| 摘要 |
PROBLEM TO BE SOLVED: To provide an air-spinning nozzle conforming to the speed up of its spinning speed of a thin yarn-spinning in an air-spinning device. SOLUTION: This air-spinning nozzle 5 by arranging a first nozzle N1 and second nozzle N2 at the downstream side of a draft roller is provided by setting the cross-sectional areal ratio of the inner diameter D<SB>1</SB>at the fiber-introducing passage part to the inner diameter D<SB>2</SB>of the air-jetting out part in the second nozzle as a relationship of [(D<SB>2</SB>/2)<SP>2</SP>π]/[(D<SB>1</SB>/2)<SP>2</SP>π]≥3, i. e., the ratio of the inner diameters D<SB>1</SB>to D<SB>2</SB>as D<SB>2</SB>/D<SB>1</SB>≥1.73 (provided that 0.7≤D<SB>1</SB>and D<SB>2</SB>≤2.1 (unit: mm)). COPYRIGHT: (C)2006,JPO&NCIPI
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