POWERgrass hybrid grass system consists in:
A. a synthetic turf with 60 mm fibres, disposed in 6300 tufts ≈ 75600 monofilaments per sqm. The fibre-tufts are bound on the backing with tearing resistance ≥35 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 of 18000 dtex are composed from 6 strong and soft monofilaments of two colour and they look like natural grass because of their ondulated shape offering aesthetic appearance. The filaments section has a width of 1400 microns and thickness that is progressively strengthen from the edges of 200 microns to the centre spine of 350 microns. The filaments resilience is ≥2.50 cN (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 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.