JPH0439842Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sand-retaining artificial turf that prevents sand spread within the turf from flowing out into the side ditch.

[Conventional technology]

2. Description of the Related Art So-called grounds such as baseball fields, tennis courts, gateball fields, and golf courses are replacing natural grounds such as soil, clay, and grass with artificial turf grounds.

This artificial turf field is one in which artificial turf is laid on a stable base such as asphalt or concrete, but recently, artificial turf fields containing sand have been attracting attention, in which sand is sprinkled within the grains of the turf.

Artificial turf grounds cannot absorb large amounts of rainwater regardless of the presence of sand, so the stable foundation is slightly sloped and gutters are installed along the edges.

FIG. 2 is a sectional view of the end side of a conventional sand-containing artificial turf ground.

An artificial turf 3 is laid on a stable base 1 made of concrete via a cushion material 2 such as felt, and sand 4 is poured into the turf grains. A side gutter 5 is provided on the end side of the stable base 1, and serves as a drainage gutter for rainwater.

[Problem that the invention attempts to solve]

However, in such conventional sand-containing artificial turf grounds, as shown in FIG.
The sand 4 spread on the side edges of the ground not only flows into the side gutter 5 together with rainwater, impairing the flow of the gutter, but also causes the sand on the ground to gradually decrease during long-term use. There were some flaws.

The present invention was developed as a result of studies to solve the drawbacks of conventional sand-containing artificial turf grounds.
This is what was obtained.

Therefore, an object of the present invention is to provide a sand-retaining artificial turf that prevents sand runoff loss.

[Means for solving problems]

In order to achieve the above object, the present invention takes the following measures.

In other words, the sand-retaining artificial turf of the present invention is constructed by laying artificial turf on a stable base with side grooves on the edge sides, and in a sand-containing artificial turf ground with sand sprinkled within the turf, the edge facing the side grooves is The artificial turf pile density on the sides is higher than the pile density on other parts.

Grounds in this invention include baseball fields, tennis courts, gateball fields, golf courses, amusement parks, gardens,
It is a general term for balconies, etc.

A stable foundation is a foundation made of concrete, asphalt, etc.

Edges and gutters are grooves that are installed at breaks in the grass, such as around grounds, between courts, and between holes on a golf course.

The artificial turf in this invention has two different pile densities.
Various types of artificial turf are used, but conventionally known types of artificial turf can be used. Pile threads made of synthetic resin such as nylon or polypropylene are planted in loops on the base fabric, and part or all of these loops are cut to create turf. It is made into a shape.

Artificial turf can be laid directly on the stable base, but cushioning materials such as felt can also be provided in between.

The most important feature of this invention is that it increases the pile density at the edge of the artificial turf facing the gutter. Although it is possible to increase the pile density and manufacture only the edges of the artificial turf as a single piece, it is not industrially practical. Therefore, it is preferable to joint artificial turf with a high pile density in the form of a tape only in this area.

Normally, the pile density of the artificial turf used for sand-retaining artificial turf is approximately 5 to 6 pieces/cm ² , but the pile density of the artificial turf used for this end side is preferably 7 pieces/cm ² or more, and more preferably The number is 7 to 10 pieces/ ^cm2 . If the pile density is less than 6 piles/cm ² , the effect of preventing sand runoff will be small, and if it is more than 11 piles/cm ² , the pile will feel hard when stepped on, and it will not feel like grass, which is undesirable. The pile density here refers to the number of flocks when viewed from the backstitch side of the product.

The sand to be sprinkled into the grass is not particularly limited, but natural silica sand with a high silica content is preferred.

FIG. 1 is a cross-sectional view of the edge and side of the sand-retaining artificial turf of the present invention, in which a non-woven cushion material 2 is spread on a concrete stable base 1, and nylon pile threads 6 are placed on top of the non-woven cushion material 2 at a normal density. An artificial turf 3 with flocked fibers is laid on the base fabric 7. A side gutter 5 is provided at the end of the stable base 1, and the pile density of the artificial turf 3' on the end side facing the side gutter 5 is higher than that of the artificial turf 3.

[Effect]

The artificial turf on the edges facing the side gutter of the sand-preventing artificial turf of this invention has a high pile density, so it acts as a filter when rainwater flows into the gutter, allowing water to pass through but almost no sand. becomes. Therefore, the sand spread within the grass grains will not be washed away into the gutters.

〔Example〕

On a stable base of asphalt concrete, artificial turf with a normal pile density was first laid down to a distance of about 30 cm from the U-shaped groove to the inside of the court using a known construction method, and then artificial turf with a high pile density (9 pieces/cm ² ) was laid. It was laid around the remaining U-shaped groove.

Afterwards, sand was spread within the grain of two types of artificial turf with different pile densities to create an artificial turf tennis court with sand.

After 6 months, we checked how the sand from the tennis court finished in this way was flowing into the U-shaped groove. As a result, the top sand in the peripheral area did not flow out at all due to the effect of increasing the density of the pile.

[Effect of idea]

In the sand-retaining artificial turf of this invention, the pile density of the artificial turf at the edges is higher than the pile density at other parts, so the pile acts as a filter, allowing water to pass through but hardly letting sand through. Prevent sand from flowing into the gutters along with rainwater.

Therefore, drainage is completely the same as with conventional grass, and artificial grass without sand loss can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the end side of the sand-blocking artificial turf according to the present invention, and FIG. 2 is a sectional view of the same according to the prior art. 1... Stable base, 2... Cushion material, 3...
Normal artificial turf, 3'...Artificial turf with high pile density,
4...Sand, 5...Gutter.

Claims (1)

[Scope of utility model registration request] In a sand-containing artificial turf ground where artificial turf is laid on a stable base with gutters on the side edges and sand is sprinkled within the grass grain, the artificial turf pile density on the end side facing the side gutters is compared to other areas. A sand-preventing artificial turf characterized by having a pile density higher than that of .