METHOD AND APPARATUS FOR MAKING PLASTIC PIPE WITHOUT MECHANICAL PRESSURE ON INNER PIPE WALL - Patent 0927099

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EP 0 927 099 A1

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(43)	Date of publication:
	07.07.1999 Bulletin 1999/27

(21)	Application number: 97921550.0

(22)	Date of filing: 20.05.1997

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International Patent Classification (IPC):

B29C 47/ 06^{( . )}
B29D 23/ 18^{( . )}

B29C 49/ 00^{( . )}

(86)	International application number:
	PCT/CA1997/000332

(87)	International publication number:
	WO 1998/052739 (26.11.1998 Gazette 1998/47)

(84)	Designated Contracting States:
	AT DE ES FR GB IT NL

(71)	Applicants:
	Lupke, Manfred Arno Alfred Thornhill Ontario L3T 1W6 (CA) Lupke, Stefan A. Thornhill, Ontario L3T 1X6 (CA)

(72)	Inventors:
	Lupke, Manfred Arno Alfred Thornhill Ontario L3T 1W6 (CA) Lupke, Stefan A. Thornhill, Ontario L3T 1X6 (CA)

(74)	Representative: Stachow, E.-W., Prof. Dr.
	Frankenforster Strasse 135-137 51427 Bergisch Gladbach 51427 Bergisch Gladbach (DE)

(54)	METHOD AND APPARATUS FOR MAKING PLASTIC PIPE WITHOUT MECHANICAL PRESSURE ON INNER PIPE WALL