| 摘要 |
A composite fiber which expresses crimping and whose percentage of crimp varies reversibly in response to humidity, which maintains excellent variation properties in percentage of crimp even after the processes of dyeing and finishing, and which is highly practical and can easily yield comfortable fabrics with reduced stuffy feeling. The composite fiber comprises a polyester component and a polyamide component bound in a side-by-side or eccentric core-in-sheath structure, exhibiting a percentage of crimp DC of 1.3-15.0% after the composite fiber is treated in boiling water for 30 minutes under a load of 1.76 x 10 -3 cN/dtex, and then dry heat treated for 30 minutes at 100
C under a load of 1.76 x 10 -3 cN/dtex for stabilization of the crimps and further dry heat treated for one minute at 160
C under a load of 1.76 x 10 -3 cN/dtex, as well as a percentage of crimp HC of 0.5-10% after immersion in water at 20-30
C for 10 hours, and a difference ”C of 0.5-7.0% between the percentage of crimps. |
