| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning pack capable of reducing abnormal retention, polymer deterioration, end breakage caused by the deterioration and occurrence of unevenness of yarn qualities. SOLUTION: A polymer inflow block 2, a current plate 4 provided with plural straightening hole 10 and a spinneret 5 equipped with plural spinning holes 11 are arranged one by one in the flow direction of the polymer. The straightening holes 10 and the spinning holes 11 are installed so as to draw a concentric circle. The current plate 4 has at least one line of the straightening holes 10 in a zone of >=0.7R from the center of the spinneret 5 when the distance between the center of the spinneret 5 and the center of the spinning hole 11 positioned most separated from the center of the spinneret. When the hole diameter of the straightening holes is D, the hole length is L, the total of D4/L value of the straightening holes 10 positioned in a zone of >=0.7% from the center of the spinneret 5 is 1.5 to 4 times as much as the total of D4/L value of the straightening holes 10 positioned in a zone of <0.7R from the center of the spinneret 5 to give the objective spinning pack.
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