(19)

(11)

EP 1 153 169 A1

(12)

(43) Date of publication: 14.11.2001 Bulletin 2001/46 (21) Application number: 99958204.2 (22) Date of filing: 24.11.1999

(51) International Patent Classification (IPC)7: D21F 1/00, D21F 11/00 (86) International application number: PCT/FI9900/967 (87) International publication number: WO 0031/337 (02.06.2000 Gazette 2000/22)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 24.11.1998 FI 982539 (71) Applicant: Metso Paper, Inc.(Reg.No. 763281) 00130 Helsinki (FI)	(72) Inventors: SAVIA, Risto FIN-48910 Kotka (FI) KOSKINEN, Jorma FIN-48510 Kotka (FI) LUND N, Leo FIN-48800 Karhula (FI) MARKKANEN, Esa FIN-48230 Kotka (FI) PAKKALA, Ilkka FIN-48600 Karhula (FI) (74) Representative: LEITZINGER OY  Ruoholahdenkatu 8 00180 Helsinki 00180 Helsinki (FI)