EP2331748A1 - Method of manufacturing a ply based on fibrous material, using a strip arranged in a vat - Google Patents
Method of manufacturing a ply based on fibrous material, using a strip arranged in a vatInfo
- Publication number
- EP2331748A1 EP2331748A1 EP09817349A EP09817349A EP2331748A1 EP 2331748 A1 EP2331748 A1 EP 2331748A1 EP 09817349 A EP09817349 A EP 09817349A EP 09817349 A EP09817349 A EP 09817349A EP 2331748 A1 EP2331748 A1 EP 2331748A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jet
- strip
- band
- tank
- forming surface
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/44—Watermarking devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/06—Processes 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/06—Processes 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
- D21F11/08—Processes 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/04—Complete machines for making continuous webs of paper of the cylinder type
- D21F9/043—Complete machines for making continuous webs of paper of the cylinder type with immersed cylinder
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/42—Ribbons or strips
Definitions
- the present invention relates to the field of security documents and relates to a method of manufacturing a jet made of fibrous material, for example mainly paper, using a strip immersed in a tank. It also relates to a document comprising a jet obtained by this method.
- paper means any jet obtained by wet process using a suspension of natural cellulose fibers and / or mineral, vegetable or organic fibers other than cellulose, which may be synthetic fibers, which may contain various fillers and various additives commonly used in stationery.
- obtaining a zone of reduced opacity or a zone of reduced thickness is sometimes desirable in order to allow the creation of particular effects or the incorporation of specific elements.
- a zone of reduced opacity may, for example, make it possible to make transparent a given zone of a security sheet that may for example be printed at the marker or even facilitate the creation of particular effects that may, for example, be visible by observation in transvision.
- the particular effects produced may in particular be complementary impressions on the front and back of the security sheet, the observation of the complementarity of the prints being favored at the level of the reduced opacity zone.
- a zone of reduced thickness may, for example, make it possible to incorporate one or more security elements into a security sheet, in particular a security thread or strip, without generating an over-thickness on the security sheet and problems of flatness of the sheet or even difficult printing steps.
- the invention aims to meet all or part of these needs.
- the subject of the invention is therefore a process for manufacturing a jet made of fibrous material, in which a forming surface is immersed in a suspension of fibrous material contained in a tank, the forming surface being in relative rotational movement with respect to the tank, wherein at least one strip is disposed in the tank so as to modify the deposition of fibrous material on the formation surface and retained relative to the jet and the surface forming such that the stream of fibrous material formed does not comprise the web.
- the band can be held at one end.
- the method according to the invention advantageously makes it possible to create at least one under-thickness on the jet, allowing the formation of a zone of reduced opacity or of reduced thickness, the sub-thickness being in particular due to a reduction in the deposition of material. fibrous by the band.
- the invention it is possible to obtain a jet having at least one sub-thickness that can allow the incorporation of security elements without requiring the use of a specific training fabric or modified, and to obtain also an area of reduced opacity on the jet without creation of over-thickness. Therefore, it is possible to use the training webs that usually equip the paper machines with round shape used for the manufacture of security sheets.
- the method according to the invention can make it possible to obtain zones of reduced thickness whose sub-thickness may be greater than or equal to 10 ⁇ m, preferably between 15 and 30 ⁇ m.
- the method according to the invention can also make it possible to obtain areas of reduced opacity having an opacity index of less than or equal to 80%, preferably less than 50%, according to the ISO 2469 standard.
- variable width can make it possible to obtain sub-thicknesses of variable dimensions as well.
- a variation in the length of the strip may allow a variation in the time during which the strip modifies the deposition of fibrous material on the forming surface, in particular by preventing dripping on the forming surface.
- the longer the length of the band the greater the thickness or the thickness.
- the invention can thus allow continuous control of the under-thickness or thicknesses created by the strip.
- the underlay or thicknesses created may extend all along the jet.
- the band may have a free end located in the tank.
- the band may come into contact with the training surface.
- the strip may come into contact with the forming surface while the latter is not yet covered with fibers of the suspension of fibrous material.
- the contact may in particular be made on an area of the formation surface not immersed in the suspension of fibrous material.
- the strip may still come into contact with the forming surface while fibers have already deposited on the forming surface.
- the fibers may have already deposited on the training surface in whole or in part.
- the face of the web which is in direct contact with the forming surface or fibers of the fibrous material suspension which have already been deposited on the forming surface, can plug the holes in the formation surface and can thus prevent the formation suction against the fibers of the suspension of fibrous material.
- the manufacturing method can be implemented in a twin-jet paper machine.
- the paper machine may comprise for example two round shapes placed in line, a round shape and a flat table, or even a round shape and a forming cylinder ("short form").
- the paper jet formed on the round shape and having at least one sub-thickness can be joined in the wet part of the paper machine with a second paper jet for example superimposed on the under-thickness.
- the second jet can then consolidate the first jet of paper at the level of the under-thickness. It may also constitute a protection for elements present at the level of the under-thickness, for example an electronic device, in particular an integrated microcircuit device, for example an RFID device.
- the positioning of the band in the tank can be done for example by a feeding device, for example such as a peeling system, placed along the width and opening into the tank near the forming surface, before the beginning of the dewatering of the suspension of fibrous material on the formation surface. After draining, a jet can be obtained which can then be pressed and then dried according to the current papermaking process.
- a feeding device for example such as a peeling system
- the jet obtained may optionally be married in the wet state, that is to say before drying, with other jets whose fibrous compositions may be identical or different and which may be formed by a flat table, a forming cylinder or a round shape.
- the jet obtained can for example be joined by laminating with another paper jet superimposed on the under-thickness.
- the method according to the invention may thus comprise the assembly of the first jet with a second jet.
- the placement of the strip in the tank can be carried out in the direction of the jet and thus allow easy introduction of possible security elements, these typically introducing in the same direction during a method of manufacturing a security sheet.
- the creation of at least one sub-thickness may result from a fiber deposition of the suspension of partial or no fibrous material on the forming surface. She can in particular depending on the positioning angle of the strip and / or the length of the strip and / or a coating present on its surface and / or holes (perforations, openings ...) present on the strip.
- the strip may for example be resistant to tearing and / or preferably resistant to moisture, especially water.
- the strip may be made of a material that does not disintegrate in the water.
- the band may in particular be a band of polymer, elastomer, textile, metal or other.
- the strip may be of a rigid material.
- the strip may make it possible to make "dotted lines", in particular by applying the strip against the forming surface and then withdrawing it alternately.
- the rigidity of the band can remove the fibers of the fibrous material already deposited on the forming surface.
- the band may also be of a flexible material. In this way, the strip can be sucked at least partially against the forming surface and can thus prevent dripping on a larger surface.
- the strip may be successively placed and withdrawn in contact with the forming surface, for example at a frequency of between 20 and 200 Hz, preferably between 30 and 60 Hz.
- a person skilled in the art may adapt this frequency to the speed of formation. the paper machine so as to obtain a certain frequency of variations obtained along the fibrous jet and in particular in the running direction of the paper machine (direction of manufacture of the fibrous jet). In this way, it is possible to create several sub-thicknesses on the jet spaced between them regularly or not.
- the band can be permanently stationary relative to the tank during the entire manufacture of the paper jet.
- the band can still be animated with a movement relative to the tank, including an alternating movement.
- the band may for example be animated by a longitudinal movement or lateral movement.
- the frequency can be between 20 and 200 Hz, preferably between 30 and 60 Hz, especially in the case of a longitudinal movement.
- the movement variants of the band can in particular make it possible to create several sub-thicknesses on the jet, of variable shapes, continuous or discontinuous.
- the band can still include openings.
- the training surface may be free of relief on which is placed the band or alternatively to include. Where appropriate, the relief may be formed by embossing the fabric.
- the strip may be arranged so that its center coincides with the center of the relief of the forming surface.
- the forming surface may for example comprise at least one relief forming a watermark, for example superimposed at least partially on the strip. In this way, it may be possible to further accentuate the watermark rendering. The overlap of the band and a watermark may further enhance the safety of the formed stream.
- the forming surface may be free of filigree forming relief, including watermark superimposed on the band.
- the presence of one or more under-thicknesses on the jet formed by virtue of the invention can make it possible to house at least partially one or more security elements.
- the thickness of the security elements is substantially identical to the difference between the thickness of the vellum of the jet and that of the zone of reduced opacity or reduced thickness, it is possible to obtain a jet having substantially no -thickness.
- the method may thus comprise the introduction of a security element in a hollow formed by the strip, in particular a sub-thickness.
- the establishment of the security element can be carried out online on the paper machine or offline, out of the paper machine.
- the security element thus put in place may be a flat element, that is to say an elongated element of small width, in particular consisting of a security thread.
- the under thicknesses obtained may for example have values greater than or equal to 10 ⁇ m, preferably between 15 and 60 ⁇ m, more preferably between 15 and 30 ⁇ m. For example, it is possible to obtain sub-thicknesses greater than or equal to 20 ⁇ m for a substrate with a thickness greater than or equal to 110 ⁇ m.
- the method according to the invention may also include the presence of a second band also retained at one end to modify the deposition of fibrous material on the forming surface.
- the second band may for example be animated with a movement relative to the first.
- the second band may for example be brought into its movement to cross the first.
- the second band can be superimposed at least partially on the first one.
- the second band may be moved longitudinally relative to the first.
- the first and second strips can be perforated.
- the movement of the second band relative to the first may possibly modify the section of the openings that result from the superposition of the two bands.
- the width of the strip may be between 0.1 and 100 mm, preferably between 3 and 30 mm.
- the band may have a variable width and / or a variable thickness.
- the band may have a decreasing width away from its base, for example a triangle shape whose base is retained according to the method of the invention, so as to obtain a specific thickness profile.
- the thickness of the strip may be between 10 ⁇ m and 0.5 mm, preferably between 30 and 200 ⁇ m. Those skilled in the art will be able to adapt the thickness of the strip according to the material used and the desired rigidity.
- the band may have a rectangular cross section.
- the band may or may not be free of reliefs.
- the band may be other than a belt, especially a toothed belt.
- the outer surface of the strip may be continuous or discontinuous.
- the band may comprise two distinct ends not connected to each other.
- the two ends of the strip may be combined to form a loop.
- the method according to the invention may also comprise the incorporation of a ribbon in the jet formed at a sub-thickness formed on the jet.
- the ribbon may be advantageously transparent or translucent.
- the ribbon may for example be made of a tracing paper.
- tracing paper is used in the sense of the present invention, and traditionally in the paper industry, a so-called “natural” tracing paper obtained from an aqueous pulp suspension having undergone a refined refining of the cellulose fibers. that it contains.
- the ribbon may comprise at least one security element.
- the ribbon may for example be secured by visible or non-visible patterns, in positive and / or negative, optically variable devices and in particular holograms, luminescence and in particular fluorescence, magnetism, electrical conduction or still thermochromic.
- the ribbon may comprise a security element chosen from tracers, especially nanometric, security fibers including metallic, magnetic (with soft magnetism and / or hard), or absorbable or excitable in the ultraviolet (UV), visible or infrared (IR) and in particular the near infrared (NIR), flat and relatively small security elements such as boards, pigments or pigment agglomerates especially absorbent or excitable under laser illumination or in the ultraviolet (UV ), the visible or the infrared (IR), in particular the near-infrared (NIR), the chemical or biochemical reagents for tampering and / or authentication and / or identification may in particular react with at least one agent respectively falsification and / or authentication and / or identification, and optically variable elements including holograms, liquid crystals, iridescent pigments or structures mirror effect, in particular dielectric, and combinations thereof.
- tracers especially nanometric, security fibers including metallic, magnetic (with soft magnetism and / or hard), or absorbable or excitable in the
- the presence of a second jet covering the first jet of paper at the ribbon level may constitute a protection for the security elements present on the ribbon.
- the ribbon can be made from synthetic fibers, for example of polyamide or polyester type, preferably uncharged and thus having a low opacity.
- the ribbon may also be made from a composition of polyolefin fibers, for example polyethylene.
- the ribbon may be made from a polymeric material, especially a thermoplastic polymer, for example a transparent or opalescent plastic tape, or slightly opalescent, for example polyester.
- the ribbon may be made from a material, in particular a tracing paper, having previously undergone a wet strength treatment (WER).
- WER wet strength treatment
- the tape may comprise, especially at the surface, an adhesive and more particularly a heat-sealing varnish.
- the ribbon may comprise at least two complementary security elements located respectively on either side of the ribbon and whose complementarity is observable in transvision.
- the security elements are for example respectively located on the front and back of the ribbon.
- the term "complementarity" encompasses any type of optical interaction between security elements.
- “Supplementary security elements” means security features whose observation in transvision gives rise to the observation of a particular effect, for example a pattern produced by the superimposition or by the juxtaposition of the security elements recto / verso, resulting from the complementarity between the security elements.
- This pattern can be an alphanumeric character, a design or logo, for example present elsewhere on the security document formed from the jet.
- observation in transvision is meant an observation of the light which passes through the ribbon in the direction of its thickness, for example in visible, ultraviolet or infrared light.
- the ribbon may comprise a light-diffusing material, for example in the form of an interlayer.
- the diffusing nature of the light can come from the refractive index of the material, its composition, its thickness and / or also its surface irregularities.
- such a ribbon may be placed above a first watermark, located in a first fiber-based jet made according to the invention, and below a second watermark located in a second jet.
- the first watermark is observable in transmitted light, at least partially, only on the side of the first jet
- the second watermark is therefore observable in transmitted light, at least partially, only on the side of the second jet.
- Each of these watermarks is therefore observable in transmitted light, at least partially, when looking at the jet respectively.
- These watermarks are not clearly observable, at least partially, simultaneously in transmitted light on the same side of a sheet comprising the two jets.
- the subject of the invention is also, according to another of its aspects, a document comprising a jet obtained according to the process as defined above.
- the document may for example be chosen from a sheet, a passport, an identity card, a driver's license, an access card, a loyalty card, a photocopy card, a canteen card, a playing card , a card to collect, a way payment, including a payment card or a bank note, a voucher or a voucher, a ticket for access to cultural or sporting events or a certificate of authenticity.
- FIG. 1 illustrates, in section, an exemplary implementation of the method according to the invention
- FIGS. 1a and 1b illustrate, in section, an exemplary variant embodiment of the method according to the invention
- FIG. 2 represents, in section, an example of a sheet obtained according to the method of the invention
- FIGS. 3 to 5 show, in front view, examples of sheets obtained by the process according to the invention
- FIGS. 6 and 7 show, in section, other examples of sheets obtained by the process according to the invention
- invention comprising a ribbon
- FIGS. 8a and 8b respectively show, in front view, the front and back sides of another example of sheet obtained by the method according to the invention.
- FIG. 1 shows, in section along the strip 2, a paper machine for implementing a method of manufacturing a jet 1 according to the invention.
- the paper machine is equipped with a lifting cylinder 7, a raising felt 12 and a round shape having a forming surface 4 immersed in a suspension of fibrous material 5.
- the forming surface 4 is in relative movement with respect to the tank 6.
- a strip 2 for example a rigid or flexible material depending on the purpose as described above, has a free end immersed in the tank 6 and is retained at least temporarily at its end 3, not immersed in the suspension of fibrous material 5 in this example, so that the jet 1 formed does not comprise the band 2.
- the presence of the band 2 in the tank 6 makes it possible to modify the deposition of fibrous material 5 on the forming surface 4, in particular making it possible to create one or more hollow or under-thickness areas defining areas of reduced opacity or reduced thickness.
- the strip 2 is in contact with the forming surface 4 while fibers of the fibrous material suspension 5 have already deposited on the forming surface 4.
- the strip may be brought into contact with the formation surface 4. formation surface 4 whereas no fiber was deposited on the forming surface 4.
- the jet 1 After formation of the jet 1 on the round shape and draining of the fibrous suspension 5 on the fabric of the round shape, the jet 1 can be pressed and then dried according to the current papermaking process.
- the jet 1 obtained before drying can be wet-kneaded with other jets whose fibrous compositions can be identical or different and which can be formed on paper machines with flat table, forming cylinder or round form.
- FIGS. 1a and 1b show, in section, an alternative embodiment of the method according to the invention in which the strip 2 is brought into contact with the forming surface 4 whereas no fiber of the suspension of material fibrous 5 is deposited on the forming surface 4.
- Figure la is a sectional view at the strip 2 and
- Figure Ib is a sectional view outside the strip 2.
- FIG. 1a shows an example of sheet 10 comprising a first jet 1 obtained by the process according to the invention.
- the first jet has a sub-thickness 8 which has been formed by the presence of the strip 2 during manufacture.
- the sheet 10 further comprises a second jet Ib covering the first jet la.
- the second jet Ib has a constant thickness so that the sheet 10 also has a sub-thickness at the sub-thickness 8 of the first jet la.
- FIG. 3 shows an example of a sheet 10 comprising a jet 1 obtained by the process according to the invention.
- the jet 1 has an area 8 of reduced opacity or reduced thickness obtained following the modification of the deposition of fibrous material 5 on the forming surface 4 due to the presence of the strip 2 in the tank 6.
- the zone 8 extends from one edge to the other of the sheet 10 and has a rectangular shape.
- the zone 8 may have a shape and variable dimensions as defined above.
- Zone 8 may allow, for example, the incorporation of one or more security elements, for example a wire, a patch or a foil, which may themselves comprise one or more security elements.
- the incorporation can be done during the manufacture of the sheet 10 or later by a recovery process.
- FIG. 4 represents, in front view, a variant of sheet 10 comprising a jet 1 obtained by the process according to the invention.
- three strips 2 were used during the formation of the jet 1 in order to produce three zones 8 of reduced thickness.
- the zones 8 extend from one edge to the other of the sheet 10 and have identical widths and a rectangular shape.
- FIG. 5 represents, in front view, another variant of sheet 10 comprising a jet 1 obtained by the method according to the invention.
- three bands 2 were also used during the manufacture of the jet 1, the strips having been successively placed and removed in the tank 6 to create discontinuous zones 8 on the jet 1.
- the jet 1 thus comprises three groups of three zones 8 spaced regularly between them in the direction of width and length.
- Figures 6 and 7 show, in section, examples of sheets 10 comprising a jet la made by the method according to the invention.
- the ribbon 9 is partially incorporated in the jet 1a and a second jet Ib comes to cover the first jet 1a so as to be in direct contact with the ribbon 9.
- the ribbon 9 is totally incorporated in the first jet la and a second jet Ib comes to cover the first jet la without being in contact with the ribbon 9.
- FIGS. 8a and 8b show, in front view, the front and back of another example of a sheet 10 comprising a jet made according to the process of the invention, and in FIGS. in section respectively along I-I and H-II of Figure 8a.
- the sheet 10 comprises a first jet la which has an area of reduced thickness 8 in which is placed a ribbon 9.
- the sheet 10 also comprises a second jet Ib coming to cover the first jet la.
- the second jet Ib has for example been cut in a strip, preferably narrower than the ribbon 9, so as to reveal at least partially the back side 9b of the ribbon 9.
- the second jet Ib is advantageously cut into a smaller band. that the ribbon 9 so as to allow better anchoring of the ribbon 9 in the substrate of the sheet 10 formed by the meeting of the jets Ia and Ib.
- the first jet also has an opening 11, for example in the form of a star, at the ribbon 9 showing at least partially the front face 9a of the ribbon 9.
- an opening 11 for example in the form of a star
- the ribbon 9 is only partially covered with fibers on each of its faces at the opening 11, while outside the opening 11, the ribbon 9 is completely covered with fibers on its front face 9a and partially on its reverse side 9b, as can be seen in Figure 10.
- the opening 11 may be made during the manufacture of the first jet la by the presence of one or more reliefs on the forming surface of the round shape, in particular star-shaped.
- the band 2 used for the formation of the under-thickness can be positioned superimposed on the reliefs. Then, the ribbon 9 can be introduced into the first jet la at the level of the under-thickness and the first jet la can be married in the wet state to the second jet Ib, the latter can be cut before or after the marriage of the two jets.
- the ribbon 9 could be transparent or translucent. In this way, it would be possible to observe a transparent window at the opening 11 of the first jet la of each front and back side of the sheet 10.
Landscapes
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0856289A FR2935995B1 (en) | 2008-09-18 | 2008-09-18 | METHOD FOR MANUFACTURING A FIBROUS MATERIAL JET USING A BAND DISPOSED IN A TANK AND DOCUMENT COMPRISING SUCH A JET |
PCT/IB2009/054079 WO2010038163A1 (en) | 2008-09-18 | 2009-09-17 | Method of manufacturing a ply based on fibrous material, using a strip arranged in a vat |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2331748A1 true EP2331748A1 (en) | 2011-06-15 |
Family
ID=40565225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09817349A Withdrawn EP2331748A1 (en) | 2008-09-18 | 2009-09-17 | Method of manufacturing a ply based on fibrous material, using a strip arranged in a vat |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2331748A1 (en) |
BR (1) | BRPI0918928A2 (en) |
CA (1) | CA2737423A1 (en) |
FR (1) | FR2935995B1 (en) |
WO (1) | WO2010038163A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5804323B2 (en) | 2011-01-07 | 2015-11-04 | 株式会社Gsユアサ | Power storage element and power storage device |
FR2984799A1 (en) * | 2011-12-22 | 2013-06-28 | Arjowiggins Security | MULTILAYER STRUCTURE COMPRISING AT LEAST ONE DIFFUSING LAYER |
FR3020596B1 (en) * | 2014-05-02 | 2017-03-10 | Oberthur Fiduciaire Sas | SECURITY DOCUMENT IMPREGNATED WITH A DESOPACIFYING AGENT AND METHOD OF PROCESSING A DOCUMENT |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4314380B4 (en) * | 1993-05-01 | 2009-08-06 | Giesecke & Devrient Gmbh | Security paper and process for its production |
GB0419157D0 (en) * | 2004-08-27 | 2004-09-29 | Rue De Int Ltd | A method of manufacturing a fibrous substrate incorporating an elongate element |
-
2008
- 2008-09-18 FR FR0856289A patent/FR2935995B1/en not_active Expired - Fee Related
-
2009
- 2009-09-17 WO PCT/IB2009/054079 patent/WO2010038163A1/en active Application Filing
- 2009-09-17 EP EP09817349A patent/EP2331748A1/en not_active Withdrawn
- 2009-09-17 CA CA2737423A patent/CA2737423A1/en not_active Abandoned
- 2009-09-17 BR BRPI0918928A patent/BRPI0918928A2/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2010038163A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2737423A1 (en) | 2010-04-08 |
BRPI0918928A2 (en) | 2015-12-01 |
FR2935995B1 (en) | 2011-07-22 |
WO2010038163A1 (en) | 2010-04-08 |
FR2935995A1 (en) | 2010-03-19 |
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