(19)

(11)

EP 1 068 016 A1

(12)

(43) Date of publication: 17.01.2001 Bulletin 2001/03 (21) Application number: 99918411.2 (22) Date of filing: 30.03.1999

(51) International Patent Classification (IPC)7: B04B 9/06, B04B 1/04 // B04B5:00 (86) International application number: PCT/SE9900/515 (87) International publication number: WO 9951/353 (14.10.1999 Gazette 1999/41)

(84) Designated Contracting States: AT BE DE DK ES FI FR GB GR IT NL PT SE (30) Priority: 02.04.1998 SE 9801183 (71) Applicant: Alfa Laval AB 147 80 Tumba (SE)	(72) Inventors: HÄLLGREN, Ingvar S-147 41 Tumba (SE) DAVIDSSON, Thomas S-114 29 Stockholm (SE) LARSSON, Leif S-147 52 Tumba (SE) MOBERG, Hans S-118 52 Stockholm (SE) (74) Representative: Lerwill, John et al A.A. Thornton & Co.235 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)