| abstract |
(57) [Summary]nPROBLEM TO BE SOLVED: To provide a deep color with a high content of carbon black. High-strength ultra-fine fibers Provide a fabrication method.nSOLUTION: Mixed spinning comprising a dispersion component and a dispersion medium component Average single yarn fineness obtained by extracting and removing the dispersion medium component of the yarn fiber Is 0.6 dtex or less, and the average primary particle size is 1 0-50 nm, dibutyl phthalate (DBP) oil absorption 30-600cm Three / 100g carbon black Ultrafine fiber containing 1 to 30% by weight based on the weight of the fiber And When manufacturing the ultrafine fibers, Any volume of the resin pellets that constitute the dispersion medium component Volume of master batch pellets containing Bon Black These are mixed and spun. |