| 摘要 |
PURPOSE:To mold an uncured fiber-reinforced resin layer with a light weight even at the time of requiring high temperature vulcanization and to allow it to endure for a long period by installing the layer formed outside an internal pressure holder disposed outside an inner mold in an inner space of a rubber tube, and bringing the same uncured resin layer into close contact with an inner surface of the tube by expansion pressure of the holder to be cured. CONSTITUTION:An internal pressure holder 3 is disposed inside a rubber tube 5, an inner mold 2 formed with an uncured fiber-reinforced resin layer 4 is installed, and then hydraulic pressure is operated at the holder 3. The pressure is determined to be at least 0.1MPa according to a thickness, a laminated layer structure, laminating angle of a predetermined fiber-reinforced resin tubular body and a material, a thickness of the tube 5 or preferably 0.3MPa or more when an outer mold exists. The holder 3 is expanded by an operation of the pressure thereby to bring the layer 4 into close contact with an inner surface of the tube 5. Then, the layer 4 is cured, the mold 2, the holder 3 and the mold 1 used as required are removed, thereby obtaining a fiber-reinforced resin tubular body integrated with the tube 5 on its surface. |
