(19)

(11)

EP 2 201 171 A1

(12)

(43) Date of publication: 30.06.2010 Bulletin 2010/26 (21) Application number: 08839495.2 (22) Date of filing: 16.10.2008

(51) International Patent Classification (IPC):  D21H 11/12(2006.01) D21D 5/00(2006.01) (86) International application number: PCT/FI2008/050580 (87) International publication number: WO 2009/050338 (23.04.2009 Gazette 2009/17)

(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: 18.10.2007 FI 20075735 (71) Applicant: Chempolis Oy 90650 Oulu (FI)	(72) Inventors: ROUSU, Päivi FI-90650 Oulu (FI) HYTÖNEN, Keijo FI-90650 Oulu (FI) (74) Representative: Puranen, Maija-Liisa  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 FIN-00121 Helsinki FIN-00121 Helsinki (FI)