(19)

(11)

EP 1 003 694 A1

(12)

(43) Date of publication: 31.05.2000 Bulletin 2000/22 (21) Application number: 98936400.5 (22) Date of filing: 30.06.1998

(51) International Patent Classification (IPC)7: C03C 13/00, C03C 13/06 (86) International application number: PCT/EP9803/979 (87) International publication number: WO 9908/969 (25.02.1999 Gazette 1999/08)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IT LI SE Designated Extension States: LT LV RO SI (30) Priority: 18.08.1997 GB 9717486 (71) Applicant: Rockwool International A/S 2640 Hedehusene (DK)	(72) Inventors: GULDBERG, Marianne DK-2860 Soborg (DK) JENSEN, Soren, Lund DK-2840 Holte (DK) (74) Representative: Lawrence, Peter Robin Broughton  GILL JENNINGS & EVERY,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)