To equalize thread quality, to increase a winding density and to reduce the hardness difference between the center and end face even at a high twill angle by setting the winding density of a yarn package to specific g/cm3 or above, setting the trill angle to a specific angle or above, and setting a bulge factor to specific % or below.

The winding density of a yarn package is set to 0.69 g/cm3 or above to prevent an increase of the occurrence rate of a layer drift and an increase of the occurrence rate of claims caused by shocks at the time of transportation. The twill angle is set to 5.5° or above to prevent the bulging of a drum end face and a defective wound shape. The bulge factor is set to 8.0% or below to prevent the occurrence of an unraveling tension abnormality caused by the drift or ring slip off of a yarn. A high and satisfactory winding density is obtained, and the hardness difference between the center and end face can be reduced. A knit/woven product having a high unraveling property, little tension fluctuation and high quality can be obtained.