Spandex fiber having improved adhesive characteristics with hot melt adhesive and method for manufacturing same

Abstract

The present invention relates to a spandex fiber and a method for manufacturing the same that is capable of providing excellent adhesive characteristics, by means of a hot melt adhesive, between the spandex fiber and a polypropylene nonwoven fabric or a polyethylene film, during a diaper-manufacturing process. The method for manufacturing a spandex fiber comprises the steps of: preparing a polyurethane urea solution as a spinning solution; and dry-spinning the spinning solution to obtain the spandex fiber, where the polyurethane urea solution contains, with respect to the weight of the solid content, about 0.1 to 30 wt. % of an ethylene vinyl acetate monomer or polymer, or a derivative thereof, a C9 hydrocarbon-based resin monomer or polymer, or a derivative thereof, a C5 hydrocarbon-based resin monomer or polymer, or a derivative thereof, or a C5/C9 hydrocarbon-based resin monomer or copolymer, or a derivative thereof.

What is claimed is: 
     
         1 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, at least one selected from a compound having chemical formula 1, a polymer represented by chemical formula 2 and a copolymer represented by chemical 3 is used as an adhesion enhancer in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive, 
       
         
           
           
               
               
           
         
       
     
     
         2 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, at least one selected from a compound represented by chemical formula 4, a polymer represented by chemical formula 5 and a copolymer represented by chemical formula 6 is used as an adhesion enhancer in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive, 
       
         
           
           
               
               
           
         
       
     
     
         3 . A spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a copolymer represented by chemical formula 7 is used as an adhesion enhance in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive. 
       
         
           
           
               
               
           
         
       
     
     
         4 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a polymer represented by chemical formula 8 is used as an adhesion enhancer in an amount of 0.1 to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive. 
       
         
           
           
               
               
           
         
       
     
     
         5 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, at least one selected from a compound represented by chemical formula 1, a polymer represented by chemical formula 2 and a copolymer represented by chemical formula 3 is used as an adhesion enhancer in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive. 
       
         
           
           
               
               
           
         
       
     
     
         6 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, at least one selected from a compound represented by chemical formula 4, a polymer represented by chemical formula 5 and a copolymer represented by chemical formula 6 is used as an adhesion enhancer in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive, 
       
         
           
           
               
               
           
         
       
     
     
         7 . A method for manufacturing a spandex fiber having improved adhesive characteristics with a hot melt adhesive, wherein in a manufacture of the spandex fiber using a polyurethane urea polymer, a copolymer represented by chemical formula 7 is used as an adhesion enhance in an amount of 0.1 wt. % to 30 wt. % to enhance the adhesive characteristics with the hot melt adhesive.