LOW-PERMEATION FLEXIBLE FUEL HOSE

A flexible hose having a non-fluorinated rubber inner tube, a non-fluorinated rubber outer cover, an intermediate barrier layer consisting essentially of ethylene- vinyl alcohol copolymer (EVOH) having an ethylene content less than 30 mole %, and preferably a textile reinforcement between said barri...

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Bibliographische Detailangaben
Hauptverfasser:	STRIPE, DANA, S, TUCKER, HAL, MILLER, LANCE, D
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CHEMISTRY COMPOSITIONS BASED THEREON ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL PROCESSES OF COMPOUNDING HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A flexible hose having a non-fluorinated rubber inner tube, a non-fluorinated rubber outer cover, an intermediate barrier layer consisting essentially of ethylene- vinyl alcohol copolymer (EVOH) having an ethylene content less than 30 mole %, and preferably a textile reinforcement between said barrier layer and said outer cover. A non-fluorinated rubber tie layer may be included between the barrier and the reinforcement. Permeability to ethanol- and methanol-containing fuels is very low. L'invention porte sur un tuyau souple ayant un tube interne en caoutchouc non fluoré, un revêtement externe en caoutchouc non fluoré, une couche barrière intermédiaire consistant essentiellement en copolymère d'éthylène-alcool vinylique (EVOH) ayant une teneur en éthylène inférieure 30 % en mole, et de préférence un renfort textile entre ladite couche barrière et ledit recouvrement externe. Une couche d'attache en caoutchouc non fluoré peut être incluse entre la barrière et le renfort. La perméabilité aux carburants contenant de l'éthanol et du méthanol est très faible.