JP2007205023A - Artificial lawn laying structure and artificial lawn laying method - Google Patents
Artificial lawn laying structure and artificial lawn laying method Download PDFInfo
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本発明は、合成樹脂製繊維からなる芝糸の間に粒状体を充填した人工芝敷設構造とその敷設方法に関するものである。 The present invention relates to an artificial turf laying structure in which granules are filled between turf yarns made of synthetic resin fibers and a laying method thereof.
従来、基布に合成樹脂製繊維を芝糸としてタフティングマシンを用いて多本数植設し、この基布の裏面にゴムラテックス等のバッキング材を塗布して芝糸を固定し、この植設された芝糸間に砂等の粒状体を充填した粒状体層を設けた粒状体入り人工芝敷設構造は、各種スポーツ用競技場等の表面材として広く用いられている。 Conventionally, a large number of synthetic resin fibers were planted on the base fabric using a tufting machine, and a backing material such as rubber latex was applied to the back of the base fabric to fix the turf yarn. Granulated artificial turf laying structures in which a granular material layer filled with granular materials such as sand is provided between the turf yarns are widely used as surface materials for various sports stadiums.
かかる人工芝敷設構造のうち、粒状体層に浸透した水分の蒸散効果により表面温度の低下を図るものとしては、例えば、人工芝生の基布の上に、繊維構造体等を用い基本的にパイル面と基布の間に位置され０．７ｍｍ乃至３０ｍｍ、より好ましくは３ｍｍ乃至１０ｍｍである粒状体層としての水分保持層を形成することによって、水分蒸散の気化熱による周辺環境の清涼化効果を得ることができ、或いは競技場に用いられるに際し、擦過傷及び／又は火傷発生防止の効果を得ることができる水分保持型人工芝生が開示されている（下記特許文献１参照）。 Among such artificial turf laying structures, the surface temperature can be lowered by the transpiration effect of the water that has permeated into the granular material layer. For example, a fiber structure or the like is basically used on the artificial lawn base fabric. By forming a moisture retaining layer as a granular layer of 0.7 mm to 30 mm, more preferably 3 mm to 10 mm, located between the surface and the base fabric, the effect of cooling the surrounding environment due to the heat of vaporization of moisture transpiration There has been disclosed a moisture-retaining artificial lawn that can be obtained, or can be used to prevent scratches and / or burns when used in a stadium (see Patent Document 1 below).
また、粒状体として硅酸分が８５％以上の天然硅砂及び／又は吸湿性合成樹脂粒子を用いて粒状体層を形成し、且つその下層に吸水性物質を敷いた砂入り人工芝敷設構造が開示されている（下記特許文献２参照）。 Moreover, the artificial turf laying structure with sand which formed the granular body layer using the natural cinnabar sand and / or hygroscopic synthetic resin particle | grains whose oxalic acid content is 85% or more as a granular body, and spread | laid the water-absorbing substance on the lower layer is provided. It is disclosed (see Patent Document 2 below).
上記従来の人工芝敷設構造にあっては、粒状体層を形成する粒状体である砂や天然硅砂等に水分が浸透、保持されるので、その蒸散効果により表面温度の低下を図ることができる。 In the above-described conventional artificial turf laying structure, moisture penetrates and is retained in sand, natural dredged sand, etc., which are granular bodies forming the granular layer, so that the surface temperature can be lowered by the transpiration effect. .
しかしながら、砂や天然硅砂等が雨水等によって締め固まったり人体等によって踏み固められたりなどすることによって、粒状体層が硬くなってしまうことがある。粒状体層が硬くなってしまうと、衝撃を吸収することができなくなるだけでなく、砂等の流動性が失われることによって粒同士の摩擦がなくなり滑り易くなる。 However, when the sand, natural dredged sand, or the like is compacted by rain water or the like or is stepped and solidified by a human body, the granular material layer may become hard. If the granular material layer becomes hard, not only cannot the impact be absorbed, but also the fluidity of sand or the like is lost, so that the friction between the particles is eliminated and it becomes easy to slide.
この問題を解決すべく、粒状体として上記の砂や天然硅砂等の替わりに木片やコルク粒等を粉砕したもの又は籾殻やおがくず等を用いて粒状体層を形成した人工芝敷設構造が提案されている（下記特許文献３参照）。 In order to solve this problem, an artificial turf laying structure in which a granular material layer is formed by pulverizing a piece of wood or cork grain instead of the above-mentioned sand or natural dredged sand as a granular material or using rice husk or sawdust etc. has been proposed. (See Patent Document 3 below).
このような人工芝敷設構造は、木片やコルク粒等を粉砕したもの或いは籾殻やおがくず等の粒状体が水分を保持する一方で雨水等によって締め固まったり人体等によって踏み固められたりすることがないので、蒸散効果を発揮すると共に衝撃を吸収することができる。
しかしながら、上記従来の人工芝敷設構造にあっては、粒状体が保持している水分によって木片やコルク粒を粉砕したもの或いは籾殻やおがくず等が腐ってしまうことがある。そうすると、悪臭の発生等を引き起こし不衛生になったり、また、粒状体層が変色して見栄えを損ねたりすることになる。 However, in the conventional artificial turf laying structure, wood pieces, cork grains, rice husks, sawdust, or the like may rot due to moisture retained by the granular material. If it does so, generation | occurrence | production of malodor etc. will be caused and it will become unsanitary, and a granular material layer will discolor and it will impair appearance.
そこで、本発明は、上記従来の問題に鑑みてなされ、蒸散効果や衝撃吸収性を維持することができ、しかも、衛生的で見栄えの良い人工芝敷設構造及び人工芝敷設方法を提供することを課題とする。 Therefore, the present invention has been made in view of the above-described conventional problems, and is capable of maintaining a transpiration effect and shock absorption, and also provides a sanitary and good-looking artificial turf laying structure and an artificial turf laying method. Let it be an issue.
本発明は、上記課題を解決すべくなされたものであり、本発明に係る人工芝敷設構造は、芝糸を基布に植設し、上記植設された芝糸間に粒状体を充填して粒状体層を設けた人工芝生を基礎層上に敷設した人工芝敷設構造であって、該粒状体層に樹皮を粉砕した粒状体が配合されていることを特徴とする。 The present invention has been made to solve the above-mentioned problems, and an artificial turf laying structure according to the present invention has turf yarn planted on a base fabric, and a granular material is filled between the planted turf yarns. An artificial turf laying structure in which an artificial lawn provided with a granular material layer is laid on a base layer, wherein the granular material layer is blended with a granular material obtained by pulverizing bark.
該構成の人工芝敷設構造にあっては、粒状体層に配合した樹皮を粉砕した粒状体が水分を保持する。また、樹皮は柔らかくしかも弾性を有するので、例えば人体等に踏まれても、柔らかく変形しその後復元する。尚、粒状体は、粒状や鱗片状、或いは繊毛状などの形状に樹皮を粉砕したものである。 In the artificial turf laying structure having such a configuration, the granular material obtained by pulverizing the bark blended in the granular material layer retains moisture. In addition, since the bark is soft and elastic, even if it is stepped on by a human body or the like, it is deformed softly and then restored. The granular material is obtained by pulverizing the bark into a granular shape, a scale shape, or a cilia-like shape.
更に、一般に樹皮は、その表面に油分を有しているので、樹皮内部に水が浸透するのを抑制することができ、腐敗しにくい。 Furthermore, since the bark generally has oil on its surface, it can suppress the penetration of water into the bark and is less susceptible to spoilage.
また、樹皮を粉砕した粒状体が、粒状体層の少なくとも表面付近に配合されていることが好ましく、蒸散効果が効果的に発揮される。 Moreover, it is preferable that the granular material which grind | pulverized the bark is mix | blended at least at the surface vicinity of a granular material layer, and a transpiration effect is exhibited effectively.
更に、樹皮は、杉又は檜のうちの少なくとも一つであることが好ましい。一般に、樹皮は廃棄されるものであるが、これを利用することによって、廃棄物の量を減少させることができるだけでなく、人工芝敷設構造の製造コストを低くすることができる。また、廃棄せずとも樹皮を利用することにより、限りある資源を有効に利用することができる。 Furthermore, it is preferable that the bark is at least one of cedar or straw. In general, bark is discarded, but by using it, not only can the amount of waste be reduced, but also the manufacturing cost of the artificial turf laying structure can be reduced. Moreover, limited resources can be used effectively by using bark without discarding.
また、本発明に係る人工芝敷設方法は、基礎層上に人工芝生を敷き、樹皮を粉砕した粒状体を配合した粒状体層を芝糸間に形成することを特徴とする。 In addition, the artificial turf laying method according to the present invention is characterized in that an artificial lawn is laid on a base layer, and a granule layer in which a granule obtained by pulverizing bark is blended is formed between turf yarns.
このように、本発明に係る人工芝敷設構造にあっては、粒状体層に樹皮を粉砕した粒状体が配合されているので、樹皮が水分を保持し蒸散効果が維持できる。また、樹皮は柔らかくしかも弾性を有するので、例えば人体等に踏まれても、従来のように固まってしまうことなく、柔らかく変形してその衝撃を吸収しその後復元する。従って、衝撃吸収性を維持することができる。しかも、樹皮はその内部に水が浸透しにくいので腐りにくく衛生的でかつ見栄えが良くなるという効果を奏する。 As described above, in the artificial turf laying structure according to the present invention, since the granular material obtained by pulverizing the bark is blended in the granular material layer, the bark retains moisture and the transpiration effect can be maintained. Further, since the bark is soft and elastic, even if it is stepped on, for example, by a human body, it is softly deformed and absorbs its impact and then restored without being hardened as in the prior art. Therefore, the shock absorption can be maintained. In addition, the bark has an effect that the water does not easily penetrate into the bark, so it does not rot and is hygienic and looks good.
以下、本発明に係る人工芝敷設構造及び人工芝敷設方法の一実施形態について、図面を参酌しつつ説明する。
図１は、本発明に係る人工芝敷設構造の一実施形態を示す断面図である。この人工芝敷設構造１００は、例えば、ゴルフ場や陸上競技場等の各種スポーツ用競技場や、公園等のグラウンド、ビルの屋上などに人工芝生を敷設した構造体である。人工芝敷設構造１００は、例えばグラウンド等の基礎層４０に人工芝生が敷設された後、砂散布機によって粒状体層１０が形成されている。
Hereinafter, an embodiment of an artificial turf laying structure and an artificial turf laying method according to the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing an embodiment of an artificial turf laying structure according to the present invention. This artificial turf laying structure 100 is, for example, a structure in which artificial turf is laid on a sports stadium such as a golf course or an athletic stadium, a ground such as a park, or a rooftop of a building. In the artificial turf laying structure 100, for example, after the artificial turf is laid on the ground layer 40 such as the ground, the granular material layer 10 is formed by a sand spreader.
人工芝生は、ポリプロピレン製の基布３０に、５５００デシデックスのナイロン製モノフィラメントヤーン２０１と５５００デシデックスの高密度ポリエチレン製スリットヤーン２０２とを撚糸してなる芝糸２０を、糸重量１．４ｋｇ／ｍ2乃至２．１ｋｇ／ｍ2及びパイル長５０ｍｍ乃至１００ｍｍとなるように植毛して、基布の裏面にバッキング材を塗布して芝糸を固定して形成されるものである。 The artificial lawn is a lawn yarn 20 formed by twisting a 5500 decidex nylon monofilament yarn 201 and a 5500 decidex high density polyethylene slit yarn 202 on a polypropylene base fabric 30 and a yarn weight of 1.4 kg / m 2. Up to 2.1 kg / m 2 and pile length of 50 mm to 100 mm are planted, and a backing material is applied to the back surface of the base fabric, and turf yarn is fixed.
粒状体層１０は、芝糸間に形成され、人工芝敷設構造１００の表面に配置される表面層１と表面層１の下に配置される下層２とで構成される二層構造である。粒状体層１０の厚みは、例えば、３０ｍｍ乃至５０ｍｍ程度である。尚、粒状体層１０は、二層構造に限定されるものではなく、後述の粒状体１１が表層付近に含まれるものであれば単層構造や三層以上の多層構造としてもよい。 The granular material layer 10 is formed between turf yarns and has a two-layer structure including a surface layer 1 disposed on the surface of the artificial turf laying structure 100 and a lower layer 2 disposed below the surface layer 1. The thickness of the granular material layer 10 is, for example, about 30 mm to 50 mm. The granular material layer 10 is not limited to a two-layer structure, and may be a single-layer structure or a multilayer structure of three or more layers as long as a granular material 11 described later is included in the vicinity of the surface layer.
表面層１は、樹皮を粒径０．５ｍｍ乃至５ｍｍとなるように粉砕した粒状体１１と粒径約０．３ｍｍ乃至３ｍｍのゴム粒とを１：１乃至１：５の配合比率となるように混ぜ合わせることによって形成されている。表面層１の厚みは、例えば、１０ｍｍ乃至３０ｍｍ程度である。厚さが１０ｍｍを下回ると表面層１を形成する粒状体１１による被覆が十分でない部位ができやすく、適当な蒸散効果が得られにくくなる。逆に、厚さが３０ｍｍを超えると、表面層１の下側に保持される水が蒸発せず溜まってしまい、水捌けが悪くなる。 The surface layer 1 has a blending ratio of 1: 1 to 1: 5 of the granular material 11 obtained by pulverizing the bark to have a particle diameter of 0.5 mm to 5 mm and rubber particles having a particle diameter of about 0.3 mm to 3 mm. It is formed by mixing with. The thickness of the surface layer 1 is, for example, about 10 mm to 30 mm. When the thickness is less than 10 mm, it is easy to form a portion that is not sufficiently covered with the granular material 11 forming the surface layer 1, and it becomes difficult to obtain an appropriate transpiration effect. On the other hand, if the thickness exceeds 30 mm, the water retained under the surface layer 1 will not evaporate and accumulate, resulting in poor water drainage.
樹皮は、杉又は檜等の樹皮であり、繊維をなすセルロースとバインダーとしてのリグニンとを有し、その表面には油分を有している。この樹皮は、特に廃棄されたものであることが好ましく、廃棄物の量を低減することができ、人工芝敷設構造１００の製造コストを低くすることができる。尚、樹皮は廃棄されたものでなくてもよく、一般に廃棄するものである樹皮を廃棄せずに利用することにより、限りある資源を有効に利用することができる。 The bark is bark such as cedar or birch, and has cellulose forming fibers and lignin as a binder, and has oil on its surface. The bark is preferably discarded, and the amount of waste can be reduced, and the manufacturing cost of the artificial turf laying structure 100 can be reduced. The bark does not have to be discarded, and limited resources can be used effectively by using the bark that is generally discarded without discarding it.
樹皮を粉砕した粒状体１１の粒径は、０．５ｍｍ乃至５ｍｍであるが、好ましくは１ｍｍ乃至３ｍｍである。粒径が０．５ｍｍを下回ると粒状体層１０からの通気性が悪化して水分の蒸散が十分に行われなくなり、粒径が５ｍｍを上回ると歩行感の悪化等を引き起こし好ましくない。尚、粒状体１１は、樹皮を粉砕した粉砕片であるが、丸い粒状の形状に限らず、鱗片状の形状や細長い繊毛状の形状であってもよい。 The particle size of the granular material 11 obtained by pulverizing the bark is 0.5 mm to 5 mm, preferably 1 mm to 3 mm. When the particle size is less than 0.5 mm, the air permeability from the granular material layer 10 is deteriorated and the water is not sufficiently evaporated, and when the particle size is more than 5 mm, the walking feeling is deteriorated. The granular material 11 is a pulverized piece obtained by pulverizing the bark, but is not limited to a round granular shape, and may be a scaly shape or a long ciliated shape.
下層２は、表面層１の下側に形成され、粒径２ｍｍ以下の砂に粒径約０．３ｍｍ乃至３ｍｍのゴム粒が配合されて３０ｋｇ／ｍ2の割合で散布されることにより形成される。下層２の厚みは、粒状体層１０の厚みが３０ｍｍ乃至５０ｍｍ程度となるように表面層１の厚みに対応して決定される。例えば、表面層１の厚みが１０ｍｍである場合には、下層２の厚みは３０ｍｍとなる。 The lower layer 2 is formed on the lower side of the surface layer 1 and is formed by mixing rubber particles having a particle size of about 0.3 mm to 3 mm with sand having a particle size of 2 mm or less and spraying at a rate of 30 kg / m 2. The The thickness of the lower layer 2 is determined corresponding to the thickness of the surface layer 1 so that the thickness of the granular material layer 10 is about 30 mm to 50 mm. For example, when the thickness of the surface layer 1 is 10 mm, the thickness of the lower layer 2 is 30 mm.
このような人工芝敷設構造１００を製造する人工芝敷設方法は、まず、基礎層４０上、例えばグラウンドであればグラウンドの表面に人工芝生を敷く。次に、樹皮を粉砕して形成した粒状体１１とゴム片とを人工芝生の上に散布する。こうして、樹皮を粉砕した粒状体１１とゴム片とが１：１乃至１：５の配合比率となるように配合された粒状体層１０が芝糸２０間に形成され、人工芝敷設構造１００が完成する。 In the artificial turf laying method for manufacturing such an artificial turf laying structure 100, first, an artificial turf is laid on the surface of the ground layer 40, for example, the ground surface. Next, the granular material 11 formed by pulverizing the bark and rubber pieces are sprayed on the artificial lawn. Thus, the granular material layer 10 in which the granular material 11 obtained by pulverizing the bark and the rubber pieces are blended so as to have a blending ratio of 1: 1 to 1: 5 is formed between the turf yarns 20, and the artificial turf laying structure 100 is formed. Complete.
以上のような構成の人工芝敷設構造１００にあっては、粒状体層１０に樹皮を粉砕した粒状体１１が配合されているので、降雨や散水等により表面層１に浸透した水が粒状体１１（樹皮）に保持され蒸発することによって蒸散効果が得られ、人工芝敷設構造１００の表面温度が低下する。 In the artificial turf laying structure 100 configured as described above, since the granular material 11 obtained by pulverizing bark is blended in the granular material layer 10, the water that has permeated the surface layer 1 due to rain, water spray, etc. is granular. 11 (bark) is held and evaporated to obtain a transpiration effect, and the surface temperature of the artificial turf laying structure 100 is lowered.
また、樹皮を粉砕した粒状体１１は、柔らかくしかも弾性を有するので、例えば、人体等に踏まれるなどして外力が作用しても、粒状体１１が柔らかく変形してその衝撃を吸収することができる。しかも、粒状体１１は、外力が作用しなくなると、その弾性により元の形状に戻る。従って、衝撃吸収性を得ることができるだけでなく、それを長く維持することができる。 Further, since the granular material 11 obtained by pulverizing the bark is soft and elastic, even when an external force is applied by being stepped on by a human body or the like, the granular material 11 is softly deformed and absorbs the impact. it can. Moreover, when the external force no longer acts, the granular body 11 returns to its original shape due to its elasticity. Therefore, not only can shock absorption be obtained, but it can be maintained for a long time.
更に、樹皮は、繊維をなすセルロースとバインダーとしてのリグニンとを有し、その表面には油分を有している。表面に油分があると、水を弾くことができるので、樹皮内部に水が浸透しにくくなる。そうすると、一般に加水分解し易いリグニンが水に触れにくくなる。よって、リグニンは加水分解されにくくなり、その結果、繊維をなすセルロースがリグニンに保護され腐敗しにくくなる。従って、蒸散効果を維持することができ、しかも、粒状体１１が腐敗して悪臭を出したり変色したりしにくくなるので、衛生的でかつ見栄えが良くなる。 Further, the bark has cellulose forming fibers and lignin as a binder, and has oil on its surface. If there is oil on the surface, water can be repelled, making it difficult for water to penetrate inside the bark. If it does so, the lignin which is generally easy to hydrolyze will become difficult to touch water. Therefore, lignin is hardly hydrolyzed, and as a result, the cellulose forming the fiber is protected by lignin and is not easily spoiled. Therefore, the transpiration effect can be maintained, and moreover, the granular material 11 is not easily spoiled to produce a bad odor or discoloration, so that it is hygienic and looks good.
また更に、一般に樹皮の比重（約０．２乃至０．３）は、砂の比重（約１．５５）やゴムの比重（約０．５）よりも小さいので、粒状体１１の運搬等に非常に便利である。 Furthermore, the specific gravity of the bark (about 0.2 to 0.3) is generally smaller than the specific gravity of sand (about 1.55) and the specific gravity of rubber (about 0.5). Very convenient.
更に、粒状体１１は樹皮を粉砕したものであるため、その粉砕片はささくれ立っている。従って、基礎層４０に敷いた人工芝生の上に粒状体１１を散布するとささくれ立った粉砕片が芝糸に絡みつくので、雨水等によって流されにくくなる。従って、表面層１が薄くなったりなくなったりしにくくなる。 Furthermore, since the granular material 11 is obtained by pulverizing the bark, the crushed pieces stand up. Therefore, when the granular material 11 is sprayed on the artificial lawn laid on the foundation layer 40, the crushed pieces that are tangled up are entangled with the turf yarn, so that it is difficult to be washed away by rainwater or the like. Therefore, it becomes difficult for the surface layer 1 to become thin or disappear.
また更に、樹皮は自然の樹木の色を呈しているので、樹皮を粉砕した粒状体１１が配合される表面層１も自然の樹木の色を呈する。従って、人工芝敷設構造１００自体が自然な樹木の色を呈する。 Furthermore, since the bark has a natural tree color, the surface layer 1 containing the granular material 11 obtained by pulverizing the bark also has a natural tree color. Therefore, the artificial grass laying structure 100 itself exhibits a natural tree color.
また更に、表面層１は、粒状体層１０の表面に形成されている。従って、蒸散効果が効果的に発揮される。 Furthermore, the surface layer 1 is formed on the surface of the granular material layer 10. Therefore, the transpiration effect is exhibited effectively.
１…表面層、２…下層、１０…粒状体層、１１…粒状体、２０…芝糸、３０…基布、４０…基礎層、１００…人工芝敷設構造 DESCRIPTION OF SYMBOLS 1 ... Surface layer, 2 ... Lower layer, 10 ... Granular body layer, 11 ... Granular body, 20 ... Turf thread, 30 ... Base fabric, 40 ... Base layer, 100 ... Artificial grass laying structure
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| ITMI20120098A1 (en) * | 2012-01-27 | 2013-07-28 | Ma De S R L | SYNTHETIC HERBAL CARPET AND PROCEDURE FOR ITS PREPARATION |
| JP2019522131A (en) * | 2016-07-18 | 2019-08-08 | ポリテックス・シュポルトベレーゲ・プロドゥクシオンス・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＰｏｌｙｔｅｘ Ｓｐｏｒｔｂｅｌａｅｇｅ Ｐｒｏｄｕｋｔｉｏｎｓ ＧｍｂＨ | Artificial grass with aggregate infill |
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| WO2011024066A3 (en) * | 2009-08-27 | 2011-05-26 | Roberto Nusca | Infill material for synthetic turfs and synthetic turfs so obtained |
| US10837146B2 (en) | 2009-08-27 | 2020-11-17 | Mar.Project S.R.L. | Infill material for synthetic turfs and synthetic turfs so obtained |
| ITMI20120098A1 (en) * | 2012-01-27 | 2013-07-28 | Ma De S R L | SYNTHETIC HERBAL CARPET AND PROCEDURE FOR ITS PREPARATION |
| JP2019522131A (en) * | 2016-07-18 | 2019-08-08 | ポリテックス・シュポルトベレーゲ・プロドゥクシオンス・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＰｏｌｙｔｅｘ Ｓｐｏｒｔｂｅｌａｅｇｅ Ｐｒｏｄｕｋｔｉｏｎｓ ＧｍｂＨ | Artificial grass with aggregate infill |
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