PURPOSE: To obtain three-dimensional woven fabric having a small amount of deformation in the slant direction as aggregate for composite material comprising a bias layer which is composed of plural pairs and has a pair with a different inclination angle among the plural pairs besides a warp layer, a weft layer and a vertical yarn layer.
CONSTITUTION: A warp layer wherein plural warps are arranged in parallel along the longer direction of woven fabric and plural pairs of a bias yarn layer of a pair of two layers wherein plural bias yarns are mutually symmetrically slanted and laid in a plane parallel to the warp layer and at least one pair of a bias yarn layer has an inclination angle different from that of other pairs. Further vertical yarns are inserted into the warp layer in the thickness direction of the woven fabric in such a way that the vertical yarns are perpendicular to the lines and both the ends of the warp layer and wefts are inserted in the width direction of the woven fabric to form three-dimensional woven fabric having excellent isotropy in plane.
YASUI YOSHIHARU
OMORI HIROSHI
