JPH044401B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a method for laying artificial turf for use in athletic fields such as tennis courts, baseball fields, track and field stadiums, or walking paths in golf courses and the like.

(Prior art) Currently, in tennis courts and golf course walking paths where shoes with spikes are worn, for example,
As disclosed in the above publication, a structure in which sand is spread and filled on an artificial lawn has come to be used.

When artificial grass is filled with sand, etc., compared to simply laying artificial grass alone, it visually feels more similar to natural grass, and the impact when running and walking is softer, reducing leg fatigue. This is thought to have the advantage of not leaving any residue behind, and also having good drainage of rainwater.

However, with artificial lawns made of synthetic resin piles planted on the base fabric, the top ends of the piles are simply cut off, so if they are laid on a walking path at a golf course, for example, they may be stepped on by spikes. 4th
As shown in Figure B, the upper end of the pile cracks vertically and becomes fibrillated within a short period of time after being laid, weakening its strength and sticking to the laying surface, resulting in small pieces breaking off and losing the feel of grass. At the same time,
When it was first installed, as shown in Figure 4 (a), there was a large space upward between the piles, which caused the sand to be blown up by the wind and washed away with the flow of rainwater.

In order to eliminate sand flying up, for example,
In the invention described in Publication No. 24007, the tip of the pile is curled downward in advance.

However, simply curling the tip of the pile downward in advance as in this conventional example does not increase the strength, so the pile will become fibrillated in a short period of time, and the tip of the pile will become horizontal to the top surface of the sand as it is used. It almost bent and fell apart,
The disadvantages were that it quickly lost its feel similar to natural grass, and that it was difficult to get sand between the piles when sand was being spread, resulting in the piles being crushed by sand.

(Purpose of the Invention) This invention prevents the pile from becoming fibrillated or causing the top end of the pile to bend and stick to the laying surface even after many years of use, and also prevents filled sand from being blown up by wind or washed away by rain. To provide a method for laying artificial grass that can maintain a state close to that of natural grass for a long period of time while reducing the amount of grass.

(Structure of the Invention) The method for laying an artificial lawn of the present invention is to lay an artificial lawn in which piles are planted on the base fabric on a base made of asphalt or cement, and to spread particles such as sand onto the artificial lawn. The artificial lawn is characterized in that after the powder is spread and the pile is filled in such a state that the upper part of the pile protrudes from the upper surface of the granular material, the upper surface of the artificial lawn is heated to melt only the upper end of the pile to form a reinforced edge.

(Effects of the Invention) According to the present invention, since a reinforcing edge that is heated and melted is formed at the upper end of each pile of the artificial lawn, the strength of the upper part of the pile is significantly improved and it is difficult to become fibrillated. There is little bending and settling on the laying surface, and the beauty and elasticity of artificial grass can be maintained even after long-term use.

Furthermore, as shown in Figure 3A, the upper end of the pile melts and its cross-sectional area increases, causing it to curl somewhat, making the upward space narrower, effectively suppressing the flying up of the filled sand, and at the same time It also has the effect of preventing granular materials such as sand from being washed away by rainwater.

Furthermore, at the time of dispersing granular materials such as sand, the upper ends of the piles are not melted, so the granular materials are smoothly filled between the piles, making the laying work easier.

(Example) An example of the present invention will be described below based on the drawings.

As shown in Figure 1, a walking path for a tennis court, a sports field such as a baseball field, or a golf course, on which artificial grass is to be laid, is formed using asphalt, cement, etc. on a ground 1 that has been excavated to a predetermined depth and leveled. After forming a foundation ground 3 by laminating the bases 2, an artificial lawn 4 is laid on this foundation ground 3.

The artificial lawn 4 has a base fabric 5 lined with resin etc.
It is constructed by planting green flat piles 6 of polypropylene, polyamide, etc., and is laid immediately on the foundation ground 3.

Next, a granular material 7 made of sand or sand mixed with silica sand, rubber chips, calcium chloride, etc. is sprinkled from above the artificial lawn 4 and filled between the piles 6, 6, so that the upper end of the pile 6 is connected to the granular material 7. 3mm from top surface 7a
It is configured to protrude by about 7 mm.

Thereafter, the upper surface of the laid artificial lawn 4 is uniformly heated using a commonly used heating means such as a burner, and only the upper ends of the piles 6 are melted.

As shown in FIGS. 2 and 3, the melted upper end of the pile 6 curls slightly downward while being slightly curled, and the upper end melts and hardens to form a reinforcing edge 6a.

As a result of forming the reinforcing edge 6a at the top end of the pile in this way, as in the conventional case shown in FIG.
It is possible to prevent fibrillation of the fibers, which are finely divided downward from the upper end of the pile due to use, and also to eliminate so-called sagging of the pile 6.

Moreover, the upward gap 8 between the piles is the reinforced edge 6
Since it is narrowed by a, the granular materials 7 filled with sand and the like are hardly blown up by the influence of the wind, and even on walking paths installed on slopes, the granular materials 7 are not easily blown up by rainwater. can be prevented from being washed away.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of an artificial lawn structure laid by the artificial lawn laying method according to the present invention, FIG. 2 is a partially enlarged sectional view thereof, FIG. 3 is an enlarged longitudinal sectional view of the pile portion, and Figure A is an enlarged vertical sectional view of a conventional pile portion, and Figure B is an enlarged side view after use. 1...Ground, 2...Foundation, 3...Foundation ground, 4
...Artificial lawn, 5...Base fabric, 6...Pile, 6a
... Reinforced edge, 7... Granular body, 7a... Granular body upper surface.

Claims (1)

[Claims] 1. An artificial lawn consisting of piles planted on the base fabric is laid on a base made of asphalt, cement, etc., and granules such as sand are sprinkled on the artificial lawn to form the upper part of the piles. A method for laying an artificial lawn, in which the pile is filled so that it protrudes from the upper surface of the granules, and then the upper surface of the artificial lawn is heated to melt the upper end of the pile and form a reinforced edge.