POWERgrass hybrid grass system consists in:
A. a synthetic turf with fibres height 60 mm, disposed in 7350 tufts ≈ 88200 monofilaments per sqm. The fibres tufts are bound on the backing with tearing resistance ≥30 N by the technology LC-HM without obstructing the permeability and the softness of the backing. The synthetic turf is pliable to 180° on each intersection between the knots to remain elastic to the players pressure. The backing and the seams of the synthetic turf must be robust with resistance ≥500 N, to permit easy installation and duration.
- The fibres are made of two shapes and colours, with 6 strong and soft filaments mono-extruded, of which three light green with section of 325 microns and width of 1.35 mm that give a greater aesthetic value and three dark green with section of 440 microns that increase the wear-resistant. The filaments resilience of each type is ≥1.50 cN and ≥3.00 cN respectively (calculated at 300 cycles with the Favimat R Textechno method).
- The backing comprises a non-putrescible mesh with high porosity for about 320.000 voids/sqm with irregular 3D shapes to permit air circulation and roots penetration and to limit the sand migration. The mesh is ladder-proof to maintain its structure after multiply needle-tinning to aerate the root zone below. It comprises also a thin geotextile providing an insulating effect to mitigate heat and frost stress.
B. a substrate based on silica sand mixed, in volume 20-25%, with ZOEsand, a mineral-organic soil conditioner. After the synthetic turf rolls are stitched, the synthetic turf is filled and raked with cork for about 7 mm and then is filled and raked gradually with the same mix of before (sand+ZOEsand), until the formation of an infill layer of 35 mm, thus to provide the best interaction of the athlete's stud with the surface.