| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical member which can be released from a mold without grinding the surface of a mandrel and does not need another preparatory process, and to provide its manufacturing method. SOLUTION: A mold releasing sheet 2 is wound around the outer periphery 3a of the approximately cylindrical mandrel 3, and joints at ends of the sheet 2 are fixed by a tape or the like, thereby covering the outer periphery 3a of the mandrel 3 with the mold releasing sheet 2. A resin-impregnated fiber is further wound around the outer periphery of the sheet 2 covering the outer periphery 3a of the mandrel 3 while rotating the mandrel 3, forming a cylindrical fiber layer. After the resin of the fiber layer is hardened by heating the mandrel 3 in a heating furnace, the fiber layer is released from the mandrel 3 while sliding it. COPYRIGHT: (C)2004,JPO |
