(19)

(11)

EP 2 344 694 A1

(12)

(43) Date of publication: 20.07.2011 Bulletin 2011/29 (21) Application number: 09818061.5 (22) Date of filing: 28.09.2009

(51) International Patent Classification (IPC):  D21C 9/06(2006.01) D21C 9/18(2006.01) (86) International application number: PCT/SE2009/051072 (87) International publication number: WO 2010/039092 (08.04.2010 Gazette 2010/14)

(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 SM TR Designated Extension States: AL BA RS (30) Priority: 01.10.2008 SE 0802072 (71) Applicant: Metso Paper, Inc. 00101 Helsinki (FI)	(72) Inventors: MATTSSON, Stefan S-862 32 Kvissleby (SE) DANIELSSON, Magnus S-864 91 Matfors (SE) (74) Representative: Saitton, Hanna Johanna  Metso Paper Sweden AB Gustav Gidlöfs väg 4 85194 Sundsvall 85194 Sundsvall (SE)