| 摘要 |
<p>PURPOSE: To obtain the subject fiber having excellent separability and opening ability, bulkiness, repulsive elasticity, recoverability, heat retaining property and drapability, etc., and useful for wadding, etc., by making its cross section shape to a specific about pentagon shape having a protrusion part at each apex and a hollow part in the central part. CONSTITUTION: A cross section shape of a synthetic fiber is made to about pentagon shape and a protrusion part is placed at each apex (a ratio of height H to PW: H/W is 0.6-1.0) and a hollow part is arranged in the central part. The maximum side part S1 has 10-30μm radius of curvature and bends to inside of the fiber, and cooling air is blown to the bending point to increase latent crimpability.</p> |
