Infill for synthetic and hybrid turfs and turfs so obtained

Abstract

A synthetic turf having a mat with a face arranged adjacent to a surface to coat, and a face opposite the face. The turf includes a plurality of blades made of a synthetic material that are connected to the mat. Above the face of the mat, an infill material is provided that is arranged among the blades. The infill material includes a predetermined percentage by volume of a vegetable material consisting of rachis of cereal ear.

1 . An infill material for synthetic turfs, or hybrid synthetic-natural turfs, for sports, or recreational, or ornamental uses comprises a predetermined percentage by volume of a vegetable material consisting of rachis of cereal ear;
 wherein the rachis of cereal ear is not coated by a layer, or film, of material.   
     
     
         2 . The infill material, according to  claim 1 , wherein said percentage by volume of said material consisting of rachis of cereal ear in said infill material is set between 5% and 90%. 
     
     
         3 . The infill material, according to  claim 1 , wherein said vegetable material consisting of rachis of cereal is maize cob. 
     
     
         4 . The infill material, according to  claim 1 , wherein said material infill consists entirely of the vegetable material consisting of rachis of cereal ear not coated by a layer, or film, of material. 
     
     
         5 . The infill material, according to  claim 1 , wherein the vegetable material consisting of rachis of cereal ear not coated by a layer, or film, of material is dried or substantially dried with a moisture content less than 50%. 
     
     
         6 . The infill material, according to  claim 1 , wherein the vegetable material consisting of rachis of cereal ear not coated by a layer, or film, of material has a moisture content less than 30%. 
     
     
         7 . The infill material, according to  claim 1 , wherein said vegetable material consisting of rachis of cereals has a granulometry set between 0.3 mm and 5.0 mm. 
     
     
         8 . The infill material, according to  claim 5 , wherein the dried or substantially dried vegetable material of rachis of cereal ear not coated by a layer or film of coating material is obtained by subjecting to a drying step into a silo a vegetable material of rachis of cereal ear not coated by a layer or film of coating material with an initial moisture content greater than 50%. 
     
     
         9 . The infill material, according to  claim 8 , wherein the vegetable material of rachis of cereal ear not coated by a layer or film of coating material having an initial moisture content than is greater 50% introduced into the silo where an air-flow at a predetermined temperature is also fed for reducing the moisture content from the value greater than 50% to the value less than 50%. 
     
     
         10 . The infill material, according to  claim 1 , wherein the vegetable material consisting of rachis of cereal ear not coated by a layer or film of material is rounded by subjecting the vegetable material consisting of rachis of cereal ear to a rounding treatment. 
     
     
         11 . The infill material, according to  claim 1 , wherein the vegetable material consisting of rachis of cereal ear not coated by a layer or film of material not coated by a layer or film of material is rounded by subjecting the vegetable material consisting of rachis of cereal ear to a rounding treatment and wherein the rounded vegetable material consisting of rachis of cereal ear not coated by a layer or film of material so obtained is dried or substantially dried up to reaching a predetermined moisture content by a drying treatment. 
     
     
         12 . The infill material, according to  claim 5 , wherein the dried or substantially dried vegetable material of rachis of cereal ear not coated by a layer or film of coating material with a moisture content less than 50% is introduced into a bag made of an impermeable material thus avoiding that it can absorb moisture from the external environment until the moment of its use. 
     
     
         13 . The infill material, according to  claim 1 , wherein the vegetable material of rachis of cereal ear not coated by a layer or film of coating material has a bulk density comprised between 0.3 kg/dm 3  and 0.5 kg/dm 3 . 
     
     
         14 . A synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses comprising:
 a mat having a first face arranged on a surface and a second face opposite to the first face;   a plurality of blades of synthetic material connected to said mat and protruding from the second face in such a way to form a synthetic mat;   an infill material distributed on the second face of the mat among the plurality of blades of synthetic material, wherein the infill material comprises a vegetable material consisting of rachis of cereal ear which is not coated by a layer or film of material.   
     
     
         15 . The synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses according to  claim 14  wherein the infill material, furthermore, comprises at least a second layer arranged above the layer consisting of rachis of cereal ear which is not coated by a layer or film of material, wherein the second layer consists of:
 a layer comprising a predetermined percentage by volume of cereal husks; 
 a layer comprising a predetermined percentage by volume of a loose final product from raw material based on ground cork; 
 a layer comprising a predetermined percentage by volume of rachis of cereal ear which is not coated by a layer or film of material; 
 a layer comprising a predetermined percentage by volume of a ligninic and/or resinous material of vegetable origin; 
 a layer comprising a mixture of at least two material selected among: the cereal husks, the loose final product from raw material based on ground cork, the rachis of cereal ear which is not coated by a layer or film of material, the ligninic and/or resinous material of vegetable origin, sand. 
 
     
     
         16 . The synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses according to  claim 14 , wherein the vegetable material of rachis of cereal ear which is not coated by a layer or film of material having a predetermined moisture content less than 50% is stored within a bag which is made of an impermeable material, and wherein, when the vegetable material of rachis of cereal ear which is not coated by a layer or film of material is discharged from the bag to be distributed on the second face of the mat has still the same, or substantially the same, predetermined moisture content less than 50%. 
     
     
         17 . The synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses according to  claim 14  wherein the rachis of cereal ear which is not coated by a layer or film of material is preliminarily dried up to obtaining a predetermined moisture content less than 50%. 
     
     
         18 . The synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses according to  claim 14  wherein the rachis of cereal ear which is not coated by a layer or film of material is rounded by preliminarily subjecting the vegetable material consisting of rachis of cereal ear to a rounding treatment. 
     
     
         19 . A synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses comprising:
 a mat having a first face arranged on a surface and a second face opposite to the first face;   a plurality of blades of synthetic material connected to said mat and protruding from the second face in such a way to form a synthetic mat;   an infill material distributed on the second face of the mat among the plurality of blades of synthetic material, wherein the infill material comprises a layer consisting of a mixture of a predetermined percentage volume of rachis of cereal ear which is not coated by a layer or film of material with a predetermined percentage volume of at least a material selected among: a cereal husks, a loose final product from raw material based on ground cork, a ligninic and/or resinous material of vegetable origin, sand.   
     
     
         20 . The synthetic or hybrid synthetic-natural turf for sports or recreational or ornamental uses according to  claim 19  wherein the ligninic and/or resinous material of vegetable origin is the tip cap of the cereal which is the portion attaching the kernel to the rachis of the cereal ear.