JPH0782704A - Artificial sod - Google Patents

Abstract

PURPOSE:To provide artificial sod that is substantial and free from maintenance. CONSTITUTION:A plurality of artificial sods, formed wish sharpened grass points 6b approximately in crateriform shapes, are planted thickly in the lengthwise and the crosswise directions over the surface of a flexible resin sheet 2. The flexible resin sheet 2 is laid over the surface of the ground and fixed to the surface with fixing devices 3. Filling earth 8 in a specified thickness is placed over the flexible resin sheet 2 so that the parts forming the sharpened grass points 6b can be exposed to the ground surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial turf, and more particularly to an artificial turf which can be used as a turf-like green space on a land occupying a large area such as a golf course or a ground.

[0002]

2. Description of the Related Art Conventionally, there are golf courses, parks, grounds and the like as places where turf is planted over a large area. Especially, the golf course has a much larger area than a park,
In addition, the quality of turf growth is often evaluated along with the design of the course. Therefore, at each golf course, the original terrain that is the subject of the course is shaped by various earthworking machines in the construction work based on the design layout and construction plan,
Construction work is underway for each hall. Then, when the entire terrain shows a predetermined shape, turf is planted on the fairway. The lawn is then cured for a certain period of time before it takes root, and then the course is maintained.

[0003]

By the way, in order to grow grass smoothly, it is necessary to improve the drainage of the ground soil.
For this reason, underdrain drainage facilities may be constructed over a wide area by laying permeable pipes depending on the soil quality of the course soil. In addition, soil improvement is carried out by the soil so that it becomes a loamy soil with a lot of sand and showing a weak acidity.

However, such ancillary work causes a large increase in the construction cost and causes a problem of so-called undeveloped development that opens up unnecessary areas. Even after the course is put into service, maintenance work such as lawn mowing, weeding, fertilization, watering, soil filling, and aeration must be carried out throughout the four seasons. For this reason, the labor cost for maintenance work also increases, leading to higher green fees for golf courses.

There is a problem of contamination with agricultural chemicals used as herbicides and pesticides, which is used as a major problem. Pesticide is not only sprayed and contaminates a limited area such as a golf course, but the components of the pesticide mixed in with groundwater as well as rainwater may contaminate downstream areas. To solve these problems, the applicant has already proposed an artificial turf that can be constructed on a land having a large area such as a golf course (see Japanese Patent Application No. 4-94841).
7 and 8 are schematic perspective views showing an embodiment of the artificial turf disclosed in this application. In the figure, reference numeral 50 indicates a flexible resin sheet.
Is laid so as to cover the whole ground, and is fixed to the ground surface by a fixing pin 51 so as not to be displaced or turned over. Further, water drain holes 52 are formed on the surface of the resin sheet 50 at predetermined intervals in the vertical and horizontal directions. On the surface of the resin sheet 50, artificial turf 54 fixed via a bottom plate 53 is vertically and horizontally arranged. The artificial turf 54 is composed of a rod-shaped stalk 55 and a pointed portion 56 formed at the tip of the rod-shaped stalk 55. Each artificial turf 54 is fixed to a resin sheet by welding or bonding at the factory. To be done.

The rod-shaped stem 55 has an upright stem portion having a small diameter as shown in FIG. 8 which is erected at a height of about 10 cm, and a pointed portion 56 imitating an actual lawn is processed and formed at the tip thereof. There is. Then, the soil 57 is inserted so as to fill the rod-shaped stem 55 to the extent that the pointed portion 56 at the tip appears on the ground surface.

However, since the leaflets 56 of the artificial turf 54 are formed by expanding the tips of the rod-shaped stems 55, the open state when the soil is put in is spread out. There is a problem that it is crushed by the soil and the leaflets 56 do not spread well with the soil. For this reason, there is a problem that the grass as a whole does not have a feeling of volume, a feeling close to that of natural grass cannot be obtained, and a large number of artificial grasses must be densely planted in a resin sheet in order to give a feeling of mass.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide an artificial turf which makes a pointed portion appearing on the ground surface have a feeling of volume and is close to the state of natural turf. To do.

[0009]

In order to achieve the above-mentioned object, the present invention provides a plurality of rod-shaped stems each having a cusp portion having a substantially cup-shaped wide upper end formed vertically and horizontally on a flexible resin sheet surface. Densely, and laying the flexible resin sheet on the ground surface and fixing it to the ground surface with a fixture, and placing the soil with a predetermined thickness on the flexible resin sheet to make the leaflets It is characterized in that the rod-shaped stem is embedded so that the formed portion appears on the ground surface. At this time, the rod-shaped stalk may be densely planted on the surface of the flexible resin sheet in a state covered with a sack, and the sac may be removed after the completion of the insertion of the soil so that the pointed portion appears on the ground surface. preferable.

As another invention, a plurality of pointed stalks each having a substantially cup-shaped wide upper end are densely and vertically planted on a surface of a flexible resin sheet, and the flexible resin sheet is laid on the ground surface and a fixture is provided. It is fixed to the ground surface with, and the pointed stems are buried so that the substantially cup-shaped portion appears on the ground surface by filling the flexible resin sheet with a soil having a predetermined thickness. To do. At this time, it is preferable that the pointed stem has an enlarged diameter portion whose diameter is partially enlarged, and the enlarged diameter portions are bundled together so that the upper end is widened in a substantially cup shape.

[0011]

According to the present invention, a plurality of rod-shaped stalks, each of which has a pointed portion having a substantially cup-shaped expanse at the upper end, are densely and vertically planted on the surface of the flexible resin sheet to form the flexible resin sheet. It is laid on the ground surface and fixed to the ground surface with a fixture, and the flexible resin sheet is soaked with a predetermined thickness of the soil so that the portion where the leaflets are formed appears on the ground surface. Since the rod-shaped stalk is embedded, it is possible to give a feeling of volume to the pointed leaf-shaped portion that appears on the constructed ground surface, and it is possible to reduce the stalk portion that constitutes the artificial turf. In addition, the flexible resin sheet can be easily and quickly laid on a large site,
Maintenance work of turf after construction can be easily done throughout the four seasons, and it is possible to always maintain the landscape as a green area without dying turf.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an artificial turf according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view having a partial cross-section showing a state in which artificial soil 1 laid on the ground surface is filled with soil. In the figure, reference numeral 2 indicates a flexible resin sheet. This resin sheet 2 usually has a thickness of 2 to 3 m.
Since it is made of a vinyl chloride resin sheet of m and exhibits a predetermined elastic property, it will not be damaged even when a rock piece or the like having an acute shape is exposed on the surface of the ground surface.

Further, the shape is formed into a roll having a predetermined width (usually set to 1 m width), so that it can be made to fit along the ground surface preliminarily shaped, for example, in the longitudinal direction of the course. Will be laid towards. Then, the resin sheets 2 are spread over the entire site by slightly overlapping the ends of the adjacent resin sheets (not shown).

The resin sheet 2 laid following the terrain such as the course is fixed to the ground surface by fixing pins 3 over the entire surface. The length and material of the fixing pin 3 can be set according to the soil quality of the ground surface, but normally, it is preferable to use a small diameter plastic pile that hardly deteriorates. Further, water drain holes 4 are formed on the surface of the resin sheet 2 at predetermined intervals in the vertical and horizontal directions. The drain holes 4 play a role of permeating a part of the rainwater sprinkled on the seat surface or the sprinkled water into the ground surface, whereby the soil soil 8 on the turf surface can hold an appropriate amount of moisture. .

Although not shown, the resin sheet 2
It is also preferable to adhere a non-woven fabric having a predetermined thickness over the entire surface of the ground contacting the ground surface. This can prevent the resin sheet 2 from slipping on the ground surface. That is, it is possible to prevent the seat 2 from shifting and moving when the golfer walks, and to prevent an unstable feel from being transmitted to the golfer's feet. In addition, this non-woven fabric forms a buffer layer, which also has the effect of reducing the fatigue of the golfer's legs.

On the other hand, on the surface of the resin sheet 2, artificial turf 6 fixed via a plate 5 at the bottom is vertically and horizontally arranged. The artificial turf 6 is usually fixed to the resin sheet 2 by welding or bonding at the factory, but it may be directly welded or bonded at a place where the resin sheet 2 is applied to a portion such as a connecting portion.

The sack 7 covered with the artificial turf 6 will now be described. Each artificial turf 6 is welded to the resin sheet 2 at the factory with the sack 7 covered. Then, after the resin sheet is laid, the soil 8 is put to a predetermined depth, and then the sack 7 is removed. Since the sack 7 is self-supporting when it is covered with the artificial turf 6, the soil 8 is covered with the resin sheet 2
It is possible to prevent the artificial grass 6 from falling down even when it is sprinkled up. The sack 7 is preferably made of a soft material such as vinyl chloride resin and transparent, but various materials can be used as long as they are self-supporting to some extent and can be used repeatedly.

As for the shape of the stem of the artificial grass 6 shown in FIG. 1, a rod-shaped stem 6a formed by twisting a plurality of thin stem materials.
Is erected at a height of about 4 to 5 cm, and the leaflets 6b at the tip of the rod-shaped stalk 6a are spread out like an actual lawn, and the rod-shaped stalks 6b appear on the ground surface until they appear on the ground surface. 6a
The soil 8 is inserted so as to fill the area. Unlike ordinary grass, this soil 8 does not need to be mixed with fertilizer,
It is sufficient to use a medium such as mountain sand with a low amount of clay. It is preferable to sprinkle the soil in a thin layer to a predetermined height so that the rod-shaped stems 6a do not fall when the soil is put. Then, when the insertion of the soil is completed, the sack 7 is removed, and the sharp leaf portion 6b appearing on the ground is replenished with the loose soil 8 so that the sharp leaf portion 6b spreads and is adjusted to give a feeling of volume.

Here, the shape of the artificial turf 6 will be described with reference to FIG. The rod-shaped stalk 6a of the artificial turf 6 shown in FIG. 1 (a) is formed by bundling a small-diameter plastic wire rod 10 and winding it with a stretchable cord material 11. Then, when the soil soil 8 is inserted, the soil soil 8 enters between the wire rods 10 and the entire leaflet portion 6b is spread out in a substantially cup shape, so that a sharp leaflet shape with a sense of volume can be formed. It should be noted that when the soil material 8 is put in, the cord material 11 is stretched so that the soil material 8 can be sufficiently spread between the respective wire rods, and the entire pointed portion 6b is surely expanded. The same figure (b) is the cord 11
Instead of this, an artificial turf 6 having a structure in which the respective wire rods 10 are bonded together with an adhesive having a weak adhesive force is shown. In this artificial turf 6, when the soil 8 is inserted, the adhesive portion 6c of the rod-shaped stem 6a is slightly split, the soil 8 enters the slit, and the leaflets 6b spread out like a cup.

In the figures (c) to (f), the rod-shaped stalk 6a of the wire 10 constituting the artificial turf 6 is twisted to make the pointed portion 6b substantially cup-shaped in advance, and the soil 8 is put in the spread state to form the pointed portion. Leaf 6b
It shows a modified example in which a feeling of volume is provided. FIG. 1C shows an artificial turf 6 in which a linear wire 10 is twisted as it is to form a spiral rod-shaped stem 6a. With such a spiral rod-shaped stem 6a, it is possible to pre-open the entire leaflet 6b as shown in the figure. The same figure (d) shows the rod-shaped stem 6 of the artificial turf 6 shown in (c).
It shows an example in which a plurality of a are bundled to form one stick-shaped stem 13. According to this modification, it is possible to realize a dense grass condition. Further, in order to give a texture and a feeling of volume, the wavy wire 15 may be twisted in a spiral shape to form the rod-shaped stem 16 as shown in FIG. (F) of the figure shows a modified example in which the rod-shaped stem 13 shown in (d) is further twisted to form a rod-shaped stem portion having a large diameter. It is preferable that the artificial turf 6 having the rod-shaped stem thus constructed is laid on a portion where the golfer frequently walks and the soil is easily drowned and the turf is severely damaged.

FIG. 3 and FIG. 4 show a process in which the artificial grass housed in the sack is attached to a resin sheet, the resin sheet is laid, and further the soil is put into it so that it can be actually used as artificial grass. It is the work sequence diagram which showed the procedure typically. In FIG. 3, FIG. 3A shows the artificial turf 6 before being attached to the resin sheet. In this state, the artificial turf 6 is planted on the plate 5, and the root part is the cord material 11. It is wound in.
Furthermore, the whole is covered with the sack 7. In this state, the resin sheet 2 is bonded at a predetermined interval as shown in FIG. Then, after laying the resin sheet 2 on a predetermined ground surface, the soil soil 8 is put in as shown in FIG. At this time, the spread thickness of the soil 8 can be changed according to the part of the course such as the fairway and the rough. Then, the sack 7 is removed, and the surface lawn soil is roughened by a ground leveling tool such as a dragonfly so that the soil 8 is spread between the wire rods 10 and the pointed portions 6b are widened. At this time, the tip 11 of the cord material 11
The soil A is clogged in A, and the leaflets 6b can be surely expanded (see FIG. 3D).

FIG. 4 is a work sequence diagram schematically showing the construction sequence for laying the artificial grass 6 on a wide ground. First, a predetermined undulation is provided on the surface of the ground G according to the course design, and the mound is shaped while striking the ground G (see FIG. 4A). Next, as shown in FIG. 3B, the resin sheet 2 is sequentially spread on the ground surface after shaping, and the plastic pile 3 is driven in to fix the entire sheet. At this time, artificial turf covered with a sack 7 is attached to the surface of the resin sheet 2, and a resin sheet of a predetermined shape is added to the missing portion of the resin sheet 2 wound in a strip shape. It is preferable to lay it without any gaps. Further spread out the soil 8 having a thickness corresponding to the part of the course.
At this time, the head of the sack 7 has a soil 8 as the sprinkling thickness.
The thickness is set so as to project about 10 mm from the surface (see (c) of the same figure).

Then, as shown in FIG. 3D, the sack 7 is removed, and the soil 6 is leveled so that the soil 8 is spread over the entire surface of the turf to widen the pointed portion 6b. Further, sprinkle water on the entire surface of the lawn to compact the soil 8. After that, the compaction roller R
Then, the soil 8 is allowed to fall down, and at that time, the required amount of the soil 8 is sprinkled on the portion where the soil 8 is insufficient. Finally, a lawn mower (not shown) is used to cut the fairway and the rough. Therefore, it is preferable to set the leaflets 6b to be long in advance so as to form the rough portion.

FIGS. 5 and 6 show, as a modified example of the artificial turf 6, a relatively short type without a rod-shaped stem portion. In this modified example, the depth of the depot that can be formed on the grass surface is about 2 cm even when hit with a duff when shooting during play.
It is based on the idea that the total height of the turf should be set to about 3 to 3.5 cm. In the artificial turf shown in FIG. 5, the root portion 10a of the bundled wire rods 10 is thinly finished, and by tightening this portion with a cord material 11 as shown in FIG. The leaflets 6b can be surely expanded.

FIG. 6 shows the sectional shape of the leaflet 6b (a-
1), (b-1) and (c-1) are shown as modified examples. Expanded portions 10b, 10d, 10e of various shapes and a root portion 10c are provided on each of the leaflets 6b.
Are formed, and a plurality of pointed portions 6 are formed at the root portion 10c.
When b is bundled, the artificial turf 6 having the upper end opened in a substantially cup shape can be formed as shown in (a-2), (b-2), and (c-2). Also in the case of this artificial grass 6, FIG.
3), (b-3), and (c-3) as shown in FIG.
However, a tubular sack 17 having an open upper end may be used.

[0026]

As is apparent from the above description, according to the present invention, it is possible to construct a large amount of artificial turf and to eliminate the maintenance work of the turf at a golf course or the like.
It has the effect of eliminating pesticide contamination.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment in which artificial turf according to the present invention is applied.

FIG. 2 is a partial front view showing an example of the shape of a rod-shaped stem that constitutes the artificial turf shown in FIG.

FIG. 3 is a partial cross-sectional view schematically showing the procedure for constructing artificial grass.

FIG. 4 is a construction sequence diagram schematically showing a procedure for constructing artificial grass on the ground surface.

FIG. 5 is a partially enlarged view showing a modified example of the leaflets 6b of the artificial grass.

FIG. 6 is a partially enlarged view showing a modified example of the leaflets 6b of the artificial grass.

FIG. 7 is a partial perspective view showing an example of a conventional artificial grass.

8 is a partially enlarged view showing an example of the rod-shaped stem shown in FIG.

[Explanation of symbols]

 2 Resin sheet 3 Fixing pin 4 Water draining hole 6 Artificial grass 6a Rod-shaped stem 6b Sharp leaf part 6b 7 Sack 8 Soil 10,15 Wire rod 11 Cord rod

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[Procedure amendment]

[Submission date] August 12, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

On the other hand, on the surface of the resin sheet 2, artificial turf 6 fixed through a sheath-shaped root tube 5 is vertically and horizontally arranged in a dense state. The artificial turf 6 is usually fixed to the resin sheet 2 by welding or bonding at the factory, but it may be directly welded or bonded at a place where the resin sheet 2 is applied to a portion such as a connecting portion.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

The sack 7 covered with the artificial turf 6 will now be described. The bottom plate surface of the root tube 5 is welded to the resin sheet 2 at the factory with the artificial grass 6 covered with the sack 7. Then, after the resin sheet is laid, the soil 8 is put to a predetermined depth, and then the sack 7 is removed. Since the sack 7 is self-supporting when it is covered with the artificial turf 6, it is possible to prevent the artificial turf 6 from falling even when the soil 8 is sprinkled on the resin sheet 2. The sack 7 is preferably made of a soft material such as vinyl chloride resin and transparent, but various materials can be used as long as they are self-supporting to some extent and can be used repeatedly.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

As for the shape of the stem of the artificial grass 6 shown in FIG. 1, a rod-shaped stem 6a formed by twisting a plurality of thin stem materials.
Is erected at a height of about 4 to 5 cm. The lower end of the rod-shaped stem 6a is densely inserted into the fixing hole of the sheath-shaped root tube 5, and the ring-shaped tightening effect of this root tube 5 sufficiently tightens the lower end of the rod-shaped stem 6a. 6
The tip portion of a becomes wider. On the other hand, the leaflets 6b at the tip of the rod-shaped stalk 6a spreads out like an actual lawn, and the rod-shaped stalk 6a is extended to the extent that the leaflet 6b appears on the ground surface.
The soil 8 is inserted so as to fill the area. Unlike ordinary grass, this soil 8 does not need to be mixed with fertilizer,
It is sufficient to use a medium such as mountain sand with a low amount of clay. It is preferable to sprinkle the soil in a thin layer to a predetermined height so that the rod-shaped stems 6a do not fall when the soil is put. Then, when the insertion of the soil is completed, the sack 7 is removed, and the sharp leaf portion 6b appearing on the ground is replenished with the loose soil 8 so that the sharp leaf portion 6b spreads and is adjusted to give a feeling of volume.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Here, the shape of the artificial turf 6 will be described with reference to FIG. The rod-shaped stalk 6a of the artificial turf 6 shown in FIG. 1 (a) is formed by bundling a small-diameter plastic wire rod 10 and winding it with a stretchable cord material 11. Then, when the soil soil 8 is inserted, the soil soil 8 enters between the wire rods 10 and the entire leaflet portion 6b is spread out in a substantially cup shape, so that a sharp leaflet shape with a sense of volume can be formed. It should be noted that when the soil material 8 is put in, the cord material 11 is stretched so that the soil material 8 can be sufficiently spread between the respective wire rods, and the entire pointed portion 6b is surely expanded. Furthermore, since the lower end of the rod-shaped stem 6a is tightened in a ring shape at the fixing hole portion of the root canal 5, the leaflets 6b are designed to be wider. The figure (b) has shown the artificial turf 6 of the structure which each wire material 10 comrades were bonded together with the adhesive material of weak adhesive force instead of the string material 11. In this artificial turf 6, if the soil 8 is put, the rod-shaped stem 6a
The adhesive portion 6c is slightly torn, the soil 8 is inserted into the tear, and the leaflet 6b spreads like a cup.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

FIG. 3 and FIG. 4 show a process in which the artificial grass housed in the sack is attached to a resin sheet, the resin sheet is laid, and further the soil is put into it so that it can be actually used as artificial grass. It is the work sequence diagram which showed the procedure typically. In FIG. 3, FIG. 3A shows the artificial turf 6 before being attached to the resin sheet, and in this state, the rod-shaped stem 6a is the root tube 5
It is planted so as to be inserted densely into the fixing hole of. Further, the rod-shaped stem 6a is tightly wound around the cord material 11. Furthermore, the whole is covered with the sack 7. In this state, the resin sheet 2 is bonded at a predetermined interval as shown in FIG. Then, after laying the resin sheet 2 on a predetermined ground surface, the soil soil 8 is put in as shown in FIG. At this time, the spread thickness of the soil 8 can be changed according to the part of the course such as the fairway and the rough. Then, the sack 7 is removed, and the surface lawn soil is roughened by a ground leveling tool such as a dragonfly so that the soil 8 is spread between the wire rods 10 and the pointed portions 6b are widened. At this time, the tip 11 of the cord material 11
The soil A is clogged in A, and the leaflets 6b can be surely expanded (see FIG. 3D).

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view showing an embodiment in which artificial turf according to the present invention is applied.

FIG. 2 is a partial front view showing an example of the shape of a rod-shaped stem that constitutes the artificial turf shown in FIG.

FIG. 3 is a partial cross-sectional view schematically showing the procedure for constructing artificial grass.

FIG. 4 is a construction sequence diagram schematically showing a procedure for constructing artificial grass on the ground surface.

FIG. 5 is a partially enlarged view showing a modified example of the leaflets of the artificial grass.

FIG. 6 is a partially enlarged view showing a modified example of the leaflets of the artificial grass.

FIG. 7 is a partial perspective view showing an example of a conventional artificial grass.

8 is a partially enlarged view showing an example of the rod-shaped stem shown in FIG.

[Explanation of symbols] 2 Resin sheet 3 Fixing pin 4 Drainage hole 5 Root canal 6 Artificial turf 6a Rod-like stem 6b Sharp leaf part 7 Suck 8 Soil 10,15 Wire rod 11 String material

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (4)

[Claims] 1. A plurality of rod-shaped stalks, each of which has a pointed portion having a substantially cup-shaped spread at its upper end, are densely planted vertically and horizontally on a flexible resin sheet surface, and the flexible resin sheet is laid on the ground surface. And fixed to the ground surface with a fixture, the flexible resin sheet is put into a soil of a predetermined thickness and the rod-shaped stem so that the portion where the leaflets are formed appears on the ground surface. An artificial turf characterized by being buried. 2. The stick-shaped stem is densely planted on the surface of the flexible resin sheet in a state of being covered with a sack, and the sack is removed after the insertion of the soil so that the apical portion appears on the ground surface. The artificial turf according to claim 1, wherein the artificial turf is formed. 3. A plurality of pointed stalks each having a substantially cup-shaped spread at the upper end are densely planted vertically and horizontally on the surface of a flexible resin sheet, and the flexible resin sheet is laid on the ground surface and fixed by a fixture. It is fixed to the ground surface, and the artificial resin is characterized in that the pointed stems are buried so that the substantially cup-shaped portion appears on the ground surface by filling the flexible resin sheet with a soil having a predetermined thickness. Turf. 4. The pointed stem has a diameter-expanded portion in which a part of its cross-section is diameter-enlarged, and the diameter-enlarged portions are bundled so that the upper end is widened into a substantially cup shape. The artificial turf according to claim 3, which is characterized in that.