(19)

(11)

EP 2 188 447 A1

(12)

(43) Date of publication: 26.05.2010 Bulletin 2010/21 (21) Application number: 08805424.2 (22) Date of filing: 10.09.2008

(51) International Patent Classification (IPC):  D21G 3/00(2006.01) (86) International application number: PCT/FI2008/050501 (87) International publication number: WO 2009/034228 (19.03.2009 Gazette 2009/12)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 11.09.2007 FI 20075632 (71) Applicant: Metso Paper, Inc. 00130 Helsinki (FI)	(72) Inventor: EERIKÄINEN, Hannu FI-78250 Varkaus (FI) (74) Representative: TBK-Patent  Bavariaring 4-6 80336 München 80336 München (DE)