EP1023501B1 - Papier couche comportant un pseudo-filigrane et procede de fabrication - Google Patents
Papier couche comportant un pseudo-filigrane et procede de fabrication Download PDFInfo
- Publication number
- EP1023501B1 EP1023501B1 EP98943968A EP98943968A EP1023501B1 EP 1023501 B1 EP1023501 B1 EP 1023501B1 EP 98943968 A EP98943968 A EP 98943968A EP 98943968 A EP98943968 A EP 98943968A EP 1023501 B1 EP1023501 B1 EP 1023501B1
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- EP
- European Patent Office
- Prior art keywords
- coated paper
- paper
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- region
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- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 52
- 230000008569 process Effects 0.000 claims description 23
- 238000003490 calendering Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000000080 wetting agent Substances 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 5
- 239000007850 fluorescent dye Substances 0.000 claims description 4
- 230000001965 increasing effect Effects 0.000 claims description 4
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 239000004150 EU approved colour Substances 0.000 claims 2
- 229940006093 opthalmologic coloring agent diagnostic Drugs 0.000 claims 2
- 230000001476 alcoholic effect Effects 0.000 claims 1
- 238000005282 brightening Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 13
- 238000009736 wetting Methods 0.000 abstract description 3
- 239000000123 paper Substances 0.000 description 126
- 239000010410 layer Substances 0.000 description 47
- 239000000049 pigment Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000007641 inkjet printing Methods 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 235000015067 sauces Nutrition 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229940082150 encore Drugs 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24612—Composite web or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
Definitions
- the present invention relates to a coated paper comprising at least one pseudo-watermark consisting of a mark giving the said paper a visual effect and a texture resembling those of a watermark.
- the present invention also relates to a method for manufacturing a paper. coated according to the invention.
- Watermarked papers are generally used in the field of security papers such as means of payment like banknotes or checks, and official documents such as passports, stamped papers, notarial acts, because the presence of the watermark limits the possibilities of photocopying and counterfeiting, and offers a means of recognition and / or authentication of said paper.
- the watermark papers are also used in the field of personalized company papers by taking up in the form watermark the company logo, name or brand.
- British patent GB-A-456,746 describes a coated paper having a watermark created by passing an air knife over a stamped area of the paper.
- An object of the present invention is to provide a coated paper comprising pseudo-watermarks consisting of marks which locally modify the physical characteristics of the paper such as its mass volume and therefore certain properties such as its thickness and possibly its opacity.
- Another object of the present invention is to provide a coated paper having pseudo-watermarks consisting of marks which create a contrast in brightness and / or shade with the rest of the coated sheet of paper.
- Another object of the present invention is to provide a coated paper comprising pseudo-watermarks produced without the use of ink or varnish on its surface so that the composition of the paper in the areas constituting the pseudo-watermark is not not significantly changed.
- Another object of the present invention is to provide papers coated with pseudo-watermarks whose usage properties, in particular printability properties in the areas of the paper surface corresponding to the said marks, are not significantly altered compared to blank coated paper.
- Another object of the present invention is to provide a coated paper having pseudo-watermarks which can be produced in variable and small quantities under conditions more economical than by the processes of the prior art and which can be obtained by widths and quantities independent of the characteristics of the coating machine, in particular by a process allowing the implementation of modern coating machines high production capacity without modifying the actual coating operation.
- Another object of the present invention is to provide a coated paper having a pseudo-watermark in which said watermark is produced after the last coating operation, i.e. at the output of the coater, possibly on the finished coated paper, i.e. off-line sleeping.
- said rewetting solution is evaporated and the coated paper is densified in the areas where said solution was initially applied.
- Said zones can then have an opacity contrast (reduction opacity) and / or a contrast of brightness (increase in brightness) and / or a contrast of color especially shade of color (color difference) with the rest of the sheet paper.
- the opacity of the paper is partly linked to the presence of air in the fibrous interstices of the support or pigment interstices of the layer.
- the solution replaces the air in said interstices.
- the solution is evaporated and the fibers and / or the pigment layer being densified, the air gaps occupy overall a reduced volume and in particular are found in lower quantity that initially, which generates a de-opacification.
- the densification of the layer and possibly of the support comes from a reduction thickness of the treated areas compared to the rest of the coated paper, the basis weight and especially the weight of the layer, remaining constant relative to the rest of the paper.
- the surface mass is less in the areas clear because the fibers deposited are in smaller quantity compared to the rest of the sheet.
- the surface mass is not constant because the weight of the layer is reduced in certain areas.
- the contrast of opacity can result from the de-opacification of the layer alone, if the rewetting solution does not penetrate into the support and, in addition, the desopacificaton of the fibrous support if the quantity and nature of the re-wetting solution and / or the composition of the surface layer allow said solution to penetrate the support.
- the rewetting of the surface layer facilitates the rearrangement of the pigments during calendering which can create an increase in gloss depending on the quantity and nature of the rewetting solution and according to the characteristics of the layer. In particular, depending on the size and the shape of the pigments these are more or less rearranged during calendering in step b) and the brightness contrast is more or less observable.
- the determined rewetting zones define surfaces narrow such as fine lines defining characters or letters, the contrast of brightness in observation under reflected light is difficult to observe by an untrained eye.
- the surface layer is a mat layer comprising size and shape pigments such as pigments cannot be rearranged even by calendering, no brightness contrast will be observed in said areas.
- the method of the present invention can also create a modification of the color of the coated paper in said area (s) when said rewetting solution comprises a coloring agent, in particular a tinting coloring agent.
- the contrast of color in the said zone or zones may also result from the modification of the opacity of the surface layer when there is a difference in shade initially between the support and the layer surface and / or between a first layer and a second surface layer because the nuance finished coated paper is actually a result of the nuances of the support and the different layers applied over the support.
- the support and the layer have the same nuance, the contrast of nuance in the said zone or zones can only result from the addition of a shading additive in the fountain solution.
- the support is less luminous than the layer.
- the method according to the present invention applies to all white or colored papers without grammage limitation, laminated or not.
- the coating compositions for printing-writing are well known from one skilled in the art.
- the purpose of the layer is to transform the surface of the paper into a surface homogeneous micro-porous mainly to allow better printability and possibly improve the whiteness of paper or cardboard, its satin, matt or brilliant or its touch. Besides the printability, the fineness and the shape of the pigments of the layer control the opacity of the coated paper and its gloss.
- coated paper means a paper coated with a pigmented layer comprising at least fine natural or synthetic mineral pigments, in particular kaolin and / or calcium carbonate, and at least one binder or adhesive, in particular starch or latex, as well as, optionally, any additives commonly used by a person skilled in the art whose function is to improve the rheological properties of the sauce and to confer particular properties on the layer.
- the layer weight can be 2 to 50 g / m2 on one or each side. ie including a paper usually called “paper surfaced ”for layer weights at 2 to 10 g / m2.
- paper surfaced for layer weights at 2 to 10 g / m2.
- the pigmented layer comprises from 70 to 95% of pigments and 5 to 30% of binders without counting additives.
- coating operation means the operation which consists of depositing on one or both sides of a sheet of paper or cardboard, called “Carrier” means a coating composition or coating sauce comprising pigments thin, a binder or adhesive, water and additives.
- the layer according to the invention can be applied by any means known to man art on at least one of the two faces, in at least one passage, and in particular with known sleeping systems such as a size press, a Metering size press, a metal blade coater, an air knife coater, or a “champion” type rotary bar coater.
- the coated paper drying step consists in removing the water contained in the layer and the one that has entered the support.
- infrared driers drying cylinders can be used in particular conventional or not with a high speed hot air blower hood, or hot air tunnels.
- step (b) said pressure and said pressure are applied. heat by calendering the coated paper.
- the calender rollers can be heated but in any event the friction produced by the radiator grille generates heat.
- the calendering operation is carried out according to the present invention with calenders known to those skilled in the art.
- Calenders are a kind of rolling mill superimposed whose purpose is to flatten the surfaces by compression in order to give them a good writing and printing skills as well as a certain soft touch, and certain "smoothed".
- the ridges and reliefs are crushed by pressure when passing between the rolls, and the sheet is densified.
- the purpose of calendering may also be to make the shiny surfaces. Indeed, in addition to the pressure effect, it promotes sliding sheet / roll which partially fills the hollows and directs the fibers, and the loads located in surface in the plane thereof.
- the grille usually consists of hardened cast iron rollers, alternated with elastic rollers. Between the different rollers, there is a micro-slip whose effect is to satin the paper and make it shiny. The grille is often located outside the machine because of maintenance, change of rollers and sheet breaks. Pressure between the rollers on the paper is of the order of 0.5 to 5000 kN / linear cm. The temperature of the rollers when heated can be 50 to 300 ° C.
- the different parameters of the calendering such as temperature, hardness of presses, pressure are chosen according to the nature of the desired final contrast. These different parameters are adapted according to the calendering speed, itself controlled by the speed of application of the rewetting.
- the calendering operation does not introduce any additional cost in measuring or practice all quality coated papers, even matt ones are calendered.
- the mark can correspond to the said zone or zones and constitute a given pattern appearing in positive contrast with respect to the rest of the sheet of not rewetted paper.
- the given pattern can appear by contrast in negative since the mark would correspond to the remainder of the sheet of paper not treated, i.e. not rewetted initially.
- the said zone or zones may define a visual pattern in transmitted light observation resulting from a reduction opacity in the said zone or zones.
- the said zone or zones can also define a visual pattern by observation in reflected light resulting from an increase in brightness and / or a difference in color of the said zone or zones.
- said mark corresponds to the said area or areas treated.
- step (a) is carried out on coated paper off the coating line, i.e. on paper lying finished.
- the rewetting solution according to the invention can be applied using a rotogravure device comprising a rotogravure cylinder whose imprints or hollow cells, have a shape such that they make it possible to apply said solution of rewetting according to a pattern corresponding to said mark in said zone or zones.
- the rewetting solution is applied using a device of the type of those used in inkjet printing processes, in particular the processes inkjet printing on a reel, it being understood that said ink is replaced by said aqueous rewetting solution.
- Inkjet printing devices in particular digital inkjet printing devices allow brands to be created according to various patterns that can be changed quickly and inexpensively from one manufacturing to another other.
- Said rewetting solution may advantageously comprise a wetting agent so as to improve or accelerate the penetration of the solution into the layer and optionally into the support.
- Said wetting agent may be advantageous, in particular according to the characteristics of the layer, in particular its porosity and the possible presence or not in it of a wetting agent, also according to the characteristics of the support, finally according to the quantity of the re-wetting solution. applied.
- a quantity of 2 to 20 g / m 2 of rewetting solution can be applied.
- said rewetting solution is a solution of a polar solvent hydrophilic.
- wetting agent it is possible in particular to use ethanol or 2-pyrrolidone.
- the rewetting solution is an aqueous solution, the use of a non-aqueous solvent inducing additional costs and risks of pollution.
- rewetting solution a hydroalcoholic solution.
- water without a wetting agent as an aqueous rewetting solution, especially in the case of highly coated paper porous and / or which contains wetting agents in its composition, such as certain silica-based layers used for papers intended specifically for jet printing ink.
- the rewetting solution may also contain additives such as as dyes, in particular shading dyes, fluorescent agents whiteners (optical brighteners) or, conversely, fluorescence inhibitors as well that all additives known to those skilled in the art to allow recognition or authentication of so-called security papers.
- the rewetting solution can contain a colorless anti-forgery agent or authentication agent capable of being revealed by reaction with a specific co-reactant or under specific conditions.
- the present invention also relates to a coated paper comprising at least a mark resembling a watermark characterized in that one or more determined area (s) coated paper have a reduction in thickness compared to the rest of the coated paper, the surface mass in the said zone or zones of the coated paper being identical to that of the rest of the coated paper.
- the weight of the layer is identical in the or said zones and in the rest of the paper, it being understood that the variation in weight may result from the presence of an additive not evaporated from the rewetting solution is not significant.
- the one or more zones have a reduction in opacity compared to the rest of the coated paper.
- the said zone or zones may have a increased gloss compared to the rest of coated paper.
- the said zone or zones have a color especially a shade, different from that of the rest of the coated paper.
- the support and the layer (s) which coat it may have a reduction in thickness and opacity in the said at least one areas relative to the rest of the coated paper.
- only the layer or layers on the surface of the support can have, in the said zone or zones relative to the rest of the coated paper, a reduction in thickness and an increase in gloss, the thickness of the support not being reduced.
- the layer may have on the surface of the or said zones of agents chosen from coloring agents, fluorescent agents, fluorescence inhibiting agents, agents for recognizing or authentication. These agents may have been deposited by application of the solution of rewetting and remaining after evaporation. Anti-forgery or authentication agents are well known to those skilled in the art in the field of security papers.
- Figure 1 shows the pseudo-watermark of Example 1.
- Figure 2 shows the Applicant's logo according to Example 2.
- FIG. 3 represents the pattern constituted by the name of the applicant according to Example 3.
- Figures 4a and 4b show the pseudo-watermark of example 7.
- the dark areas (1) illustrate the areas initially rewetted. On real paper, by observation in transmitted light, they appear in fact brighter in contrast of opacity or brighter and / or dark in contrast of gloss and / or shade.
- Zones (2) are the untreated zones.
- a Hewlett Packard Deskjet 500 C office printer is used fitted with a cartridge reference 51626A previously emptied of its ink, cleaned and then filled with a rewetting solution consisting distilled water and 2% volume of ethanol, in order to rewet the papers below according to various patterns.
- the marks are in positive and the quantity of rewetting solution provided, for a rewetted solid color with a resolution of 300 points per inch, and the screening conditions known as “coarse grain”, of quality known as “mail” and of intensity control called “normal” is of the order of 12 g / m2.
- the papers, immediately rewetted are passed through a laboratory calender with two rollers heated to 50 ° C, under a linear pressure of 1.9 kN / cm.
- the coated paper After calendering, the coated paper has a pattern consisting of the name ⁇ ARJO WIGGINS>> visible in light transmitted by contrast of opacity and which in direct vision is more or less revealed by contrast of shade and fluorescence depending on whether the incident light observation, natural or artificial, contains more or less ultraviolet radiation.
- the rewetting solution consists of distilled water and 2% by weight of 2-pyrrolidone (98% purity).
- the rewetting solution consists of distilled water and 2% by volume of ethanol but this time, the rewetted coated paper is passed between the rollers at 50 ° C of a press grainy and, we obtain a grained coated paper with a pseudo-watermark according to the invention visible by contrast of opacity.
- Hewlett Packard Deskjet 560 C provided with a cartridge reference 51626 A. previously emptied of its ink, cleaned then filled with the rewetting solution consisting of distilled water and 2% by volume of ethanol, and the example below is produced in positive with a resolution of 600 x 300 dots per inch.
- the paper, immediately rewetted, is passed through a laboratory calender (different from that of conditions A and B), the two rollers heated to 50 ° C, under a linear pressure of 3.0 kN / cm.
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Paper (AREA)
- Credit Cards Or The Like (AREA)
- Making Paper Articles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
Pour réaliser des papiers couchés filigranés, ces procédés de filigranage en partie humide ne sont pas adaptés pour plusieurs raisons. Tout d'abord, lorsque le filigrane est réalisé sur le papier support, la différence d'épaisseur et la différence d'opacité de la feuille dans la zone du filigrane réalisé sur le papier support, sont altérées voire supprimées par le dépôt de la couche qui uniformise et opacifie la surface du support. D'autre part, les procédés de filigranage en partie humide impliquent des moyens de réalisation onéreux spécifiques pour chaque type de filigrane tels que les rouleaux filigraneurs. Et, comme les machines de couchage moderne ont des capacités de production très importantes, ils n'offrent donc pas la souplesse nécessaire pour fabriquer les papiers couchés filigranés en petites quantités que le marché attend.
Indépendamment des difficultés éventuellement liées à sa mise en oeuvre, ce procédé nécessite une modification du procédé de couchage classique en utilisant des rouleaux spécifiques et particuliers à chaque filigrane. Ce procédé n'offre donc pas la souplesse permettant de fabriquer de petites quantités de papier « sur mesure » dans des conditions économiquement satisfaisantes avec des machines de couchage industrielles modernes à grande capacité de production.
Les papiers aussitôt remouillés sont passés dans une calandre de laboratoire à deux rouleaux chauffés à 50°C, sous une pression linéaire de 1,9 kN/cm.
Le papier aussitôt remouillé est passé dans une calandre de laboratoire (différente de celle des conditions A et B) les deux rouleaux chauffés à 50°C, sous une pression linéaire de 3.0 kN/cm.
- En figure 4a : par vision directe sous forme de contraste de nuance (zones remouillées devenues moins lumineuses)
- En figure 4b : par observation en lumière transmise sous forme de contraste d'opacité (zones remouillées devenues moins opaques et donc plus claires),
Claims (24)
- Papier couché comportant au moins une marque ressemblant à un filigrane, caractérisé en ce qu'une ou des zones déterminées du papier couché présentent une réduction d'épaisseur par rapport au reste du papier couché, la masse surfacique dans la ou lesdites zones du papier couché étant identique à celle du reste du papier couché.
- Papier selon la revendication 1, caractérisé en ce que le poids de la couche est identique dans la ou lesdites zones et dans le reste du papier couché.
- Papier couché présentant au moins une marque ressemblant à un filigrane selon l'une des revendications 1 à 2, caractérisé en ce que la ou lesdites zones présentent une réduction d'opacité par rapport au reste du papier couché.
- Papier couché selon l'une des revendications 1 à 3, caractérisé en ce que la ou lesdites zones présentent une augmentation de brillance par rapport au reste du papier couché.
- Papier couché selon l'une des revendications 1 à 4, caractérisé en ce que la ou lesdites zones présentent une couleur et notamment une nuance, différente de celle du reste du papier couché.
- Papier couché selon l'une des revendications 1 à 5, caractérisé en ce que la couche et le support présentent une réduction d'épaisseur et d'opacité dans la ou lesdites zones par rapport au reste du papier couché.
- Papier couché selon l'une des revendications 1 à 6, caractérisé en ce que la couche à la surface du support présente une réduction d'épaisseur et une augmentation de brillance dans la ou lesdites zones par rapport au reste du papier couché.
- Papier couché selon l'une des revendications 1 à 7, caractérisé en ce que la couche présente en surface de la ou desdites zones, des agents choisis parmi des agents colorants, des agents fluorescents, des agents inhibiteurs de fluorescence, des agents antifalsification ou d'authentification.
- Papier couché selon l'une des revendications 1 à 8, caractérisé en ce que la couche est une couche pigmentée de 2 à 50 g/m2, sur une face ou chaque face.
- Papier selon la revendication 9, caractérisé en ce que la couche est une couche pigmentée de 10 à 50 g/m2.
- Papier selon la revendication 9, caractérisé en ce que la couche est une couche pigmentée de 2 à 10 g/m2.
- Procédé de fabrication d'un papier couché comportant au moins une marque ressemblant à un filigrane, caractérisé en ce qu'on réalise ladite marque après l'étape de séchage qui suit la dernière opération de couchage, en effectuant les étapes dans lesquelles :a) on applique une solution de remouillage sur au moins une face du papier couché, dans une ou des zones déterminées, etb) on applique une pression et une chaleur dans la ou lesdites zones du papier couché remouillé de manière à évaporer ladite solution et densifier le papier couché dans la ou lesdites zones par rapport au reste du papier couché.
- Procédé selon la revendication 12, caractérisé par le fait que la pression est appliquée sur toute la feuille de papier et par le fait que l'on augmente la température du papier.
- Procédé selon la revendication 12 ou 13, caractérisé en ce qu'à l'étape a) ladite solution de remouillage est appliquée à l'aide d'un dispositif d'impression par jet d'encre sur papier, notamment un dispositif d'impression numérique par jet d'encre, dans lequel on remplace l'encre par ladite solution de remouillage.
- Procédé selon l'une des revendications 12 à 14, caractérisé en que à l'étape b) on applique ladite pression et ladite chaleur en effectuant un calandrage du papier couché.
- Procédé selon l'une des revendications 12 à 15, caractérisé en ce que l'étape a) est réalisée sur la face couchée dudit papier couché.
- Procédé selon l'une des revendications 12 à 16, caractérisé en ce que ladite solution de remouillage est une solution aqueuse.
- Procédé selon l'une des revendications 12 à 17, caractérisé en ce que ladite solution de remouillage comporte des additifs choisis parmi des agents mouillants, des agents colorants notamment des agents de nuançage, des agents fluorescents blanchissants, des agents inhibiteurs de fluorescence, des agents antifalsification ou d'authentification.
- Procédé selon la revendication 17, cacactérisé en ce que ladite solution aqueuse est une solution hydroalcoolique.
- Procédé selon la revendication 19, caractérisé en ce que ladite solution aqueuse contient de 1 à 10% en volume d'éthanol dans de l'eau.
- Procédé selon la revendication 17 ou 18, caractérisé en ce que ladite solution aqueuse contient de 1 à 10 % en poids de 2-pyrrolidone dans de l'eau.
- Procédé selon l'une des revendications 12 à 21, caractérisé en ce que la couleur de la couche de surface est différente de celle du support fibreux et/ou d'une pré-couche ou sous couche.
- Procédé selon l'une des revendications 12 à 22, caractérisé en ce que la ou lesdites zones définissent un motif visuel en observation en lumière transmise résultant d'une réduction d'opacité dans la ou lesdites zones.
- Procédé selon l'une des revendications 12 à 23, caractérisé en ce que la ou lesdites zones définissent un motif visuel en observation en lumière réfléchie résultant d'une augmentation de la brillance et/ou d'une différence de couleur dans la ou lesdites zones.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9711441A FR2768443B1 (fr) | 1997-09-15 | 1997-09-15 | Papier couche comportant une marque ressemblant a un filigrane et procede de fabrication |
| FR9711441 | 1997-09-15 | ||
| PCT/FR1998/001949 WO1999014433A1 (fr) | 1997-09-15 | 1998-09-11 | Papier couche comportant un pseudo-filigrane et procede de fabrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1023501A1 EP1023501A1 (fr) | 2000-08-02 |
| EP1023501B1 true EP1023501B1 (fr) | 2002-11-06 |
Family
ID=9511075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98943968A Expired - Lifetime EP1023501B1 (fr) | 1997-09-15 | 1998-09-11 | Papier couche comportant un pseudo-filigrane et procede de fabrication |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6630055B1 (fr) |
| EP (1) | EP1023501B1 (fr) |
| AT (1) | ATE227377T1 (fr) |
| AU (1) | AU9167398A (fr) |
| BR (1) | BR9812454A (fr) |
| DE (1) | DE69809278T2 (fr) |
| DK (1) | DK1023501T3 (fr) |
| ES (1) | ES2190107T3 (fr) |
| FR (1) | FR2768443B1 (fr) |
| PT (1) | PT1023501E (fr) |
| WO (1) | WO1999014433A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847698B2 (en) | 2001-04-26 | 2010-12-07 | Arjowiggins Security SAS | Cover incorporating a radio frequency identification device |
| US7872579B2 (en) | 2004-04-14 | 2011-01-18 | Arjowiggins Security | Structure including an electronic device, in particular for fabricating a security document or a document of value |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69919436T2 (de) | 1998-04-16 | 2005-09-15 | Pfizer Products Inc., Groton | N-Acyl und N-Aroyl Aralkylamide |
| US6368455B1 (en) * | 2001-05-31 | 2002-04-09 | Appleton Papers Inc. | Method for making security paper |
| DE19935170A1 (de) * | 1999-07-28 | 2001-02-01 | Koenig & Bauer Ag | Verfahren zur Veredelung |
| FR2804447B1 (fr) * | 2000-02-01 | 2002-04-05 | Arjo Wiggins Sa | Papier comportant un filigrane a effet multiton et toile pour fabriquer ce papier |
| FR2804448B1 (fr) * | 2000-02-01 | 2002-04-05 | Arjo Wiggins Sa | Papier de securite comportant une zone de securite, procede pour realiser un tel papier et dispositif pour mettre en oeuvre ce procede |
| FR2816642B1 (fr) * | 2000-11-10 | 2003-07-18 | Banque De France | Procede de fabrication d'un document de securite |
| US20030003323A1 (en) * | 2000-11-22 | 2003-01-02 | Toru Murakami | Particle emitting fluorescence by irradiation of infrared ray and forgery preventing paper using the same |
| GB0030132D0 (en) * | 2000-12-09 | 2001-01-24 | Arjo Wiggins Fine Papers Ltd | Security paper |
| EP1398174A1 (fr) * | 2002-09-10 | 2004-03-17 | Kba-Giori S.A. | Substrat renforcé pour papiers de valeur |
| US7008507B2 (en) * | 2002-12-31 | 2006-03-07 | Kimberly-Clark Worldwide, Inc. | Non-impact printing method for applying compositions to webs and products produced therefrom |
| US7306699B2 (en) * | 2002-12-31 | 2007-12-11 | Kimberly-Clark Worldwide, Inc. | Tissue product containing a topical composition in the form of discrete droplets |
| EP1473152A1 (fr) | 2003-04-30 | 2004-11-03 | Kba-Giori S.A. | Dispositif pour appliqué et coupé des bandes d'aggloméré laminé |
| EP1552956A1 (fr) * | 2004-01-08 | 2005-07-13 | Kba-Giori S.A. | Mèthode pour l'application d'un film |
| EP1765601B1 (fr) * | 2004-06-11 | 2008-11-05 | Ahlstrom Kauttua OY | Materiau de securite multicouche et son procede de production |
| DE102004044831A1 (de) * | 2004-09-16 | 2006-04-06 | Leonhard Kurz Gmbh & Co. Kg | Wertdokument sowie Verfahren zur Herstellung eines Wertdokumentes |
| PL2038478T3 (pl) * | 2006-06-27 | 2012-09-28 | Basf Se | Sposób wykańczania papieru i wyrobów papierowych |
| FR2941713B1 (fr) | 2009-02-03 | 2011-04-01 | Arjowiggins Security | Procede de securisation d'un objet opaque colore. |
| FR2943074B1 (fr) * | 2009-03-13 | 2011-05-20 | Arjowiggins Security | Substrat marquable au laser et procede de fabrication associe |
| BR112012031309B1 (pt) | 2010-06-10 | 2020-04-07 | Arjo Systems | estrutura segura, em particular, um documento seguro, tal como um passaporte |
| FR2979852B1 (fr) | 2011-09-14 | 2013-09-27 | Arjowiggins Security | Structure multicouche integrant au moins un element de securite. |
| FR2982524B1 (fr) | 2011-11-14 | 2013-12-27 | Arjowiggins Security | Structure multicouche |
| FR2984799A1 (fr) | 2011-12-22 | 2013-06-28 | Arjowiggins Security | Structure multicouche comportant au moins une couche diffusante. |
| FR3012075B1 (fr) | 2013-10-18 | 2016-04-15 | Banque De France | Procede de fabrication d'un document de securite, tel qu'un billet de banque |
| FR3022489B1 (fr) | 2014-06-23 | 2021-10-29 | Arjowiggins Security | Papiers de securite et procedes de fabrication. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB456746A (en) * | 1935-05-13 | 1936-11-13 | James Donald Maclaurin | Method and means for smoothing mobile films upon webs |
| EP0027698B2 (fr) * | 1979-10-22 | 1989-04-05 | The Wiggins Teape Group Limited | Procédé de fabrication de papier ou de papier conché |
| US4824486A (en) | 1985-11-04 | 1989-04-25 | Westvaco Corporation | Simulated watermark printing system |
| SE505397C2 (sv) | 1995-11-09 | 1997-08-18 | Mo Och Domsjoe Ab | Ytbehandlat säkerhethetspapper och förfarande samt anordning för framställning av ytbehandlat säkerhetspapper |
| DE29714004U1 (de) | 1997-08-06 | 1997-11-06 | Beckenlehner, Karin, 93053 Regensburg | Mittel zum Tintenstrahldruck künstlicher Wasserzeichen |
-
1997
- 1997-09-15 FR FR9711441A patent/FR2768443B1/fr not_active Expired - Fee Related
-
1998
- 1998-09-11 WO PCT/FR1998/001949 patent/WO1999014433A1/fr not_active Ceased
- 1998-09-11 AU AU91673/98A patent/AU9167398A/en not_active Abandoned
- 1998-09-11 DE DE69809278T patent/DE69809278T2/de not_active Expired - Fee Related
- 1998-09-11 DK DK98943968T patent/DK1023501T3/da active
- 1998-09-11 US US09/508,625 patent/US6630055B1/en not_active Expired - Fee Related
- 1998-09-11 BR BR9812454-4A patent/BR9812454A/pt not_active IP Right Cessation
- 1998-09-11 PT PT98943968T patent/PT1023501E/pt unknown
- 1998-09-11 AT AT98943968T patent/ATE227377T1/de not_active IP Right Cessation
- 1998-09-11 ES ES98943968T patent/ES2190107T3/es not_active Expired - Lifetime
- 1998-09-11 EP EP98943968A patent/EP1023501B1/fr not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7847698B2 (en) | 2001-04-26 | 2010-12-07 | Arjowiggins Security SAS | Cover incorporating a radio frequency identification device |
| US7940185B2 (en) | 2001-04-26 | 2011-05-10 | Arjowiggins Security SAS | Cover incorporating a radiofrequency identification device |
| US7872579B2 (en) | 2004-04-14 | 2011-01-18 | Arjowiggins Security | Structure including an electronic device, in particular for fabricating a security document or a document of value |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9812454A (pt) | 2000-10-03 |
| FR2768443B1 (fr) | 1999-10-15 |
| ATE227377T1 (de) | 2002-11-15 |
| US6630055B1 (en) | 2003-10-07 |
| EP1023501A1 (fr) | 2000-08-02 |
| WO1999014433A1 (fr) | 1999-03-25 |
| DE69809278D1 (de) | 2002-12-12 |
| FR2768443A1 (fr) | 1999-03-19 |
| DK1023501T3 (da) | 2003-03-03 |
| AU9167398A (en) | 1999-04-05 |
| DE69809278T2 (de) | 2003-08-28 |
| ES2190107T3 (es) | 2003-07-16 |
| PT1023501E (pt) | 2003-03-31 |
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