(19)
(11) EP 0 897 501 A1

(12)

(43) Date of publication:
24.02.1999 Bulletin 1999/08

(21) Application number: 97919423.0

(22) Date of filing: 29.04.1997
(51) International Patent Classification (IPC): 
B29C 70/ 06( . )
B29C 47/ 24( . )
F16L 9/ 12( . )
B29K 23/ 00( . )
B29L 23/ 00( . )
 B29C 47/ 06( . )
B29C 47/ 52( . )
F16L 11/ 04( . )
B29K 105/ 14( . )
(86) International application number:
PCT/FI1997/000255
(87) International publication number:
WO 1997/041376 (06.11.1997 Gazette 1997/47)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI MC NL PT SE

(30) Priority: 30.04.1996 FI 19960001834

(71) Applicant: BOREALIS POLYMERS OY
06101 Porvoo (FI)

(72) Inventors:
  • LINDSTRÖM, Helge
    FIN-06650 Hamari (FI)
  • NYMARK, Anders, E.
    FIN-06100 Porvoo (FI)
  • HEIKKILÄ, Pekka
    B-1970 Wezembeek-Oppem (BE)
  • EK, Carl-Gustaf
    S-444 86 Stenungsund (SE)

(74) Representative: Miettinen, Teuvo Seppo Aukusti, et al 
FORSSEN & SALOMAA OY, Yrjönkatu 30
00100 Helsinki
00100 Helsinki (FI)

   


(54) PRESSURE TUBE OF A PLASTIC MATERIAL