JP2582946B2 - Artificial turf with granular material - Google Patents
Artificial turf with granular materialInfo
- Publication number
- JP2582946B2 JP2582946B2 JP3061773A JP6177391A JP2582946B2 JP 2582946 B2 JP2582946 B2 JP 2582946B2 JP 3061773 A JP3061773 A JP 3061773A JP 6177391 A JP6177391 A JP 6177391A JP 2582946 B2 JP2582946 B2 JP 2582946B2
- Authority
- JP
- Japan
- Prior art keywords
- granular material
- artificial turf
- thread
- dimensional
- filled
- 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.)
- Expired - Fee Related
Links
Landscapes
- Road Paving Structures (AREA)
Description
【０００１】[0001]
【産業上の利用分野】 本発明は例えばテニスコートや
野球場、あるいはゴルフ場等の各種運動場に用いるのに
適した粒状体入りの人工芝に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial turf containing a granular material suitable for use in various sports fields such as a tennis court, a baseball stadium, and a golf course.
【０００２】[0002]
【従来の技術】 ポリアミドやポリ塩化ビニリデン等の
合成樹脂繊維糸を織布に植付け加工し、その裏面から合
成ゴム等でパイル止め加工した人工芝を用いて、例えば
テニスコートやゴルフ場ないしは野球場等に使用する場
合、その芝目内に砂をはじめとする粒状体を充填するこ
とにより、緩衝性能やスパイク等の引っ掛かりをできる
だけ天然芝に近似させ得ることが知られている。2. Description of the Related Art Synthetic resin fiber yarns such as polyamide and polyvinylidene chloride are planted in a woven fabric, and the back surface thereof is piled with synthetic rubber or the like to use an artificial turf, for example, a tennis court, golf course or baseball field. It is known that, when used for such purposes, by filling the grass with a granular material such as sand, the buffering performance and catching of spikes and the like can be made as close as possible to natural grass.
【０００３】このような砂等の粒状体入りの人工芝にお
いて、直立した人工芝葉を用いた場合には、経時的な粒
状体の移動による凹凸の発生、あるいは砂等の粒状体の
固化による弾性力の低下等が見られるという問題があっ
た。この問題を解決するため、従来、例えば特開昭５９
−２４００７号等において提案されているように、偏平
な人工芝の芝葉の先端をヒーターローラー等を用いて図
４に例示するように下方にカールさせる、あるいはニッ
トデニット法等によって図５に例示するように３次元状
にカールさせる等の対策がなされている。[0003] In such artificial turf containing sand or other granular material, when upright artificial turf leaves are used, unevenness occurs due to the movement of the granular material over time, or solidification of the granular material such as sand. There has been a problem that the elastic force is reduced. In order to solve this problem, conventionally, for example,
As proposed in US Pat. No. 24007 or the like, the tip of flat artificial grass is curled downward using a heater roller or the like as illustrated in FIG. Measures such as curling in three dimensions are taken as exemplified.
【０００４】[0004]
【発明が解決しようとする課題】 ところで、人工芝の
芝葉の先端を下方にカールさせ、あるいは３次元状にカ
ールさせた場合、以下に示すような問題点が生じる。第
一に、砂等の粒状体を芝葉内に充填していく場合、散布
された粒状体が芝葉の内部にうまく入り込まず、充填作
業の能率が極めて困難である。However, when the tip of the artificial grass is curled downward or three-dimensionally, the following problems occur. First, when the granular material such as sand is filled into the lawn leaf, the dispersed granular material does not enter the lawn leaf well, and the efficiency of the filling operation is extremely difficult.
【０００５】第二に、粒状体の充填当初はさほどでもな
いものの、長期間の経過により、粒状体の流出とともに
充填された粒状体層の厚さの減少が大きいことが判明し
た。これは、粒状体散布時のブラシングにより、カール
した芝葉が伸ばされ、当初はその間に粒状体が充填され
るが、時間の経過とともに雨等の影響も受け、芝葉の復
原力も加えられるため、厚さが次第に減少し、例えば芝
葉のみによる厚さ２５ｍｍに対して粒状体を２２ｍｍま
で充填したものが、約一年の経過により、厚さは１５ｍ
ｍにまで減少してしまった。Second, it has been found that, although not so much at the beginning of the filling of the granular material, the thickness of the filled granular material layer greatly decreases as the granular material flows out over a long period of time. This is because the curled turf leaf is stretched by brushing at the time of spraying the granular material, and the granular material is initially filled during that time, but it is affected by rain etc. over time and the stability of the turf leaf is added The thickness gradually decreases. For example, a material filled with granular materials up to 22 mm for a thickness of 25 mm made of only turf leaves has a thickness of 15 m after approximately one year.
m.
【０００６】本発明はこのような点に鑑みてなされたも
ので、砂等の粒状体の充填作業が容易で、しかも、長期
間の使用に対しても厚さの減少が少なく、施工当初の状
態を長期間にわたって維持することのできる粒状体入り
人工芝の提供を目的としている。[0006] The present invention has been made in view of such a point, the work of filling the granular material such as sand is easy, and the thickness of the material is less reduced even when used for a long time. An object of the present invention is to provide an artificial turf containing a granular material capable of maintaining a state for a long period of time.
【０００７】[0007]
【課題を解決するための手段】 上記の目的を達成する
ため、本発明の粒状体入り人工芝は、基布に複数本の糸
状物が植え付けられた人工芝の芝目内に、粒状体が充填
されてなる粒状体入り人工芝において、上記糸状物がそ
れぞれジグザグ状に捲縮され、上記基布上で各糸状物が
全体として３次元のジグザグ構造を形成していることに
よって特徴付けられる。ここで、本明細書で言う、糸状
物がジグザグ状に捲縮されているとは、糸状物が基布か
ら立ち上がった後、従来のカール状のもののように屈曲
しても下方には向かわず、基布から立ち上がった後に複
数回にわたって屈曲点を有するジグザグ状に屈曲して上
方に伸びたものを言い、また、１本の糸状物の屈曲の方
向は、２次元または３次元であって、基布上に植え付け
られた状態で上方から見たとき、複数本の糸状物が全体
として全方向に屈曲点を有するジグザグ状に屈曲した３
次元構造を採っていればいい。Means for Solving the Problems In order to achieve the above object, the artificial turf containing granular material of the present invention comprises a plurality of yarns on a base cloth.
Granules are filled in the artificial grass turf where the objects are planted
In the artificial turf containing granular material thus obtained, the above-mentioned filamentous material is
Is crimped respectively zigzag, each filamentous material on said base fabric is characterized by forming a three-dimensional zig-zag structure as a whole. Here, in the present specification, that the thread is crimped in a zigzag shape means that after the thread has risen from the base cloth, it does not face downward even if it is bent like a conventional curl. , Which means that it is bent in a zigzag shape having a bending point a plurality of times after rising from the base cloth and extends upward, and the direction of bending of one thread is two-dimensional or three-dimensional, When viewed from above while planted on the base cloth, a plurality of thread-like objects bent in a zigzag shape having bending points in all directions as a whole 3
It just needs to have a dimensional structure.
【０００８】[0008]
【作用】 糸状物の先端部分を下方にカールさせずに、
ジグザグ状とすることにより、砂等の粒状体の充填作業
が容易となり、短時間で多量の粒状体を充填することが
可能となる。また、ジグザグ状の糸状物は、糸状物が粒
状体中に立体的に介在して砂の移動を阻止するととも
に、弾性により砂等の粒状体が解されて固化されにくい
ばかりでなく、上からの力に対して抗力があり、長期間
の使用によっても厚さの減少は少ないことが実験によっ
て確認された。[Action] Without curling the tip of the thread downward,
The zigzag shape facilitates the filling operation of the granular material such as sand, and makes it possible to fill a large amount of the granular material in a short time. In addition, the zigzag thread-like material is not only hard to be solidified because the thread-like material is three-dimensionally interposed in the granular material to prevent the movement of sand, and the elasticity dissolves the granular material such as sand, and also from above. It has been confirmed through experiments that it has a resistance to the force of Example 1 and a small decrease in thickness even after long-term use.
【０００９】[0009]
【実施例】 図１は本発明実施例の一部分を示す縦断面
図である。本発明の人工芝本体１０は、ポリプロピレン
製等の基布１の表面に、偏平なポリアミドフィラメント
からなる複数本の糸状物２・・２が植え付け加工され、
基布１の裏面からゴムラテックス３でパイル止め加工さ
れて構成されている。この人工芝本体１０は、アスファ
ルト等の基盤Ｇ上に、例えばゴムチップ製シート等のク
ッション性を有する下地材Ｂを敷設した上方に敷かれ
る。そして、各糸状物２・・２間には、各糸状物２・・
２をブラシングしながら、１００メッシュ〜１４メッシ
ュの砂等の粒状体４を充填している。FIG. 1 is a longitudinal sectional view showing a part of an embodiment of the present invention. The artificial turf body 10 of the present invention is made of polypropylene.
A plurality of filaments 2 composed of flat polyamide filaments are planted on the surface of a base fabric 1 made of
The back surface of the base cloth 1 is piled with a rubber latex 3 so as to be configured. The artificial turf main body 10 is laid on a base G such as asphalt, on which a base material B having a cushioning property such as a rubber chip sheet is laid. And between each thread 2 ... 2, each thread 2 ...
While brushing 2, the granular material 4 such as sand of 100 mesh to 14 mesh is filled.
【００１０】人工芝本体１０の各糸状物２・・２は、図２
に示すように各屈曲部が９０°を越えない範囲でそれぞ
れ２次元または３次元のジグザグ状に捲縮されており、
基布１上には、図３に平面図を示すように、全体として
全方位にジグザグ状に屈曲して３次元状のジグザグ構造
となるように植え付けられている。このように各糸状物
２・・２をジグザグ状に捲縮させる方法としては、例えば
押し込み法が適している。Each filament 2 of the artificial turf body 10 is shown in FIG.
As shown in the figure, each bent portion is crimped into a two-dimensional or three-dimensional zigzag shape within a range not exceeding 90 °,
As shown in the plan view of FIG. 3, the base cloth 1 is planted so as to be bent in all directions in a zigzag manner to form a three-dimensional zigzag structure. As a method for crimping each of the filaments 2 in a zigzag shape, for example, an indentation method is suitable.
【００１１】以上の本発明実施例では、各糸状物の先端
を下方に向けてカールさせたものや、３次元状にカール
させたものに比して、粒状体の充填作業が容易で、糸状
物２・・２の長さを３０ｍｍ程度として、数％の捲縮率の
もので容易に３０ｋｇ／ｍ2 程度の粒状体を充填するこ
とができた。また、粒状体４の充填後の固さを比較する
ため、２ｍの高さより軟式野球ボールを落下させたとこ
ろ、約３５ｃｍの高さまで反発した。また、粒状体４内
に屈曲した糸状物２・・２が介在しているため、長期間使
用しても糸状物２・・２の弾性力により粒状体が解され、
固くなりにくく、クッション性が損なわれにくいことが
判明した。In the above-described embodiment of the present invention, the filling operation of the granular material is easier and the thread-like material can be easily formed as compared with the case where the tip of each filament is curled downward or the one which is curled three-dimensionally. With the length of the object 2... 2 being about 30 mm, a granular material of about 30 kg / m 2 could be easily filled with a crimp rate of several percent. Further, in order to compare the hardness of the granular material 4 after filling, when a soft baseball ball was dropped from a height of 2 m, it rebounded to a height of about 35 cm. In addition, since the bent filaments 2... 2 are interposed in the granules 4, the granules are disentangled by the elastic force of the filaments 2.
It turned out that it was hard to become hard and cushioning property was hard to be spoiled.
【００１２】これに対し、同様の構造で糸状物のみを真
直としたところ、２ｍの高さから落下させた軟式野球ボ
ールは５５ｃｍまで反発し、本発明実施例の方が当初か
らクッション性が良好なことが確認された。また、同様
の構造で、糸状物のみを、全長３２ｍｍでその先端部を
下方へカールさせた形状とすることにより２５ｍｍにし
たものを用いたところ、上記と同様の手法で粒状体を充
填したが、２０ｋｇ／ｍ2 しか充填できなかった。そし
て、軟式野球ボールの反発は、当初は本発明実施例と同
等であったが、約半年経過した状態では、粒状体層の厚
さが薄く、かつ、固くなって、同じく２ｍｍの高さから
落下させた軟式野球ボールは、５０ｃｍの高さまで反発
し、本発明実施例のものよりクッション性が極端に低下
していることが判明した。On the other hand, when only the thread-like material is straightened with the same structure, the soft baseball ball dropped from a height of 2 m rebounds up to 55 cm, and the embodiment of the present invention has a better cushioning property from the beginning. Was confirmed. In addition, the same structure was used, and only the thread-like material was formed into a shape having a total length of 32 mm and the tip portion curled downward to 25 mm, and the granular material was filled in the same manner as above. , Only 20 kg / m 2 could be filled. Then, the rebound of the rubber ball is initially equivalent to that of the embodiment of the present invention, but after about half a year, the thickness of the granular material layer is thin and hard, and from the same height of 2 mm. The dropped rubber baseball ball rebounded to a height of 50 cm, and it was found that the cushioning property was extremely lower than that of the example of the present invention.
【００１３】本発明の各糸状物２・・２のジグザグ状の捲
縮の程度は１０％以下が好ましく、最も好ましくは１〜
２％程度である。すなわち、捲縮率が２％を越えると徐
々に上からの力に対する抗力が低下し、経時的に厚さが
減少していく傾向が見られるとともに、粒状体の充填作
業の作業性も次第に悪化する。また、捲縮率が１％未満
になると、芝の自立性が低下し、次第にクッション性が
悪くなるとともに、粒状体の充填作業時には、糸状物が
容易に倒れてしまい、その作業性は次第に悪化する。The degree of the zigzag crimp of each of the filaments 2 of the present invention is preferably 10% or less, and most preferably 1 to 2.
It is about 2%. That is, when the crimp ratio exceeds 2%, the drag against the force from above gradually decreases, and the thickness tends to decrease with time, and the workability of the filling operation of the granular material gradually deteriorates. I do. Further, when the crimping ratio is less than 1%, the independence of the turf decreases, the cushioning property gradually deteriorates, and at the time of filling the granular material, the thread-like material easily falls down, and the workability gradually deteriorates. I do.
【００１４】以下に示す表は、糸状物の捲縮の形状およ
び捲縮率と、各種性能を比較した結果を示す表であり、
捲縮率については、６４００Ｄの糸に初荷重１．９ｇを
掛け、６０°Ｃの熱水に１分間浸して変化率を測定した
値で表している。The following table shows the results of comparison between the crimp shape and the crimp ratio of the filamentous material and various performances.
The crimp rate is represented by a value obtained by applying an initial load of 1.9 g to a 6400D yarn, immersing the yarn in hot water at 60 ° C. for 1 minute, and measuring the rate of change.
【００１５】[0015]
【表１】 [Table 1]
【００１６】この表から明らかなように、糸状物を１．
２％の捲縮率でジグザグ状とした場合に、各種の機能に
おいて総合的に最も優れた性能を示した。また、時間の
経過による厚さの変化については、６．５〜１５％の捲
縮率で３次元状にカールしたもの、あるいは、先端部を
下方にカールしたものについては、糸状物の高さ２５ｍ
ｍでその内部に２２ｍｍの高さまで砂を充填した場合、
前記したように１年後に砂は１５ｍｍにまで減少してい
たのに対し、捲縮率数％のジグザグ状とした本発明のも
のでは、同じ状況下で砂の高さは２０ｍｍにまでしか減
少しなかった。As is apparent from this table, the filamentous material was used for 1.
When it was formed into a zigzag shape at a crimp rate of 2%, the overall performance was excellent in various functions. Regarding the change in thickness with the passage of time, the three-dimensional curl at a crimp rate of 6.5 to 15%, or the curl of the tip downward, the height of the thread 25m
m, the inside of which is filled with sand to a height of 22 mm,
As described above, the sand was reduced to 15 mm after one year, while the zigzag shape of the crimping rate of the present invention was reduced to only 20 mm under the same conditions. Did not.
【００１７】なお、本発明に適用される糸状物の材質と
しては、ポリアミドのほかポリプロピレンが好適であ
り、繊維形状としてはモノフィラメント、マルチフィラ
メント、スプリットヤーン、フラットヤーン等が好適に
使用できる。また、基布としては、織物のほか、編物、
不織布を使用することができるが、ポリプロピレン製の
織布を使用するのが好ましい。The material of the filamentous material applied to the present invention is preferably polypropylene in addition to polyamide, and the fiber shape is preferably monofilament, multifilament, split yarn, flat yarn, or the like. In addition, as a base cloth, in addition to woven fabric, knitted fabric,
A non-woven fabric can be used, but a woven fabric made of polypropylene is preferably used.
【００１８】更に、糸状物間に充填される粒状体として
は、砂のほかに土、あるいは炭酸カルシウム等の無機粉
粒体、ゴムまたは合成樹脂等の有機粉粒体等も適用可能
である。更にまた、人工芝の施工にあたっては、その下
方に適宜の透水性の下地材を敷設するのが、粒状体の固
化防止上好ましい。Further, as the granular material to be filled between the filamentous materials, in addition to sand, soil, inorganic particles such as calcium carbonate, and organic particles such as rubber or synthetic resin can be applied. Furthermore, when constructing the artificial turf, it is preferable to lay an appropriate permeable base material below the artificial turf in order to prevent solidification of the granular material.
【００１９】なお、各糸状物単体のジグザグの方向とし
ては、前記したように２次元状でも３次元でもよく、要
は糸状物の集合体として３次元状のジグザグ構造をなし
ていればよい。The zigzag direction of each single filament may be two-dimensional or three-dimensional as described above. In short, it is only necessary that the aggregate of the filaments has a three-dimensional zigzag structure.
【００２０】[0020]
【発明の効果】 以上説明したように、本発明によれ
ば、人工芝の芝葉を形成する各糸状物をジグザグ状に捲
縮させ、基布上で全体として３次元のジグザグ構造とし
ているので、上からの力に対する抗力が、従来の先端部
を下向きにカールしたものや全体として３次元にカール
したものに比して大きく、長期間の使用によってもクッ
ション性が損なわれることがなく、また、糸状物間に充
填される粒状物の減少が少なく、長期にわたって当初の
性能を維持することが可能となり、メンテナンスが容易
であるばかりでなく、粒状体の充填作業が極めて容易と
なった。As described above, according to the present invention, each thread forming the turf leaf of the artificial turf is crimped in a zigzag shape to form a three-dimensional zigzag structure as a whole on the base cloth. The resistance to the force from above is larger than that of the conventional curled down end or three-dimensional curl as a whole, and the cushioning property is not impaired even by long-term use. The decrease in the amount of the granular material filled between the filamentous materials was small, and it was possible to maintain the initial performance for a long period of time, so that not only the maintenance was easy, but also the operation of filling the granular material was extremely easy.
【図１】 本発明実施例の一部分を示す縦断面図FIG. 1 is a longitudinal sectional view showing a part of an embodiment of the present invention.
【図２】 その各糸状物２・・２のジグザグ形状の説明図FIG. 2 is an explanatory view of a zigzag shape of each of the filaments 2.
【図３】 本発明実施例の一部分を示す平面図FIG. 3 is a plan view showing a part of the embodiment of the present invention.
【図４】 糸状物の先端部を下方にカールした従来の粒
状体入り人工芝の構造例を示す縦断面図FIG. 4 is a longitudinal sectional view showing an example of the structure of a conventional artificial turf containing a granular material in which the tip of a thread is curled downward.
【図５】 糸状物を３次元状にカールした従来の粒状体
入り人工芝の構造例を示す縦断面図FIG. 5 is a longitudinal sectional view showing a structural example of a conventional artificial turf containing a granular material in which a filamentous material is curled three-dimensionally.
１０・・・・人工芝本体 １・・・・基布 ２・・２・・・・糸状物 ３・・・・ゴムラテックス ４・・・・粒状体 Ｇ・・・・地盤 Ｂ・・・・下地材 10 ··· Artificial turf main body 1 ··· Base fabric 2 ······· Filament 3 ··· Rubber latex 4 ··· Granular body G ··· Soil B ··· Base material
Claims (1)
人工芝の芝目内に、粒状体が充填されてなる粒状体入り
人工芝において、上記各糸状物がそれぞれジグザグ状に
捲縮され、上記基布上で各糸状物が全体として３次元の
ジグザグ構造を形成していることを特徴とする粒状体入
り人工芝。1. An artificial turf containing a granular material, wherein the granular material is filled in the grass of an artificial turf in which a plurality of filamentous materials are planted on a base cloth, wherein each of the filamentous materials is crimped in a zigzag shape. An artificial turf containing a granular material, wherein each of the thread-like objects forms a three-dimensional zigzag structure as a whole on the base cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061773A JP2582946B2 (en) | 1991-03-26 | 1991-03-26 | Artificial turf with granular material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061773A JP2582946B2 (en) | 1991-03-26 | 1991-03-26 | Artificial turf with granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04297604A JPH04297604A (en) | 1992-10-21 |
| JP2582946B2 true JP2582946B2 (en) | 1997-02-19 |
Family
ID=13180757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3061773A Expired - Fee Related JP2582946B2 (en) | 1991-03-26 | 1991-03-26 | Artificial turf with granular material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582946B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6435376B1 (en) * | 2017-07-06 | 2018-12-05 | 株式会社ピカコーポレイション | Artificial grass |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4855797A (en) * | 1987-07-06 | 1989-08-08 | Siemens Corporate Research And Support, Inc. | Modulation doped high electron mobility transistor with n-i-p-i structure |
-
1991
- 1991-03-26 JP JP3061773A patent/JP2582946B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04297604A (en) | 1992-10-21 |
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