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(11)

EP 1 636 417 A1

(12)

(43) Date of publication: 22.03.2006 Bulletin 2006/12 (21) Application number: 04728363.5 (22) Date of filing: 20.04.2004

(51) International Patent Classification (IPC):  D21F 7/08(1968.09) D21G 1/00(1968.09) (86) International application number: PCT/FI2004/050042 (87) International publication number: WO 2004/106628 (09.12.2004 Gazette 2004/50)

(84) Designated Contracting States: SE (30) Priority: 30.05.2003 FI 20030815 (71) Applicant: Metso Paper, Inc. 00130 Helsinki (FI)	(72) Inventor: LEPOLA, Maria FIN-02170 Espoo (FI) (74) Representative: Johansson, Lars-Erik  Hynell Patenttjänst AB Patron Carls väg 2 683 40 Hagfors / Uddeholm 683 40 Hagfors / Uddeholm (SE)