| 摘要 |
PURPOSE: To obtain a homogeneously needled three-dimensional structure excellent in heat resistance and suitable for high-performance brake elements, rocket motor parts, etc., by superimposing intermediate textile elements subjected to napping and successively needling the superimposed elements. CONSTITUTION: Warp yarns 12 and weft yarns 13 each comprising multifilament yarns such as polyacrylonitrile are woven into fabric 11 and the surface of the fabric 11 is subjected to raising operation so as to create a nap 14 to provide intermediate textile elements. The intermediate textile elements are superimposed and laminated and subjected to needling treatment so that the depth of needling is changed so as to become successively shallow to provide the objective structure. |
