EP0458973B1 - Method of making watermarked paper - Google Patents

Method of making watermarked paper Download PDF

Info

Publication number
EP0458973B1
EP0458973B1 EP91900050A EP91900050A EP0458973B1 EP 0458973 B1 EP0458973 B1 EP 0458973B1 EP 91900050 A EP91900050 A EP 91900050A EP 91900050 A EP91900050 A EP 91900050A EP 0458973 B1 EP0458973 B1 EP 0458973B1
Authority
EP
European Patent Office
Prior art keywords
wire
pattern
lace
paper
making
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
Application number
EP91900050A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0458973A1 (en
EP0458973A4 (en
Inventor
Kin-Ya 2015-6 Yata Hiyoshi
Takayuki 27-6 Kamo Fukuchi
Tadahiro 260-43 Takehara Iwasaki
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.)
Tokushu Paper Manufacturing Co Ltd
Original Assignee
Tokushu Paper Manufacturing Co 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=18169427&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0458973(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tokushu Paper Manufacturing Co Ltd filed Critical Tokushu Paper Manufacturing Co Ltd
Publication of EP0458973A1 publication Critical patent/EP0458973A1/en
Publication of EP0458973A4 publication Critical patent/EP0458973A4/en
Application granted granted Critical
Publication of EP0458973B1 publication Critical patent/EP0458973B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/44—Watermarking devices
    • D21F1/46—Dandy rolls
    • 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
    • D21F1/60—Cylinder moulds

Definitions

  • This invention relates to a method of easily and economically producing watermarked paper which isaki and has high gradation by utilizing a lace.
  • the meshes of the wire of the pattern portion are closed and the passage of fibrous materials through them is impeded.
  • a wet web is not formed at that portion or even if it is formed, its thickness is reduced, so that a watermark pattern comes into view.
  • the size of the meshes of the face wire closed by the pattern shape is by far greater than a fiber length in this case, holes are formed in the wet web and renders a practical problem. Therefore, limitations must be imposed on the shape, size and distribution of the pattern shape or multi-layered papermaking must be carried out in order to prevent the formation of the holes.
  • the method (c) hammers the pattern as the corrugation of the wire, the meshes of the wire are not closed. Therefore, the watermark pattern is generated due to the difference of drainage rate depending on the height of the corrugation of the wire, its depth, the angle of a slope, and so forth.
  • this method (c) is more excellent in so-called "gradation" which represents a delicate difference of density of the watermark pattern, has the smaller possibility of holes at which the fiber does not at all exist, and has a smaller limitation to the design of the watermark pattern.
  • the production of the wire for the method (c) needs a higher level of technique and skill than the methods (a) and (b).
  • the corrugation pattern itself of the wire is likely to undergo deformation or breakage during the paper making operation.
  • the production methods of watermarked paper described above exhibit the watermark pattern by forming low and high densities in the fiber distribution during the paper making process. Unlike these methods, a method which prints an arbitrary pattern by a transparentizing agent (Japanese Patent Publication No. 3802/1975) and a method using a resin which becomes transparent by hot press and then makes the pattern portion transparent by hot press to obtain a watermark-like pattern (Japanese Patent Laid-Open No. 275500/1986) have been proposed.
  • Japanese Patent Publication Nos. 7725/1972 and 12846/1974 propose a production method of watermark paper having a deep corrugation pattern by using a fourdrinier wire providing a pattern. This method however involves the problem that since the fourdrinier wire providing a pattern rotates while keeping in contact with a large number of rollers and receiving a high tension, the expensive fourdrinier wire providing a pattern is worn out and its travelling stability is not satisfactory.
  • US Patent No. 4526652 discloses a dandy roll for producing paper bearing a watermark which simulates oxford cloth. A pattern is formed on the wire mesh of the roll by soldering on straight electro wires and by removing segments of the wire mesh.
  • a felt roller which can be used to form watermarked paper is formed by sewing or stitching a wool thread into a felt strip.
  • the invention provides a method of producing watermarked paper comprising preparing a cylinder mould of a cylinder-vat machine or a dandy roll having a face wire fitted thereon for providing watermarks in paper, and making paper by using said cylinder mould or said dandy roll having said face wire fitted thereon, characterized in that said face wire comprises a patterned wire prepared by fixing a lace having a through-hole-like pattern, obtained by knitting a synthetic fiber or a natural fiber or by making an embroidery on a base fabric, to the surface of a wire cloth for paper making.
  • the lace used in the present invention thus includes those products which are formed by yarn in a predetermined texture and express a through-hole-like pattern by the density of gaps between the yarns, and includes a fabric lace formed by making an embroidery on a base cloth such as fabric, a knitted fabric and the like (refer to "Modern World Encyclopedia", Vol. 3, page 944 (1972), published by Kodansha).
  • synthetic fibers such as nylon or polyester and natural fibers such as cotton, hemp or wool can be used.
  • arbitrary means such as soldering, sewing, bonding by an adhesive and the like, can be selected depending on the materials of the lace.
  • Appearance of the pattern of watermarked paper in the present invention is based on diversity of the lace texture such as the combination of the thickness of the yarns of the lace constituting the face wire, the density of gaps between the yarns, the variety of the thickness of the pattern portions formed by the degree of overlap of the yarns, and so forth. Accordingly, it is possible to obtain watermarked paper having a complicated and extraordinarily pattern and excellent gradation that the conventional methods have not been able to obtain.
  • Fig. 1 shows a dandy roll 1 which is used when the method of the present invention is practiced by a fourdrinier machine.
  • This dandy roll 1 is produced by fitting a patterned wire, which is formed by fixing and bonding a lace 2 to a wire cloth 3 for papermaking, to a frame 4 of the dandy roll.
  • Fig. 2 shows a cylinder mould 10 used when the method of the present invention is practiced by a cylinder-vat machine.
  • This cylinder mould 10 is produced by fitting a patterned wire, which is formed by fitting and bonding a lace 20 to a wire cloth 30 for papermaking, to a frame 40 of the cylinder.
  • the dandy roll 1 shown in Fig. 1 is disposed and slidably rotated in the process in which wet web is formed on the wire part of the fourdrinier machine or the like, so as to execute paper making, and the resulting wet web is dried in a customary manner.
  • the cylinder mould 10 for the cylinder-vat machine shown in Fig. 2 the cylinder mould 10 is disposed at a predetermined position inside a vat of the cylinder-vat machine and papermaking may be carried out in a customary manner.
  • the cylinder-vat machine includes specific cylinder-vat machines such as a roto-former, a ultra-former, a Stevens former, and so forth.
  • a lace can be used as it is.
  • a lace can be used as it is.
  • a patterned wire was produced by fixing and bonding integrally a lace obtained by knitting polyester filaments and having a flower pattern to a 90-mesh wire cloth made of bronze by using an epoxy type adhesive (trade name "Araldite 106", a product of CIBA-GEIGY Co.), and this patterned wire was fitted as a face wire to a cylinder mould.
  • watermarked paper having a basis weight of 120 g/m2 was produced using paper stock having the following composition (per beater): NBKP 150 Kg LBKP (degree of beating: 400 cc CSF) 390 Kg rosin size ("SPN700", a trade name, a product of Arakawa Rinsan Kagaku Kabushiki Kaisha) 7.2 Kg dry strength agent ("POLYSTRON ST13", a trade name, a product of Misawa Ceramic Kabushiki Kaisha) 20 Kg starch (“AMYCOL", a trade name, a product of Nigorgen Kagaku Kabushiki Kaisha) 3 Kg fixing agent (Aluminum sulfate) 30 Kg dyes (products of BAYER Co., Ltd.) LEVACELL FAST YELLOW GFN (L) 0.02 %* LEVACELL FAST BLACK G 0.002 %* * Based on the plup
  • the lace obtained in this manner was integrally fixed and bonded to a wire cloth made of bronze by an adhesive (the same epoxy resin as described above) to produce a patterned wire and this patterned wire was fitted as a face wire to a dandy roll.
  • the dandy roll was placed on a wire part of a fourdrinier machine and was brought into rolling contact with wet web (dry basis weight: 110 g/m2) having the same paper stock composition as in Example 1. Thereafter, paper was dried in a customary manner.

Landscapes

  • Paper (AREA)
EP91900050A 1989-12-14 1990-12-10 Method of making watermarked paper Expired - Lifetime EP0458973B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP324765/89 1989-12-14
JP32476589A JPH0686719B2 (ja) 1989-12-14 1989-12-14 透き入れ紙の製造方法
PCT/JP1990/001602 WO1991009172A1 (en) 1989-12-14 1990-12-10 Method of making watermarked paper

Publications (3)

Publication Number Publication Date
EP0458973A1 EP0458973A1 (en) 1991-12-04
EP0458973A4 EP0458973A4 (en) 1992-06-03
EP0458973B1 true EP0458973B1 (en) 1995-05-24

Family

ID=18169427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91900050A Expired - Lifetime EP0458973B1 (en) 1989-12-14 1990-12-10 Method of making watermarked paper

Country Status (4)

Country Link
EP (1) EP0458973B1 (ja)
JP (1) JPH0686719B2 (ja)
DE (1) DE69019737T2 (ja)
WO (1) WO1991009172A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015006264A1 (en) * 2013-07-09 2015-01-15 Georgia-Pacific Gypsum Llc Selectively sized multi-ply core stock paper, methods, and apparatus
EP2947202A1 (de) 2014-05-21 2015-11-25 Landqart AG Sicherheitspapier mit wasserzeichen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769927B1 (fr) * 1997-10-20 1999-12-24 Thibierge Et Comar Papier comportant un motif en relief, son procede de fabrication et toile pour sa fabrication
DE102008024401B3 (de) * 2008-05-20 2010-01-07 Hans Grossmann Entwässerungssieb für eine Saugwalze einer Papiermaschine
CN101372816B (zh) * 2008-09-20 2011-04-20 李�昊 真空圆网笼的壳体
CN102373642B (zh) * 2011-11-10 2014-07-23 保定钞票纸业有限公司 一种二维码水印防伪纸的制造方法
CN103128471A (zh) * 2013-03-19 2013-06-05 四川大学 白水印自动焊接系统
CN105672042B (zh) * 2016-01-21 2018-08-07 成都印钞有限公司 一种具有潜影水印的防伪纸张以及该纸张的制作工艺
CN111231493A (zh) * 2019-12-13 2020-06-05 成都印钞有限公司 纸张成型模具、模具制作方法及由成型模具制造的纸张

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526652A (en) * 1983-11-17 1985-07-02 The Mead Corporation Dandy roll for manufacturing paper having simulated oxford cloth watermark and related method for papermaking

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59473C (de) * E. HOESCH, Königlicher Kommerzienrath, in Düren und M. KRAUSE in Berlin S.W., Beuthstrafse 7 Erzeugung farbiger Wasserzeichen auf der Papiermaschine
DE116431C (ja) *
US1514238A (en) * 1922-04-07 1924-11-04 F C Huyck & Sons Means for watermarking paper
GB373905A (en) * 1930-10-20 1932-06-02 Nat Bank Of Hungary Process for the production of genuine watermark papers without using relief moulds
CH206738A (de) * 1937-11-12 1939-08-31 Ernst Walter Ludwig Reliefschablone zur Erzeugung echter Relief-Wasserzeichen.
CH244613A (de) * 1945-05-25 1946-09-30 Reinhardt Erwin Einrichtung an Papiermaschinen zur Herstellung von in der Durchsicht durch das Papier gegenüber demselben dunkler erscheinenden Wasserzeichen.
JPS5341523Y2 (ja) * 1973-05-14 1978-10-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526652A (en) * 1983-11-17 1985-07-02 The Mead Corporation Dandy roll for manufacturing paper having simulated oxford cloth watermark and related method for papermaking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015006264A1 (en) * 2013-07-09 2015-01-15 Georgia-Pacific Gypsum Llc Selectively sized multi-ply core stock paper, methods, and apparatus
EP2947202A1 (de) 2014-05-21 2015-11-25 Landqart AG Sicherheitspapier mit wasserzeichen

Also Published As

Publication number Publication date
DE69019737T2 (de) 1996-02-08
EP0458973A1 (en) 1991-12-04
JPH0686719B2 (ja) 1994-11-02
WO1991009172A1 (en) 1991-06-27
DE69019737D1 (de) 1995-06-29
EP0458973A4 (en) 1992-06-03
JPH03185200A (ja) 1991-08-13

Similar Documents

Publication Publication Date Title
EP0269070B1 (en) Composite forming fabric
US5766416A (en) Method of producing watermark paper
CN1118594C (zh) 造纸表面中织入缝编纱线对的多层成型织物
KR101097745B1 (ko) 적어도 둘 이상의 상부층 웨프트 얀들 사이의 평면 차이에의해 정의되는 포켓면적을 갖는 다수층 초지기 직물
CA1117799A (en) Fabrics for papermaking machines
US5092372A (en) Paper forming fabric with partner yarns
KR101097748B1 (ko) 바인더 사의 트리플렛과 함께 결속되는 2개의 날실시스템으로 이루어진 다층 성형 직물
FI96791C (fi) Kudottu kangas paperikonetta tai vastaavaa varten ja menetelmä tällaisen kankaan valmistamiseksi
JP3174057B2 (ja) 製紙機に使用される織布
US7207356B2 (en) Through air dryer fabric
CA2163096A1 (en) Papermaking fabric for making soft tissue products
EP0458973B1 (en) Method of making watermarked paper
EP0964088B1 (en) Fabric for forming fibre cement articles
FI64825B (fi) Pappersmaskinfilt speciellt foer dess vaotparti
CA1290181C (en) Sixteen harness dual layer weave
CA1156081A (en) Endless forming fabrics with bi-crimp characteristics
ZA200006317B (en) Papermaking belt having reinforcing piles.
US2581790A (en) Industrial and papermaker's felt
KR20050086505A (ko) 상부층의 쌍을 이루는 웨프트 및 여분의 중간층 웨프트를갖는 성형용 직물
JP2592377B2 (ja) 透き入れ用模様網及びそれを使用した透き入れ紙の製造方法
JP3360145B2 (ja) 製紙用プレスフエルトおよびその製造方法
US7585394B2 (en) Wire cloth, in particular paper making wire cloth
EP0972876A2 (en) Improvements in papermaking fabrics
JP2975723B2 (ja) 模様紙の製造法
EP1507041B1 (en) Papermachine fabric seaming

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910813

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

A4 Supplementary search report drawn up and despatched

Effective date: 19920413

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 19940516

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 69019737

Country of ref document: DE

Date of ref document: 19950629

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

26 Opposition filed

Opponent name: GIESECKE & DEVRIENT GMBH

Effective date: 19960223

R26 Opposition filed (corrected)

Opponent name: GIESECKE & DEVRIENT GMBH

Effective date: 19960223

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19980519

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20091215

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20091221

Year of fee payment: 20

Ref country code: IT

Payment date: 20091215

Year of fee payment: 20

Ref country code: GB

Payment date: 20091209

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20091203

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20101209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20101209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20101210