EP 1252368 A1 20021030 - CORROSION RESISTANT METAL TUBE AND PROCESS FOR MAKING THE SAME
Title (en)
CORROSION RESISTANT METAL TUBE AND PROCESS FOR MAKING THE SAME
Title (de)
KORROSIONSBESTÄNDIGES METALLROHR UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TUBE METALLIQUE RESISTANT A LA CORROSION ET PROCEDE DE FABRICATION CORRESPONDANT
Publication
Application
Priority
US 0001292 W 20000119
Abstract (en)
[origin: WO0153566A1] A corrosion resistant multi-layer tube (10) comprises a metal tube (12); a zinc layer (14) bonded to the metal tube outer surface (13); a surface treatment layer (16) bonded to the zinc layer (14); a priming layer (17); a first polymeric layer (18) bonded to the priming layer; a second polymeric layer (22) bonded to the first polymeric layer (18). A process for manufacturing the tube comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating, a sealant coating on top of the zinc based coating, and a primer coating on top of the sealant coating. The primer coating (17) is preferably applied by an airless spray system in a closed atmosphere, wherein substantially no volatile organic compounds escape into the atmosphere. The polymeric layer(s) remain adhered to the metal tube, even when exposed for prolonged periods to aggressively corrosive environments.
IPC 1-7
IPC 8 full level
F16L 9/14 (2006.01); B05D 1/36 (2006.01); B05D 7/14 (2006.01); B29C 65/70 (2006.01); B32B 1/08 (2006.01); C23C 22/07 (2006.01); C23C 22/24 (2006.01); C23C 28/00 (2006.01); F16L 58/08 (2006.01); F16L 58/10 (2006.01); B29K 21/00 (2006.01); B29L 9/00 (2006.01); B29L 23/00 (2006.01)
CPC (source: EP)
C23C 28/00 (2013.01); C23C 28/3225 (2013.01); C23C 28/345 (2013.01); F16L 58/08 (2013.01); F16L 58/10 (2013.01); F16L 58/109 (2013.01)
Citation (search report)
See references of WO 0153566A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0153566 A1 20010726; AU 2968400 A 20010731; EP 1252368 A1 20021030; JP 2003521581 A 20030715
DOCDB simple family (application)
US 0001292 W 20000119; AU 2968400 A 20000119; EP 00908310 A 20000119; JP 2001553423 A 20000119