JPH0259243B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to artificial turf, and more particularly to an athletic field made of sand-containing artificial turf suitable for golf course greens.

Sand-filled artificial grass is made by filling sand into the grass grains.
Recently, it has been used for golf course greens because it has a characteristic and appearance similar to that of natural grass. In this case, the spike
In order to make the green feel as soft as natural grass when stepped on, European and American artificial grass golf courses use a method of laying plastic foam under the artificial grass. However, with this configuration, the ball does not bounce much and stops relatively well for so-called approach shots hit from a relatively short distance, but for long shots hit from a relatively far position such as tee ground or fairway, the ball stops relatively well. It has been pointed out that the ball bounces too much and does not stop as desired.

This invention was made in view of the above-mentioned drawbacks of the conventional art.The purpose of this invention is to provide a soft feel similar to natural grass when stepped on with spike shoes, and to provide a golf ball that is hit from all distances near and far. To provide an athletic field made of sand-containing artificial grass, which is improved so as to be able to perform almost the same behavior as a green made of natural grass, and is particularly suitable for the green of a golf course.

That is, the present invention provides a so-called sand-containing artificial lawn by interposing a second sand-containing artificial lawn between a base having a substantially smooth upper surface and a sand-containing artificial lawn laid on this base. It is characterized by a layered structure of grass, and aims to achieve the above object by utilizing the appropriate buffering effect of the second sand-containing artificial lawn.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.

Referring to the accompanying drawings, this artificial grass athletic field includes a base 1 having a substantially smooth upper surface.
It is equipped with In this case, the base 1 may be a permeable structure made of chestnut stone, crushed stone, etc., or may be a non-permeable structure made of concrete, asphalt, etc. In addition, if the upper surface is formed smoothly,
The base 1 may be inclined to some extent. An artificial lawn 2 is laid on this base 1, and fine-grained sand 3 is filled into the grass grains. In the case of the artificial lawn 4, a second artificial lawn 5 containing sand is interposed between this and the base 1.

Like the first sand-filled artificial lawn 4, this second sand-containing artificial lawn 5 is made of an artificial lawn 6 whose grains are filled with sand 7. It may be a cheap one that does not look very good because it is covered by the sand-containing artificial lawn 4 of No. 1, and the density of the lawn is coarse enough to suppress the flow of sand 7 due to treading pressure. It's good.

In this embodiment, the second sand-containing artificial lawn 5 has a single-layer structure, but it can also have a multi-layer structure if necessary. Further, as the artificial lawn 2 used for the first sand-containing artificial lawn 4, for example, polyamide, polyethylene terephthalate,
A slit yarn made by slicing a film of polyurethane, polyvinylidene chloride, polypropylene, etc. is made into a pile yarn, or a flat yarn is made by passing it through a nozzle with irregular cross-sectional holes using a melt spinning method, and this is used as a pile yarn to be used as a backing base fabric. Planted plants are preferred. On the other hand, the sand 3 and 7 filled in the artificial lawns 2 and 6 are silica sand No. 5 to 8.
Preferably something as small as a number.

As described above, according to the present invention, a second sand-containing artificial lawn 4 is provided between the first sand-containing artificial lawn 4 serving as the playing surface and the base 1.
Since the sand-containing artificial lawn 5 is interposed, the buffering effect of the sand 6 filled in the grass grains and the unique elasticity of the synthetic resin leaves planted in the artificial lawn 6 can be moderately balanced. The assembly effect provides an athletic field that exhibits characteristics that more closely resemble natural grass. In addition, by selecting the sand filling amount of the second sand-containing artificial lawn 5 and the grass density of the artificial lawn 6, the overall characteristics can be more finely tuned.
It also has the advantage of being easily changeable.

In the above embodiments, the case where the green of a golf course is constructed is explained, but the present invention is of course not limited to this, and can of course be applied to, for example, a baseball field, a soccer field, a hockey field, etc. be.

[Brief explanation of the drawing]

The figure is a partially sectional view showing an embodiment of the present invention. In the figure, 1 is a base, 2 and 6 are artificial lawns, 3 and 7 are sand, 4 is a first artificial lawn containing sand, and 5 is a second artificial lawn containing sand.

Claims (1)

[Scope of Claims] 1. An athletic field made of artificial grass, which is formed by laying artificial grass on a substantially smooth base and filling the grains of the artificial grass with sand, comprising: An athletic field made of artificial grass, characterized in that a second artificial grass containing sand is interposed between the grass and the artificial grass.