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(11)

EP 2 212 471 A1

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(43) Date of publication: 04.08.2010 Bulletin 2010/31 (21) Application number: 08854819.3 (22) Date of filing: 04.11.2008

(51) International Patent Classification (IPC):  D21F 1/00(2006.01) D21F 1/48(2006.01) D21F 11/04(2006.01) D21F 1/52(2006.01) (86) International application number: PCT/FI2008/050627 (87) International publication number: WO 2009/068728 (04.06.2009 Gazette 2009/23)

(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: 28.11.2007 FI 20075851 (71) Applicant: Metso Paper, Inc. 00130 Helsinki (FI)	(72) Inventors: TURPEINEN, Hannu FI-40520 Jyväskylä (FI) POIKOLAINEN, Antti FI-40250 Jyväskylä (FI) RÄISÄNEN, Kari FI-40500 Jyväskylä (FI) (74) Representative: TBK-Patent  Bavariaring 4-6 80336 München 80336 München (DE)