(19)

(11)

EP 2 470 715 A1

(12)

(43) Date of publication: 04.07.2012 Bulletin 2012/27 (21) Application number: 10812405.8 (22) Date of filing: 23.08.2010

(51) International Patent Classification (IPC):  D21C 9/06(2006.01) B01D 29/82(2006.01) B01D 29/78(2006.01) B01D 29/96(2006.01) (86) International application number: PCT/SE2010/050907 (87) International publication number: WO 2011/025446 (03.03.2011 Gazette 2011/09)

(84) Designated Contracting States: AL 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 (30) Priority: 25.08.2009 SE 0901115 (71) Applicant: Metso Paper, Inc. 00101 Helsinki (FI)	(72) Inventors: DANIELSSON, Magnus S-864 91 Matfors (SE) LUNDBERG, Jörgen S-856 43 Sundsvall (SE) ANDERSSON, Rickard S-864 92 Matfors (SE) (74) Representative: Karlsson, Marie  Metso Paper Sweden AB Gustaf Gidlöfs väg 4 85194 Sundsvall 85194 Sundsvall (SE)