(51) Int Cl.: D21F 11/00 ( ) D21H 27/30 ( ) D21H 27/32 ( ) D21H 27/10 ( ) D21H 21/48 ( )

Transcription

1 (19) TEPZZ Z_ 4_B_T (11) EP B1 (12) EUROPEAN PATENT SPECIFICATION (4) Date of publication and mention of the grant of the patent: Bulletin 2014/47 (21) Application number: (22) Date of filing: (1) Int Cl.: D21F 11/00 ( ) D21H 27/30 ( ) D21H 27/32 ( ) D21H 27/10 ( ) D21H 21/48 ( ) (86) International application number: PCT/IB2007/ (87) International publication number: WO 2007/ ( Gazette 2007/42) (4) SECURITY PAPER MATERIAL, IN PARTICULAR FOR LABELLING AND PACKAGING, AND MANUFACTURING METHOD THEREOF SICHERHEITSPAPIER INSBESONDERE FÜR LABELS UND VERPACKUNG UND DIE DAZUGEHÖRIGE HERSTELLUNGSMETHODE MATERIAU DE PAPIER DE SECURITE, EN PARTICULIER POUR L ETIQUETAGE ET L EMBALLAGE, ET PROCEDE DE FABRICATION DE CELUI-CI (84) Designated Contracting States: DE ES FR GB IT (30) Priority: IT MI (43) Date of publication of application: Bulletin 2009/03 (73) Proprietor: GRUPPO CORDENONS S.p.A Milano (IT) (72) Inventors: GILBERTI, Ferruccio I Milano (IT) MONACELLI, Luca I Pordenone (IT) PIROLA, Francesco I-2011 Milano (IT) (74) Representative: Rapisardi, Mariacristina Ufficio Brevetti Rapisardi S.r.l. Via Serbelloni, Milano (IT) (6) References cited: EP-A EP-A WO-A-03/01016 DE-A GB-A GB-A EP B1 Note: Within nine months of the publication of the mention of the grant of the European patent in the European Patent Bulletin, any person may give notice to the European Patent Office of opposition to that patent, in accordance with the Implementing Regulations. Notice of opposition shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). Printed by Jouve, 7001 PARIS (FR)

2 1 EP B1 2 Description BRIEF DESCRIPTION OF THE DRAWINGS TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a security paper material, in particular for labelling and packaging. BACKGROUND ART [0002] There are known various so-called security papers, i.e. provided with various artifices having the function of either avoiding or detecting a possible fraudulent copy or forgery; specifically, security papers provided with electronic chips capable of outputting an identification signal are known. [0003] In the known security papers, the chips are applied onto a support, which is then glued or otherwise fixed onto the previously formed paper sheet. [0004] This type of security paper is not free from drawbacks, both because the application of the chips is relatively complicated and costly, and because the chips cannot be appropriately anchored to the paper sheet underneath, and furthermore remain exposed on the surface of the paper sheet and are thus subject to possible damage, unless the chips are coated with a protective layer which however implies an increase of complexity and cost of the manufacturing process. [000] EP-A-19832, GB-A and WO 03/01016 disclose methods for making security papers wherein the chips are carried by supporting threads and then released or otherwise applied onto the paper material during cylinder mould process for paper manufacturing. DISCLOSURE OF INVENTION [0006] It is an object of the present invention to provide a security paper material, of the type formed by a paper sheet with an electronic identification chip, which is free from the above-mentioned drawbacks of the known art; in particular, it is an object of the present invention to provide a security paper material which is relatively simple and cost-effective to manufacture and in which the chip is firmly and efficiently anchored to the paper sheet. [0007] The invention relates to a manufacturing method of a security paper material, in particular for labelling and packaging, [0008] According to a preferred embodiment, the method further comprises, after the step of introducing the chips into the paper sheet being formed, a step of coupling an auxiliary paper sheet to said paper sheet; the chips are applied onto an upper side of the paper sheet being formed, and the auxiliary paper sheet is coupled to said side [0009] The invention is further described in the following non-limitative example of embodiment, with reference to the accompanying drawings, in which: - figure 1 is a diagrammatic longitudinal section view of a security paper material according to the invention; - figure 2 is a diagrammatic view of a manufacturing system of the security paper material in figure 1 and illustrates the main steps of the manufacturing method of such material. BEST MODE FOR CARRYING OUT THE INVENTION [0010] With reference to figure 1, a security paper material, specifically for labelling and packaging, comprises a paper sheet 2 formed by a cellulose fibre matrix 3 and provided with at least one electronic chip 4 of known type, e.g. an active and/or passive RFID chip. [0011] Chip 4 is at least partially embedded in paper sheet 2 (as shown by a solid line in the left part of figure 1) and, preferably, is entirely embedded in matrix 3 (as shown by a dotted line in the right part of figure 1). [0012] Optionally, paper material 1 comprises an auxiliary paper sheet coupled to paper sheet 2 and chip 4 is incorporated between auxiliary sheet and paper sheet 2. [0013] Paper material 1 is advantageously made, in accordance with a further aspect of the present invention, by the method described hereafter with reference to figure 2, which diagrammatically shows a manufacturing system 10 of paper material 1. [0014] System 10 comprises a Fourdrinier type continuous papermaking machine 11, essentially known and not described in detail for the sake of simplicity. In general terms, papermaking machine 11 comprises a headbox 12 for feeding a wet cellulose fibre pulp to a flat forming table 13 having a formation fabric 14 on which the pulp is deposited; papermaking machine 11 further comprises a table roll 1 cooperating with forming fabric 14, a socalled "wet end" 16 and a dryer section 17. As known, the progressive subtraction of water from the wet pulp gradually transforms the pulp into a paper sheet. The paper sheet being formed is indicated by numeral 20 in figure 2 and will form, once dry, paper sheet 2 of abovedescribed paper material 1. [001] After an initial part of forming table 13 near headbox 12, and downstream of table roll 1, there is arranged over forming table 13, a dispensing device 21 which deposits chips 4 on the pulp, at predetermined intervals both in the direction of advancement of the paper sheet 20 being formed and in transversal direction. Specifically, chips 4 are dropped by gravity onto the pulp carried by forming fabric 14 onto an upper side 22 of paper sheet being formed 20 and are at least partially embedded in the pulp. 2

3 3 EP B1 4 [0016] Chips 4 are thus introduced into the paper sheet being formed 20 during the step of transforming the wet cellulose fibre pulp into paper. [0017] Immediately downstream of dispensing device 21, a mechanism 2 carries auxiliary paper sheet into contact with side 22 of paper sheet 20 being formed and makes the coupling of the latter with auxiliary paper sheet. [0018] A wet rolling step follows, performed by means of a rolling assembly 28 arranged in wet part 16 and having for example two or more counterpoised pairs of rolls; the wet rolling of paper sheet 20 being formed with auxiliary paper sheet, the latter also still wet, ensures the adhesion of the two sheets. [0019] The formation of paper sheet 2 and thus of paper material 1 is completed by passing through wet end 16 and drier section 17. [0020] According to a variant, table roll 1 is absent from the papermaking machine 11 and dispensing device 21 is arranged on forming table 13 upstream of mechanism 2; indeed, the coupling with auxiliary paper sheet makes the use of table roll 1 on forming table 13 unnecessary, as it is not required to improve the surface properties of the paper sheet 20 being formed (onto which auxiliary paper sheet is placed). [0021] According to a further variant, dispensing device 21 is arranged after the initial part of forming table 13 next to headbox 12 and upstream of table roll 1 instead of downstream of table roll 1, as shown by a dotted line in figure 2. Obviously, if table roll 1 is missing, dispensing device 21 is arranged on forming table 13 between headbox 12 and mechanism 2. [0022] The advantages of the present invention are apparent from the description above. [0023] The paper material of the invention allows a rapid, secure identification by querying the chip incorporated in the material itself. [0024] The chips are perfectly incorporated and firmly fixed within the material, thus protected from possible damage. [002] Furthermore, the paper material of the invention is perfectly printable with the usual printing techniques offering high printing quality. [0026] Moreover, the manufacturing method is simple and cost-effective, specifically as the introduction of the chips is performed directly during the manufacturing step of the paper material. Claims 1. A manufacturing method of a security paper material, in particular for labelling and packaging, comprising the steps of forming a paper sheet from a wet cellulose fibre pulp and providing the paper sheet with electronic chips; the chips being introduced into the paper sheet being formed during the transformation step of the pulp into paper, the chips being deposited directly onto the wet pulp and at least partially embedded in the pulp; the method being characterised by comprising the steps of: feeding the wet cellulose fibre pulp to a Fourdrinier type continuous papermaking machine, depositing the pulp on a forming table; and forming a sheet of paper by gradually subtracting water from the pulp; the chips being deposited in the pulp directly onto the forming table on an upper side of the paper sheet being formed and being fed by a dispensing device arranged over the forming table and being dropped by gravity onto the pulp; wherein the chips are deposited on the pulp by the dispensing device at predetermined intervals both in the direction of advancement of the paper sheet being formed and in transversal direction. 2. A method according to claim 1, characterised by comprising, after the step of introducing the chips into the paper sheet being formed, a step of coupling an auxiliary paper sheet to said paper sheet. 3. A method according to claim 2, characterised in that the chips are applied onto an upper side of the paper sheet being formed and the auxiliary paper sheet is coupled to said side. Patentansprüche 1. Herstellungsmethode für ein Sicherheitspapiermaterial, insbesondere für Etikettierung und Verpackung, umfassend die Schritte zum Formen eines Blatts Papier aus einem nassen Zellulosefaser-Papierbrei und zum Versehen des Blatts Papier mit elektronischen Chips, wobei die Chips in das Blatt Papier eingeführt werden, das während des Schritts zum Umwandeln des Papierbreis in Papier geformt wird, und die Chips direkt im nassen Papierbrei abgelegt und zumindest teilweise in den Papierbrei eingebettet werden; wobei diese Methode dadurch gekennzeichnet ist, dass sie folgende Schritte umfasst: Zuführen des nassen Zellulosefaser-Papierbreis zu einer kontinuierlichen Papierherstellungsmaschine vom Typ Fourdrinier, wobei der Papierbrei auf einem Formtisch abgelegt wird; Formen eines Blatts Papier, indem dem Papierbrei stufenweise Wasser entzogen wird, wobei die Chips direkt auf dem Formtisch in den Papierbrei eingefügt werden, und zwar an einer oberen Seite des zu formenden Blatts Papier, indem sie mittels einer Abgabevorrichtung, die über dem Formtisch angeordnet ist, zugeführt werden und durch Schwerkraft in den Papierbrei fallen; wobei die Chips von der Abgabevorrichtung auf dem Papierbrei in vorgegebenen Intervallen sowohl in Vorschubrichtung des zu formenden Blatts Papier als auch in Querrichtung abgelegt werden. 2. Methode nach Anspruch 1, dadurch gekennzeich- 3

4 EP B1 6 net, dass sie nach dem Schritt des Einführens der Chips in das zu formende Blatt Papier einen Schritt zum Kaschieren eines Hilfspapierblatts mit dem Blatt Papier umfasst. 3. Methode nach Anspruch 2, dadurch gekennzeichnet, dass die Chips auf einer oberen Seite des zu formenden Blatts Papier angebracht werden und dass das Hilfspapierblatt mit dieser Seite kaschiert wird. 10 Revendications 1. Procédé de fabrication d un matériau de papier de sécurité, en particulier pour l étiquetage et l emballage, comprenant les étapes consistant à former une feuille de papier à partir d une pâte de fibre cellulosique humide et à pourvoir la feuille de papier de puces électroniques ; les puces étant introduites dans la feuille de papier étant formée lors de l étape de transformation de la pâte en papier, les puces étant déposées directement sur la pâte humide et au moins partiellement incorporées dans la pâte ; le procédé étant caractérisé en ce qu il comprend les étapes de : alimenter la pâte de fibre cellulosique humide à une machine à papier en continu du type Fourdrinier, déposant la pâte sur une table de formation ; et former une feuille de papier en retirant graduellement de l eau de la pâte ; les puces étant directement déposées dans la pâte sur la table de formation, sur un côté supérieur de la feuille de papier étant formée, et celles-ci étant alimentées par un dispositif de distribution disposé au-dessus de la table de formation et tombant par gravité sur la pâte ; dans lequel les puces sont déposées sur la pâte par le dispositif de distribution à des intervalles prédéterminés à la fois dans le sens de progression de la feuille de papier étant formée et dans une direction transversale Procédé selon la revendication 1, caractérisé en ce qu il comprend, après l étape consistant à introduire les puces dans la feuille de papier étant formée, une étape consistant à accoupler une feuille de papier auxiliaire à ladite feuille de papier Procédé selon la revendication 2, caractérisé en ce que les puces sont appliquées sur un côté supérieur de la feuille de papier étant formée et en ce que la feuille de papier auxiliaire est accouplée au dit côté. 0 4

5 EP B1

6 EP B1 REFERENCES CITED IN THE DESCRIPTION This list of references cited by the applicant is for the reader s convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard. Patent documents cited in the description EP A [000] GB A [000] WO A [000] 6