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WO1996011354B1 - Chemically bonded multi-wall conduit - Google Patents

Chemically bonded multi-wall conduit

Info

Publication number
WO1996011354B1
WO1996011354B1 PCT/US1995/012687 US9512687W WO9611354B1 WO 1996011354 B1 WO1996011354 B1 WO 1996011354B1 US 9512687 W US9512687 W US 9512687W WO 9611354 B1 WO9611354 B1 WO 9611354B1
Authority
WO
WIPO (PCT)
Prior art keywords
polymeric material
tube
fuel
fluorocarbon
outer tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1995/012687
Other languages
French (fr)
Other versions
WO1996011354A1 (en
Filing date
Publication date
Priority claimed from US08/321,220 external-priority patent/US5653266A/en
Application filed filed Critical
Priority to AU41284/96A priority Critical patent/AU4128496A/en
Publication of WO1996011354A1 publication Critical patent/WO1996011354A1/en
Publication of WO1996011354B1 publication Critical patent/WO1996011354B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

An improved conduit (10) for transporting fuel and/or fuel vapor or a motor transmitting member in an automobile comprising an inner tube (15) comprised of fluorocarbon polymeric material and having an inner surface (25) for contacting and containing fluids or a motion transmitting member, and a chemically etched outer surface (30) having a substantial portion of the fluorine of the fluorocarbon polymer substituted by a polar moiety. The conduit further includes an outer tube (20) comprising an inner surface (35) comprised of polymeric material containing sufficient polar groups such that hydrogen bonding at the interface between the outer surface of the inner tube and the inner surface of the outer tube prevents substantial relative separation of or movement between the inner and outer tubes.

Claims

AMENDED CLAIMS
[received by the International Bureau on 14 May 19% (14.05.96); new claims 21 and 22 added; remaining claims unchanged (1 page)]
21. An improved composite fuel system conduit for transporting fuel and/or fuel vapor in an automobile comprising:
(a) a thin-walled inner tube comprising fluorocarbon polymeric material and having (i) an inner surface for contacting and containing the fuel and/or fuel vapor, said inner surface comprising a mixture of fluorocarbon polymeric material and semiconductive carbon; and (ii) a sodium/naphthalene etched outer layer, said outer layer having a thickness of no greater than about 200
Angstroms and having about 85% to about 95% of the fluorine atoms of said fluorocarbon polymer substituted by a polar moiety; and
(b) a outer tube surrounding and coaxial with said inner tube, at least the inner surface of said outer tube comprising polymeric material containing sufficient polar groups such that hydrogen bonding at the interface between the outer surface of said inner tube and the inner surface of said outer tube exhibits a highly effective associative bond between the inner tube and outer tube, said associative bond demonstrating a shear strength of at least about 150 p.s.i.
22. The improved conduit according to claim 21 wherein said fluorocarbon polymeric material comprises PTFE.
AMENDEDSHEET(ARTICLE«)
PCT/US1995/012687 1994-10-11 1995-10-11 Chemically bonded multi-wall conduit Ceased WO1996011354A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41284/96A AU4128496A (en) 1994-10-11 1995-10-11 Chemically bonded multi-wall conduit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/321,220 US5653266A (en) 1994-10-11 1994-10-11 Chemically bonded multi-wall conduit
US08/321,220 1994-10-11

Publications (2)

Publication Number Publication Date
WO1996011354A1 WO1996011354A1 (en) 1996-04-18
WO1996011354B1 true WO1996011354B1 (en) 1996-06-27

Family

ID=23249700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/012687 Ceased WO1996011354A1 (en) 1994-10-11 1995-10-11 Chemically bonded multi-wall conduit

Country Status (3)

Country Link
US (2) US5653266A (en)
AU (1) AU4128496A (en)
WO (1) WO1996011354A1 (en)

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US6263920B1 (en) * 1996-01-29 2001-07-24 Hybritech Polymers Multi-layer assembly for fluid and vapor handling and containment systems
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WO2009085997A1 (en) * 2007-12-28 2009-07-09 Saint-Gobain Performance Plastics Corporation Reinforced tube
WO2013142658A1 (en) 2012-03-22 2013-09-26 Siemens Healthcare Diagnostics Inc. Modified fluoropolymer tubing for robust fluid stream continuity and method of manufacture
EP2644210B1 (en) * 2012-03-29 2018-01-03 Biotronik AG Catheter shaft comprising welded tubes
WO2015132306A1 (en) * 2014-03-05 2015-09-11 Nupigeco S.P.A. Multilayer tube and use thereof for fluid transportation at medium pressure
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