Global Patent Index - EP 1009876 A1

EP 1009876 A1 2000-06-21 - METHOD FOR CONTROLLING THE CURL OF PAPER AND A PAPER OR BOARD MACHINE LINE THAT APPLIES THE METHOD

Title (en)

METHOD FOR CONTROLLING THE CURL OF PAPER AND A PAPER OR BOARD MACHINE LINE THAT APPLIES THE METHOD

Title (de)

VERFAHREN ZUR STEUERUNG VON BLATTWELLUNGEN UND PAPIER- ODER PAPPEMASCHINE ZUR DURCHFÜHRUNG DES VERFAHRENS

Title (fr)

PROCEDE DE TUILAGE DU PAPIER ET CHAINE DE MACHINES A PAPIER OU CARTON UTILISANT CE PROCEDE

Publication

EP 1009876 A1 (EN)

Application

EP 98921505 A

Priority

  • FI 9800395 W
  • FI 972080 A

Abstract (en)

[origin: WO9851857A1] The invention concerns a method for controlling the curl of paper, in which method steam treatment and/or moistening of the paper web (W) and/or equivalent operations are employed in order to control the curl of the paper web (W). In the method, the operations for controlling the curl of the paper web (W) are carried out after the calendering process carried out in the calender (40) or, in processes in which calendering is not employed, in connection with the machine reel-up or in process steps carried out after the machine reel-up. The invention also concerns a paper or board machine, which comprises at least a headbox, a former, a press, and a dryer section, in which paper or board machine steam boxes and/or moistening devices and/or an IR dryer and/or equivalent devices for the control of the curl are employed. The steam boxes and/or moistening devices and/or IR dryers and/or the equivalent curl control devices for the control of the curl of the paper web (W) are placed after the calender (40) or, if no calender is employed, in connection with the machine reel-up or in connection with a finishing process carried out after the machine reel-up.

IPC 1-7 (main, further and additional classification)

D21F 5/04

IPC 8 full level (invention and additional information)

D21F 5/00 (2006.01); D21F 7/00 (2006.01); D21G 1/00 (2006.01); D21G 7/00 (2006.01)

CPC (invention and additional information)

D21G 7/00 (2013.01); D21F 5/00 (2013.01); D21F 5/002 (2013.01); D21F 7/00 (2013.01); D21F 7/008 (2013.01); D21G 1/00 (2013.01)

Citation (search report)

See references of WO 9851857A1

Designated contracting state (EPC)

AT DE FR GB IT SE

EPO simple patent family

WO 9851857 A1 19981119; AU 7433198 A 19981208; CA 2289475 A1 19981119; EP 1009876 A1 20000621; FI 106271 B 20001229; FI 972080 A0 19970515; FI 972080 A 19981116

INPADOC legal status


2004-10-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040419

2004-01-21 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031208

2001-08-22 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: METSO PAPER, INC.

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991112

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE FR GB IT SE