| abstract |
(57) [Summary] [Object] To provide a polyester fiber having flame retardancy and high toughness, which is suitable for industrial material applications such as curing mesh, safety net, and sheet belt. [Constitution] 2000 pp of phosphorus compound as phosphorus element amount A polyester fiber containing 0.01 to 5.0% by weight of solid fine particles having an average particle size of 1 to 100 mμm and a strength of 5 g / denier or more and an elongation of 30. % Or more and toughness of 240 or more, a flame-retardant polyester fiber. |