JP2015203262A - Floor material - Google Patents

Floor material Download PDF

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JP2015203262A
JP2015203262A JP2014084022A JP2014084022A JP2015203262A JP 2015203262 A JP2015203262 A JP 2015203262A JP 2014084022 A JP2014084022 A JP 2014084022A JP 2014084022 A JP2014084022 A JP 2014084022A JP 2015203262 A JP2015203262 A JP 2015203262A
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base material
modulus
substrate
thickness
flooring
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JP6376819B2 (en
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寛一 尼崎
Kanichi Amasaki
寛一 尼崎
純一 高野
Junichi Takano
純一 高野
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Noda Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a floor material for wooden house capable of exhibiting satisfactory impact absorption performance even when being fixed to a wooden underfloor with nails to thereby prevent falling accident of the elderly in the wooden house.SOLUTION: A floor material 1 includes from a surface side: a first base material 2; a second base material 3; a cushioning material 4; and a wooden base 5, which are laminated each other in this order. The first base material is 1.0-3.0 mm in thickness, and 2500-6000 N/mmin bending Young's modulus. The second base material is 0.5-3.0 mm in thickness, and 500-4000 N/mmin bending Young's modulus. The bending Young's modulus of the first base material is 0.5-5 times the bending Young's modulus of the second base material. The cushioning material is 1.5-4.0 mm in thickness, and 20-70 degrees in Asker C hardness. The floor material has a satisfactory performance as an impact absorption floor and ensures the impact absorption performance even when being fixed to a wooden underfloor with nails in a wooden house.

Description

本発明は床材に関し、特に衝撃吸収性能に優れた床材に関する。 The present invention relates to a flooring, and more particularly to a flooring excellent in shock absorbing performance.

床材が敷設された室内で高齢者や障害者などが転倒したときに床材からの衝撃で怪我をする事故が頻発しており、骨折などの重傷を負うケースも多い。このため、転倒の際に床材からの衝撃を小さくするような機能すなわち衝撃吸収性能を持った床材の開発が望まれている。日本建築学会床工事WGの報告によれば、JIS A 6519の測定方法により測定した最大加速度の値が100G以下であれば、人間が転倒して頭などを床にぶつけた際であっても怪我を負いにくいものとされている。 There are frequent accidents in which injuries are caused by the impact of flooring when an elderly person or a disabled person falls in the room where the flooring is laid, and there are many cases of serious injury such as broken bones. For this reason, it is desired to develop a flooring material having a function of reducing the impact from the flooring material when it falls, that is, a shock absorbing performance. According to a report from the Architectural Institute of Japan Floor Work WG, if the maximum acceleration value measured by the measurement method of JIS A 6519 is 100G or less, even if a person falls and hits the head etc. It is said that it is hard to bear.

このような背景から、出願人は、表面側から第一基材A、第一緩衝材B、第二基材C、第二緩衝材Dの順に積層されてなる床材において、各積層材の厚さおよび/またはアスカーC硬度を特定の範囲に限定することにより、上記測定による最大加速度100G以下の衝撃吸収性能を与えることができることを知見し、特許出願を行うに至った。これらが下記特許文献1〜4に開示されている。 From such a background, the applicant, in the floor material that is laminated in the order of the first base material A, the first buffer material B, the second base material C, the second buffer material D from the surface side, By limiting the thickness and / or Asker C hardness to a specific range, it was found that shock absorption performance with a maximum acceleration of 100 G or less by the above measurement can be given, and a patent application was filed. These are disclosed in the following Patent Documents 1 to 4.

特開2012−36654号公報JP 2012-36654 A 特開2012−41675号公報JP 2012-41675 A 特開2012−41742号公報JP 2012-41742 A 特開2012−46899号公報JP 2012-46899 A

特許文献1〜4に開示された従来技術による木質床材は、高齢者施設において、コンクリートスラブ上に接着剤や両面テープなどで固定して衝撃吸収フロアとして使用するのは好適なものであるが、最裏層に緩衝材(第二緩衝材D)が用いられるため、木質の床下地Eに対して釘固定することができない。釘Fで固定すると、第二緩衝材Dが圧縮されてしまい、本来の衝撃吸収性能を発揮することができなくなる(図4)。このため、これら従来技術による木質床材は、木造住宅において木製床下地上に貼着して使用することができなかった。 Although the wooden flooring by the prior art disclosed by patent documents 1-4 is suitable for an elderly person's facility, it is suitable to use it as an impact-absorbing floor by fixing it with an adhesive or a double-sided tape on a concrete slab. Since the cushioning material (second cushioning material D) is used as the outermost layer, it cannot be fixed to the wooden floor base E with nails. If it fixes with the nail F, the 2nd shock absorbing material D will be compressed and it will become impossible to exhibit original shock absorption performance (FIG. 4). For this reason, the wooden flooring by these prior arts cannot be stuck and used on a wooden floor foundation | substrate in a wooden house.

しかしながら、高齢者の転倒による死亡事故は、高齢者が居住する自宅(木造家屋)で多発しているのが実情であり、これを未然に防止するべく、木造家屋において木製床下地に施工しても十分な衝撃吸収性能を発揮する床材の開発が望まれるが、現在までのところ、有効な解決策が見出せていない。 However, there are many fatal accidents caused by the fall of elderly people at homes (wooden houses) where elderly people live, and in order to prevent this, it is necessary to construct a wooden floor foundation in a wooden house. Although it is desired to develop a floor material that exhibits sufficient shock absorption performance, no effective solution has been found so far.

したがって、本発明が解決しようとする課題は、木造家屋において木製床下地に釘打ち固定しても十分な衝撃吸収性能を発揮する床材を提供し、木造家屋における高齢者の転倒事故を防止することである。 Therefore, the problem to be solved by the present invention is to provide a flooring material that exhibits sufficient shock absorbing performance even when nailing and fixing to a wooden floor base in a wooden house, and prevents an elderly person from falling over in a wooden house. That is.

この課題を解決するため、請求項1に係る本発明は、表面側から第一基材、第二基材および緩衝材が順次に積層されてなる床材であって、第一基材は厚さが1.0〜3.0mmであり、第二基材は厚さが0.5〜3.0mmであり、第一基材の曲げヤング係数は第二基材の曲げヤング係数の0.5〜5倍であることを特徴とする。 In order to solve this problem, the present invention according to claim 1 is a flooring in which a first base material, a second base material, and a cushioning material are sequentially laminated from the surface side. The second substrate has a thickness of 0.5 to 3.0 mm, and the bending modulus of the first substrate is 0. 0 of the bending modulus of the second substrate. It is 5 to 5 times.

請求項2に係る本発明は、請求項1記載の床材において、緩衝材は厚さが1.5〜4.0mmであってアスカーC硬度が20〜70度であることを特徴とする。 According to a second aspect of the present invention, in the flooring according to the first aspect, the cushioning material has a thickness of 1.5 to 4.0 mm and an Asker C hardness of 20 to 70 degrees.

請求項3に係る本発明は、請求項1または2記載の床材において、第一基材は曲げヤング係数が2500〜6000N/mmであり、第二基材は曲げヤング係数が500〜4000N/mmであることを特徴とする。 The present invention according to claim 3, The flooring according to claim 1 or 2, wherein the first substrate bending Young's coefficient is 2500~6000N / mm 2, Young's modulus and the second substrate bending 500~4000N / Mm 2 .

請求項4に係る本発明は、請求項1ないし3のいずれか記載の床材において、第一基材および第二基材からなる複合基材としての曲げヤング係数が1500〜5500N/mmであることを特徴とする。 According to a fourth aspect of the present invention, in the flooring according to any one of the first to third aspects, the bending Young's modulus as a composite base material composed of the first base material and the second base material is 1500 to 5500 N / mm 2 . It is characterized by being.

請求項5に係る本発明は、請求項1ないし4のいずれか記載の床材において、緩衝材の裏面側に木質基板が積層されてなることを特徴とする。 The present invention according to claim 5 is characterized in that, in the flooring material according to any one of claims 1 to 4, a wooden substrate is laminated on the back side of the cushioning material.

本発明は、請求項1に記載されるように、表面側から第一基材/第二基材/緩衝材の積層構成を有する床材において、第一基材および第二基材のそれぞれについて厚さを特定の範囲に限定すると共に、これらの曲げヤング係数が特定の関係にあることを限定することによって床材表面が受ける衝撃を大きく吸収する効果を発揮する。 As described in claim 1, the present invention relates to each of the first base material and the second base material in the floor material having the laminated structure of the first base material / the second base material / the buffer material from the surface side. By limiting the thickness to a specific range and limiting that the bending Young's modulus is in a specific relationship, the effect of greatly absorbing the impact on the floor material surface is exhibited.

より詳しくは、本発明の床材において、第一基材として厚さが1.0〜3.0mmであるものを使用すると共に、第二基材として厚さが0.5〜3.0mmであるものを使用すると共に、第一基材の曲げヤング係数が第二基材の曲げヤング係数の0.5〜5倍であるような関係を満たすことにより、床材表面が衝撃を受けたときにこれらが一体となって撓んで緩衝材に適度な沈み込みを生じさせるので、緩衝材本来の性能が発揮され、衝撃吸収性能に優れた床材とすることができる。 More specifically, in the flooring of the present invention, the first base material having a thickness of 1.0 to 3.0 mm is used, and the second base material is 0.5 to 3.0 mm in thickness. When using a certain material and satisfying the relationship that the bending Young's modulus of the first base material is 0.5 to 5 times the bending Young's modulus of the second base material, Since these are bent together and cause moderate sinking in the cushioning material, the original performance of the cushioning material is exhibited and a flooring material excellent in shock absorbing performance can be obtained.

また、基材が第一基材と第二基材とからなる複合基材として構成されるので、第一基材と第二基材とに異なる材料を用いることができる。たとえば、床材の最表面側に位置する第一基材には、上記厚さおよび曲げヤング係数を有する材料の中から床材の表面板として好適なものを任意に選択して用いることができ、たとえば木質材を用いることにより木質床材として構成することができる。 Moreover, since a base material is comprised as a composite base material which consists of a 1st base material and a 2nd base material, a different material can be used for a 1st base material and a 2nd base material. For example, as the first base material located on the outermost surface side of the flooring material, a material suitable for the surface plate of the flooring material can be arbitrarily selected from the materials having the above thickness and bending Young's modulus. For example, it can comprise as a wooden floor material by using a wooden material.

上記の作用効果は、厚さを1.5〜4.0mmであってアスカーC硬度が20〜70度である緩衝材を用いることによって(請求項2)、または曲げヤング係数が2500〜6000N/mmである第一基材を用いると共に曲げヤング係数が500〜4000N/mmである第二基材を用いることによって(請求項3)、または第一基材および第二基材からなる複合基材としての曲げヤング係数を1500〜5500N/mmとすることによって(請求項4)、より顕著に発揮させることができる。 The above effect is obtained by using a cushioning material having a thickness of 1.5 to 4.0 mm and an Asker C hardness of 20 to 70 degrees (Claim 2), or a bending Young's modulus of 2500 to 6000 N / By using a first substrate having a mm 2 and a second substrate having a bending Young's modulus of 500 to 4000 N / mm 2 (Claim 3), or a composite comprising the first substrate and the second substrate By making the bending Young's modulus as a base material 1500-5500 N / mm < 2 > (Claim 4), it can be made to exhibit more notably.

本発明の床材は、第一基材/第二基材/緩衝材の3層で優れた衝撃吸収性能を与えるので、最裏面側にさらに木質基板を積層した積層構成を採用することにより、衝撃吸収性能を何ら損なうことなく、この木質基板の厚さ範囲内において釘打ちして木製床下地に固定することができる。すなわち、請求項5による床材は、木造家屋において木製床下地に施工しても十分な衝撃吸収性能を発揮することができ、木造家屋における高齢者の転倒事故防止に効果的である。 Since the floor material of the present invention gives excellent shock absorption performance with three layers of the first base material / second base material / buffer material, by adopting a laminated structure in which a wooden substrate is further laminated on the outermost surface side, Without impairing the impact absorbing performance, it is possible to nail within the thickness range of the wooden substrate and fix it to the wooden floor substrate. That is, the flooring according to claim 5 can exhibit sufficient shock absorbing performance even when constructed on a wooden floor foundation in a wooden house, and is effective in preventing a fall accident of an elderly person in a wooden house.

本発明の一実施形態による床材の構成を示す断面図である。It is sectional drawing which shows the structure of the flooring by one Embodiment of this invention. 本発明の他実施形態による床材の構成を示す断面図である。It is sectional drawing which shows the structure of the flooring by other embodiment of this invention. 図2の床材を木製床下地に釘固定した状態を示す断面図である。It is sectional drawing which shows the state which fixed the nail | claw to the wooden floor base material of the flooring of FIG. 従来技術による床材を木製床下地に釘固定した状態を示す断面図である。It is sectional drawing which shows the state which carried out the nail fixation of the flooring by a prior art to the wooden floor base.

図1を参照しながら本発明の一実施形態による床材の構成について説明する。この床材1は、図1に示すように、表面側から第一基材2/第二基材3/緩衝材4の順に積層された積層構成を有する。この構成の床材1は、コンクリート建築物においてコンクリートスラブなどの硬質床下地上に接着剤や両面テープなどで固定して衝撃吸収フロアとして使用することができる。 A configuration of a flooring according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the flooring 1 has a laminated structure in which the first base material 2 / second base material 3 / buffer material 4 are laminated in this order from the surface side. The flooring 1 having this configuration can be used as an impact absorbing floor by fixing it with an adhesive or double-sided tape on a hard floor foundation such as a concrete slab in a concrete building.

第一基材2は、厚さが1.0〜3.0mmであると共に好ましくは曲げヤング係数が2500〜6000N/mmであり、これらの条件を満たすものの中から任意に選択することができる。第一基材2としては、たとえばMDF、HDFなどの木質繊維板、合板、無垢材、積層板、集成材などの木質材であって、その表面に任意に化粧紙、突板、オレフィンシートなどの合成樹脂シートなどによる化粧シートが貼着されたものを用いることができる。また、第一基材2の表面、または該表面に貼着された化粧シートの表面に任意塗装が施されたものを用いても良い。塗装は、防滑性能を有する防滑性塗料を用いて行うことが好ましい。 The first substrate 2 has a thickness of 1.0 to 3.0 mm and preferably has a bending Young's modulus of 2500 to 6000 N / mm 2 and can be arbitrarily selected from those satisfying these conditions. . Examples of the first base material 2 include wood fiber boards such as MDF and HDF, wood boards such as plywood, solid wood, laminated board, and laminated wood. A sheet to which a decorative sheet such as a synthetic resin sheet is attached can be used. Moreover, you may use what gave arbitrary coating to the surface of the 1st base material 2, or the surface of the decorative sheet affixed on this surface. The coating is preferably performed using an anti-slip paint having anti-slip performance.

第二基材3は、厚さが0.5〜3.0mmであると共に好ましくは曲げヤング係数が500〜4000N/mmであり、これらの条件を満たすものの中から任意に選択することができる。第二基材3としては、たとえばポリエチレン、ポリプロピレン、塩化ビニル、PET、ABSなどの硬質プラスチックや低発泡プラスチックが好適に用いられる。 The second substrate 3 has a thickness of 0.5 to 3.0 mm and preferably a bending Young's modulus of 500 to 4000 N / mm 2 and can be arbitrarily selected from those satisfying these conditions. . As the 2nd base material 3, hard plastics and low foaming plastics, such as polyethylene, a polypropylene, vinyl chloride, PET, ABS, are used suitably, for example.

第一基材2の曲げヤング係数は第二基材3の曲げヤング係数の0.5倍〜5倍である。第一基材2の曲げヤング係数が第二基材3の曲げヤング係数の0.5倍未満であると、衝撃に対して第一基材および第二基材の変形が過大になり、緩衝材が沈み込んで限界まで圧縮されてしまい、その下層の床下地(図2の実施例では木質基板5)から衝撃の反力を受けてG値が大きくなる。また、第一基材2の曲げヤング係数が第二基材3の曲げヤング係数の5倍を超えると、衝撃に対して第一基材および第二基材の変形が過小になり、緩衝材がほとんど沈み込まないため緩衝材本来の衝撃吸収性能を発揮することができず、G値が大きくなる。 The bending Young's modulus of the first substrate 2 is 0.5 to 5 times the bending Young's modulus of the second substrate 3. When the bending Young's modulus of the first base material 2 is less than 0.5 times the bending Young's modulus of the second base material 3, the deformation of the first base material and the second base material becomes excessive with respect to the impact, and the buffering The material sinks and is compressed to the limit, and the G value increases due to the reaction force of the impact from the underlying floor (wood substrate 5 in the embodiment of FIG. 2). Moreover, when the bending Young's modulus of the 1st base material 2 exceeds 5 times the bending Young's modulus of the 2nd base material 3, the deformation | transformation of a 1st base material and a 2nd base material will become small with respect to an impact, and a buffer material Hardly sinks, the shock absorbing performance inherent in the shock absorbing material cannot be exhibited, and the G value increases.

緩衝材4は、たとえばポリビニルアルコール(PVA)、エチレン−ビニルアルコール共重合体(EVOH)、ポリエチレン(PE)などの合成樹脂発泡体や、合成ゴム、天然ゴムなどのゴム発泡体からなり、アスカーC硬度が20〜70度のものが使用される。アスカーC硬度が20度未満であると、柔らかすぎて歩行時の沈み込みが大きくなり、不快感を与える。また、人が転倒した場合に第一基材2から受ける衝撃を十分に緩衝することができず、転倒した人の頭などがその下層の第二基材3に強く打ち付けられる危険性がある。一方、アスカーC硬度が70度より大きくなると、緩衝材として硬すぎるものとなって衝撃吸収作用を十分に発揮することができない。これらの要因から、第一緩衝材3のアスカーC硬度範囲は20〜70度であり、好ましくは25〜60度である。 The buffer material 4 is made of, for example, a synthetic resin foam such as polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), or polyethylene (PE), or a rubber foam such as synthetic rubber or natural rubber. Those having a hardness of 20 to 70 degrees are used. If the Asker C hardness is less than 20 degrees, it is too soft and the sinking during walking increases, resulting in discomfort. Further, when a person falls, the impact received from the first base material 2 cannot be sufficiently buffered, and there is a risk that the head of the person who has fallen or the like will be strongly struck against the second base material 3 underneath. On the other hand, if the Asker C hardness is larger than 70 degrees, it becomes too hard as a buffer material and cannot sufficiently exhibit the impact absorbing function. From these factors, the Asker C hardness range of the first buffer material 3 is 20 to 70 degrees, preferably 25 to 60 degrees.

緩衝材4の厚さは1.5〜4.0mmであることが好ましい。緩衝材4の厚さが1.5mm未満では衝撃吸収性能が不十分となり、床の硬さ試験において100G以下の値を得ることが困難になる。4.0mmより厚くなると、第一基材2が衝撃を受けた際に第一基材2の撓みが大きくなり、第一基材2が割れてしまうおそれがある。 The thickness of the cushioning material 4 is preferably 1.5 to 4.0 mm. If the thickness of the cushioning material 4 is less than 1.5 mm, the impact absorbing performance becomes insufficient, and it becomes difficult to obtain a value of 100 G or less in the floor hardness test. If the thickness is greater than 4.0 mm, the first base material 2 may bend when the first base material 2 is impacted, and the first base material 2 may be broken.

図2は本発明の他実施形態による床材1を示す。この床材1は、図1の床材1の緩衝材4の裏面側に木質基板5を積層させたものであって、表面側から第一基材2/第二基材3/緩衝材4/木質基板5の順に積層された積層構成を有する。木質基板5は、第一基材2と同様の、たとえばMDF、HDFなどの木質繊維板、合板(針葉樹合板、広葉樹合板)、無垢材、積層板、集成材などの木質材からなる。 FIG. 2 shows a flooring 1 according to another embodiment of the present invention. This flooring 1 is obtained by laminating a wooden substrate 5 on the back side of the cushioning material 4 of the flooring 1 in FIG. 1, and the first base material 2 / second base material 3 / buffering material 4 from the front surface side. / Wood substrate 5 is laminated in that order. The wood substrate 5 is made of a wood material such as a wood fiber board such as MDF or HDF, plywood (softwood plywood, hardwood plywood), solid wood, laminated board, laminated wood, and the like, similar to the first base material 2.

木質基板5には、施工時に隣接する床材と嵌合する実(雄実6、雌実7)を四周木口面に形成するために厚さを大きく取る必要があり、たとえば5.0〜10.0mmの厚さとする。厚さが5.0mm未満ではこの厚さ範囲に実を形成することが困難となる。10.0mmより厚くなると、床材1の全体厚が大きくなりすぎてしまい、衝撃吸収性能を必要としない部屋との床施工高さに段差が生じやすくなる。 The wood substrate 5 needs to have a large thickness in order to form the fruit (male 6, female 7) that fits with the floor material adjacent at the time of construction on the quadrant wood mouth, for example, 5.0 to 10 The thickness is 0 mm. If the thickness is less than 5.0 mm, it is difficult to form fruit in this thickness range. When it becomes thicker than 10.0 mm, the entire thickness of the flooring 1 becomes too large, and a level difference is likely to occur in the floor construction height with a room that does not require shock absorbing performance.

図3は、図2の床材1を木製床下地8に対して釘9で固定した施工状態を示す。この床材1は最裏面が木質基板5で構成され、従来技術による床材(図4)のように緩衝材(第二緩衝材D)を有していないので、釘固定しても緩衝材の圧縮による衝撃吸収性能の低下を招くことがない。 FIG. 3 shows a construction state in which the flooring 1 of FIG. 2 is fixed to the wooden floor base 8 with nails 9. Since this floor material 1 is composed of a wooden substrate 5 on the outermost surface and does not have a cushioning material (second cushioning material D) like the flooring material according to the prior art (FIG. 4), the cushioning material is secured even if nail fixing The impact absorption performance is not deteriorated by the compression of.

以下、本発明の実施例を比較例と対比して説明することにより、本発明の構成および作用効果をより具体的に実証する。なお、本発明は下記の実施例に限定されるものではなく、特許請求の範囲の記載によって定義される発明の範囲内において様々な変形・変更が許容されることは言うまでもない。 Hereinafter, the configuration and operational effects of the present invention will be more specifically demonstrated by describing examples of the present invention in comparison with comparative examples. In addition, this invention is not limited to the following Example, It cannot be overemphasized that various deformation | transformation and change are accept | permitted within the range of the invention defined by description of a claim.

図1に示す第一基材2/第二基材3/緩衝材4の積層構成を有する床材1において、第一基材2として厚さ1mm、曲げヤング係数3000N/mmであるMDFを用い、第二基材3として厚さ2mm、曲げヤング係数2000N/mmであるポリプロピレン樹脂板を用い(第一基材2の曲げヤング係数/第二基材3の曲げヤング係数=1.5であり、これらの複合基材としての曲げヤング係数は2500N/mmであった)、緩衝材4として厚さ2.5mm、アスカーC硬度50度であるポリエチレン10倍発泡体を用いたものを実施例1とし、第一基材2として厚さ2mm、曲げヤング係数3000N/mmであるMDFを用いると共に第二基材3として厚さ3mm、曲げヤング係数2000N/mmであるポリプロピレン樹脂板を用いたほかは実施例1と同様にしたものを実施例2とし、緩衝材として厚さ2.5mm、アスカーC硬度15度であるポリウレタン20倍発泡体を用いたほかは実施例1と同様にしたものを実施例3とし、緩衝材として厚さ2.5mm、アスカーC硬度5度であるポリウレタン30倍発泡体を用いたほかは実施例1と同様にしたものを比較例1とし、実施例1から第二基材3を省略したものを比較例2として、これらについてJIS A 6519の測定方法により最大加速度Gを測定して衝撃吸収性能を評価した。この結果が表1に示されており、比較例1,2に比べて実施例1,2は100以下のG値を有し、実施例3もほぼ同等のG値を有するものであって、いずれも優れた衝撃吸収性能を発揮することが確認された。 In the flooring 1 having the laminated structure of the first base material 2 / the second base material 3 / the buffer material 4 shown in FIG. 1, the MDF having a thickness of 1 mm and a bending Young's modulus of 3000 N / mm 2 is used as the first base material 2. A polypropylene resin plate having a thickness of 2 mm and a bending Young's modulus of 2000 N / mm 2 is used as the second substrate 3 (the bending Young's modulus of the first substrate 2 / the bending Young's modulus of the second substrate 3 = 1.5). The bending Young's modulus as these composite base materials was 2500 N / mm 2 ), and the cushioning material 4 was made of a 10-fold polyethylene foam having a thickness of 2.5 mm and an Asker C hardness of 50 degrees. as example 1, the thickness of the first substrate 2 2 mm, 3mm thick as the second substrate 3 with use of a bending Young's coefficient 3000N / mm 2 MDF, a bending Young's coefficient 2000N / mm 2 polypropylene Example 2 is the same as Example 1 except that a resin plate is used, and Example 1 except that a polyurethane 20-fold foam having a thickness of 2.5 mm and an Asker C hardness of 15 degrees is used as a buffer material. Example 3 was used as Comparative Example 1 except that a polyurethane 30-fold foam having a thickness of 2.5 mm and Asker C hardness of 5 degrees was used as the buffer material. In Example 1, in which the second base material 3 was omitted, as Comparative Example 2, the maximum acceleration G was measured by the measuring method of JIS A6519, and the impact absorbing performance was evaluated. This result is shown in Table 1. Compared with Comparative Examples 1 and 2, Examples 1 and 2 have a G value of 100 or less, and Example 3 also has a substantially equivalent G value, It was confirmed that both exhibited excellent shock absorbing performance.

表2は、図2に示す第一基材2/第二基材3/緩衝材4/木質基板5の積層構成を有する床材1において、第一基材2として厚さ1mm、曲げヤング係数3000N/mmであるMDFを用い、第二基材3として厚さ2mm、曲げヤング係数2000N/mmであるポリプロピレン樹脂板を用い(第一基材2の曲げヤング係数/第二基材3の曲げヤング係数=1.5であり、これらの複合基材としての曲げヤング係数は2500N/mmであった)、緩衝材4として厚さ2.5mm、アスカーC硬度50度であるポリエチレン10倍発泡体を用い、木質基板5として厚さ7.5mmの針葉樹合板を用いたものを実施例4とし、第一基材2として厚さ2mm、曲げヤング係数3000N/mmであるMDFを用いると共に第二基材3として厚さ3mm、曲げヤング係数2000N/mmであるポリプロピレン樹脂板を用いたほかは実施例4と同様にしたものを実施例5とし、緩衝材として厚さ2.5mm、アスカーC硬度15度であるポリウレタン20倍発泡体を用いたほかは実施例4と同様にしたものを実施例6とし、緩衝材として厚さ2.5mm、アスカーC硬度5度であるポリウレタン30倍発泡体を用いたほかは実施例4と同様にしたものを比較例3とし、実施例4から第二基材3を省略したものを比較例4として、これらについてJIS A 6519の測定方法により最大加速度Gを測定して衝撃吸収性能を評価した。この結果が表2に示されており、比較例3,4に比べて実施例4,5は100以下のG値を有し、実施例6もほぼ同等のG値を有するものであって、いずれも優れた衝撃吸収性能を発揮することが確認された。 Table 2 shows the floor material 1 having a laminated structure of the first base material 2 / second base material 3 / buffer material 4 / wood substrate 5 shown in FIG. The MDF of 3000 N / mm 2 is used, and the second substrate 3 is a polypropylene resin plate having a thickness of 2 mm and a bending Young's modulus of 2000 N / mm 2 (the bending Young's modulus of the first substrate 2 / the second substrate 3 The bending Young's modulus of these was 1.5, and the bending Young's modulus of these composite substrates was 2500 N / mm 2 ), and the cushioning material 4 had a thickness of 2.5 mm and an Asker C hardness of 50 degrees. A double foam is used, and a wood substrate 5 using a 7.5 mm thick softwood plywood is taken as Example 4, and MDF with a thickness of 2 mm and a bending Young's modulus of 3000 N / mm 2 is used as the first base material 2. And second base material 3 Example 5 is the same as Example 4 except that a polypropylene resin plate having a thickness of 3 mm and a bending Young's modulus of 2000 N / mm 2 is used as Example 5. The buffer material is 2.5 mm thick and Asker C hardness is 15 degrees. Except for using a polyurethane 20-fold foam, Example 6 was used in the same manner as in Example 4, and a polyurethane 30-fold foam having a thickness of 2.5 mm and an Asker C hardness of 5 degrees was used as a cushioning material. Otherwise, the same as in Example 4 is used as Comparative Example 3, and the second base material 3 is omitted from Example 4 as Comparative Example 4, and the maximum acceleration G is measured by the measuring method of JIS A6519. The impact absorption performance was evaluated. This result is shown in Table 2, compared with Comparative Examples 3 and 4, Examples 4 and 5 have a G value of 100 or less, and Example 6 also has a substantially equivalent G value, It was confirmed that both exhibited excellent shock absorbing performance.

1 床材
2 第一基材
3 第二基材
4 緩衝材
5 木質基板
6 雄実
7 雌実
8 木製床下地
9 釘
DESCRIPTION OF SYMBOLS 1 Flooring material 2 1st base material 3 2nd base material 4 Buffer material 5 Wood substrate 6 Male fruit 7 Female fruit 8 Wooden floor base 9 Nail

Claims (5)

表面側から第一基材、第二基材および緩衝材が順次に積層されてなる床材であって、第一基材は厚さが1.0〜3.0mmであり、第二基材は厚さが0.5〜3.0mmであり、第一基材の曲げヤング係数は第二基材の曲げヤング係数の0.5〜5倍であることを特徴とする床材。 A flooring material in which a first base material, a second base material, and a buffer material are sequentially laminated from the surface side, and the first base material has a thickness of 1.0 to 3.0 mm, and the second base material Has a thickness of 0.5 to 3.0 mm, and the bending modulus of the first substrate is 0.5 to 5 times the bending modulus of the second substrate. 緩衝材は厚さが1.5〜4.0mmであってアスカーC硬度が20〜70度であることを特徴とする請求項1記載の床材。 The flooring material according to claim 1, wherein the cushioning material has a thickness of 1.5 to 4.0 mm and an Asker C hardness of 20 to 70 degrees. 第一基材は曲げヤング係数が2500〜6000N/mmであり、第二基材は曲げヤング係数が500〜4000N/mmであることを特徴とする請求項1または2記載の床材。 First substrate bending Young's coefficient is 2500~6000N / mm 2, according to claim 1 or 2 flooring according Young's modulus and the second substrate bending, characterized in that a 500~4000N / mm 2. 第一基材および第二基材からなる複合基材としての曲げヤング係数が1500〜5500N/mmであることを特徴とする請求項1ないし3のいずれか記載の床材。 Flooring according to any one of claims 1 to 3 bending Young's modulus of a composite substrate comprising a first substrate and the second substrate is characterized in that it is a 1500~5500N / mm 2. 緩衝材の裏面側に木質基板が積層されてなることを特徴とする請求項1ないし4のいずれか記載の床材。 The flooring material according to any one of claims 1 to 4, wherein a wooden substrate is laminated on the back side of the cushioning material.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726472U (en) * 1993-10-22 1995-05-19 ヤマハ株式会社 Sound insulation floor board
JPH0996094A (en) * 1995-10-04 1997-04-08 Kanegafuchi Chem Ind Co Ltd Sound-insulation material for floor and floor structure with the material
JP2000136579A (en) * 1998-08-26 2000-05-16 Matsushita Electric Works Ltd Panel and manufacture thereof
US20070056237A1 (en) * 2005-09-15 2007-03-15 Se-Chang Kang Floor system
JP2011190672A (en) * 2010-02-19 2011-09-29 Eidai Co Ltd Wooden floor
JP2011190673A (en) * 2010-02-19 2011-09-29 Eidai Co Ltd Wooden flooring material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726472U (en) * 1993-10-22 1995-05-19 ヤマハ株式会社 Sound insulation floor board
JPH0996094A (en) * 1995-10-04 1997-04-08 Kanegafuchi Chem Ind Co Ltd Sound-insulation material for floor and floor structure with the material
JP2000136579A (en) * 1998-08-26 2000-05-16 Matsushita Electric Works Ltd Panel and manufacture thereof
US20070056237A1 (en) * 2005-09-15 2007-03-15 Se-Chang Kang Floor system
JP2011190672A (en) * 2010-02-19 2011-09-29 Eidai Co Ltd Wooden floor
JP2011190673A (en) * 2010-02-19 2011-09-29 Eidai Co Ltd Wooden flooring material

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