Highly shrinkable acrylic fiber, pile composition containing the fiber, and napped fabric using the pile composition

摘要

It is composed of an acrylonitrile-based polymer containing 50% by weight or more of acrylonitrile, has a shrinkage ratio of 25% to 35% after treatment for 10 minutes at 130 ° C. under no load in dry heat, and within a range of 120 to 140 ° C. in dry heat. A highly shrinkable acrylic fiber in which the difference between the maximum value and the minimum value of the shrinkage rate after treatment for 10 minutes under no load is within 8% is disclosed. A pile composition containing 20 to 80% by weight of the highly shrinkable acrylic fiber can be used, and a napped fabric can be formed using the pile composition.