JPH0480179B2 - - Google Patents
Info
- Publication number
- JPH0480179B2 JPH0480179B2 JP58249430A JP24943083A JPH0480179B2 JP H0480179 B2 JPH0480179 B2 JP H0480179B2 JP 58249430 A JP58249430 A JP 58249430A JP 24943083 A JP24943083 A JP 24943083A JP H0480179 B2 JPH0480179 B2 JP H0480179B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- elastic
- floor structure
- floor
- sports facilities
- 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 - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 49
- 239000002344 surface layer Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 229920001451 polypropylene glycol Polymers 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 239000004636 vulcanized rubber Substances 0.000 claims description 8
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 5
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000008187 granular material Substances 0.000 description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- -1 3,3-dichloro-4,4-diaminophenylamine Chemical compound 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Floor Finish (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
【発明の詳細な説明】
この発明は体育施設用等の弾性床構造の改良に
関するものであり、さらに詳述すれば、体育施設
用などの塗床としての弾性床構造であつて、従来
の木造床の性能に近似した弾力性を備えると共
に、運動安全性を改良した弾性床を得ようとする
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an elastic floor structure for a physical education facility, etc., and more specifically, an elastic floor structure for use as a coated floor for a physical education facility, etc. The objective is to obtain an elastic floor that has elasticity that approximates the performance of the floor and that improves exercise safety.
近年、体育施設用等の床にあつては、木造床に
代わるものとして、ゴム、樹脂コンクリート、樹
脂モルタル等を使用したいわゆる塗床が開発され
るに至つている。 In recent years, so-called painted floors using rubber, resin concrete, resin mortar, etc. have been developed as an alternative to wooden floors for floors for sports facilities and the like.
これら塗床としては、木造床と近似した弾性お
よび運動安全性を発揮することが要請されるもの
であり、このため当初においては、ウレタンで結
合されたゴムチツプによる弾性層をコンクリート
基礎上に形成し、この弾性層の表面にEVA等を
塗装した構造の塗床が提案されたが、この床構造
では、木造床に比べ、あまりにも硬すぎ、競技者
が転倒した場合等、非常に危険なため広く普及す
るには至らなかつた。そして、これらの欠点を是
正するため、種々の改良研究が行なわれたが、未
だ木造床と同様な特性を発揮できるまでに至つて
いないのが現状である。 These painted floors are required to exhibit elasticity and motion safety similar to those of wooden floors, so initially an elastic layer of rubber chips bonded with urethane was formed on the concrete foundation. A painted floor structure in which the surface of this elastic layer is coated with EVA, etc., has been proposed, but this floor structure is too hard compared to a wooden floor and is extremely dangerous if a player falls. It did not become widely popular. In order to correct these shortcomings, various improvement studies have been carried out, but the current situation is that it has not yet reached the point where it can exhibit the same characteristics as wooden floors.
この発明は、上述のような実情に鑑みなされた
ものであつて、従来の木造床の性能に近似した弾
力性を備えると共に、運動安全性を備えた弾性床
構造であり、その構成は、弾性材料をバインダー
として、加硫ゴム粒状物を結合し、この粒状物相
互間に空〓率20〜40％の無数の微細空〓を形成し
た厚み10〜20mmの弾性層の上面に、目止め層等の
中間層を形成し、この中間層の上面に、床表面と
なる表層を形成してなる弾性床構造であつて、こ
の表層がJIS硬度60〜95となる常温硬化性ウレタ
ンで形成され、かつ床構造体の転倒衝撃時の最大
加速度が100G以下になるよう構成されているこ
とを特徴とするものでる。 The present invention was made in view of the above-mentioned circumstances, and is an elastic floor structure that has elasticity similar to the performance of conventional wooden floors and also provides motion safety. A sealing layer is placed on the top surface of an elastic layer with a thickness of 10 to 20 mm, which is made by binding vulcanized rubber particles using the material as a binder, and forming countless microscopic voids with a void ratio of 20 to 40% between the particles. This is an elastic floor structure in which an intermediate layer such as the like is formed, and a surface layer serving as a floor surface is formed on the upper surface of this intermediate layer, and this surface layer is made of room temperature curable urethane with a JIS hardness of 60 to 95, The floor structure is also characterized by being configured such that the maximum acceleration of the floor structure during a fall impact is 100G or less.
ところで、体育施設用床の弾力性、運動安全性
評価の一方法として、表層のJIS硬度（Ｈ）、最大
加速度（αmax）および床の変形が最大に達する
までの床の変形エネルギー（Ｕ）で示すことが行
なわれており〔例えば、日本建築学会大会学術講
演梗概集（1980年）日本建築学会論文報告集
（227号、1975年参照）〕、これによれば、競技者が
転倒した時、頭部が床との衝突により受ける衝撃
加速度（α）は100G以下であるのが望ましいと
されており、木造床の場合はJIS硬度は約90で最
大加速度（αmax）は約74〜98Gの範囲であるこ
とが確認されている。 By the way, as a method for evaluating the elasticity and exercise safety of floors for physical education facilities, the JIS hardness (H) of the surface layer, the maximum acceleration (αmax), and the deformation energy (U) of the floor until the deformation of the floor reaches its maximum value are used. According to this, when a competitor falls, It is said that it is desirable that the impact acceleration (α) that the head receives when it collides with the floor is 100G or less, and in the case of wooden floors, the JIS hardness is approximately 90 and the maximum acceleration (αmax) is in the range of approximately 74 to 98G. It has been confirmed that
また、床の変形エネルギー（Ｕ）の値は大きい
方がよいが、あまり大き過ぎると（40以上）、か
えつて柔らか過ぎて床の反発力が小さくなり運動
快適性が損われる虞れがあるものである。そし
て、本発明の、上記弾性層の空〓率を20〜40％と
すると共に弾性層の厚みを10〜20mmとし、表層の
JIS硬度を60〜95の範囲で、第２図に示すように
転倒衝撃時の最大加速度を100G以下とするうえ
で好ましいという知見を得た。また、体育施設用
の床として要求される性能としては、上記の運動
安全性の他に、運動性を阻害することのないよう
な適度な反発性も要求される。特に、この反発性
に関しては、衝撃を吸収する場合の弾性床の変形
量（ストローク量）に負うところが大きい。例え
ば、床面を走行する場合を考えると、衝撃吸収時
のストローク量が大きい場合には、足をとられる
とともに足が床面に着地してから床面からの反発
力を得るまでの時間（反発時間）が長くなり過ぎ
ることに起因して、良好に走行できないといつた
問題が生じる。これに対して、本発明では、弾性
層の厚みを10〜20mmとし、その空隙率を20〜40％
に設定したので、上記の良好な衝撃吸収性を確保
しつつ、衝撃吸収時の上記ストローク量を運動性
を阻害しない範囲に規制することができる。一
方、表層のJIS硬度として60〜95の範囲に設定し
たので、実際に着地される表層が返り（反発）の
鋭いものとなり、体育施設用の床としての、運動
者の良好な運動性を確保することができる。さら
に、上記弾性層の厚み、空隙率および表層のJIS
硬度を上記範囲に設定した弾性床であれば、着地
感がソフトなのに跳ね返りが強いという、運動者
の体感上も優れた性能を得ることができる。 In addition, it is better for the deformation energy (U) of the floor to be large, but if it is too large (40 or more), the floor may become too soft and the repulsive force of the floor may be reduced, impairing the comfort of exercise. It is. In the present invention, the vacancy of the elastic layer is set to 20 to 40%, the thickness of the elastic layer is set to 10 to 20 mm, and the surface layer is
It was found that a JIS hardness in the range of 60 to 95 is preferable for keeping the maximum acceleration at 100 G or less during fall impact as shown in Figure 2. Furthermore, in addition to the above-mentioned exercise safety, the performance required for a floor for a physical education facility is also required to have appropriate resilience so as not to impede movement. In particular, this resilience is largely dependent on the amount of deformation (stroke amount) of the elastic floor when absorbing impact. For example, if we consider the case of running on a floor, if the stroke amount during shock absorption is large, the time required for the foot to be caught and the time from when the foot lands on the floor to when it receives the repulsive force from the floor ( Due to the excessively long repulsion time, the problem arises that the vehicle cannot run smoothly. In contrast, in the present invention, the thickness of the elastic layer is 10 to 20 mm, and the porosity is 20 to 40%.
Therefore, while ensuring the above-mentioned good shock absorption properties, the stroke amount during shock absorption can be regulated within a range that does not impede mobility. On the other hand, since the JIS hardness of the surface layer is set in the range of 60 to 95, the surface layer on which the person actually lands will have a sharp bounce (repulsion), ensuring good movement for athletes as a floor for sports facilities. can do. Furthermore, the thickness, porosity, and surface layer JIS of the above elastic layer
An elastic floor with hardness set within the above range can provide excellent performance for exercisers, with a soft landing feel but strong bounce.
次いで、この発明の実施態様につき、添付図面
を参照しながら以下に詳述する。 Next, embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
１はコンクリート基礎Ａ上に敷き均らした弾性
層であり、ゴムチツプ等の加硫ゴム粒状物１０を
ウレタン樹脂等の弾性材料１１をバインダーとし
て結合し、粒状物相互間に空〓率20〜40％の無数
の微細空〓を形成したものであつて、通常15mm程
度、すなわち15〜20mmの厚みに敷き均らすのが好
ましい。上記加硫ゴム粒状物１０としては、0.5
〜５mmの粒径範囲内にあると共に、粒径3.5〜4.5
mmで平均粒径４mmのものが20重量％、粒径2.0〜
3.0mmで平均粒径2.5mmのものが45重量％、粒径0.5
〜25mmで平均粒径1.5mmのものが35重量％の割合
で混在されている。 1 is an elastic layer spread evenly on the concrete foundation A, in which vulcanized rubber granules 10 such as rubber chips are bound together with an elastic material 11 such as urethane resin as a binder, and the porosity between the granules is 20 to 40. %, and is preferably spread to a thickness of about 15 mm, that is, 15 to 20 mm. As the vulcanized rubber granules 10, 0.5
~5mm particle size range and particle size 3.5~4.5
20% by weight of particles with an average particle size of 4 mm, particle size of 2.0~
45% by weight of 3.0mm and average particle size 2.5mm, particle size 0.5
~25 mm and an average particle size of 1.5 mm are mixed at a ratio of 35% by weight.
また、上記割合の加硫ゴム粒状物１０と弾性材
料１１との重量配合比はバインダーとしての弾性
材料１に対して加硫ゴム粒状物７の比率になつて
いる。２は弾性層１の上面に形成された目止め層
であり、弾性層１の凹凸表面に粒径0.8〜1.5mmの
珪砂を散布し、さらにウレタン樹脂を塗布して目
止めを施したものである。３は目止め層２の上面
に形成したレベリング層であつて、6000〜
15000cpsのセルフレベリング性ウレタン樹脂を敷
き均らして弾性層１上面を平滑に仕上げているも
のである。そして、以上の目止め層２とレベリン
グ層３とで中間層４が構成されることになる。 Further, the weight mixing ratio of the vulcanized rubber granules 10 and the elastic material 11 in the above ratio is such that the vulcanized rubber granules 7 are mixed with the elastic material 1 as a binder. 2 is a sealing layer formed on the upper surface of the elastic layer 1, which is made by scattering silica sand with a grain size of 0.8 to 1.5 mm on the uneven surface of the elastic layer 1, and then applying urethane resin to seal it. be. 3 is a leveling layer formed on the top surface of the sealing layer 2, which has a thickness of 6000 to
The upper surface of the elastic layer 1 is finished smooth by spreading a self-leveling urethane resin of 15,000 cps. Then, the above-described filling layer 2 and leveling layer 3 constitute an intermediate layer 4.
さらに５は上記中間層の上面に形成された床表
面となる表層であり、後述のような常温硬化性ウ
レタンで構成され、JIS硬度（Ｈ）が60〜95の範
囲内のものとして、より好ましくは80〜90の範囲
のものとして形成されている。そしてJIS硬度
（Ｈ）がこの範囲内のものとして、該常温硬化性
ウレタンで形成された表層５は、主として前述の
ように構成された弾性層１と相俟つて弾性床の最
大加速度（αmax）が100G以下となるように構成
されている。 Further, 5 is a surface layer formed on the upper surface of the intermediate layer, which becomes the floor surface, and is preferably made of room temperature curable urethane as described below, and has a JIS hardness (H) in the range of 60 to 95. is formed as a range of 80 to 90. Assuming that the JIS hardness (H) is within this range, the surface layer 5 formed of the room-temperature curable urethane, together with the elastic layer 1 configured as described above, has a maximum acceleration (αmax) of the elastic floor. is configured so that it is less than 100G.
即ち、表層５の材料中、主材樹脂としては、ト
リレンジイソシアネート（TDI）とポリプロピレ
ングリコール（PPG）のプレポリマーでアミン
当量600〜650のものを用い、硬化剤としては、
３，３−ジクロロ−４，４−ジアミノフエニルア
ミンを10〜15重量％含有し、充填剤（CaCO3）
を30〜40重量％含有し、PPGと可塑剤を45〜60
重量％含有してなるアミン混合物を用いる。 That is, among the materials for the surface layer 5, the main resin is a prepolymer of tolylene diisocyanate (TDI) and polypropylene glycol (PPG) with an amine equivalent of 600 to 650, and the curing agent is:
Contains 10 to 15% by weight of 3,3-dichloro-4,4-diaminophenylamine, and filler (CaCO 3 )
Contains 30-40% by weight of PPG and 45-60% of plasticizer
An amine mixture containing % by weight is used.
そして、上記主材樹脂と硬化剤を重量比として
１対１の割合で混合し、この組成物を所要厚みに
展延し、常温硬化させることにより上記表層５が
形成される。 Then, the above-mentioned surface layer 5 is formed by mixing the main resin and the curing agent at a weight ratio of 1:1, spreading this composition to a required thickness, and curing at room temperature.
なお、上記構造の弾性床(B)としては、全体の厚
みを18mm程度に形成するのが望ましい。 Note that the elastic floor (B) having the above structure is desirably formed to have a total thickness of about 18 mm.
また、目止め層２にて、弾性層１の表面の不陸
の修正を行ない、レベリング層３を特に設けない
実施も可能である。そして、この場合には通常の
チクソトロトピツク付与剤などを添加したパテ状
材料を目止め層２として用いることもできる。 Furthermore, it is also possible to correct unevenness on the surface of the elastic layer 1 with the filler layer 2 and to omit the leveling layer 3. In this case, a putty-like material to which an ordinary thixotrotopic agent is added may also be used as the sealing layer 2.
さらに、目止め層２上面に必要に応じて汚染防
止層を形成し、弾性層の加硫ゴム粒状物に含まれ
る老化防止剤等の汚染成分が表層５へと移行拡散
するのを防ぐようにする実施も可能である。 Furthermore, a contamination prevention layer is formed on the upper surface of the sealing layer 2 as necessary to prevent contaminant components such as anti-aging agents contained in the vulcanized rubber particles of the elastic layer from migrating and diffusing to the surface layer 5. It is also possible to implement
次に、実施例として下記のように構成された弾
性床(B)の弾力性、運動安全性の試験を行なつた結
果を以下に示す。 Next, as an example, the elasticity and exercise safety of the elastic floor (B) constructed as described below were tested, and the results are shown below.
先ずコンクリート基礎(A)上に前記実施態様に示
すのと同じ配合割合のゴムチツプとウレタン樹脂
を混合したものを用い弾性層１を形成した。そし
て、その上面に目止め層２、レベリング層３を順
次前記実施態様と同じ手法で形成した後、最後に
下記の主材樹脂と硬化剤の混合物を１対１の割合
で混合した組成物よりなる表層５をこのレベリン
グ層３の上面に形成した。 First, an elastic layer 1 was formed on a concrete foundation (A) using a mixture of rubber chips and urethane resin in the same proportion as shown in the above embodiment. Then, after sequentially forming a sealing layer 2 and a leveling layer 3 on the upper surface using the same method as in the above embodiment, a composition obtained by mixing the following main resin and curing agent in a 1:1 ratio is finally applied. A surface layer 5 was formed on the upper surface of this leveling layer 3.
(A) 主材樹脂
アミン当量600〜650のTDIとPPGのプレポリ
マーからなるものであつて、25℃における粘度が
6000〜10000cpsで、比重1.05±0.05であるウレタ
ン樹脂。(A) Main resin is a prepolymer of TDI and PPG with an amine equivalent of 600 to 650, and the viscosity at 25℃ is
Urethane resin with a specific gravity of 1.05±0.05 and 6000~10000cps.
(B) 硬化剤
３，３−ジクロロ−４，４−ジアミノフエニル
アミンを10〜15重量％含有し、充填剤（CaCO3）
を30〜40重量％含有し、PPGと可塑剤を45〜60
重量％含有するアミン混合物であつて、25℃にお
ける粘度が、10000〜25000で、比重が1.4±0.1の
混合物。(B) Curing agent Contains 10 to 15% by weight of 3,3-dichloro-4,4-diaminophenylamine, and filler (CaCO 3 )
Contains 30-40% by weight of PPG and 45-60% of plasticizer
% by weight, a viscosity at 25°C of 10,000 to 25,000, and a specific gravity of 1.4±0.1.
上述のように構成した弾性床について試験を行
なつた結果、表層硬度（Ｈ）は85であつて、最大
加速度（αmax）は94G、さらに床の変形エネル
ギ（Ｕ）は25Kgｍであることが判明した。そし
て、これは前記した木造床のJIS硬度、最大加速
度と近似したあるいは、それを下回るものであつ
て、競技者が転倒した時、頭部が床との衝突によ
り受ける衝撃加速度としての上限値100G以下の
ものであり、また運動快適性を損なう虞れのない
範囲のものである。 As a result of testing the elastic floor constructed as described above, it was found that the surface hardness (H) was 85, the maximum acceleration (αmax) was 94G, and the deformation energy (U) of the floor was 25Kgm. did. This is close to or lower than the JIS hardness and maximum acceleration of the wooden floor mentioned above, and is the upper limit of 100G for the impact acceleration that the head receives due to collision with the floor when an athlete falls. The following shall be met, and shall be within a range that does not pose a risk of impairing exercise comfort.
また、表層硬度（Ｈ）を60〜95の範囲内で種々
変化させて行なつた試験のいずれについても最大
加速度（αmax）は100G以下の値を示したが、特
に硬度80〜90の範囲になるよう構成したものが略
木造床と同じ範囲の値を示すものとなつた。 In addition, the maximum acceleration (αmax) showed a value of 100G or less in all of the tests conducted with the surface hardness (H) varied within the range of 60 to 95, but especially when the hardness was in the range of 80 to 90. The structure that was configured to do so showed values approximately in the same range as wooden floors.
以上のように上述のような構成を有するこの発
明は、体育施設用等の塗床として、従来の木造床
が有する運動安全性および運動者の良好な運動性
と同じ、あるいはそれ以上のものを発揮する塗床
となり、木造床に劣らない優れた弾性床構造を提
供するものである。 As described above, the present invention, which has the above-described configuration, can be used as a coated floor for physical education facilities, etc., to provide the same or better exercise safety and good mobility for athletes than conventional wooden floors. It provides an excellent elastic floor structure comparable to wooden floors.
第１図はこの発明における弾性床構造の部分断
面図を示すものである。第２図は表層の厚みを２
〜３mmとした場合の、弾性層の厚みおよび空隙率
と最大加速度との関係を示す図である。
１……弾性層、１０……加硫ゴム粒状物、１１
……弾性材料、２……目止め層、３……レベリン
グ層、４……中間層、５……ウレタン表層、Ａ…
…コンクリート基礎層、Ｂ……弾性床。
FIG. 1 shows a partial sectional view of the elastic floor structure according to the present invention. Figure 2 shows the thickness of the surface layer by 2.
It is a figure which shows the relationship between the thickness and porosity of an elastic layer, and maximum acceleration when it is set to 3 mm. 1... Elastic layer, 10... Vulcanized rubber granules, 11
... Elastic material, 2 ... Sealing layer, 3 ... Leveling layer, 4 ... Intermediate layer, 5 ... Urethane surface layer, A ...
...Concrete foundation layer, B...Elastic floor.
Claims (1)
を結合し、この粒状物相互間に空隙率20〜40％の
無数の微細空隙を形成した厚み10〜20mmの弾性層
の上面に、目止め層等の中間層を構成し、この中
間層の上面に床表面となる表層を構成してなる弾
性床構造であつて、この表層がJIS硬度60〜95と
なる常温硬化性ウレタンで形成され、かつ床構造
体の転倒衝撃時の最大加速度が100G以下になる
よう構成されていることを特徴とする体育施設用
等の弾性床構造。 ２ 常温硬化性ウレタンが下記のような主材樹脂
Ａと硬化剤Ｂとを１対１の割合で混合した組成物
からなる上記特許請求の範囲第１項記載の体育施
設用等の弾性床構造。 (A) 主材樹脂 トリレンジイソシアネート（TDI）とポリプロ
ピレングリコール（PPG）のプレ ポリマーで
アミン当量600〜650のもの。 (B) 硬化剤 ３、３−ジクロロ−４、４−ジアミノジフエニ
ルアミンを10〜15重量％含有し、充填剤
（CaCO3）を30〜40重量％含有し、PPGと可塑剤
を45〜60重量％含有するアミン混合物。 ３ 表層JIS硬度が80〜90である上記特許請求の
範囲第１項記載の体育施設用等の弾性床構造。 ４ 中間層が目止め層とレベリング層で構成され
てなる上記特許請求の範囲第１項記載の体育施設
用等の弾性床構造。 ５ 中間層が目止め層と汚染防止層で構成されて
なる上記特許請求の範囲第１項記載の体育施設用
等の弾性床構造。[Scope of Claims] 1. The upper surface of an elastic layer with a thickness of 10 to 20 mm, in which vulcanized rubber particles are bonded using an elastic material as a binder, and countless microscopic voids with a porosity of 20 to 40% are formed between the particles. It is an elastic floor structure consisting of an intermediate layer such as a sealing layer, and a surface layer that becomes the floor surface on the upper surface of this intermediate layer, and this surface layer is made of room temperature curable urethane with a JIS hardness of 60 to 95. What is claimed is: 1. An elastic floor structure for use in sports facilities, etc., characterized in that the floor structure is configured such that the maximum acceleration upon falling impact of the floor structure is 100G or less. 2. An elastic floor structure for sports facilities, etc., as set forth in claim 1, wherein the room-temperature curable urethane is composed of a composition in which a main resin A and a curing agent B as shown below are mixed in a 1:1 ratio. . (A) Main resin A prepolymer of tolylene diisocyanate (TDI) and polypropylene glycol (PPG) with an amine equivalent of 600 to 650. (B) Curing agent Contains 10 to 15% by weight of 3,3-dichloro-4,4-diaminodiphenylamine, 30 to 40% by weight of filler (CaCO 3 ), and 45 to 45% of PPG and plasticizer. Amine mixture containing 60% by weight. 3. The elastic floor structure for sports facilities and the like according to claim 1, wherein the surface layer has a JIS hardness of 80 to 90. 4. An elastic floor structure for sports facilities, etc., as set forth in claim 1, wherein the intermediate layer is composed of a sealing layer and a leveling layer. 5. An elastic floor structure for sports facilities, etc., as set forth in claim 1, wherein the intermediate layer is comprised of a sealing layer and a contamination prevention layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24943083A JPS60144459A (en) | 1983-12-29 | 1983-12-29 | Elastic floor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24943083A JPS60144459A (en) | 1983-12-29 | 1983-12-29 | Elastic floor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60144459A JPS60144459A (en) | 1985-07-30 |
| JPH0480179B2 true JPH0480179B2 (en) | 1992-12-17 |
Family
ID=17192849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24943083A Granted JPS60144459A (en) | 1983-12-29 | 1983-12-29 | Elastic floor structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60144459A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2607327B2 (en) * | 1991-12-20 | 1997-05-07 | 住友ゴム工業株式会社 | Elastic floor structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554429A (en) * | 1978-06-26 | 1980-01-12 | Kokubu Shokai | Method of laying floor plates |
-
1983
- 1983-12-29 JP JP24943083A patent/JPS60144459A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554429A (en) * | 1978-06-26 | 1980-01-12 | Kokubu Shokai | Method of laying floor plates |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60144459A (en) | 1985-07-30 |
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