Profile of artificial turf (2)

(a) artificial lawn without sand filling
In the United States, most artificial turf used artificial grass fiber material is high-grade nylon material, also use multivariate fiber, and not sand filled artificial lawn can also be divided into two kinds of water seepage and no seepage. The lawn in the shape like natural grass, with a layer of shock absorption foam cushion layer, shock absorbing layer has a variety of different density and thickness. Because in the domestic real mastery of artificial turf technology manufacturers are not many, but mostly foreign technology, therefore, not filled with sand in the laying of artificial turf, especially the laying of shock absorbing foam cushion layer must be made by the foreign expert to complete. Under the shock foam to be paved with a layer of smooth asphalt as the foundation, the asphalt is also paved with gravel, sand and pebbles as the foundation, and the drainage system structure is the most critical link. In addition, this type of artificial turf in the installation process must use special mechanical artificial grass, especially in some professional sports venues or the high cost of laying installation is particularly important, otherwise the field leveling and uniformity requirements will not be reached, such as hockey training venue for the 2008 Olympic Games in Beijing City Sports Technical College hockey field and part in order to meet the special needs of movable pieces of artificial grass, artificial grass and other venues must be in strict accordance with the above requirements for construction.
(two) filled artificial turf
Because of the international advanced level of good performance and good practicality, the granular grass has been accepted by the majority of users in China. The materials used for the majority of polyethylene (PE) or polypropylene (PP) more than two kinds of polymer materials, the fiber is not filled with sand grass lawn, 2 - 3 mm below the surface of the backfill quartz sand and rubber particles. Its movement characteristics are very close to the natural lawn, and can be used all year round, all-weather. Usually lawn after the need to maintain the use of 6 - 8 months to achieve the best state. This type of lawn is particularly suitable for laying outdoors, its warranty period is usually 5-8 years, but its actual life can be more than 5 years. In the long dry weather, as long as a sprinkling of water on the lawn, you can reduce the risk of athlete abrasions.