| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tubular body in which the roundness of the laminated state of a pre-preg sheet is improved by limiting variation in thickness in a circumferential direction. SOLUTION: A tubular body 1 has winding layers 3, 5, (7) each comprising a wound pre-preg sheet in which a synthetic resin is impregnated in reinforcing fibers. Among the wound layers, the width of a pre-preg sheet 5a (5b) that constitutes one ply is formed and dimensioned such that ends of the sheet do not overlap each other when it is wound around, and an overlapped portion 3a (7a) of a pre-preg sheet 3 (7) adjacent to this pre-preg sheet is positioned at an gap-opening portion 6a (6b) of the pre-preg sheet where the ends of the pre-preg sheet are overlapped.</p> |
