(19)

(11)

EP 1 687 479 A1

(12)

(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04818842.9 (22) Date of filing: 18.11.2004

(51) International Patent Classification (IPC):  D21F 7/00(2006.01) D21G 1/00(2006.01) D21G 3/00(2006.01) (86) International application number: PCT/FI2004/050167 (87) International publication number: WO 2005/049919 (02.06.2005 Gazette 2005/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 21.11.2003 FI 20035217 12.12.2003 FI 20035232 (71) Applicant: Metso Paper, Inc. 00130 Helsinki (FI)	(72) Inventors: NORRBY, Tomi FI-08150 Lohja (FI) HASSINEN, Reijo FI-41310 Leppävesi (FI) HEIKKINEN, Jukka, T. FI-40740 Jyväskylä (FI) MAJA, Marko FI-40900 Säynätsälo (FI) PAJALA, Matti FI-40740 Jyväskylä (FI) (74) Representative: Rönkkö, Taina Mirjam et al Tampereen Patenttitoimisto Oy Hermiankatu 12 B 33720 Tampere 33720 Tampere (FI)