JP2002069823A - Sound absorbing material containing melt-blown nonwoven fabric - Google Patents
Sound absorbing material containing melt-blown nonwoven fabricInfo
- Publication number
- JP2002069823A JP2002069823A JP2000268456A JP2000268456A JP2002069823A JP 2002069823 A JP2002069823 A JP 2002069823A JP 2000268456 A JP2000268456 A JP 2000268456A JP 2000268456 A JP2000268456 A JP 2000268456A JP 2002069823 A JP2002069823 A JP 2002069823A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing material
- sound absorbing
- nonwoven fabric
- melt
- sound
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、メルトブローン不
織布層を含む繊維集合体からなる吸音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing material comprising a fiber assembly including a melt blown nonwoven fabric layer.
【０００２】[0002]
【従来の技術】自動車のエンジンルームや家電製品等に
内包される吸音材として、従来は単層の有機、無機の繊
維集積体が多く用いられている。これらの繊維集積体
は、発生する騒音を吸収し減衰させる作用を有している
が、その効果は必ずしも充分でなく不満足なものが多か
った。また、見掛け密度の非常に小さい極細繊維層を表
面層とする２層以上の繊維集積体からなる吸音材もある
が、表面の遮音性能が劣るという課題があった。2. Description of the Related Art Conventionally, a single-layer organic or inorganic fiber assembly has been often used as a sound-absorbing material included in an engine room of an automobile, a home electric appliance or the like. These fiber aggregates have a function of absorbing and attenuating the generated noise, but the effect is not always sufficient and is often unsatisfactory. In addition, there is a sound absorbing material including two or more layers of fiber aggregates having a very small apparent fiber layer having a very small apparent density as a surface layer, but there is a problem that the sound insulation performance of the surface is inferior.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記のよう
な問題を解決しようとするものであり、耐熱性に優れ、
かつ騒音等の吸音性能に著しく優れた新規な吸音材を提
供することを目的とするものである。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and has excellent heat resistance.
It is another object of the present invention to provide a novel sound absorbing material which is extremely excellent in sound absorbing performance such as noise.
【０００４】[0004]
【課題を解決するための手段】本発明者は、上記の課題
を種々検討した結果、特定の見掛け密度を有し、構成繊
維が平面状に集積されてなる緻密構造のメルトブローン
不織布と他の繊維集合体とを、メルトブローン不織布の
平面状態を保ったまま接合一体化することにより、吸音
性能が飛躍的に向上し上記課題が解決できることを見出
し、本発明を完成するに至った。As a result of various studies on the above-mentioned problems, the present inventor has found that a melt-blown nonwoven fabric having a specific apparent density and having a dense structure in which constituent fibers are accumulated in a planar shape, and other fibers. The present inventors have found that by joining and assembling the aggregate while maintaining the flat state of the melt blown nonwoven fabric, the sound absorbing performance is dramatically improved and the above-mentioned problem can be solved, and the present invention has been completed.
【０００５】すなわち、本発明は、見掛け密度が０．０
１〜０．１０ｇ／ｃｍ3、目付が５０〜２０００ｇ／ｍ2
である繊維集合体からなる基層と、融点２００℃以上の
熱可塑性重合体からなり、平均繊維径１０μｍ以下の繊
維が実質的に平面状に集積した見掛け密度０．１〜０．
４ｇ／ｃｍ3、目付５〜３００ｇ／ｍ2のメルトブローン
不織布との積層体からなる吸音材であって、該吸音材の
厚みは５〜５０ｍｍであり、かつメルトブローン不織布
からなる面を音の入射面とすることを特徴とする吸音材
である。That is, according to the present invention, the apparent density is 0.0
1 to 0.10 g / cm 3 , basis weight 50 to 2000 g / m 2
And a thermoplastic polymer having a melting point of 200 ° C. or more and an average fiber diameter of 10 μm or less.
A sound-absorbing material comprising a laminate with a melt-blown nonwoven fabric having a weight of 4 g / cm 3 and a basis weight of 5 to 300 g / m 2 , wherein the thickness of the sound-absorbing material is 5 to 50 mm, and the surface formed of the melt-blown nonwoven fabric has a sound incident surface. It is a sound absorbing material characterized by the following.
【０００６】[0006]
【発明の実施の形態】本発明の吸音材に使用されるメル
トブローン不織布は、ポリエステル、ナイロン、ポリビ
ニルアルコール、ポリカーボネート、ポリフェニレンサ
ルファイドなどの融点が２００℃以上の熱可塑性重合体
からなり、用途によって好適な熱可塑性重合体を選ぶこ
とが望ましい。たとえば、自動車のエンジンルーム等の
特に耐熱性の要求される吸音材の分野では、耐熱性に優
れたポリブチレンテレフタレートなどのポリエステルや
ポリフェニレンサルファイドなどの重合体を用いること
が望ましい。また、メルトブローン不織布は平均繊維径
が１０μｍ以下の繊維からなり、基層との積層後におい
て構成繊維が実質的に平面状に集積していることが重要
である。メルトブローン法によって平均繊維径が１０μ
ｍを超える不織布を得ることは可能であるが、平均繊維
径が１０μｍを超えるメルトブローン不織布では本発明
の目的を達成することはできない。より好ましくは、２
μｍ〜８μｍの平均繊維径を持つ繊維からなるメルトブ
ローン不織布を使用することが望まれる。さらに、本発
明に用いられるメルトブローン不織布の目付は、５ｇ／
ｍ2以上であることが必要であり、好ましくは２０ｇ／
ｍ2以上である。目付が５ｇ／ｍ2未満では基層となる繊
維集積体と接合一体化した場合に充分な吸音効果を発揮
することができない。目付の上限は経済性の観点から３
００ｇ／ｍ2以下、好ましくは１００ｇ／ｍ2以下であ
る。BEST MODE FOR CARRYING OUT THE INVENTION The melt blown nonwoven fabric used for the sound absorbing material of the present invention is made of a thermoplastic polymer having a melting point of 200 ° C. or more, such as polyester, nylon, polyvinyl alcohol, polycarbonate, and polyphenylene sulfide. It is desirable to choose a thermoplastic polymer. For example, in the field of sound-absorbing materials requiring particularly heat resistance, such as an engine room of an automobile, it is desirable to use a polymer such as polyester or polyphenylene sulfide, which is excellent in heat resistance, such as polybutylene terephthalate. In addition, the melt blown nonwoven fabric is made of fibers having an average fiber diameter of 10 μm or less, and it is important that the constituent fibers are substantially planarly accumulated after lamination with the base layer. Average fiber diameter is 10μ by melt blown method
Although it is possible to obtain a nonwoven fabric exceeding m, the object of the present invention cannot be achieved with a melt blown nonwoven fabric having an average fiber diameter exceeding 10 μm. More preferably, 2
It is desirable to use a melt blown nonwoven fabric made of fibers having an average fiber diameter of μm to 8 μm. Furthermore, the basis weight of the melt blown nonwoven fabric used in the present invention is 5 g /
m 2 or more, preferably 20 g /
m 2 or more. When the basis weight is less than 5 g / m 2 , a sufficient sound absorbing effect cannot be exerted when the fiber integrated body as a base layer is joined and integrated. The upper limit of the basis weight is 3 from the viewpoint of economy.
200 g / m 2 or less, preferably 100 g / m 2 or less.
【０００７】また、メルトブローン不織布の見掛け密度
は、０．１〜０．４ｇ／ｃｍ3であることが重要であ
り、見掛け密度が０．１ｇ／ｃｍ3未満では取り扱いに
くく好ましくない、一方、見掛け密度が０．４ｇ／ｃｍ
3を超えると効果が小さくなるという問題が生じる。よ
って、好ましくは０．１５〜０．３５ｇ／ｃｍ3での見
掛け密度を有していることが望まれる。Further, the apparent density of the meltblown nonwoven fabric, it is important that a 0.1 to 0.4 g / cm 3, an apparent density of undesirable difficult to handle is less than 0.1 g / cm 3, whereas the apparent density Is 0.4g / cm
When it exceeds 3 , a problem that the effect is reduced occurs. Therefore, it is desirable to have an apparent density of preferably 0.15 to 0.35 g / cm 3 .
【０００８】さらに、本発明の吸音材においてメルトブ
ローン不織布は、不織布製造工程で集積ネットなどの捕
集面上に平面状に集積され、繊維は三次元方向には殆ど
配列していない。このような繊維ウエブは繊維同志が熱
融着してシートを形成しているが、もし次の接合工程で
取扱い出来ない場合は、熱エンボスや熱カレンダーなど
の方法でシート化しても差し支えない。熱エンボスはで
きるだけ行わない方が望ましいが、エンボスカレンダー
を行う場合は、エンボス面積は４０％以下、特に１０％
以下であることが望ましい。なぜならエンボス部分がフ
イルム化しやすく、この様なフイルム化された部分は繊
維部分と比べて吸音効果が低くなるからである。Further, in the sound-absorbing material of the present invention, the melt-blown non-woven fabric is accumulated in a plane on a collecting surface such as an accumulation net in a non-woven fabric manufacturing process, and the fibers are hardly arranged in a three-dimensional direction. Such a fiber web is formed by fusing the fibers together to form a sheet. If the sheet cannot be handled in the next joining step, the sheet may be formed by a method such as hot embossing or heat calendering. Although it is desirable not to perform heat embossing as much as possible, when performing emboss calendering, the emboss area is 40% or less, particularly 10%.
It is desirable that: This is because the embossed portion is easily formed into a film, and such a filmed portion has a lower sound absorbing effect than the fiber portion.
【０００９】メルトブローン不織布と接合一体化させる
基層は、見掛け密度が０．０１〜０．１０ｇ／ｃｍ3、
目付が５０〜２０００ｇ／ｍ2である繊維集合体であっ
て、有機系、無機系の天然繊維や合成繊維を適宜用いて
得られる繊維集合体を使用することができる。見掛け密
度が０．０１ｇ／ｃｍ3未満では取り扱い難いという点
が問題となり、０．１０ｇ／ｃｍ3を超えると吸音効果
が劣るという問題が生じる。従って、見掛け密度が０．
０２〜０．０８ｇ／ｃｍ3であることが好ましい。ま
た、目付が５０ｇ／ｍ2未満では効果が得にくく、２０
００ｇ／ｍ2を超えると経済的でない。従って、目付は
１００〜１５００ｇ／ｃｍ3であることが好ましい。The base layer bonded and integrated with the melt blown nonwoven fabric has an apparent density of 0.01 to 0.10 g / cm 3 ,
It is a fiber aggregate having a basis weight of 50 to 2000 g / m 2 , and a fiber aggregate obtained by appropriately using an organic or inorganic natural fiber or a synthetic fiber can be used. If the apparent density is less than 0.01 g / cm 3, it is difficult to handle, and if the apparent density is more than 0.10 g / cm 3 , there is a problem that the sound absorbing effect is poor. Therefore, the apparent density is 0.
It is preferably from 02 to 0.08 g / cm 3 . If the basis weight is less than 50 g / m 2, it is difficult to obtain the effect,
If it exceeds 00 g / m 2 , it is not economical. Therefore, the basis weight is preferably from 100 to 1500 g / cm 3 .
【００１０】この繊維集合体は、例えばスパンボンド法
やカード法などによる乾式法、あるいは抄紙による湿式
法などによって製造することができる。準備された繊維
集合体は、含浸やスプレーなどによる樹脂接着や融着繊
維による熱溶融接着、或はニードルパンチや水流絡合な
どの機械的絡合及びこれらの組み合わせなど種々の手段
で結合されて基層の繊維集合体となる。The fiber aggregate can be manufactured by, for example, a dry method such as a spunbond method or a card method, or a wet method using papermaking. The prepared fiber aggregate is bonded by various means such as resin bonding by impregnation or spraying, hot-melt bonding by fusion fibers, or mechanical entanglement such as needle punching or water entanglement and a combination thereof. It becomes a fiber aggregate of the base layer.
【００１１】基層とメルトブローン不織布とは接合によ
って一体化されることが好ましい。接合方法はホットメ
ルトや接着ネットなどの樹脂接着剤や融着繊維などが主
に用いられるが、この場合の重ね合わせの順序や層数に
は特に制限はない。メルトブローン不織布は吸音材の少
なくとも一面に現れるように積層配置されているなら、
本発明で規定する目付や吸音材の厚みを超えない範囲で
複数枚を積層することもできる。同様に、基層となる繊
維集合体も一層に限らず必要に応じて二層以上積層でき
る。これらはメルトブローン不織布の目付と合わせて、
吸音性能の要求度に応じて適宜変更することができる。
メルトブローン不織布と基層との層間接合において注意
することは、例えばニードルパンチなどの機械的な絡合
手段はできれば避けたほうが好ましい。このような手段
では、互いの層を貫通する針の作用によって、緻密なメ
ルトブローン不織布層に開孔が生じてしまう。また、平
面状に集積していたメルトブローン不織布の構成繊維が
上記手段の作用により立体状三次元的に再配列するよう
になる。これらの２点はいづれも吸音性能に極めて悪い
影響をもたらす。従って、層同志の接合においてはメル
トブローン不織布の二次元的繊維配列をできるだけ損な
わないように行う必要がある。The base layer and the melt blown nonwoven fabric are preferably integrated by joining. As a joining method, a resin adhesive such as a hot melt or an adhesive net, a fused fiber, or the like is mainly used, but there are no particular restrictions on the order of superposition or the number of layers. If the melt-blown non-woven fabric is layered so that it appears on at least one side of the sound absorbing material,
A plurality of sheets can be laminated within a range not exceeding the basis weight or the thickness of the sound absorbing material specified in the present invention. Similarly, the fiber aggregate serving as the base layer is not limited to one layer, and two or more layers can be laminated as needed. These are combined with the basis weight of the melt blown nonwoven fabric,
It can be appropriately changed according to the required degree of the sound absorbing performance.
It is preferable to avoid mechanical entanglement such as needle punching, if possible, when paying attention to interlayer bonding between the meltblown nonwoven fabric and the base layer. In such a means, pores are created in the dense meltblown nonwoven fabric layer by the action of needles penetrating each other. In addition, the constituent fibers of the melt-blown nonwoven fabric that have been accumulated in a planar shape are rearranged three-dimensionally and three-dimensionally by the action of the above means. Each of these two points has a very bad influence on the sound absorbing performance. Therefore, it is necessary to join the layers so as not to impair the two-dimensional fiber arrangement of the melt blown nonwoven fabric as much as possible.
【００１２】本発明の吸音材の全体厚みは５〜５０ｍｍ
である。厚みが５ｍｍより薄いと吸音性能に充分な効果
が得られず好ましくない。一方、厚みが５０ｍｍを超え
ると吸音性能の点では好ましいが、吸音材として使用す
る場合その設置スペースが過大となり商品設計上望まし
くない。更には切断、成型など加工の面でも扱い難くな
るので好ましくないし過剰の性能を付与することは不経
済でもある。The overall thickness of the sound absorbing material of the present invention is 5 to 50 mm
It is. If the thickness is less than 5 mm, a sufficient effect on the sound absorbing performance cannot be obtained, which is not preferable. On the other hand, when the thickness exceeds 50 mm, it is preferable in terms of sound absorbing performance, but when used as a sound absorbing material, the installation space becomes excessively large, which is not desirable in product design. Furthermore, it is difficult to handle in terms of processing such as cutting and molding, so that it is not preferable to provide excessive performance and it is uneconomical.
【００１３】このようにして得られる本発明の吸音材
は、耐熱性に優れ、かつ騒音等の吸音性能に優れてお
り、自動車等の車輌のエンジンルームや家電製品等に内
包される吸音材として、また、建築物の壁装材、ハウス
ラップ等に使用することができる。The sound absorbing material of the present invention thus obtained is excellent in heat resistance and sound absorbing performance such as noise, and is used as a sound absorbing material included in an engine room of a vehicle such as an automobile, a home electric appliance, and the like. Also, it can be used for wall coverings of buildings, house wraps and the like.
【００１４】[0014]
【実施例】以下、本発明を実施例により説明するが、本
発明は何らこれらに限定されるものではない。EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples.
【００１５】実施例１及び比較例１ ポリブチレンテレフタレート(融点２３０℃)からなるメ
ルトブローン不織布を作成し、熱エンボスカレンダー処
理を行なって、平均繊維径が４．２μｍ、見掛け密度
０．２５ｇ／ｃｍ3、目付３５ｇ／ｍ2の不織布を得た。
該不織布のドット状パターンによるンボス面積は４．１
％であった。次に単繊維繊度が１３ｄｔｅｘで５１ｍｍ
カット長のポリエステル繊維４０質量％と、単繊維繊度
が３．３ｄｔｅｘで４０ｍｍカット長のポリエステル繊
維４５質量％と、ポリエチレンテレフタレートを芯成分
とし軟化点が約１７０℃である共重合ポリエステルを鞘
成分とする単繊維繊度２．２ｄｔｅｘのポリエステル複
合繊維１５質量％とからなる目付２００ｇ／ｍ2のカー
ドウエブ及び目付２４５ｇ／ｍ2のパンチフェルトを準
備した。次いで、上記目付２００ｇ／ｍ2のカードウエ
ブを１８０℃のドライヤーに通して熱融着加工を行なっ
た。見掛け密度は０．０１７ｇ／ｃｍ3であった。引き
続き、この不織布の表面側に目付１０ｇ／ｍ2のポリア
ミド溶融接着ネットを置き、その上に前記のメルトブロ
ーン不織布を重ねて積層体とし、加熱ロール間を通過さ
せて融着接合して一体化し、目付２４５ｇ／ｍ2、厚み
１３ｍｍの吸音材(実施例１)を得た。この吸音材のメル
トブローン不織布を構成する繊維の配列状態を拡大観察
したところ、メルトブローン不織布を構成する繊維は実
質的に平面状に集積した状態で存在していることが確認
された。Example 1 and Comparative Example 1 A melt-blown nonwoven fabric made of polybutylene terephthalate (melting point 230 ° C.) was prepared and subjected to hot emboss calendering. The average fiber diameter was 4.2 μm, and the apparent density was 0.25 g / cm 3. A nonwoven fabric with a basis weight of 35 g / m 2 was obtained.
The emboss area of the non-woven fabric according to the dot pattern is 4.1.
%Met. Next, single fiber fineness is 51mm at 13dtex
A polyester fiber having a cut length of 40% by mass, a monofilament fineness of 3.3 dtex and a polyester fiber having a cut length of 40 mm and a mass of 45% by mass, and a copolyester having polyethylene terephthalate as a core component and a softening point of about 170 ° C. being a sheath component. were prepared single fiber fineness 2.2dtex punch felt polyester bicomponent fibers 15% by mass consists of basis weight 200 g / m 2 of the card web and the basis weight 245 g / m 2 of the. Next, the card web having a basis weight of 200 g / m 2 was passed through a drier at 180 ° C. to perform a heat fusion process. The apparent density was 0.017 g / cm 3 . Subsequently, a polyamide melt-bonded net having a basis weight of 10 g / m 2 was placed on the surface side of the non-woven fabric, and the melt-blown non-woven fabric was layered thereon to form a laminate, passed between heating rolls and fused and joined to be integrated, A sound absorbing material (Example 1) having a basis weight of 245 g / m 2 and a thickness of 13 mm was obtained. When the arrangement state of the fibers constituting the melt-blown nonwoven fabric of the sound absorbing material was enlarged and observed, it was confirmed that the fibers constituting the meltblown nonwoven fabric were present in a substantially planar state in a state of being accumulated.
【００１６】かかる本発明の吸音材と前述組成を有する
目付２４５ｇ／ｍ2のパンチフェルトのみの吸音材（比
較例１、厚み１５ｍｍ）とについて、吸音性能をＪＩＳ
Ａ１４０９の残響室法吸音率測定法によって調べたと
ころ、本発明の吸音材は比較例に比べ１０００ヘルツ以
上の領域で約３割、３０００ヘルツでは約５割以上良好
な吸音性能を示し、優れた吸音材であることが判明し
た。The sound absorbing performance of the sound absorbing material of the present invention and the sound absorbing material having the above-described composition and having only the punch felt having a basis weight of 245 g / m 2 (Comparative Example 1, thickness 15 mm) was measured according to JIS.
A1409 showed that the sound-absorbing material of the present invention showed a good sound absorbing performance of about 30% or more in the region of 1000 Hz or more and 3000 Hz or more about 50% or more as compared with the comparative example. It turned out to be a sound absorbing material.
【００１７】実施例２ 単繊維繊度１３ｄｔｅｘでカット長５１ｍｍのポリエス
テル繊維３８質量％、単繊維繊度３．３ｄｔｅｘでカッ
ト長５１ｍｍのポリビニルアルコール繊維５０質量％、
および実施例１で用いた単繊維繊度２．２ｄｔｅｘのポ
リエステル複合繊維１２質量％からなるカードウエブを
作成し、該ウエブを熱風処理して厚さ１５ｍｍ、目付２
５０ｇ／ｍ2のフェルトを得た。一方、平均繊維径３μ
ｍで、目付５０ｇ／ｍ2、見掛け密度０．３０ｇ／ｃｍ3
を有するメルトブローン不織布を作成した。この不織布
の上にシンター法によってエチレン-酢酸ビニル系ホッ
トメルト接着剤を３０ｇ／ｍ2の割合で塗布した。次に
上記フエルトとメルトブローン不織布とを、ホットメル
ト接着剤塗布面が中間となるように積層し熱カレンダー
によって両者を接着した。得られた積層体は厚さ１４ｍ
ｍで実施例１と同様の優れた吸音性能を有していた。Example 2 38% by mass of polyester fiber having a single fiber fineness of 13 dtex and a cut length of 51 mm, 50% by mass of polyvinyl alcohol fiber having a single fiber fineness of 3.3 dtex and a cut length of 51 mm,
And a card web composed of 12% by mass of the polyester composite fiber having a single fiber fineness of 2.2 dtex used in Example 1 was prepared, and the web was treated with hot air to have a thickness of 15 mm and a basis weight of 2
A felt of 50 g / m 2 was obtained. On the other hand, average fiber diameter 3μ
m, basis weight 50 g / m 2 , apparent density 0.30 g / cm 3
The melt blown nonwoven fabric which has this was produced. An ethylene-vinyl acetate hot melt adhesive was applied on the nonwoven fabric at a rate of 30 g / m 2 by a sinter method. Next, the felt and the melt-blown nonwoven fabric were laminated so that the hot-melt-adhesive-applied surface was in the middle, and both were adhered by a hot calender. The obtained laminate has a thickness of 14 m.
m had the same excellent sound absorbing performance as in Example 1.
【００１８】[0018]
【発明の効果】本発明の吸音材は、従来の吸音材と異な
り、特定の見掛け密度及び目付を有する少なくとも一層
のメルトブローン不織布層を表面層として含むため吸音
性能に非常に優れるものである。The sound-absorbing material of the present invention, unlike the conventional sound-absorbing material, has at least one melt-blown nonwoven fabric layer having a specific apparent density and basis weight as a surface layer, and thus has a very excellent sound absorbing performance.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3D023 BA02 BA03 BB16 BB21 BC00 BD21 BE04 BE06 4F100 AK42 BA02 BA25 DD01 DG01B DG06A DG15B EC032 GB08 GB32 GB48 HB21 JA04B JA13A JA13B JB16B JH01 YY00A YY00B 4L047 AA21 AB07 BA07 BA09 BA23 CA05 CA07 CA19 CB03 EA05 EA10 5D061 AA06 AA22 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) CB03 EA05 EA10 5D061 AA06 AA22
Claims (4)
ｃｍ3、目付が５０〜２０００ｇ／ｍ2である繊維集合体
からなる基層と、融点２００℃以上の熱可塑性重合体か
らなり、平均繊維径１０μｍ以下の繊維が実質的に平面
状に集積した見掛け密度０．１〜０．４ｇ／ｃｍ3、目
付５〜３００ｇ／ｍ2のメルトブローン不織布との積層
体からなる吸音材であって、該吸音材の厚みは５〜５０
ｍｍであり、かつメルトブローン不織布からなる面を音
の入射面とすることを特徴とする吸音材。1. An apparent density of 0.01 to 0.10 g /
An apparent base layer composed of a fiber aggregate having a cm 3 and a basis weight of 50 to 2000 g / m 2 and a thermoplastic polymer having a melting point of 200 ° C. or more and having an average fiber diameter of 10 μm or less, which is substantially planarized. A sound absorbing material comprising a laminate with a melt-blown nonwoven fabric having a density of 0.1 to 0.4 g / cm 3 and a basis weight of 5 to 300 g / m 2 , wherein the thickness of the sound absorbing material is 5 to 50
A sound-absorbing material, characterized in that the surface of the sound-absorbing material is made of a melt-blown nonwoven fabric.
輌。2. A vehicle using the sound absorbing material according to claim 1.
気製品。3. An electric product using the sound absorbing material according to claim 1.
材。4. A wall covering comprising the sound absorbing material according to claim 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000268456A JP4361201B2 (en) | 2000-09-05 | 2000-09-05 | Sound-absorbing material including meltblown nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000268456A JP4361201B2 (en) | 2000-09-05 | 2000-09-05 | Sound-absorbing material including meltblown nonwoven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002069823A true JP2002069823A (en) | 2002-03-08 |
| JP4361201B2 JP4361201B2 (en) | 2009-11-11 |
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ID=18755235
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000268456A Expired - Lifetime JP4361201B2 (en) | 2000-09-05 | 2000-09-05 | Sound-absorbing material including meltblown nonwoven fabric |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019062A (en) * | 2002-06-18 | 2004-01-22 | Toyobo Co Ltd | Acoustic material |
| JP2005178316A (en) * | 2003-12-24 | 2005-07-07 | Toyota Boshoku Corp | Laminated nonwoven fabric and inner trim material of automobile |
| JP2006028709A (en) * | 2004-07-21 | 2006-02-02 | Asahi Kasei Fibers Corp | Sound-absorbing laminate and method for producing the same |
| JP2006028708A (en) * | 2004-07-21 | 2006-02-02 | Asahi Kasei Fibers Corp | Sound-absorbing laminate and method for producing the same |
| JP2009000843A (en) * | 2007-06-20 | 2009-01-08 | Asahi Kasei Fibers Corp | Compound sound-absorbing material |
| JP2013014856A (en) * | 2011-07-04 | 2013-01-24 | Yuniseru Kk | Skin for sound absorbing material |
| JP2016142830A (en) * | 2015-01-30 | 2016-08-08 | 株式会社オートネットワーク技術研究所 | Sound absorbing material and wire harness having sound absorbing material |
| JP2016142831A (en) * | 2015-01-30 | 2016-08-08 | 株式会社オートネットワーク技術研究所 | Sound absorber and sound-absorber-equipped wire harness |
-
2000
- 2000-09-05 JP JP2000268456A patent/JP4361201B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019062A (en) * | 2002-06-18 | 2004-01-22 | Toyobo Co Ltd | Acoustic material |
| JP2005178316A (en) * | 2003-12-24 | 2005-07-07 | Toyota Boshoku Corp | Laminated nonwoven fabric and inner trim material of automobile |
| JP2006028709A (en) * | 2004-07-21 | 2006-02-02 | Asahi Kasei Fibers Corp | Sound-absorbing laminate and method for producing the same |
| JP2006028708A (en) * | 2004-07-21 | 2006-02-02 | Asahi Kasei Fibers Corp | Sound-absorbing laminate and method for producing the same |
| JP4540417B2 (en) * | 2004-07-21 | 2010-09-08 | 旭化成せんい株式会社 | Sound absorbing material and manufacturing method thereof |
| JP4574262B2 (en) * | 2004-07-21 | 2010-11-04 | 旭化成せんい株式会社 | SOUND ABSORBING LAMINATE AND METHOD FOR PRODUCING THE SAME |
| JP2009000843A (en) * | 2007-06-20 | 2009-01-08 | Asahi Kasei Fibers Corp | Compound sound-absorbing material |
| JP2013014856A (en) * | 2011-07-04 | 2013-01-24 | Yuniseru Kk | Skin for sound absorbing material |
| JP2016142830A (en) * | 2015-01-30 | 2016-08-08 | 株式会社オートネットワーク技術研究所 | Sound absorbing material and wire harness having sound absorbing material |
| JP2016142831A (en) * | 2015-01-30 | 2016-08-08 | 株式会社オートネットワーク技術研究所 | Sound absorber and sound-absorber-equipped wire harness |
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|---|---|
| JP4361201B2 (en) | 2009-11-11 |
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