(19)
(11)
EP 0 537 192 A1
(12)
(43)
Date of publication:
21.04.1993
Bulletin 1993/16
(21)
Application number:
91911007.0
(22)
Date of filing:
20.06.1991
(51)
International Patent Classification (IPC):
B29C
33/
38
( . )
B29C
51/
10
( . )
B29C
43/
12
( . )
B29C
33/
56
( . )
B29C
51/
28
( . )
B29L
31/
58
( . )
(86)
International application number:
PCT/FI1991/000193
(87)
International publication number:
WO 1992/000176
(
09.01.1992
Gazette 1992/02)
(84)
Designated Contracting States:
AT BE CH DE FR GB IT LI NL SE
(30)
Priority:
02.07.1990
FI 19900003324
(71)
Applicant:
A. AHLSTROM CORPORATION
FIN-29600 Noormarkku (FI)
(72)
Inventors:
LAINE, Eino
SF-48700 Kyminlinna (FI)
RÖKMAN, Kay
SF-48600 Karhula (FI)
(74)
Representative:
Füchsle, Klaus, Dipl.-Ing., et al
Hoffmann, Eitle & Partner, Patentanwälte, Postfach 81 04 20
D-81904 München
D-81904 München (DE)
(54)
METHOD OF FORMING THERMOPLASTIC MATERIALS