Abstract: In order to obtain a three-dimensional fabric in double-cone structure, the paper designed a 2.5D normally reinforced structure with closed top, which is formed by enlarging or tapering the cross section of both the inner and outer layers of the fabric and connecting the two layers with float yarn. The bottom crosssection of the cones can be either round- or diamond-shaped. The cone-shape structure can be woven either from bottom to top by reducing the number of warp on both sides, or from top to bottom by increasing the number of warp on both sides. When weaving from top to bottom, a special warping method was adopted, i.e.a yarn turned back from the breast beam and it was used as warp for both outer and inner layers of the fabric and drawn-in different heddle frames for closing the top.

Key words: 2.5D normal reinforcement; double-cone; bottom-to-top weaving; top-to-bottom weaving