Synthetic turf with composite backing with open mesh

Abstract

A synthetic turf cover system for covering various types of sloping ground includes synthetic grass blades tufted into and through a composite backing, with the composite backing including woven open mesh textile lower layer and a woven textile upper layer positioned above and adjacent the woven open mesh textile lower layer. The woven upper layer is more tightly woven than the woven textile open mesh lower layer. The woven open mesh textile lower layer provides good friction/grip with the ground or a ground-covering membrane, while the woven textile upper layer provides good strength.

What is claimed is: 
     
         1 . A synthetic turf cover system for erosion protection, wherein the synthetic turf cover system comprises:
 a composite backing comprising a woven open mesh textile lower layer and a woven textile upper layer positioned above and adjacent the woven open mesh textile lower layer; and   synthetic grass blades extending above the composite backing and through the composite backing, the synthetic grass blades being tufted into the composite backing.   
     
     
         2 . A synthetic turf cover system as claimed in  claim 1  wherein the woven open mesh textile lower layer has been needle punched. 
     
     
         3 . A synthetic turf cover system as claimed in  claim 1  wherein the woven upper layer is much more tightly woven than the woven open mesh textile lower layer. 
     
     
         4 . A synthetic turf cover system as claimed in  claim 1  wherein the woven open mesh textile lower layer comprises continuous filaments. 
     
     
         5 . A synthetic turf cover system as claimed in  claim 1  wherein the woven open mesh textile layer is positioned for direct contact with a ground surface or with a membrane covering a ground surface. 
     
     
         6 . A synthetic turf cover system as claimed in  claim 1  wherein the woven textile upper layer comprises a first woven textile and a second woven textile. 
     
     
         7 . A synthetic turf cover system as claimed in  claim 1  further comprising a geomembrane positioned beneath the composite backing and atop a surface of the ground. 
     
     
         8 . A synthetic turf cover system as claimed in  claim 1  wherein the synthetic grass has a density of between about 10 ounces per square yard and 120 ounces per square yard. 
     
     
         9 . A synthetic turf cover system as claimed in  claim 1  wherein the synthetic grass comprises blades with a thickness of at least about 100 microns. 
     
     
         10 . A synthetic turf cover system as claimed in  claim 1  wherein the woven open mesh textile lower layer is between about 1 oz/yd 2  and 18 oz/yd 2  mass per unit area. 
     
     
         11 . A synthetic turf cover system as claimed in  claim 1  wherein the synthetic grass blades comprise fibers with an average length of between about ½ and 3 inches. 
     
     
         12 . A synthetic turf cover system for erosion protection, comprising:
 a geomembrane to be positioned atop a ground surface; and   a synthetic turf positioned atop the geomembrane and comprising a composite backing comprising woven open mesh textile lower layer and a woven textile upper layer positioned above and adjacent the woven open mesh textile lower layer; and synthetic grass blades extending above the composite backing and through the composite backing, the synthetic grass blades being tufted into the composite backing.   
     
     
         13 . A synthetic turf cover system as claimed in  claim 12  wherein the woven open mesh textile lower layer has been needle punched. 
     
     
         14 . A synthetic turf cover system as claimed in  claim 12  wherein the woven upper layer is much more tightly woven than the woven open mesh textile lower layer. 
     
     
         15 . A synthetic turf cover system as claimed in  claim 12  wherein the woven open mesh textile lower layer is between about 1 oz/yd 2  and 18 oz/yd 2  mass per unit area. 
     
     
         16 . A synthetic turf cover system as claimed in  claim 12  wherein the woven textile upper layer comprises a first woven textile and a second woven textile. 
     
     
         17 . A synthetic turf cover system as claimed in  claim 12  wherein the synthetic grass has a density of between about 10 ounces per square yard and 120 ounces per square yard. 
     
     
         18 . A synthetic turf cover system as claimed in  claim 17  wherein the synthetic grass comprises blades with a thickness of at least about 100 microns. 
     
     
         19 . A synthetic turf cover system as claimed in  claim 12  wherein the woven open mesh textile lower layer comprises continuous filaments. 
     
     
         20 . A synthetic turf cover system as claimed in  claim 12  wherein the synthetic grass blades comprise fibers with an average length of between about ½ and 3 inches.