METHOD OF FORMING VARIABLE CROSS-SECTIONAL SHAPED THREE-DIMENSIONAL FABRICS

摘要

Method of weaving a variable cross-sectional shaped three-dimensional fabric which utilizes different weft yarn insertion from at least one side of the warp layers (X) for selectively inserting weft yarns (Y1,Y2) into different portions of the fabric cross-sectional profile defined by the warp yarn layers (X) during the weaving process. If inserted from both sides of the warp layers (X), the weft yarns (Y1,Y2) may be inserted simultaneously or alternatively from each side of the warp yarn layers (X). The vertical yarn (Z) is then inserted into the fabric by reciprocation of a plurality of harnesses (11a,11b,12a,12b) which separate the vertical yarn (Z) into a plurality of vertical yarn systems as required by the shape of the three-dimensional fabric being formed. The invention provides a method of forming three-dimensional woven fabrics of varying cross-sectional shapes for use as composite materials or the like.