| 摘要 |
PROBLEM TO BE SOLVED: To prepare a reinforcing fiber sheet, hardly causing the seam slippage in the sheet, having a high toughness in the orienting direction of fibers and large interstices among the fibers and good in permeability to an adhesive. SOLUTION: This reinforcing fiber sheet is obtained by arranging covering auxiliary fibers 3 and 4 crossing respective riblike fiber groups in the longitudinal direction of the riblike fiber groups in at least one surface of the fiber sheet and binding the covering auxiliary fibers 3 and 4 between ridges 5 of the mutually adjacent fiber groups in a warp knitted textile design with binding auxiliary fibers 6 in the reinforcing fiber sheet comprising each fiber group, containing reinforcing fibers 1 or 2 arranged side by side as one unit and further arranged in the riblike shape with an interval kept therebetween. |
