To obtain the subject filament yarn capable of preventing clogging of reeds and abrasion of the reeds, caused by a sizing agent dropped when weaving the yarn, and providing a woven fabric having good appearance quality by regulating the viscosity of an oiling agent added with water, attached to a polyester-base filament yarn so as to be lower than a prescribed value, and further regulating the amount of the oiling agent attached thereto so as to be lower than a prescribed value.
This polyester-based filament yarn used as a warp in weaving by a water-jet loom has ≤0.5 Pa.s maximum value of viscosities of an oiling agent added with water, attached to a polyester-based filament yarn, and further ≤1.3/D1/2 wt.% amount of the oiling agent attached thereto [D (dtex) is the size of single filament of the filament yarn].
MUNAKATA NORIAKI
MORISHITA YOSHINORI
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