(19)

(11)

EP 0 853 699 A1

(12)

(43) Date of publication: 22.07.1998 Bulletin 1998/30 (21) Application number: 96932919.0 (22) Date of filing: 01.10.1996

(51) International Patent Classification (IPC):  B30B 9/ 14( . ) B30B 9/ 12( . ) D21C 9/ 02( . ) B01D 29/ 11( . ) B30B 9/ 26( . ) D21C 9/ 18( . ) (86) International application number: PCT/SE1996/001226 (87) International publication number: WO 1997/013026 (10.04.1997 Gazette 1997/16)

(84) Designated Contracting States: AT DE FI FR GB IT (30) Priority: 02.10.1995 SE 19950003383 (71) Applicant: Alfa Laval Celleco AB 147 80 Tumba (SE)	(72) Inventor: BERGGREN, Torsten Lennart 312 60 Mellbystrand (SE) (74) Representative: Lerwill, John, et al  A.A. Thornton & Co. Northumberland House 303-306 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)