Abstract: A fluid-impermeable composite hose has a wall including a laminated layer formed by longitudinally lapping a laminated sheet which contains a metallic foil, or a metallic layer formed by vapor deposition. The laminated layer is bound with thread wound about it at a density not exceeding 20%, and bound to an extent forming constrictions therein if required. The thread prevents the deformation in cross section of the hose and the separation of the overlapping edge portions of the laminated sheet which might otherwise be caused by the bending resistance of the laminated sheet. The constrictions improve the flexibility of the hose.

Abstract: A hose for transporting a refrigerant for an electrically driven compressor has an inner layer of rubber having high resistance to an ester oil, and a laminated layer including a metallic foil, or a metallic layer formed by vapor deposition. It exhibits high degrees of electric insulation, refrigerant resistance, waterproofness and vibration resistance, and is suitable for use with an electrically driven compressor in an automobile air conditioner.

Abstract: A hose for conveying a refrigerant to an electrically driven compressor in an automobile air conditioner has a wall formed by at least an innermost thin resin layer and a laminated layer including a metallic foil or a metallic layer formed by vapor deposition. It is excellent in electric insulation, refrigerant resistance, waterproofness and vibration resistance.

Abstract: A fluid-impermeable composite hose having a metallic foil in its wall includes as one of a plurality of layers forming its wall a laminated layer formed by laminating the metallic foil, a reinforcing material having a high stretch resistance and a resin film. The laminated layer protects the foil from being broken when the hose is deformed or stretched.