(19)

(11)

EP 2 539 504 A1

(12)

(43) Date of publication: 02.01.2013 Bulletin 2013/01 (21) Application number: 11704981.7 (22) Date of filing: 22.02.2011

(51) International Patent Classification (IPC):  D21C 9/18(2006.01) D21F 1/78(2006.01) (86) International application number: PCT/EP2011/052548 (87) International publication number: WO 2011/104209 (01.09.2011 Gazette 2011/35)

(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: 25.02.2010 SE 1050177 (71) Applicant: Andritz Oy 00180 Helsinki (FI)	(72) Inventor: NÄSLUND, Fredrik S-665 35 Kil (SE) (74) Representative: Simonsson, Erik et al Awapatent AB P.O. Box 5117 20071 Malmö 20071 Malmö (SE)