Core-Sheath Conjugated Fiber

Abstract

A core-sheath conjugated fiber has excellent moisture-absorption properties, antistatic properties, and cool feeling by contact, as well as being less prone to post process trouble even when the fiber is interknitted with polyurethane or polyethylene terephthalate. The fiber includes a core portion and a sheath portion. The core portion is not exposed through the surface of the fiber, and is composed of a polyether block amide copolymer represented by Formula (1) having a hard segment composed of nylon 6. The sheath portion is composed of a nylon-6 resin, and the area ratio of the core portion to the sheath portion in a transverse section of the fiber is 3/1 to 1/5. PA represents a polyamide unit (hard segment); PE represents a polyether unit (soft segment); and n represents the number of repeating units.

1 . (canceled) 
     
     
         2 : A core-sheath conjugated fiber, comprising:
 a core portion; and   a sheath portion,   wherein the core portion is not exposed through a surface of the core-sheath conjugated fiber,   the core portion is composed of a polyether block amide copolymer represented by Formula (1), the polyether block amide copolymer having a hard segment composed of nylon 6,   the sheath portion is composed of a nylon-6 resin, and   an area ratio of the core portion to the sheath portion in a transverse section of the core-sheath conjugated fiber is 3/1 to 1/5.   
       
         
           
           
               
               
           
         
       
       [In Formula (1), PA represents a polyamide unit (hard segment); PE represents a polyether unit (soft segment); and n represents the number of repeating units.]