GB1447933A - Manufacture of watermarked paper - Google Patents
Manufacture of watermarked paperInfo
- Publication number
- GB1447933A GB1447933A GB2364574A GB2364574A GB1447933A GB 1447933 A GB1447933 A GB 1447933A GB 2364574 A GB2364574 A GB 2364574A GB 2364574 A GB2364574 A GB 2364574A GB 1447933 A GB1447933 A GB 1447933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- carrier
- paper
- watermarking
- embossing
- 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
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
1447933 Watermarking paper PORTALS Ltd and A J TOOTH 26 June 1975 [28 May 1974] 23645/74 Heading D2A Paper is watermarked during or after formation using an endless flexible carrier 7, 32 or 51 moving in a non-circular path around spaced axes and carrying embossing and/or shaped projecting attachments, for producing a watermark in paper, the carrier being replaceable by another of different length by adjusting the spacing of the axes. The carrier may be a foraminous bronze wire belt, alone or supported, as in Fig. 6, by another belt, e.g. of plastic mesh in which case the support belt 53 may be correspondingly embossed to prevent the embossing of the belt 51 from being crushed. In a Fourdrinier machine (Fig. 1) the belt 7 may be guided around a driven dandy roll 6, which may contain vacuum and/or over-pressure chambers, and an adjustable roll 8. Alternatively (as in Fig. 5 not shown) the Fourdrinier wire may itself constitute the watermarking carrier. When applied to a cylinder machine (Fig. 4), the belt 32 passes around the surface of the cylinder mould 35 and at least one adjustable roll 33, 34.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2364574A GB1447933A (en) | 1974-05-28 | 1974-05-28 | Manufacture of watermarked paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2364574A GB1447933A (en) | 1974-05-28 | 1974-05-28 | Manufacture of watermarked paper |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1447933A true GB1447933A (en) | 1976-09-02 |
Family
ID=10198988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2364574A Expired GB1447933A (en) | 1974-05-28 | 1974-05-28 | Manufacture of watermarked paper |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1447933A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402033A1 (en) * | 1977-09-06 | 1979-03-30 | Beloit Walmsley Ltd | Longitudinally and vertically adjustable unit for upwards extraction - produces high quality thin papers without reverse side effect |
US4462866A (en) * | 1981-02-19 | 1984-07-31 | Portals Limited | Sheet materials |
US4462867A (en) * | 1981-07-13 | 1984-07-31 | Portals Limited | Paper incorporating a partially embedded strip |
EP0367520A2 (en) * | 1988-11-03 | 1990-05-09 | The Wiggins Teape Group Limited | Improvements in apparatus for forming watermarks in paper |
US5100512A (en) * | 1990-09-11 | 1992-03-31 | The Mead Corporation | Dandy roll having a twill weave wiremark and related method for papermaking |
GB2260772A (en) * | 1991-10-25 | 1993-04-28 | Portals Ltd | Method for making sheet materials such as security paper |
US5766416A (en) * | 1989-12-14 | 1998-06-16 | Tokushu Paper Manufacturing Co., Ltd. | Method of producing watermark paper |
US5871615A (en) * | 1994-06-14 | 1999-02-16 | The Wiggins Teape Group Limited | Method for the manufacture of security paper |
-
1974
- 1974-05-28 GB GB2364574A patent/GB1447933A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402033A1 (en) * | 1977-09-06 | 1979-03-30 | Beloit Walmsley Ltd | Longitudinally and vertically adjustable unit for upwards extraction - produces high quality thin papers without reverse side effect |
US4462866A (en) * | 1981-02-19 | 1984-07-31 | Portals Limited | Sheet materials |
US4462867A (en) * | 1981-07-13 | 1984-07-31 | Portals Limited | Paper incorporating a partially embedded strip |
EP0367520A2 (en) * | 1988-11-03 | 1990-05-09 | The Wiggins Teape Group Limited | Improvements in apparatus for forming watermarks in paper |
EP0367520A3 (en) * | 1988-11-03 | 1991-08-14 | The Wiggins Teape Group Limited | Improvements in apparatus for forming watermarks in paper |
US5766416A (en) * | 1989-12-14 | 1998-06-16 | Tokushu Paper Manufacturing Co., Ltd. | Method of producing watermark paper |
US5100512A (en) * | 1990-09-11 | 1992-03-31 | The Mead Corporation | Dandy roll having a twill weave wiremark and related method for papermaking |
GB2260772A (en) * | 1991-10-25 | 1993-04-28 | Portals Ltd | Method for making sheet materials such as security paper |
US5405500A (en) * | 1991-10-25 | 1995-04-11 | Portals Limited | Method for making sheet materials and security paper |
GB2260772B (en) * | 1991-10-25 | 1995-05-10 | Portals Ltd | Method for making sheet materials and security paper |
US5871615A (en) * | 1994-06-14 | 1999-02-16 | The Wiggins Teape Group Limited | Method for the manufacture of security paper |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19950625 |