EP2268865A2 - Method for producing a sheet with a thick or thin section at the level of a ribbon and corresponding sheet - Google Patents

Method for producing a sheet with a thick or thin section at the level of a ribbon and corresponding sheet

Info

Publication number
EP2268865A2
EP2268865A2 EP09742257A EP09742257A EP2268865A2 EP 2268865 A2 EP2268865 A2 EP 2268865A2 EP 09742257 A EP09742257 A EP 09742257A EP 09742257 A EP09742257 A EP 09742257A EP 2268865 A2 EP2268865 A2 EP 2268865A2
Authority
EP
European Patent Office
Prior art keywords
3b
3a
thickness
strip
tape
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.)
Pending
Application number
EP09742257A
Other languages
German (de)
French (fr)
Inventor
Henri Rosset
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oberthur Fiduciaire SAS
Original Assignee
ArjoWiggins Security Sas
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to FR0852472A priority Critical patent/FR2929962A1/en
Application filed by ArjoWiggins Security Sas filed Critical ArjoWiggins Security Sas
Priority to PCT/FR2009/050594 priority patent/WO2009136059A2/en
Publication of EP2268865A2 publication Critical patent/EP2268865A2/en
Application status is Pending legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/06Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/06Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
    • D21F11/08Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H21/00Non-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
    • D21H21/14Non-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
    • D21H21/40Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42Ribbons or strips

Abstract

The invention relates to a paper-making method for producing a sheet (1) with at least one jet of a fibrous substrate (2) and at least one fibrous ribbon (3), wherein the ribbon (3) is introduced into a fibrous suspension in a round paper machine permitting formation of the jet or in direct contact with the round shape or in contact with the jet formed, the point of introduction of the ribbon (3) is selected such as to create at least one thin section or a thick section on the sheet (1) at the level of the ribbon (3), the thin section being due to a reduction in the draining of the fibrous suspension by the ribbon (3).

Description

A method of manufacturing a sheet having a reduced thickness or over-thickness at a ribbon sheet and associated

The present invention relates to the field of security documents and relates inter alia to a method of manufacturing a security sheet, for example mainly made of paper.

In the description, "paper" means any sheet obtained by wet route using a suspension of natural cellulose fibers and / or mineral fibers, plant or other organic as cellulose, synthetic optionally, can contain various fillers and various additives commonly used in papermaking. Background

In the manufacture of security documents, in particular security paper, it is common to want to incorporate one or more security elements, for example by applying a film or a security thread in a security film or by coating a iridescent coating strip or else by creating windows in a security sheet and applying a transparent film at these windows. It usually comes out creating extra thickness on security documents that can generate such solid ink problems of security documents or even make difficult the printing steps.

It has been proposed several solutions aiming to reduce locally the thickness of a security sheet where security elements are to be placed, during manufacture of the sheet on the cylinder of a machine for paper. In most cases, the proposed solution consists in sealing a portion of the forming wire used in the manufacturing process of the security sheet with round shape.

International application WO 99/06629 discloses a method of manufacturing paper using a Fourdrinier paper machine having a textile fabric to obtain zones of low and heavy weight.

International application WO 93/00474 also describes a method of manufacturing a security sheet using a paper machine Fourdrinier equipped with a canvas on which has been added the reducing pellets draining and allowing thereby to form regions of different basis weights. The European patent application EP 0625431 discloses a method for manufacturing a security paper having a security thread manufactured from a film and incorporated between two jets.

The European patent application EP 0549384 describes a method of making a paper having areas of reduced thickness obtained through the connecting pads to the forming fabric to the cylinder mold.

The European patent application EP 1122360 discloses a method of making paper wherein a watermark is carried out from changes made to the forming fabric to the cylinder mold. British patent application GB 2,433,469 describes the manufacture of a fibrous security substrate wherein is incorporated a fiber ribbon having a plurality of openings.

The European patent application EP 0070172 describes a method for manufacturing a security paper comprising a tape having alternating areas for depositing papermaking fibers and regions preventing the deposition of paper fibers.

European Patent Application EP 0773320 describes the insertion of a tape between two jets papermakers one of which has a watermark.

British Patent Application GB 2395724 describes the incorporation of a polyester strip having a microchip in a fibrous substrate. The solutions proposed by the prior art do not allow to make areas of reduced thickness on a security document with a relatively simple process. Indeed, the solutions require modifications and extensive preparation forming fabrics used on round shapes and usually does not allow for reduced thickness large enough to incorporate security elements presented above. summary

There is therefore a need to address at least some of the drawbacks mentioned above.

There is especially a need to improve the production of security documents, including safety sheets, in particular for producing varying thickness zones on the documents. The invention aims to meet some or all of these needs by incorporating a tape, fiber or not, security sheets during their manufacture, said strip being advantageously located at or near a place where must be applied security features. The invention thus provides, according to one aspect, a paper manufacturing process by way of a sheet comprising at least one jet of a fibrous substrate and at least one fibrous strip, wherein the strip is inserted in a fibrous suspension of a cylinder mold paper machine for forming the jet or is brought in direct contact with the round shape or in contact with the jet formed, in particular before the jet leaves the lifter cylinder.

The ribbon feed point can be chosen so as to create at least one reduced thickness or an over-thickness of the sheet at the ribbon, for example as it emerges from the fiber suspension or after the sub-thickness being due to a reduction in the dewatering of the fiber suspension by the ribbon. Thanks to the invention it is possible to obtain a security sheet having at least one reduced thickness or reduced thickness can allow incorporation of security elements without requiring the use of a specific forming fabric or modified, in particular due to the use of a fibrous tape incorporated in the fibrous substrate during the manufacture of the security sheet. Therefore, it is possible to use forming fabrics that usually equipping the cylinder mold paper machine used in the manufacture of security paper.

In addition, the use of a tape width and / or thickness varying for example, can achieve sub-layers or thicknesses of various sizes also. The layers or sub-layers created or may extend throughout the sheet.

The jet carrying the tape can not come into partial covering of the strip, that is to say, the fibrous substrate does not cover the side portions of the tape on its main faces of both sides thereof on a substantial width, for example greater or equal to 1 mm.

Thanks to the invention, it is possible to incorporate one or more security elements of all types in the security sheet near or at the sub-layers or thicknesses without generating locally, for example, thicknesses related to the presence of the security elements. A reduced thickness may for example allow to incorporate at this at least one security element whose thickness can be compensated, at least partially, by the reduced thickness. An over thickness may for example allow to juxtapose the ribbon at least one security element whose thickness can be compensated, at least partially, by the over-thickness. The invention can also be used to manufacture new security structures, regardless of any thickness compensation discussed above. The ribbon may be introduced into the fibrous suspension or in direct contact with the round shape in various ways.

By "direct contact" is meant that the ribbon feed point is in contact with the round shape while the latter is not covered with fibers of the fiber suspension at the point of introduction of the tape. The point of introduction may especially be performed on an area of ​​the non-round shape immersed in the fiber suspension. Preferably, the cohesion of the formed sheet may be, in this case, provided by a second fibrous ply, being adjacent to the first jet formed and in particular on the side in contact with the forming fabric during its formation ( "side canvas ").

The fibrous tape may be introduced in direct contact with the round shape by one of its faces, before penetrating into the fiber suspension. In this manner, no fiber of the fibrous slurry may be deposited on the face of the ribbon in contact with the round shape. It is thus possible to obtain a ply of paper on one face of which is visible the face of the ribbon that was in contact with the round shape. In this case, a reduced thickness can be realized at the other face of the strip opposite to the round shape.

The ribbon may also be introduced into the fiber suspension while the fibers have already been deposited on the cylinder to the point of introduction of the tape. The fibers may have already deposited on the round shape in its entirety on the surface of the round or partly formed on the surface of the round shape. Thus, it may be possible that no side of the tape is in direct contact with the fabric of the round. The tape may instead be in contact by one of its faces, the fibers which have already been deposited on the cylinder before introducing the ribbon into the fiber suspension. Thus, the face of the ribbon in contact with the fibers previously deposited on the cylinder can no longer be observable on the security sheet after manufacture. In this case, a reduced thickness or over-thickness relative to the thickness of vellum, that is to say the thickness of the area of ​​the sheet, in particular the substrate, which is not the ribbon may be carried out at the other side of the tape opposite to the round shape.

The face of the tape which is in direct contact with the round shape or the fibers of the pulp suspension which have already deposited on the round shape, can clog the holes of the forming fabric of the round shape and can thus prevent aspiration against the web of fibers of the fibrous suspension.

The ribbon may be introduced into a twin-jet paper machine. In this case, the paper machine may include eg two round shapes placed online, a round shape and a flat table, or even a round shape and a forming roll ( "short form"). In particular, the ply of paper formed on the cylinder and comprising the tape may be joined at the wet end of the paper machine with a second ply of paper which is superimposed to the tape. The second ply may then allow to consolidate the first ply of paper into the tape introducing portion. It can also provide protection for the elements present in or on the tape, for example an electronic device, in particular an integrated microcircuit device, for example an RFID device.

It is still possible to use a paper machine equipped with a single round. The introduction of the ribbon may be by a feeding device, for example such as a peeling system, placed along the width and opening into the trough-shaped close to the round shape, before the beginning of the dewatering of the fibrous slurry on the wire of the cylinder mold. After draining, one obtains the security film which can then be pressed and dried according to the current papermaking process. The resulting stream may optionally be married wet, that is to say, before drying, with other jets whose fibrous compositions may be the same or different, may be formed on paper machine Fourdrinier in forming roll or round shape.

The resulting stream may be joined by lamination with another paper ply which is superimposed to the tape.

The sheet may consist of two plies of paper each having a ribbon and one of which, or both, has at least one reduced thickness or over-thickness at the ribbon. The two ribbons of the two jets can be or not in contact with one another, after assembly of the jets.

Advantageously, the introduction of the strip can take place in the direction of travel of the sheet and thus allow an easy introduction of any security features, they are typically introduced in the same direction during a process of manufacturing a security sheet.

The ribbon may be at least one of its faces not completely covered by the fibers of the fibrous slurry at the outlet of the paper machine with round shape.

Creating a reduced thickness or of an over-thickness can result from deposition of fibers of the fibrous suspension partial or zero on at least one side of the tape. It may in particular be dependent on the insertion angle of the tape, the thickness thereof, a coating present on its surface and / or a relief on the present round shape.

The tape may have a higher or lower thickness than the thickness of the vellum of the security sheet. When the ribbon has a thickness less than the thickness of the vellum of the sheet which contains the tape, the sheet can have a reduced thickness at the level of the tape, especially at the side of the tape opposite to the round shape, in particular when the tape is brought in direct contact with the round shape or when the tape is fed into the fiber suspension while the thickness of the fibers already present on the cylinder is less than the difference in thickness between the thickness of vellum the sheet and the ribbon thickness.

Alternatively, the sheet may have an over-thickness at the ribbon, for example while the ribbon is introduced into the fiber suspension while the thickness of the fibers already present on the cylinder is greater than the difference in thickness between the thickness of the vellum and the ribbon thickness.

When the tape has a thickness greater than the thickness of the vellum of the sheet, the sheet may have an over-thickness in the tape, especially at the side of the tape opposite to the round shape.

As mentioned above, the deposition of the fibers on one side of the tape, especially the side opposite to the round shape, may be zero because the presence of the tape against the web of round shape prevents draining, c ' is to say the deposition of the fibers of the fibrous suspension against the canvas. The deposition of the fibers on one of the faces of the tape, especially the side opposite to the round shape, may also be only partial, such that the tape may have been pretreated, for example by a coating, for decrease its porosity, and prevent or slow the deposition of fibers on the treated area. The treated area may for example correspond to a central area on the tape, in particular on the side opposite to the round shape.

The treatment of the area may for example result from the application of such a coating a composition comprising a hydrophobic compound and / or mouth-porating. This application may for example consist of a latex coating or a hydrophobic varnish.

The round shape may be free terrain on which is placed the tape or alternatively comprise. Where appropriate, the relief may be formed by embossing the forming wire. For example, the tape can be introduced so that its center coincides with the center of the relief of the round shape. The relief of the round shape may for example have a front view of a square, round, oval, polygonal with rectilinear or curvilinear outline, being preferably rectangular. The relief may be continuous or discontinuous along the circumference of the round shape. The tape may have a width greater than that of the relief. In this way, it is for example possible to have at least a portion of the tape, including the two edges of the ribbon, which is not superimposed on the terrain.

The ribbon may be introduced while the fibers of the fibrous suspension are already deposited on the relief of the round shape. In this way, the tape can not be directly in contact with the relief of the round shape, one of its faces being in contact with the fibers previously deposited on the cylinder mold. Alternatively, the tape can be introduced so that no fibers of the fiber suspension is deposited on the relief of the vat, including the point of introduction of the tape. In this way, one of the faces of the tape can be directly in contact with the relief of the round, this face being visible on the security sheet after manufacture.

When the cylinder mold includes a relief and that the ribbon is wider than the relief, the fibers of the fibrous slurry may be deposited between the part or parts of the non-overlapping tape terrain and the round shape. In this way, it may be possible to create one or more sub-layers on the sheet at the side of the tape which is opposite the round shape. In this case, it may also be possible to create one or more sub-layers or extra thickness at the side of the tape opposite to the round shape, in particular according to the sliver thickness compared to the thickness of the vellum of the sheet. The presence of one or more sub-layers or over-thicknesses can be used to at least partially house one or more security elements, respectively superimposed on the level thereof or juxtaposed thereto. In particular, the one or more security elements can be arranged between two on-thicknesses and provide their mechanical protection, for example against shocks, impressions such as by intaglio printing, or during subsequent pressing steps or lamination. When the thickness of the security elements is substantially identical to the difference between the thickness of the vellum of the sheet and that of the strip, it is possible to obtain a security sheet substantially no reduced thickness or over-thickness. In particular, the security film may comprise at least one security element superimposed on the tape on the side of reduced thickness and having a thickness at least partially offset by the reduced thickness. The reduced thickness can fully compensate for the thickness of the security element.

Particularly preferably, the security film may comprise at least one security element juxtaposed to the tape whose thickness is at least partially offset by the extra thickness. The extra thickness can fully compensate for the thickness of the security element.

The extra thickness may allow for example to obtain particular effects of security following treatment of the fibrous tape, for example embossing, at the on-thicknesses. Treating the tape at the extra thickness may allow to obtain a security sheet substantially no reduced thickness or over-thickness.

The ribbon may for example undergo embossing, in particular hot embossing, in particular at an extra thickness. In this case, the tape may preferably comprise polyethylene fibers. The introduction of a strip comprising polyethylene fibers allows in particular the subsequent creation of individual reliefs by hot embossing, while imparting to the sheet a better cohesion because the cohesion of a cellulosic substrate, for example, is in fact greater to that of a substrate composed of polyethylene fibers.

The tape may have an over-thickness, in particular before any embossing of the strip extending over at least 50%, more preferably 80% or more, of the surface of the face of the strip, containing the extra thickness. The extra thickness may extend over an entire face of the ribbon.

After embossing, the sheet may be devoid of extra thickness. The surface of the side of the tape which had the extra thickness before embossing may be substantially planar. The tape may have micro-reliefs, such as grooves or protrusions, in particular after embossing, of reduced dimensions, for example of size of from 1 to 3 microns. These micro-reliefs do not form over thickness or under thickness in the sense of the invention.

The reduced thickness or reduced thickness can achieve a relief hollow or projecting on the security sheet, respectively, of the order of several micrometers.

If applicable, the values ​​of sub-layers or extra thickness may be determined depending on the thickness of the security elements to be associated with them. For example, a printing or a security film disposed (e) in a reduced thickness or between two on-thicknesses. The aim can in particular be obtained from a flat sheet formed, that is to say comprising neither reduced thickness or of reduced thickness.

Sub-thicknesses obtained can for example be be greater than or equal to 15 .mu.m, preferably 30 .mu.m, preferably 60 .mu.m. For example, it is possible to obtain greater than or equal sub-thicknesses to 44 .mu.m for a substrate thickness greater than or equal to 115 microns. The extra thickness may depend on the point of introduction of the strip and its thickness. For reasons of runnability it may be advantageous to be limited to on-thicknesses below 20 microns although the protection of certain security features may require higher on-thicknesses.

The introduction of the ribbon may also be carried out by bringing the tape into contact with the papermaking stream present on the web of round shape at the outlet of the trough-shaped. The tape is for example inserted between the jet emerging from the trough-shaped and a second ply which is joined to the first cylinder between the lifter and the round shape. Ribbon

The term "tape" means a tape made of a single piece or made of an assembly of a stack or of a juxtaposition of strips or individual parts.

Advantageously, the fibrous tape is a paper tape. The introduction of a paper ribbon, compared to the introduction of a plastic tape, for example, can allow to obtain a sheet having good cohesion because of bonds may develop between the paper ribbon and the substrate. In particular, when the second ply is applied to the tape, that the tape is paper, not plastic for example, can provide a large cohesion between the tape and the second jet. The ribbon may be fibrous and contain non-fibrous elements.

The tape may have a basis weight between 5 and 100 g / m 2, preferably between 15 and 55 g / m 2 and more preferably between 20 and 30 g / m 2.

The tape may have a width of between 2 and 60 mm, preferably between 4 and 30 mm and more preferably between 10 and 20 mm. The tape may have a width greater than that of the relief of the round shape, if necessary.

The tape may have a thickness greater than 10 .mu.m, preferably between 20 and 120 .mu.m, more preferably between 30 and 80 .mu.m.

The tape may have a thickness different from that of the vellum of the sheet. For example, the tape may have a thickness greater than that of the vellum of the sheet to allow the creation of over-thicknesses. The ribbon may also have a thickness less than that of the vellum of the sheet to allow the creation of sub-layers.

The tape may also include at least one electronic device, in particular an integrated microcircuit device. The electronic device may be a detector. The electronic device may be a radio frequency identification device, more commonly known as RFID device, in particular a chip and / or antenna which can in particular be printed on the tape. The electronic device may for example be deposited and fixed, for example by gluing, on one side of the tape. The electronic device may also be incorporated within the ribbon, in particular before it is introduced close to the round shape, in direct contact with the round shape or in the fibrous suspension. The tape can be fabricated from a material, in particular paper, having undergone a prior treatment of resistance in the wet state (REH).

The ribbon may have a resistance in the wet state (WS) with respect to the traction greater than 30%, in particular so as not to cause problems during insertion of the ribbon in the sheet. Resistance to wet tensile is measured by dividing the value of the wet tensile strength measured according to standard NF Q

03 056 by the dry tensile strength measured in accordance with NF standard EN ISO 1924. This resistance in the wet state may be furnished in a conventional manner by adding a strength agent in the wet state, for example as a resin polyamine-amide-epichlorohydrin (PAAE), a melamine formaldehyde resin, etc ...

Alternatively, an additional resistance in the wet state (WS) can be obtained by adding a part of or agent (s) in REH surfacing baths of a fibrous sheet, for example for the manufacture of the tape.

The security elements may be incorporated in the strip or near the ribbon may be of different types.

The security elements may represent different units, for example one or more alphanumeric characters or designs or logos, eg also present on the sheet.

The sheet may have at least two sub-layers or two extra thickness or a reduced thickness and an over-thickness facing each other and at least two security elements may be incorporated at or near each of these sub-layers or over-thicknesses, the security elements can be opposite one another.

The two security features can be applied, for example by printing the mark. By "printing mark" means that the position of the security features on the tape is determined.

The two ribbon security elements may allow to obtain different effects, especially optical, thanks to their observable in transmitted complementarity.

The term "observable in transmitted" means an observation of the light which passes through the tape in the direction of its thickness, for example, visible light, ultraviolet or infrared. The two security elements may for example allow to get in show-a "moiré".

Moiré can for example show a pattern produced by the superposition of two security elements, for example by the approximation lines of the two security features. For example, a first printing can be performed on the front face of the ribbon and a second printing can be performed on the reverse side of the tape. Prints can be made at or near the sub-layers or thicknesses. Then, when the observation in transmitted ribbon, a complementary pattern may appear by moiré effect between the first and second impressions.

The two security elements may still allow, for example, get-through of "combinatorial effects".

A "combinatorial effect" results from the observation in transmitted to a particular pattern which is the result of combining two patterns appearing each on the front and back of the tape. For example, a first pattern can be printed on one side of the strip and a second pattern may be printed on the back of the tape. During the observation in transmitted, a third pattern can then be observed, resulting from the combination of the first and second patterns.

Security features can be printing, including inks. The inks may include other additional security features, such as specific pigments.

The security elements may also be films, for example plastic films, transparent or not, or having a reduced opacity, for example less than or equal to 40%, preferably less than or equal to 30%, measurement made according to ISO 2469.

The tape, whether fibrous or not, may comprise one or more openings, for example partly or wholly made in the tape.

The openings may be of various shapes, for example square, oval, round, rectangular, polygonal, star, among others. The apertures may correspond to holes, slits, drawings, through cavities or not, for example, made by embossing, cutouts according alphanumeric patterns, varying shapes and dimensions. The openings may be through. The openings can be made after formation of the safety sheet. Alternatively, the perforations may be made on the ribbon prior to its introduction.

The openings may include one or more security features, including an electronic device, in particular an integrated microcircuit device such as an RFID device.

Where appropriate, the safety elements may extend completely or partially into the openings.

The security elements, including films, can be placed at or near sub-layers or over-thicknesses, including sub-layers or layers facing each other. In particular, the security elements can be juxtaposed on either side of the extra thickness, or be superimposed on the sub-layers, the security elements being opposite each other.

The sub-layers and / or over-thicknesses can in this case at least partially compensating the thickness of the security elements. Security elements, in particular films, can be superimposed on the sub-layers at the openings made in the tape.

At least two security elements, in particular films, can be superimposed on at least two sub-layers facing each other, at least one opening being formed in the tape at the two sub-layers. The sheet may in particular comprise on either side of the ribbon a sub thickness in which extends at least partially at least one security element, in particular a film extending parallel to the tape in contact therewith. A security element, in particular a film, can extend at least partially into each of the sub-layers of the sheet. The security elements, including films, can be complementary, that is to say, when observed in show-the two elements, it is possible to obtain different optical effects, such as moiré patterns and / or combinations, for example the appearance of a pattern resulting from the superposition of patterns on the two security elements. The security elements may for example have sufficient opacity to allow the observation of special optical effects in transmitted. The security elements, including films, can be introduced near the round shape during the formation of the sheet.

The thickness of the films is for example greater than or equal to 10 microns, preferably greater than or equal to 30 .mu.m. The film thickness can be compensated at least partly by sub-layers or thicknesses. For example, the cumulative thickness of a film and the tape may be equal to the thickness of the vellum of the sheet at more or less 5 microns near, better more or less near 3 microns. This is an advantageous embodiment of the invention allows obtaining a substantially flat sheet, reducing problems due to differences in thickness and occurring during any subsequent steps such as peeling , winding and cutting of the sheet, stacking and printing sheets.

The films can comprise a specific material that collects light. Such materials collectors luminescent light may be suitable are called "waveguide". These are, for example, polycarbonate-based polymer films, called LISA ® and marketed by Bayer.

The films may be inks, varnishes, resins, cut strips, laminates, laminates, particularly when hot, or extruded.

The films can be colored, particularly having different colors. The ribbon may comprise at least one security thread, especially a security thread that displays an electronic device, in particular an integrated microcircuit device, for example an RFID device.

An electronic device including an integrated microcircuit device, e.g., an RFID device, may be at least partially housed in a reduced thickness, the reduced thickness compensating at least partially the thickness of the electronic device.

The tape can be perforated and substrate fibers may be included in the perforations of the tape. In particular, the fibers of the substrate contained in the tape perforations may be of different color than the ribbon.

The tape and / or the substrate may comprise several special features mentioned below. These characteristics may be applied to the entirety of the ribbon and / or substrate or only a portion of the ribbon and / or substrate, more preferably to one or more portions of the ribbon and / or substrate displaying one or more sub-layers or over-thicknesses.

The ribbon may for example be combined with a strip of thermoplastic material and / or metal, for example of PET, laminated or hot rolled strip prior to its introduction to near round shape.

The tape and / or the substrate may lack watermark. Alternatively, the tape and / or the substrate may comprise at least one watermark. The watermark of the strip may lie at a reduced thickness or increased thickness of the security film. When the ribbon and the substrate having a watermark, the watermark superimposing the substrate and watermark ribbon may allow to observe a pattern resulting from the combination.

The watermark of the tape can also be juxtaposed to the substrate of the watermark so that juxtaposition creates a new pattern. The possible watermark ribbon and / or the substrate may be a clear watermark.

In this case, the light areas of the watermark have a basis weight strictly less than that of the vellum. Alternatively, the watermark can be a dark watermark. The watermark can still be a multitone effect watermark comprising a set of light areas arranged to form a halftone image with light and dark tones. This may include halftone screen patterns formed for example by lines. The patent application EP 1122360 discloses the production of such a watermark.

Watermarks potential of the ribbon and the substrate may also be superimposed to obtain a moiré.

The tape may have different optical properties from those of the substrate, particularly at a reduced thickness and / or an over-thickness, in particular coloring properties, fluorescence, phosphorescence, magneto-optical, photochromism to thermochromy to piézochromie, iridescence, among others.

For example, the substrate and the ribbon can have different colors.

All colors are possible. The ribbon and the substrate may have a color difference or color difference .DELTA.E (according to CIE Lab color space 1976) greater than 0.2 and preferably greater than 1. However, the human eye is more sensitive to a difference in color on non-saturated hues, and the man in the art can adapt the difference so color to get the "contrast" desired.

The ribbon may comprise a conventional ink or security, in particular fluorescent, phosphorescent, magnetic, photochromic, thermochromic, piezochromic, iridescent, transparentizing, among others. The ink may be applied partly or wholly on the tape, that is to say only on certain areas of the surface of the tape or on the entire surface of the tape. The ink may be applied to the tape by a printing means such as offset, gravure, screen printing or jet printing ink. One or more security elements may be selected from the previously mentioned inks and can be applied at the reduced thickness or juxtaposed over-thickness.

The ribbon may also be coated with a transparent or colored varnish.

The ribbon may include a fluorescent agent. The fluorescent agent can be colored or not, visible or invisible in visible light. The fluorescent agent may for example be incorporated into the bulk of the ribbon. The fluorescer can be seen for example under ultraviolet (UV) light and / or infrared (IR).

Preferably, the ribbon may extend between two opposite edges of the sheet.

The tape may have irregular shaped edges, for example in the form of broken or wavy lines, slots, zigzag, among others. The edges of the tape may have the same shapes or different shapes, regular or irregular.

The ribbon may also introduce different features such noticeable at sight or touch.

The ribbon may for example be embossed, thus creating a special effect, e.g., a tactile or embossed surface. This effect can allow the micro-reliefs Training ribbon, distinct sub-layers or over-thicknesses.

The tape may be coated with a thermoplastic polymer and optionally embossed as a result of this coating.

The tape can be printed with drops of varnish, resin or ink thermogonflante, among others.

When the tape includes impressions, this can for example allow to obtain variable optical effects. The ribbon may comprise a thermogonflante ink to create at least one relief, this ink being activated before introduction of the tape. The activation prior to incorporation reduces the risk of breakdown of the sheet upon swelling of the ink. The ribbon may comprise particles, for example be detected with the naked eye or to the touch, introduced by mass in the ribbon, for example as beads, for example beads of a synthetic material, for example polyurethane, or inorganic , for example glass, of dimension for example less than 300 microns, or by deposition by screen printing or gravure printing, for example in the form of beads, for example of size less than 100 .mu.m.

The ribbon may comprise a textile band, for example knitted or incorporated in laminated ribbon to the tape. The ribbon may comprise textile fibers. The tape may be made of a woven or a nonwoven.

The ribbon may comprise a relief printing, for example screen-printed. The tape may have to touch a greasy appearance, rough, smooth, silky, soft, among others.

The tape can in particular comprise polymer deposits, especially in the form of beads, for example of polyurethane beads (PU), glass beads, polyamide 6 or 12, styrene-acrylic pigments, waxes or beads of polypropylene ( PP), polyethylene (PE), polyvinyl chloride (PVC), methyl methacrylate based polymers.

The ribbon may advantageously maintain its own cohesion after introduction into the fiber substrate. Also, the structure of the tape can be observed after its introduction into the fibrous substrate under certain conditions, for example by cutting or by vision in reflection or transmission. Thus, it may be possible to observe the ribbon through differences in optical properties, for example differences in contrast, tint, saturation, brightness, opacity, which make a visible border between the tape and the substrate or characterize the presence of the tape.

The ribbon may also be observable by topography in the sheet. The tape can also, if appropriate, be observed by transparency in the sheet, especially with the naked eye. In order to obtain the ribbon, one can for example produce a fibrous sheet, preferably of low basis weight, for example between about 15 and 90 g / m 2, according to an ordinary papermaking process, that is to say for example by dewatering a fiber suspension comprising fillers and optionally conventional additives in papermaking, of any specific security elements, pressing of the fibrous mat obtained and subsequent drying. This sheet is then optionally calendered which allows in particular to reduce its thickness and is cut to form strips which are then wound into coils.

The ribbon may comprise cellulosic fibers (especially cotton fibers) and / or natural organic fibers other than cellulosic and / or synthetic fibers such as polyester fibers or polyamide, and / or optionally of the fibers mineral, such as glass fibers. The ribbon may not comprise polyvinyl alcohol (PVA) fibers.

The fibers may be hydrophilic, particularly so as to develop chemical bonds, mainly hydrogen, with the fibrous substrate.

The ribbon may comprise dry weight at least 50% cellulosic fibers.

The tape may include perforations, in particular to facilitate dewatering in the manufacture of the sheet or to add an additional optical effect, in particular in combination with at least one watermark. For example, these perforations are arranged along said strip or to form a pattern or code.

The ribbon may include a watermark and perforations around this watermark.

The ribbon may comprise at least one security element on one of its faces or on each of its faces. The tape may have different security elements on each side.

The ribbon may comprise one or more superimposed security elements to the tape in a reduced thickness or juxtaposed to an over-thickness of the strip, and / or safety elements incorporated in the strip or tape placed on the independent sub thicknesses or over-thicknesses. These security elements may be as described below.

Among the security elements, some are detectable to the naked eye, in visible light, without using a particular device. These security elements comprise for example a watermark, colored fibers or flakes, son printed, metallic or holographic, holographic foils or prints optically variable.

These security elements are said first level.

Other types of security elements are detectable only using a relatively simple device such as a lamp emitting in the ultraviolet or infrared. These security elements comprise, for example fibers, flakes, strips, son or particles. These security elements may be visible to the naked eye or not, being, for example luminescent under a Wood light lamp emitting a wavelength of 365 nm. These security elements are said second level.

Other types of security elements require for their detection a more sophisticated detection equipment. These security elements are, for example capable of generating a specific signal when they are subjected, simultaneously or not, to one or more sources of external excitation. Automatic detection of the signal is used to authenticate, if applicable, the document.

These security elements comprise, for example tracers in the form of active material, of particles or fibers, capable of generating a specific signal when these markers are subjected to an optronic excitation, electrical, magnetic or electromagnetic. These security elements are said third level.

Security elements carried by the tape, whether fibrous or not, can be of first, second or third level.

The security elements can in particular be selected from tracers, in particular nanoscale, security fibers, in particular metallic, magnetic (soft-magnetic and / or hard), or absorbent or excitable in the ultraviolet (UV), visible or infrared (IR) and in particular near-infrared (NIR), the food safety elements and relatively small size such as flakes, pigments or pigment agglomerates including absorbent or excitable under laser illumination or in the ultraviolet (UV) , visible or infrared (IR), in particular near-infrared (NIR), and security son (based on plastics, in particular of polyester) including a coating at least partially metallic, metallic, iridescent or magnetic

(In soft and / or hard magnetism), the coating can in particular comprise units positive or negative and said patterns can in particular be obtained by demetallization, chemical or biochemical reagents antifalsification and / or authentication and / or Identification may include reacting with at least one respectively falsification agent and / or authentication and / or identification, and the optically variable elements, in particular holograms, liquid crystals, iridescent pigments or mirror effect structures, especially dielectrics, and combinations thereof.

The ribbon may comprise a series of parallel security son, especially the sequence of inter-son spaces and / or the series of different widths security son constitute a code, in particular barcode types. The tape may also include an anti-theft wire soft magnetism.

The tape may further comprise at least one chemical or biochemical reagent antifalsification and / or authentication and / or identification of colored responsive manner, with at least one respectively falsification agent and / or authentication and / or 'identification. The ribbon may have perforations in a pattern or code. Depending on differences in opacity and color between the substrate and the tape, the pattern or code is observable or only observable in transmitted light or observable in both transmitted light and reflected light. If the ribbon has a invisible fluorescent printing, the pattern may be visible only under UV illumination. In particular, the pattern made by perforation can comprise at least one alphanumeric character or ideograph.

When the tape comprises at least one aperture, this aperture may be superposed at least partially with an opening corresponding made of a second ply of paper attached to the first ply having incorporated therein the tape. The aperture of the strip corresponds, for example exactly at the aperture of the second jet. At least one security element may be superimposed on the aperture, the security element being housed, for example in a reduced thickness created in the first ply of paper by the tape. The presence of the aperture in the second jet can for example allow to observe the inside of the securing element facing the ribbon. This can be fibrous or not. The invention can achieve a security sheet comprising two plies of paper each provided with a tape having possible to create a reduced thickness. These two paper rolls can be joined in such a way that the strips overlap at least partially, more preferably substantially exactly. Each sub-thickness can accommodate a safety element. The ribbons may each comprise at least one region of reduced opacity, e.g. defined by an aperture, and the two safety members arranged on either side of the assembly of the ribbons can be observed in show-through areas 'reduced opacity ribbons. This can allow for example the observation of complementary patterns. The ribbons may be fibrous or nonfibrous. The invention can achieve a security sheet by joining two paper mill rolls each provided with a ribbon defining a reduced thickness. Both jets can be joined by the faces having the sub-layers, and these sub-layers may accommodate a third tape inserted between the jets. This third strip is thus situated between the strips incorporated within each of the jets.

The invention may also allow to perform a security sheet comprising two tapes arranged to form between them a space, these strips forming thickenings on one side of the sheet, based on the fibrous substrate, a safety member being disposed between the projecting portions of the ribbons. The presence of the ribbons to protect the security element vis-à-vis a risk of crushing for example.

The ribbon may be free of a surface coating, in particular free from a pigment layer. The good affinity between the fibrous substrate and the tape is thus promoted.

The ribbon may have a resistance in the wet state (WS) with respect to the traction greater than 30%, in particular so as not to cause problems during its insertion into the sheet.

The tape may comprise an adhesive, for example a heat-sealing agent, in order to improve cohesion of the fibrous substrate.

When the tape comprises an adhesive, it allows to optimize the adhesion of the tape in the sheet.

The adhesive may for example be a heat-sealing coating, for example a heat-sealing varnish, a crosslinkable ultraviolet (UV) irradiating an adhesive, a pressure sensitive adhesive (PSA), a base lacquer with a solvent, of the type polyester for example, an aqueous phase adhesive, etc ... as an adhesive in aqueous phase, there may be mentioned the following trademarks: Mowilith DC (aqueous dispersion of vinyl acetate homopolymer with particle size ranging from 0.3 .mu.m to 2 .mu.m and glass transition temperature T g of 38 ° C, and dry solids content between 55 and 57%) and the Vinamul 3265 from Celanese; the DH9004, the DH9017, DH9044 the DL5001 and the company Collano; Primal NWL 845 Primal LC40, Primal P308M and Primal EP6000 of Rohm & Haas; the 006SDW078-2 BASF.

The adhesive may advantageously be an adhesive based on polyvinyl acetate as Mowilith DC. The Applicant has found that among the adhesives mentioned above, the

Vinamul 3265, Mowilith DC, Collano DL5001, Primal NWL 845 and Primal P308M exhibit very good results for dry wrinkle test, that is to say, the adhesion of the tape in the paper is not excessively affected by creasing.

Moreover, Vinamul 3265 and Mowilith DC also have very good results in wet wrinkle test. Mowilith DC has very good results in the washing test.

Also, Mowilith DC provides very good results in terms of adhesive power, but the invention is not limited to a particular adhesive.

According to an exemplary implementation of the invention, the adhesive is not present as fibers or in particulate form.

The addition of the adhesive security tape can in particular be achieved by a coating process, for example a coating, or by processes from printing techniques a paper base after its manufacture, e.g. coating air knife, gravure, screen printing, curtain coating, flexography, among others. The coating of the adhesive, for example a fibrous sheet used in the manufacture of the tape, can be done for example in an amount of 2 to 15 g / m 2 per side, preferably between 3 and 8 g / m 2 face.

The sealing temperature may vary between 70 and 135 0 C, for example, according to the adhesive used, and sealing may take place during the drying of the security sheet. The coating may be carried at least partially heart, that is to say reach deep or in full on tape or on the surface. Preferably, the coating is carried on the carrier for the manufacture of the tape before cutting the support. Alternatively, the coating may be performed during manufacture of the carrier for the manufacture of the tape.

The coating may be performed on one side of the support or on both sides of the support. The adhesive can fully cover the face on which it is deposited.

The incorporation of the adhesive tape may also be by impregnation, by immersing the ribbon or carrier for the manufacture in a bath.

In an exemplary implementation of the invention, coating a fibrous sheet of 20 g / m 2 having undergone treatment resistance in the wet state (REH), with an adhesive in aqueous phase in an amount of 5 g / m 2 per side, using a gravure method, for example. This provides a good compromise between power and adhesion amount of coated material.

In order to detect the presence of the adhesive in a security sheet according to the invention, it is possible to observe the adhesive, eg heat-sealing varnish, in the form of bubbles, for example using a scanning electron microscope (SEM). substratum

The term "substrate" refers to a fibrous sheet may in particular comprise one or more fibrous layers. In particular, the term use "jet" to refer to continuous layers produced on the same paper machine and associated wet.

The substrate may include at least one security element as described above, for example selected from tracers, in particular nanoscale, security fibers, in particular metallic, magnetic (soft-magnetic and / or hard), or absorbent or excitable in the ultraviolet (UV), visible or infrared (IR) and in particular near-infrared (NIR), the food safety elements and relatively small size such as flakes, pigments or agglomerates including absorbent or pigments in excitable Laser illumination or in the ultraviolet (UV), visible or infrared (IR), in particular near-infrared (NIR), and security son (usually based on plastics, in particular of polyester) including a coating at least partially metallic, metallic, iridescent or magnetic (soft-magnetic and / or hard), the coating can in particular comprise units positive or negative and the reasons can in particular be obtained by demetallization, chemical or biochemical reagents antifalsification and / or authentication and / or identification that may include reacting with at least one respectively falsification agent and / or authentication and / or identification and the optically variable elements, in particular holograms, liquid crystals, iridescent pigments or mirror effect structures, in particular of the dielectric layers, and combinations thereof.

The fibrous substrate may in particular comprise security elements visible to the naked eye but may also include markers which are in the form of active material, of particles or of fibers, capable of generating a specific signal when these tracers are subjected to an optronic excitation, electrical, magnetic or electromagnetic. These "markers" are identifiable substance with a distinctive property and used to mark an item (a security document in this case) and its follow-up, monitoring of its evolution or allow its recognition, its authenticating or identification. The dielectric mirror structures consist of alternating high and low index layers, for example respectively dioxide hafnium and silicon dioxide, and can in particular be obtained by ion etching.

In a particular embodiment of the invention, the fibrous substrate comprises at least one chemical or biochemical reagent antifalsification and / or authentication and / or identification of colored responsive manner, with at least one respectively falsification agent and / or authentication and / or identification.

The fibrous substrate may be based on fibers as described above for the ribbon.

In a particular embodiment of the invention, the fibrous substrate and the ribbon are made of the same fibers, i.e. that the fiber composition is the same in nature and preferably in the same proportions, this allows a good affinity between the two components and can, moreover, be an additional means of authentication. Safety Sheet

The invention also provides, in another of its aspects, a sheet having a fibrous tape partially embedded into a fibrous substrate made using a single ply paper machine, the tape having at least one side, which is located recessed or projecting with respect to the vellum of the sheet and which is not completely covered by the substrate.

The invention also relates to, according to another of its aspects, a sheet having a fibrous tape and a fibrous substrate, at least one security element being disposed at the ribbon, in particular superimposed on the tape and having a thickness which is compensated at least partially by a difference in thickness between the tape and the vellum of the sheet and / or an opening of the tape.

The invention also relates to, according to another of its aspects, a sheet having first and second fibrous plies juxtaposed therebetween, the first ply comprising a tape, fiber or not, forming a reduced thickness on the first face jet opposite to the second jet and the second jet having an aperture which is superimposed at least partially, preferably exactly, with an opening of the tape.

The invention also relates to, according to another of its aspects, a sheet comprising two fibrous plies juxtaposed therebetween, each jet having a tape, fiber or not, each forming a reduced thickness on each side of non-contiguous jets therebetween, each tape having an aperture, the apertures overlapping at least partially, preferably exactly.

The invention also relates to, according to another of its aspects, a sheet comprising two fibrous plies juxtaposed one another, each comprising a tape, fiber or not, each creating a reduced thickness, the sub-layers being superimposed at least partially , preferably exactly, therebetween, so as to provide a cavity between the jets can accommodate another tape, fiber or not.

The invention also relates to, according to another of its aspects, a sheet comprising a fibrous substrate having two ribbons, fibrous or not, forming two over-thicknesses on the surface of the sheet, the strips being spaced apart from the other so as to place a securing element between the two ribbons.

The sheet may be obtained by the method described above. In particular, the sheet may have any of the characteristics mentioned above. Security document

The invention also relates to a security document comprising such a sheet as defined above. This document can be manufactured by cutting, association, binding, laminating, gluing and / or lamination of the sheet.

Specifically, the security document may be a means of payment, such as a bank note, a check or a restaurant ticket, an identity document such as an identity card or a visa or a passport or driver's license, a lottery ticket, a ticket or a ticket to cultural or sporting events. Article authenticating

The invention also relates to an article to be authenticated having such a sheet as defined or previously obtained, the article being selected from a security tag, a package, especially a package for medicines or foods or cosmetics or fragrances or for electronic parts or for spare parts, a sheet used in the medical or hospital field, including paper used for sterilization packages and even an art paper.

The invention can be better understood on reading the following, the description of non-limiting examples of implementation of the invention and the appended figures of the drawing, schematic and partial, in which: Figure 1 illustrates, in section, an example of incorporation of the tape according to the invention, figures 2 and 3 illustrate, in section, of other examples of incorporation of the tape according to the invention, figures 4 to 10 show, in section , leaves of examples according to the invention, - Figure 11 shows, in top view, the sheet of Figure 10, Figure 12 shows, in bottom view, the sheet of Figure 10, and figures 13 to 15 show, in section, of the sheets of variants according to the invention.

There is illustrated in section in Figure 1 an example of incorporation of a tape 3 in a process for manufacturing a sheet 1 according to the invention.

The method is implemented on a paper machine, partially shown, equipped with a lifter cylinder 40 and a round shape 4, partially immersed in a fiber suspension 5, and allows the formation of a sheet 1 having a jet a fibrous substrate 2 and a fiber ribbon 3.

In this example, the fiber tape 3 is brought into direct contact with the cylinder mold 4 by one 9 of the front faces to penetrate into the fiber suspension 5 for forming the substrate 2.

In this manner, no fiber of the fibrous suspension 5 can be deposited on the face 9 of the tape 3 in contact with the vat 4, in particular the fact that the face 9 fills holes of the forming fabric of the vat 4 . the surface 9 of the ribbon 3 can then be visible on the sheet 1 after fabrication. Thus, only the face 6 of the tape 3 opposite to the vat 4, can be covered or not by the fibers of the fibrous suspension 5.

The ribbon 3 can have been treated on at least a portion of the face 6 preventing deposition of fibers of the fibrous suspension 5.

One or more sub-layers or thicknesses may be formed at the tape 3 and one or more security elements can be applied at the strip 3, in particular superimposed sub-layers or juxtaposed with thickenings.

After formation of the sheet 1 on the cylinder 4 and dewatering of the fibrous slurry on the canvas 5 of the vat 4, the sheet 1 may be pressed and dried according to the current papermaking process.

According to an advantageous embodiment of the invention, the sheet 1 obtained before drying is married to wet with other jets whose fibrous compositions may be the same or different and which may be formed on table paper machines flat, in forming roll or round shape. Is illustrated in Figure 2 another example of incorporating a tape 3 in a manufacturing process of a sheet 1 according to the invention.

The method may for example be implemented on the same paper machine as that shown in Figure 1.

In this example, the ribbon 3 is introduced near the vat 4 in the fibrous suspension 5 so that the fibers have already been deposited on the cylinder 4.

In this way, none of the surfaces 6 and 9 of the ribbon 3 is in contact with the vat 4. The tape 3 is in contact with the fibers which have already been deposited on the cylinder 4 before insertion of the tape 3 in the suspension 5. the fibrous face 9 of the strip 3 can then not be visible on the sheet 1 after fabrication.

Thus, the two faces 6 and 9 of the strip 3 may be covered, at least partially of fibers of the fibrous suspension 5. It is possible to obtain one or more sub-layers or extra thickness at the strip 3 by any of the previously described ways.

One or more security elements can be incorporated at or near the sub-layers or over-thicknesses.

After formation, the sheet 1 may be treated in the same manner as described above.

Is illustrated in figure 3 the possibility of incorporating the tape 3 in the sheet 1 by bringing it into contact with the jet 2a formed on the cylinder 4 at the outlet of the trough-shaped.

The ribbon 3 can be inserted between the 2a jet emerging from the trough-shaped and a jet 2b can be achieved by any means papermaking.

In this case, a thickness can be formed on the sheet 1 at the strip 3, this extra thickness forming a projection, for example on the outer side 2b of the jet and / or stream 2a.

Is shown in section in Figures 4 and 5 are examples of sheets 1 obtained by a process according to the invention.

4 illustrates a sheet 1 that can be obtained by the method illustrated in Figure 1.

The sheet 1 comprises a ribbon 3, the surface 9 not covered fibers of the fibrous suspension 5 and thus remains visible on the sheet 1. The ribbon 3 may have a thickness less than that eR e vellum of the sheet

1 or may have undergone a pre-specific treatment. In this way, a reduced thickness 7 is created on the sheet 1 at the strip 3.

In this particular example, the thickness e of the sheet 1 of vellum is greater than the total thickness e 2 of the sheet 1 in the sheet 1 of FIG region where the tape 3, this thickness e 2 corresponding for example to the thickness e R of the ribbon 3.

The thickness e of the vellum of the sheet 1, including the substrate 2, is the sum of the thickness e 2 and the .DELTA.E value "of the sub-thickness 7. Figure 5 shows a sheet 1 obtainable by the method illustrated in Figure 2.

The sheet 1 comprises a ribbon 3, the surface 9 is completely covered with fibers of the fibrous suspension 5 and is thus not visible on the sheet 1. The ribbon 3 may have a thickness less than that eR e vellum of the sheet

1 or may have undergone a pre-specific treatment. In this way, a reduced thickness 7 is created on the sheet 1 at the strip 3.

In this particular example, the thickness e of the sheet 1, including the substrate 2, is greater than the thickness e 2 of the sheet 1 which contains the tape 3. The thickness e is in particular equal to the sum of the .DELTA.E value "of reduced thickness 7 and the thickness e 2 of the sheet 1 which contains the ribbon 3, the latter being in turn equal to the sum of the thickness e R of the ribbon 3 and the thickness e 3 of the fibers of the fibrous suspension 5 in contact with the face 9 of the strip 3.

The sub-layers 7 created may allow the incorporation of one or more security elements on the sheets 1 of Figures 4 and 5.

In the examples described above and below, the various thicknesses may be equal to the aforementioned values.

In particular, the thickness E R of the ribbon 3 may be greater than 10 .mu.m, preferably between 20 and 120 .mu.m and more preferably between 30 and 80 .mu.m. The .DELTA.E value "of reduced thickness 7 may be greater than or equal to 15 .mu.m, preferably 30 .mu.m, preferably 60 .mu.m.

There is shown in Figure 6 an example of sheet 1 can for example be obtained by the method illustrated in Figure 1.

The sheet 1 comprises a ribbon 3 at which a reduced thickness FIG 7. The strip 3 comprises an electronic device 20, in particular in the form of an RFID device, for example incorporated in the tape 3 during manufacture of the ribbon 3.

One or more security elements can be incorporated into the sheet 1 at the face 6 of the tape 3, in particular to protect the electronic device 20.

In addition, a second jet or film may overlie the substrate 2 on the side of the face 6 of the strip 3 in order to protect the electronic device 20.

In this example, the thickness e 2 of the sheet 1 which contains the strip 3 corresponds to the thickness E R of the ribbon 3. Figure 7 illustrates another example of sheet 1, wherein the strip 3 comprises an electronic device 20 , in particular in the form of an RFID device, which is fixed, for example by gluing, on the face 6 of the strip 3.

The electronic device 20 has, for example, a width substantially equal to the width of the strip 3.

The .DELTA.E value "of reduced thickness 7 can for example fully compensate eo thickness of the electronic device 20.

The thickness Q 2 of the sheet 1 which contains the ribbon 3 may be equal to the sum of the thickness eo of the electronic device 20 and eR thickness of the tape 3. Shown in Figure 8 an example of sheet 1 obtainable by the method illustrated in Figure 1.

In this example, the ribbon 3 has a thickness greater than that eR e vellum of the sheet 1 and thereby, an over-thickness 8 is created at the face 6 of the ribbon 3. The over-thickness 8 may have a + .DELTA.E value which corresponds to the difference between the thickness e R of the ribbon 3 and the thickness e of the vellum of the sheet 1. the thickness Q 2 of the sheet 1 which contains the strip 3 corresponds to the thickness eR the ribbon 3.

The .DELTA.E value + the over-thickness 8 may be less than 20 .mu.m.

The ribbon 3 can advantageously comprise polyethylene fibers.

Following a hot embossing of the face 6 of the ribbon 3, polyethylene fibers melt and can be made transparent.

In this way, it is possible to create a relief 11 at the particular area of ​​the face

6 of the tape 3 that can suppress the over-thickness 8 previously existing. The embossing may for example allow to obtain a substantially planar surface 6 of the strip 3 and substantially in the extension of the substrate 2 or to achieve a window or opacity band reduced without obtaining a difference in thickness with respect to the substrate .

It is also possible to obtain a transparentizing the face 6 of the ribbon 3 that can help create visual effects observable in both reflection and transmission.

In addition, the relief created 11 also provides tactile effects at the face 6 of the strip 3.

There is shown in Figure 9, a sheet 1 comprising two plies 2a and 2b. The jet 2a carries the ribbon 3, the latter for example having been incorporated into the jet 2a according to the method described above with reference to Figure 1.

The second ply 2b is for example attached to the first ply 2a of the side thereof which is opposite to the sub-thickness 7. The second roll 2b may comprise, as illustrated, an aperture, e.g., a window 22b, which may come overlap with an opening, for example a window 22a, the ribbon 3.

The reduced thickness 7 can accommodate a security element 21 and the presence of the window 22b superimposed on the window 22a can permit viewing of the inner face 21a of the securing element 21 from the outer face of the ply 2b. To manufacture the sheet 1 shown in Figure 9 can be manufactured the first ply 2a with the strip 3 and perform the wet marriage of the first and second streams 2a and 2b. The assembly formed by the two plies 2a and 2b and of the strip 3 may be perforated so as to create the openings 22a and 22b and the securing element 21 can be laminated with the first roll 2a so as to be superimposed on the tape 3 and for example to assemble it. In a variant not shown, the second jet 2b does not include the aperture

22b, but may for example include an ink printing to the transparentiser.

The security element is for example a transparent film 21 thicker than the transparent films commonly used in the prior art.

The transparent film 21 may be brought online, for example between two papermaking jets or a single jet when the latter is sufficiently formed. It may alternatively be brought offline, for example by a lamination process and / or lamination.

The transparent film 21 may for example be made of polyester stretched or stretched polycarbonate, and may have a thickness are greater than or equal to 30 microns, preferably greater than or equal to 40 .mu.m. The transparent film 21 may also include patterns, obtained for example by laser etching or by intaglio printing on the transparent film 21.

The transparent film 21 may also be an ink, a varnish or a resin.

In the non-illustrated case where the tape comprises an electronic device, the transparent film 21 can be used to protect the electronic device. The transparent film 21 may also be made of a bonded textile or fixed in the reduced thickness 7. In this example, the thickness of the transparent film 21 are substantially corresponds to the .DELTA.E value "of reduced thickness 7, by being example, equal to 40 microns. the jet 2a may for example have a thickness e of 115 .mu.m. There is shown in Figure 10 an embodiment of a sheet 1 variant according to the invention having two plies of paper 2a and 2b each having a corresponding tape 3a and 3b, these tapes 3a and 3b for example having been introduced into the corresponding jet according to the method described with reference to FIG 1.

Each jet 2a and 2b respectively has a corresponding reduced thickness 7a and 7b connected to the respective presence of the strip 3 a and 3b. In the example shown, the two plies 2a and 2b are assembled in such a way that the sub-layers 7a and 7b formed in the respective substrates are directed toward opposite sides of the sheet 1.

Each sub-thickness 7a or 7b accommodates a corresponding security element 21 or 23. The respective thicknesses and es es' of the security elements 21 and 23 correspond, for example substantially Sub-layers 7a and 7b.

Tapes 3a and 3b may each comprise a corresponding aperture 22a and 22b, these openings may overlap at least partially, preferably exactly.

The security elements 21 and 23 are preferably not completely opaque, to allow to observe in show-special effects, over and through openings 22a and 22b.

The transparent film 21 may for example have a thickness of 20 .mu.m are. The transparent film 23 may for example have a thickness es' 15 microns. The ribbon 3 can for example have a thickness of 60 .mu.m eR. The .DELTA.E values "and .DELTA.E" 'sub-layers 7 can respectively are completely offset the thicknesses and are' films 21 and 23. The thickness e of the vellum of the sheet 1 may correspond to the sum of thicknesses and are es' films 21 and 23 and eR thicknesses a and erb tapes 3a and 3b.

In a particular embodiment, the transparent films 21 and 23 may be fluorescent with different colors.

The transparent films 21 and 23 can afford to get the optical effects described above. They may for example include the reasons for observing other grounds by moiré effects and / or combinational. In the examples of Figures 9 and 10, one or more security elements 21 and 23 could alternatively extend at least partially in one or more openings 22a and 22b, although not shown.

Figures 11 and 12 are respectively a top view and a bottom view of the sheet 1 of Figure 10.

In these two figures, one can then observe-through at the openings 22a and 22b a color that corresponds to the sum of the colors of the two transparent films 21 and 23.

However, apart from openings 22a and 22b and still at the strip 3, it is observed the color of the transparent film 21 in the case of Figure 11 and the color of the transparent film 23 in the case of Figure 12.

13 shows an alternative embodiment in which the sheet 1 has two plies 2a and 2b each having a corresponding tape 3a and 3b having been created a corresponding reduced thickness 7a and 7b. In the example of this figure, the two plies 2a and 2b are assembled with the sub-layers 7a and 7b facing one another so as to provide between the two jets a cavity which can accommodate, as shown, a third strip 3c.

2a and 2b each jet can be achieved with the tape 3a and 3b corresponding 3c and the third strip may be introduced between the rolls at the time of assembly. The third strip 3c may be any safety feature.

There is shown in Figure 14 an alternative embodiment wherein the jet of the substrate 2 is formed in contact with a round shape, the canvas comprises an R T terrain for making a hollow 50 on the substrate 2.

The ribbon 3 is incorporated into the fiber suspension after a certain thickness e 3 is accumulated on the R relief of the fabric T. The result is a paper ply having the tape 3 on the side under-thickness 7 and the side also opposite a sub thickness 50, related to the presence of the relief A.

The jet thus produced can accommodate the reduced thickness 7 while security element, like the examples previously described. There is shown in Figure 15, a sheet 1 in which the substrate 2 bears two strips 3 which are spaced by a distance d ranging for example from 3 to 20 mm. The thickness e3 of each tape substrate 3 is the same as shown, but may alternatively be different, if the strips are introduced in contact with the fibers accumulated on the round wire at different locations and / or the ribbon thicknesses 3 are different. In the example considered, the strips 3 each form a high thickness .DELTA.E + and the space 60 formed between the thickenings created by ribbons 3 accommodates a security element 21 which can be any one, in particular one of those mentioned above .

This security element 21 has a thickness es which is for example less than or equal .DELTA.E +, so as to be protected vis-à-vis a collapse due to the presence of the strips 3.

Of course, the invention is not limited to the embodiments described above.

In the examples described above, the one or more ribbons of the sheet according to the invention are fibrous. Alternatively, this or these strips may be non-fibrous, for example, be of synthetic ribbons, for example formed by cutting thermoplastic films.

The expression "comprising a" is synonymous with "comprising at least one."

Claims

1. A method for manufacturing by papermaking technique from a sheet (1) having at least one jet (2a, 2b) of a fibrous substrate (2) and at least one strip (3, 3a, 3b), wherein the tape (3, 3a, 3b) is introduced: a) a fibrous suspension (5) of a cylinder mold paper machine (4) for the formation of the jet (2a, 2b), or b) in direct contact with the round shape (4), or c) in contact with the jet (2a, 2b) formed on the ribbon feed point (3, 3a, 3b) being selected so as to create at least one sub-thickness (7) or a thickened portion (8) on the sheet (1) at the strip (3, 3a, 3b), the sub-thickness (7) being due to a reduction in the dewatering of the fiber suspension (5) by the tape ( 3, 3a, 3b), at least one security element (21, 23) being incorporated at the sub-thickness (7), the thickness (es, es) is at least partially offset by the reduced thickness (7) or being juxtaposed with the strip (3, 3a, 3b) at the thickened portion (8) , The security element (21) having a thickness at least partially offset by the thickened portion (8).
2. The method of claim 1 the strip (3, 3a, 3b) being brought into direct contact with the vat (4), by one of its faces (9), before penetrating into the fibrous suspension (5 ).
3. The method of claim 1 the strip (3, 3a, 3b) being introduced into the fibrous suspension (5), while the fibers have already been deposited on the cylinder (4) at the point of introduction of the tape (3 , 3a, 3b).
4. The method of claim 1 the strip (3, 3a, 3b) being brought into contact with the jet (2a, 2b) formed of the fibrous substrate (2).
5. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) being fibrous.
6. A method according to any one of the preceding claims, wherein the jet (2a, 2b) of paper formed on the cylinder (4) and comprising the strip (3, 3a, 3b) being joined at the wet end of the machine paper with another jet (2a, 2b) of paper which is superimposed to the tape (3, 3a, 3b).
7. A method according to any one of the preceding claims, wherein the jet (2a, 2b) of paper formed on the cylinder (4) and comprising the strip (3, 3a, 3b) being joined by cons-bonding with another jet (2a, 2b) of paper which is superimposed to the tape (3, 3a, 3b).
8. A method according to any preceding claim except claim 4, the strip (3, 3a, 3b) having at least one of its faces (6, 9) not completely covered by the fibers of the fibrous suspension (5) to the output of the paper machine cylinder mold (4).
9. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) having a thickness (eR) less than the thickness (e) of the vellum of the sheet (1).
10. A method according to any one of claims 1 to 8, the strip (3, 3a, 3b) having a thickness (eR) greater than the thickness (e) of the vellum of the sheet (1).
11. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) is subjected to embossing, in particular hot embossing, in particular at a thickened portion (8).
12. A method according to any preceding claim, the sub-thickness (7) having a value (Δe-) greater than or equal to 15 .mu.m, in particular 30 microns or 60 microns.
13. A method according to any one of claims 1 to 11, the thickened portion (8) having a value (.DELTA.E) less than or equal to 20 .mu.m.
14. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) is a paper tape.
15. A method according to any preceding claim except claim 5, the strip (3, 3a, 3b) having non-fibrous elements.
16. A method according to any preceding claim, the tape
(3, 3a, 3b) having a width of between 2 and 60 mm, preferably between 4 and 30 mm and more preferably between 10 and 20 mm.
17. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) having a thickness (eR, ERA, ERB) greater than 10 microns, preferably between 20 and 120 .mu.m, and more preferably between 30 and 80 .mu.m.
18. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) having an electronic device (20), in particular an integrated microcircuit device, in particular an RFID device.
19. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) having at least one adhesive including a heat-sealing agent.
20. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) being made from a material having undergone resistance treatment beforehand wet (REH).
21. A method according to any one of the preceding claims, wherein the strip (3, 3a, 3b) having one or more openings (22a, 22b).
22. A method according to any preceding claim except claim 13, the sheet having on either side of the strip (3, 3a, 3b) a sub-thickness (7) which extends at least partially at least one security element (21, 23). 23. Method according to the preceding claim, the security elements (21,
23) having a film extending parallel to the strip (3, 3a, 3b) in contact therewith.
24. Method according to the preceding claim, the strip (3, 3a, 3b) having an opening (22a, 22b), the security elements (21, 23) being observable in transmitted at the strip (3, 3a, 3b ).
25. A method according to any preceding claim except claim 13, at least one electronic device (20), in particular an integrated microcircuit device, being at least partially housed in the sub-thickness (7), the sub- thickness (7) which compensates at least partially the thickness (ed) of the electronic device (20).
26. Sheet (1) comprising a strip (3, 3a, 3b) and a fibrous substrate (2), at least one security element (21, 23) being placed at the strip (3, 3a, 3b), including superimposed on the tape (3, 3a, 3b) and having a thickness (ES, ES ') which is compensated at least partially by a difference in thickness between the strip (3, 3a, 3b) and the vellum of the sheet (1) and / or an aperture (22a, 22b) of the strip (3, 3a, 3b).
27. Sheet according to the preceding claim, the strip (3, 3a, 3b) being fibrous.
28. A security document comprising a sheet (1) as defined in claim 26 or 27.
EP09742257A 2008-04-11 2009-04-07 Method for producing a sheet with a thick or thin section at the level of a ribbon and corresponding sheet Pending EP2268865A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0852472A FR2929962A1 (en) 2008-04-11 2008-04-11 Method for manufacturing sheet comprising sub-thickness or super-thickness at ribbon and associated sheet
PCT/FR2009/050594 WO2009136059A2 (en) 2008-04-11 2009-04-07 Method for producing a sheet with a thick or thin section at the level of a ribbon and corresponding sheet

Publications (1)

Publication Number Publication Date
EP2268865A2 true EP2268865A2 (en) 2011-01-05

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EP09742257A Pending EP2268865A2 (en) 2008-04-11 2009-04-07 Method for producing a sheet with a thick or thin section at the level of a ribbon and corresponding sheet

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US (1) US20110056638A1 (en)
EP (1) EP2268865A2 (en)
BR (1) BRPI0911661A2 (en)
CA (1) CA2720661A1 (en)
FR (1) FR2929962A1 (en)
WO (1) WO2009136059A2 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7892993B2 (en) 2003-06-19 2011-02-22 Eastman Chemical Company Water-dispersible and multicomponent fibers from sulfopolyesters
US20040260034A1 (en) 2003-06-19 2004-12-23 Haile William Alston Water-dispersible fibers and fibrous articles
US8513147B2 (en) 2003-06-19 2013-08-20 Eastman Chemical Company Nonwovens produced from multicomponent fibers
DE102005022018A1 (en) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Security paper and process for its production
FR2907136B1 (en) * 2006-10-12 2010-01-15 Arjowiggins Security tape, sheet and security document comprising it and method of incorporating it
FR2929962A1 (en) * 2008-04-11 2009-10-16 Arjowiggins Licensing Soc Par Method for manufacturing sheet comprising sub-thickness or super-thickness at ribbon and associated sheet
US8512519B2 (en) 2009-04-24 2013-08-20 Eastman Chemical Company Sulfopolyesters for paper strength and process
US8585956B1 (en) 2009-10-23 2013-11-19 Therma-Tru, Inc. Systems and methods for laser marking work pieces
FR2959581B1 (en) 2010-04-28 2012-08-17 Arjowiggins Security Fibrous insert consists of a single layer and equipped with an electronic device with contactless communication.
US20120178331A1 (en) * 2010-10-21 2012-07-12 Eastman Chemical Company Nonwoven article with ribbon fibers
US20120183861A1 (en) 2010-10-21 2012-07-19 Eastman Chemical Company Sulfopolyester binders
FR2978580B1 (en) 2011-07-28 2013-08-16 Arjowiggins Security Method for controlling the physical state of a document
US8871052B2 (en) 2012-01-31 2014-10-28 Eastman Chemical Company Processes to produce short cut microfibers
EP2692539A1 (en) * 2012-07-31 2014-02-05 Fábrica Nacional De Moneda Y Timbre Laser heat-treated cellulose element, security paper comprising said element, security document comprising said paper and method for embedding a cellulose element in a security paper
AU2012387659A1 (en) 2012-08-17 2015-02-26 Visual Physics, Llc A process for transferring microstructures to a final substrate
US10173453B2 (en) 2013-03-15 2019-01-08 Visual Physics, Llc Optical security device
US9303357B2 (en) 2013-04-19 2016-04-05 Eastman Chemical Company Paper and nonwoven articles comprising synthetic microfiber binders
US9873281B2 (en) 2013-06-13 2018-01-23 Visual Physics, Llc Single layer image projection film
US9605126B2 (en) 2013-12-17 2017-03-28 Eastman Chemical Company Ultrafiltration process for the recovery of concentrated sulfopolyester dispersion
US9598802B2 (en) 2013-12-17 2017-03-21 Eastman Chemical Company Ultrafiltration process for producing a sulfopolyester concentrate
RU2687171C9 (en) 2014-03-27 2019-07-22 Визуал Физикс, Ллс An optical device that produces flicker-like optical effects
US10189292B2 (en) * 2015-02-11 2019-01-29 Crane & Co., Inc. Method for the surface application of a security device to a substrate
RU2641138C2 (en) * 2015-11-16 2018-01-16 Федеральное государственное унитарное предприятие "18 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации Method of producing polymer film with discrete luminescent dyeing for paper anti-falsification tools

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN157644B (en) * 1981-02-19 1986-05-10 Portals Ltd Method of making fibrous sheet materials and fibrous sheet materials produced thereby
US4437935A (en) * 1981-06-03 1984-03-20 Crane And Company Method and apparatus for providing security features in paper
DE3265421D1 (en) * 1981-07-13 1985-09-19 Portals Ltd Paper incorporating a partially embedded strip, methods for making paper and security documents
US4534398A (en) * 1984-04-30 1985-08-13 Crane & Co. Security paper
GB2250474B (en) * 1990-12-04 1994-04-20 Portals Ltd Security articles
SE500384C2 (en) * 1992-11-11 1994-06-13 Tumba Bruk Ab Process for the production of paper and pressure value produced thereof
FR2702228B1 (en) * 1993-03-02 1995-04-14 Arjo Wiggins Sa security sheet having the security elements preventing reproduction, recognizable in transmitted and reflected light and a manufacturing method thereof.
ES2142937T5 (en) * 1993-03-02 2006-07-16 Arjowiggins Security Security role that includes localized areas of reduced thickness and opacity and its manufacturing procedure.
DE4344298A1 (en) * 1993-12-23 1995-06-29 Giesecke & Devrient Gmbh Security paper with a thread-like or ribbon-shaped security element
FR2741089B1 (en) * 1995-11-10 1997-12-26 Arjo Wiggins Sa Safety sheet of substantially constant thickness
GB9828770D0 (en) * 1998-12-29 1999-02-17 Rue De Int Ltd Security paper
FR2804448B1 (en) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Security paper having a security zone, method for making a paper and such device for carrying out this method
FR2804447B1 (en) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Paper with a watermark has multitone effect and canvas to make this paper
FR2827986B1 (en) * 2001-07-30 2004-04-02 Arjo Wiggins Sa Method for manufacturing an article comprising a fibrous layer and at least one electronic chip, and article thus obtained
GB2381539B (en) * 2001-11-05 2003-11-05 Rue De Int Ltd Paper incorporating a wide elongate impermeable element, and a method of makingof the same
DE10163381A1 (en) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Security paper and method and device for its production
GB2388377B (en) * 2002-05-09 2004-07-28 Rue De Int Ltd A paper sheet incorporating a security element and a method of making the same
ES2241925T3 (en) * 2002-05-14 2005-11-01 Georgia-Pacific France Market procedure of a paper sheet that has a filigran type reason.
FR2839917B1 (en) * 2002-05-22 2004-10-08 Arjo Wiggins Article formed from at least one jet of fibrous material comprising at least one zone of zero thickness and method for manufacturing said article
GB2390056B (en) * 2002-06-25 2005-08-31 Rue Internat Ltd De La Improvements in substrates
GB2395724B (en) * 2002-11-28 2004-11-10 Rue De Int Ltd Method of manufacturing a fibrous substrate incorporating an electronic chip
GB0409736D0 (en) * 2004-04-30 2004-06-09 Rue De Int Ltd Improvements in substrates incorporating security device
FR2873134B1 (en) * 2004-07-15 2011-07-15 Arjowiggins Knitted structure intended to be incorporated in sheet material and sheet material incorporating such a structure
DE102005032815A1 (en) * 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Method for producing a security paper, paper screen and forming element for paper screen
FR2889853B1 (en) * 2005-08-16 2007-10-12 Arjowiggins Soc Par Actions Si Sheet material and method of manufacture
GB0525886D0 (en) * 2005-12-20 2006-02-01 Rue De Int Ltd Improvements in security substrates
FR2918679B1 (en) * 2007-07-11 2017-12-01 Arjowiggins Licensing Sas Method for manufacturing sheet material
FR2925535B1 (en) * 2007-12-21 2011-05-06 Arjowiggins Licensing Sas Safety sheet comprising a fibrous substrate comprising at least one watermilk
FR2927841A1 (en) * 2008-02-26 2009-08-28 Arjowiggins Licensing Soc Par Safety sheet comprising a pelable tape for revealing a masked information, and method of manufacturing the same
ES2325568B1 (en) * 2008-03-07 2010-06-16 Fabrica Nacional De Moneda Y Timbre- Real Casa De La Moneda Security paper, manufacturing method and security document obtained with such paper.
GB2458917B (en) * 2008-04-01 2011-08-24 Rue De Int Ltd Improvements in security substrates
FR2929962A1 (en) * 2008-04-11 2009-10-16 Arjowiggins Licensing Soc Par Method for manufacturing sheet comprising sub-thickness or super-thickness at ribbon and associated sheet
FR2929965B1 (en) * 2008-04-11 2010-05-21 Arjowiggins Licensing Sas Security sheet having a ribbon having a reduced operating area.
FR2940179B1 (en) * 2008-12-23 2017-06-02 Arjowiggins Security document comprising at least one combined image and a revelation means, and associated method.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009136059A2 *

Also Published As

Publication number Publication date
FR2929962A1 (en) 2009-10-16
US20110056638A1 (en) 2011-03-10
WO2009136059A3 (en) 2009-12-30
BRPI0911661A2 (en) 2018-09-11
CA2720661A1 (en) 2009-11-12
WO2009136059A2 (en) 2009-11-12

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