| 摘要 |
PROBLEM TO BE SOLVED: To prepare a prepreg sheet exhibiting high peelability of a releasing paper, etc., and having sufficient impregnation property and tackiness to concrete, etc. SOLUTION: Reinforcing fiber bundles are arranged in one direction, heat- weldable fibers are arranged perpendicular to the reinforcing fiber bundles interposing 5-150mm gaps between the weldable fibers along the longitudinal direction of the reinforcing fiber bundles and the fibers are welded to obtain a reinforcing fiber sheet. The sheet is impregnated with a resin composition exhibiting liquid state at normal temperature. |
