| 摘要 |
PURPOSE:To continuously produce the subject wire having remarkably excellent tensile strength at high temperature and long length by heat-treating a resin- impregnated carbon fiber bundle while squeezing the outer circumference of the bundle with a braid produced by a specific method. CONSTITUTION:A carbon fiber bundle 2 is passed through a resin liquid 3 to impregnate the resin into the fiber bundle. A braid composed of a combination of plural yarns is successively formed on the moving resin-impregnated carbon fiber bundle using said bundle as a core and, at the same time, the circumference of the fiber bundle is squeezed with said braid. The carbon fiber bundle 5 squeezed with the braid is heat-treated with a furnace 6, etc., under a tension applied to the fiber bundle and the braid. The objective wire 8 having linear form is produced by the above process. The carbon fiber used as a raw material preferably has a tensile strength of 100-500kg/mm<2> at a high temperature (1000-3000 deg.C). |
