(19)

(11)

EP 0 589 872 A1

(12)

(43) Date of publication: 06.04.1994 Bulletin 1994/14 (21) Application number: 91907310.0 (22) Date of filing: 13.03.1991

(51) International Patent Classification (IPC):  B29C 70/ 50( . ) B29D 99/ 00( . ) B29C 70/ 54( . ) (86) International application number: PCT/US1991/001636 (87) International publication number: WO 1992/016347 (01.10.1992 Gazette 1992/25)

(84) Designated Contracting States: AT BE DE DK ES FR GB IT NL SE (71) Applicant: SANDT, Hartley Orange Park, FL 32073 (US)	(72) Inventor: SANDT, Hartley Orange Park, FL 32073 (US) (74) Representative: Williams, John Francis, et al  WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB London WC2E 7PB (GB)