| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce resin accumulation and, at the same time, improve a fiber volume content in a fiber-reinforced resin when a three-dimensional fiber structure is used as a reinforcing base material for the fiber-reinforced resin.SOLUTION: In a three-dimensional fiber structure 10, an at least biaxially oriented laminated fiber layer 12 in which fiber layers 11 are laminated is bound by a binding structure 13 including binding yarns 13a arranged in a direction orthogonal to each fiber layer 11. The laminated fiber layer 12 includes at least one fiber layer 11 including fiber bundles 21 in each of which the spreading of opened fibers composing each fiber bundle 21 is restricted by nanofibers spun by an electrospinning method.</p> |
