Artificial lawn

Abstract

Provided is an artificial lawn that has a high durability and does not undergo fibrillation over a long time. In the artificial lawn, flat filament yarns, which are produced by uniaxially stretching a crystalline plastic material to give a crystal orientation degree of 0.75-0.90, are used as piles ( 3 ) to be implanted in a base fabric ( 2 ).

1 . An artificial turf in which piles are implanted in a base fabric, wherein the pile comprises a flat filament yarn having a degree of crystal orientation of 0.75 to 0.90 produced by uniaxially stretching a crystalline plastic. 
     
     
         2 . The artificial turf according to  claim 1 , wherein the degree of crystal orientation of the pile is 0.75 to 0.85. 
     
     
         3 . The artificial turf according to  claim 2 , wherein the flattening ratio (W/H) of the pile is 3.0 to 7.0 where H represents a length in the minor axis direction of the cross section of the pile, and W represents a length in the major axis direction thereof. 
     
     
         4 . The artificial turf according to  claim 3 , wherein the length H in the minor axis direction of the cross section of the pile is 180 to 350 μm. 
     
     
         5 . The artificial turf according to  claim 1 , wherein the tensile modulus of elasticity of the pile is 150 to 350 N/mm 2 . 
     
     
         6 . The artificial turf according to  claim 1 , wherein the crystalline plastic comprises a linear low density polyethylene (L-LDPE) having a density of 0.900 to 0.940. 
     
     
         7 . The artificial turf according to  claim 2 , wherein the tensile modulus of elasticity of the pile is 150 to 350 N/mm 2 . 
     
     
         8 . The artificial turf according to  claim 3 , wherein the tensile modulus of elasticity of the pile is 150 to 350 N/mm 2 . 
     
     
         9 . The artificial turf according to  claim 4 , wherein the tensile modulus of elasticity of the pile is 150 to 350 N/mm 2 . 
     
     
         10 . The artificial turf according to  claim 2 , wherein the crystalline plastic comprises a linear low density polyethylene (L-LDPE) having a density of 0.900 to 0.940. 
     
     
         11 . The artificial turf according to  claim 3 , wherein the crystalline plastic comprises a linear low density polyethylene (L-LDPE) having a density of 0.900 to 0.940. 
     
     
         12 . The artificial turf according to  claim 4 , wherein the crystalline plastic comprises a linear low density polyethylene (L-LDPE) having a density of 0.900 to 0.940. 
     
     
         13 . The artificial turf according to  claim 5 , wherein the crystalline plastic comprises a linear low density polyethylene (L-LDPE) having a density of 0.900 to 0.940.