(19)

(11)

EP 0 925 141 A2

(12)

(43) Date of publication: 30.06.1999 Bulletin 1999/26 (21) Application number: 97937715.0 (22) Date of filing: 27.08.1997

(51) International Patent Classification (IPC):  B23K 26/ 06( . ) B29C 65/ 02( . ) B29C 65/ 74( . ) B23K 26/ 18( . ) B29C 65/ 16( . ) (86) International application number: PCT/GB1997/002283 (87) International publication number: WO 1998/008645 (05.03.1998 Gazette 1998/09)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 27.08.1996 GB 19960017821 09.04.1997 GB 19970007203 (60) Divisional application: 99200952.2 / 0953399 (71) Applicant: British Polythene Limited Greenock PA15 2RP (GB)	(72) Inventors: JONES, Robert Cambridge CB4 3AH (GB) HAZELL, Michael Cambridge CB4 1JD (GB) (74) Representative: Ede, Eric  Fitzpatricks, 4 West Regent Street Glasgow G2 1RS, Scotland Glasgow G2 1RS, Scotland (GB)