(19)

(11)

EP 0 521 058 A1

(12)

(43) Date of publication: 07.01.1993 Bulletin 1993/01 (21) Application number: 91906503.0 (22) Date of filing: 19.03.1991

(51) International Patent Classification (IPC):  E04B 1/ 76( . ) E04D 13/ 16( . ) (86) International application number: PCT/DK1991/000085 (87) International publication number: WO 1991/014897 (03.10.1991 Gazette 1991/23)

(84) Designated Contracting States: AT BE DE DK FR GB LU NL SE (30) Priority: 19.03.1990 DK 19900000706 (71) Applicant: Rockwool International A/S DK-2640 Hedehusene (DK)	(72) Inventor: PETERSEN, Jorgen, Skjold DK-4000 Roskilde (DK) (74) Representative: Kyed, Iver, et al  c/o LEHMANN & REE A/S Grundtvigsvej 37 DK-1864 Frederiksberg C DK-1864 Frederiksberg C (DK)