Patent ID: 7674510
Filing Date: 2010-03-09
Classification: B32B,B60R,D03D,D10B,F16F,Y10T

Abstract:
1. A composite material comprising: a first fiber fabric; a second fiber fabric having a mirror symmetric relation to the first fiber fabric and being overlapped to the first fiber fabric in a mirror symmetric manner; and a resin reinforced by the first and second fiber fabrics, wherein each of the first and second fiber fabrics comprising: a first fiber layer formed of a plurality of first fiber bundles having a mutually aligned length direction; a second fiber layer formed of a plurality of second fiber bundles having a mutually aligned length direction, the length direction of the second fiber bundles diagonally intersecting the first fiber bundles; a retaining thread group formed of a plurality of retaining threads having a mutually aligned length direction; and a constraint thread group formed of a plurality of constraint threads having a mutually aligned length direction, the length direction of the constraint threads intersecting the retaining threads, wherein the first fiber layer is laminated adjacent to the second fiber layer, and the retaining thread group and the constraint thread group form a woven texture so as to hold the first fiber layer and the second fiber layer together, and wherein the length direction of the retaining thread group is aligned with the length direction of the second fiber bundles and the length direction of the constraint thread group is aligned with the length direction of the first fiber bundles such that the number of fiber directions including the directions of the retaining and constraint thread groups in the first or second fiber fabric is only two.