PURPOSE: The titled yarn having suppressed frictional resistance of surface and improved wear resistance, by carrying out conjugated spinning in such a way that polyester containing a specific ratio of organic silicone compound (e.g., dimethylpolysiloxane, etc.) is contained in the surface of yarn.
CONSTITUTION: An organic silicone compound (e.g., dimethylpolysiloxane, etc.) is added to a reaction system usually in a period from end of esterification to end of polycondensation of polyester, 0.1W30wt% silicon is added to the polyester, and conjugated spinning is carried out in such a way that the prepared polyester is contained at least part (preferably the whole) of yarn surface, to give the desired yarn. Conjugated yarn of sheath core type comprising the organic silicone compound-containing polyester as a sheath component is preferable as the conjugated yarn, and the sheath component has preferably 8W20% section of yarn.
EFFECT: Sewing thread suppressing a phenomenon called "FUJIYORI" wherein a single yarn (twisted yarn) is entangled can be provided.
SATOU YOSHIAKI
NAKAGAWA KIYOSHI
