(19)

(11)

EP 0 874 936 A1

(12)

(43) Date of publication: 04.11.1998 Bulletin 1998/45 (21) Application number: 97936918.0 (22) Date of filing: 28.08.1997

(51) International Patent Classification (IPC):  B04C 5/ 26( . ) D21D 5/ 24( . ) (86) International application number: PCT/SE1997/001437 (87) International publication number: WO 1998/011296 (19.03.1998 Gazette 1998/11)

(84) Designated Contracting States: AT DE ES FI FR GB GR IT (30) Priority: 16.09.1996 SE 19960003346 (71) Applicant: ALFA LAVAL AB 221 86 Lund (SE)	(72) Inventors: ANDERSSON, Roine S-175 64 Järfälla (SE) BACKMAN, Jan S-175 60 Järfälla (SE) (74) Representative: Lerwill, John, et al  A.A. Thornton & Co. Northumberland House 303-306 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)