| 摘要 |
A unidirectional reinforcing fiber composite substrate comprising a substrate sheet made of reinforcing fibers aligned in one direction and a mesh-like body made of inorganic or organic fibers or their combination having a tackifier adhering thereto in an amount of 0.3 to 1.5 g/m2in terms of solid content, wherein the mesh-like body is adherently fixed to both surfaces of the substrate sheet in the fiber portions thereof. When a unidirectionally aligned reinforcing fiber sheet made of such a unidirectional reinforcing fiber composite substrate is used as a reinforcing material, the reinforcing fibers aligned in one direction do not come loose, thereby improving impregnability of a resin and increasing the reinforcing effect of the reinforcing fibers aligned in one direction, and the fibers do not fluff during handling and can improve a work efficiency.
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