(19)

(11)

EP 0 252 903 A1

(12)

(43) Date of publication: 20.01.1988 Bulletin 1988/03 (21) Application number: 85904821.0 (22) Date of filing: 30.09.1985

(51) International Patent Classification (IPC):  B01F 3/ 04( . ) B01F 7/ 00( . ) B01F 13/ 00( . ) B01F 7/ 18( . ) B01F 7/ 16( . ) (86) International application number: PCT/FI1985/000081 (87) International publication number: WO 1986/005123 (12.09.1986 Gazette 1986/20)

(84) Designated Contracting States: AT DE FR GB IT SE (30) Priority: 07.03.1985 FI 19850000918 (71) Applicant: PLANSELL OY SF-00250 Helsinki (FI)	(72) Inventor: SIVONEN, Markus SF-00250 Helsinki (FI) (74) Representative: Billberg, Hans  Axel Ehrners Patentbyra AB Box 10 316 S-100 55 Stockholm S-100 55 Stockholm (SE)