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JPS5996308A - Athletic field made of artificial turf - Google Patents

Athletic field made of artificial turf

Info

Publication number
JPS5996308A
JPS5996308A JP20733082A JP20733082A JPS5996308A JP S5996308 A JPS5996308 A JP S5996308A JP 20733082 A JP20733082 A JP 20733082A JP 20733082 A JP20733082 A JP 20733082A JP S5996308 A JPS5996308 A JP S5996308A
Authority
JP
Japan
Prior art keywords
sand
artificial
layer
artificial lawn
ground
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20733082A
Other languages
Japanese (ja)
Other versions
JPH0216404B2 (en
Inventor
古川 源蔵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Nisshoku Corp
Original Assignee
Sumitomo Rubber Industries Ltd
Nisshoku Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Rubber Industries Ltd, Nisshoku Corp filed Critical Sumitomo Rubber Industries Ltd
Priority to JP20733082A priority Critical patent/JPS5996308A/en
Publication of JPS5996308A publication Critical patent/JPS5996308A/en
Publication of JPH0216404B2 publication Critical patent/JPH0216404B2/ja
Granted legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は、人工芝生製運動競技場、より詳しくは人工芝
生内に乾燥砂を充填してなる人工芝生製運動競技場に関
する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an athletic field made of artificial turf, and more particularly to an athletic field made of artificial turf, which is formed by filling the artificial turf with dry sand.

一般に、人工芝生はポリアミド、アクリル、塩化ビニリ
デン、もしくはポリプロピレン等の合成樹脂から作られ
た扁平なパイル糸を、たとえば裏打ち基布に種々の方法
で植毛したものからなる。そして、そのパイル長や芝目
密度は適用される競技場、例えばテニスコートやす・ツ
カー場等に応じて若干具なるが、長さは大体において7
〜12mm前後である。この人工芝生は、天然芝生に比
べて耐久性がよく、しかも保守管理が容易であることか
ら近年急速に普及しているが、特性的にも、また施工す
るうえにおいても未だ解決すべき課題が残されている。
Generally, artificial lawns are made of flat pile threads made from synthetic resins such as polyamide, acrylic, vinylidene chloride, or polypropylene, which are grafted onto a backing fabric using various methods. The pile length and turf density will vary slightly depending on the playing field to which it is applied, such as a tennis court, turf field, etc., but the length is generally 7.
It is around 12 mm. Artificial lawns have become rapidly popular in recent years because they are more durable and easier to maintain than natural lawns, but there are still issues that need to be resolved in terms of their characteristics and construction. left behind.

先行例によれば、人工芝生の芝目内に乾燥された砂(鉱
物粒子)を充填することにより、その特性を天然芝生に
より近似させ得ることが報告されている。この乾燥砂に
よって人工芝生の緩衝能力やスパイクの引掛り防止能力
はある程度満足されるが、次の点に留意する必要がある
According to previous examples, it has been reported that by filling the grains of an artificial lawn with dried sand (mineral particles), the characteristics of the artificial lawn can be made to more closely resemble those of a natural lawn. Although this dry sand satisfies the buffering capacity of the artificial lawn and the ability to prevent spikes from getting caught, the following points must be kept in mind.

すなわち、この砂層の水分保持能力を高めるには粒径が
細かいほどよいのであるが、余り細かい砂を用いると、
経時的に固まって適度のクッション性が損なわれる詐り
でなく、砂入れ作業のとき、もしくは施工後にその砂が
風によって舞い上げられてしまうため、労働安全衛生お
よび環境衛生上好ましくない。このダスト発生は特にイ
ンドアコートの場合に問題とされる。このため、従来で
は充坩された砂層の上から土壌固定剤を撒布してその表
面を固めたり、砂の粒径をある程度に抑えて、その代わ
りにバーミュキュライトや塩化カルシウム等の水分保持
材料を混入したりしている。
In other words, in order to increase the water retention capacity of this sand layer, the finer the grain size, the better; however, if too fine sand is used,
Not only does it harden over time and lose its proper cushioning properties, but the sand gets blown up by the wind during or after sanding, which is unfavorable in terms of occupational safety and health and environmental health. This dust generation is particularly problematic in indoor courts. For this reason, in the past, soil fixatives were sprinkled on top of the filled sand layer to harden the surface, or the particle size of the sand was kept to a certain level, and moisture retaining agents such as vermiculite or calcium chloride were used instead. Some ingredients are mixed in.

しかし、土壌固定剤による方法では余り永続性がなく、
保守管理の面でも煩わしく、またコスト的にも好ましく
ない。他方、水分保持材料に関していえば、それを砂層
内に混入するにはそれなりの手間がかかり、また、前者
と同様にコスト上の問題が残されている。
However, methods using soil fixatives are not very permanent;
This is troublesome in terms of maintenance and management, and is also undesirable in terms of cost. On the other hand, as for the moisture retaining material, mixing it into the sand layer requires a certain amount of effort, and like the former, cost problems remain.

したがって、本発明の目的は、緩衝能力およびスパイク
の引掛り防止能力はもとより、採水能力においても天然
芝生により近似した特性を有するとともに、降雨後の保
守管理が簡単でかつ平坦な競技場表面の施工が容易であ
り、しかも風等によるダスト発生が極めて少ない砂層を
備えた人工芝生製運動競技場を提供することにある。
Therefore, the object of the present invention is to provide a flat stadium surface that has characteristics similar to natural grass in terms of buffering capacity and ability to prevent spikes from getting caught, as well as water absorption capacity, and which is easy to maintain after rain. To provide an artificial grass athletic field that is easy to construct and has a sand layer that generates extremely little dust due to wind or the like.

上記した目的は、まづ第1に、人工芝生の芝目内の下方
に細かい乾燥砂からなる下層を形成し、その上に粗い乾
燥砂を充填して積層することにより達成される。この場
合、細かい乾燥砂は、100メツシユないし28メソシ
ユの粒度のものを、好ましくは80%以上含み、粗い乾
燥砂は70メソシユないし14メソシユのものを、好ま
しくは80%以上含んでいる。
The above object is achieved by first forming a lower layer of fine dry sand below the grain of the artificial lawn, and filling and layering coarse dry sand on top of the lower layer. In this case, the fine dry sand preferably contains 80% or more of a particle size of 100 mesh to 28 mesh, and the coarse dry sand preferably contains 80% or more of a particle size of 70 mesh to 14 mesh.

さらに本発明によれば、人工芝生を敷設する下方の地盤
は砕石、火山砂利または/および砂からなる透水性とさ
れるとともに、その上面に例えばポリプロピレン、ポリ
アミド、ポリエステル等の合成繊維を用いて、スパンボ
ンド法やニードルパンチ法等により形成された嵩高なフ
ェルト状の不織布シートが敷き延べられて、実質的に平
に形成される。
Further, according to the present invention, the ground below where the artificial lawn is laid is made of crushed stone, volcanic gravel, or/and sand and is made of water permeable material, and the upper surface thereof is made of synthetic fibers such as polypropylene, polyamide, polyester, etc. A bulky felt-like nonwoven fabric sheet formed by a spunbond method, a needle punch method, or the like is spread to form a substantially flat sheet.

このように形成された本発明における透水性地盤は、そ
の上表面を構成する個々の砕石等の相互間に形成されて
いる凹所を前記不織布により埋められると共に、各砕石
等の突縁部と前記不織布との絡みにより各砕石等の転勤
を抑止され、その結果、平坦で確固たる地盤として構築
される。
In the permeable ground of the present invention formed in this way, the recesses formed between the individual crushed stones, etc. constituting the upper surface thereof are filled with the nonwoven fabric, and the ridges of each crushed stone, etc. The intertwining with the nonwoven fabric prevents each crushed stone from moving, and as a result, it is constructed as a flat and firm ground.

以下、本発明の実施例を添付図面を参照しながら詳細に
説明する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

この運動競技場は、上面が実質的に平に仕上げられた地
盤(11と、この地盤(1)上に敷設された人工芝生(
2)と、この人工芝生(2)の芝目内に充填された乾燥
砂(3)とを備えている。本例においては、地盤(1)
は安定処理された砕石、火山砂利または/および砂から
なる。すなわち、前記砕石等に例えばセメントや生石灰
のような安定化剤を混入し、必要に応じて水分供与剤と
しての粘土を適量加えたのち敷き均らし、表面を転圧し
て、または転圧しないで概ね平坦に均らす。ただし、地
盤(1)は、完成後上方から加えられる荷重に対して充
分な支持力を持たせるため、通常25mm程度の粒度の
前記砕石等で構成されるので、その上面は凹凸となって
おり、かつ砕石相互間には隙間が多く不安定である。
This athletic field consists of a ground (11) whose upper surface is finished substantially flat and an artificial lawn (1) laid on this ground (1).
2) and dry sand (3) filled into the grass grains of this artificial lawn (2). In this example, the ground (1)
consists of stabilized crushed stone, volcanic gravel or/and sand. That is, a stabilizer such as cement or quicklime is mixed into the crushed stone, etc., and an appropriate amount of clay as a moisture donor is added as needed, and then it is spread evenly and the surface is compacted or not compacted. Level it roughly evenly. However, the ground (1) is usually made of the above-mentioned crushed stone with a particle size of about 25 mm in order to have sufficient support capacity against the load applied from above after completion, so its upper surface is uneven. , and there are many gaps between the crushed stones, making it unstable.

したがって本例では、地盤(1)の表面にポリプ・ ロ
ピレンよりなるフェルト状の不織布シート(4)が敷き
延べられて、実質的に平に形成される。
Therefore, in this example, a felt-like nonwoven fabric sheet (4) made of polypropylene is spread on the surface of the ground (1) to form a substantially flat surface.

この不織布シート(4)の敷設により、比較的大径で表
面凹凸の多い砕石等を敷き均らしただけであるために砕
石相互間に隙間が多く、かつ安定性に欠ける地盤(1)
の上表面が平坦化され、かつ安定化されるので、人工芝
生をより平坦に安定して敷設することができる。
By laying this non-woven fabric sheet (4), the ground (1), which has a relatively large diameter and an uneven surface, is created by simply spreading crushed stones, etc., which has many gaps between the crushed stones and lacks stability.
Since the upper surface of the lawn is flattened and stabilized, the artificial lawn can be laid more evenly and stably.

人工芝生(2)は、裏打ち基布(5)と、この基布(5
)に植設されたパイル糸(6)とからなる。この場合基
布(5)は、地盤(1)が安定処理された砕石、火山砂
利または/および砂からなるものであり、雨水の浸透に
よりその安定性が損なわれて軟弱化されるのを防止する
ため、非透水性になされている。この非透水性は、例え
ばゴムやウレタン樹脂を基布(5)にバンキングするこ
とにより得られる。
The artificial lawn (2) consists of a lining base fabric (5) and this base fabric (5).
) and a pile yarn (6) planted in the pile yarn (6). In this case, the base fabric (5) is made of crushed stone, volcanic gravel, or/and sand that has been treated to stabilize the ground (1), and prevents its stability from being compromised and weakened by rainwater penetration. Therefore, it is made non-water permeable. This water impermeability can be obtained, for example, by banking rubber or urethane resin on the base fabric (5).

パイル糸(6)は、種々の合成樹脂からつくることがで
きるが、外観、風合いの面で天然芝生により類似し、か
つ、耐久性を考慮すると、ポリアミド、ポリエチレンテ
レフタレート、ポリウレタン、ポリ塩化ビニリデン、ポ
リプロピレン、もしくはアクリル系樹脂が好ましく、そ
れらの樹脂のフィルムを細切りしてなるスリットヤーン
、または熔融紡糸により異形断面孔を有するノズルを通
して形成された扁平糸からつくられている。この人工芝
生(2)は、テニスコート、サッカー場、もしくは野球
場等において従来の天然芝生の代わりに用いられている
ことを考慮すると、そのパイル長は10mmないし40
a+mであることが好ましい。なお、此の発明によると
、上記乾燥砂(3)は、基布(5)上に充堺された細か
い砂からなる下N(7)と、その上に積層された粗い砂
からなる上層(8)との2層構造からなる。此の場合細
かい砂とは、粒度が100メンシユないし2日メソシュ
(約0.15mmないし約0.6mm )の砂を、好ま
しくは80%以上含むものと定義され、他方、粗い砂と
は、粒度70メツシユないし14メソシユ(約0.21
mmないし約1.2mm )の砂を、好ましくは80%
以上含むものと定義される。この乾燥砂(3)は人工芝
生(2)上に撒布されることによりその芝目内に充堤さ
れるのであるが、前記粒度が100メソシユより細かい
と、競技者の踏圧によってi余々に搗き固められる傾向
にあり、また、多分にタストとして舞い上がってしまう
虞れがあり、特にインドアー施設の場合、労働安全衛生
上また環境衛生上好ましくない。この点に鑑みこの発明
では、下層に用いられる細かい砂の粒度を上記した範囲
内とし、これにより風の摩擦速度が秒速15cm (地
上での風速は秒速約4mに相当する)程度ではパイル糸
(6)の砂防作用と相俟って殆ど吹き飛ばされることが
なく、したがって特に施工時のダスト分発生がきわめて
少ない。さらに、その粒度との関係からして保水能力お
よび排水性ともにある程度満足する結果が得られ、従来
のようにバーミュキュライトや塩化カルシウム等の水分
保持材料を混入しなくともそれにほぼ匹敵する良好な保
水能力が示される。また、細かい砂からなる下層の上に
上記した粒度範囲の粗い砂が積層されているため、全体
としても風による影響で吹き飛ばされてしまう虞れは殆
どない。
The pile yarn (6) can be made from various synthetic resins, but in terms of appearance and texture, it is more similar to natural grass, and in terms of durability, polyamide, polyethylene terephthalate, polyurethane, polyvinylidene chloride, polypropylene, etc. or an acrylic resin is preferable, and is made from a slit yarn obtained by cutting a film of these resins into pieces, or a flat yarn formed by melt spinning through a nozzle having irregular cross-sectional holes. Considering that this artificial grass (2) is used in place of conventional natural grass in tennis courts, soccer fields, baseball fields, etc., its pile length is between 10 mm and 40 mm.
Preferably, a+m. According to this invention, the dry sand (3) has a lower layer (7) made of fine sand filled on the base fabric (5) and an upper layer (7) made of coarse sand layered thereon. It consists of a two-layer structure with 8). In this case, fine sand is defined as containing preferably 80% or more of sand with a grain size of 100 to 2 days (approximately 0.15 mm to approximately 0.6 mm), while coarse sand is defined as having a grain size of 70 mesh to 14 mesh (approx. 0.21
mm to about 1.2 mm), preferably 80%
It is defined as including the above. This dry sand (3) is spread on the artificial lawn (2) to fill the turf within its grain, but if the particle size is finer than 100 mS, it will be too much due to the pressure of the competitors. It tends to harden and harden, and there is a risk that it will rise as dust, which is unfavorable from the standpoint of occupational safety and health as well as environmental health, especially in indoor facilities. In view of this, in this invention, the grain size of the fine sand used in the lower layer is within the above range, so that when the wind friction speed is about 15 cm per second (corresponding to the wind speed on the ground of about 4 m per second), the pile yarn ( Coupled with the erosion control effect in 6), there is almost no blowing away, and therefore the amount of dust generated during construction is extremely small. Furthermore, considering the relationship with the particle size, the water retention capacity and drainage performance were both satisfactory to some extent, and the results were almost comparable to those of conventional methods, even without the addition of moisture retention materials such as vermiculite and calcium chloride. water retention capacity is shown. Furthermore, since the coarse sand having the particle size range described above is layered on the lower layer of fine sand, there is almost no risk that the entire layer will be blown away by the influence of the wind.

他方、下層(7)および上層(8)を含めた乾燥砂(3
)の層厚は、パイル糸(6)の長さの約70%ないし1
10%が適当である。なお、この数値は施工完了時のも
のであって、実際には降雨や踏圧によって経時的にその
レベルが下がりほぼ1ケ月位で安定する。しかして、そ
の層厚は例えばボールのバウンド特性や人工芝生が呈す
る美観等Gこ関連して選択される。すなわち、パイル糸
(6)の先端が隠れる位まで砂を多く入れると、)<イ
ル糸(6)が直立し、かつ、剛直となるのでボールのノ
\ウンドが高くなるとともに、耐久性は向上するが、反
面、人工芝生(2)が有する緑色が余り目立たなくなり
美観的には若干化ることになる。
On the other hand, dry sand (3) including the lower layer (7) and the upper layer (8)
) has a layer thickness of about 70% to 1 of the length of the pile yarn (6).
10% is appropriate. Note that this value is based on the time of completion of construction, and in reality, the level decreases over time due to rainfall and tread pressure, and stabilizes after about a month. The layer thickness is selected in consideration of, for example, the bouncing characteristics of the ball and the aesthetic appearance of the artificial lawn. In other words, if you add enough sand to cover the tip of the pile yarn (6), the pile yarn (6) will stand upright and become rigid, increasing the ball's pitch and improving its durability. However, on the other hand, the green color of the artificial lawn (2) becomes less conspicuous and the aesthetic appearance is slightly different.

他方、砂(3)を少な(してパイル糸(6)の先端を多
く砂層の上面から突出させるようにすると、競技面がよ
り柔軟になり、ボールのノ\ウンドが低くなる。また、
人工芝生(2)の緑色が目立ち美観的には好ましくなる
が、反対にパイル糸(6)の摩耗が早められることにな
る。なお、下層(7)と上層(8)との層厚の比は保水
性等を勘案して適当に決められる。
On the other hand, if the amount of sand (3) is reduced so that more of the tips of the pile threads (6) protrude from the top surface of the sand layer, the playing surface will become more flexible and the ball's pitch will be lower.
Although the green color of the artificial lawn (2) stands out and is aesthetically pleasing, on the contrary, the pile yarn (6) wears out more quickly. Note that the ratio of the layer thicknesses of the lower layer (7) and the upper layer (8) can be appropriately determined by taking into consideration water retention and the like.

上記した実施例の説明から明らかなように、この発明に
よれば、基盤が砕石、火山砂利や砂等により透水性構造
につくられ、しかも人工芝生の芝目内に多量の砂を充填
されているので、比較的多量の降雨があっても水捌けが
良く、降雨時の保守管理の手間が著しく軽減される上、
砕石、火山砂利、砂等の入手し易い材料で地盤を形成す
るので、従来のクレーコートやアンツーカコートを全天
候性コートに改造する場合にアスファルト地盤のものと
比べて、より廉価、かつ容易に構築できる。しかも、砕
石等のごとく比較的尖鋭な突縁を有し、表面凹凸の多い
材料により構成される上記地盤の上面は、人工芝生の敷
設に先立って、嵩高な不織布シートにより平滑化され、
かつ前記砕石価々の転勤が抑止されて、平坦で確固たる
地盤として構築される。
As is clear from the above description of the embodiments, according to the present invention, the base is made of crushed stone, volcanic gravel, sand, etc. to have a water-permeable structure, and moreover, the grass grains of the artificial lawn are filled with a large amount of sand. Because of this, water drainage is good even when there is a relatively large amount of rainfall, and maintenance work during rainy periods is significantly reduced.
Because the ground is formed from easily available materials such as crushed stone, volcanic gravel, and sand, it is cheaper and easier to construct than asphalt ground when converting a conventional clay court or Antuca court into an all-weather court. can. Moreover, the upper surface of the ground, which is made of a material with relatively sharp edges and many surface irregularities, such as crushed stone, is smoothed with a bulky non-woven fabric sheet before the artificial lawn is laid.
In addition, the transfer of the crushed stones is suppressed, and the ground is constructed as a flat and firm ground.

このことは、外観上および寸法上安定した人工芝生性運
動競技場が得られることを意味する。
This means that an aesthetically and dimensionally stable artificial grass sports field is obtained.

さらに、この発明によれば、人工芝生の芝目すなわちパ
イル糸間に、100メソシユ〜28メツシユの範囲内に
ある砂を80%以上含む細かい砂からなる下層と、70
メツシユ〜14メツシユの範囲内にある砂を80%以上
含む粗い砂からなる上層とを積層するようにしたことに
より、人工芝生上に砂を撒布してその芝目内に充填する
にあたって、砂の飛散する量が少なく、労働安全衛生上
の問題を惹き起こす虞れは殆どない。また下層の細かい
砂は上層の粗い砂によって押さえられるため、殊更従来
のように砂の飛散を防止するための土壌固定剤を砂層に
撒布してその表面を固めなくともよい。さらに、保水能
力についても良好な値を示すため、パーミュキュライト
や塩化カルシウム等の水分保持材料を混入する必要もな
い。したがって、施工しやすくコスト的にも有利である
Further, according to the present invention, a lower layer of fine sand containing 80% or more of sand in the range of 100 to 28 mesh is formed between the grains of the artificial lawn, that is, between the pile threads;
By layering the upper layer of coarse sand containing 80% or more of sand within the range of 14 mesh to 14 mesh, it is possible to spread the sand onto the artificial lawn and fill it into the grass grains. The amount of scattering is small, and there is almost no risk of causing occupational safety and health problems. In addition, since the fine sand in the lower layer is held down by the coarse sand in the upper layer, there is no need to spread a soil fixing agent on the sand layer to harden the surface of the sand layer in order to prevent the sand from scattering as in the conventional method. Furthermore, since it exhibits a good value for water retention capacity, there is no need to mix water retention materials such as permiculite or calcium chloride. Therefore, it is easy to construct and is advantageous in terms of cost.

【図面の簡単な説明】[Brief explanation of the drawing]

図はこの発明による人工芝生製運動競技場の一部分を示
した断面図である。 図中、1は地盤、2は人工芝生、3は乾燥砂4はスラグ
ダスト等及び土壌固定剤からなる層5は裏打ち基布、6
はパイル糸、7は下層、8は上層である。 特許出願人  住友ゴム工業株式会社
The figure is a cross-sectional view showing a portion of an athletic field made of artificial grass according to the present invention. In the figure, 1 is the ground, 2 is artificial grass, 3 is dry sand 4 is a layer 5 consisting of slag dust etc. and soil fixative, lining base fabric, 6
is a pile yarn, 7 is a lower layer, and 8 is an upper layer. Patent applicant: Sumitomo Rubber Industries, Ltd.

Claims (2)

【特許請求の範囲】[Claims] (1)砕石および/または砂よりなり、上面が実質的に
平に形成されてなる透水性地盤と、該地盤上に敷設され
た人工芝生であって、基布と該基布に植設された10m
mないし40mmの範囲の長さを有するパイル糸とから
なる前記人工芝生と、前記パイル長の70%ないし11
0%の厚みをもって前記人工芝生に充填された乾燥砂と
を含み、前記乾燥砂は、前記基布上に積層された綱かい
砂からなる下層と、該下層の上に積層された粗い砂より
なる上層との2層構造からなる人工芝生製運動競技場で
あって、前記透水性地盤の上面は、嵩高な不織布シート
を敷き延べられて実質的に平に形成されていることを特
徴とする人工芝生製運動競技場。
(1) A permeable ground made of crushed stone and/or sand with a substantially flat upper surface, an artificial lawn laid on the ground, and a base fabric and an artificial lawn planted on the base fabric. 10m
said artificial lawn consisting of pile threads having a length in the range of from 70 mm to 40 mm, and from 70% to 11% of said pile length;
The artificial lawn is filled with dry sand with a thickness of 0%, and the dry sand is thicker than a lower layer of rope sand layered on the base fabric and coarse sand layered on the lower layer. The artificial turf sports stadium has a two-layer structure with an upper layer consisting of an upper layer, and the upper surface of the permeable ground is formed substantially flat by spreading a bulky nonwoven fabric sheet. Artificial grass sports field.
(2)  人工芝生に充填された2層構造の乾燥砂の下
層には、粒度が100メンシユないし28メソシユの範
囲内にある砂が80%以上含まれ、前記乾燥砂の上層に
は、粒度が70メソシユないし14メソシユの範囲内に
ある砂が80%以上含まれている特許請求の範囲第(1
)項記載の人工芝生製運動競技場。
(2) The lower layer of the two-layered dry sand filled in the artificial lawn contains 80% or more of sand with a particle size in the range of 100 to 28 mm, and the upper layer of the dry sand has a particle size of 100 mm to 28 mm. Claim No. 1 containing 80% or more of sand in the range of 70 mesoyu to 14 mesoyu
) An athletic field made of artificial grass as described in item 2.
JP20733082A 1982-11-25 1982-11-25 Athletic field made of artificial turf Granted JPS5996308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20733082A JPS5996308A (en) 1982-11-25 1982-11-25 Athletic field made of artificial turf

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20733082A JPS5996308A (en) 1982-11-25 1982-11-25 Athletic field made of artificial turf

Publications (2)

Publication Number Publication Date
JPS5996308A true JPS5996308A (en) 1984-06-02
JPH0216404B2 JPH0216404B2 (en) 1990-04-17

Family

ID=16537961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20733082A Granted JPS5996308A (en) 1982-11-25 1982-11-25 Athletic field made of artificial turf

Country Status (1)

Country Link
JP (1) JPS5996308A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002339312A (en) * 2001-05-21 2002-11-27 Toray Ind Inc Artificial lawn for wettable artificial lawn ground
JP2006144546A (en) * 1997-03-10 2006-06-08 Fieldturf (Ip) Inc Artificial turf

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006144546A (en) * 1997-03-10 2006-06-08 Fieldturf (Ip) Inc Artificial turf
JP4686368B2 (en) * 1997-03-10 2011-05-25 フィールドターフ ターケット インコーポレイテッド Artificial grass surface layer
JP2002339312A (en) * 2001-05-21 2002-11-27 Toray Ind Inc Artificial lawn for wettable artificial lawn ground

Also Published As

Publication number Publication date
JPH0216404B2 (en) 1990-04-17

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