F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 9/133 (2006.01) B29C 53/30 (2006.01) B29D 23/18 (2006.01) B32B 1/08 (2006.01) F16L 11/11 (2006.01)
Patent
CA 2216970
The invention relates to a method for manufacturing a multi-layer corrugated pipe and to a corrugated pipe manufactured by the method and comprising an inner tube (2), a corrugated outer tube (5) and a plastic layer therebetween. Separate layers (3, 6) of plastic are formed on the outer surface of the inner tube (2) and the inner surface of the outer tube (5), said separate layers of plastic being affixed to one another at least at the web portions (5a) of the corrugations of the outer tube (5) when the inner tube and outer tube are connected.
L'invention concerne un procédé pour fabriquer une conduite ondulée à couches multiples et une conduite ondulée fabriquée suivant ce procédé et comprenant un tube interne (2), un tube ondulé externe (5) et une couche plastique entre les deux. Des couches séparées (3, 6) en plastique sont formées sur la surface externe du tube interne (2) et la surface interne du tube externe (5), ces couches séparées en plastique étant fixées ensemble au moins au niveau des parties jointives (5a) des ondulations du tube externe (5) quand le tube interne et le tube externe sont réunis.
Agren Lennart
Jarvenkyla Jyri
Olsson Bjorn
Scharwachter Dieter
Cassan Maclean
Uponor B.v.
Uponor Innovation Ab
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