(19)

(11)

EP 0 243 349 A1

(12)

(43) Date of publication: 04.11.1987 Bulletin 1987/45 (21) Application number: 85905280.0 (22) Date of filing: 09.10.1985

(51) International Patent Classification (IPC):  B21D 17/ 04( . ) B21D 22/ 10( . ) (86) International application number: PCT/US1985/001969 (87) International publication number: WO 1987/002282 (23.04.1987 Gazette 1987/09)

(84) Designated Contracting States: BE DE FR GB IT NL (71) Applicant: NATIONAL CAN CORPORATION Chicago Illinois 60631 (US)	(72) Inventors: SHULSKI, Michael, M. Northfield, IL 60093 (US) MANN, John, M. Downers Grove, IL 60515 (US) (74) Representative: Strehl Schübel-Hopf Groening & Partner  Maximilianstrasse 54 D-80538 München D-80538 München (DE)