The nonwoven fabrics which contain the fiber where the acrylonitrile type polymer and the cellulose type polymer are mixed uniformly.

摘要

PPROBLEM TO BE SOLVED: To provide a fiber formed of a uniform mixture of an acrylonitrile-based polymer and a cellulosic polymer, which is split and fibrillated even with low energy to have a high specific surface area, and which thereby has high liquid-absorbing capacity and solvent resistance, and to provide a nonwoven fabric containing the fibers. PSOLUTION: A fiber comprises: 40 to 85 mass% of an acrylonitrile-based polymer containing 50 mass% or more of acrylonitrile; and 60 to 15 mass% of a cellulosic polymer. The fiber has an apparent fiber fineness ratio of 1.5 to 3.0 and is formed of a uniform mixture of the acrylonitrile-based polymer and the cellulosic polymer. Since the fiber is split and fibrillated even with low energy to have a high specific surface area, the fiber is suitable for use in a nonwoven fabric. The nonwoven fabric using the fibers is excellent in high liquid-absorbing capacity and solvent resistance. PCOPYRIGHT: (C)2012,JPO&INPIT