| abstract |
There is provided a core-sheath bicomponent polyester monofilament, wherein a core component is composed of polyethylene terephthalate (PET) and a sheath component composed of PET having an intrinsic viscosity (IV) at least 0.2 lower than that of the core component, the polyester monofilament having a fineness of 3 to 8 dtex, a strength of 7.5 cN/dtex or more, a toughness (strength x elongation 0.5 ) of 29 or more, and a longitudinal yarn fineness variation of 1.5% or less. |