Bicomponent Spunbond Nonwoven Fabric and Method for Manufacturing the Same

Abstract

A method for manufacturing a bicomponent spunbond nonwoven fabric includes a sheath-core filament, wherein a core component of the filament includes polypropylene, wherein a sheath component of the filament includes bio-polyethylene, and wherein the method includes: drawing the filament; supplying hot air to the drawn filament to form a fiber web; and bonding the fiber web.

What is claimed is: 
     
         1 . A method for manufacturing a bicomponent spunbond nonwoven fabric including a sheath-core filament,
 wherein a core component of the filament includes polypropylene,   wherein a sheath component of the filament includes bio-polyethylene, and   wherein the method comprises:
 drawing the filament; 
 supplying hot air to the drawn filament to form a fiber web; and 
 bonding the fiber web. 
   
     
     
         2 . The method of  claim 1 , wherein the hot air has a temperature of 170 to 260 degrees C. 
     
     
         3 . The method of  claim 1 , wherein the supplying the hot air is performed under a pressure of 4 kPa to 15 kPa. 
     
     
         4 . The method of  claim 1 , further comprising spinning before the drawing,
 wherein, in the spinning, a spin beam spinning the polypropylene has a temperature of 245 degrees C. or higher, and a spin beam spinning the bio-polyethylene has a temperature of 240 degrees C. or higher.   
     
     
         5 . The method of  claim 4 , wherein the spin beam for the polypropylene and the spin beam for the bio-polyethylene have a temperature difference of 2 to 10 degrees C. 
     
     
         6 . The method of  claim 1 , wherein a bonding pattern region has an area that is 9% to 25% of a total area of the nonwoven fabric. 
     
     
         7 . The method of  claim 6 , wherein the bonding pattern region includes 150 to 650 pin regions per 1 m 2 . 
     
     
         8 . A bicomponent spunbond nonwoven fabric comprising a sheath-core filament,
 wherein a core component of the filament includes polypropylene,   wherein a sheath component of the filament includes bio-polyethylene, and   wherein a bonding pattern region has an area that is 9% to 25% of a total area of the nonwoven fabric.   
     
     
         9 . The bicomponent spunbond nonwoven fabric of  claim 8 , wherein the bonding pattern region includes 150 to 650 pin regions per 1 m 2 .