| 摘要 |
<p>A synthetic-grass structure comprises a sheet substrate (1) with a plurality of filiform formations (2) extending from the substrate so as to simulate natural grass cover and a particulate filling material or infill (3) consisting of a substantially homogeneous mass of a granular plastic material dispersed between the filiform formations (2) so as to keep them in a substantially upright condition. The infill (3) forms a layer of thickness not greater than 40 millimetres, has a grain size smaller than 5 millimetres, and consists of plastic material with a value of elastic return such that the structure has a KA value of 35-50, which enables its use for making athletics tracks. <IMAGE></p> |
