The effects of spinneret hole shape, characteristic dimension of spinneret ,hole arrangement and cool conditions on degree of profile were discussed.

• 异形喷丝孔的当量直径、截面积、孔长等特征尺寸决定了熔体在喷丝孔中的流变行为，建议采用当量异形度作为纤维的异形度指标。