(19)

(11)

EP 1 157 163 A1

(12)

(43) Date of publication: 28.11.2001 Bulletin 2001/48 (21) Application number: 99965619.2 (22) Date of filing: 02.12.1999

(51) International Patent Classification (IPC)7: D21F 3/02, D21F 9/02 (86) International application number: PCT/SE9902/250 (87) International publication number: WO 0034/571 (15.06.2000 Gazette 2000/24)

(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: 07.12.1998 SE 9804231 22.01.1999 US 116858 P (71) Applicant: Valmet-Karlstad AB 651 15 Karlstad (SE)	(72) Inventors: LEANDERSSON, Per, Anders, Artur S-652 29 Karlstad (SE) SALOMONSSON, Carl-Gustaf S-665 94 Fager s (SE) (74) Representative: Lundquist, Lars-Olof  L-O Lundquist Patentbyra AB,Box 80 651 03 Karlstad 651 03 Karlstad (SE)