JP2814181B2 - Filling sand for artificial turf coat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling sand for an artificial turf coat, and more particularly to an improvement in filling sand laid between grasses of an artificial turf coat.

[0002]

2. Description of the Related Art In general, an artificial turf coat or the like has the same slip resistance when it is dry and when it is wet by rain.
In addition, in order to make the same sliding condition as that of a normal artificial grass court, it is common to spray silica sand or the like between the grasses of the artificial grass court to fill the grass. The above-mentioned silica sand generally has a color of beige, ocher, reddish brown or the like, and often contains mica fragments or the like.

[0003]

However, when the artificial turf coat is scattered and filled with silica sand, the appearance becomes clay coat-like (red color) and the density of the sand is conspicuous.
There is a problem that lines and the like are difficult to see, and there is also a problem that silica sand is worn and becomes fine and scatters, and also accumulates in a part of the coat, becomes concrete, and becomes hard.

The present invention has been devised in view of such conventional problems, and prevents the formation of sand due to the abrasion of the filling sand and the like, and delays the formation of concrete to make the coat harder. It is an object of the present invention to provide an artificial turf coat-filled sand capable of preventing the occurrence of a turf, improving the appearance and improving the texture.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention uses crushed olivine sand as filling sand and lays the crushed olivine sand at least on a surface layer between grasses of an artificial turf coat. It is an abstract. Further, it is also possible to use a olivine crushed sand at least on the surface layer side and silica sand on the lower layer side at least in the surface layer side of the filling sand. Further, as the filling sand, a mixture of crushed olivine and silica sand can be used, and in this case, the crushed olivine must be at least 20% by weight.

[0006]

The present invention is constructed as described above, and uses high hardness sand for the filling sand laid between the grasses of the artificial turf coat, thereby reducing sand abrasion and scattering of sand. In addition to preventing the coating, the coating can be prevented from being converted into concrete, and the appearance and texture can be further improved.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of an artificial turf coat embodying the present invention. Reference numeral 1 denotes a coat ground, 2 denotes an artificial turf laid on a coat ground 1, and this artificial turf 2 is placed on a sheet-like substrate 3. And resin grasses 4 are integrally planted at predetermined intervals.

Filling sand 5 made of crushed olivine is scattered and filled between the turf 4 of the artificial turf 2. Olivine is a group of magnesium-iron silicate minerals that are generally rich in magnesium, have an irregular appearance consisting of rounded grains, and crystallize in orthorhombic system, and are also called olivine. In such olivine, the crystal usually has a simple crystallographic phase, is a conglomerate of double cones, columnar surfaces and table surfaces, gloss is glassy, color is olive green, and hardness is 6 1 / Two
7, the specific gravity is 3.27 to 3.37, which increases with an increase in the iron content.

The crushed olivine can be used separately or as a mixture of crushed olivine and silica sand. In this case, the crushed olivine is laid on the surface layer of the filled sand 5. The lower layer uses silica sand. When mixed and used, the crushed olivine sand is 2% by weight.
It needs to be 0% or more.

Further, as for the thickness of the layers, for example, when the thickness of all layers is 19 mm, it is preferable that the thickness of the crushed olivine of the surface layer is about 7 mm and the thickness of the silica sand is about 12 mm. Next, a comparison of physical properties, colors, and the like between crushed olivine sand and conventionally used silica sand is shown in Table 1 below. As described above, according to the present invention, the sand 5 to be laid between the turf 4 of the artificial turf 2 and having a high hardness and specific gravity and a color close to the green of the artificial turf 2 is used. Abrasion can be reduced, sand can be prevented from scattering and skewing, the coating can be prevented from being concreted, and the appearance and texture can be further improved.

[0011]

According to the present invention, as described above, crushed olivine is used as the filling sand to be laid between the grasses of the artificial turf coat, so that abrasion of the sand is reduced, and scattering of the sand in a strong wind is prevented. It has the effect of preventing the coating from becoming concrete, improving the appearance and texture, and making the line easier to see.
There is also an effect that the density of the sand is not noticeable, and the appearance is more green, and the texture is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an artificial turf coat embodying the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Coated ground 2 Artificial turf 3 Sheet-shaped board 4 Resin turf 5 Filled sand made of crushed olivine

Claims (2)

(57) [Claims] Claims: 1. In the filling sand laid between grasses of an artificial turf coat, crushed olivine is used as the filling sand, and the crushed olivine is laid on at least a surface layer between grasses of the artificial turf coat. Characteristic sand filled artificial turf coat. 2. The artificial turf coat filling sand according to claim 1, wherein the filling sand has a multi-layer structure, wherein at least the surface layer side is made of crushed olivine and the lower layer side is made of silica sand.