| 摘要 |
PROBLEM TO BE SOLVED: To provide carbon fiber superior in dispersiveness and high speed loosening-extending performance, a package optimal for such carbon fiber, and a fiber reinforced composite material having a superior quality and a grade. SOLUTION: In this carbon fiber package with yarn wound on an internal loosening-extending bobbin, the loop spreading ratio x% satisfies an expression 1 : 100<x<150. The loop spreading ratio x% and a crest angle w°of the package innermost layer also satisfy an expression 2 : 300<xw<3000. COPYRIGHT: (C)2006,JPO&NCIPI
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