(19)

(11)

EP 0 680 252 A1

(12)

(43) Date of publication: 08.11.1995 Bulletin 1995/45 (21) Application number: 94904782.0 (22) Date of filing: 14.01.1994

(51) International Patent Classification (IPC):  A01G 31/ 00( . ) (86) International application number: PCT/NL1994/000010 (87) International publication number: WO 1994/016549 (04.08.1994 Gazette 1994/18)

(84) Designated Contracting States: BE ES FR IT NL (30) Priority: 22.01.1993 NL 19930000128 (71) Applicant: Rockwool/ Grodan B.V. NL-6074 NH Melick-Herkenbosch (NL)	(72) Inventors: DE RUIJTER, Johannes Franciscus Hendricus NL-4854 CV Bavel (NL) KNOP, Albert-Willem NL-6075 AW Herkenbosch (NL) (74) Representative: Prins, Hendrik Willem, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 NL-2517 GK Den Haag NL-2517 GK Den Haag (NL)