| 摘要 |
<p>A spontaneously degradable fiber excellent in bulkiness, softness, stretchability and feeling, which comprises a lowly heat-shrinkable fiber component (A) made of a highly crystalline aliphatic polyester and a highly heat-shrinkable fiber component (B) made of an aliphatic polyester (such as lowly crystalline or non-crystalline aliphatic polyester, a block copolymer or mixture comprising aliphatic polyester as the main component and being composed of a high-melting component and a low-melting component, or the like). Further, fibers excellent in self-crimpability or self-bondability or separable fibers can be obtained by combining the fiber components (A) and (B) suitably to form a composite fiber or yarn.</p> |
