Thermally adhesive sheath-core conjugate fiber and tricot fabric

Abstract

A thermally adhesive sheath-core conjugate fiber has, as a core part, a polyester having a melting point of at least 250° C., and has, as a sheath part, a polyester having a melting point which is at least 215° C. and is 20-35° C. lower than the melting point of the polyester constituting the core part. The thermally adhesive sheath-core conjugate fiber is characterized by having a strength of 3.8 cN/dtex or higher and an elongation of 35% or higher.

1 - 3 . (canceled) 
     
     
         4 . A thermally adhesive sheath-core conjugate fiber comprising:
 a core part including a polyester having a melting point of 250° C. or higher; and   a sheath part including a polyester having a melting point of 215° C. or higher and lower by 20 to 35° C. than that of the polyester constituting the core part,   wherein the thermally adhesive sheath-core conjugate fiber has a strength of 3.8 cN/dtex or more and an elongation of 35% or more.   
     
     
         5 . The thermally adhesive sheath-core conjugate fiber according to  claim 4 , wherein the sheath-core conjugate fiber has a total fineness of 30 dtex or more and a single yarn fineness of 3.0 dtex or less. 
     
     
         6 . A tricot fabric comprising the thermally adhesive sheath-core conjugate fiber according to  claim 4 . 
     
     
         7 . A tricot fabric comprising the thermally adhesive sheath-core conjugate fiber according to  claim 5 .