| abstract |
(57) [Summary] [Structure] Thermoplastic polymer A (for example, polyethylene) having a melting point or softening point of 80 ° C or higher and paraffin wax having a melting point of 15 to 50 ° C and a heat of fusion of 30 mJ / mg or more are weighed. Ratio 3 / An endothermic and exothermic conjugate fiber in which the mixture obtained by mixing 7 to 7/3 is covered with a thermoplastic polymer B having a melting point of 200 ° C or higher. [Effect] An endothermic composite fiber that absorbs heat or generates heat according to changes in body temperature and outside air temperature is provided. |