BR9808431A - Paper or cardboard machine and method for controlling paper curl - Google Patents

Paper or cardboard machine and method for controlling paper curl

Info

Publication number
BR9808431A
BR9808431A BR9808431-3A BR9808431A BR9808431A BR 9808431 A BR9808431 A BR 9808431A BR 9808431 A BR9808431 A BR 9808431A BR 9808431 A BR9808431 A BR 9808431A
Authority
BR
Brazil
Prior art keywords
paper
curl
solids content
web
dry solids
Prior art date
Application number
BR9808431-3A
Other languages
Portuguese (pt)
Inventor
Vesa Ijos
Kari Juppi
Pasi Ahonen
Jaako Kallioniemi
Original Assignee
Valmet 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 Valmet Corp filed Critical Valmet Corp
Publication of BR9808431A publication Critical patent/BR9808431A/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/08—Arrangement of steam points in the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders

Abstract

The invention concerns a method in the dryer section of a paper or board machine for control of the curl of paper, in which method steam treatment and/or moistening of the paper web (W) is/are employed. In the method, the operations carried out in view of controlling the curl of the paper web (W) are carried out in a number of stages and/or when the web (W) temperature is lower than 85 DEG C, preferably lower than 75 DEG C, and/or when the dry solids content of the web (W) is in the range of K1...K2, wherein K1 = ultimate dry solids content - 7 % and K2 = ultimate dry solids content + 3 %. Further, the invention concerns a paper or board machine, which comprises at least a headbox, a former, a press, and a dryer section, in which steam boxes or moistening devices are employed for control of the curl. There are at least two of said curl regulation devices in view of achieving a regulation of the curl in a number of stages, and/or said curl regulation devices have been fitted to operate in an area in which the web temperature is lower than 85 DEG C, preferably lower than 75 DEG C, and/or the dry solids content of the web is in a range of K1...K2, wherein K1 = ultimate dry solids content - 7 % and K2 = ultimate dry solids content + 3 %.
BR9808431-3A 1997-03-27 1998-03-23 Paper or cardboard machine and method for controlling paper curl BR9808431A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI971301A FI971301A (en) 1997-03-27 1997-03-27 Method for controlling paper curl with a dryer section of a paper machine and a paper or board machine
PCT/FI1998/000253 WO1998044191A1 (en) 1997-03-27 1998-03-23 Method for control of the curl of paper in the dryer section of a paper machine and paper or board machine

Publications (1)

Publication Number Publication Date
BR9808431A true BR9808431A (en) 2000-05-23

Family

ID=8548489

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9808431-3A BR9808431A (en) 1997-03-27 1998-03-23 Paper or cardboard machine and method for controlling paper curl

Country Status (10)

Country Link
EP (1) EP1012383B1 (en)
JP (1) JP3660360B2 (en)
CN (1) CN1101499C (en)
AT (1) ATE329082T1 (en)
AU (1) AU6502198A (en)
BR (1) BR9808431A (en)
CA (1) CA2284053C (en)
DE (1) DE69834820T2 (en)
FI (1) FI971301A (en)
WO (1) WO1998044191A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112684B (en) 1999-03-23 2003-12-31 Metso Paper Inc Method for Measuring and Adjusting Curvature of a Paper or Cardboard Web and a Paper or Cardboard Machine Line
FI106269B (en) 1999-05-10 2000-12-29 Valmet Corp Blow arrangement and method for compensating the curl tendency of paper or cardboard webs and a paper or cardboard machine
JP4651314B2 (en) * 2004-06-15 2011-03-16 レンゴー株式会社 Surface smoothing equipment for paper and paperboard
DE102005034065A1 (en) * 2005-07-21 2007-01-25 Voith Patent Gmbh drying section
US8277610B2 (en) * 2007-04-10 2012-10-02 Xerox Corporation Mechanical fiber paper with controlled curl
DE102010039093A1 (en) * 2010-08-09 2012-02-09 Voith Patent Gmbh Method and device for controlling the moisture of a material web
CN103669088A (en) * 2012-09-10 2014-03-26 国能纸业有限公司 Front drying system used for multi-cylinder long mesh paper machine
EP2765237B1 (en) 2013-02-06 2016-11-23 Valmet Technologies, Inc. Method for producing a fiber web and production line for producing a fiber web
CN104859291B (en) 2015-04-13 2017-12-29 京东方科技集团股份有限公司 A kind of drying device and its drying means
CN110446811B (en) * 2017-03-21 2021-06-04 福伊特专利有限公司 Web treatment
CN108166315A (en) * 2017-12-08 2018-06-15 安徽金亿禾特种纸有限公司 A kind of method of modifying for making carbon copies paper web
CN112748237B (en) * 2020-12-29 2022-06-10 亚太森博(广东)纸业有限公司 Original warping detection method for copy paper

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI91900C (en) * 1990-12-17 1994-08-25 Valmet Paper Machinery Inc Process at the drying portion of a paper machine to reduce the curvature tendency and drying portion of the paper intended to carry out the procedure
DE9414963U1 (en) * 1994-09-16 1994-11-03 Voith Gmbh J M Dryer section
FI98387C (en) * 1995-02-01 1997-06-10 Valmet Corp Method for the production of surface-treated paper, in particular fine paper, and the dry end of a paper machine

Also Published As

Publication number Publication date
FI971301A (en) 1998-09-28
CN1101499C (en) 2003-02-12
ATE329082T1 (en) 2006-06-15
JP3660360B2 (en) 2005-06-15
EP1012383A1 (en) 2000-06-28
CN1251629A (en) 2000-04-26
FI971301A0 (en) 1997-03-27
CA2284053A1 (en) 1998-10-08
DE69834820T2 (en) 2006-11-09
EP1012383B1 (en) 2006-06-07
AU6502198A (en) 1998-10-22
DE69834820D1 (en) 2006-07-20
JP2001503484A (en) 2001-03-13
CA2284053C (en) 2005-11-22
WO1998044191A1 (en) 1998-10-08

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/03/1998, OBSERVADAS AS CONDICOES LEGAIS.

B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 14A ANUIDADE, CONFORME ART. 87 DA LPI 9.279.

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 14A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.