JPH10319970A - Sound absorbing and insulating plate - Google Patents
Sound absorbing and insulating plateInfo
- Publication number
- JPH10319970A JPH10319970A JP9133291A JP13329197A JPH10319970A JP H10319970 A JPH10319970 A JP H10319970A JP 9133291 A JP9133291 A JP 9133291A JP 13329197 A JP13329197 A JP 13329197A JP H10319970 A JPH10319970 A JP H10319970A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- weight
- parts
- sound absorbing
- binder
- 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.)
- Pending
Links
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
(57)【要約】
【課題】 生産性の高い吸遮音性に優れた吸遮音性板材
を提供することにある。
【解決手段】 鉱物質繊維、無機粉体、および、結合剤
を主成分とする表裏層１，２間に、開放型無機発泡体お
よび結合剤を主成分とする中層３を形成する。そして、
前記表裏層１，２のいずれにも密度２ｇ／ｃｍ3以上の
無機粉体を添加し、面密度を２ｋｇ／ｍ2以上とした。
ついで、中層３に連通するピン孔４および凹部５を表層
１に設けた。
(57) [Problem] To provide a sound absorbing and insulating plate material having high productivity and excellent sound absorbing and insulating properties. SOLUTION: An intermediate layer 3 mainly composed of an open type inorganic foam and a binder is formed between front and back layers 1 and 2 mainly composed of a mineral fiber, an inorganic powder and a binder. And
An inorganic powder having a density of 2 g / cm 3 or more was added to each of the front and back layers 1 and 2 to make the areal density 2 kg / m 2 or more.
Then, a pin hole 4 and a concave portion 5 communicating with the middle layer 3 were provided in the surface layer 1.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、住宅等に使用される吸
遮音性に優れた板材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material having excellent sound absorbing and insulating properties used for houses and the like.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】一般に、
吸音性に優れた材料としては、繊維質あるいは多孔質材
料を用いることが望ましい。一方、遮音性に優れた材料
としては、質量則に基づき、重い材料が必要となる。こ
のため、吸音性と遮音性とを均一な材料で同時に満足さ
せることは容易でなく、従来より、繊維板の裏面に遮音
シートを貼着一体化したものが使用されていた。しかし
ながら、従来例にかかる吸遮音性板材では、繊維板の裏
面に遮音シートを後付けする必要があり、生産性が低
く、コストアップの原因となっていた。また、経時劣化
でシートが剥離しやすく、所望の遮音性能を長期間維持
できないという問題点がある。2. Description of the Related Art In general,
It is desirable to use a fibrous or porous material as a material having excellent sound absorbing properties. On the other hand, as a material having excellent sound insulation properties, a heavy material is required based on the mass rule. For this reason, it is not easy to simultaneously satisfy the sound absorbing property and the sound insulating property with a uniform material. Conventionally, a material in which a sound insulating sheet is adhered and integrated on the back surface of a fiberboard has been used. However, in the sound absorbing and insulating plate material according to the conventional example, it is necessary to attach a sound insulating sheet to the back surface of the fiberboard, which is low in productivity and causes an increase in cost. In addition, there is a problem that the sheet is easily peeled off due to deterioration over time, and the desired sound insulation performance cannot be maintained for a long period of time.
【０００３】本発明は、前記問題点に鑑み、生産性が高
く吸遮音性に優れた吸遮音性板材を提供することを目的
とする。[0003] In view of the above problems, an object of the present invention is to provide a sound absorbing and insulating plate having high productivity and excellent sound absorbing and insulating properties.
【０００４】[0004]
【課題を解決するための手段】本発明にかかる吸音遮音
性板材は、前記目的を達成するため、鉱物質繊維、無機
粉体、および、結合剤を主成分とする表裏層間に、開放
型無機発泡体および結合剤を主成分とする中層を形成す
るとともに、前記表裏層の少なくともいずれかの層に密
度２ｇ／ｃｍ3以上の無機粉体を添加し、面密度を２ｋ
ｇ／ｍ2以上とした構成としてある。また、吸音すべき
空間に面する表面に、前記中層に連通する細孔および／
または凹部を設けておいてもよい。According to the present invention, there is provided a sound-absorbing and sound-insulating plate material according to the present invention, wherein an open inorganic material is provided between the front and back layers mainly composed of mineral fiber, inorganic powder, and a binder. An intermediate layer having a foam and a binder as main components is formed, and an inorganic powder having a density of 2 g / cm 3 or more is added to at least one of the front and back layers to reduce the area density to 2 k.
g / m 2 or more. In addition, pores and / or communicating with the middle layer are provided on the surface facing the space to be sound-absorbed.
Alternatively, a concave portion may be provided.
【０００５】表裏層を形成する鉱物質繊維としては、例
えば、ロックウール、スラグウール、ミネラルウール、
または、グラスウール等を挙げることができ、これらは
単独で、あるいは、２種以上組み合わせて使用できる。
そして、表裏層における鉱物質繊維の添加量は、２０〜
６０重量部とするのが好ましい。２０重量部未満である
と、所望の曲げ強度が得られないからであり、６０重量
部を越えると、相対的に無機粉体の割合が減少するた
め、所望の表面硬度を確保できないからである。The mineral fibers forming the front and back layers include, for example, rock wool, slag wool, mineral wool,
Alternatively, glass wool and the like can be mentioned, and these can be used alone or in combination of two or more.
And the addition amount of the mineral fiber in the front and back layers is 20 to
Preferably it is 60 parts by weight. If the amount is less than 20 parts by weight, the desired bending strength cannot be obtained. If the amount exceeds 60 parts by weight, the ratio of the inorganic powder decreases relatively, so that the desired surface hardness cannot be secured. .
【０００６】表裏層に添加される密度２ｇ／ｃｍ3以上
の無機粉体としては、硫酸バリウム、酸化鉄、炭酸バリ
ウム、炭酸カルシウム、炭酸マグネシウム、水酸化マグ
ネシウム、水酸化バリウム、珪砂等が上げられ、これら
は単独、あるいは、２種以上組み合わせて使用できる。
そして、前記無機粉体の添加量は、２０〜６０重量部と
するのが好ましい。２０重量部未満であると、所望の遮
音性能が得られないからであり、６０重量部を越える
と、強度を付与する鉱物繊維の割合が少なくなり、所望
の曲げ強度が得られないからである。The inorganic powder having a density of 2 g / cm 3 or more to be added to the front and back layers includes barium sulfate, iron oxide, barium carbonate, calcium carbonate, magnesium carbonate, magnesium hydroxide, barium hydroxide, silica sand and the like. These can be used alone or in combination of two or more.
The amount of the inorganic powder to be added is preferably 20 to 60 parts by weight. If the amount is less than 20 parts by weight, the desired sound insulation performance cannot be obtained. If the amount exceeds 60 parts by weight, the proportion of the mineral fibers for imparting strength decreases, and the desired bending strength cannot be obtained. .
【０００７】表裏層を形成する結合剤は、前記鉱物質繊
維と前記無機粉体とを結合一体化するためのものであ
り、例えば、ポリビニールアルコール樹脂、フェノール
樹脂、エポキシ樹脂等の合成樹脂あるいはデンプン等が
挙げられ、これらは単独で、あるいは、２種以上組み合
わせて使用できる。そして、結合剤の添加量は、５〜２
０重量部であることが好ましい。５重量部未満である
と、十分な強度が得られないからであり、２０重量部を
越えると、防火性が損なわれるからである。[0007] The binder forming the front and back layers is for binding and integrating the mineral fiber and the inorganic powder, and is, for example, a synthetic resin such as polyvinyl alcohol resin, phenol resin, epoxy resin or the like. Starch and the like, which can be used alone or in combination of two or more. The amount of the binder added is 5 to 2
It is preferably 0 parts by weight. If the amount is less than 5 parts by weight, sufficient strength cannot be obtained, and if it exceeds 20 parts by weight, fire resistance is impaired.
【０００８】また、一般に、結合剤が多ければ多い程、
曲げ強度は向上するが、準不燃材としての吸遮音性板材
を得るためには、表裏層における有機成分の総量を結合
剤を含めて１５重量部以下にする必要がある。また、不
燃材としての吸遮音性板材を得るためには、有機成分の
総量を結合剤を含めて７重量部以下にする必要がある。In general, the more the binder, the more
Although the flexural strength is improved, the total amount of organic components in the front and back layers, including the binder, must be 15 parts by weight or less in order to obtain a sound absorbing and insulating plate material as a semi-combustible material. Further, in order to obtain a sound absorbing and insulating plate material as a non-combustible material, the total amount of organic components needs to be 7 parts by weight or less including a binder.
【０００９】また、表裏層には、必要に応じ、無機粉体
を連結するために他の繊維状物を添加してもよい。他の
繊維状物としては、例えば、ポリプロピレン、ポリエス
テル等の合成樹脂繊維、パルプ、麻，亜麻等の天然繊維
を挙げることができ、これらは単独、あるいは、２種以
上組み合わせて使用できる。そして、表裏層における前
記繊維状物の添加量は、３〜１５重量部であることが好
ましい。３重量部未満であると、所望の曲げ強度が得ら
れないからであり、１５重量部を越えると、重量軽減効
果が得られないからである。なお、必要に応じ、結合剤
としての機能を兼ね備えた熱融着繊維を使用してもよ
い。[0009] If necessary, other fibrous substances may be added to the front and back layers to connect the inorganic powder. Examples of other fibrous materials include synthetic resin fibers such as polypropylene and polyester, and natural fibers such as pulp, hemp and flax. These can be used alone or in combination of two or more. The amount of the fibrous material added to the front and back layers is preferably 3 to 15 parts by weight. If the amount is less than 3 parts by weight, the desired bending strength cannot be obtained. If the amount exceeds 15 parts by weight, the effect of reducing the weight cannot be obtained. In addition, you may use the heat fusion fiber which also has the function as a binder as needed.
【００１０】また、前述の無機粉体の他、密度２ｇ／ｃ
ｍ3以下の無機粉体を添加してもよい。さらに、無機発
泡体等の軽量骨材を添加してもよい。Further, in addition to the above-mentioned inorganic powder, a density of 2 g / c
Inorganic powder of m 3 or less may be added. Further, a lightweight aggregate such as an inorganic foam may be added.
【００１１】中層を形成する開放型無機発泡体は圧縮強
度を維持しつつ、軽量化のために添加されるものであ
り、例えば、パーライト、シラス発泡体、シリカフラワ
ー、ガラス発泡体、バーミキュライト、黒曜石発泡体等
があり、これらは単独で、あるいは、２種以上組み合わ
せて使用できる。そして、前記無機発泡体の添加量は、
４０〜８０重量部とするのが好ましい。４０重量部未満
であると、所望の重量軽減効果が得られないからであ
り、８０重量部を超えると、無機粉体および結合剤の割
合が小さくなり、所望の圧縮強度が得られないからであ
る。The open inorganic foam forming the middle layer is added for weight reduction while maintaining the compressive strength. For example, perlite, shirasu foam, silica flower, glass foam, vermiculite, obsidian There are foams and the like, which can be used alone or in combination of two or more. And the addition amount of the inorganic foam,
Preferably it is 40 to 80 parts by weight. If the amount is less than 40 parts by weight, the desired weight reduction effect cannot be obtained. If the amount exceeds 80 parts by weight, the ratio of the inorganic powder and the binder becomes small, and the desired compressive strength cannot be obtained. is there.
【００１２】中層を形成する結合剤は、前記開放型無機
発泡体を結合一体化するために添加されるものであり、
前述の表裏層部の結合剤と同様であり、その添加量も表
裏層と同様である。The binder for forming the middle layer is added for binding and integrating the open inorganic foam.
The binder is the same as that of the above-mentioned front and back layer portions, and the amount of addition is also the same as that of the front and back layers.
【００１３】なお、一般に、結合剤が多ければ多い程、
曲げ強度は向上するが、準不燃材としての吸遮音性板材
を得るためには、中層における有機成分の総量を結合剤
を含めて１５重量部以下にする必要がある。また、不燃
材としての吸遮音性板材を得るためには、有機成分の総
量を結合剤を含めて７重量部以下にする必要がある。[0013] Generally, the more the binder, the more
Although the bending strength is improved, the total amount of the organic components in the middle layer, including the binder, needs to be 15 parts by weight or less in order to obtain a sound absorbing and insulating plate material as a semi-combustible material. Further, in order to obtain a sound absorbing and insulating plate material as a non-combustible material, the total amount of organic components needs to be 7 parts by weight or less including a binder.
【００１４】中層には、必要に応じ、防火性を維持しつ
つ、硬度を高めてネジ止め性能を高めるため、増量材と
して無機粉体を添加してもよく、その密度は２ｇ／ｃｍ
3未満であってもよい。このような無機粉体としては、
例えば、炭酸カルシウム、水酸化アルミニウム、硅砂、
マイクロシリカ、スラグ等を挙げることができる。そし
て、中層における前記無機粉体の添加量は、４０重量部
以下とするのが好ましい。４０重量部を越えると、無機
発泡体の添加量が減少して板材が重くなるからである。If necessary, an inorganic powder may be added to the middle layer as a filler in order to increase the hardness and enhance the screwing performance while maintaining fire resistance, and its density may be 2 g / cm.
It may be less than 3 . As such inorganic powder,
For example, calcium carbonate, aluminum hydroxide, silica sand,
Micro silica, slag and the like can be mentioned. The amount of the inorganic powder added to the middle layer is preferably set to 40 parts by weight or less. If the amount exceeds 40 parts by weight, the amount of the inorganic foam decreases and the plate material becomes heavy.
【００１５】また、中層には、必要に応じ、前記開放型
無機発泡体を連結する繊維状物を添加してもよい。繊維
状物としては、例えば、ポリプロピレン、ポリエステル
等の合成樹脂繊維、パルプ、麻，亜麻等の天然繊維を挙
げることができ、これらは単独、あるいは、２種以上組
み合わせて使用できる。そして、中層における前記繊維
状物の添加量は、３〜１５重量部であることが好まし
い。３重量部未満であると、所望の曲げ強度が得られな
いからであり、１５重量部を越えると、重量軽減効果が
得られないからである。なお、必要に応じて結合剤とし
ての機能を兼ね備えた熱融着繊維を使用してもよい。[0015] If necessary, a fibrous material for connecting the open-type inorganic foam may be added to the middle layer. Examples of the fibrous material include synthetic resin fibers such as polypropylene and polyester, and natural fibers such as pulp, hemp and flax. These can be used alone or in combination of two or more. The amount of the fibrous material in the middle layer is preferably 3 to 15 parts by weight. If the amount is less than 3 parts by weight, the desired bending strength cannot be obtained. If the amount exceeds 15 parts by weight, the effect of reducing the weight cannot be obtained. In addition, you may use the heat fusion fiber which also has the function as a binder as needed.
【００１６】次に、本発明にかかる吸遮音性板材の製造
方法の一例について説明する。鉱物質繊維、密度２ｇ／
ｃｍ3以上の無機粉体、結合剤、および、他の繊維状物
を清水中に適宜投入，撹拌して所定濃度のスラリーを
得、これを長網式抄造機に導いて裏層となる湿潤無機マ
ットを抄造する。一方、開放型無機発泡体、結合剤、無
機粉体、および、繊維状物を、清水を噴霧しながら混合
し、中層用混合物を得る。そして、この中層用混合物を
前記湿潤無機マットの上面に均一に散布，堆積して積層
する。ついで、前述の裏層と同様に処理して得た表層と
なる湿潤無機マットを、堆積させた前記中層用混合物に
重ねて３層積層物を得、これを所定の温度，圧力で熱圧
一体化する。Next, an example of a method for producing a sound absorbing and insulating plate according to the present invention will be described. Mineral fiber, density 2g /
cm 3 or more inorganic powder, binder, and, optionally introducing other fibrous material in fresh water, to obtain a slurry having a predetermined concentration by stirring, the backing layer lead it to a foraminous papermaking machine wet Paper making an inorganic mat. On the other hand, the open type inorganic foam, the binder, the inorganic powder, and the fibrous material are mixed while spraying fresh water to obtain a mixture for the middle layer. Then, the intermediate layer mixture is uniformly dispersed, deposited and laminated on the upper surface of the wet inorganic mat. Then, a wet inorganic mat to be a surface layer obtained by treating in the same manner as the above-mentioned back layer is superimposed on the deposited mixture for the middle layer to obtain a three-layer laminate, which is subjected to heat and pressure integration at a predetermined temperature and pressure. Become
【００１７】さらに、吸音すべき空間に面する表面に、
中層に連通する細孔および／または凹部を、ピン，ドリ
ルで形成する。Further, on the surface facing the space to be sound-absorbed,
Pores and / or recesses communicating with the middle layer are formed by pins and drills.
【００１８】[0018]
【実施例】以下、本発明にかかる実施例について説明す
る。 （実施例）鉱物質繊維としてスラグウール４５重量部、
密度２ｇ／ｃｍ3以上の無機粉体として硫酸バリウム４
０重量部、繊維状物としてパルプ５重量部、および、結
合剤としてフェノール樹脂６重量部、デンプン４重量部
を清水中に投入，撹拌して濃度２％のスラリーを得、こ
れを長網式抄造機で抄造し、裏層となる厚さ８ｍｍの湿
潤無機マットを得た。Embodiments of the present invention will be described below. (Example) 45 parts by weight of slag wool as a mineral fiber,
Barium sulfate 4 as an inorganic powder with a density of 2 g / cm 3 or more
0 parts by weight, 5 parts by weight of pulp as a fibrous material, 6 parts by weight of a phenol resin as a binder, and 4 parts by weight of starch are put into clear water and stirred to obtain a slurry having a concentration of 2%. The paper was machined with a paper machine to obtain a wet inorganic mat having a thickness of 8 mm to be a back layer.
【００１９】一方、無機発泡体としてシラス発泡体６５
重量部、無機粉体として炭酸カルシウム２０重量部、繊
維状物としてパルプ５重量部、および、結合剤としてデ
ンプン５重量部、フェノール樹脂５重量部を、清水４０
重量部の噴霧下で均一に混合して中層用混合物を得た。
そして、この中層用混合物を裏層を形成する前記湿潤無
機マット上に厚さ７０ｍｍとなるように散布，堆積して
積層する。On the other hand, Shirasu foam 65 is used as an inorganic foam.
Parts by weight, 20 parts by weight of calcium carbonate as an inorganic powder, 5 parts by weight of pulp as a fibrous material, 5 parts by weight of starch as a binder, and 5 parts by weight of phenol resin,
The mixture for the middle layer was obtained by uniformly mixing under spraying of parts by weight.
Then, the intermediate layer mixture is sprayed, deposited and laminated on the wet inorganic mat forming the back layer so as to have a thickness of 70 mm.
【００２０】さらに、裏層を形成する前記湿潤無機マッ
トと同様に処理して得られた表層を形成する湿潤無機マ
ットを、散布，堆積した前記中層用混合物に重ねて厚さ
８６ｍｍの３層積層物を得た。ついで、温度１８０℃の
熱圧プレスで厚さ１８ｍｍまで加熱，圧締した後、温度
１８０℃のドライヤーで乾燥して得られた吸遮音性板材
を得た。そして、最後に、前記吸遮音性板材に凹凸加工
を施して中層に達する凹部を形成するとともに、中層に
連通するピン孔を形成したものを実施例のサンプルとし
た（図１）。Further, a wet inorganic mat for forming a surface layer obtained by treating in the same manner as the wet inorganic mat for forming a back layer is superimposed on the sprayed and deposited mixture for the middle layer, and a three-layer laminate having a thickness of 86 mm is laminated. I got something. Subsequently, the sheet was heated and pressed to a thickness of 18 mm by a hot press at a temperature of 180 ° C., and dried by a dryer at a temperature of 180 ° C. to obtain a sound absorbing and insulating plate material. Finally, the sound absorbing and insulating plate material was subjected to unevenness processing to form a concave portion reaching the middle layer, and a pin hole communicating with the middle layer was formed as a sample of the example (FIG. 1).
【００２１】（比較例）表面に凹部を設けるとともに、
ピン孔を設けた厚さ１８ｍｍのロックウール吸音板の裏
面に、遮音シートを貼着一体化したものを比較例のサン
プルとした。(Comparative Example) In addition to providing a concave portion on the surface,
A sample of a comparative example was obtained by sticking and integrating a sound insulating sheet on the back surface of a 18 mm-thick rock wool sound absorbing plate provided with pin holes.
【００２２】得られた各サンプルについて吸遮音性能を
測定した。吸音性能は「ＪＩＳ Ａ１４０９ 残響室法
吸音率の測定方法」に基づくものである。また、遮音性
能は「ＪＩＳ Ａ １４１６ 実験室における音響透過
損失測定方法」に基づくものである。吸音性能および遮
音性能の測定結果を下記にそれぞれ示す。The sound absorbing and insulating performance of each of the obtained samples was measured. The sound absorbing performance is based on "JIS A1409 Reverberation room method for measuring sound absorption coefficient". The sound insulation performance is based on “JIS A 1416 Method for measuring sound transmission loss in laboratory”. The measurement results of the sound absorbing performance and the sound insulating performance are shown below.
【００２３】 （吸音性能） 周波数（Ｈｚ） １２５ ２５０ ５００ １Ｋ ２Ｋ ４Ｋ 実施例 ０.２３ ０.２８ ０.３８ ０.４５ ０.５３ ０.６１ 比較例 ０.２８ ０.２４ ０.３０ ０.２９ ０.２８ ０.２８(Sound absorption performance) Frequency (Hz) 125 250 500 1K 2K 4K Example 0.23 0.28 0.38 0.45 0.53 0.61 Comparative example 0.28 0.24 0.30 0.30 29 0.28 0.28
【００２４】 （遮音性能） 周波数（Ｈｚ） １２５ ２５０ ５００ １Ｋ ２Ｋ ４Ｋ 実施例 ２１ ２４ ２８ ３１ ３４ ３５ 比較例 ２３ ２５ ２８ ３１ ３５ ３６ （単位:ｄｂ）(Sound insulation performance) Frequency (Hz) 125 250 500 1K 2K 4K Example 21 24 28 31 34 35 Comparative example 23 25 28 31 35 36 (unit: db)
【００２５】吸音性能において前記実施例と比較例とを
比較すると、周波数２５０Ｈｚまでの低周波域における
両者の吸音性能はほぼ同等である。しかし、周波数が５
００Ｈｚを越える高周波域においては、実施例の方が優
れている。特に、周波数４ＫＨｚの高周波域では実施例
の方が、比較例の２倍以上の吸音性能を有することがわ
かった。さらに、２５０，５００，１Ｋ，２ＫＨｚの４
周波数における残響室法吸音率の値の算術平均値である
ＮＲＣは、実施例が０．４１であり、比較例が０．２８
であった。ＮＲＣの値も実施例の方が優れていることが
わかった。Comparing the above embodiment with the comparative example in terms of sound absorption performance, the sound absorption performances of the two in the low frequency range up to a frequency of 250 Hz are almost the same. However, if the frequency is 5
In the high frequency range exceeding 00 Hz, the embodiment is more excellent. In particular, it was found that in the high-frequency range of the frequency of 4 KHz, the example had twice or more the sound absorbing performance of the comparative example. Furthermore, 250,500,1K, 2KHz 4
The NRC, which is the arithmetic average of the values of the reverberation room sound absorption coefficient at the frequency, is 0.41 in the example and 0.28 in the comparative example.
Met. It was also found that the value of NRC was superior in the example.
【００２６】これは、開放型無機発泡体の開口部から音
が入射すると、その開口部周辺の空気が振動することに
より、音のエネルギーが熱エネルギーに変わって吸音さ
れるためであると考えられる。いわば、中層に含まれる
開放型無機発泡体が、ヘルムホルツ レゾネーターと同
様な作用効果を奏していると考えられる。This is considered to be because when sound enters from the opening of the open type inorganic foam, the air around the opening vibrates, so that sound energy is converted into heat energy and absorbed. . In other words, it is considered that the open inorganic foam contained in the middle layer has the same function and effect as the Helmholtz resonator.
【００２７】遮音性能においては実施例の面密度が６．
５であるのに対し、比較例の面密度が６．７であり、両
者は面密度においてほぼ同一である。そして、両者の遮
音性能の値を比較すると、ほぼ同等の遮音性能を有する
ことがわかった。In the sound insulation performance, the areal density of the embodiment is 6.
Compared with 5, the areal density of the comparative example is 6.7, and both are almost the same in areal density. When the values of the sound insulation performances of the two were compared, it was found that they had substantially the same sound insulation performance.
【００２８】したがって、実施例の方が総合的に優れた
吸遮音性能を有することが判明した。Therefore, it was found that the examples had overall better sound absorbing and insulating performance.
【００２９】[0029]
【発明の効果】以上の説明から明らかなように、本発明
にかかる請求項１の吸遮音性板材によれば、表裏層のう
ち、少なくともいずれかの層に密度２ｇ／ｃｍ3以上の
無機粉体を添加することにより、その層の面密度を２ｋ
ｇ／ｍ2としてある。このため、単に遮音シートを貼着
一体化した従来例よりも優れた吸音性を有し、かつ、従
来例とほぼ同等の遮音性を有する吸音遮音性板材が得ら
れる。また、遮音層である表裏層と、吸音層である中層
とが積層一体化されているので、従来例のように遮音シ
ートを後付けする必要がなく、コストダウンを図ること
ができるとともに、経時劣化によって遮音シートが剥離
し、遮音性能が低下することもない。As apparent from the above description, according to the sound absorbing and insulating plate material of claim 1 of the present invention, at least one of the front and back layers has an inorganic powder having a density of 2 g / cm 3 or more. By adding the body, the area density of the layer is reduced to 2k
g / m 2 . Therefore, a sound-absorbing and sound-insulating plate material having a sound absorbing property superior to that of the conventional example in which the sound insulating sheet is simply adhered and integrated and having substantially the same sound insulating properties as the conventional example can be obtained. Further, since the front and back layers, which are sound insulation layers, and the middle layer, which is a sound absorption layer, are laminated and integrated, there is no need to retrofit a sound insulation sheet as in the conventional example, so that costs can be reduced and deterioration over time can be achieved. As a result, the sound insulating sheet does not peel off, and the sound insulating performance does not deteriorate.
【００３０】請求項２によれば、少なくとも吸音すべき
空間に面する層の表面から中層に連通する細孔または／
および凹部を形成してある。このため、前記細孔および
／または凹部を介して露出する中層に達した音が、中層
内の開放型無機発泡体に吸収され、より一層吸遮音性が
高まるという効果がある。According to the second aspect, at least pores communicating with the middle layer from the surface of the layer facing the space to be sound-absorbed.
And a concave portion. Therefore, the sound that reaches the middle layer exposed through the pores and / or the concave portions is absorbed by the open-type inorganic foam in the middle layer, and the sound absorbing and insulating properties are further enhanced.
【図１】 本発明にかかる吸遮音性板材の実施例を示す
概略断面図である。FIG. 1 is a schematic sectional view showing an embodiment of a sound absorbing and insulating plate material according to the present invention.
１，２…表裏層、３…中層、４…ピン孔、５…凹部。 1, 2, front and back layers, 3 middle layers, 4 pin holes, 5 recesses.
Claims (2)
を主成分とする表裏層間に、開放型無機発泡体および結
合剤を主成分とする中層を形成するとともに、前記表裏
層の少なくともいずれかの層に密度２ｇ／ｃｍ3以上の
無機粉体を添加し、面密度を２ｋｇ／ｍ2以上としたこ
とを特徴とする吸遮音性板材。An intermediate layer mainly comprising an open-type inorganic foam and a binder is formed between the front and back layers mainly containing a mineral fiber, an inorganic powder, and a binder, and at least one of the front and back layers is formed. A sound-absorbing and insulating plate material characterized in that an inorganic powder having a density of 2 g / cm 3 or more is added to any one of the layers to have a surface density of 2 kg / m 2 or more.
層に連通する細孔および／または凹部を設けたことを特
徴とする請求項１に記載の吸遮音性板材。2. The sound-absorbing and insulating plate material according to claim 1, wherein pores and / or recesses communicating with the middle layer are provided on a surface facing a space to be sound-absorbed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9133291A JPH10319970A (en) | 1997-05-23 | 1997-05-23 | Sound absorbing and insulating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9133291A JPH10319970A (en) | 1997-05-23 | 1997-05-23 | Sound absorbing and insulating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10319970A true JPH10319970A (en) | 1998-12-04 |
Family
ID=15101228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9133291A Pending JPH10319970A (en) | 1997-05-23 | 1997-05-23 | Sound absorbing and insulating plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10319970A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003507753A (en) * | 1999-08-11 | 2003-02-25 | エイチピー−ケミー ペルザー リサーチ アンド ディベロップメント リミテッド | Components with high absorption effect over a wide frequency range |
| JP2006243678A (en) * | 2005-03-07 | 2006-09-14 | Prime Polymer:Kk | Sound absorber, sound absorbing structure, and method of manufacturing sound absorber |
| JP2007005564A (en) * | 2005-06-23 | 2007-01-11 | Swcc Showa Device Technology Co Ltd | Sound absorption arrangement |
| JP2007005667A (en) * | 2005-06-27 | 2007-01-11 | Swcc Showa Device Technology Co Ltd | Sound absorption panel and its installation method |
| JP2007233250A (en) * | 2006-03-03 | 2007-09-13 | Daikyo Nishikawa Kk | Sound absorber |
| JP2010248888A (en) * | 2009-03-26 | 2010-11-04 | Railway Technical Res Inst | Soundproof material, manufacturing method thereof, and soundproof structure of rail |
| JP2012123293A (en) * | 2010-12-10 | 2012-06-28 | Toshiba Corp | Stationary inductance electrical appliance and low frequency sound absorbing wall |
| WO2012111720A1 (en) * | 2011-02-15 | 2012-08-23 | 株式会社神戸製鋼所 | Sound absorption panel |
-
1997
- 1997-05-23 JP JP9133291A patent/JPH10319970A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003507753A (en) * | 1999-08-11 | 2003-02-25 | エイチピー−ケミー ペルザー リサーチ アンド ディベロップメント リミテッド | Components with high absorption effect over a wide frequency range |
| JP2006243678A (en) * | 2005-03-07 | 2006-09-14 | Prime Polymer:Kk | Sound absorber, sound absorbing structure, and method of manufacturing sound absorber |
| JP2007005564A (en) * | 2005-06-23 | 2007-01-11 | Swcc Showa Device Technology Co Ltd | Sound absorption arrangement |
| JP2007005667A (en) * | 2005-06-27 | 2007-01-11 | Swcc Showa Device Technology Co Ltd | Sound absorption panel and its installation method |
| JP2007233250A (en) * | 2006-03-03 | 2007-09-13 | Daikyo Nishikawa Kk | Sound absorber |
| JP2010248888A (en) * | 2009-03-26 | 2010-11-04 | Railway Technical Res Inst | Soundproof material, manufacturing method thereof, and soundproof structure of rail |
| JP2012123293A (en) * | 2010-12-10 | 2012-06-28 | Toshiba Corp | Stationary inductance electrical appliance and low frequency sound absorbing wall |
| WO2012111720A1 (en) * | 2011-02-15 | 2012-08-23 | 株式会社神戸製鋼所 | Sound absorption panel |
| JP2012168415A (en) * | 2011-02-15 | 2012-09-06 | Kobe Steel Ltd | Sound absorption panel |
| US8887864B2 (en) | 2011-02-15 | 2014-11-18 | Kobe Steel, Ltd. | Sound absorption panel |
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