JP2623398B2 - Buffer sheet and soundproof floor material using the same - Google Patents
Buffer sheet and soundproof floor material using the sameInfo
- Publication number
- JP2623398B2 JP2623398B2 JP4088009A JP8800992A JP2623398B2 JP 2623398 B2 JP2623398 B2 JP 2623398B2 JP 4088009 A JP4088009 A JP 4088009A JP 8800992 A JP8800992 A JP 8800992A JP 2623398 B2 JP2623398 B2 JP 2623398B2
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- sheet
- floor
- buffer sheet
- base material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は緩衝シート及びこれを用
いた防音床材に係り、集合住宅、ホテル等の床に敷設し
て防振、防音そしてクッション性を改善した緩衝シート
及びこれを用いた防音床材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning sheet and a sound-insulating floor material using the same, and is provided on a floor of an apartment house, a hotel, etc. to improve vibration-proofing, sound-proofing and cushioning properties, and to use the same. Soundproof flooring.
【０００２】[0002]
【従来の技術】今日、集合住宅等における階上からの衝
撃振動音、具体的には直接床面を刺激する人の足音等
が、床材等の固体に振動や衝撃を与え、それによる曲げ
波が固体中を伝播し、階下の部屋で放出すると言われて
いる。このような衝撃振動音を改良するために、柔らか
な仕上材で床に加わる衝撃力を緩和する方法、あるいは
床の曲げ剛性と質量を大きくして床構造を振動しにくく
する方法がある。前者の方法は軽量衝撃音に対して有効
であり、例えばコンクリート基材の上に、カーペットあ
るいはクッションシートなどを敷設する方法があり、ま
た後者の方法は重量衝撃音に対して有効で、例えばコン
クリートスラブの厚み等が検討されている。2. Description of the Related Art At present, impact vibration sounds from the upper floor of an apartment house or the like, specifically footsteps of a person directly stimulating the floor surface, give vibrations and impacts to solids such as flooring materials, and bending due to the vibrations. Waves are said to propagate through the solid and emit in rooms downstairs. In order to improve such an impact vibration sound, there is a method of reducing the impact force applied to the floor with a soft finishing material, or a method of increasing the bending rigidity and mass of the floor to make the floor structure hard to vibrate. The former method is effective for lightweight impact sound, for example, there is a method of laying a carpet or a cushion sheet on a concrete base material, and the latter method is effective for heavy impact sound, for example, concrete The thickness of the slab is being studied.
【０００３】しかしながら、今日、重量衝撃音は床材の
種類に関係なく、コンクリートスラブの厚み等の建築構
造枢体に影響されるので、軽量衝撃音の改良が数多くな
され、種々の床材が開発されている。例えば、特公昭５
６−２３５０９号公報に開示されている防音床材は弾性
成形板、床下地材そして床仕上材の３層構造とし、床下
地材として分割した単体を相互に接触させずに敷設して
各単片を音響的に独立させている。また、４層構造の床
材としては、例えば緩衝材の上に貫通あるいは半貫通の
スリットを設けた仕上材、可撓性薄板そして木質床化粧
板が順次積層した構成のものが特開昭６２−１５６４７
１号公報に開示されている。[0003] However, today, heavy impact noise is affected by the building structure pivot such as the thickness of the concrete slab, regardless of the type of flooring material. Have been. For example,
The soundproof flooring material disclosed in Japanese Patent Application Laid-Open No. 6-23509 has a three-layer structure of an elastic molded plate, a floor covering material, and a floor finishing material. The pieces are acoustically independent. As a floor material having a four-layer structure, for example, a finish material in which a penetrating or semi-penetrating slit is provided on a cushioning material, a flexible thin plate, and a wooden floor decorative plate are sequentially laminated. -15647
No. 1 discloses this.
【０００４】一方、今日では床材の層構造と共にこれを
構成する材料を改善することも試みられている。そのう
ち、緩衝材としてはガラスウール、ロックウール等の無
機質繊維板、またポリエチレン、エチレン−酢酸ビニル
共重合体、ポリウレタン、ポリエチレン等の有機質発泡
体が使用されている。しかし、上記緩衝材はその硬度が
小さくなる程、床衝撃音を防止する効果があるが、その
反面床上から荷重が加わった場合には圧縮変形が大きく
なり、実使用出来ない場合もあって、耐圧縮性と衝撃吸
収性を保持するためには少なくとも１０ｍｍ以上の厚さ
を必要とした。On the other hand, attempts have been made to improve the layer structure of the flooring material and the material constituting the flooring material. Among them, as the buffer material, inorganic fiber boards such as glass wool and rock wool, and organic foams such as polyethylene, ethylene-vinyl acetate copolymer, polyurethane, and polyethylene are used. However, the cushioning material has the effect of preventing floor impact noise as its hardness decreases, but on the other hand, when a load is applied from above the floor, the compressive deformation increases, and in some cases, it cannot be used in practice, In order to maintain compression resistance and shock absorption, a thickness of at least 10 mm or more was required.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、化粧合
板を使用した防音床材はある程度の遮音効果を発揮して
いるが、全周波数領域にわたると共に、特に低周波数領
域で遮音効果を発揮するものが望まれている。これを満
足する床材は今だないのが現状である。一方、緩衝材が
衝撃吸収性と耐圧縮性の両方を満足するためには少なく
とも１０ｍｍ以上の厚みを必要としたが、これは床材の
総厚みを増して建造物の床高さに制約を与えていた。ま
た、緩衝材の厚みが１０ｍｍ以上になると、そのコスト
も高くなる問題もあった。本発明はこのような点を改善
するもので、耐圧縮性とともに衝撃吸収性を有し、そし
て全周波数領域にわたって床衝撃音レベルを減少させた
緩衝シート及びこれを用いた防音床材を提供することを
目的とする。However, sound-insulating flooring made of decorative plywood exhibits a certain degree of sound insulation effect. However, it is desired that the sound-insulating floor material be used throughout the entire frequency range, and particularly exhibit a sound insulation effect in the low frequency range. It is rare. At present, there is no floor material that satisfies this. On the other hand, in order for the cushioning material to satisfy both shock absorption and compression resistance, it must have a thickness of at least 10 mm or more, but this increases the total thickness of the flooring material and limits the floor height of the building. Was giving. Further, when the thickness of the cushioning material is 10 mm or more, there is also a problem that the cost increases. The present invention has been made to solve the above problems, and provides a cushioning sheet which has shock resistance as well as compression resistance and has a reduced floor impact sound level over the entire frequency range, and a soundproof flooring using the same. The purpose is to:
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明における防音床材に付着する緩衝シートは、
緩衝シートの一方の面がシート面である基準面から窪ん
だ形状の凹部と該基準面から突出した接着部とを有し、
他方の面が***部の頂部に突出した座部を具備している
とともに、該***部が凹部と同じ位置にあり、しかも両
表面には内在する空気を連通させる空気通路がそれぞれ
形成されている。また、本発明の防音床材は、化粧合板
と基材合板とからなる合板層の片面にスリットを設け、
このスリットを有する面に緩衝シートを貼着した構成か
らなり、上記緩衝シートの内面側がシート面である基準
面から窪んだ形状の凹部と該基準面から突出して合板層
に接する接着部とを有し、一方外面側が下地面に接する
突出した座部を***部の頂部に具備しているとともに、
該***部が内面側の凹部と同じ位置にあり、しかも内面
側及び外面側には内在する空気を連通させる空気通路が
それぞれ形成されている。また、***部の頂部に設けら
れた座部が突出体であってもよい。In order to achieve the above object, a cushioning sheet adhered to a sound-insulating flooring material according to the present invention comprises:
One side of the cushioning sheet and a bonding portion that protrudes from the recess and the reference surface of the recessed from the reference surface is a sheet surface,
The other surface is provided with a protruding seat at the top of the protuberance, and the protuberance is located at the same position as the recess, and both surfaces are formed with air passages for communicating internal air. . Further, the soundproof flooring material of the present invention is provided with a slit on one side of a plywood layer composed of decorative plywood and a base material plywood,
Becomes a buffer sheet to the surface having the slits from configuration bonded, perforated and an adhesive portion which inner surface of the buffer sheet is in contact with the plywood layer protrudes from the recess and the reference surface of the recessed from the reference surface is a sheet surface And the outer surface contacts the ground surface
With a protruding seat at the top of the ridge,
The raised portion is located at the same position as the concave portion on the inner surface side, and air passages for communicating the existing air are formed on the inner surface side and the outer surface side, respectively. Further, the seat provided on the top of the raised portion may be a protrusion.
【０００７】以下、本発明を添付図面に従って説明す
る。図１は本発明の防音床材の要部断面図であり、防音
床材１は、化粧合板３とスリット５を有する基材合板４
とを積層した合板層２と、前記基材合板４のスリット５
を設けた面に緩衝シート６を順次積層した構成よりなっ
ている。上記緩衝シート６は、その内面側７において、
図３に示すように平坦なシート面からなる内側の基準面
８から窪んだ形状の凹部９と該基準面８から突出して合
板層に接する接着部１０とを有し、凹部９と接着部１０
とは格子状に規則正しく配列している。基準面８はそれ
ぞれ隣接した凹部９、接着部１０、凹部９、そして接着
部１０によって包囲されている。上記接着部１０は芯部
１１とこれを囲む同心円状のリング部１２からなり、リ
ング部１２は緩衝シート６と基材合板４との接着力を調
節するとともに、芯部１１を補強し、また緩衝シート６
のクッション性の向上に寄与している。上記接着部１０
間には空気通路１３が形成されている。これは各凹部９
に内在する空気を他の凹部９へと連通させ、緩衝シート
６のクッション性を向上させている。Hereinafter, the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of a main part of a sound-insulating flooring material of the present invention, wherein a sound-insulating flooring material 1 comprises a decorative plywood 3 and a base material plywood 4 having a slit 5.
And a slit 5 of the base material plywood 4.
The buffer sheet 6 is sequentially laminated on the surface provided with. The buffer sheet 6 has an inner surface 7
And a bonding portion 10 which contacts projecting from the flat recesses recessed from the inner side of the reference surface 8 consisting of seat surface 9 and the reference surface 8 in the plywood layers as shown in FIG. 3, the adhesive portion 10 and the recess 9
And are regularly arranged in a grid pattern. The reference plane 8 is
Adjacent recesses 9, adhesive portions 10, recesses 9, and bonding
It is surrounded by the part 10. The bonding portion 10 includes a core portion 11 and a concentric ring portion 12 surrounding the core portion. The ring portion 12 adjusts the adhesive force between the buffer sheet 6 and the base material plywood 4, reinforces the core portion 11, and Buffer sheet 6
Contributes to the improvement of cushioning properties. The bonding part 10
An air passage 13 is formed between them. This is for each recess 9
The air existing in the cushioning sheet 6 is communicated with the other concave portions 9 to improve the cushioning properties of the buffer sheet 6.
【０００８】一方、上記緩衝シート６の外面側１５、即
ち下地面１８に接する面は、図４に示すように平坦なシ
ート面からなる外側の基準面１６から突出した***部１
７が格子状に規則正しく配列され、この***部１７の頂
部には下地面１８に接する座部１９が設けられている。
座部１９は突出した円筒体あるいは棒状体であり、下地
面１８との接触面積が小さくなるように配慮され、そし
て他の領域は下地面１８から不陸して空気を連通させる
ようになっている。しかも、座部１９は緩衝シート６が
荷重を受けた場合にも、防音性が低下しないように空気
通路１３を確保するようになっている。On the other hand, the outer surface 15 of the buffer sheet 6, that is, the surface in contact with the ground surface 18, is flat as shown in FIG.
Ridge 1 protruding from outer reference surface 16 comprising
7 are regularly arranged in a grid pattern, and a top portion of the raised portion 17 is provided with a seat portion 19 that is in contact with the base surface 18.
The seat portion 19 is a protruding cylindrical body or rod-shaped body, and is designed so that the contact area with the ground surface 18 is reduced, and the other area is uneven from the ground surface 18 to allow air to communicate therewith. I have. In addition, the seat 19 secures the air passage 13 so that the soundproofness does not decrease even when the buffer sheet 6 receives a load.
【０００９】このように、前記緩衝シート６は内面側７
で局部的に基材合板４に接合し、他方外面側では***部
１７の頂部に設けた座部１９のみで下地面１１に接する
形態であるため、基材合板４から伝播する衝撃音が下地
面１８へ直接伝わりにくい状態になっている。しかも、
上記緩衝シート６の内面側７と外面側１５には内在する
空気を連通させる空気通路１３が形成されているため
に、クッション性はもとより上記空気を多量に内在させ
ていることにより衝撃音を吸収する効果もある。勿論、
上記緩衝シート６はＮＲ、ＳＢＲ、ＥＰＤＭ等のゴム、
あるいはウレタン等のエラストマーであるため、衝撃音
を一部吸収して減衰させる効果もある。As described above, the buffer sheet 6 is provided on the inner surface 7.
In the outer surface side, only the seat portion 19 provided on the top of the raised portion 17 is in contact with the ground surface 11, so that the impact sound transmitted from the base material plywood 4 is lower. It is in a state where it is difficult to directly transmit to the ground 18. Moreover,
The inner surface 7 and the outer surface 15 of the cushioning sheet 6 are provided with the air passages 13 for communicating the existing air. Therefore, not only the cushioning property but also a large amount of the air is absorbed to absorb the impact noise. There is also the effect of doing. Of course,
The buffer sheet 6 is made of rubber such as NR, SBR, EPDM, etc.
Alternatively, since it is an elastomer such as urethane, there is also an effect of partially absorbing and attenuating the impact sound.
【００１０】本発明において、上記緩衝シート６の下地
面１８への接地面積率や基材合板４への接地面積率は、
***部の頂部の設けた座部１９あるいは接着部１０の占
有面積を基材合板４の表面面積で除したものである。通
常、座部１９の接地面積率は最大１０％であり、一方接
着部１０の接地面積率は最大２０％である。これを越え
ると、衝撃音が基材合板４から下地面１１へ伝播しやす
くなり、防音性に欠ける。とりわけ、座部１９の接地面
積率は防音性能に影響を与えている。尚、この緩衝シー
ト６の厚みは０．２〜２．５ｍｍ程度である。In the present invention, the contact area ratio of the buffer sheet 6 to the lower ground 18 and the contact area ratio to the base material plywood 4 are as follows:
The area occupied by the seat portion 19 or the bonding portion 10 provided at the top of the raised portion is divided by the surface area of the base material plywood 4. Normally, the contact area ratio of the seat portion 19 is at most 10%, while the contact area ratio of the bonding portion 10 is at most 20%. Above this level, the impact noise tends to propagate from the base material plywood 4 to the ground surface 11 and lacks soundproofing. In particular, the contact area ratio of the seat 19 affects the soundproof performance. The thickness of the buffer sheet 6 is about 0.2 to 2.5 mm.
【００１１】ここで使用される合板層２は厚さ６〜１０
ｍｍで、化粧合板３とスリット５を有する基材合板４と
の積層体、もしくはスリット５を有する基材合板４で構
成されている。これらの材質は、ブナ、シラ、ラワン等
を素材とするものである。また、基材合板４に設けたス
リット５は衝撃音を放出、拡散させる上で連通している
のが好ましく、その面積の占有率は１０〜６０％であ
る。The plywood layer 2 used here has a thickness of 6-10.
It is composed of a laminate of decorative plywood 3 and base plywood 4 having slits 5 or base plywood 4 having slits 5. These materials are made of beech, shira, lauan and the like. Further, it is preferable that the slits 5 provided in the base material plywood 4 communicate with each other in order to emit and diffuse an impact sound, and the occupancy of the area is 10 to 60%.
【００１２】また、防音床材１は化粧合板３とスリット
５を有する基材合板４との間に制振シート２０が介在さ
れ、前記基材合板４のスリットを有する面に前記緩衝シ
ート６とを順次積層した構成よりなっている。前記制振
シート２０はゴム系発泡体、オレフィン系発泡体、ウレ
タン系発泡体である。The soundproof flooring 1 has a vibration damping sheet 20 interposed between a decorative plywood 3 and a base plywood 4 having a slit 5, and the cushioning sheet 6 is provided on a surface of the base plywood 4 having a slit. Are sequentially laminated. The vibration damping sheet 20 is a rubber-based foam, an olefin-based foam, or a urethane-based foam.
【００１３】一方、図５に示す防音床材１は基材合板４
と緩衝シート６間に発泡体層２１を介在させ、よりクッ
ション性を付与したものである。ここで使用する発泡体
層２１はポリエチレン、ポリプロピレン、エチレン−ビ
ニルアセテート共重合体（ＥＶＡ）、エチレン−エチル
アクリレート共重合体（ＥＥＡ）、エチレン−メチルメ
タクリレート共重合体（ＥＭＭＡ）等のポリオレフィン
系共重合体、ポリウレタン、ゴムの独立気泡を有する発
泡体、もしくは汎用の無機充填材を添加したもので、特
に好ましくは前記重合体１００重量部に無機充填材とし
て水酸化アルミニウム、水酸化マグネシウム又はマイカ
を５〜２００重量部を添加した組成を有し、あるいは軟
質ポリウレタン１００重量部にマイカを３〜３０重量部
を添加した組成を有し、発泡倍率５〜３０程度の架橋型
の独立気泡をもつ発泡体である。この発泡体層の厚さは
２〜１０ｍｍである。この発泡体層２１の表面にはシボ
等のパターンを設けてもよい。勿論、発泡体層２１の代
わり、不織布等の繊維部材を用いることも出来る。On the other hand, the soundproof flooring 1 shown in FIG.
The cushion layer 6 is further provided with a foam layer 21 interposed between the cushioning sheet 6 and the cushioning sheet 6. The foam layer 21 used here is a polyolefin-based copolymer such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), and ethylene-methyl methacrylate copolymer (EMMA). Polymer, polyurethane, foam having closed cells of rubber, or a general-purpose inorganic filler added, particularly preferably 100 parts by weight of the polymer aluminum hydroxide, magnesium hydroxide or mica as the inorganic filler. A foam having a composition in which 5 to 200 parts by weight is added, or a composition in which mica is added in an amount of 3 to 30 parts by weight to 100 parts by weight of soft polyurethane, and having a cross-linking closed cell having an expansion ratio of about 5 to 30 Body. The thickness of this foam layer is 2 to 10 mm. A pattern such as a grain may be provided on the surface of the foam layer 21. Needless to say, a fiber member such as a nonwoven fabric can be used instead of the foam layer 21.
【００１４】[0014]
【作用】上記本発明では、緩衝シート６の内面側７が局
部的に基材合板４に接合し、他方外面側１５では中空状
の***部１７の頂部に設けた座部１９が下地面１８に接
し、更に内外面側７、１５に空気を連通する空気通路１
３を形成しているため、基材合板４から伝播する衝撃音
を下地面１８へ直接伝わりにくくし、また衝撃音を一部
吸収して減衰させるととに、クッション性と耐圧縮性と
を向上させる。しかも、本発明では***部１７の頂部に
設けた座部１９が突出し、下地面１８に接する面積が小
さく制限されるために、より一層基材合板４から伝播す
る衝撃音が下地面１８へ直接伝わりにくくしている。According to the present invention, the inner surface 7 of the cushioning sheet 6 is locally joined to the base material plywood 4, while the outer surface 15 is provided with a seat 19 provided on the top of a hollow ridge 17 on the base surface 18. And an air passage 1 that communicates air with the inner and outer surfaces 7 and 15.
3, the impact sound propagating from the base material plywood 4 is hardly transmitted directly to the base surface 18, and the impact sound is partially absorbed and attenuated. Improve. In addition, in the present invention, the seat 19 provided on the top of the raised portion 17 protrudes, and the area in contact with the ground surface 18 is limited to a small amount. It is hard to convey.
【００１５】[0015]
【実施例】次に本発明の防音床材の具体的な実施例につ
いて詳述する。 実施例１ 厚さ２．５ｍｍの化粧合板、厚さ１．５ｍｍの制振シー
ト（天然／ＳＢＲゴム発泡体）、厚さ５．５ｍｍの基材
合板（占有率２８％のスリットを有する６プライのブナ
単体）、そして厚さ１ｍｍの緩衝ゴムシートを順次積層
して図１に示す防音床材を得た。尚、緩衝シートは表１
に示すゴム配合を用いて厚さ１ｍｍのシートを作製した
後、これを半球面状の***部を設けた下型に設置した
後、ほぼ同形状の上型をかぶせ、かかる金型１５３℃、
１０分間放置して加硫した。得られた緩衝シートは、図
３、４に示すパターンと同じであり、***部頂部に設け
た座部の突出量は約１ｍｍであり、該座部の接地面積率
を５と７％に設置した。EXAMPLES Next, specific examples of the soundproof flooring material of the present invention will be described in detail. Example 1 Decorative plywood having a thickness of 2.5 mm, a vibration damping sheet having a thickness of 1.5 mm (natural / SBR rubber foam), and a plywood having a thickness of 5.5 mm (six plies having a slit having an occupancy of 28%) And a rubber cushion sheet having a thickness of 1 mm were sequentially laminated to obtain a soundproof flooring material shown in FIG. The cushioning sheet is shown in Table 1.
After preparing a sheet having a thickness of 1 mm using the rubber compound shown in the above, this was placed in a lower mold having a hemispherical ridge, and then covered with an upper mold having substantially the same shape, and the mold was placed at 153 ° C.
It was left to cure for 10 minutes. The obtained buffer sheet has the same pattern as that shown in FIGS. 3 and 4. The amount of protrusion of the seat provided on the top of the raised portion is about 1 mm, and the contact area ratio of the seat is set to 5 and 7%. did.
【００１６】[0016]
【表１】 [Table 1]
【００１７】 上記防音床材の衝撃音レベルの測定は、
緩衝ゴムシートをスラブコンクリート床面に面するよう
に設置し、ＪＩＳＡ−１４１８に準じて行った。また、
耐荷重性は防音床材に４ｋｇ／ｃｍ2 の荷重を与えたと
きにの床材の撓み量を示す。これらの結果を表２示す。
また、図６に床衝撃音レベルとオクターブ帯域中心周波
数との関係を示す。[0017] The measurement of the impact sound level of the soundproof floor material is as follows.
The cushion rubber sheet was installed so as to face the slab concrete floor surface, and the measurement was performed according to JISA-1418. Also,
The load resistance indicates the amount of deflection of the flooring when a load of 4 kg / cm 2 is applied to the soundproofing flooring. Table 2 shows these results.
FIG. 6 shows the relationship between the floor impact sound level and the octave band center frequency.
【００１８】実施例２ 実施例１と同様の化粧合板、制振シート、基材合板、そ
して厚さ２ｍｍ、目付け量２００ｇのポリエステル長繊
維からなる不織布、更に実施例１と同じ接地面積率７％
の緩衝シートを用い、これらを順次積層した防音床材を
得た。得られた防音床材の床衝撃音レベルと耐荷重性と
の測定結果を表２に、また図６に床衝撃音レベルとオク
ターブ帯域中心周波数との関係を示す。Example 2 The same decorative plywood, vibration-damping sheet and substrate plywood as in Example 1 and a nonwoven fabric made of polyester filaments having a thickness of 2 mm and a basis weight of 200 g, and a ground contact area ratio of 7% as in Example 1
Were used to obtain a soundproof flooring material in which these were sequentially laminated. Table 2 shows the measurement results of the floor impact sound level and the load resistance of the obtained soundproof floor material, and FIG. 6 shows the relationship between the floor impact sound level and the octave band center frequency.
【００１９】実施例３ 実施例１と同様の化粧合板、制振シート、基材合板、そ
して厚さ２ｍｍで発泡倍率３０倍のポリオレフィン発泡
体を順次積層し、更に実施例１と同じ接地面積率５％の
緩衝シートを貼着して防音床材を得た。得られた防音床
材の床衝撃音レベルとの測定結果を表２に、また図６に
床衝撃音レベルとオクターブ帯域中心周波数との関係を
示す。Example 3 The same decorative plywood, vibration-damping sheet, base material plywood and polyolefin foam having a thickness of 2 mm and an expansion ratio of 30 were laminated in this order, and the same contact area ratio as in Example 1 was obtained. A 5% buffer sheet was attached to obtain a soundproof flooring material. Table 2 shows the measurement results of the floor impact sound level of the obtained soundproofing floor material, and FIG. 6 shows the relationship between the floor impact sound level and the octave band center frequency.
【００２０】実施例４ 実施例１の防音床材から厚さ１．５ｍｍの制振シート
（天然／ＳＢＲゴム発泡体）を除いた構成に防音床材を
得た。得られた防音床材の床衝撃音レベルとの測定結果
を表２に示す。Example 4 A soundproof flooring material was obtained in the same manner as in Example 1 except that the vibration-damping sheet (natural / SBR rubber foam) having a thickness of 1.5 mm was omitted. Table 2 shows the measurement results of the obtained soundproofing floor material and the floor impact sound level.
【００２１】比較例１ 実施例１と同様の化粧合板、制振シート、基材合板、そ
して厚さ１ｍｍで座部を持たない断面台形状の***部を
有する緩衝シート（接地面積率６０％）を積層して防音
床材を得た。この床材の床衝撃音レベルを測定したその
結果を表２に、また図６に床衝撃音レベルとオクターブ
帯域中心周波数との関係を示す。Comparative Example 1 The same decorative plywood, vibration-damping sheet, substrate plywood as in Example 1 and a buffer sheet having a thickness of 1 mm and having a raised portion with a trapezoidal cross section without a seat (ground area ratio 60%) Were laminated to obtain a soundproof floor material. The results of measuring the floor impact sound level of this floor material are shown in Table 2, and FIG. 6 shows the relationship between the floor impact sound level and the octave band center frequency.
【００２２】比較例２ 実施例１と同様の化粧合板、制振シート、基材合板、そ
して厚さ２ｍｍ、目付け量２００のポリエステル長繊維
からなる不織布を使用し、これらを順次積層したものを
防音床材とし、この床材の床衝撃音レベルを測定した。
その結果を表２に、また図６に床衝撃音レベルとオクタ
ーブ帯域中心周波数との関係を示す。Comparative Example 2 The same decorative plywood, vibration-damping sheet and base material plywood as in Example 1 and a nonwoven fabric made of polyester long fiber having a thickness of 2 mm and a basis weight of 200 were used, and those obtained by sequentially laminating these were soundproofed. The floor material was used as a floor material, and the floor impact sound level of the floor material was measured.
The results are shown in Table 2 and FIG. 6 shows the relationship between the floor impact sound level and the octave band center frequency.
【００２３】比較例３ 実施例１と同様の化粧合板、制振シート、基材合板、そ
して厚さ４ｍｍ、発泡倍率３０倍のポリオレフィン系発
泡体を使用し、これらを順次積層したものを防音床材と
し、この床材の床衝撃音レベルを測定した。その結果を
表２に示す。Comparative Example 3 The same decorative plywood, vibration-damping sheet, substrate plywood and polyolefin foam having a thickness of 4 mm and an expansion ratio of 30 as in Example 1 were used, and these were sequentially laminated to form a soundproof floor. The floor impact sound level of this floor material was measured. Table 2 shows the results.
【００２４】[0024]
【表２】 [Table 2]
【００２５】このように本実施例では座部を有する緩衝
シートの下地面への接地面積率を５〜７％にすることに
より、Ｌ値が４３〜４９になり、優れた防音性を有し、
特に低周波数の床衝撃音レベルが減少していることが判
る。しかし、座部のない接地面積率の大きい緩衝シート
を使用すると低周波数から高周波数にわたって床衝撃音
レベルが高くて、Ｌ値が上昇し、しかも耐荷重性にも優
れている。As described above, in the present embodiment, the L value becomes 43 to 49 by setting the contact area ratio of the cushioning sheet having the seat portion to the lower ground to 5 to 7%, and the sound absorbing property is excellent. ,
In particular, it can be seen that the low-frequency floor impact sound level has been reduced. However, when a cushioning sheet having a large contact area ratio without a seat portion is used, the floor impact sound level is high from low frequencies to high frequencies, the L value is increased, and the load resistance is excellent.
【００２６】[0026]
【発明の効果】以上のように、本発明では、緩衝シート
が内面側及び外面側で局部的に基材合板と下地面に接
し、しかも内面側及び外面側に内存する空気が連通する
ため、まず基材合板からの衝撃音は容易に下地面へ伝播
しにくくなり、しかもその衝撃音を一部吸収して減衰さ
せるために防音性が向上する効果があり、更にはクッシ
ョン性と耐荷重性にも優れる。特に、***部の頂部に設
けた突出した座部のみが下地面に接触し、しかも荷重が
かかってもこの状態が維持されるため、基材合板からの
衝撃音が下地面へ直接伝播しにくくなって防音性が一段
と向上する。As described above, according to the present invention, the cushioning sheet locally contacts the base material plywood and the base surface on the inner surface side and the outer surface side, and the air existing on the inner surface side and the outer surface side communicates. First, the impact sound from the base material plywood is not easily transmitted to the ground surface, and the impact sound is improved by absorbing and attenuating part of the impact sound. Also excellent. In particular, only the protruding seat portion provided on the top of the raised portion comes into contact with the ground surface, and this state is maintained even when a load is applied, so that the impact sound from the base material plywood is difficult to directly propagate to the ground surface. As a result, the soundproofing is further improved.
【図１】本発明に係る防音床材の部分斜視図である。FIG. 1 is a partial perspective view of a soundproof flooring material according to the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】本発明の防音床材に使用する緩衝シートを内面
側から見た平面図である。FIG. 3 is a plan view of the cushioning sheet used for the soundproof flooring material of the present invention as viewed from the inside.
【図４】本発明の防音床材に使用する緩衝シートを外面
側から見た平面図である。FIG. 4 is a plan view of the cushioning sheet used for the soundproof flooring material of the present invention as viewed from the outer surface side.
【図５】本発明の他の実施例である防音床材であって図
２に相当する断面図である。FIG. 5 is a sectional view of a soundproof flooring according to another embodiment of the present invention, corresponding to FIG. 2;
【図６】防音床材の床衝撃音レベルとオクターブ帯域中
心周波数との関係を示すグラフである。FIG. 6 is a graph showing the relationship between the floor impact sound level of the soundproof floor material and the octave band center frequency.
１ 防音床材 ２ 合板層 ３ 化粧合板 ４ 基材合板 ５ スリット ６ 緩衝シート ７ 内面側 ８ 基準面 ９ 凹部 １０ 接着部 １３ 空気通路 １５ 外面側 １７ ***部 １８ 下地面 １９ 座部 REFERENCE SIGNS LIST 1 soundproof flooring material 2 plywood layer 3 decorative plywood 4 base material plywood 5 slit 6 buffer sheet 7 inner surface 8 reference surface 9 concave portion 10 bonding portion 13 air passage 15 outer surface side 17 raised portion 18 lower ground 19 seat portion
Claims (4)
緩衝シートの一方の面がシート面である基準面から窪ん
だ形状の凹部と該基準面から突出した接着部とを有し、
他方の面が***部の頂部に突出した座部を具備している
とともに、該***部が凹部と同じ位置にあり、しかも両
表面には内在する空気を連通させる空気通路がそれぞれ
形成されていることを特徴とする緩衝シート。1. A buffer sheet used for soundproof flooring,
One side of the cushioning sheet and a bonding portion that protrudes from the recess and the reference surface of the recessed from the reference surface is a sheet surface,
The other surface is provided with a protruding seat at the top of the protuberance, and the protuberance is located at the same position as the recess, and both surfaces are formed with air passages for communicating internal air. A buffer sheet characterized by the above-mentioned.
片面にスリットを設け、このスリットを有する面に緩衝
シートを貼着した防音床材において、上記緩衝シートの
内面側がシート面である基準面から窪んだ形状の凹部と
該基準面から突出して合板層に接する接着部とを有し、
一方外面側が下地面に接する突出した座部を***部の頂
部に具備しているとともに、該***部が内面側の凹部と
同じ位置にあり、しかも内面側及び外面側には内在する
空気を連通させる空気通路がそれぞれ形成されているこ
とを特徴とする防音床材。2. A soundproof flooring material in which a slit is provided on one surface of a plywood layer composed of a decorative plywood and a base material plywood, and a buffer sheet is attached to a surface having the slit, wherein the inner side of the buffer sheet is a sheet surface. With a concave part that is depressed from the reference plane
And a bonding portion which is in contact with the plywood layer protrudes from the reference surface,
On the other hand, the outer surface side is provided with a protruding seat portion in contact with the ground surface at the top of the raised portion, and the raised portion is located at the same position as the concave portion on the inner surface side, and the internal air is communicated with the inner surface side and the outer surface side. A soundproof flooring, characterized in that air passages to be formed are respectively formed.
が介在している請求項２記載の防音床材。3. The soundproof flooring material according to claim 2, wherein a vibration damping sheet is interposed between the decorative plywood and the base material plywood.
るいは不織布が介在している請求項２記載の防音床材。4. The soundproof flooring material according to claim 2, wherein a foam layer or a nonwoven fabric is interposed between the base material plywood and the buffer sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4088009A JP2623398B2 (en) | 1992-03-11 | 1992-03-11 | Buffer sheet and soundproof floor material using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4088009A JP2623398B2 (en) | 1992-03-11 | 1992-03-11 | Buffer sheet and soundproof floor material using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0633580A JPH0633580A (en) | 1994-02-08 |
| JP2623398B2 true JP2623398B2 (en) | 1997-06-25 |
Family
ID=13930828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4088009A Expired - Fee Related JP2623398B2 (en) | 1992-03-11 | 1992-03-11 | Buffer sheet and soundproof floor material using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2623398B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008007961A (en) * | 2006-06-27 | 2008-01-17 | Bridgestone Corp | Shock absorbing material and floor finishing material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2573198B2 (en) * | 1987-01-13 | 1997-01-22 | 松下電工株式会社 | Floor material |
| JPH0254058A (en) * | 1988-08-15 | 1990-02-23 | Koyo Sangyo Kk | Wooden sound-proof floor material and floor base part |
-
1992
- 1992-03-11 JP JP4088009A patent/JP2623398B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633580A (en) | 1994-02-08 |
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