EP3233514A1 - Procede de traitement d'un element de securite - Google Patents
Procede de traitement d'un element de securiteInfo
- Publication number
- EP3233514A1 EP3233514A1 EP15820482.6A EP15820482A EP3233514A1 EP 3233514 A1 EP3233514 A1 EP 3233514A1 EP 15820482 A EP15820482 A EP 15820482A EP 3233514 A1 EP3233514 A1 EP 3233514A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- security element
- face
- security
- optical structure
- 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
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010053317 Hydrophobia Diseases 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
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Classifications
-
- 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
- B42D25/324—Reliefs
-
- 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
- B42D25/355—Security threads
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- 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
- D21H21/42—Ribbons or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Definitions
- the present invention relates to the field of secure documents.
- Secure documents include identity documents, in particular identity cards and passports, means of payment, especially banknotes, checks, vouchers or vouchers, admission tickets at cultural or sports events, transport tickets. It can also be a secure document chosen from certificates of authenticity or guarantee certificates, or a secure packaging, especially for drugs, electronic parts, spare parts, perfumes, a secured card or a secure label. Preferably, it is a banknote.
- Such documents are conventionally provided with security elements integrated into a substrate, in particular paper or polymer, surface, window or mass.
- the fibrous substrate is protected by one or more layers of a transparent protective coating having a barrier effect against soiling.
- This protective coating must however provide the barrier function without unduly harming the printability of the paper during the manufacture of the notes.
- HD substrate high-durability substrate
- TDD substrate very high-durability substrate
- Patent EP 514 455 B1 thus discloses improving the resistance to circulation of banknotes by impregnating the fibrous substrate, before printing, with a composition which contains one or more binders chosen for their mechanical characteristics.
- US 2007/0017647 A1 discloses paper for making banknotes, having improved dirt resistance.
- the protective coating comprises at least two layers applied successively, including a base layer which is in contact with the fibrous substrate and closes its pores and an outer layer which protects the substrate from physical and chemical influences.
- WO 96/28610 discloses applying a liquid polyurethane composition to a fibrous substrate to form a protective coating.
- the application US 2004/0023008 A1 discloses a security paper for the manufacture of banknotes.
- the paper comprises a fibrous substrate which is coated on at least one of its faces with a transparent or translucent protective layer comprising colloidal silica and at least one transparent or translucent elastomeric binder comprising, for example, polyurethane.
- the publication WO 2008/054580 A1 discloses a method for imparting to a fibrous substrate a resistance to moisture and soiling, comprising impregnating the substrate on two opposite sides with an aqueous composition comprising one or more thermoplastic resins.
- EP 815 321 B1 discloses a paper for the manufacture of banknotes, an aqueous polyurethane dispersion having been deposited on the fibrous substrate, this polyurethane dispersion being free of charges and transparent.
- EP 1 783 273 discloses an improved durability security paper, a fluororesin-containing composition having been surface-applied.
- WO 2012/156904 A1 discloses a sheet coated with an external printability layer based on polyurethane.
- optical structures having a non-planar face such as lenticular networks.
- the Motion ® security thread marketed by the company Skull is such an example of microlens network security element, used in the field of banknotes. This thread generates an image that moves when the note is tilted.
- transparent protective coatings on an optical structure composed of a microlens array degrades the sharpness and clarity of the image produced by the optical structure.
- a transparent material such as a varnish, with a refractive index greater than that of the ambient air, modifies the path of the light radiation between the outside and the lenses. The image appears blurred and poorly defined. Blurring the Motion ® safety wire with a varnish type protective coating is a well-known phenomenon.
- more and more secure document substrates such as banknotes, incorporating a security element type lenticular network, are covered with a protective transparent coating, before or after printing of this substrate.
- cotton-based papers for banknotes not only increasingly include security threads with a lenticular optical structure introduced at the beginning of papermaking, but are also covered with one or more layers of paper.
- transparent anti-fouling protective coating at the end of manufacture as mentioned above.
- the security threads are for example unwound at the machine head between two jets of cotton fibers, which constitute the paper substrate after their meeting in the wet phase. Security threads usually appear in windows.
- the coating is then applied in the aqueous phase at the end of the machine, on the almost dry paper. Without particular precautions when applying the coating, the visual effect brought by the security thread is degraded on such coated papers.
- the simplest method to avoid this blurring phenomenon is to not apply the coating to the surface of the lenticular optical structure security element by creating reserves during the application, that is to say by delimiting '' physically '' uncovered areas.
- Another method is to reduce as much as possible the amount of coating deposited on the entire paper substrate and security element.
- the main disadvantage is a decrease in the protection of the paper, while the image produced by the lenticular structure still loses sharpness.
- WO 2012/153114 A1 teaches making a metallic and / or diffractive security thread with first regions making it possible to improve the formation of bonds hydrogen with the papermaking substrate, and between these first regions to apply a hydrophobic varnish to prevent the deposition of the pulp.
- the aim of the invention is to reduce the blurring of an optical structure of a security element by a transparent coating in an aqueous phase, such as a protective varnish, usually applied to the paperboard substrate for banknotes.
- the invention fulfills this objective by means of a method for processing a secure document security element, in particular a security element in the form of a security thread, the security element comprising on one side at least one optical structure, this method comprising the step of continuously treating said element so as to increase the hydrophobicity of said face.
- the security element is not processed in sections that alternate with untreated sections.
- the treated area is thus both in the windows and between the windows, and extends from one edge of the document to the opposite edge, all along the element of security.
- the material which prevents or reduces the deposit is therefore a protective coating applied in aqueous phase on the substrate and the security element, and not the paper pulp, contrary to WO 2012/153114 A1.
- the optical structure is preferably transparent.
- the optical structure is preferably non-planar.
- the optical structure is preferably refractive, and comprises for example a lenticular array. If necessary, the optical structure can be reflective, diffractive and / or diffusing.
- the invention is particularly suitable for online processing of the security element.
- the treatment can cause the contact angle of the water on said face to increase by at least 10 °.
- the treatment can in particular bring the contact angle of the water on said face to a value greater than or equal to 90 °.
- the treatment preferably comprises the application of a hydrophobic composition on said face.
- the applied composition advantageously has a pearling activity.
- the expected hydrophobicity level of the composition applied to the treated face, or even the treated faces, of the security element is sufficiently high to greatly reduce the wetting of said surface by water and / or the aqueous phase preparation of the protective coating. It is in particular to induce on the said surface the formation of water droplets and / or the aqueous phase preparation of the protective coating, the number and spread of which is, however, as small as possible.
- the composition is preferably non-volatile, preferably non-polymeric.
- the term "non or little" means that the composition forms a discontinuous surface deposit on the security element, the composition forming, for example, a two-dimensional network comprising cells that are devoid of composition, and / or preferably islets. or isolated clusters, for example in the form of droplets or platelets of composition. This makes it possible not to unduly disturb the interface between the optical structure and the ambient air.
- the composition deposition, after drying, thus preferably covers less than 100% of said face, better less than 50%, and even better less than 25%.
- the amount of composition applied, in dry weight is preferably from 0.05 to
- the hydrophobic composition advantageously comprises one or more hydrophobic compounds.
- This or these hydrophobic compounds are preferably chosen from:
- waxes in particular containing the following chemical compounds:
- the treatment composition preferably comprises at least one wax, and more preferably a paraffin wax, which may be in the form of an emulsion.
- the composition can be applied by spraying, roller transfer, gravure, flexography, screen printing or dip-wipe processes.
- a treatment composition constitutes a preferred solution for protecting said face vis-à-vis the coating subsequently deposited
- said face can be further treated by grafting including physical, chemical or physico-chemical.
- the latter can be performed by plasma-assisted chemical vapor deposition.
- fluorinated sites are then grafted on said face.
- the processing of the security element is preferably performed before it is integrated with a substrate of the secure document.
- the invention is particularly suitable for processing a security element in the form of a security thread.
- the invention also relates to a treatment composition of a security element, for the implementation of the method according to the invention, comprising at least one hydrophobic compound, and having a beading activity.
- This composition may be water-based.
- the invention also relates to a method of manufacturing a secure document, wherein incorporating a security element as obtained by the implementation of the method on or in a substrate of said document.
- This method may comprise the application on an entire face of the substrate, on which said face of the optical structure of the security element is visible, an aqueous protective coating, in particular transparent.
- the security element can be, in the application of this coating, in the form of a security wire integrated window (s).
- the invention also relates to a security element as such, in particular treated according to the method defined above.
- This security element can be characterized, according to one aspect of the invention, in that it has a discontinuous deposit, on a non-planar face of an optical structure, of a residue of hydrophobic composition, preferably a wax . In this case, too, there is talk of a deposit that is not very or not homogeneous.
- the amount of residue of composition being preferably between 0.05 and 0.5 g / m 2 . This residue can cover less than 50%, better than 25%, of the face of the optical structure.
- FIG. 1 shows schematically in longitudinal section, a security element according to the invention.
- the security element according to the invention may be in the form of any element introduced into the document substrate or on its surface.
- window thread a security thread introduced in window (s)
- foil that is to say a film applied by transfer to the surface of the paper, of a patch, a lamination tape, a protective film.
- the security element may be a security thread introduced in the round shape or on the flat table forming the paper, either directly in a jet (fibrous layer) wet, or between two wet jets.
- the treatment of the security element can be reflected, on the surface thereof, by a quantifiable hydrophobia by measuring the contact angle of the water according to the standards.
- the contact angle on the visible face of the optical structure is thus preferably greater than or equal to 90 °.
- the treatment may also result in the presence of a treatment composition residue on the treated side of the security element.
- This residue is preferably arranged other than in the form of a continuous film.
- the security element may comprise other first, second or third level security means.
- thermochromic or thermochromic compounds dyes and / or pigments, in particular in printed form or mixed with at least one constituent layer of the security element
- UV absorber especially in the form coated or mixed with at least one constituent layer of the security element
- an automatically readable security having specific and measurable luminescence characteristics (eg fluorescence, phosphorescence), light absorption (eg ultraviolet, visible or infrared), Raman activity, magnetism, micro interaction wave, X-ray interaction or electrical conductivity.
- luminescence characteristics eg fluorescence, phosphorescence
- light absorption eg ultraviolet, visible or infrared
- Raman activity e.g magnetism, micro interaction wave, X-ray interaction or electrical conductivity.
- the security element When the security element is in wire form, its width is for example between 1 and 10 mm and its thickness between 10 and 100 ⁇ .
- the security element may comprise a thermoplastic support film, in particular polyester or polyester terephthalate.
- the optical structure may cover only one side of this support film, or alternatively may be provided on both sides of the support film.
- the optical structure of the security element is preferably a refractive optical structure, comprising one or more micro lenses. It may be a network of microlenses and / or one or more Fresnel lenses.
- the optical structure may comprise spherical or aspherical micro-lenses, in the form of a bidirectional network.
- the micro lenses may have a hexagonal base or other shape.
- FIG. 1 represents in longitudinal section an example of a security thread incorporating a non-planar optical structure 1 formed by a micro-lens array.
- This wire is shown inserted with windows 3 in a papermaking substrate 2.
- the windows 3 are separated by bridges 8.
- microlenses 9 produce through the windows 3 an enlarged image of micromotives 4, these being for example located at the focus of the micro lenses.
- the optical structure 1 then has a non-planar face which is defined by the set of convex faces of the microlenses.
- the local variation of the thickness of the security element, related to the relief provided by the non-planar optical structure, may be greater than or equal to 5 ⁇ .
- the non-planar face 5 of the security thread, partially visible through the windows 3, is treated according to the invention, for example by a hydrophobic composition with beading activity.
- Solid residues 6 of composition can thus be present on the face 5.
- the thickness of these residues is, for example, less than or equal to 1 ⁇ .
- the residues 6 are present not only in the windows 3 but also under the bridges 8 between the windows 3.
- the optical structure 1 may be made of thermoplastic material or may have been crosslinked by UV radiation, for example.
- the optical structure 1 may be formed by embossing a polymer layer, by molding, printing, machining or etching.
- the invention makes it possible to make the apparent face of the optical structure physico-chemically incompatible with the protective coating in aqueous phase subsequently applied to the document substrate and the security element. This makes it possible to limit the deposition of the coating on said face, and to reduce the blurring by said coating of the images produced by the optical structure.
- the result of the implementation of the treatment method disturbs the wetting and spreading of the aqueous protective coating, following the modification of the surface tension of said face of the optical structure.
- the composition forms individual clusters, or covers less than 100%, preferably less than 50% and more preferably less than 25%, of said face of the optical structure.
- the security element is a security thread incorporated in window (s) in a wet fibrous substrate
- this characteristic offers a compromise between repelling the subsequent coating layer to avoid blurring of the optical structure and the It is advantageous to allow the fibrous suspension to be deposited at the bridges between the windows in order to strengthen the adhesion of the fibers of the paper to the wire.
- the property of hydrophobicity and the beading activity induced by the treatment are not excessive so as not to significantly disturb the formation of paper mill bridges.
- the treatment does not generate residues of significant thickness at the surface of the security element.
- the thickness of the composition deposit on said face, after drying, is preferably less than or equal to 5 ⁇ , more preferably 1 ⁇ , being especially between 0.1 ⁇ and 1 ⁇ .
- the security element may be either pretreated at the manufacturer of the security element or at the manufacturer of the secure document substrate prior to incorporation.
- the security element for example the security thread, can be pretreated directly at the head of the paper machine, at the time of uncoiling the wire.
- the security element when constituted by a security thread, may be treated by continuous application by a process of spraying, roller transfer, gravure printing, flexography, screen printing or dipping-wiping.
- the composition at least on the relevant face of the optical structure. This application preferably takes place over the entire width of the security element.
- the security element can pass through a drying device, for example under an infrared irradiation ramp (IR) or in a tunnel traversed by a flow of hot air, to evaporate the water or the solvent from the composition, before incorporation into the substrate.
- a drying device for example under an infrared irradiation ramp (IR) or in a tunnel traversed by a flow of hot air, to evaporate the water or the solvent from the composition, before incorporation into the substrate.
- IR infrared irradiation ramp
- the treatment composition may be water-based.
- the treatment composition preferably comprises at least one hydrophobic compound. It may be a compound in emulsion, suspension, or dispersion, in a solvent such as water.
- an emulsion paraffin wax is used.
- Other hydrophobic chemical compounds, including pearling effect, can be applied to the structure, replacing an emulsion paraffin.
- polyolefins such as PE or PE
- Acrylic in particular containing butyl or hexyl links
- Fluorinated for example PTFE or PVDF
- polymers are mainly delivered in emulsion, suspension, or dispersion in an aqueous phase or organic solvent. They are used in formulations which may contain other polymeric resins, rheology agents, fillers and / or surface additives.
- the total mass content of hydrophobic compound (s) in the composition is preferably between 10 and 100% of the total weight of dry matter.
- the composition may comprise an adhesive, in particular based on thermoplastic or thermo-activatable polymers, in order to help the adhesion of the fibrous bridges to the surface of the security element.
- the adhesive must be sufficiently hydrophobic in nature, otherwise not too hydrophilic, so that the final composition retains sufficient hydrophobicity.
- PECVD Plasma-Enhanced Chemical Vapor Deposition
- compositions of the examples below are applied to the laboratory on the optical side of a safety thread Micro-lenticular structure Motion® of the company CRANE.
- compositions are made with different degrees of dilution of the hydrophobic compound to vary the amount of dry active material deposited on the surface of the microlenses.
- Example 1 (the contents are expressed by weight relative to the total weight of the composition):
- Example 1 ** Commercial emulsion of Example 1 diluted to 200% by adding 200 g of water to 100 g of wax emulsion, ie 11.6% dry.
- Example 1 diluted to 400% by addition of 400 g of water and 100 g of wax emulsion, ie 5.0% dry.
- the composition of each of Examples 1 to 3 is applied to the smooth bar on the non-flat upper face of the security thread, itself fixed on blotting paper absorbing the excess composition. Then the wire is dried in a ventilated oven at 130 ° C.
- the amount of composition deposited on the upper face of the security thread is large enough to induce a strong beading effect, but not too excessive so as not to generate itself a phenomenon of blur.
- This amount of composition which is determined so as to obtain an optimum compromise, is preferably between 0.05 g / m 2 and 0.5 g / m 2 .
- the security threads are embedded in PVA coated note paper by rolling at 140 ° C.
- An aqueous protective coating for THD paper of the Applicant based on polyethylene (PE).
- Polyurethane (PU) based aqueous protective coating for HD paper of the Applicant Polyurethane (PU) based aqueous protective coating for HD paper of the Applicant.
- composition 3 Composition 2 Composition 1
- the image transmitted by the micro lens array appears much clearer and more defined.
- the notation quantifying the sharpness of the image thus passes on average from 3.0 to 4.5 in the case of the coating 1 for paper THD and from 2.5 to 5.0 with the coating 2 for HD paper, respectively because of the hydrophobic compositions 2 and 3 at the surface of the Motion ® security thread.
- composition 2 for the protective coating 1
- composition 3 for the protective coating 2.
- Example 4 (the contents are expressed by weight relative to the total weight of the composition):
- Example 1 diluted to 400% by adding 400 g of water to 100 g of wax emulsion, ie 7.0%> sec.
- Example 1 Commercial emulsion of Example 1 diluted to 1400% by adding 1400 g of water to 100 g of wax emulsion, ie 2.3% dry.
- Example 1 Commercial emulsion of Example 1 diluted to 2400% by addition of 2400 g of water and 100 g of wax emulsion, ie 1.4% dry.
- each of Examples 4 to 6 is applied by means of a foam-shaped foam roller to the non-planar upper face of the security thread, itself fixed on blotting paper absorbing the excess composition. Then the wire is dried in a ventilated oven at 130 ° C. The contraction of drops of water deposited on the wire after drying shows that a beading effect has been generated on the surface of the wire thus pretreated.
- the amount of composition deposited on the upper face of the security thread is large enough to induce a strong beading effect, but not too excessive so as not to generate itself a phenomenon of blur.
- This amount of composition which is determined so as to obtain an optimum compromise, is preferably between 0.05 g / m 2 and 0.5 g / m 2 .
- the security threads are embedded in PVA coated note paper by rolling at 100 ° C.
- the two different water-based transparent protective coatings were applied to the secure substrate in a glue press using rollers.
- the two rolls of the gluing press are covered with a rubber envelope. Drying of the transparent protective coating in aqueous phase is carried out at 130 ° C. in forced convection for 3 min.
- Polyethylene (PE) based aqueous protective coating for THD paper of the Applicant PE based aqueous protective coating for THD paper of the Applicant.
- Polyurethane (PU) based aqueous protective coating for HD paper of the Applicant Polyurethane (PU) based aqueous protective coating for HD paper of the Applicant.
- the sharpness of the images of the Motion ® micro-lenticular structure security threads covered by the coatings 1 and 2 is evaluated according to the implementation, or not, of a pretreatment with the compositions of Examples 4 to 6.
- composition 6 Composition 5 Composition 4
- the image transmitted by the microlens array then appears much clearer and more defined.
- the notation quantifying the sharpness of the image thus passes on average from 2.0 to 4.0 in the case of the coating 1 for paper THD and from 1.5 to 3.5 with the coating 2 for HD paper, in both cases because of the hydrophobic composition 5 at the surface of the Motion ® security thread.
- composition 5 for protective coatings 1 and 2.
- the fact that the security element undergoes a treatment in the invention to be made more hydrophobic can be used to authenticate the element.
- the invention thus also relates to a method for authenticating a security element according to the invention, in which the contact angle of the water is measured on the non-planar face of the optical structure and / or the the presence on said face of a discontinuous deposit formed by a residue of hydrophobic composition is detected, and the authenticity of the element is determined at least on the basis of this measurement and / or detection.
- the counterfeiting is for example detectable by combining the observation of the security element and the measurement of physicochemical properties thereof.
- the invention is applicable to other refractive optical structures.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15820482T PL3233514T3 (pl) | 2014-12-19 | 2015-12-17 | Sposób obróbki elementu bezpieczeństwa |
SI201531475T SI3233514T1 (sl) | 2014-12-19 | 2015-12-17 | Postopek za obdelavo varnostnega elementa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1463031A FR3030363B1 (fr) | 2014-12-19 | 2014-12-19 | Procede de traitement d’un element de securite comportant une structure optique ayant une face non plane |
PCT/EP2015/080303 WO2016097187A1 (fr) | 2014-12-19 | 2015-12-17 | Procede de traitement d'un element de securite |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3233514A1 true EP3233514A1 (fr) | 2017-10-25 |
EP3233514B1 EP3233514B1 (fr) | 2020-12-16 |
Family
ID=53491563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15820482.6A Active EP3233514B1 (fr) | 2014-12-19 | 2015-12-17 | Procede de traitement d'un element de securite |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3233514B1 (fr) |
ES (1) | ES2846812T3 (fr) |
FR (1) | FR3030363B1 (fr) |
HU (1) | HUE053447T2 (fr) |
PL (1) | PL3233514T3 (fr) |
SI (1) | SI3233514T1 (fr) |
WO (1) | WO2016097187A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019129964A1 (de) * | 2019-11-06 | 2021-05-06 | Bundesdruckerei Gmbh | Sicherheitsdokument mit Oberflächenbeschichtung auf Basis von Nanomaterialien |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2668507B1 (fr) | 1990-02-09 | 1996-06-21 | Arjomari Europ | Feuille pour documents de securite, ayant une imprimabilite elevee en meme temps qu'une resistance a la circulation elevee. |
HU221440B (en) | 1995-03-13 | 2002-10-28 | Portals Ltd | Security paper |
FR2814476B1 (fr) | 2000-09-11 | 2003-04-11 | Arjo Wiggins Sa | Feuille de securite comportant une couche transparente ou translucide |
US7221512B2 (en) | 2002-01-24 | 2007-05-22 | Nanoventions, Inc. | Light control material for displaying color information, and images |
DE10327083A1 (de) | 2003-02-11 | 2004-08-19 | Giesecke & Devrient Gmbh | Sicherheitspapier und Verfahren zur Herstellung desselben |
DE102005052672A1 (de) | 2005-11-04 | 2007-05-10 | Giesecke & Devrient Gmbh | Harzimprägniertes Sicherheitspapier |
BRPI0711639A2 (pt) | 2006-05-12 | 2012-01-17 | Crane & Co Inc | estrutura de filme micro-ótica que sozinha ou junto com um documento ou rótulo de segurança projeta imagens espacialmente coordenadas com imagens estáticas e/ou outras imagens projetadas |
US7764996B2 (en) | 2006-10-31 | 2010-07-27 | Cardiac Pacemakers, Inc. | Monitoring of chronobiological rhythms for disease and drug management using one or more implantable device |
EP2042577A1 (fr) * | 2007-09-20 | 2009-04-01 | Agfa-Gevaert | Stratifiés de sécurité avec hologramme de polymère gaufré transparent interlaminaire |
WO2012153114A1 (fr) | 2011-05-06 | 2012-11-15 | D W Spinks (Embossing) Limited | Dispositif de sécurité fenêtré |
FR2975408B1 (fr) | 2011-05-18 | 2020-10-23 | Arjowiggins Security | Feuille a haute durabilite pour la fabrication de billets de banque |
US9289962B2 (en) * | 2011-05-20 | 2016-03-22 | 3M Innovative Properties Company | Laser-personalizable security articles |
-
2014
- 2014-12-19 FR FR1463031A patent/FR3030363B1/fr active Active
-
2015
- 2015-12-17 HU HUE15820482A patent/HUE053447T2/hu unknown
- 2015-12-17 PL PL15820482T patent/PL3233514T3/pl unknown
- 2015-12-17 SI SI201531475T patent/SI3233514T1/sl unknown
- 2015-12-17 WO PCT/EP2015/080303 patent/WO2016097187A1/fr active Application Filing
- 2015-12-17 EP EP15820482.6A patent/EP3233514B1/fr active Active
- 2015-12-17 ES ES15820482T patent/ES2846812T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
ES2846812T3 (es) | 2021-07-29 |
FR3030363B1 (fr) | 2022-05-13 |
SI3233514T1 (sl) | 2021-02-26 |
WO2016097187A1 (fr) | 2016-06-23 |
FR3030363A1 (fr) | 2016-06-24 |
HUE053447T2 (hu) | 2021-06-28 |
EP3233514B1 (fr) | 2020-12-16 |
PL3233514T3 (pl) | 2021-05-31 |
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