and the light reflected at the same angle is measured. The higher the amount of light, the brighter the surface.
- the reflective particles are preferably chosen from interferential pigments and metallic pigments.
- the interference pigments may comprise a substrate, natural or synthetic, in particular silica, mica, alumina or borosilicate, and one or more layers of different refractive indices, in particular an alternation of high and low indices, producing a color by interference.
- the pigment produces this color through a succession, in the path of light, of at least two different refractive index materials.
- a pigment interfere! multilayer is still sometimes referred to as "mother-of-pearl" in the case of layers deposited on a platelet-based basis.
- a pigment interfere! el is different from a liquid crystal, which can also generate a color by an interference phenomenon due to its intrinsic structure.
- the multilayer interference pigment according to the invention comprises a transparent base, preferably mineral, coated with at least one layer of a refractive index material different from that of the base.
- the pigment may comprise a platelet base, preferably of mica or glass.
- the pigment comprises mica or silica (silicon dioxide) coated with titanium dioxide.
- the reflective particles may also be chosen from metallic pigments, preferably those having a layer of a metal chosen from aluminum, nickel, chromium, silver, gold, copper, tin, and their alloys. .
- the metal layer may coat a natural or synthetic substrate of spherical or platelet shape, especially formed of silica, mica, alumina, or borosilicate.
- the metallic pigments can behave like mirrors and, especially when their surface state is smooth, do not produce color by interference, unlike interference pigments.
- the average size D50 of the reflective particles may be between 1 and 100 microns, more preferably between 10 and 60 microns.
- the reflective particles are chosen for example from those sold under the references Iriodin (Merck), Mearlin (BASF), Sungem (SunChemical).
- the amount of reflective particles may be between 1 and 60% by dry weight relative to the total dry weight of the composition, preferably from 25 to 50%.
- the quantity can be chosen differently depending on whether the composition is intended to be applied locally or on a complete face of the substrate.
- the mass proportion of reflective particles may be higher, especially between 35 and 60% by dry weight, whereas for an application on a whole face, the mass proportion may be between 2 and 5% by weight. and 15% by dry weight.
- the composition may comprise only one category of reflective particles, for example only an interferential pigment or only a metallic pigment.
- the composition comprises a mixture of interferential pigments, a mixture of metallic pigments or a mixture of one or more interference pigments with one or more metallic pigments.
- composition may comprise, in addition to the reflective particles, other optical agents such as dyes, fluorescent particles, for example fluorescent or phosphorescent, thermochromic, photochromic, tribochromic particles, plasmon-effect particles.
- other optical agents such as dyes, fluorescent particles, for example fluorescent or phosphorescent, thermochromic, photochromic, tribochromic particles, plasmon-effect particles.
- the composition may comprise, in addition to the reflective particles, tactile agents, in particular particles having a size of between 5 and 150 ⁇ .
- the composition may comprise, in addition to the reflective particles, authenticating agents, in particular tracers in the form of active materials, particles or fibers, capable of generating a specific signal when these tracers are subjected to optronic excitation. , electric, magnetic or electromagnetic.
- Said optical, tactile or authentication agents may be in the form of particles added to the composition.
- these agents are incorporated in and / or on the reflective particles and / or the nanometric charges.
- the substrate according to the invention is obtained by treating a base substrate with at least one treatment composition comprising a nanometric filler and reflective particles, as defined above.
- the base substrate is treated with a single composition containing both the reflective particles and the nanoscale filler mixed with a binder.
- the dry amount of composition applied per unit area of the substrate may be between 2 and 35 g / m 2, better still between 5 and 20 g / m 2 .
- the composition is formulated to be adapted to the technique used to coat the substrate.
- the composition may be an aqueous solution or based on at least one organic solvent.
- the composition preferably comprises a binder, in particular a film-forming polymer binder, in a mass proportion by dry weight preferably of between 10 and 90% relative to the total dry weight of the composition, preferably from 30 to 70%,
- the binder used is preferably transparent in the dry state, this transparency being preferably in the visible, but also in the UV or IR, if necessary, if the composition must cover, for example, luminescent safety elements, for example fluorescent under UV.
- the binder is preferably chosen from acrylic polymers, polyurethanes, polyalcohols (preferably polyvinyl alcohols), polyacetates (preferably polyvinylacetates), polystyrene-butadienes, polyethylenes, and the like, and mixtures thereof.
- This binder may be in a dry weight ratio of between 10 and 90% by weight, preferably between 30 and 70% by dry weight relative to the total dry weight of the composition.
- the composition may comprise a crosslinker in a mass proportion of between 2 and 10% by dry weight relative to the binder, preferably 4 to 8% by dry weight relative to the binder.
- the crosslinking agent may be chosen from polyisocyanates, polycarbodiimides and polyaziridines, and mixtures thereof.
- the crosslinking agent may be separate from the binder or may be included in a binder then called a self-crosslinking binder. Such a crosslinking agent makes it possible to provide resistance to the coating in the wet state, which is generally desirable in the field of security documents.
- crosslinking agent known under the trade name Acrafix PCI from Tanatex Chemicals.
- the binder and crosslinker may represent, in dry weight, between 10 and 90%, preferably between 30 and 70% of the total dry weight of the composition.
- composition is preferably free of surfactant.
- the composition may be applied to the base substrate by impregnation, surfacing, sizing, printing, or coating, in particular coating.
- the composition is applied by surfacing, sizing or coating.
- the treatment can be localized, for example in band, or be performed on the entire surface of at least one face. It is preferably at least one printed face intaglio thereafter.
- both sides of the base substrate are processed.
- the base substrate when porous has undergone prior treatment, including impregnation, surfacing, sizing or coating (including coating). It is preferably an impregnation or surfacing.
- the pretreatment closes the pores of the substrate and thus obtain a smoother surface for applying the composition according to the invention.
- this zone can make it possible to locally print micro-impressions.
- the base substrate is preferably a paper, based on natural or synthetic fibers.
- the paper comprises papermaking fibers and any additives suitable for its manufacture.
- it may be of primarily cellulosic nature, which can be reinforced by the addition of synthetic fibers in an amount of between 1 and 50%, preferably between 5 and 15% by weight.
- the substrate may comprise, when it is intended for the manufacture of banknotes, cellulosic fibers and more particularly cotton fibers. Other plant fibers of annual plants may enter the composition of the substrate, when fibrous.
- the substrate may have one or more jets of paper assembled in the wet state.
- the substrate may have, as finished and dry paper, before sizing and deposition of the composition according to the invention, a basis weight of between 20 and 120 g / m 2 and a thickness of between 30 and 180 ⁇ .
- the base substrate may comprise a watermark, as well as any other usual security elements, first, second or third level.
- Some of the security features are detectable to the eye, daylight or artificial light, without the use of a particular device.
- These additional security elements comprise, for example fibers or colored boards, fully or partially printed or metallized wires. These security elements are called first level.
- security elements are detectable only with a relatively simple device, such as a lamp emitting in the ultraviolet (UV) or infrared (TR).
- UV ultraviolet
- TR infrared
- These security elements comprise, for example, fibers, boards, strips, wires or particles.
- These security elements may be visible to the naked eye or not, being for example luminescent under the lighting of a Wood lamp emitting at a wavelength of 365 nm.
- These security elements are said to be second level.
- security elements require for their detection a more sophisticated device. These security elements are for example capable of generating a specific signal when they are subjected, simultaneously or not, to one or more external excitation sources. The automatic detection of the signal makes it possible to authenticate, if necessary, the document.
- These security elements comprise, for example, tracers in the form of active materials, particles or fibers capable of generating a specific signal when these tracers are subjected to optronic, electrical, magnetic or electromagnetic excitation. These security elements are said to be third level.
- the security element or elements present in the secure document according to the invention may have first, second or third level security features.
- base substrate an entirely synthetic paper or a multilayer plastic film suitable for a soft-printing, as disclosed in patent application EP2722172.
- a synthetic substrate as described in application WO 83/00659. It is also possible to use as a base substrate a multilayer synthetic substrate comprising a compressible core structure of polymeric material covered by two non-completely opaque protective layers.
- a base substrate a multilayer substrate comprising a paper core structure covered on both sides by a protective plastic layer as described in application WO 2004/028825.
- a basic substrate may be a multilayer substrate comprising a core structure of a polymeric material covered on both sides by a layer of paper as described in application WO 2004/076198.
- the substrate according to the invention, coated with composition, is in coil or sheets.
- a paper whose fiber formulation is 95% cotton fibers and 5% synthetic fibers by weight is used.
- the basis weight of this substrate is 95g / m 2 .
- the treatment composition according to the invention comprises, as binder, a crosslinkable polyurethane, for example that known under the reference Edolan SE from Tanatex Chemicals.
- composition contains, as crosslinking agent, an isocyanate base, for example that known under the name Acrafix PCT from Tanatex Chemicals, in a proportion of 7% by dry weight relative to the weight of binder.
- an isocyanate base for example that known under the name Acrafix PCT from Tanatex Chemicals
- the iridescent pigment is the one marketed by Merck under the reference
- the nanometric mineral filler is the colloidal silica marketed by Wacker Chimie under the reference XK20030.
- compositions are produced with such a binder and crosslinking mixture, which is screen printed on the base substrate to obtain a dry deposit of 12 g / m 2 .
- AWS patterns are intaglio printed and whiteness and gloss are measured on the non-inked and non-patterned part of the intaglio printing, the part subjected to printing at high pressure (often greater than 50 MPa) ) as well as a temperature of between 70 and 80 ° C.
- ISO whiteness is determined by ISO 2470-2 "Paper, board and pulps - Measurement of diffuse reflectance factor in blue - Part 2, Outdoor daylight conditions (degree of whiteness D65)".
- the substrate which has been treated with the third composition according to the invention comprising both the nanometric filler of colloidal silica and the iridescent pigment, has the best gloss on a soft-cut.
- a high contrast can be obtained between the dullness of intaglio printing and the brilliance of the iridescent coating, which enhances the impression.
- the nanometric charge may comprise nanometric particles of metal oxides (for example titanium dioxide, zinc oxide) and metal ionic derivatives (for example calcium carbonate and barium sulfate).
- metal oxides for example titanium dioxide, zinc oxide
- metal ionic derivatives for example calcium carbonate and barium sulfate
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Printing Methods (AREA)
Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1454724A FR3021251B1 (fr) | 2014-05-26 | 2014-05-26 | Substrat pour document securise. |
PCT/IB2015/053713 WO2015181686A1 (fr) | 2014-05-26 | 2015-05-20 | Substrat pour document securise |
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EP3149243A1 true EP3149243A1 (fr) | 2017-04-05 |
EP3149243B1 EP3149243B1 (fr) | 2024-08-14 |
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EP15732385.8A Active EP3149243B1 (fr) | 2014-05-26 | 2015-05-20 | Substrat pour document securise |
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EP (1) | EP3149243B1 (fr) |
FR (1) | FR3021251B1 (fr) |
WO (1) | WO2015181686A1 (fr) |
Citations (1)
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EP1844945A1 (fr) * | 2006-04-13 | 2007-10-17 | M-real Oyj | Méthode d'application de pigments d'interférence sur un substrat |
Family Cites Families (10)
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GB2125337B (en) | 1981-08-24 | 1985-05-01 | Commw Scient Ind Res Org | Improved banknotes and the like |
FR2670812B1 (fr) | 1990-12-21 | 1996-06-21 | Arjomari Europ | Feuille imprimable pour fabriquer des documents de securite comportant un moyen contre la contrefacon ou d'authentification. |
FR2814476B1 (fr) * | 2000-09-11 | 2003-04-11 | Arjo Wiggins Sa | Feuille de securite comportant une couche transparente ou translucide |
US6544713B2 (en) * | 2001-08-16 | 2003-04-08 | Eastman Kodak Company | Imaging element with polymer nacreous layer |
DE10243653A1 (de) | 2002-09-19 | 2004-04-01 | Giesecke & Devrient Gmbh | Sicherheitspapier |
ATE394243T1 (de) | 2003-02-27 | 2008-05-15 | Landqart | Mehrschichtlaminat |
GB0421685D0 (en) * | 2004-09-30 | 2004-11-03 | Arjo Wiggins Fine Papers Ltd | Multi-layer coating products and curtain coating process for same |
FR2925864B1 (fr) | 2007-12-28 | 2012-08-31 | Arjowiggins Licensing Sas | Feuille de securite comportant un support coextrude |
WO2011019052A1 (fr) * | 2009-08-12 | 2011-02-17 | 三菱製紙株式会社 | Materiau d'enregistrment a jet d'encre |
EP2325389B1 (fr) * | 2009-11-12 | 2016-08-10 | bene_fit systems GmbH & Co. KG | Matière de revêtement pour composite fibreux |
-
2014
- 2014-05-26 FR FR1454724A patent/FR3021251B1/fr active Active
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2015
- 2015-05-20 EP EP15732385.8A patent/EP3149243B1/fr active Active
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EP1844945A1 (fr) * | 2006-04-13 | 2007-10-17 | M-real Oyj | Méthode d'application de pigments d'interférence sur un substrat |
Non-Patent Citations (4)
Title |
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ANONYMOUS: "THERE'S A SECRET TO PERFECT COATINGS AND INKS: HDK PYROGENIC SILICA - Google Search", 5 August 2020 (2020-08-05), XP055720410, Retrieved from the Internet <URL:https://www.***.com/search?q=THERE'S+A+SECRET+TO+PERFECT+COATINGS+AND+INKS:+HDK+ +PYROGENIC+SILICA&rlz=1C1GCEB_enDE887DE887&source=lnt&tbs=cdr:1,cd_min:,cd_max:5/26/2014&tbm=> [retrieved on 20200805] * |
MARGARET JOYCE ET AL: "Influence of silica and alumina oxide on coating structure and print quality of ink-jet papers", 28 February 2005 (2005-02-28), XP055720380, Retrieved from the Internet <URL:https://www.researchgate.net/publication/296860252_Influence_of_silica_and_alumina_oxide_on_coating_structure_and_print_quality_of_ink-jet_papers> [retrieved on 20200805] * |
See also references of WO2015181686A1 * |
UNKNOWN: "THERE'S A SECRET TO PERFECT COATINGS AND INKS: HDK PYROGENIC SILICA CREATING TOMORROW'S SOLUTIONS", 18 February 2006 (2006-02-18), XP055720412, Retrieved from the Internet <URL:http://www.aws-silicone.com/dcms-download-file/index/path/uploadMediaPath/other/HDK_Coatings_and_Inks_eng.pdf> [retrieved on 20200805] * |
Also Published As
Publication number | Publication date |
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EP3149243B1 (fr) | 2024-08-14 |
FR3021251A1 (fr) | 2015-11-27 |
FR3021251B1 (fr) | 2017-10-27 |
WO2015181686A1 (fr) | 2015-12-03 |
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