| 摘要 |
PROBLEM TO BE SOLVED: To obtain a latent crimpable conjugate fiber excellent in bulkiness, strechability, drape property and touch feeling and useful for woven fabric, etc., by passing the component A through a spinneret in the longitudinal direction to discharge the component A, introducing the component B from the transverse direction above the position within a prescribed value from a discharge part which is common to the component A and conjugating the components A and B. SOLUTION: In carrying out conjugate spinning of a high-viscosity component A having 0.70-0.85 intrinsic viscosity and a low-viscosity component B having 0.45-0.57 intrinsic viscosity into side by side type, the component A is discharged by passing the component A through a spinneret in the longitudinal direction 1 and the component B is introduced from the transverse direction 2 above the position within 10mm from a discharge part 4 which is common to the component A and the components A and B are conjugated to provide the objective latent crimpable conjugate fiber having (i) >=4 numbers/cm difference between numbers of crimps before and after boiling water treatment, (ii) >=40% apparent shrinkage factor, (iii) >=0.15g/d shrinkage stress, (iv) >=3.0 g/d breakage strength, (v) 40-70% breaking elongation and (vi) 4-10d single fiber denier. |
