(19)

(11)

EP 2 297 399 A2

(12)

(88) Date of publication A3: 21.01.2010 (43) Date of publication: 23.03.2011 Bulletin 2011/12 (21) Application number: 09754032.2 (22) Date of filing: 27.05.2009

(51) International Patent Classification (IPC):  D21H 17/46(2006.01) (86) International application number: PCT/FI2009/050449 (87) International publication number: WO 2009/144379 (03.12.2009 Gazette 2009/49)

(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 MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 27.05.2008 DE 102008025269 (71) Applicant: Ahlstrom Corporation 00180 Helsinki (FI)	(72) Inventor: CONRADI, Bernd 57250 Netphen-Hainchen (DE) (74) Representative: Hovi, Simo Pekka Tapani  Coor Service Management Karhula Oy Intellectual Property Deparment Antintie 7 48601 Kotka 48601 Kotka (FI)