(19)

(11)

EP 2 342 380 A1

(12)

(43) Date of publication: 13.07.2011 Bulletin 2011/28 (21) Application number: 09755135.2 (22) Date of filing: 28.05.2009

(51) International Patent Classification (IPC):  D21F 1/80(2006.01) D21F 3/06(2006.01) D21F 2/00(2006.01) (86) International application number: PCT/SE2009/000277 (87) International publication number: WO 2009/145697 (03.12.2009 Gazette 2009/49)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 28.05.2008 SE 0801243 (71) Applicant: Metso Paper, Inc. 00101 Helsinki (FI)	(72) Inventors: ÖDMARK, Leif S-864 33 Mattfors (SE) LÖVGREN, Hans S-855 90 Sundsvall (SE) (74) Representative: Estreen, Lars J.F.  Bergenstråhle & Lindvall AB P.O. Box 17704 118 93 Stockholm 118 93 Stockholm (SE)