EP1975311B1 - Anti-falsification watermark paper and method of making same - Google Patents

Anti-falsification watermark paper and method of making same Download PDF

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Publication number
EP1975311B1
EP1975311B1 EP06828187.2A EP06828187A EP1975311B1 EP 1975311 B1 EP1975311 B1 EP 1975311B1 EP 06828187 A EP06828187 A EP 06828187A EP 1975311 B1 EP1975311 B1 EP 1975311B1
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EP
European Patent Office
Prior art keywords
paper
patterns
rolls
falsification
watermark
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.)
Active
Application number
EP06828187.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1975311A1 (en
EP1975311A4 (en
Inventor
Shuanyin An
Duyi Wang
Wenquan Liu
Daxing Wen
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.)
China Banknote Printing and Minting Corp
Original Assignee
China Banknote Printing and Minting Corp
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
Application filed by China Banknote Printing and Minting Corp filed Critical China Banknote Printing and Minting Corp
Publication of EP1975311A1 publication Critical patent/EP1975311A1/en
Publication of EP1975311A4 publication Critical patent/EP1975311A4/en
Application granted granted Critical
Publication of EP1975311B1 publication Critical patent/EP1975311B1/en
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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
    • D21F11/006—Making patterned paper

Definitions

  • the present invention relates to paper for manufacturing currency or the like. More particularly, relates to an anti-falsification watermark paper and its manufacturing method.
  • watermarks are usually used on important papers, for example, paper money, security paper, certificate paper, note paper, each of which consists of watermark used to prevent it from forgery.
  • Watermark is normally formed by the difference of paper brightness and darkness, when a viewer observes paper patterns against light, different light penetrating rate results the pattern of the watermark.
  • Conventional methods for making watermark can be concluded as follows:
  • EP 0 687 771 discloses making security paper by wet embossing paper with a moisture content in the range 50 to 65%, preferably 60 to 65%.
  • US 2005/0039846 discloses making an air laid absorbent sheet.
  • a dry web of fibres is deposited on a foraminous web, which is then compacted and then embossed with a hard rubber roller having a durometer hardness from about 50 to about 100.
  • the object of the invention is to provide a new manufacturing method of making an anti-falsification watermark paper while addressing the above existent defects.
  • the present invention uses the solution as follows: a method for manufacturing an anti-falsification watermark paper, the moist paper is dried till the water content is 10%-25%, then partial or full surface of the paper is pressed by rolls or plane plates with convex patterns, concave patterns or combination of convex and concave patterns roll to form watermarks.
  • the pressure is 50N-1.5KN/cm when pressing the paper. Patterns are formed directly or indirectly on the surfaces of pressing rolls or on the plane plates.
  • a method for manufacturing an anti-falsification watermark paper comprising the steps of stock beating, pulp refining, forming, pressing and drying, wherein further comprises pressing partial or full surface of the paper by rolls with convex patterns, concave patterns or combination of convex and concave patterns roll to form watermarks.
  • water content is controlled between 10%-25%.
  • the pressure is 50N-1.5KN/cm when pressing the paper. Patterns are formed directly or indirectly on the surfaces of pressing rolls or on the plane plates.
  • An anti-falsification watermark paper when observing the anti-falsification paper against light, bright and shade variation of watermark patterns can be seen. Light or shade strips with the width less than 0.3mm are contained in the patterns of the paper. Transition of the light and shade parts is continuous and smooth.
  • An apparatus for manufacturing an anti-falsification paper comprising a drive system and a pressure applying system.
  • the drive system is connected with a pair of rolls with convex patterns, concave patterns or a combination of convex and concave patterns on partial or full surface.
  • the surface material of one of the rolls is plastic or rubber whose shore A hardness is more than 99.
  • the apparatus anti-falsification may also be configured as follows: the drive system is connected with a roll and the pressure applying system is connected with a plane plate. Convex patterns, concave patterns or a combination of convex and concave patterns is made on partial or full surface of the plane plate and the roll.
  • the surface materials of at least one of the plane plate or the roll is plastic or rubber whose shore A hardness is more than 99.
  • the apparatus anti-falsification may also be configured as follows: the pressure applying system is connected with two corresponding plane plates with convex patterns, concave patterns or a combination of convex and concave patterns on partial or full surfaces.
  • the surface material of at least one of the plane plates is made of plastic or rubber whose shore A hardness is more than 99.
  • the manufacturing method of making an anti-falsification watermark paper comprises the step of: preparing pulp (1); shaping on mould wires (2); pressing (3); predrying (4); making watermarks (5); drying (6); and subsequent procedures (7).
  • the step of making watermarks (5) further comprises the following steps:
  • the watermark patterns contain light or shade strips with the width less than 0.3mm.
  • the minimum width of the strips can be 0.06mm.
  • the transition of the light and shade parts is continuous and smooth.
  • the predried moist paper is pressed by a group of pressing devices composed of rolls or plane plates.
  • the components of the pressing devices can be two rolls, one roll and one plane plate or two plane plates.
  • Fig. 2, Fig. 3 and Fig. 4 illustrate different embodiments of the pressing devices.
  • the apparatus for manufacturing an anti-falsification watermark paper may be composed of a drive system 100.
  • the drive system 100 is connected with a pair of rolls 81 and 82 with convex patterns, concave patterns or a combination of convex and concave patterns on partial or full surface of the rolls, as shown in Fig. 2 .
  • Fig. 2a shows the condition that the patterns are made on roll 81
  • Fig. 2b shows the condition that the patterns are made on roll 82
  • Fig. 2c shows the condition that a combination of convex and concave patterns are made on the rolls 81 and 82.
  • the surface material of one of the two rolls is made of plastic or rubber whose shore A hardness is more than 99 (indicated by letter "A" in the figure).
  • the apparatus for manufacturing an anti-falsification watermark paper may be composed of a drive system 100 and a pressure applying system 200.
  • the drive system 100 is connected with a roll 8 and the pressure applying system 200 is connected with a plane plate 9, as shown in Fig. 3 .
  • Partial or full surface of the plane plate and the roll has convex patterns, concave patterns or a combination of convex and concave patterns roll.
  • Fig. 3a shows the condition that patterns are made on the roll 8
  • Fig. 3b shows the condition that patterns are made on the plane plate 9
  • Fig. 3c shows the condition that a combination of concave and convex patterns are made on the roll 8 and the plate 9.
  • the surface material of at least one of the two components is made of plastic or rubber whose shore A hardness is more than 99 (as indicated by letter "A" in the figure).
  • the apparatus for manufacturing an anti-falsification watermark paper may be composed of a pressure applying system 200, which is connected with two pieces of inter-corresponding plane plates 91 and 92, on surfaces of which there are convex patterns, concave patterns or a combination of convex and concave patterns, as shown in Fig. 4.
  • Fig. 4a shows a condition that the patterns are made on the plane plate 91 (patterns are at the bottom of the plate, so they can't be seen).
  • Fig. 4b shows a condition that patterns are made on the plate 92 and
  • Fig. 4c shows the condition that convex and concave patterns are made on both plates 91 and 92.
  • At least one of the above two plates is made of plastic or rubber whose shore A hardness is more than 99 (as indicated by letter "A" in the figure).
  • Raw materials for manufacturing the paper of the present invention should contain more than 90% of plant fibers. Watermarks can be pressed on paper note, security paper, credential paper and receipt paper according to the method of the present invention. Subsequent process will be different according to different usage of paper.
  • a group of pressing rolls with concave and convex patterns are erected between drying cylinders of a drying section on a paper machine.
  • Moist paper of 50% water content will be continuously dried after being pressed by the pressing rolls.
  • the surfaces of the pressing rolls are packed by rubber whose shore A hardness is 99.
  • Convex patterns are engraved on the surface of one of the rolls.
  • each one centimeter length of paper bears a force of 50N.
  • the paper After being pressed, the paper will be processed by post dryness, subsequent treatment and reel.
  • half transparent patterns can be seen on the other side of the pressed paper.
  • Concave and convex patterns are engraved by mechanical method on the surface of one of the pressing rolls. Pressing the paper under a pressure as each centimeter length of paper bears a force of 1.5 KN, then processing it by post dryness, subsequent treatment and reel. After being pressed, the paper can be seen with formed watermark patterns against light.
  • the present invention performs the step of pressing the moist paper by rolls or plane plates with convex patterns, concave patterns or a combination of concave and convex patterns on surfaces during the course of drying, instead of using traditional vat formation process. It will not cause uneven distribution of fibers that may results fiber amounts to decrease on partial area of the paper, which may reduce the strength on partial area or bring poor clearness of watermark of the paper.
  • the bright and shade lines of watermarks in the paper are less than 0.3mm wide, and the transition between bright and shade layers of watermark area are smooth, so as to improve the watermark clearness.
EP06828187.2A 2005-12-09 2006-11-28 Anti-falsification watermark paper and method of making same Active EP1975311B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2005101113205A CN1978786B (zh) 2005-12-09 2005-12-09 一种防伪水印纸及其制造方法
PCT/CN2006/003191 WO2007065346A1 (fr) 2005-12-09 2006-11-28 Papier en filigrane antifalsification et son procede de fabrication

Publications (3)

Publication Number Publication Date
EP1975311A1 EP1975311A1 (en) 2008-10-01
EP1975311A4 EP1975311A4 (en) 2012-03-21
EP1975311B1 true EP1975311B1 (en) 2017-05-31

Family

ID=38122477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828187.2A Active EP1975311B1 (en) 2005-12-09 2006-11-28 Anti-falsification watermark paper and method of making same

Country Status (3)

Country Link
EP (1) EP1975311B1 (zh)
CN (1) CN1978786B (zh)
WO (1) WO2007065346A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101748653B (zh) * 2009-12-17 2011-04-20 康文禧 水印纸的制造方法
CN106049162B (zh) * 2016-05-31 2017-12-08 陕西科技大学 一种环保型水印纸的制备方法
FR3080324B1 (fr) * 2018-04-23 2022-04-01 Oberthur Fiduciaire Sas Feuille securisee
CN113561573A (zh) * 2021-07-22 2021-10-29 阳谷新新特种纸有限公司 一种复合型水印纸的制备工艺

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362598A (en) * 1916-07-28 1920-12-21 Brown Howard Apparatus for watermarking paper
DE498249C (de) * 1925-05-12 1930-05-21 Raymond De Montgolfier Verfahren zur Herstellung von Reliefwalzen zur Anbringung von Wasserzeichen in Papier auf der Papiermaschine
US5766416A (en) * 1989-12-14 1998-06-16 Tokushu Paper Manufacturing Co., Ltd. Method of producing watermark paper
EP0643755B1 (en) * 1992-06-04 1997-02-12 Conoco Inc. Process for producing solvated mesophase pitch and carbon artifacts therefrom
CN2137676Y (zh) * 1992-09-20 1993-07-07 镇江市大东造纸厂 一种光泽压榨辊
JPH06264392A (ja) * 1993-03-12 1994-09-20 Tokushu Seishi Kk 透き入れ紙
GB9411868D0 (en) * 1994-06-14 1994-08-03 Wiggins Teape Group The Limite Paper carrying a surface relief pattern
JP3099259B2 (ja) * 1995-03-03 2000-10-16 三島製紙株式会社 分割型マーキングダンディロール
JP3004970B2 (ja) * 1997-09-09 2000-01-31 特種製紙株式会社 紙層製造方法、ロール組立方法、及び紙層製造装置
SE511143C2 (sv) * 1997-12-30 1999-08-09 Sca Hygiene Paper Ab Metod att framställa ett papper uppvisande en tredimensionellt mönster
EP0957201A1 (en) * 1998-05-13 1999-11-17 The Procter & Gamble Company Process for the manufacture of paper web, and use of the paper web
CN1075578C (zh) * 1998-07-14 2001-11-28 顺德市海诚印务有限公司 防伪标签纸、包装纸的制作方法
SE512947C2 (sv) * 1998-10-01 2000-06-12 Sca Research Ab Metod att framställa ett papper med ett tredimensionellt mönster
SE512944C2 (sv) * 1998-10-01 2000-06-12 Sca Research Ab Metod att framställa papper med ett tredimensionellt mönster
US6893525B1 (en) * 1999-05-05 2005-05-17 Fort James Corporation Method for embossing air-laid webs using laser engraved heated embossing rolls
JP4185800B2 (ja) * 2003-04-01 2008-11-26 株式会社カイモン 鋼製ジャケット工法における止水材の形成方法および止水材の取り付け構造
CN1834341A (zh) * 2005-03-18 2006-09-20 天津金证造纸有限公司 一种标印模及采用标印模制造防伪纸的生产工艺

Also Published As

Publication number Publication date
CN1978786B (zh) 2012-05-30
EP1975311A1 (en) 2008-10-01
WO2007065346A1 (fr) 2007-06-14
EP1975311A4 (en) 2012-03-21
CN1978786A (zh) 2007-06-13

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