JPS6228435A - Sound absorbing material - Google Patents
Sound absorbing materialInfo
- Publication number
- JPS6228435A JPS6228435A JP60162553A JP16255385A JPS6228435A JP S6228435 A JPS6228435 A JP S6228435A JP 60162553 A JP60162553 A JP 60162553A JP 16255385 A JP16255385 A JP 16255385A JP S6228435 A JPS6228435 A JP S6228435A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing material
- sound
- sound absorbing
- absorption coefficient
- woven fabric
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は、吸音材に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a sound absorbing material.
従来、吸音材は、多孔質材料である織布からなものが使
用されている。しかし、このような吸音材は、部分的な
周波数範囲の音波の吸収は可能であるが、広帯域に亘る
周波数の音波を吸収できない問題があった。すなわち、
任意の目的で使用される建築物用の吸音材は、広帯域に
亘る周波数の音波を吸収する必要があり、特定の目的で
使用される建築物用の吸音材は、特定周波数の音波を吸
収する必要があるが、前者の要請に応える吸音材として
適切なものがなく、況やこれらの要Ｍを完全に満足する
吸音材は存存しなかった。Conventionally, sound absorbing materials have been made of woven fabric, which is a porous material. However, although such sound absorbing materials can absorb sound waves in a partial frequency range, they have a problem in that they cannot absorb sound waves in a wide range of frequencies. That is,
Sound-absorbing materials for buildings used for any purpose must absorb sound waves at a wide range of frequencies, and sound-absorbing materials for buildings used for a specific purpose must absorb sound waves at specific frequencies. However, there is no suitable sound absorbing material that meets the former requirement, and no sound absorbing material that completely satisfies these requirements M exists.
本発ＢＡは、高い吸音率で広範囲の周波数帯域の音波を
容易に吸収することができる吸音材を提供することをそ
の目的とするものである。The purpose of the present BA is to provide a sound absorbing material that has a high sound absorption coefficient and can easily absorb sound waves in a wide range of frequency bands.
本発明は、表面に有機重合体を塗布して相互の配列間隔
を任意に配列してなる繊維体で構成された織布からなシ
、高い吸音率で広範囲の周波数帯の音波を容易に吸収す
ることができる吸音材である。The present invention is made of a woven fabric made of fibers coated with an organic polymer on the surface and arbitrarily arranged at mutual spacing, and easily absorbs sound waves in a wide range of frequency bands with a high sound absorption coefficient. It is a sound absorbing material that can
以下、本発明の実施例について図面を参照して説明する
。第１図（Ａ）は、本発明の一実施例の平面図、同図（
Ｂ）は、同実施例の側面図であり、第３図は第１図（Ａ
）の拡大平面図、第４図は第３図の側面図である。この
吸音材は、ガラスＲ維等の無機質繊維からなる繊維体１
の表面に有機重合体３を塗布し、これを縦、横の配列間
隔が任意の配列とし、かつ、各々の繊維体１に多数本の
ひげ２を植毛した織布で構成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1(A) is a plan view of one embodiment of the present invention;
B) is a side view of the same embodiment, and FIG. 3 is a side view of the same embodiment.
), and FIG. 4 is a side view of FIG. 3. This sound absorbing material has a fiber body 1 made of inorganic fiber such as glass R fiber.
The fiber body 1 is made of a woven fabric coated with an organic polymer 3 on the surface thereof, arranged at arbitrary intervals vertically and horizontally, and having a large number of hairs 2 flocked to each fiber body 1.
ここで、繊維体１は、無機質繊維の他にも有機質繊維で
形成されたものであっても良い。繊維体１の直径は、吸
音材１０の用途に応じて適宜設定され、例えば約０．５
ｍφに設定されている。繊維体１の縦、横の配列間隔
は不均一であり、例えば縦側か３２本／２５能、１３本
／２５簡、３２本／ ２５ ｒｍに配置され、横側か２
１本／２５ｍｍ、１３本／２５ｍ、２１本／２５■に配
置されている。この場合繊布に形成される網目の通気量
は、８０〜１５０ ＣＦＭ／ｌｔ”になっている。織布
の厚さは０．２〜３＋＋ｍの範囲内で設定するのが望ま
しい。この厚さが０．２ｍに満ない場合は十分な吸音効
果が得られず、３問を越えると可撓性が悪くなり加工及
び施工が困難になる。Here, the fibrous body 1 may be formed of organic fibers in addition to inorganic fibers. The diameter of the fibrous body 1 is appropriately set depending on the use of the sound absorbing material 10, and is, for example, about 0.5
It is set to mφ. The vertical and horizontal arrangement intervals of the fiber bodies 1 are non-uniform, for example, they are arranged at 32/25 rms, 13/25 rms, 32/25 rms on the vertical side, and 2/25 rms on the horizontal side.
They are arranged at 1/25mm, 13/25m, and 21/25mm. In this case, the air permeability of the mesh formed in the woven fabric is 80 to 150 CFM/lt''.The thickness of the woven fabric is preferably set within the range of 0.2 to 3++ m. If the length is less than 0.2 m, a sufficient sound absorption effect cannot be obtained, and if it exceeds 3 m, the flexibility will deteriorate and processing and construction will become difficult.
植毛するひげ２の材質、長さ、数は、繊維体１の材質、
配列間隔に応じて適宜設定するのが望ましい。The material, length, and number of hairs 2 to be implanted are determined by the material of the fiber body 1,
It is desirable to set it appropriately according to the arrangement interval.
このように構成された吸音材圧の吸音率を１２５〜４０
００ Ｈｚの周波数帯域について残響室法によシ測定し
たところ第２図に特性線（１）にて示す如く、はぼ０．
６〜０，８の範囲にあることが判った。これに対して単
に多孔性材料である織布を利用した従来の吸音材では、
同図に特性線（ＩＩ）にて併記した通りほぼ０．２〜０
．４の吸音率であった。The sound absorption coefficient of the sound absorbing material pressure configured in this way is set to 125 to 40.
When the frequency band of 0.00 Hz was measured using the reverberation chamber method, as shown by the characteristic line (1) in Fig. 2, the frequency range was approximately 0.00 Hz.
It was found that it was in the range of 6 to 0.8. In contrast, conventional sound absorbing materials that simply use woven fabric, which is a porous material,
As shown in the characteristic line (II) in the same figure, it is approximately 0.2 to 0.
．． The sound absorption coefficient was 4.
このように実施例の吸音材ＬＡは、広帯域に亘る周波数
の音波を高い吸音率で吸収することができる。また、加
工、施工に適した可撓性を有するので、種々の用途の建
築材料に極めて有効なものである。As described above, the sound absorbing material LA of the example can absorb sound waves having a wide range of frequencies with a high sound absorption coefficient. In addition, it has flexibility suitable for processing and construction, making it extremely effective as a building material for various uses.
なお、残響室法吸音率とは、 ＪｆＳ−Ａ−１４０９に
基づいた音響に関する試験であり、残響室で中心周波数
が１２５〜４０００ Ｈｚの範囲で音波を発生させ、試
料を残響室内に入れた状態と入れない状態の残響時間の
差を係数で表わしたものである。この場合の測定装置は
、残響室、音源装置、受信及び記録装置で構成される。Note that the reverberation chamber method sound absorption coefficient is an acoustic test based on JfS-A-1409, in which sound waves are generated in a reverberation chamber with a center frequency in the range of 125 to 4000 Hz, and a sample is placed inside the reverberation chamber. The difference in reverberation time with and without reverberation is expressed as a coefficient. The measuring device in this case consists of a reverberation chamber, a sound source device, and a receiving and recording device.
残響室は、容量が１５０ Ｍ”以上で形状は６面ないし
８面で構成される。測定試料ｔよ、８．５〜１２ｍ２ま
での面積で長さに対する幅の比が１．３〜１．５までの
長方形とし、室内の一面の中央部に集中配置される。残
響室法吸音率の算出は、次式によシ行われるっ
但し、α ：残響室吸音率
ＴＩ＝試料を入れた状態における残響時間（ｓｅｅ ）
で３：試料を入れない状態における残響時間（ｓｅｅ）
Ｖ：残響室容量（ｍ”）
Ｓ：試料面積（ｍ２）
Ｃ： 空気中の音速（ｍ／５ｅｅ）Ｃ＝３３１．５＋０
．６１ｔｔ：空気中の温度
第５図は、本発明の他の実施例を示すものであり、繊維
体１１にひげを植毛していない点だけが実施例のものと
異なる吸音材、ＬＡである。The reverberation chamber has a capacity of 150 M" or more and a shape of 6 to 8 sides. The measurement sample t has an area of 8.5 to 12 m2 and a width to length ratio of 1.3 to 1. 5, and are concentrated in the center of one side of the room. Calculation of the sound absorption coefficient using the reverberation room method is performed using the following formula. However, α: Reverberation room sound absorption coefficient TI = state with sample in place. Reverberation time (see)
3: Reverberation time without sample (see)
V: Reverberation chamber capacity (m”) S: Sample area (m2) C: Speed of sound in air (m/5ee) C=331.5+0
．． 61tt: Temperature in air FIG. 5 shows another example of the present invention, and is a sound absorbing material, LA, which differs from that of the example only in that the fibrous body 11 is not grafted with hair.
このような吸音材■では、第６図に特性線（４）に示す
如く、６０〜４０００ Ｈｚの周波数帯域の音波につい
てほぼ０．５〜０．７の吸音率を有することが判っ九。It has been found that such sound absorbing material (1) has a sound absorption coefficient of approximately 0.5 to 0.7 for sound waves in the frequency band of 60 to 4000 Hz, as shown by characteristic line (4) in FIG.
第７図は、本発明の他の実施例を示すものであり、繊維
体１２にひげを植毛せず、かつ、横方向の配列間隔を一
定にした点が実施例のものと異なる吸音材−３０である
。このような吸音材３０では、第８図に特性線嘔にて示
す如く、１２５〜４０００ Ｈｚの周波数帯域の音波に
ついてほぼ０．３〜０．６の吸音率を有することが判っ
た。FIG. 7 shows another embodiment of the present invention, which is a sound-absorbing material that differs from the embodiment in that the fibrous body 12 is not seeded with hair and the lateral arrangement spacing is constant. It is 30. It has been found that such a sound absorbing material 30 has a sound absorption coefficient of approximately 0.3 to 0.6 for sound waves in the frequency band of 125 to 4000 Hz, as shown by the characteristic line in FIG.
以上説明した如く、本発明に係る吸音材によれば、高い
吸音率で広範囲の周波数帯域の音波を容易に吸収するこ
とができるものである。As explained above, the sound absorbing material according to the present invention can easily absorb sound waves in a wide frequency band with a high sound absorption coefficient.
第１図（Ａ）は、本発明の一実雄例の平面図、同図（Ｂ
）は、同実施例の１ｉｌｌ１１面図、第３図は第１図（
Ａ）の部分的な拡大平面図、第４図は、第３図の側ｊｉ
ｆ図、第２図、第６図及び第８図は、吸音率と周波数と
の関係を示す特性図、第５図及び第７図は本発明の他の
実施例の平面図である。
１．１１．１２・・・繊維体、２・・・ひげ、３・・・
有機重合体、１θ、２０，３０・・・吸音材。
出願人代理人 弁理士 鈴 江 武 彦第１図
第２図
第３図
第４図
第５図
第６図FIG. 1 (A) is a plan view of one example of the present invention, and FIG.
) is a 1ill11 side view of the same example, and Figure 3 is a view of Figure 1 (
A) is a partially enlarged plan view of FIG.
Fig. f, Fig. 2, Fig. 6, and Fig. 8 are characteristic diagrams showing the relationship between sound absorption coefficient and frequency, and Fig. 5 and Fig. 7 are plan views of other embodiments of the present invention. 1.11.12...fibrous body, 2...beard, 3...
Organic polymer, 1θ, 20, 30...Sound absorbing material. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (2)
質繊維からなる繊維体で形成され、該繊維体の縦および
／または横の間隔を任意に配列してなる織布からなるこ
とを特徴とする吸音材。(1) It is characterized by being made of a woven fabric made of fibrous bodies made of organic fibers or inorganic fibers coated with an organic polymer on the surface, and in which the vertical and/or horizontal intervals of the fibrous bodies are arbitrarily arranged. sound absorbing material.
れていることを特徴とする特許請求の範囲第１項記載の
吸音材。(2) The sound absorbing material according to claim 1, wherein a large number of hairs are flocked on one or both sides of the woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162553A JPS6228435A (en) | 1985-07-23 | 1985-07-23 | Sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162553A JPS6228435A (en) | 1985-07-23 | 1985-07-23 | Sound absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6228435A true JPS6228435A (en) | 1987-02-06 |
Family
ID=15756777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60162553A Pending JPS6228435A (en) | 1985-07-23 | 1985-07-23 | Sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6228435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008537604A (en) * | 2005-04-04 | 2008-09-18 | ヘクセル コーポレイション | Absorbing septum, cap, and honeycomb body |
| EP2503037A1 (en) * | 2011-03-23 | 2012-09-26 | Autoliv Development AB | A fabric for use in the manufacture of an inflatable air-bag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939226B1 (en) * | 1970-10-30 | 1974-10-24 | ||
| JPS5032622U (en) * | 1973-07-17 | 1975-04-09 |
-
1985
- 1985-07-23 JP JP60162553A patent/JPS6228435A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939226B1 (en) * | 1970-10-30 | 1974-10-24 | ||
| JPS5032622U (en) * | 1973-07-17 | 1975-04-09 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008537604A (en) * | 2005-04-04 | 2008-09-18 | ヘクセル コーポレイション | Absorbing septum, cap, and honeycomb body |
| JP2012190027A (en) * | 2005-04-04 | 2012-10-04 | Hexcel Corp | Acoustic septum cap honeycomb |
| EP2503037A1 (en) * | 2011-03-23 | 2012-09-26 | Autoliv Development AB | A fabric for use in the manufacture of an inflatable air-bag |
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