| 摘要 |
PROBLEM TO BE SOLVED: To provide a prepreg substrate material having good flowability and following property to a complex form, and exhibiting an excellent dynamic property, a low unevenness of the same and an excellent dimensional stability on making it as a fiber-reinforced plastic, and a laminated substrate material of the prepreg substrate material. SOLUTION: This prepreg substrate material constituted with carbon fibers drawn/arranged in one direction and a thermosetting resin, and closely bonded with a tape-formed supporting body is characterized in that a multiple number of rows consisting of notches having 2-50 mm length W are installed in the crossing direction to the fibers over the whole surface of the prepreg substrate material, the interval of the row and the first row overlapping on moving the row in parallel in the longitudinal direction of the fiber is 10 to 100 mm, each of the adjacent rows are shifted in the direction crossing with the fibers at right angle and also the notches of the adjacent rows are cutting-in with each other. COPYRIGHT: (C)2007,JPO&INPIT
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