The
artificial turf grass is composed of three layers of materials. The foundation layer is composed of compacted soil layer, gravel layer and asphalt or concrete layer. The foundation layer shall be solid, non deformable, smooth and impermeable, i.e. general concrete site. Due to the large area of hockey field, the foundation layer must be handled well during construction to prevent subsidence. If the concrete layer is paved, the expansion joint shall be cut after the concrete is cured to prevent thermal expansion deformation and cracks.
The foundation layer of
the artificial turf grass is a buffer layer, usually composed of rubber or foam plastics. The rubber has moderate elasticity and thickness of 3 ~ 5mm. The cost of foam plastics is low, but the elasticity is poor, the thickness is 5~10mm, the thickness of the lawn is too soft, and it is easy to sag. It is too thin and inelastic to buffer. The buffer layer shall be firmly pasted on the foundation layer, generally with white emulsion or universal adhesive.
The third layer of
the artificial turf grass, also the surface layer, is the turf layer. According to the manufactured surface shape, there are fluffy turf, annular crimped nylon fiber turf, leafy polypropylene fiber turf, permeable turf made of nylon fiber, etc. This layer must also be glued to rubber or foam plastics. During construction, it must be fully glued, pressed and pasted in turn, without wrinkling and folding.
