(19)

(11)

EP 0 521 905 A1

(12)

(43) Date of publication: 13.01.1993 Bulletin 1993/02 (21) Application number: 91905949.0 (22) Date of filing: 22.03.1991

(51) International Patent Classification (IPC):  D04H 1/ 14( . ) D04H 1/ 74( . ) D04H 1/ 736( . ) (86) International application number: PCT/FI1991/000078 (87) International publication number: WO 1991/014816 (03.10.1991 Gazette 1991/23)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 26.03.1990 FI 19900001486 (71) Applicant: PAROC OY AB SF-21600 Pargas (FI)	(72) Inventors: LAUREN, Henning SF-21600 Pargas (FI) UNKURI, Matti SF-21600 Pargas (FI) (74) Representative: Barlow, Roy James  J.A. KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)