Abstract: Production process of a granular infill material (402) for a synthetic turf surface (400), the process comprising: —providing a granular semi-finished product (2) in form of raw granules; —preparing a polymeric blend (3) comprising a polymeric material and a blowing agent; —coating the raw granules (2) with the polymeric blend (3); —subsequently, drying the polymeric blend (3) to obtain the granular infill material (402) comprising a plurality of granules (200), each one comprising a core comprising one or more of the raw granules and a polymeric coating of the core comprising the polymeric blend (3).

Abstract: A disclosed process for producing granular infill material for a synthetic turf surface includes providing scraps of a composite material comprising a textile support. A coating of the textile support includes a polymeric material. A weight percentage of the textile support is greater than or equal to 5% of a total weight of the composite material. The production process includes grinding the scraps to obtain scrap pieces, preparing a mixture comprising the scrap pieces, and heating the mixture to obtain a blend comprising the polymeric material in a softened state and pieces of the textile support dispersed in the polymeric matrix. A plurality of solid granules may be obtained from the blend to make the granular infill material. Each granule includes a polymeric matrix including the polymeric materials and a reinforcing filler dispersed in the polymeric matrix. The reinforcing filler may include pieces of the textile support.

Abstract: An artificial grass surface structure (1) for sports fields includes a mat (2) with filaments (4) which simulate a grass surface, and at least a filling layer (5) having a granular infill material (6) arranged between the filaments (4). The granular infill material for synthetic grass surfaces includes a plurality of granules (8) having a thermoplastic polymeric matrix and a load dispersed in the matrix. The load includes at least a cellulose-based vegetable component.

Abstract: An artificial grass surface structure (1) for sports fields includes a mat (2) with filaments (4) which simulate a grass surface, and at least a filling layer (5) having a granular infill material (6) arranged between the filaments (4). The granular infill material for synthetic grass surfaces includes a plurality of granules (8) having a thermoplastic polymeric matrix and a load dispersed in the matrix. The load includes at least a cellulose-based vegetable component.