(19)

(11)

EP 0 991 820 A1

(12)

(43) Date of publication: 12.04.2000 Bulletin 2000/15 (21) Application number: 98930933.1 (22) Date of filing: 23.06.1998

(51) International Patent Classification (IPC)7: E02D 3/11, E02D 31/02, B29D 28/00 (86) International application number: PCT/GB9801/841 (87) International publication number: WO 9859/117 (30.12.1998 Gazette 1998/52)

(84) Designated Contracting States: DE IT SE (30) Priority: 23.06.1997 GB 9713235 (71) Applicant: Netlon Limited Blackburn,Lancashire BB2 4PJ (GB)	(72) Inventor: WRIGLEY, Nigel, Edwin Lancashire BB2 7AQ (GB) (74) Representative: Lyndon-Stanford, Edward Willoughby Brooke et al MARKS & CLERK,57/60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)