Patent ID: 6010652
Filing Date: 2000-01-04
Classification: D03D

Abstract:
A method of producing three-dimensional woven fabric structural materials, comprising the steps of:integrally weaving at least three woven fabric plies by a multi-ply weave in a form presenting an expanded shape extending in two directions, said form presenting a front surface and a rear surface a distance between which defines a thickness, said at least three woven fabric plies being substantially parallel with one another and shifted from one another in a weaving direction so as to extend obliquely back and forth between said front and rear surfaces, a plurality of bound portions being formed each by a crossing locus of any two of said at least three fabric plies, whereby at least two rows of cylindrical bag portions are thus formed and adjacent with each other in a direction of said thickness and connected to one another through said bound portions, said cylindrical bag portions each longitudinally extending in a direction crosswise said weaving direction and said at least three rows each extending in said weaving direction, given ones of said cylindrical bag in adjacent rows being formed in staggered positions;folding said cylindrical bag portions into a juxtaposed state in said weaving direction;pressing said cylindrical bag portions in said weaving direction; andheat-setting said cylindrical bag portions to form creases in a position substantially midway between said bound portions in said at least three woven fabric plies on said face and back sides.