(19)

(11)

EP 2 430 233 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 11713494.0 (22) Date of filing: 10.03.2011

(51) International Patent Classification (IPC):  D21C 11/00(2006.01) (86) International application number: PCT/FI2011/050206 (87) International publication number: WO 2011/110746 (15.09.2011 Gazette 2011/37)

(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 RS SE SI SK SM TR (30) Priority: 11.03.2010 FI 20105243 (71) Applicant: Metso Paper, Inc. 00130 Helsinki (FI)	(72) Inventor: LAMMI, Lari FI-28220 Pori (FI) (74) Representative: Langenskiöld, Tord Karl Walter et al Oy Jalo Ant-Wuorinen Ab Iso-Roobertinkatu 4-6 A 00120 Helsinki 00120 Helsinki (FI)