EP0367520A3 - Improvements in apparatus for forming watermarks in paper - Google Patents

Improvements in apparatus for forming watermarks in paper Download PDF

Info

Publication number
EP0367520A3
EP0367520A3 EP19890311148 EP89311148A EP0367520A3 EP 0367520 A3 EP0367520 A3 EP 0367520A3 EP 19890311148 EP19890311148 EP 19890311148 EP 89311148 A EP89311148 A EP 89311148A EP 0367520 A3 EP0367520 A3 EP 0367520A3
Authority
EP
European Patent Office
Prior art keywords
paper
web
engagement
forming watermarks
watermarks
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Withdrawn
Application number
EP19890311148
Other languages
German (de)
French (fr)
Other versions
EP0367520A2 (en
Inventor
Bronislaw Radvan
David Robert Allen
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.)
Wiggins Teape Group Ltd
Original Assignee
Wiggins Teape Group Ltd
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 Wiggins Teape Group Ltd filed Critical Wiggins Teape Group Ltd
Publication of EP0367520A2 publication Critical patent/EP0367520A2/en
Publication of EP0367520A3 publication Critical patent/EP0367520A3/en
Withdrawn legal-status Critical Current

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

Landscapes

  • Paper (AREA)

Abstract

A paper machine having an endless foraminous element for engagement with a fibrous web during formation of the web into paper, said element having bonded thereto with flexible bonds, spaced flexible components each representing a surface configuration adapted to generate a watermark in said paper as a result of the engagement of said foraminous element with said web.
EP19890311148 1988-11-03 1989-10-27 Improvements in apparatus for forming watermarks in paper Withdrawn EP0367520A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8825791 1988-11-03
GB888825791A GB8825791D0 (en) 1988-11-03 1988-11-03 Improvements in apparatus for forming watermarks in paper

Publications (2)

Publication Number Publication Date
EP0367520A2 EP0367520A2 (en) 1990-05-09
EP0367520A3 true EP0367520A3 (en) 1991-08-14

Family

ID=10646282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890311148 Withdrawn EP0367520A3 (en) 1988-11-03 1989-10-27 Improvements in apparatus for forming watermarks in paper

Country Status (5)

Country Link
EP (1) EP0367520A3 (en)
JP (1) JPH02169791A (en)
CA (1) CA2002118A1 (en)
FI (1) FI895204A0 (en)
GB (1) GB8825791D0 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260772B (en) * 1991-10-25 1995-05-10 Portals Ltd Method for making sheet materials and security paper
NL1006151C2 (en) * 1997-05-29 1998-12-01 Rudico Holding B V Forming wire for making paper with watermark
US6464829B1 (en) 2000-08-17 2002-10-15 Kimberly-Clark Worldwide, Inc. Tissue with surfaces having elevated regions
US6478927B1 (en) 2000-08-17 2002-11-12 Kimberly-Clark Worldwide, Inc. Method of forming a tissue with surfaces having elevated regions
DE10145782A1 (en) * 2001-09-17 2003-04-10 Giesecke & Devrient Gmbh Paper screen for the production of two-stage watermarks and process for its production
DE102005032815A1 (en) 2005-07-12 2007-01-18 Giesecke & Devrient Gmbh Method for producing a security paper, paper screen and forming element for paper screen
GB2437939B (en) * 2006-05-08 2008-03-26 Rue De Int Ltd Improvements in security substrates
RU2578983C1 (en) 2012-03-19 2016-03-27 Де Ля Рю Интернэшнл Лимитед Improvements in methods of making security features
GB2532084B (en) 2014-11-10 2017-09-06 De La Rue Int Ltd Improvments in watermarking
GB2532081B (en) * 2014-11-10 2017-09-13 De La Rue Int Ltd Improvements in watermarking
JP6876215B2 (en) * 2017-03-06 2021-05-26 デュプロ精工株式会社 Sheet forming device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575518A (en) * 1925-11-20 1926-03-02 Eastern Mfg Company Process of watermarking paper and adjunct therefor
US1616222A (en) * 1922-05-18 1927-02-01 American Writing Paper Company Fourdrinier-wire screen
DE620953C (en) * 1934-05-18 1935-10-30 Wilma Dorothea Schumacher Process for the production of watermarked security paper
CH244613A (en) * 1945-05-25 1946-09-30 Reinhardt Erwin Device on paper machines for the production of watermarks that appear darker when viewed through the paper compared to the same.
DE2007455A1 (en) * 1969-02-19 1970-09-10 Trefimetaux GP, Paris Paper making roller
GB1220070A (en) * 1967-03-16 1971-01-20 Hokkai Seishi Kabushiki Kaisha A device for continuous manufacture of patterned paper
GB1447933A (en) * 1974-05-28 1976-09-02 Portals Ltd Manufacture of watermarked paper
GB2149827A (en) * 1983-11-17 1985-06-19 Mead Corp Dandy roll for manufacturing paper having simulated oxford cloth watermark

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616222A (en) * 1922-05-18 1927-02-01 American Writing Paper Company Fourdrinier-wire screen
US1575518A (en) * 1925-11-20 1926-03-02 Eastern Mfg Company Process of watermarking paper and adjunct therefor
DE620953C (en) * 1934-05-18 1935-10-30 Wilma Dorothea Schumacher Process for the production of watermarked security paper
CH244613A (en) * 1945-05-25 1946-09-30 Reinhardt Erwin Device on paper machines for the production of watermarks that appear darker when viewed through the paper compared to the same.
GB1220070A (en) * 1967-03-16 1971-01-20 Hokkai Seishi Kabushiki Kaisha A device for continuous manufacture of patterned paper
DE2007455A1 (en) * 1969-02-19 1970-09-10 Trefimetaux GP, Paris Paper making roller
GB1447933A (en) * 1974-05-28 1976-09-02 Portals Ltd Manufacture of watermarked paper
GB2149827A (en) * 1983-11-17 1985-06-19 Mead Corp Dandy roll for manufacturing paper having simulated oxford cloth watermark

Also Published As

Publication number Publication date
FI895204A0 (en) 1989-11-01
CA2002118A1 (en) 1990-05-03
GB8825791D0 (en) 1988-12-07
EP0367520A2 (en) 1990-05-09
JPH02169791A (en) 1990-06-29

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