Patent ID: 9539789
Date: 2017-01-10
CPC Classifications: B29C,B32B,D04H,D10B,Y10T

Claim:
1. A three-dimensional fiber-reinforced composite comprising: a laminate including fiber bundle layers that are layered in a lamination direction, wherein the fiber bundle layers include a first outermost layer and a second outermost layer; a matrix resin with which the laminate is impregnated; a retention yarn extending along a surface of the first outermost layer; and a binding yarn that binds the fiber bundle layers in the lamination direction, wherein the binding yarn includes: the surface yarn sections include a bifurcated section that extends in opposite directions from the primary traverse yarn section and the secondary traverse yarn section on the surface of the second outermost layer, and the matrix resin is located in each of a first cavity surrounded by the bifurcated section and fiber bundles of the second outermost layer that are adjacent to the bifurcated section, a second cavity between each of the primary and secondary traverse yarn sections and fiber bundles that are adjacent to the primary and secondary traverse yarn sections, and a third cavity between the primary traverse yarn section and the secondary traverse yarn section, and an additive is located only in the first, second and third cavities.