EXTRUDED BIAXIALLY STRETCHED FOAM PLASTIC PIPE AND PROCEDURE FOR THE MANUFACTURE THEREOF - Patent 0434755

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EP 0 434 755 A1

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(43)	Date of publication:
	03.07.1991 Bulletin 1991/27

(21)	Application number: 89911111.0

(22)	Date of filing: 13.09.1989

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International Patent Classification (IPC):

B29C 44/ 50^{( . )}
B29C 47/ 02^{( . )}
B29D 23/ 00^{( . )}

B29C 47/ 00^{( . )}
B29C 55/ 26^{( . )}
F16L 9/ 127^{( . )}

(86)	International application number:
	PCT/NL1989/000068

(87)	International publication number:
	WO 1990/002649 (22.03.1990 Gazette 1990/07)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

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Priority:

16.09.1988 NL 19880002304

(71)	Applicant: WAVIN B.V.
	NL-8031 EM Zwolle (NL)

(72)	Inventor:
	LOMAN, Henricus, Gerardus, Maria NL-7602 JJ Almelo (NL)

(74)	Representative: Barendregt, Frank, Drs., et al
	van Exter Polak & Charlouis B.V., P.O. Box 3241 NL-2280 GE Rijswijk NL-2280 GE Rijswijk (NL)

(54)	EXTRUDED BIAXIALLY STRETCHED FOAM PLASTIC PIPE AND PROCEDURE FOR THE MANUFACTURE THEREOF