• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    The invention relates to a method of manufacturing a multilayer data carrier having reflective metallised inscriptions (23) visible from at least one outer face (11). Printing on a transparent printing layer (21) a basic pattern (24) chosen to be able to receive said inscriptions (23), be transparent, and have a surface tension greater than 40 dynes / cm and a smooth surface state specular reflection greater than 50% measured according to ISO 2813 with an angle of 60 °, and no glass transition temperature in the lamination temperature range; then prints said inscriptions (23) in contact with said pattern (24) base, then carries out the hot lamination and under pressure of a stack comprising the layer (21) of printing.
    公开号:FR3022181A1
    申请号:FR1455407
    申请日:2014-06-13
    公开日:2015-12-18
    发明作者:Eric Philippe；Laurence Bes；Anthony Gallo
    申请人:Fasver SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a method of manufacturing a multilayer data carrier by hot and pressure lamination of a stack of a plurality of superimposed layers comprising at least one of a plurality of multilayered data layers. at least one layer of at least one thermoplastic material, said multilayer data carrier having inscriptions, said reflective metallized indicia, having a metallic appearance, at least partially reflecting, and visible from at least one outer face of the multilayer data carrier said hot lamination being carried out in a temperature range, referred to as the lamination temperature range. It extends to the support thus obtained, to its use for the production of an official document, and to an official document thus obtained. Official documents are documents which, by reason of their nature and / or the rights they may confer, must be protected against falsification and / or counterfeit attempts and / or to guarantee authentication and / or to guarantee their integrity (that is, they have not been altered or modified). This may include: passports, visas, identity cards, driving licenses, gray cards, bank cards, loyalty cards, bank checks, diplomas, certificates, tickets, access control cards, badges, labels, legal acts, contracts, legal registers, cadastral plans, fiduciary documents, banknotes, production plans or other plans ... Official documents bear inscriptions, such as variable personalization mentions (name, surname, address , photo, signature ... of a holder or parties ...) and / or common mentions (security reasons, matrices, frames, field names, seals, 25 holograms, signatures, values, ...). Throughout the text, "inscription" means any sign or pattern made on a layer of a document that can be read by humans and / or by machine (OCR), at least under certain conditions (especially under normal lighting conditions). in visible light, and / or under specific lighting, and / or after activation of an electronic device (screen) or other ...). This may include, in particular, variable personalization information (name, civil status, photograph, value, dates, etc.) of an official document or of common and / or safety information; texts (manual writing or printed characters); codes (ASCII, universal codes with optoelectronic readings such as barcodes ...); holograms, drawings, images or photographs; Tasks or flat areas ... Official documents usually contain inscriptions, called security inscriptions, to prevent or make very complex their reproduction or falsification. These security inscriptions may be of the type visible in the visible range by simple observation with the naked eye (first level security); or of the type that can be controlled by a specific device such as an ultraviolet lamp (second-level security); or type that can be controlled only in a certified laboratory (third-level security). Throughout the text, "paper" means any sheet obtained by wet process using a suspension of natural cellulose fibers and / or mineral fibers and / or plant fibers and / or polymeric synthetic fibers other than cellulose, which can contain various fillers and additives as used in stationery. The term "synthetic paper" refers to any paper comprising polymeric synthetic fibers other than cellulose. Throughout the text, the expression "optically superimposed" designates layers or portions of layers disposed opposite one another so that a light beam passing through one of them crosses the others. Two such layers or portions of optically superimposed layers can be physically superimposed in contact with each other, or separated by layers or portions of interlayers.
    [0002] Throughout the text, the expression "at least substantially" indicates, in the usual way, that a characteristic, structural or functional, should not be taken as marking an abrupt discontinuity, which would have no physical meaning, but covers not only this structure or function, but also slight variations of this structure or function which produce, in the technical context considered, an effect of the same nature, if not of the same degree. Furthermore, the expressions "comprising / including one" are synonymous with "comprising / comprising at least one". Many official documents such as bank cards, identity cards, driving licenses, personal access cards to sites or public transport, passport sheets, customs cards, visas, fiduciary documents, banknotes. are formed of multilayer data support obtained by hot lamination of a plurality of layers of at least one material selected from the group of thermoplastic materials and synthetic papers, comprising at least one layer of at least one thermoplastic material. In particular, many official documents are formed by hot lamination (typically of the order of 150 ° C to 200 ° C) and under pressure (typically of the order of 106 Pa to 2.106 Pa) of a plurality of polycarbonate layers, a material that also offers numerous advantages in these applications (rigidity, durability, ease and reliability of markings (variable inscriptions, safety reasons, etc.), possibility of marking by laser radiation, etc.). From the industrial point of view, it is important to be able to manufacture these multilayer data carriers in large series, by incorporating in them all the safety inscriptions during the hot and pressure lamination and avoiding multiple successive steps and the use of complex and expensive tools. However, the possibilities offered with regard to the safety inscriptions with the data carriers manufactured by hot and pressure lamination are limited by several constraints: - when the safety markings are made before the hot and press lamination, they must themselves be resistant to said hot and press lamination and not affect its result; - it is possible to carry out certain safety inscriptions during the hot and pressure lamination, by specific preliminary steps and / or with specific tools; but for the realization of reflective metallized inscriptions, this solution is extremely expensive (vacuum metal deposition); moreover the patterns that can be made are relatively coarse, and therefore easily reproducible by counterfeiters. The need arises to be able to incorporate reflective metallic security markings, in particular that can be colored, to form first or second level security on such multilayer data carriers intended to form official documents. Such inscriptions that are both metallized and reflective are, on the one hand, complex to achieve because of their metallized nature, and, on the other hand, not reproducible by simple optical scanning (for example by scanning or photocopying) because of their reflective nature. WO2010 / 125316 discloses a metallized film and its method of manufacture using a metallized ink composition printed on a layer having specific surface characteristics. However, it turns out that the use of such a reflective metallized ink composition to form such security inscriptions on a layer of a multilayer data carrier having the specific surface characteristics required by this document does not allow to obtain satisfactory results: after the operation of hot lamination and under pressure, the reflective metallized inscriptions completely lose their reflective effect, and / or are deformed and / or has a thickening of the width of the line.
    [0003] The invention therefore aims to overcome these disadvantages by proposing a method of manufacturing a multilayer data carrier laminated hot and under pressure, and a data carrier thus obtained, incorporating reflective metallized markings. The invention aims more particularly to allow the realization of reflective metallized inscriptions, at least a portion of which has a line width of less than 500 μm, capable of forming first-level safeties (mini-impressions that can be discerned at naked) or second-level security (micro-impressions with a line width less than 200! am not discernible to the naked eye, requiring a magnifying instrument such as a magnifying glass). More particularly, the invention aims to allow the realization of reflective metallized inscriptions chosen from guilloche, patterns of fine lines, and raster images. To this end, the invention relates to a method of manufacturing a multilayer data carrier by hot and pressure lamination of a stack of a plurality of superimposed layers comprising at least one layer of at least one thermoplastic material, said multilayer data carrier having inserts, said reflective metallized indicia, having a metallic appearance, at least partially reflecting, and visible from at least one outer face of the multilayer data carrier, said hot lamination being performed within a range of of temperature, said lamination temperature range, characterized in that: - a so-called printing face of said at least one layer, called said transparent printing layer, of said stack is printed on with a varnish composition according to a pattern, said basic pattern, chosen to be able to receive said reflective metallized markings, said composition of ve It is chosen, after curing, to be transparent and have: a surface tension greater than 40 dynes / cm and a smooth surface with a specular reflection greater than 50%, measured according to ISO 2813 with an angle of 60 °, No glass transition temperature in the lamination temperature range, said reflective metallized markings are printed in contact with said base pattern of said printing layer with a metallized ink composition comprising a curable binder incorporating discrete particles, said reflective metallized particles, in the general form of platelets dispersed in the curable binder with a particle size chosen to form pigments having an at least partially reflective metallic appearance, and then forming said stack comprising said printing layer, said face of said impression being opposite to said external face and appliq With said reflective metallized markings in contact with another adjacent layer of the stack, the hot and press lamination of this stack is carried out. The invention also extends to a multilayer data carrier obtained by a method according to the invention. It therefore also relates to a multilayer data carrier comprising a plurality of layers superimposed by hot lamination and under pressure in a temperature range, called the lamination temperature range, comprising at least one layer of at least one thermoplastic material, said support of multilayer data having inserts, said reflective metallized indicia, having a metallic appearance, at least partially reflecting, and visible from at least one outer face of the multilayer data carrier: characterized in that said reflective metallised inscriptions: - are formed of a printed metallized ink comprising a cured binder incorporating discrete particles, referred to as reflective metallized particles, generally in the form of platelets dispersed in the binder with a particle size forming pigments having an at least partially reflective metallic appearance - are printed in contact with a basic pattern printed on a transparent layer, called the printing layer, said basic pattern being formed of a transparent varnish having: a surface tension greater than 40 dynes / cm and a mirror-like surface smoothness greater than 50%, measured according to ISO 2813 with an angle of 60 °, no glass transition temperature in the lamination temperature range. Surprisingly, it is found that choosing a varnish composition having no detectable glass transition temperature (in particular by differential thermal analysis) in the lamination temperature range to form a base pattern receiving the reflective metallized markings. , makes it possible to make reflective metallized inscriptions of very high quality, which can be extremely fine, especially with a line width of less than 200 μm, for example of the order of 100 μm to 150 μm, without the latter being do not lose their fineness and quality, nor their reflectivity nor their metallic appearance after the hot and pressure lamination used to form the multilayer data carrier. Thus, advantageously and according to the invention at least a part of said reflective metallized inscriptions is printed with a line width of less than 500 [one-especially less than 200 μm-for example of the order of 100 μm to 150 μm. In particular, at least a portion of the reflective metallized markings comprise patterns selected from guilloche patterns, line patterns and raster images. Of course, nothing prevents the printing of reflective metallized markings according to the invention with a greater line width, for example in the form of drawings, or flattening on a surface portion of the printing face, or even on the whole of the latter. In addition, advantageously and according to the invention, the reflective metallized markings are printed on the base pattern with a peripheral edge of the base pattern with respect to the reflective metallized markings -particularly between 0.5 mm and 3 mm, for example the order of 2 mm- around said reflective metallized markings. Said printing layer protects reflective metallized markings from the external environment. In particular, in certain advantageous embodiments, the printing layer constitutes an outer multilayer data support layer, forming said outer face of the latter.
    [0004] Furthermore, advantageously and according to the invention, a printing layer of material chosen from the group of transparent thermoplastic materials is used.
    [0005] More particularly, advantageously and according to the invention is used a printing layer of material selected from the group of transparent polycarbonates, transparent polyesters, and transparent PVC. Further, advantageously and according to the invention, said base pattern is printed with a varnish composition selected from the group of UV-cured acrylic clearcoats and volatile solvent-based clearcoats containing acrylic binder and at least one agent. hardener. This varnish composition is also selected to be compatible with the printing layer, and with the adjacent layer on which the printing layer is applied before and during hot and press lamination. Furthermore, advantageously and according to the invention to achieve the printing of the reflective metallized markings is used a metallized ink composition comprising reflective metallized particles selected from vacuum metallized pigments and reflective metal particles. Advantageously, and according to the invention, a metallised ink composition comprising reflective metallized particles having an average particle size of between 8 μm and 11 μm is used. Any printing technique may be used to print the base pattern and / or the reflective metallized markings, especially selected from screen printing, gravure printing, flexography, offset printing, or the like. In certain advantageous embodiments a multilayer data carrier according to the invention is formed of layers of at least one material selected from the group of thermoplastic materials and synthetic papers. In particular, a multilayer data carrier according to the invention may advantageously be formed by hot and pressure lamination of a plurality of layers made of a thermoplastic material chosen from polycarbonates, PVC, synthetic papers, their mixtures and their associations. The invention extends to an official document comprising a data carrier according to the invention, in which at least one external face has reflective metallized markings-in particular reflective metallized markings conforming to at least one of the characteristics mentioned above or following post. An official document according to the invention may in particular be chosen from the group consisting of passports, passport sheets, customs cards, visas, identity cards, driving licenses, vehicle registration cards (cards gray cards), bank cards, loyalty cards, bank checks, diplomas, certificates, tickets, access control cards, badges, labels, legal documents, contracts, registers legal documents, cadastral plans, fiduciary documents, banknotes, packaging and production plans. The invention also relates to a manufacturing method, a data carrier and an official document characterized in combination by all or some of the characteristics mentioned above or below. Other objects, features and advantages of the invention will appear on reading the following description of various embodiments of the invention given in a non-limiting manner and which refers to the appended figures in which: FIGS. 1b are diagrammatic cross-sectional views of a printing layer of a multilayer data carrier according to the invention respectively at the end of two steps of printing a base pattern and reflective metallized markings. FIG. 2 is a schematic sectional view of a multilayer data carrier according to the invention at the end of the hot and press-lamination step of a process according to the invention. FIG. 3 is a diagrammatic view from above of an exemplary data carrier according to the invention. In the figures, the scales and the relative dimensions are not respected, for purposes of illustration. In particular, the thicknesses are exaggeratedly enlarged.
    [0006] FIG. 2 represents an exemplary data carrier 10 according to the invention after a hot and press-lamination step and ready for use in order to be able to be laser-marked for personalization in view of obtaining an official document according to the invention. This data carrier 10 is formed of a stack of a plurality of layers superimposed on each other and having been hot-lamination under pressure. The majority of the layers is preferably formed of a thermoplastic material, in particular chosen from polycarbonates, PVCs, polyesters (polyethylene terephthalate PET, polyethylene terephthalate glycol PETG), and coextruded films of polyester and polycarbonate (PEC) . In some advantageous embodiments, particularly for applications such as bank card, identification card or transport card, the data carrier 10 is formed of a plurality of polycarbonate layers. Nothing prevents the data carrier incorporates layers of different materials, including layers in a material other than a thermoplastic material, for example paper, more particularly synthetic paper. The total number of layers constituting a data carrier according to the invention is of no importance in the context of the present invention. The data carrier 10 is in the general form of a sheet or a card and therefore has two opposite outer planar faces, and a relatively small thickness. In all the following, only a main face, said outer face 11, is described and has the characteristics of the invention, it being understood that the other external main face may equally well have the same characteristics, or on the contrary present of other characteristics. Consequently, it is assumed in the following that the opposite face to the outer face 11 considered is an outer main face of a bottom 12 shown in section 2, without implying any limitation, such a bottom 12 can not not be present and / or being itself constituted of a layer or a plurality of layers more or less thick (s) not described (s) in the present description.
    [0007] In particular the bottom 12 may be formed of at least one layer of thermoplastic material chosen from polycarbonates, PVC, polyesters (polyethylene terephthalate PET, polyethylene terephthalate glycol PETG), coextruded films of polyester and polycarbonate (PEC ), synthetic papers (especially chosen from the paper marketed under the trademark Teslin® by PPG, Monroeville, USA, the paper marketed under the Neobond® trademark by the company Neenah Lahnstein, Lahnstein, Germany, and the paper marketed under the name Polyart® brand by Arjobex, Boulogne, France). Other examples are possible.
    [0008] The outer face 11 of the data carrier 10 has different markings representing information (common mentions) and / or constituting security markings intended to enhance the resistance to forgery attempts and / or to prevent reproduction by optical reading. The data carrier 10 in particular comprises reflective metallized inscriptions 23, namely in the example shown in FIG. 3 a marking 23a in guilloche form, and a marking 23b in the form of a compass rose. Of course, many other examples are possible. In the embodiment shown in FIG. 2, the data carrier 10 comprises from the bottom 12: a base layer 19, which may for example be formed of an opaque white solid surface (contrasting with all the colored markings, dark or optically black superimposed on this base layer 19 on the side of the outer face 11), - a laser marking sublayer 20 sensitive to laser marking radiation, in particular to infrared laser radiation, for example at 1064 nm , So as to allow the production of a personalization marking in at least a portion of the thickness of this laser marking sub-layer 20 under the effect of this laser radiation applied from the outer face 11, layer 21 of transparent printing placed overlapping and in contact with the entire surface of the sublayer 20 laser marking. The outer face 11 is formed by the printing layer 21. The multilayer data carrier 10 is manufactured by hot and pressure lamination of a stack of these different layers, the characteristics of this lamination step being chosen according to the nature and characteristics of the various constituent layers of the stack. For example, in the case where the different layers consist of polycarbonate, the hot and press lamination can be carried out in a lamination press under the following conditions: 1 min of rise at 180 ° C - 12 min at 180 ° C under 30 N / cm 2 - 5 min at 180 ° C under 150 N / cm 2 - cooling at 26 ° C for 17.5 min at 180 N / cm 2.
    [0009] Thus, this hot and press lamination has a lamination temperature range of between 20 ° C and 180 ° C. Of course many other values and conditions for hot lamination and under pressure are possible. The laser marking underlayer 20 may extend as a continuous flat surface in the format of the outer face 11 (with the exception of any peripheral shrinkage); or on the contrary be applied as a plurality of separate and disjoint portions, at least opposite locations to receive a laser marking, or only opposite these locations. It may be formed of a thickness of a varnish printed with an ink composition incorporating a marking agent sensitive to laser radiation and / or be chosen from commercialized films ready to be laser-marked, for example a film marketed under Makrofol® ID 6-2 laserable by Bayer Materials Science, Leverkusen, Germany.
    [0010] The reflective metallized inscriptions 23 are produced by printing on a transparent base pattern 24 itself printed on the printing layer 21 incorporated in a stack of layers used to form the multilayer data carrier 10 by hot and pressure lamination.
    [0011] The printing layer 21 may be formed for example of a transparent thermoplastic material, in particular chosen from polycarbonates, PVCs, polyesters (PET polyethylene terephthalate, polyethylene terephthalate glycol PETG), and coextruded polyester and polyester films. polycarbonate (PEC). The same is true of the various other layers constituting the multilayer data carrier 10. The method of manufacturing the data carrier of Figure 2 comprises the following successive steps. In the first step shown in FIG. 1a, a transparent base pattern 24 is printed on one, called the printing face 22, of the two faces of the printing layer 21, with shapes and dimensions selected so as to be able to receive fully reflective metallized markings 23. Preferably, and taking into account the fact that the basic pattern 24 must have a peripheral flange 26 around the reflective metallized markings 23, the latter may be produced in the form of lines of small width, in particular micro-impressions, the pattern 24 The base material is preferably printed in the form of at least one solid area in the format of an envelope outline of each surface area comprising reflective metallized indicia 23. For example, when the reflective metallized markings are guilloche, the transparent base pattern 24 is printed in the envelope outline format of these guilloche with a peripheral overhang around that envelope outline. The base pattern 24 is printed with a lacquer composition for forming a clear topcoat layer having a very smooth, high surface tension surface, i.e., free of surface defects (such as orange peel, fish eyes or pinholes) and adapted to have a surface tension greater than 40 dynes / cm and a smooth surface with a specular reflection greater than 50% as measured in accordance with ISO 2813 with an angle 60 °. Further, a lacquer composition is selected which is free, after curing, of a detectable glass transition by differential thermal analysis in said lamination temperature range. To do this, it is possible to use an ultra-violet or acrylic solvent-based varnish composition having a transparency greater than 90%, which is highly glossy, for example as sold under the reference UVLG6 by the company Marabu (www.marabu-druckfarben). .of). Other examples are possible, since the varnish composition can be printed on the printing face 22 of the printing layer 21, it is transparent, it has the surface state mentioned above. above and no glass transition temperature that can be detected in the lamination temperature range. This layer of transparent varnish forming the base pattern 24 can be tinted and / or cover a tinted varnish layer previously made (not shown in the figures), to modify the metal effect obtained. To do this, it is possible to use an ultraviolet-drying transparent varnish composition as mentioned above in which 1% to 25% of an ultraviolet-drying ink is added, for example a yellow-gold ink as sold by the company Tiflex (Poncin, France) under the reference 3 * 5559. Of course, many other examples are possible. In the second step shown in FIG. 1b, the reflective metallized markings 23 are printed on the smooth face of the base pattern 24. For this purpose, for example, a reflective metallized ink composition is used as indicated, for example, in WO 2010/125316 or US8526086. Thus, a reflective metallized ink composition comprising a charge of reflective metallized particles having a reflective metallic appearance, dispersed in a curable binder composition which may be formed of a conventional transparent printing ink, e.g. transparent solvent ink marketed by Mistral Graphic (Carcassonne, France). The reflective metallized ink layer is printed as a traditional ink layer, on the surface of the lacquer layer forming the surface high voltage base pattern 24 and having a very smooth surface, especially a higher surface tension. at 40 dynes / cm and a smooth surface with a specular reflection greater than 50%, measured according to ISO 2813 with an angle of 60 °. Said charge of reflective metallized particles may incorporate particles in the general form of platelets, for example in the form of petals, chips or shards, which have themselves been previously manufactured by vacuum metallization. Such particles can be obtained by sublimation under vacuum and vaporization of aluminum metal on a support such as a polyester film, the thin aluminum layer obtained then being detached from the support and then ground with the desired particle size, in particular between 8 μm and 10 μm. am and 11! am, with a thickness of the order of 300 angstroms corresponding to that of the deposited aluminum layer. As a variant or in combination, the charge of metallized particles can incorporate metallized particles chosen from the composition of metallized pigments marketed under the reference Xymara Metasheen® by the company Ciba (Basel, Switzerland), and the metallized pigment composition marketed under the reference starbrite® by Silberline (Leven, United Kingdom). These reflective metallized particles are used with a sufficient amount in the printing composition to provide, depending on the printing method used, the desired reflective effect after printing and curing. For example, in the case of screen printing, the amount of charge of metallized particles in the printing composition is between (volume ratio) 5% and 15%, in particular of the order of 10%. Such a layer of metallized ink is reflective and opaque, and may have as such properties similar to those of a vacuum metal deposition. For example, it makes it possible to increase on the order of 80% the optical power reflecting in visible light of the film. It should be noted, however, that the invention makes it possible precisely to adjust the reflection and opacity properties of this layer of reflective metallized ink according to different values, depending on the application. By decreasing the amount of the charge of metallized particles, the reflectivity and opacity of the reflective metallized markings are reduced. On the contrary, by increasing the amount of this charge, one increases the reflexivity and the opacity. To obtain a colored mirror effect of reflective metallized markings, it is possible to use a printing composition comprising a cured binder incorporating at least one dye soluble in organic solvents such as those marketed by CIBA (Basel, Switzerland), referred to as Ciba OROSOL. Without adding colorants to the printing composition comprising the reflective metallized particles, a silver mirror effect is obtained. In order to obtain a gold appearance, dyes of orange-yellow color are used, in order to obtain a chrome appearance, dyes of blue dye are used, in order to obtain a nickel appearance, dyes of green dye are used, in order to obtain a copper appearance dyes are used. orange-red hue. In addition, the reflective metallized particles have average dimensions adapted to allow printing according to the selected printing process, with the required accuracy and quality. Advantageously, the metallized particles have an average particle size of between 8 μm and 11 μm, with, in the case of platelets, a thickness of the order of 300 angstroms. On the other hand, it is found that the printing of a reflective metallized ink layer comprising a charge of reflective metallized particles in the general form of platelets on the surface of the very smooth and high surface tension base pattern 24 causes, despite the small dimensions of these reflective metallized particles, the spontaneous coating of the different particles parallel to the surface, considerably increasing the reflection effect obtained. In this way, for the same optical effect, it is possible to reduce the amount of charge of metallized particles, which facilitates the operations of producing the printing of the reflective metallized inscriptions 23. The reflective metallized inscriptions 23 can be made at least partly with a very great fineness, especially with a line width of less than 500 μm, preferably less than 200 μm, for example of the order of 100 μm. at 150! am. Further, as indicated above, the reflective metallized indicia 23 are printed by providing a peripheral edge 26 of the base pattern 24 around the reflective metallized markings 23, i.e. preferably around a contour of envelope of these. This peripheral flange 26 is for example between 0.5 mm and 3 mm, in particular of the order of 2 mm. The printing of the base pattern 24 and that of the reflective metallized markings 23 can be achieved by any printing technique, for example selected from screen printing, gravure printing, flexography, offset printing, or the like. At the end of this second printing step, a layer formed of the transparent printing layer 21 carrying the base pattern 24 and the reflective metallized markings 23 is obtained as represented in FIG. This layer may be used in a hot and press lamination stack to form the multilayer data carrier, like any other layer of this stack. In the example shown in FIG. 2, the different layers 12, 19, 20, and 21 are stacked one on the other with the laser marking sub-layer 20 interposed between the base layer 19 and the printing layer 21. and hot-rolled and pressurized in a laminating press, the total thickness of the stack decreasing for example by about 10% to obtain the multilayer data carrier as shown in Fig. 2, ready for use to undergo personalization marking by laser radiation.
    [0012] It can be seen that the reflective metallized inscriptions 23 are visible from the outer face 11, through the thickness of the transparent printing layer 21 and through the transparent base pattern 24, with a very aesthetic metallic and reflective effect.
    [0013] The invention makes it possible in particular to dispense with any vacuum metallization step, and the printing layer 21 may be any thermoplastic cover layer of a multilayer data carrier 10, without itself having to have specific surface characteristics (surface tension, surface condition, etc.). It suffices that the printing layer 21 allows the realization of the printing of the base pattern 24 in transparent varnish. EXAMPLE 1 On one of the faces of two sheets of 100% thick polycarbonate of the Makrofol® ID 6-2 brand marketed by Bayer Materials, Leverkusen, Germany, a basic pattern 24 is printed with a transparent varnish marketed under the reference UVLG6 by the company MARABU (France), in the format of the envelope contour of the reflective metallized markings 23 to be produced according to FIG. 3, with an overhang (not visible in FIG. 3, the varnish being transparent) 2 mm peripheral basic pattern 24 all around this envelope outline. The varnish layer of the base pattern 24 is printed with a screen made from a fabric whose mesh comprises 150 threads / cm, the threads having a diameter of 34lam. A glass transition temperature measurement by differential thermal analysis does not make it possible to detect a glass transition temperature of the basic pattern 24 thus formed, after hardening of the latter.
    [0014] After hardening of the base pattern 24, reflective metallized markings 23 are printed with a reflective metallized ink composition marketed under the reference 3Y2656 by the company Tiflex (Poncin, France). To further obtain a colored reflective metallic effect, 2% to 10% dye is added in this reflective metallized ink composition.
    [0015] The reflective metallized markings are printed with a screen printing screen made from a fabric whose mesh comprises 120 threads / cm, the threads having a diameter of 34 μm. Guillochis 23a are formed of lines having a width of between 100 μm and 150 μm.
    [0016] It should be noted that the metallized inscriptions thus printed are reflective, seen by transparency on the side of the face of the polycarbonate sheets opposite to the printing face 22, but that their free faces seen on the same side as the printing face 22. are not reflective. The printed polycarbonate sheets are associated with three other polycarbonate sheets interposed between the polycarbonate sheets printed to form a stack, the printed faces being placed in contact with the underlying sheets of the stack, i.e. say not constituting the outer faces of the latter. The five polycarbonate sheets forming, with the two printed sheets, said stack are successively the following: a sheet of 200 μm of white polycarbonate, a sheet of 200 μm of white polycarbonate; a sheet of 200 μm of white polycarbonate. The set of sheets forming this stack is laminated in a lamination press under the following conditions: - 1 min of rise at 180 ° C - 12 min at 180 ° C under 30 N / cm 2 - 5 min at 180 ° C under 150 N / cm 2 - cooling at 26 ° C for 17.5 min at 180 N / cm 2. A multilayer data carrier 10 is obtained in the form of a board whose total thickness is equal to the sum of the thicknesses of the used polycarbonate sheets decreased by about 10%. It is found that the reflective metallized markings retain their metallized and reflective appearance as viewed from the outer face 11 side of the multilayer data carrier 10 and that their fineness is in no way impaired by the hot and press lamination operation. No burrs or deformation is observed. COMPARATIVE EXAMPLE 2 The same process as in Example 1 above is carried out, replacing the base pattern-forming varnish composition with a varnish composition sold under the reference ultraflex® by Marabu (France, www. marabu.com). After curing, this varnish has a surface state suitable for receiving the reflective metallized markings, but a glass transition temperature Tg of between 20 ° C and 60 ° C detectable by differential thermal analysis. After hot and pressure lamination of the various constituent layers of the stack, it is found that the multilayer data carrier obtained has reflective metallized markings, but with deformation and thickening of the lines.
    [0017] COMPARATIVE EXAMPLE 3 The same process as in Example 1 above is carried out, replacing the varnish composition forming the base pattern 24 with a varnish composition sold under the reference Marastar® SR by the company Marabu (France, www. .marabu.com). After curing, this gloss varnish has a surface state suitable for receiving the reflective metallized markings, but a glass transition temperature Tg of between 55 ° C and 65 ° C detectable by differential thermal analysis. After hot and pressure lamination of the various layers constituting the stack, it is found that the multilayer data carrier obtained has reflective metallized markings, but with deformation and thickening of the lines. COMPARATIVE EXAMPLE 4 The same process is carried out as in Example 1 above, but without the use of a base pattern 24, the reflective metallized markings being directly printed on sheets of a polycarbonate film as marketed under the trademark. Makrofol® ID 1-4 by Bayer MaterialsScience (Leverkusen, Germany). These polycarbonate sheets have a smooth mirror-reflecting surface greater than 98%, measured according to ISO 2813 with an angle of 60 ° and a surface tension greater than 40 dynes / cm. After printing and hardening the reflective metallized markings on these polycarbonate sheets with the same reflective metallized ink composition as in Example 1, and incorporation of the latter in the stack, then hot and press lamination of the various constituent layers from the stacking, it is found that the metallised inscriptions have lost their reflective effect. It goes without saying that the invention can be the subject of many alternative embodiments and applications other than those described above and shown in the figures. In particular, the reflective metallized markings 23 can be used in different forms and in different applications, including for making holographic patterns.
    权利要求:
    Claims (8)
    [0001]
    CLAIMS 1 / - A method of manufacturing a support (10) of multilayer data by hot lamination and under pressure of a stack of a plurality of superimposed layers comprising at least one layer of at least one thermoplastic material, said data carrier multilayer having inscriptions, said reflective metallized markings (23), having a metal appearance, at least partially reflecting, and visible from at least one outer face (11) of the multilayer data carrier (10), said hot lamination being carried out in a temperature range, called the lamination temperature range, characterized in that: - printing, on one face, said printing face (22) of at least one layer, called printing layer (21). , transparent said stack, a varnish composition in a pattern, said pattern (24) base, selected to receive said reflective metallized inscriptions (23), said comp varnish osition being chosen, after curing, to be transparent and to have: o a surface tension greater than 40 dynes / cm and a smooth surface state of specular reflection greater than 50% measured according to ISO 2813 with an angle of 60 Wherein no glass transition temperature in the lamination temperature range, said reflective metallized indicia (23) are printed in contact with said base pattern (24) of said printing layer with a metallized ink composition comprising a curable binder incorporating discrete particles, referred to as reflective metallized particles, in the general form of platelets dispersed in the curable binder with a particle size chosen to form pigments having an at least partially reflective metallic appearance, and then forming said stack comprising said layer (21), said print face (22) being opposite at said outer face (11) andapplied with said reflective metallized inscriptions (23) in contact with another adjacent layer (19) of the stack, and then the hot and press lamination of this stack is carried out.
    [0002]
    2 / - The method of claim 1, characterized in that at least a portion of said reflective metallized markings (23) is printed with a line width of less than 500 um.
    [0003]
    3 / - Method according to one of claims 1 or 2, characterized in that a printing layer (21) of material selected from the group of transparent thermoplastic materials and transparent synthetic papers.
    [0004]
    4 / - Method according to one of claims 1 to 3, characterized in that a layer (21) of printing material selected from the group of transparent polycarbonates, transparent polyesters, and transparent PVC.
    [0005]
    5 / - Method according to one of claims 1 to 4, characterized in that said pattern (24) base is printed with a varnish composition selected from the group of acrylic transparent varnishes curing under ultraviolet and clear solvent varnishes volatile agent containing acrylic binder and at least one hardening agent.
    [0006]
    6 / - Method according to one of claims 1 to 5, characterized in that a metallized ink composition comprising reflective metallized particles selected from vacuum metallized pigments and reflective metal particles.
    [0007]
    7 / - Method according to one of claims 1 to 6, characterized in that a metallized ink composition comprising reflective metallized particles having a mean particle size between 8 μm and 11 μm.
    [0008]
    8 / - Method according to one of claims 1 to 7, characterized in that prints the reflective metallized markings (23) on the base pattern (24) with a peripheral edge (26) of the pattern (24) base with respect to reflective metallized inscriptions (23) .9 / - Multilayer data carrier comprising a plurality of layers superimposed by hot and pressure lamination in a temperature range, called a lamination temperature range, comprising at least one layer of less a thermoplastic material, said multilayer data carrier having inscriptions, said reflective metallized inscriptions (23), having a metallic appearance, at least partially reflecting, and visible from at least one outer face (11) of the support (10). ) of multilayer data: characterized in that said reflective metallised inscriptions (23): - are formed of a metallized ink printed reinitiating a hardened binder incorporating discrete particles, referred to as reflective metallized particles, in the general form of platelets dispersed in the binder with a particle size forming pigments having an at least partially reflective metallic appearance, - are printed in contact with a pattern (24) base pattern printed on a transparent layer, said printing layer (21), said base pattern (24) being formed of a transparent varnish having: o a surface tension greater than 40 dynes / cm and a surface condition Specular reflection smooth greater than 50% measured according to ISO 2813 with an angle of 60 °, no glass transition temperature in the lamination temperature range. 10 / - Support according to claim 9, characterized in that at least a portion of said reflective metallized markings (23) has a line width of less than 500 μm. 11 / - Support according to one of claims 9 or 10, characterized in that at least a portion of said reflective metallized markings (23) has a line width of less than 200 um. 12 / - Support according to one of claims 9 to 11, characterized in that said printing layer (21) is made of a material selected from the group of transparent thermoplastic materials and transparent synthetic papers.13 / - Support according to one of claims 9 to 12, characterized in that said printing layer (21) is of a material selected from the group of transparent polycarbonates, transparent polyesters, and transparent PVC. 14 / - Support according to one of claims 9 to 13, characterized in that it is formed of layers (12, 19, 20, 21) of at least one material selected from the group of thermoplastic materials and synthetic papers . 15 / - Official document comprising a data carrier according to one of claims 9 to 14, at least one outer face (11) has reflective metallized markings (23).
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    同族专利:
    公开号 | 公开日
    US10023001B2|2018-07-17|
    WO2015189393A1|2015-12-17|
    FR3022181B1|2018-01-19|
    CA2951335A1|2015-12-17|
    US20170120663A1|2017-05-04|
    EP3154796A1|2017-04-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20100277778A1|2009-04-30|2010-11-04|Fasver|Metallised holographic film and process for its manufacture|
    WO2012176126A1|2011-06-21|2012-12-27|Basf Se|Printing diffraction gratings on paper and board|
    EP2309339B1|1999-01-19|2016-11-30|Dai Nippon Printing Co., Ltd.|Relief hologram or diffraction grating sheet and forgery-preventing sheet comprising the same|
    JP2005510765A|2001-11-26|2005-04-21|テサ・アクチエンゲゼルシヤフト|Labels with improved anti-counterfeiting protection measures|
    WO2005006166A1|2003-07-14|2005-01-20|Dai Nippon Printing Co., Ltd.|Forgery preventing label and method of manufacturing the same|
    DE102004022079A1|2004-05-05|2005-11-24|Giesecke & Devrient Gmbh|Value document with serial number|
    EP2181858A1|2008-11-04|2010-05-05|Agfa-Gevaert N.V.|Security document and methods of producing it|EP3458260A4|2016-05-17|2020-04-01|Griff And Associates, L.P.|Method of laminating multilayer structure used in making of credit and gift cards|
    US10350935B1|2018-01-10|2019-07-16|Assa Abloy Ab|Secure document having image established with metal complex ink|
    US10821765B2|2018-01-10|2020-11-03|Assa Abloy Ab|Secure documents and methods of manufacturing the same|
    US11220127B2|2018-07-20|2022-01-11|Griff And Associates, L.P.|Method and apparatus for roll-to-roll processing of sheet stock|
    法律状态:
    2015-06-23| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-18| PLSC| Publication of the preliminary search report|Effective date: 20151218 |
    2016-06-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-26| PLFP| Fee payment|Year of fee payment: 5 |
    2019-06-25| PLFP| Fee payment|Year of fee payment: 6 |
    2020-06-25| PLFP| Fee payment|Year of fee payment: 7 |
    2021-06-25| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455407|2014-06-13|
    FR1455407A|FR3022181B1|2014-06-13|2014-06-13|METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH REFLECTIVE METALLIZED INSCRIPTIONS|FR1455407A| FR3022181B1|2014-06-13|2014-06-13|METHOD FOR MANUFACTURING A MULTILAYER DATA MEDIUM WITH REFLECTIVE METALLIZED INSCRIPTIONS|
    US15/318,250| US10023001B2|2014-06-13|2015-06-12|Method for manufacturing a multilayer data medium with reflecting metallised inscriptions|
    EP15729803.5A| EP3154796A1|2014-06-13|2015-06-12|Method for manufacturing a multilayer data medium with reflecting metallised inscriptions|
    PCT/EP2015/063180| WO2015189393A1|2014-06-13|2015-06-12|Method for manufacturing a multilayer data medium with reflecting metallised inscriptions|
    CA2951335A| CA2951335A1|2014-06-13|2015-06-12|Method for manufacturing a multilayer data medium with reflecting metallised inscriptions|
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