(19)

(11)

EP 0 578 678 A1

(12)

(43) Date of publication: 19.01.1994 Bulletin 1994/03 (21) Application number: 92907332.0 (22) Date of filing: 24.03.1992

(51) International Patent Classification (IPC):  D03D 1/ 00( . ) D21F 7/ 08( . ) D21F 1/ 00( . ) (86) International application number: PCT/GB1992/000541 (87) International publication number: WO 1992/017643 (15.10.1992 Gazette 1992/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 05.04.1991 GB 19910007166 (71) Applicant: SCAPA GROUP PLC Blackburn, Lancashire BB2 6AY (GB)	(72) Inventors: BUCHANAN, Robert David Raleigh, NC 27613 (US) JEFFERY, John Blackburn, Lancashire BB1 8RJ (GB) SAYERS, Ian Christison Preston, Lancashire (GB) (74) Representative: Goodwin, Mark  Wilson, Gunn, M'Caw & Co., 41-51 Royal Exchange, Cross Street Manchester M2 7BD Manchester M2 7BD (GB)