| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tube-like unit in which release or damage scarcely occurs between fibers or between layers even if an impact is applied with excellent specific strength and specific rigidity. SOLUTION: In a tube-like unit in which a prepreg of a reinforcing fiber impregnated with a synthetic resin is wound, prepregs 3, 5, 6 in which synthetic resin impregnating amounts of an oblique fiber body layer in which a fiber direction is oriented in an oblique direction and an axial lengthwise fiber body layer in which a fiber direction is oriented in an axis lengthwise direction are set to substantially 10 to less than 25wt.% are wound, and a thin layer 4 having much synthetic resin impregnating amount is formed between the oblique body layer and the axial lengthwise body layer.</p> |
