(19)

(11)

EP 0 418 364 A1

(12)

(43) Date of publication: 27.03.1991 Bulletin 1991/13 (21) Application number: 90905542.0 (22) Date of filing: 03.04.1990

(51) International Patent Classification (IPC):  B31F 1/ 28( . ) (86) International application number: PCT/FI1990/000088 (87) International publication number: WO 1990/011887 (18.10.1990 Gazette 1990/24)

(84) Designated Contracting States: BE DE FR GB NL SE (30) Priority: 06.04.1989 FI 19890001649 (71) Applicant: ENSO-GUTZEIT OY SF-00160 Helsinki (FI)	(72) Inventors: PENTTINEN, Tapani SF-49210 Huutjärvi (FI) LEHTINEN, Mirja SF-33720 Tampere (FI) NOUSIAINEN, Hannu SF-15550 Nastola 2 (FI) (74) Representative: Willquist, Bo Lorentz  Albihn Willquist AB S:t Larsgatan 23 S-582 24 Linköping S-582 24 Linköping (SE)