(19)

(11)

EP 0 802 853 A1

(12)

(43) Date of publication: 29.10.1997 Bulletin 1997/44 (21) Application number: 96900950.0 (22) Date of filing: 12.01.1996

(51) International Patent Classification (IPC):  B29C 33/ 48( . ) B29D 23/ 00( . ) (86) International application number: PCT/EP1996/000130 (87) International publication number: WO 1996/021552 (18.07.1996 Gazette 1996/33)

(84) Designated Contracting States: DE DK ES FR GB IE PT (30) Priority: 12.01.1995 GB 19950000556 (71) Applicant: UPONOR LIMITED Blackwell, Nr. Alfreton, Derbyshire DE55 5JD (GB)	(72) Inventor: STREET, Ronald, Arthur Belper, Derby DE56 4BT (GB) (74) Representative: Lunt, Mark George Francis, et al  Dibb Lupton Alsop Fountain Precinct Balm Green Sheffield S1 1RZ Sheffield S1 1RZ (GB)