| 摘要 |
<p>This invention provides an acrylic synthetic fiber which is large in fineness, lightweight, soft, and good in hair handling, and has matte effect. The acrylic synthetic fiber is a hollow acrylic synthetic fiber that has a major axis/minor axis of not less than 3 in fiber section, has a hollow part and has a single fiber light transmittance (580 to 600 nm) of not more than 70%. Further, the hollow acrylic synthetic fiber is also preferably one prepared by spinning-twisting a spinning stock liquid comprising an acrylonitrile copolymer through a spinneret having three or more ranged holes of at least one shape selected from circle, ellipse, and rhombus into a coagulating bath, drying the fiber at a low temperature and further heat treating the fiber at 120 to 180°C.</p> |
