(19)

(11)

EP 0 370 043 A1

(12)

(43) Date of publication: 30.05.1990 Bulletin 1990/22 (21) Application number: 88906185.0 (22) Date of filing: 22.06.1988

(51) International Patent Classification (IPC):  E04B( . ) E04C 2/ 08( . ) E04B 1/ 00( . ) (86) International application number: PCT/SE1988/000344 (87) International publication number: WO 1989/000221 (12.01.1989 Gazette 1989/02)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.07.1987 SE 19870002776 (71) Applicant: NORDISKA BALCO AB S-351 06 Växjö (SE)	(72) Inventors: BJÖRKMAN, Lars S-352 41 Växjö (SE) WERNER, Rudolf S-360 44 Ingelstad (SE) (74) Representative: Andersson, Per-Olof, et al  AWAPATENT AB, Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)