| 摘要 |
The present invention ensures that an elastic core fiber is caught to prevent production of a core yarn having no elastic core fiber. In a method for producing a core yarn by supplying a sliver S to a drafting device 3 in a predetermined amount and merging a core fiber D with the sliver S, the sliver S is supplied to the drafting device 3 in an amount greater than the predetermined amount over a predetermined period of time after spinning is started, so as to merge with the core fiber D, and thereafter, the sliver S is supplied to the drafting device 3 in the predetermined amount. Preferably, the amount of sliver S that is supplied to the drafting device 3 is changed in accordance with the rotational speed of predetermined draft rollers in the drafting device 3. |
