(19)

(11)

EP 0 777 618 A1

(12)

(43) Date of publication: 11.06.1997 Bulletin 1997/24 (21) Application number: 95931459.0 (22) Date of filing: 01.09.1995

(51) International Patent Classification (IPC):  B65D 21/ 02( . ) B65D 81/ 26( . ) (86) International application number: PCT/NO1995/000148 (87) International publication number: WO 1996/007603 (14.03.1996 Gazette 1996/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.09.1994 NO 19940003274 (71) Applicant: NORSK HYDRO a.s. 0240 Oslo (NO)	(72) Inventor: BOGEN, Oddvar N-3670 Notodden (NO) (74) Representative: Bleukx, Luc  Norsk Hydro Technology B.V., P.O. Box 2 4540 AA Sluiskil 4540 AA Sluiskil (NL)