JP2015148146A - Artificial lawn laying structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an artificial lawn field capable of holding a throwing event, wherein the field can be easily prepared.SOLUTION: After laying a first artificial lawn 2 on a foundation layer 1, a first packed layer 24 which has a thickness that generally reaches the upper end of turf 21 planted on the first artificial lawn is formed; and subsequently, a second artificial lawn 3 which has a second packed layer 34 formed in a thickness larger than the first packed layer is laid over the upper face of the first artificial lawn. The second packed layer is formed in the second artificial lawn in a thickness larger than the thickness of the first packed layer; therefore, even when a throwing event such as javelin throw is held, the insertion of the gear for a throwing event is stopped at the second packed layer. Even when the gear for a throwing event penetrates through the second artificial lawn, the gear for a throwing event is stopped at the first packed layer; thus the gear for a throwing event is prevented from getting damaged.

Description

  The present invention relates to an artificial lawn laying structure in which turf leaves are planted and an artificial lawn having a packed bed filled with granular materials is laid therebetween.

  Conventionally, this type of artificial lawn is widely used for various sports.

For example, in Patent Document 1, a pile is planted on a base fabric, the pile length is 130 mm or more, and the thickness of the filler filled between the piles on the base fabric is 100 mm or more. The protruding length of the pile from the upper surface is 15 mm or more and 30 mm or less,
The filler is composed of three layers: a lower layer made of elastic particles, an intermediate layer made of a mixture of an anti-caking agent, the elastic particles and hard particles, and an upper layer made of the hard particles. Artificial grass is disclosed.

JP 2009-138403 A

  The artificial turf disclosed in Patent Document 1 is configured so as to be able to cope with competitions such as throwing a kite by providing a thick filler, but it is necessary to use equipment capable of planting piles with a length of 130 mm or more. However, there was a problem that the manufacturing was not easy.

  Therefore, the present invention provides an artificial lawn stadium that can be easily manufactured and can be used for throwing competitions.

In order to achieve the above object, the present invention is configured as follows.
That is, the artificial lawn laying structure according to the present invention includes a base cloth, a plurality of lawn leaves planted on the base cloth, and a filling formed by filling granular materials between the planted parts of the lawn leaves. An artificial lawn laying structure in which a plurality of artificial turf with layers is laid, and a first artificial turf is laid above the foundation layer, and the turf leaves planted on the first artificial turf A first packed bed having a thickness reaching substantially the upper end is provided, and a second artificial lawn having a second packed layer formed to have a thickness larger than the first packed bed is the first artificial lawn. It is laid on the top surface,
The first filling layer is formed with a thickness of 15 mm or more and 30 mm or less,
The second filling layer is formed with a thickness of 40 mm or more and 110 mm or less,
It is characterized in that the insertion of the throwing tool in the throwing game is stopped at the first filling layer and the second filling layer, respectively, even in the case of the throwing game.
Further, the top surface of the second packed bed is characterized in that a surface layer containing granular materials having elasticity is formed.

According to the artificial lawn laying structure according to the present invention, since the first artificial layer having the thickness reaching the substantially upper end of the planted turf leaf is provided on the first artificial turf, the thickness of the first packed layer is set to the turf leaf. It is easy to adjust the length of the film, and the thickness can be made uniform as a whole.
In addition, since the first artificial lawn is provided with the first packed bed having a thickness that reaches substantially the upper end of the planted turf leaves, the first packed bed comes into contact with the second artificial lawn, The friction between the artificial lawn and the second artificial lawn is increased, and the respective positional deviations are less likely to occur.
In addition, since the second filling layer provided on the second artificial lawn is formed with a thickness larger than that of the first filling layer, the throwing tool can be inserted in the second filling layer even when throwing competitions such as throwing throws are performed. Even if it stops, even if it penetrates the second artificial lawn, the throwing tool can be stopped at the first packed bed, and damage to the throwing tool can be suppressed.
In addition, since the first packed bed is filled between the turf leaves of the first artificial lawn, the displacement of the granular material is suppressed by the turf leaves, and it is more difficult to penetrate the throwing tool. The fluctuation of the thickness is suppressed.

Further, the upper end of the lawn leaf of the second artificial lawn may be provided so as to protrude 10 mm or more from the upper surface of the second packed bed, and the aesthetic appearance as the artificial lawn can be improved.
Further, the lawn leaf of the second artificial lawn may be formed to a length of 50 mm or more and 120 mm or less, which can prevent the particulate matter in the packed bed from scattering, and can easily produce the lawn leaf of the artificial lawn. This is preferable.
In addition, since the second filling layer is formed to a thickness of 40 mm or more, it becomes difficult for a throwing tool for throwing competitions to penetrate it easily.
Further, since the second packed bed is formed to a thickness of 110 mm or less, the upper end of the second artificial lawn in which the turf leaves are planted to a length of about 120 mm protrudes from the upper surface of the second packed bed. Can be constructed with good aesthetics.

  The first filling layer may be formed of a hard granular material, and even if a relatively heavy throwing tool such as a hammer or a cannonball falls on the second artificial lawn, The layer does not bounce, and unnecessary movement of the throwing tool can be suppressed. Even when the throwing tool penetrates the second artificial lawn, the impact of the throwing tool is reduced by the displacement of the hard granular material in the first packed bed, and the throwing competition tool is stopped without being moved unnecessarily. be able to.

  In addition, the second packed bed may be formed of a hard granular material, and even if a relatively lightweight throwing tool such as a basket or a disk falls on the second artificial lawn, it is repelled and impacted. The impact of the throwing tool can be reduced by the displacement of the hard granular material in the second packed bed, and the throwing tool can be stopped without being moved unnecessarily.

  An artificial lawn laying structure in which a throwing competition can be carried out can be configured by using an artificial lawn that can be easily manufactured with equipment that is conventionally used.

It is sectional drawing which shows one Embodiment of the artificial lawn laying structure which concerns on this invention. It is sectional drawing which shows another form of implementation of the artificial lawn laying structure which concerns on this invention.

An embodiment of the present invention will be specifically described with reference to the drawings.
In the drawing, 1 is a base layer.
The base layer 1 is composed of a large-diameter crushed stone body and a small-diameter crushed stone body having a smaller diameter than that, and the surface is formed into a flat surface and is consolidated by a caking agent. Specifically, the foundation layer 1 is laid with a large-diameter crushed stone body, and then a small-diameter crushed stone body is laid down so that the surface thereof becomes flatter, and each small-diameter crushed stone body is formed in a mesh shape by an elastic caking agent. It is configured by connecting and consolidation.
As the caking agent, a liquid binder or a synthetic resin binder can be suitably used. In this embodiment, a urethane binder in which a solvent is contained in a urethane resin is used.
In the present embodiment, the base layer 1 is composed of the crushed stone and the caking agent as described above, but is not limited thereto, and a method that can form a flat surface can be suitably used. It may be formed by placing concrete or permeable concrete, and other methods may be used.

2 is the first artificial lawn.
In the first artificial lawn 2, a plurality of turf leaves 21 are planted on the surface side of the base fabric 22, and a backing material 23 for fixing the planted turf leaves 21 is provided on the back side of the base fabric 22. Is configured. In the present embodiment, the first artificial lawn 2 is made of a polypropylene split yarn turf yarn of 8000 dtex and a thickness of 0.065 mm on a base fabric 22 using a plain woven fabric made of polypropylene, and a pile length of 19 mm. The turf leaf 21 is formed by planting in a cut pile shape, and the turf leaf 21 is fixed by applying a backing material 23 such as SBR to the back surface of the base fabric 22.

  Between each turf leaf 21 planted on the base fabric 22 of the first artificial lawn 2, a hard granular material is filled to the vicinity of the upper end of the turf leaf 21 to form a first packed bed 24. . In the present embodiment, the first packed bed 24 is formed using JIS standard sand No. 5 silica sand.

3 is a second artificial lawn.
In the second artificial lawn 3, a plurality of turf leaves 31 are planted on the surface side of the base cloth 32, and a backing material 33 for fixing the planted turf leaves 31 is provided on the back side of the base cloth 32. Is configured. In the present embodiment, the second artificial lawn 3 is obtained by planting 2000 decitex polyethylene monofilament turf yarn in a cut pile shape with a pile length of 90 mm on a base fabric 32 using a plain woven fabric made of polypropylene. The turf leaves 31 are formed, and a backing material 33 such as urethane resin is applied to the back surface of the base cloth 32 to fix the turf leaves 31.

Between each grass leaf 31 planted on the base cloth 32 of the second artificial lawn 3, a second packed layer 34 filled with hard granular material is formed. The second filling layer 34 of the present embodiment includes a lower filling layer 34a formed by filling the upper surface of the base fabric 32 with JIS standard sand No. 4.5 silica sand, and the upper surface of the JIS standard sand No. 3 silica sand. And an upper filling layer 34b formed by filling the material. By providing the upper filling layer 34b using a granular material having a smaller diameter on the upper surface of the lower filling layer 34a, the upper surface of the second filling layer 34 can be finished more smoothly.
In the present embodiment, the lower filling layer 34a is formed to a thickness of 50 mm, the upper filling layer 34b is formed to a thickness of 20 mm, and the second filling layer 34 is formed to a thickness of 70 mm. . Thereby, the turf leaves 31 are provided so as to protrude from the upper surface of the second packed bed 34 by about 20 mm, and the aesthetic appearance as an artificial lawn is improved.

  In addition, since the second filling layer 34 is formed to a thickness of 70 mm, the second filling layer 34 can be thrown even if a throwing tool such as a cannonball or a spear is dropped when a throwing competition such as a cannonball throw or a spear is thrown. The insertion of the throwing teaching tool is stopped at the layer 34 and the penetration of the base fabric 32 is suppressed. The second filling layer 34 is preferably formed to a thickness of 40 mm or more in order to suppress damage to the base fabric 32 due to impact or contact of the throwing tool. Further, in order to improve the beauty as an artificial lawn, it is desirable that the turf leaves 31 protrude about 10 mm or more from the upper surface of the second packed bed 34. However, the longer the turf leaves 31 are, for example, the planting process. Therefore, the turf leaf 31 is preferably formed to a length of 120 mm or less. For this reason, the thickness of the second filling layer 34 is preferably formed to a thickness of 110 mm or less.

Even if a throwing tool such as a kite penetrates the base cloth 32, the first filling layer 24 formed below the anchor stops the insertion of the throwing tool, prevents contact with the base layer, It is configured to suppress damage. The first filling layer 24 is preferably formed to a thickness of 15 mm or more in order to stop the throwing tool penetrating the base fabric 32.
In addition, since the first filling layer 24 is provided when a throwing tool stopped by the second filling layer 34 has penetrated the base cloth 32, insertion of the throwing tool on the second artificial lawn 3 is possible. The thickness of the second packed layer 34 is preferably formed to be larger than that of the first packed layer 24 so as to stop. From the viewpoint of reducing the load of the construction of the first artificial lawn 2, the first packed layer 24 is 30 mm or less. It is preferable to form in thickness.
In the present embodiment, the first packed bed is formed of JIS standard sand No. 5 silica sand, and the lower and upper layers of the second packed bed are formed of No. 4.5 silica sand and No. 3 silica sand, respectively. In this way, by reducing the size of each filling layer of the artificial turf laying structure stepwise from the top to the bottom, the throwing tool becomes difficult to be inserted as it goes down, and the throwing tool etc. When inserted into the, the insertion depth of the throwing tool can be made shallower by reducing the impact.

  In the present embodiment, the first filling layer 24 is formed so as to reach the upper end of the turf leaf 21, but is not limited thereto, and the upper end of the turf leaf 21 protrudes from the upper surface of the first filling layer 24. You may make it form. However, the turf leaves 21 protruding from the first packed bed 24 come into contact with the backing material 33 of the second artificial lawn 3 laid on the upper surface thereof, and the second artificial lawn is formed on the upper surface of the first artificial lawn 2. The first packed bed 24 is preferably formed so as to reach the upper end of the turf leaf 21 because there is a concern that 3 may slip and be easily displaced. In addition, since the first filling layer 24 is formed so as to reach the upper end of the turf leaf 21, the first filling layer 24 is formed in a thickness corresponding to the length of the turf leaf 21. The thickness of 24 can be easily formed as a whole, and the second artificial lawn 3 above can be made beautiful.

In this embodiment, the grass 21 of the first artificial lawn 2 is formed of split yarn. However, the present invention is not limited to this, and a film slit from the beginning to the width of the grass without forming a split. It may be formed by a slit yarn having a shape, or may be formed by a monofilament yarn extruded into a cross-sectional shape other than the film shape. However, the turf leaf 21 mainly suppresses the lateral movement of the granular material of the first packed bed 24 provided therebetween, and this function can be expected as the width of the turf leaf 21 increases. It is preferable that the turf leaf can be formed more easily, and the turf leaf 21 is preferably formed of split yarn.
In the present embodiment, the turf leaves 21 are made of polypropylene, but the present invention is not limited to this, and other appropriate synthetic resin materials such as olefin synthetic resins such as polyethylene, polyamide, polyvinylidene chloride, and polyester are used. It can be used suitably.

  In the present embodiment, the first packed bed 24 and the second packed bed 34 are each formed only of silica sand. However, the present invention is not limited to this, and sand such as river sand and mountain sand, calcium carbonate In addition, inorganic granular materials such as glass, and hard granular materials such as artificial sand and synthetic resin can be used as appropriate alone or in combination. In each packed bed, not only the above hard granular material but also a natural or synthetic rubber chip, foamed or non-foamed synthetic resin granular material, cork chip, tire pulverized material, etc. are used alone or in combination. However, if each filling layer has elasticity, there is a concern that the throwing tool may repel and bounce when it drops onto the filling layer and may be displaced from the dropping position. For this reason, each packed bed is preferably formed mainly of hard granular materials, and more preferably formed only of hard granular materials.

In the present embodiment, the lawn leaf 31 of the second artificial lawn 3 is formed of a monofilament yarn. However, the present invention is not limited to this, and a split yarn or a slit yarn may be formed alone or in combination. However, the turf leaf 31 protrudes from the upper surface of the second filling layer 34 and becomes an important element constituting the appearance of the artificial lawn, and is also an element that directly touches the athlete, so it can be formed with a higher design and touch. Monofilament yarns or slit yarns are preferably used.
Further, in this embodiment, the turf leaves 31 are formed of polyethylene, but the present invention is not limited thereto, and other appropriate synthetic resin materials such as olefin synthetic resins such as polypropylene, polyamide, polyvinylidene chloride, and polyester are used. It can be used suitably.

  In the present embodiment, a plain woven fabric made of polypropylene is used for the base cloth 22 of the first artificial lawn 2 and the base cloth 32 of the second artificial lawn 3, respectively. If possible, it is not limited to this. For example, the material and weaving method such as a woven fabric made of polyethylene may be changed, a non-woven fabric or the like may be used, and other sheet bodies may be used.

In addition, since the second artificial lawn 3 is laid on the upper surface of the first artificial lawn 2 and the throwing equipment for the throwing competition is stopped at each of the packed layers provided on each, the artificial lawn is When aged or damaged, leave the first artificial lawn 2 below, remove only the second artificial lawn 3 above, replace it with a new one, and continue using the artificial lawn. can do. Thus, it is preferable because maintenance can be performed by replacing only a smaller number of members without replacing all of the artificial lawn provided above the base layer.
In this embodiment, the first artificial lawn 2 and the second artificial lawn 3 constitute the artificial lawn laying structure of the present invention. If necessary, a new one is provided below the first artificial lawn 2. An artificial lawn may be further laid.

  In addition, since the second artificial lawn 3 is laid on the upper surface of the first artificial lawn 2, the insertion of the throwing tool is stopped at the first filling layer 24 and the second filling layer 34, respectively. Compared with the case where only the second artificial lawn is laid, the thickness of the second packed bed 34 can be reduced, and the length of the turf leaf 31 of the second artificial lawn 3 can be reduced. By making the length of the turf leaf 31 shorter, even when the turf leaf 31 is inclined and erected obliquely above the base cloth 32, the variation in height to the upper end of the turf leaf 31 is smaller. Since it can be made into a thing, the upper end of the turf leaf 31 is embed | buried under the 2nd filling layer 34, and the problem of impairing the beauty | look of the 2nd artificial lawn 3 can be suppressed. In addition, by forming the turf leaf 31 to be shorter, the turf leaf 31 planting position on the base fabric 32 can be achieved even when the turf leaf 31 is erected obliquely above the base fabric 32. Since the horizontal displacement between the turf leaves and the upper end of the turf leaves 31 is made smaller, the arrangement of the turf leaves 31 protruding from the upper surface of the second packed bed 34 is closer to the planting position. As a result, the beauty of the second artificial lawn 3 can be improved.

  In addition, since the second artificial lawn 3 is laid on the upper surface of the first artificial lawn 2, the insertion of the throwing tool is stopped at the first filling layer 24 and the second filling layer 34, respectively. Even if there is unevenness in the foundation layer 1, this can be corrected when the first artificial lawn 2 is laid, so compared to the case where only the second artificial lawn 3 is laid on the foundation layer 1 The unevenness can be easily corrected, and the appearance of the second artificial lawn 3 can be improved.

FIG. 2 is a cross-sectional view showing another embodiment of the artificial lawn laying structure according to the present invention.
In the present embodiment, the second packed bed 34 provided on the second artificial lawn 3 is provided with a surface layer 34c formed of a granular material having elasticity on the upper surface of the upper layer 34b as shown in FIG. This is different from the embodiment.
In throwing competitions, it is desirable that the second filling layer 34 and the first filling layer 24 have no elasticity, but in a stadium where soccer and other competitions are also performed, they directly contact the athlete. It is preferable to give elasticity to the uppermost filling layer to reduce the possibility that the athlete will fall down and be scratched.

  In the present embodiment, the surface layer 34c is formed on the upper layer 34b of the second filling layer 34 by filling a pulverized tire with a thickness of 5 mm. The elastic granular material constituting the surface layer 34c is not limited to this, and a granular material having elasticity such as a natural or synthetic rubber chip, a foamed or non-foamed synthetic resin granular material, a cork chip, a tire pulverized material, etc. Or they may be used in combination. The granular material constituting the surface layer 34c may contain hard granular material, but from the viewpoint of protection of the athlete, it is preferable to form the granular material having elasticity mainly, and only the granular material having elasticity is formed. More preferably.

  In the present embodiment, the surface layer 34c is formed to a thickness of 5 mm, but the present invention is not limited to this, and the thickness may be appropriately adjusted. However, the surface layer 34c is desirably formed to such an extent that the throwing tool is not bounced, and is preferably formed to a thickness of 10 mm or less.

DESCRIPTION OF SYMBOLS 1 Base layer 2 1st artificial lawn 21 Turf leaf 22 Base cloth 23 Backing material 24 1st filling layer 3 2nd artificial lawn 31 Turf leaf 32 Base cloth 33 Backing material 34 2nd filling layer

Claims (2)

A plurality of artificial turf having a base fabric, a plurality of turf leaves planted on the base fabric, and a packed bed formed by filling a granular material between the planted portions of the turf leaves The artificial grass laying structure, wherein the first artificial grass is laid above the base layer, and the first artificial grass has a thickness that reaches the upper end of the planted turf leaves. A layer is provided, and a second artificial lawn having a second filling layer formed to a thickness greater than that of the first filling layer is laid on the upper surface of the first artificial lawn,
The first filling layer is formed with a thickness of 15 mm or more and 30 mm or less,
The second filling layer is formed with a thickness of 40 mm or more and 110 mm or less,
An artificial lawn laying structure characterized in that insertion of a throwing tool for a throwing game is stopped at the first filling layer and the second filling layer, respectively, even in a throwing game.   The artificial lawn laying structure according to claim 1, wherein a surface layer including a granular material having elasticity is formed on an uppermost surface of the second packed bed.

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