Artificial turf system

Abstract

An artificial turf system for installation over a receiving surface that comprises a sheet member made of a flexible material, with the sheet member defining a first surface for interfacing with the receiving surface and a turf simulating surface. The artificial turf system further comprises a plurality of primary yarns made of straight fibers upwardly extending from the second surface of the sheet member, and a plurality of secondary yarns made of textured fibers upwardly extending from the second surface of the sheet material and interspersed within the plurality of primary yarns, wherein the plurality of secondary yarns representing more than 50% in weight of the plurality of primary and secondary yarns together. The primary and secondary yarns therefore simulate together the look and feel of the different blades of grass of natural grass cover.

1 . An artificial turf system for installation over a receiving surface, the artificial turf system comprising:
 a sheet member made of a flexible material, the sheet member defining a first surface for interfacing with the receiving surface and a second surface;   a plurality of primary yarns made of straight fibers upwardly extending from the second surface of the sheet member; and   a plurality of secondary yarns made of textured fibers upwardly extending from the second surface of the sheet material and interspersed within the plurality of primary yarns;   the plurality of secondary yarns representing more than 50% in weight of the plurality of primary and secondary yarns together.   
     
     
         2 . The artificial turf system of  claim 1 , wherein the plurality of secondary yarns are made of textured, thatched or crimped fibers. 
     
     
         3 . The artificial turf system of  claim 1 , wherein the primary and secondary yarns are backstitched in parallel equally spaced apart rows on the sheet material. 
     
     
         4 . The artificial turf system of  claim 1 , wherein combined yarns composed of the primary and secondary yarns are backstitched in parallel equally spaced apart rows on the sheet material. 
     
     
         5 . The artificial turf system of  claim 3 , wherein the rows form a straight, S or Z pattern. 
     
     
         6 . The artificial turf system of  claim 3 , wherein a distance between two rows is ranged between 1/16″ and ½″. 
     
     
         7 . The artificial turf system of  claim 1 , wherein the sheet material is manufactured as one of a closed-weave woven, an opened-weave woven, leno weave cross weave or non-woven material. 
     
     
         8 . The artificial turf system of  claim 1 , wherein the thickness of the sheet member is substantially uniform and ranges between 0.20 mm to 2 mm. 
     
     
         9 . The artificial turf system of  claim 1 , wherein the mass of each of the plurality of primary yarns is ranged between 2,000 and 20,000 deniers. 
     
     
         11 . The artificial turf system of  claim 2 , wherein the mass of each of the plurality of secondary yarns is ranged between 2,000 and 20,000 deniers. 
     
     
         12 . The artificial turf system of  claim 1 , wherein the plurality of primary and secondary yarns are bound to the sheet member by heat, pressure or with Polyurethane. 
     
     
         13 . The artificial turf of  claim 1 , wherein the primary yarns have a first length, the secondary yarns have a second length, and the second length is at least equal to the first length. 
     
     
         14 . The artificial turf of  claim 1 , wherein the plurality of secondary yarns made of textured or thatch fibers represents one of: more than about 51%, more than about 55%, more than about 60%, more than about 65%, more than about 70%, more than about 75%, more than about 80%, more than about 85%, more than about 90% and more than about 95% in weight of the plurality of primary and secondary yarns together. 
     
     
         15 . The artificial turf of  claim 1 , wherein at least one of a material in which is made the secondary yarns and a process performed on the secondary yarns render the secondary yarns more rigid than the primary yarns. 
     
     
         16 . The artificial turf of  claim 1 , wherein the primary yarns are made of one of polyethylene, polypropylene, Polyamide, polyester (PET), and a combination of polyethylene and polypropylene. 
     
     
         17 . The artificial turf of  claim 1 , wherein the secondary yarns are made of one of Polyamide, Polyester (PET), polyethylene, polypropylene, and a combination of polyethylene and polypropylene. 
     
     
         18 . The artificial turf of  claim 1 , wherein the elevation of the secondary yarns with respect to the second surface is less than the elevation of the primary yarns with respect to the second surface.