JPH0483007A - Artificial lawn sand, manufacture thereof, and artificial lawn structure using the same - Google Patents
Artificial lawn sand, manufacture thereof, and artificial lawn structure using the sameInfo
- Publication number
- JPH0483007A JPH0483007A JP19653990A JP19653990A JPH0483007A JP H0483007 A JPH0483007 A JP H0483007A JP 19653990 A JP19653990 A JP 19653990A JP 19653990 A JP19653990 A JP 19653990A JP H0483007 A JPH0483007 A JP H0483007A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- resin
- artificial lawn
- artificial
- lawn
- 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
Links
- 239000004576 sand Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920005989 resin Polymers 0.000 claims abstract description 72
- 239000011347 resin Substances 0.000 claims abstract description 72
- 239000000839 emulsion Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 7
- 239000000194 fatty acid Substances 0.000 claims abstract description 7
- 229930195729 fatty acid Natural products 0.000 claims abstract description 7
- 238000004132 cross linking Methods 0.000 claims abstract description 6
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 3
- 239000002981 blocking agent Substances 0.000 claims description 5
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract 3
- 230000006378 damage Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- -1 methylol group Chemical group 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 229920006127 amorphous resin Polymers 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 208000037062 Polyps Diseases 0.000 description 1
- 241001125046 Sardina pilchardus Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
- Road Paving Structures (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、クツション性、圧縮耐久性ならびに柔軟性に
優れたグランドを提供する人工芝生用砂およびその製造
方法およびそれからなる人工芝生構造体に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an artificial lawn sand that provides a ground with excellent cushioning properties, compression durability, and flexibility, a method for producing the same, and an artificial lawn structure made from the sand. .
[従来技術]
従来から、人工芝生の芝目内に砂を散布してスボーツ用
グランドに使用することは知られている。[Prior Art] It has been known to spread sand within the grain of an artificial lawn for use as a sports field.
また、弾性樹脂粒子や弾性樹脂を均一に被覆させてなる
砂などを人工芝生の芝目内に散布することも知られてい
る。It is also known to spread elastic resin particles or sand uniformly coated with an elastic resin into the turf of an artificial lawn.
[発明が解決しようとする課題]
しかし、かかる弾性樹脂均一被覆砂を散布した人工芝生
グランドは、充填が細密化し、空隙率が低くく、結局、
クツション性が乏しく、表面の硬化現象も早く、グラン
ド表面の弾性保持期間が短く十分でないという欠点があ
った。[Problems to be Solved by the Invention] However, in the artificial lawn ground in which such elastic resin uniformly coated sand is spread, the filling becomes fine and the porosity is low, and as a result,
The drawbacks were that the cushioning properties were poor, the surface hardened quickly, and the elasticity retention period of the gland surface was short and insufficient.
本発明は、かかる従来砂入り人工芝生の欠点に鑑み、ク
ツション性に優れたグランドであって、グランドの表面
硬化が起きにくい柔軟なグランドを提供し得る人工芝生
用砂を提供せんとするものである。In view of the drawbacks of conventional artificial lawns containing sand, the present invention aims to provide sand for artificial lawns that can provide a flexible ground that has excellent cushioning properties and is less prone to surface hardening. be.
[課題を解決するための手段]
本発明は、かかる目的を次のような構成により達成した
ものである。[Means for Solving the Problems] The present invention achieves this object with the following configuration.
すなわち、本発明の人工芝生用砂は、砂表面に部分的に
不定形の樹脂が付着しており、かつ該樹脂の付着量が該
砂に対して0.5〜5重量%の範囲であることを特徴と
するものである。That is, the artificial lawn sand of the present invention has an amorphous resin partially attached to the sand surface, and the amount of the resin attached is in the range of 0.5 to 5% by weight based on the sand. It is characterized by this.
また、本発明の人工芝生用砂の製造方法は、100〜1
50℃の温度で乾燥、昇温した砂をミキサー中で攪拌さ
せながら、該砂にブロッキング防止剤の存在下で樹脂水
性エマルジョンを付与することによって、該砂に該樹脂
の皮膜を部分的に付着させることを特徴とするものであ
る。In addition, the method for producing artificial lawn sand of the present invention has a
A film of the resin is partially attached to the sand by applying an aqueous resin emulsion to the sand in the presence of an anti-blocking agent while stirring the sand that has been dried and heated at a temperature of 50°C in a mixer. It is characterized by allowing
また、本発明の人工芝生構造体は、芝目内に砂が充填さ
れてなる人工芝生構造体において、該砂が表面に部分的
に樹脂が付着されたものであることを特徴とするもので
ある。Further, the artificial lawn structure of the present invention is an artificial lawn structure in which the grass grains are filled with sand, and the sand is characterized in that a resin is partially attached to the surface of the artificial lawn structure. be.
[作用]
従来、砂表面に樹脂被膜を均一に被覆させたものを人工
芝生の芝目内に充填する技術は存在するが、かかる技術
を採用しても、クツション性が今−歩物足らないものし
か得られなかった。[Function] Conventionally, there is a technology in which the surface of sand is uniformly coated with a resin film and filled into the grain of artificial grass, but even if such technology is adopted, the cushioning properties are still insufficient. All I got was something.
本発明は、かかる従来技術の問題について鋭意検討した
結果、該樹脂被膜の付着状態が重要な作用を有すること
を究明したものである。The present invention has been made as a result of intensive investigation into the problems of the prior art, and it has been found that the adhesion state of the resin coating has an important effect.
すなわち、砂表面に部分的に付着していて、好ましくは
突起状または塊状に樹脂が固着されていると、極めて高
いクツション性を与える事実を究明して、本発明を完成
したものである。That is, the present invention was completed by investigating the fact that when the resin is partially attached to the sand surface, preferably in the form of protrusions or lumps, extremely high cushioning properties are provided.
本発明を図面により説明する。The present invention will be explained with reference to the drawings.
第1図は、本発明の人工芝生用砂の粒子構造の一例を示
す拡大写真図である。第2図は第1図の模式図である。FIG. 1 is an enlarged photographic diagram showing an example of the particle structure of the sand for artificial lawns of the present invention. FIG. 2 is a schematic diagram of FIG. 1.
第2図において、1は砂本体であり、2は該砂表面に部
分的に付着した樹脂である。In FIG. 2, 1 is the sand body, and 2 is the resin partially attached to the sand surface.
第3図は、本発明の範囲外の樹脂被膜によって均一に被
覆された砂(比較例1)の粒子構造を示す拡大写真図で
ある。FIG. 3 is an enlarged photograph showing the particle structure of sand (Comparative Example 1) uniformly coated with a resin coating outside the scope of the present invention.
第1〜2図と第3図を比較すると、樹脂の付着の仕方が
明確に相違することがわかる。すなわち、本発明の砂は
、樹脂2が、砂1表面に部分的に、好ましくは突起状ま
たは塊状に付着している。Comparing FIGS. 1-2 with FIG. 3, it can be seen that the way the resin is attached is clearly different. That is, in the sand of the present invention, the resin 2 is partially attached to the surface of the sand 1, preferably in the form of protrusions or lumps.
本発明の砂において、該樹脂の付着厚さは、付着方向の
粒径に対して、好ましくは約3%以上、さらに好ましく
は4〜15%であるものが、クツション性と耐久性のバ
ランスがよい。In the sand of the present invention, the adhesive thickness of the resin is preferably about 3% or more, more preferably 4 to 15%, based on the particle size in the adhesion direction, which provides a good balance between cushioning properties and durability. good.
かかる樹脂は、柔軟性、可撓性に優れた樹脂、さらに好
ましくはゴム弾性を有する樹脂がクツション性に優れて
いる。Such a resin has excellent flexibility and flexibility, and more preferably a resin having rubber elasticity has excellent cushioning properties.
かかる樹脂としては、たとえばSBR系、NBR系、C
R系、クロロプレン系などの合成ゴムや天然ゴム、アク
リル系樹脂、ポリエチレン−酢酸ビニル系共重合樹脂、
ポリエチレン−酢酸ビニル塩化ビニル系共重合樹脂、酢
酸ビニル−塩化ビニル系共重合樹脂、ビニリデン−アク
リル系共重合樹脂、ウレタン系樹脂などを使用すること
ができるが、これらに限定されるものではない。Such resins include, for example, SBR series, NBR series, C
Synthetic rubber and natural rubber such as R type and chloroprene type, acrylic resin, polyethylene-vinyl acetate type copolymer resin,
Polyethylene-vinyl acetate-vinyl chloride copolymer resins, vinyl acetate-vinyl chloride copolymer resins, vinylidene-acrylic copolymer resins, urethane resins, and the like can be used, but are not limited to these.
本発明においては、かかる樹脂をそのまま使用してもよ
いが、さらに架橋や加硫する組成または自己架橋型に変
性された樹脂を使用するのが、クツション性ならびに耐
久性に優れた砂を与えるので好ましい。In the present invention, such resins may be used as they are, but using resins that are further crosslinked, vulcanized, or modified to self-crosslinking type provides sand with excellent cushioning properties and durability. preferable.
上述の架橋剤、加硫剤としては、各々の樹脂によって使
用する薬剤は異なるが、硫黄、亜鉛華、酸化マグネシウ
ム、有機パーオキサイド、イワシアネート系化合物、メ
ラミン系化合物、エポキシ系化合物など一般に使用され
ているものが使用される。また、かかる組成に、さらに
老化防止剤のように通常ゴムに配合される薬剤が配合さ
れていてもよい。The crosslinking agents and vulcanizing agents mentioned above differ depending on each resin, but commonly used agents include sulfur, zinc white, magnesium oxide, organic peroxide, sardine compounds, melamine compounds, and epoxy compounds. The one that is available will be used. In addition, such a composition may further contain a drug such as an anti-aging agent that is normally blended into rubber.
また、自己架橋型樹脂としては、たとえば上述の各種樹
脂にカルボキシル基やメチロール基などの官能基を導入
して変性したものが使用できる。Further, as the self-crosslinking resin, for example, those modified by introducing a functional group such as a carboxyl group or a methylol group into the above-mentioned various resins can be used.
たとえば、SBRにカルボキシル基を導入した変性樹脂
やメチロールメラミンなどを使用することができる。For example, a modified resin in which carboxyl groups are introduced into SBR, methylolmelamine, etc. can be used.
本発明では、かかる樹脂を水性分散液(エマルジョン)
の形で使用する。この樹脂水性エマルジョンは砂の表面
で部分的に被膜を形成するが、該樹脂溶液では均一被膜
を形成して、本発明の効果を達成することができない。In the present invention, such resin is prepared as an aqueous dispersion (emulsion).
used in the form of This aqueous resin emulsion forms a film partially on the surface of the sand, but the resin solution cannot form a uniform film and achieve the effects of the present invention.
また、かかる樹脂水性エマルジョンに、さらに充填剤を
配合することができ、これによりさらに強い被膜を形成
することができる。かかる充填剤としては、たとえば炭
酸カルシウム、水酸化アルミュウム、カーボン、クレー
などを使用することができる。Further, a filler can be further added to the aqueous resin emulsion, thereby making it possible to form an even stronger film. As such fillers, for example, calcium carbonate, aluminum hydroxide, carbon, clay, etc. can be used.
また、該砂を着色する場合は、通常の顔料、染料を使用
して、該樹脂被膜を着色することができる。Further, when the sand is to be colored, the resin coating can be colored using ordinary pigments and dyes.
本発明の上述樹脂水性エマルジョンは、粘着性を制御す
るために、好ましくは0.01〜5重量%、さらに好ま
しくは1〜3重量%の範囲でワックスならびに後述のブ
ロッキング防止剤のような易滑性物質を含有させるのが
よい。かかる易滑性物質は、該ブロッキング防止剤と相
乗的に作用して樹脂の部分的付着に寄与するものであり
、両者とも付着樹脂中に残存するものである。The aqueous resin emulsion of the present invention preferably contains a wax and a lubricating agent such as the anti-blocking agent described below, preferably in the range of 0.01 to 5% by weight, more preferably 1 to 3% by weight, in order to control the tackiness. It is better to contain a sexual substance. Such slippery substances act synergistically with the antiblocking agent to contribute to partial adhesion of the resin, and both remain in the adhering resin.
かかる樹脂の付着量としては、砂の重量に対して0.
5〜5重量%、好ましくは1〜3重量%の範囲が上述の
樹脂の付着厚さを満足する上から好ましい。The amount of the resin attached is 0.0% based on the weight of the sand.
A range of 5 to 5% by weight, preferably 1 to 3% by weight is preferable in order to satisfy the above-mentioned resin adhesion thickness.
砂の粒子径は、別に制約はないが、グランド用としては
、0.15〜1.7mm(100〜10メツシユ)の大
きさのものが好ましく使用される。There are no particular restrictions on the particle size of the sand, but for ground use, sand with a size of 0.15 to 1.7 mm (100 to 10 mesh) is preferably used.
次に、本発明の人工芝生用砂の製造方法の一例について
説明する。Next, an example of the method for manufacturing artificial lawn sand of the present invention will be described.
まず、300〜500℃に加熱した熱風で、砂を攪拌し
ながら110〜140℃に昇温しで乾燥ならびに予熱す
る。First, sand is heated to 110 to 140°C with hot air heated to 300 to 500°C while stirring to dry and preheat.
昇温された砂は、次にミキサーに移され、攪拌されなが
ら上述の樹脂の水性エマルジョンと混合され、さらにブ
ロッキング防止剤が添加混合される。The heated sand is then transferred to a mixer and mixed with the aqueous emulsion of the resin while being stirred, and an antiblocking agent is added and mixed therein.
このときのミキサーとしては、好ましくは100〜40
0rpm、さらに好ましくは100〜20Qrpmのも
のを使用するのが、該樹脂被膜を部分的に付着させるの
によい。回転が速すぎると樹脂被膜が破れ易く、さらに
は砂が粉砕されたりするし、回転が遅すぎると、砂がく
っつき易(なり、いずれにしても部分的に付着させると
いう特定な作用効果を達成させることができない。The mixer at this time is preferably 100 to 40
It is good to use a speed of 0 rpm, more preferably 100 to 20 Qrpm, to partially adhere the resin film. If the rotation is too fast, the resin coating will be easily broken and the sand will be crushed. If the rotation is too slow, the sand will tend to stick together (and in any case, the specific effect of partially adhering will be achieved. I can't do it.
樹脂水性エマルジョンは、樹脂固形分量で、砂の重量に
対して好ましくは0.5〜5%、さらに好ましくは1〜
3%の範囲で付与する。The aqueous resin emulsion has a resin solid content of preferably 0.5 to 5%, more preferably 1 to 5%, based on the weight of the sand.
Granted within the range of 3%.
また、ブロッキング防止剤は、砂に対して好ましくは0
.01〜5重量%、さらに好ましくは0゜02〜0.1
重量%の範囲で混合される。Also, the antiblocking agent is preferably 0% against sand.
.. 0.01 to 5% by weight, more preferably 0.02 to 0.1
They are mixed in a range of % by weight.
かかるブロッキング防止剤としては、たとえば高級脂肪
酸およびその塩、たとえばステアリン酸およびステアリ
ン酸のカルシウム塩、鉛塩、亜鉛塩など、ポリエチレン
ワックスやパラフィンなどのワックス類、脂肪酸と多価
アルコールのエステルまたはその部分エステル、脂肪酸
アミド、脂肪酸ケトンなどを使用することができる。こ
れらの中でも高級脂肪酸およびその塩が効果的に優れて
いる。Such anti-blocking agents include, for example, higher fatty acids and their salts, such as stearic acid and calcium salts, lead salts, and zinc salts of stearic acid, waxes such as polyethylene wax and paraffin, esters of fatty acids and polyhydric alcohols, or portions thereof. Esters, fatty acid amides, fatty acid ketones, etc. can be used. Among these, higher fatty acids and their salts are effective and excellent.
かかるブロッキング防止剤は、予め樹脂中に配合されて
いたワックスと相乗的に作用して、砂表面に付着してい
る樹脂を偏らせるものである。Such an anti-blocking agent acts synergistically with the wax that has been mixed in the resin in advance to bias the resin adhering to the sand surface.
上述ミキサーは、必要ならば加熱することができる。こ
の加熱は架橋または加硫に必要な温度であればよく、場
合によっては室温でもよいこともあるが、好ましくは8
0℃以上の温度が付与される。かかる特定なミキサーを
用いたことによって、樹脂が水性エマルジョンであり、
好ましくは架橋型であること、攪拌されていること、ワ
ックスやブロッキング防止剤が存在することなどの相乗
効果により、好都合に砂表面に部分的に樹脂を付着させ
得たものである。The mixer described above can be heated if necessary. This heating may be carried out at a temperature necessary for crosslinking or vulcanization, and in some cases it may be at room temperature, but is preferably 88°C.
A temperature of 0° C. or higher is applied. By using such a specific mixer, the resin is an aqueous emulsion;
Preferably, the resin can be advantageously partially attached to the sand surface due to the synergistic effects of the crosslinked type, the agitation, and the presence of wax or antiblocking agent.
本発明の人工芝生構造体は、かかる人工芝生用砂を人工
芝生の芝目内に充填したものである。The artificial lawn structure of the present invention is obtained by filling the grains of an artificial lawn with such artificial lawn sand.
かかる砂の充填量は別に制約はないが、好ましくは全砂
充填量の少なくとも30重量%、さらに好ましくは50
重量%以上含有させるのが、該砂の機能を活用する上で
好ましい。かかる砂は、他の砂と混合して使用すること
は勿論、層状に充填させて使用することができる。There are no particular restrictions on the amount of sand packed, but it is preferably at least 30% by weight, more preferably 50% by weight of the total sand filling.
It is preferable to contain more than % by weight in order to utilize the functions of the sand. Such sand can of course be used by mixing it with other sands, or it can be used by filling it in layers.
かかる人工芝生構造体からなるグランドは、該樹脂が部
分的に付着していることと不定形であることから、空隙
率が高く、クツション性ならびに柔軟性に優れた特徴を
発揮するものである。The ground made of such an artificial lawn structure has a high porosity and exhibits excellent cushioning properties and flexibility because the resin is partially attached and the ground is amorphous.
[実施例] 以下実施例により、本発明を説明する。[Example] The present invention will be explained below with reference to Examples.
実施例1.2、比較例1.2
アスファルトで下地基盤を造り、その上にポリプ。ピレ
ン源平織物を基布とする、パイル長19mmのナイロン
フィルムスブリットヤーンを植毛した人工芝生を敷設し
た。Example 1.2, Comparative Example 1.2 A base is made of asphalt, and a polyp is placed on top of it. An artificial lawn made of nylon film splint yarn with a pile length of 19 mm and made of Pirene Genpei textile was laid.
この人工芝生の芝目内に、次の砂を約16mmの厚さに
散布して、グランドを形成した。The following sand was spread within the grain of this artificial lawn to a thickness of about 16 mm to form a ground.
まず、砂(粒径0. 3〜1. 2mm) 10kgを
乾燥機で130℃にまで昇温した後、130 rpmで
定速回転するミキサー内にうつし、自己架橋型変性5B
R(7)46%水性エマルジョン(固形分重量で0.
2kg)を攪拌中の砂に添加混合し、水蒸気が出な(な
ってから、さらにステアリン酸カルシウムを5g添加混
合した。First, 10 kg of sand (particle size 0.3 to 1.2 mm) was heated to 130°C in a dryer, and then transferred into a mixer rotating at a constant speed of 130 rpm to form self-crosslinking modified 5B.
R(7) 46% aqueous emulsion (0.
2 kg) was added and mixed to the sand being stirred, and after no more water vapor was released, 5 g of calcium stearate was further added and mixed.
得られた砂の樹脂塗布量は2重量%であり、第1図に示
したように表面に不定形の樹脂が付着したもので、該樹
脂の付着厚さは約9%であった。The resin coating amount of the obtained sand was 2% by weight, and as shown in FIG. 1, an amorphous resin was adhered to the surface, and the resin adhesion thickness was about 9%.
実施例2として、実施例1のSDRに変えて、官能基を
有さない通常の5DR46%水性エマルジョンを使用し
て実施例1と同様にして樹脂付着砂を製造した。この砂
も実施例1と同様に樹脂が部分的に付着した砂であった
。As Example 2, resin-attached sand was produced in the same manner as in Example 1 except that instead of the SDR of Example 1, a normal 5DR 46% aqueous emulsion having no functional groups was used. Similar to Example 1, this sand was also sand to which resin was partially attached.
比較例1として、SBRをトルエンに溶解した46%樹
脂溶液を用いて、ブロッキン防止剤を使用しないで、後
は実施例1と同様に樹脂固着砂を形成した。この砂は、
第3図に示すように粒子画像が白っぽく、均一に樹脂被
膜で被覆されていた。As Comparative Example 1, resin-bound sand was formed in the same manner as in Example 1, using a 46% resin solution in which SBR was dissolved in toluene, but without using an antiblocking agent. This sand is
As shown in FIG. 3, the particle image was whitish and uniformly covered with a resin film.
比較例2として、通常の砂を用意した。As Comparative Example 2, ordinary sand was prepared.
第1表に、これらの各種砂を使用したグランドの3力月
実用後の結果を示す。Table 1 shows the results after three months of practical use of the ground using these various sands.
第1表から明らかなように、実施例1のものは3力月後
においてもクツション性も柔軟性も抜群に優れていたが
、実施例2のものは架橋型の樹脂でないだけに充填当初
の機能は実施例1と同レベルであったが、3力月後では
表に示すようにSBRが脱落して細く粉砕されてグラン
ドの柔軟性が低下してきた。As is clear from Table 1, the product of Example 1 had excellent cushioning properties and flexibility even after 3 months, but the product of Example 2 had excellent cushioning properties and flexibility even after 3 months, but since the product of Example 2 was not a cross-linked resin, it The functionality was at the same level as in Example 1, but after 3 months, the SBR fell off and was crushed into fine pieces, reducing the flexibility of the gland, as shown in the table.
これらの実施例に対して比較例1および2のものは格段
に劣る結果を示した。Compared to these Examples, Comparative Examples 1 and 2 showed significantly inferior results.
第1表
表中
クツション性: JIS Z−0235の「包装用緩衝
材料の動的圧縮試験法」に準じて最大加速度(G)を測
定して評価した。Cushioning properties in Table 1: Evaluation was performed by measuring the maximum acceleration (G) according to JIS Z-0235 "Dynamic compression test method for cushioning materials for packaging".
すなわち、加速度計を内蔵する、重さ3 kgの正方形
(20X20cm)の鋼製荷重をマグネットで保持し、
30cm下の試料砂を載置する支持台に自然落下させて
、該荷重が受ける衝撃を最大加速度に換算して評価した
。試料砂は、鋼製箱内に厚さ15mm一定に敷き詰めた
ものを使用した。In other words, a square (20 x 20 cm) steel load weighing 3 kg with a built-in accelerometer is held with a magnet.
The sample sand was allowed to fall 30 cm below onto a support stand on which the sample sand was placed, and the impact received by the load was converted into maximum acceleration for evaluation. The sample sand was spread in a steel box with a constant thickness of 15 mm.
柔軟性: JIS A−1216の「土の一軸圧縮試験
法」に基づいて圧縮応力を測定して評価した(単位:
kg/crl’)。Flexibility: Evaluated by measuring compressive stress based on JIS A-1216 "Unconfined compression test method for soil" (unit:
kg/crl').
[発明の効果]
本発明は、クツション性ならびに柔軟性に優れたグラン
ドを提供するための砂であって、適当な滑りとクツショ
ン性により、足や腰を痛めない優れた効果を発揮する。[Effects of the Invention] The present invention provides sand for providing a ground with excellent cushioning properties and flexibility, and exhibits an excellent effect of not hurting the feet or lower back due to appropriate slippage and cushioning properties.
第1図は、本発明の人工芝生用砂の粒子構造の一例を示
す拡大写真図である。第2図は第1図の模式図である。
第3図は、比較例1で得られた均一樹脂被膜を有する砂
の粒子構造を示す拡大写真図である。
1:抄本体
2:樹脂
特許出願人 東 し 株 式 会 社
第1t!1FIG. 1 is an enlarged photographic diagram showing an example of the particle structure of the sand for artificial lawns of the present invention. FIG. 2 is a schematic diagram of FIG. 1. FIG. 3 is an enlarged photograph showing the particle structure of sand having a uniform resin coating obtained in Comparative Example 1. 1: Paper body 2: Resin patent applicant Higashi Shi Co., Ltd. 1st t! 1
Claims (8)
かつ該樹脂の付着量が該砂に対して0.5〜5重量%の
範囲であることを特徴とする人工芝生用砂。(1) Irregularly shaped resin is partially attached to the sand surface,
Sand for artificial lawns, characterized in that the amount of the resin attached is in the range of 0.5 to 5% by weight based on the sand.
る請求項(1)記載の人工芝生用砂。(2) The artificial lawn sand according to claim (1), wherein the resin contains an antiblocking agent.
である請求項(2)記載の人工芝生用砂。(3) The artificial lawn sand according to claim (2), wherein the antiblocking agent is a higher fatty acid or a salt thereof.
キサー中で攪拌させながら、該砂にブロッキング防止剤
の存在下で樹脂水性エマルジョンを付与することによっ
て、該砂に該樹脂の皮膜を部分的に付着させることを特
徴とする人工芝生用砂の製造方法。(4) By applying an aqueous resin emulsion to the sand in the presence of an antiblocking agent while stirring the sand that has been dried and heated at a temperature of 100 to 150°C in a mixer, a film of the resin is formed on the sand. A method for producing artificial lawn sand, characterized by partially adhering the sand.
を含有するものであるかまたは自己架橋型樹脂である請
求項(4)記載の人工芝生用砂の製造方法。(5) The method for producing sand for artificial lawns according to claim (4), wherein the resin constituting the aqueous resin emulsion contains a crosslinking agent or is a self-crosslinking resin.
脂固形分で0.5〜5重量%の範囲である請求項(4)
記載の人工芝生用砂の製造方法。(6) Claim (4) wherein the amount of the aqueous resin emulsion applied is in the range of 0.5 to 5% by weight of the resin solid content based on the sand.
The method for producing sand for artificial lawns as described.
001〜5重量%の範囲である請求項(4)記載の人工
芝生用砂の製造方法。(7) The amount of anti-blocking agent applied is 0.
The method for producing artificial lawn sand according to claim 4, wherein the content is in the range of 0.001 to 5% by weight.
いて、該砂が表面に部分的に樹脂が付着されたものであ
ることを特徴とする人工芝生構造体。(8) An artificial lawn structure in which the grass grains are filled with sand, characterized in that the sand has a resin partially attached to the surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2196539A JP2581277B2 (en) | 1990-07-25 | 1990-07-25 | Sand for artificial turf, method for producing the same, and artificial turf structure using the sand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2196539A JP2581277B2 (en) | 1990-07-25 | 1990-07-25 | Sand for artificial turf, method for producing the same, and artificial turf structure using the sand |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0483007A true JPH0483007A (en) | 1992-03-17 |
JP2581277B2 JP2581277B2 (en) | 1997-02-12 |
Family
ID=16359422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2196539A Expired - Lifetime JP2581277B2 (en) | 1990-07-25 | 1990-07-25 | Sand for artificial turf, method for producing the same, and artificial turf structure using the sand |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2581277B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005002783A (en) * | 2003-06-10 | 2005-01-06 | Mondo Spa | Filling material for artificial turf structure, corresponding artificial turf structure, and its manufacturing method |
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62132138U (en) * | 1986-02-10 | 1987-08-20 |
-
1990
- 1990-07-25 JP JP2196539A patent/JP2581277B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62132138U (en) * | 1986-02-10 | 1987-08-20 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005002783A (en) * | 2003-06-10 | 2005-01-06 | Mondo Spa | Filling material for artificial turf structure, corresponding artificial turf structure, and its manufacturing method |
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 |
Also Published As
Publication number | Publication date |
---|---|
JP2581277B2 (en) | 1997-02-12 |
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