(19)

(11)

EP 1 112 157 A1

(12)

(43) Date of publication: 04.07.2001 Bulletin 2001/27 (21) Application number: 99941890.8 (22) Date of filing: 07.09.1999

(51) International Patent Classification (IPC)7: B29C 44/50 (86) International application number: PCT/NL9900/552 (87) International publication number: WO 0015/405 (23.03.2000 Gazette 2000/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 10.09.1998 NL 1010057 (71) Applicant: WAVIN B.V. 8011 CW Zwolle (NL)	(72) Inventors: OVEREIJNDER, Hans NL-7771 EH Hardenberg (NL) KOOPMANS, Stephan, Henricus, Maria NL-3844 ZK Harderwijk (NL) (74) Representative: Iemenschot, Johannes Andreas, Ir.  van Exter Polak & Charlouis B.V.,P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)