JP3109827B2 - Sound absorbing material - Google Patents
Sound absorbing materialInfo
- Publication number
- JP3109827B2 JP3109827B2 JP02296614A JP29661490A JP3109827B2 JP 3109827 B2 JP3109827 B2 JP 3109827B2 JP 02296614 A JP02296614 A JP 02296614A JP 29661490 A JP29661490 A JP 29661490A JP 3109827 B2 JP3109827 B2 JP 3109827B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber layer
- metal fiber
- sound absorbing
- oil
- absorbing 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
Landscapes
- Exhaust Silencers (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ この発明は、フェルト状の金属繊維層を備えた吸音材
の改良に関する。Description: TECHNICAL FIELD The present invention relates to an improvement in a sound absorbing material having a felt-like metal fiber layer.
＜従来の技術＞ 金属製の吸音材として、フェルト状の金属繊維層を金
網によりサンドイッチ状に挟んで圧着成形したものが知
られている（例えば特開昭63−103299号公報参照）。こ
れは、従来のグラスウール製などと比べて含水しにく
く、また含水してもすぐに乾燥して吸音特性を回復でき
る等の利点があるとされている。<Prior Art> As a metal sound absorbing material, there has been known a metal sound absorbing material formed by sandwiching a felt-like metal fiber layer in a sandwich shape with a metal net (see, for example, JP-A-63-103299). This is said to be advantageous in that it is less likely to contain water than conventional glass wool and the like, and that even if it contains water, it can be dried immediately to restore sound absorbing properties.
＜発明が解決しようとする課題＞ しかしながら、上記公報のものは、例えば船の機関室
のように油が飛散し、あるいは油のミストが浮遊してい
る場所に使用するとこの油が付着し、しかも一旦付着し
た油はほとんど乾燥することがなく付着量が次第に増加
する。このため吸音特性が劣化するが、油は金属繊維層
に染み込んでいるので洗剤を含む水で洗っても油の除去
は困難で吸音特性を回復できなくなる。また、含油量が
増大すると可燃性が生ずるので、船の機関室のような場
所には安全上使用することができないという別の問題も
ある。<Problems to be solved by the invention> However, in the above-mentioned publication, when used in a place where oil is scattered or an oil mist floats, for example, in an engine room of a ship, the oil adheres, and The oil once adhered hardly dries, and the amount of the oil gradually increases. For this reason, the sound absorbing property is deteriorated. However, since the oil is soaked in the metal fiber layer, even if the oil is washed with water containing a detergent, it is difficult to remove the oil and the sound absorbing property cannot be recovered. Another problem is that if the oil content is increased, flammability occurs, so that it cannot be used safely in places such as the engine room of a ship.
この発明はこのような点に着目し、含油性がなく火災
上極めて安全であり、しかも含水、含油による吸音特性
の低下もない吸音材を提供することを目的としてなされ
たものである。The present invention has been made in view of such a point, and an object of the present invention is to provide a sound absorbing material which has no oil impregnating property, is extremely safe on fire, and has no deterioration in sound absorbing properties due to water impregnation and oil impregnation.
＜課題を解決するための手段＞ 上記の目的を達成するために、この発明の吸音材は、
フェルト状の金属繊維層の表面に金網状の表面保護材を
一体に圧着成形してなる吸音材において、金属繊維層と
表面保護材の間に油及び水を透過させない薄い軽金属性
の不燃性フィルムを介在させるようにしている。<Means for Solving the Problems> In order to achieve the above object, the sound absorbing material of the present invention comprises:
A thin, light metal, noncombustible film that does not allow oil and water to permeate between the metal fiber layer and the surface protection material. The sound absorbing material is formed by integrally pressing a wire mesh surface protection material onto the surface of a felt metal fiber layer. To intervene.
＜作 用＞ 不燃性フィルムによって油及び水の透過が防止されて
金属繊維層に油や水が染み込むことがなくなる。また不
燃性フィルムが薄いため、音は反射されることなく金属
繊維層まで到達して吸収され、吸音作用は支障なく行わ
れる。<Operation> The non-combustible film prevents oil and water from permeating, so that oil and water do not permeate the metal fiber layer. Further, since the non-combustible film is thin, the sound reaches the metal fiber layer without being reflected and is absorbed, so that the sound absorbing operation is performed without any trouble.
＜実施例＞ 次に、図示の一実施例について説明する。図におい
て、１は金属繊維層、２は表面保護材、３は不燃性フィ
ルム、４はこれらを一体にした板状の吸音材である。<Example> Next, one example of illustration is described. In the figure, 1 is a metal fiber layer, 2 is a surface protective material, 3 is a nonflammable film, and 4 is a plate-shaped sound absorbing material in which these are integrated.
金属繊維層１及び表面保護材２は、前述の公報に記載
されているものと同様な構成のものが使用可能である。
すなわち、金属繊維層１はアルミニウム、ステンレスの
ような耐食性に優れた金属の細い繊維、例えば直径が25
〜100μｍ、長さ10mm以上の繊維を絡ませて厚さ0.5〜10
mm程度のフェルト状にした層状体であり、また表面保護
材２は、金属繊維層１と同様な材質のエキスパンドメタ
ル、パンチングメタル、金網など、所定の強度を備えた
不燃性のものである。As the metal fiber layer 1 and the surface protective material 2, those having the same configurations as those described in the above-mentioned publication can be used.
That is, the metal fiber layer 1 is made of a thin metal fiber having excellent corrosion resistance such as aluminum and stainless steel, for example, having a diameter of 25 mm.
~ 100μm, length 10 ~ 10mm
The surface protective material 2 is a non-combustible material having a predetermined strength, such as an expanded metal, a punching metal, and a wire mesh made of the same material as the metal fiber layer 1.
また不燃性フィルム３は油及び水を透過させない性状
の薄膜であって、例えばアルミニウムの箔や蒸着フィル
ム等が使用されるが、その他ジュラルミン等の比較的比
重の小さい軽金属材料が使用可能であり、厚みは５〜50
μｍ程度のものが使用される。The non-combustible film 3 is a thin film that does not allow oil and water to permeate. For example, an aluminum foil or a vapor-deposited film is used, but a light metal material having a relatively small specific gravity such as duralumin can be used. The thickness is 5-50
Those having a size of about μm are used.
実施例の吸音材４は、上述した金属繊維層１と表面保
護材２の間に不燃性フィルム３を介在させてローラ圧着
法により一体に圧着成形することによって構成される。
この圧着成形によって、不燃性フィルム３に金属繊維層
１の表面の細い繊維や表面保護材２が食い込み、あるい
は金属繊維層１の繊維の一部が不燃性フィルム３を突き
抜けて表面保護材２に絡みつくため、普通の状態では各
構成部材が剥離しない程度の強度で相互に一体化され
る。なお、壁面などへの取り付けの際に取り付け部材な
どで表面が押さえられるので使用時に剥離する可能性は
少ないが、補助的に不燃性の無機質接着剤を使用し、あ
るいは部分的に強圧着部を形成して剥離強度を高めるこ
ともできる。The sound-absorbing material 4 of the embodiment is formed by integrally pressing the non-combustible film 3 between the metal fiber layer 1 and the surface protecting material 2 by a roller pressing method.
By this compression molding, the thin fibers of the surface of the metal fiber layer 1 and the surface protective material 2 penetrate into the non-combustible film 3, or a part of the fibers of the metal fiber layer 1 penetrates the non-combustible film 3 to form the surface protective material 2. Since they are entangled with each other, the components are integrated with each other with such a strength that the components do not peel in a normal state. In addition, since the surface is pressed down by a mounting member when mounting to a wall or the like, there is little possibility that it will peel off during use, but use a non-combustible inorganic adhesive supplementarily or partially apply a strong crimping part It can be formed to increase the peel strength.
実施例の吸音材４はこのような構成であり、表面保護
材２を表にして、例えば船の機関室の壁面や作業機のエ
ンジンカバーの内面等に取り付けて使用される。このた
め、実施例では不燃性フィルム３と表面保護材２は金属
繊維層１の片面にしか設けられていないが、用途によっ
ては必要に応じて金属繊維層１の両面に設けることもで
きる。The sound absorbing material 4 of the embodiment has such a configuration, and is used by attaching the surface protecting material 2 to the wall of an engine room of a ship, the inner surface of an engine cover of a working machine, or the like, with the surface protecting material 2 facing up. For this reason, in the embodiment, the non-combustible film 3 and the surface protection material 2 are provided only on one side of the metal fiber layer 1, but may be provided on both sides of the metal fiber layer 1 as needed depending on the application.
不燃性フィルム３は細かい凹凸が無数に生じており、
しかも薄いため表面から入射する音を反射するようなこ
とはなく、音は金属繊維層１に達してここでエネルギー
が吸収される。特に船の機関室で発生する音には低周波
成分が多く含まれているが、不燃性フィルム３を設ける
ことによって低周波域に対する吸音効果が向上される傾
向が見られた。これは不燃性フィルム３が共鳴すると共
に、表面に生じている細かい凹凸によってエネルギーの
吸収作用が高まるためと推定される。The incombustible film 3 has countless fine irregularities,
Moreover, since the sound is thin, the sound incident from the surface is not reflected, and the sound reaches the metal fiber layer 1 where the energy is absorbed. In particular, the sound generated in the engine room of the ship contains many low frequency components, but the provision of the non-combustible film 3 tends to improve the sound absorbing effect in the low frequency range. It is presumed that this is because the non-combustible film 3 resonates and the energy absorption action is enhanced by fine irregularities generated on the surface.
また、機関室のように油が飛散し、あるいは油のミス
トが浮遊しているような使用環境であっても、不燃性フ
ィルム３があるため付着した油が金属繊維層１にまで染
み込むことはない。また水が金属繊維層１にまで染み込
むこともないので洗剤入りの水で汚れや油を洗い流すこ
とも可能であり、吸音特性が劣化せず、しかも不燃性で
水洗可能な吸音材が得られるのである。Further, even in a use environment where oil is scattered or an oil mist floats as in an engine room, the oil adhering to the metal fiber layer 1 due to the presence of the non-combustible film 3 can be prevented. Absent. Further, since water does not penetrate into the metal fiber layer 1, it is possible to wash away dirt and oil with water containing a detergent, so that a sound absorbing material which does not deteriorate in sound absorbing properties and is nonflammable and can be washed is obtained. is there.
なお、圧着成形の際に金属繊維層１の繊維が不燃性フ
ィルム３を突き抜けて生じた穴は、極めて小さなピンホ
ールであると共にそのピンホール自体は繊維によって塞
がれている。このため、一定の粘性を持つ油や水は穴を
通りにくく、上述のように水洗を行っても水が金属繊維
層１にまで染み込むことはほとんどなく、多少水が入っ
てもそのすき間を通って自然乾燥する。また油の場合は
膠着状態となってすき間が塞がれるので、以後の油や水
の侵入が阻止されるので好都合である。The holes formed when the fibers of the metal fiber layer 1 penetrate the non-combustible film 3 during the compression molding are very small pinholes, and the pinholes themselves are closed by the fibers. For this reason, oil or water having a certain viscosity is unlikely to pass through the hole, and even if water is washed as described above, water hardly penetrates into the metal fiber layer 1, and even if some water enters, it passes through the gap. And dry naturally. In addition, in the case of oil, the gap is closed due to a state of sticking, so that the intrusion of oil and water thereafter is advantageously prevented.
＜発明の効果＞ 以上の説明から明らかなように、この発明の吸音材
は、フェルト状の金属繊維層と金網状の表面保護材の間
に油及び水を透過させない薄い軽金属製の不燃性フィル
ムを介在させて一体に圧着成形したものである。<Effects of the Invention> As is apparent from the above description, the sound absorbing material of the present invention is a thin light metal incombustible film that does not allow oil and water to permeate between a felt-like metal fiber layer and a wire mesh-like surface protection material. Are integrally formed by pressure bonding.
従って、金属繊維層に油や水が染み込むことがないた
め吸音特性が劣化せず、しかも油が染み込まずフィルム
自体が不燃性であるため、防火性が重要視される船舶の
機関室等での使用に適すると共に、機関室内における低
周波域の吸音に効果がありまた水洗可能な不燃性吸音材
を得ることができるのである。Therefore, oil and water do not penetrate into the metal fiber layer, so that the sound absorption characteristics do not deteriorate.Moreover, since the oil itself does not penetrate and the film itself is nonflammable, fire prevention is important in engine rooms and the like of ships. This makes it possible to obtain a non-combustible sound absorbing material which is suitable for use, has an effect on sound absorption in a low frequency range in the engine room, and can be washed with water.
図はこの発明の一実施例の一部を剥離して示した部分斜
視図である。 １……金属繊維層、２……表面保護材、３……不燃性フ
ィルム、４……吸音材。FIG. 1 is a partial perspective view showing a part of an embodiment of the present invention by peeling off a part. 1 ... metal fiber layer, 2 ... surface protective material, 3 ... non-combustible film, 4 ... sound absorbing material.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G10K 11/16 - 11/175 B32B 3/24 B32B 15/02 F01N 1/24 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G10K 11/16-11/175 B32B 3/24 B32B 15/02 F01N 1/24
Claims (1)
表面保護材を一体に圧着成形してなる吸音材であって、
金属繊維層と表面保護材の間に油及び水を透過させない
軽金属製の不燃性フィルムを介在させたことを特徴とす
る吸音材。1. A sound-absorbing material obtained by integrally press-molding a wire net-like surface protective material on the surface of a felt-like metal fiber layer,
A sound absorbing material comprising a light metal incombustible film that does not allow oil and water to permeate between a metal fiber layer and a surface protective material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02296614A JP3109827B2 (en) | 1990-10-31 | 1990-10-31 | Sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02296614A JP3109827B2 (en) | 1990-10-31 | 1990-10-31 | Sound absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04168496A JPH04168496A (en) | 1992-06-16 |
| JP3109827B2 true JP3109827B2 (en) | 2000-11-20 |
Family
ID=17835835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02296614A Expired - Fee Related JP3109827B2 (en) | 1990-10-31 | 1990-10-31 | Sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3109827B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3984308B2 (en) * | 1996-02-21 | 2007-10-03 | イビデン株式会社 | Silencer for internal combustion engine |
| DE29617845U1 (en) * | 1996-10-14 | 1998-02-12 | M. Faist GmbH & Co. KG, 86381 Krumbach | Device for absorbing and / or damping sound waves |
| JP4803126B2 (en) * | 2007-01-24 | 2011-10-26 | ダイキン工業株式会社 | Soundproof material for compressor |
| CN105057676B (en) * | 2015-08-12 | 2017-05-17 | 广州橙行智动汽车科技有限公司 | Metal fiber porous material with surface net-shaped sintering coating structure and manufacturing method thereof |
| CN111223473A (en) * | 2020-03-07 | 2020-06-02 | 四川昆昱环保科技有限责任公司 | Nano metal sound absorption device, material and manufacturing method thereof |
-
1990
- 1990-10-31 JP JP02296614A patent/JP3109827B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04168496A (en) | 1992-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |