JPH07114386A - High-performance sound insulating material - Google Patents
High-performance sound insulating materialInfo
- Publication number
- JPH07114386A JPH07114386A JP5282079A JP28207993A JPH07114386A JP H07114386 A JPH07114386 A JP H07114386A JP 5282079 A JP5282079 A JP 5282079A JP 28207993 A JP28207993 A JP 28207993A JP H07114386 A JPH07114386 A JP H07114386A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sound
- sound absorbing
- layer
- sound insulating
- 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
- Building Environments (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、吸音層と遮音層からな
る遮音材に関し、詳細には、例えば、自動車の車室内と
エンジンルームとを隔てるダッシュパネルに装着して、
防音効果の向上をなし得る高性能遮音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulating material comprising a sound absorbing layer and a sound insulating layer. More specifically, for example, the sound insulating material is attached to a dash panel that separates a vehicle interior from an engine room,
The present invention relates to a high performance sound insulation material capable of improving the soundproof effect.
【０００２】[0002]
【従来の技術】従来より、例えば、自動車のエンジンル
ームと車室内を隔てるダッシュパネル、フロアー、トラ
ンクルーム等の鋼板部位には、防音対策として、吸音材
と制振シートが一体化したものや、制振シートが単独で
適用され防音の用に供されたりしている。2. Description of the Related Art Conventionally, for example, as a soundproofing measure, a steel sheet part such as a dash panel, a floor, a trunk room, etc. separating an automobile engine room from a vehicle interior has a sound absorbing material integrated with a vibration damping sheet or a vibration damping sheet. A vibration sheet is applied by itself and is used for soundproofing.
【０００３】しかし、特に自動車のエンジンに起因する
騒音が車室内に侵入する場合等、より一層の遮音性の向
上が望まれているのが現状である。However, under the present circumstances, there is a demand for further improvement in sound insulation, especially when noise caused by the engine of an automobile enters the passenger compartment.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明は、す
べての周波数領域においてより一層の十分な騒音対策を
なし得ることを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it possible to take more sufficient noise countermeasures in all frequency regions.
【０００５】[0005]
【課題を解決するための手段】かかる課題を解決せんと
して、本発明者らは鋭意研究の結果、防音の用に供され
る遮音材全体構成のうち、特にエンジンに起因する騒音
が吸音層の部分を通過し、振動となって遮音層に影響を
及ぼし、遮音層の変形により振動エネルギーが車室内に
到達するため、特に低周波数領域の騒音が効果的に防音
できないことを知見し、本発明に至ったものであり、し
かして本発明の要旨は、以下に存する。In order to solve such a problem, the inventors of the present invention have as a result of earnest studies, and as a result, among the entire structure of the sound insulating material provided for soundproofing, noise caused by the engine is The present invention has been found that noise in a low frequency region cannot be effectively effectively prevented because the vibration energy passes through a portion and becomes a vibration to affect the sound insulation layer, and the vibration energy reaches the vehicle interior due to the deformation of the sound insulation layer. Therefore, the gist of the present invention lies below.
【０００６】吸音層と遮音層を一体化せしめてなる遮音
材において、吸音層が２層からなり、該吸音層のうち遮
音層に接する吸音層の成形後の厚みを他の吸音層の２倍
以上とし、面重量は０．５倍以下としてなることを特徴
とする高性能遮音材。In a sound insulating material in which a sound absorbing layer and a sound insulating layer are integrated, the sound absorbing layer is composed of two layers, and the thickness of the sound absorbing layer in contact with the sound insulating layer after molding is twice that of the other sound absorbing layers. The high-performance sound insulation material characterized in that the surface weight is 0.5 times or less.
【０００７】本発明での遮音層とは、合成ゴム、天然ゴ
ム、再生ゴム等のゴムや、歴青質物、合成樹脂等のバイ
ンダー成分に炭酸カルシウム、硫酸バリウム、タルク、
クレー、マイカ、粉砕故紙、解繊繊維、ガラスウール、
プラスチックバルーン、ガラスバルーン、シリカバルー
ン、シラスバルーン、炭素中空球等の充填材を配合し、
ディゾルバー、バンバリーミキサー、プラネタリーミキ
サー、オープンニーダー、真空ニーダー等の従来公知の
混合分散機によって分散混練して後、カレンダーロール
等の圧延機により所望の厚さの遮音シートとなす。The sound-insulating layer in the present invention means rubber such as synthetic rubber, natural rubber and recycled rubber, and binder components such as bituminous material and synthetic resin, calcium carbonate, barium sulfate, talc,
Clay, mica, crushed waste paper, defibrated fiber, glass wool,
Compounding fillers such as plastic balloons, glass balloons, silica balloons, shirasu balloons, hollow carbon spheres,
The mixture is dispersed and kneaded by a conventionally known mixing / dispersing machine such as a dissolver, a Banbury mixer, a planetary mixer, an open kneader, a vacuum kneader, etc., and then a rolling mill such as a calender roll is formed into a sound insulating sheet having a desired thickness.
【０００８】また、本発明での吸音層とは、ガラスウー
ル、麻、毛、ポリエステル繊維、ナイロン繊維、レーヨ
ン、アクリル繊維、ポリプロピレン繊維、ポリエチレン
繊維、カーボン繊維、カイノール等の有機系、無機系の
天然あるいは合成繊維が使用でき、衣類を解繊したリサ
イクルの繊維、いわゆる雑反毛も経済的に好ましく使用
できる。これらは、従来公知の製造方法が利用できる。
すなわち、繊維原料にフェノール樹脂等の熱硬化性樹
脂、あるいはポリエステル、ポリプロピレン等の熱可塑
性樹脂を混合してフリースを形成し、加熱してセミキュ
ア状態の嵩高性原反となす方法で良い。The sound absorbing layer according to the present invention is made of glass wool, hemp, wool, polyester fiber, nylon fiber, rayon, acrylic fiber, polypropylene fiber, polyethylene fiber, carbon fiber, kinol, or other organic or inorganic type. Natural or synthetic fibers can be used, and recycled fibers obtained by disintegrating clothing, so-called rags, are also preferably used economically. Conventionally known manufacturing methods can be used for these.
That is, a method may be used in which a fibrous raw material is mixed with a thermosetting resin such as a phenol resin or a thermoplastic resin such as polyester or polypropylene to form a fleece, and the fleece is heated to form a semi-cured bulky fabric.
【０００９】本発明の特徴である２層からなる吸音層
は、遮音層に接する吸音層の成形後の厚みを他の吸音層
の２倍以上とし、面重量は０．５倍以下となすことを必
須とするものであり、そのような構成にすることにより
十分な騒音対策をなしうるのである。即ち、遮音層に接
する吸音層の成形後の密度を他の吸音層の４分の１以下
にすれば、遮音層と一体化後は、遮音層に接する吸音層
内での空気の流通により振動エネルギーが遮音層に到達
しにくくなり、即ち振動エネルギーに起因する遮音層の
変形を極めて小さくすることが可能となり、十分なる騒
音対策に寄与せしめることとなる。In the sound absorbing layer consisting of two layers, which is a feature of the present invention, the thickness of the sound absorbing layer in contact with the sound insulating layer after molding is not less than twice that of the other sound absorbing layers and the surface weight is not more than 0.5 times. Is essential, and sufficient noise countermeasures can be taken with such a configuration. That is, if the density of the sound absorbing layer in contact with the sound insulating layer is less than one fourth of that of the other sound absorbing layer, it will be vibrated by the air flow in the sound absorbing layer in contact with the sound insulating layer after being integrated with the sound insulating layer. It becomes difficult for energy to reach the sound insulation layer, that is, the deformation of the sound insulation layer due to the vibration energy can be made extremely small, which contributes to sufficient noise countermeasures.
【００１０】具体的には、遮音層に接する吸音層の成形
後の厚みを５〜４０ｍｍ、面重量を２００〜１０００ｇ
／ｍ2 とし、他の吸音層の成形後の厚みを０.５〜５ｍ
ｍ、面重量を４００〜２０００ｇ／ｍ2 とすることが好
ましい。Specifically, the sound absorbing layer in contact with the sound insulating layer has a thickness after molding of 5 to 40 mm and a surface weight of 200 to 1000 g.
/ M 2 and the thickness of other sound absorbing layers after molding is 0.5 to 5 m
m, and the surface weight is preferably 400 to 2000 g / m 2 .
【００１１】また、２層の吸音層の面密度を異ならせる
手法としては、繊維原料の絶対量を調整することによ
り、またはフリースとなすにあたって混合する熱硬化性
樹脂及び熱可塑性樹脂の配合量を２層の吸音層で異なら
せることが例示できる。即ち、吸音層のうち遮音層に接
する吸音層の繊維料を他の吸音層より少なくし、または
結合剤成分を他の吸音層の結合剤成分より少なくして、
空気の流動性により優れた吸音層とせしめることが可能
である。Further, as a method for making the surface densities of the two sound absorbing layers different, the amount of the thermosetting resin and the thermoplastic resin to be mixed in the fleece is adjusted by adjusting the absolute amount of the fiber raw material. It can be illustrated that the two sound absorbing layers are made different. That is, in the sound absorbing layer, the sound absorbing layer in contact with the sound insulating layer has less fiber material than the other sound absorbing layers, or the binder component is less than the binder components of the other sound absorbing layers,
It is possible to make the sound absorbing layer excellent due to the fluidity of air.
【００１２】その場合、吸音層のうち遮音層に接する吸
音層の結合剤成分混合量を１〜２０重量％とし、他の吸
音層の結合剤成分混合量を５〜４０重量％とすることが
好ましく、各々の吸音層の空気流れ抵抗は、１〜１０dy
ne・sec/cm3、３〜５０００dyne・sec/cm3となすことが好
ましい。In this case, the amount of the binder component mixed in the sound absorbing layer of the sound absorbing layer which is in contact with the sound insulating layer is 1 to 20% by weight, and the amount of the binder component mixed in the other sound absorbing layers is 5 to 40% by weight. Preferably, the air flow resistance of each sound absorbing layer is 1 to 10 dy
Ne · sec / cm 3 , preferably 3 to 5000 dyne · sec / cm 3 .
【００１３】更に、本発明においては、吸音層と遮音層
間に空気の流動が可能な連続気泡の発泡層を設けても良
く、発泡層を設ける方法としては、吸音層もしくは遮音
層の片面に発泡剤を塗布、散布、含浸し、オーブン中で
発泡後一体化する方法により、もしくは遮音層に成形発
泡材を貼付し、連続気泡の発泡層を形成してもよい。Further, in the present invention, a foam layer of open cells capable of air flow may be provided between the sound absorbing layer and the sound insulating layer. As a method of providing the foam layer, foaming is performed on one surface of the sound absorbing layer or the sound insulating layer. You may form the foam layer of an open cell by the method of apply | coating, spraying, and impregnating an agent, foaming in an oven, and integrating after that, or adhering a molding foam material to a sound-insulating layer.
【００１４】[0014]
【実施例】本発明の理解に供するため、以下に実施例を
記載する。いうまでもなく、本発明は以下の実施例に限
定されるものではない。EXAMPLES In order to understand the present invention, examples will be described below. Needless to say, the present invention is not limited to the examples below.
【００１５】[0015]
【実施例１】綿２５重量％、麻２０重量％、ポリエステ
ル系繊維２５重量％及びアクリル系繊維２０重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、裁断して面重量が２００ｇ／ｍ2 の
吸音層の原反１を製造した。該原反１を２００℃に加熱
した下金型上に載置して上金型を降下せしめ、３０ton
／ｍ2の圧力にて１分間、加熱加圧成形し、５〜３０ｍ
ｍ厚みの原反１の成形物１を作成した。同様の混合繊維
原料８０重量％に対して、フェノール樹脂２０重量％を
混合してフリースと成したあと加熱してセミキュア状態
とし、裁断して面重量が２０００ｇ／ｍ2の吸音層の原
反２を製造した。該原反２を２００℃に加熱した下金型
上に載置して上金型を降下せしめ、３０ton／ｍ2の圧力
にて１分間、加熱加圧成形し、３〜５ｍｍ厚みの原反２
の成形物２を作成した。ブチルゴム３５重量部、ブロン
アスファルト５重量部、炭酸カルシウム５５重量部及び
タルク５重量部を混練し、３ｍｍ厚に押出し成形し、遮
音層となした。該遮音層を１００℃で１分間プレヒート
した後、５℃に冷却した下金型上に載置後真空成形し
た。遮音層の真空成形物の上にアクリル系接着剤を介し
て上記成形物１及び成形物２をこの順序で載置して上金
型を降下せしめ、５０ton／ｍ2の圧力で３０秒間加圧成
形し、高性能遮音材１を得た。Example 1 Fleece was prepared by mixing 10% by weight of phenol resin with 90% by weight of a mixed fiber raw material consisting of 25% by weight of cotton, 20% by weight of hemp, 25% by weight of polyester fiber and 20% by weight of acrylic fiber. After that, it was heated to a semi-cure state and cut to produce a sound absorbing layer original fabric 1 having a surface weight of 200 g / m 2 . Place the original fabric 1 on the lower mold heated to 200 ° C. and lower the upper mold to 30 tons.
5 to 30 m under heat and pressure molding for 1 minute at a pressure of / m 2
A molded product 1 having a thickness of 1 m was prepared. Similar to 80% by weight of the mixed fiber raw material, 20% by weight of a phenol resin was mixed to form a fleece, which was then heated to a semi-cure state, and cut into a sound absorbing layer having a surface weight of 2000 g / m 2 2 Was manufactured. The original fabric 2 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to form a 3 to 5 mm thick original fabric. Two
Molded product 2 of was prepared. 35 parts by weight of butyl rubber, 5 parts by weight of blown asphalt, 55 parts by weight of calcium carbonate and 5 parts by weight of talc were kneaded and extruded to a thickness of 3 mm to form a sound insulating layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The above-mentioned molded product 1 and molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an acrylic adhesive, and the upper mold is lowered, and a pressure of 50 ton / m 2 is applied for 30 seconds. Molded to obtain a high performance sound insulation material 1.
【００１６】[0016]
【実施例２】綿２５重量％、麻２５重量％、ポリエステ
ル系繊維３０重量％及びアクリル系繊維２０重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、適当な大きさに裁断して面重量が５
００ｇ／ｍ2 の吸音層の原反１を製造した。該原反１を
２００℃に加熱した下金型上に載置して上金型を降下せ
しめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、５〜３０ｍｍ厚みの原反１の成形物１を作成した。
同様の混合繊維原料８０重量％に対して、フェノール樹
脂２０重量％を混合してフリースと成したあと加熱して
セミキュア状態とし、適当な大きさに裁断して面重量が
１５００ｇ／ｍ2 の吸音層の原反２を製造した。該原反
２を２００℃に加熱した下金型上に載置して上金型を降
下せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成
形し、２〜４ｍｍ厚みの原反２の成形物２を作成した。
ブチルゴム３５重量部、ブロンアスファルト５重量部、
炭酸カルシウム５５重量部及びタルク５重量部を混練
し、３ｍｍ厚に押出し成形し、遮音層となした。該遮音
層を１００℃で１分間プレヒートした後、５℃に冷却し
た下金型上に載置後真空成形した。遮音層の真空成形物
の上に接着剤を介して上記成形物１及び成形物２をこの
順序で載置して上金型を降下せしめ、５０ton／ｍ2の圧
力で３０秒間加圧成形し、高性能遮音材２を得た。Example 2 Fleece was prepared by mixing 10% by weight of phenol resin with 90% by weight of a mixed fiber raw material consisting of 25% by weight of cotton, 25% by weight of hemp, 30% by weight of polyester fiber and 20% by weight of acrylic fiber. After that, heat it to a semi-cure state and cut it to an appropriate size to give a surface weight of 5
A raw material 1 having a sound absorbing layer of 00 g / m 2 was produced. The original fabric 1 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to prepare a 5 to 30 mm thick original fabric. A molded product 1 of No. 1 was prepared.
Similar to 80% by weight of mixed fiber raw material, 20% by weight of phenolic resin was mixed to form a fleece, which was then heated to a semi-cure state and cut into an appropriate size to absorb sound with a surface weight of 1500 g / m 2 . Layer 2 was produced. The original fabric 2 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to obtain a raw fabric having a thickness of 2 to 4 mm. A molded product 2 of 2 was prepared.
35 parts by weight of butyl rubber, 5 parts by weight of blown asphalt,
55 parts by weight of calcium carbonate and 5 parts by weight of talc were kneaded and extruded to a thickness of 3 mm to form a sound insulating layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The molded product 1 and the molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an adhesive, the upper mold is lowered, and pressure molding is performed at a pressure of 50 ton / m 2 for 30 seconds. The high performance sound insulation material 2 was obtained.
【００１７】[0017]
【実施例３】綿２５重量％、麻２０重量％、ポリエステ
ル系繊維３０重量％及びアクリル系繊維２５重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、適当な大きさに裁断して面重量が６
００ｇ／ｍ2 の吸音層の原反１を製造した。該原反１を
２００℃に加熱した下金型上に載置して上金型を降下せ
しめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、５〜３０ｍｍ厚みの原反１の成形物１を作成した。
同様の混合繊維原料８０重量％に対して、フェノール樹
脂２０重量％を混合してフリースと成したあと加熱して
セミキュア状態とし、適当な大きさに裁断して面重量が
１２００ｇ／ｍ2 の吸音層の原反２を製造した。該原反
２を２００℃に加熱した下金型上に載置して上金型を降
下せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成
形し、２〜４ｍｍ厚みの原反２の成形物２を作成した。
ブチルゴム３５重量部、ブロンアスファルト５重量部、
炭酸カルシウム５５重量部及びタルク５重量部を混練
し、３ｍｍ厚に押出し成形し、遮音層となした。該遮音
層を１００℃で１分間プレヒートした後、５℃に冷却し
た下金型上に載置後真空成形した。遮音層の真空成形物
の上に接着剤を介して上記成形物１及び成形物２をこの
順序で載置して上金型を降下せしめ、５０ton／ｍ2の圧
力で３０秒間加圧成形し、高性能遮音材３を得た。Example 3 Fleece was prepared by mixing 10% by weight of phenol resin with 90% by weight of a mixed fiber raw material consisting of 25% by weight of cotton, 20% by weight of hemp, 30% by weight of polyester fiber and 25% by weight of acrylic fiber. After that, it is heated to a semi-cure state and cut into an appropriate size to give a surface weight of 6
A raw material 1 having a sound absorbing layer of 00 g / m 2 was produced. The original fabric 1 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to prepare a 5 to 30 mm thick original fabric. A molded product 1 of No. 1 was prepared.
Similar to 80% by weight of mixed fiber raw material, 20% by weight of phenol resin was mixed to form a fleece, which was then heated to a semi-cure state and cut into an appropriate size to absorb sound with a surface weight of 1200 g / m 2 . Layer 2 was produced. The original fabric 2 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to obtain a raw fabric having a thickness of 2 to 4 mm. A molded product 2 of 2 was prepared.
35 parts by weight of butyl rubber, 5 parts by weight of blown asphalt,
55 parts by weight of calcium carbonate and 5 parts by weight of talc were kneaded and extruded to a thickness of 3 mm to form a sound insulating layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The molded product 1 and the molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an adhesive, the upper mold is lowered, and pressure molding is performed at a pressure of 50 ton / m 2 for 30 seconds. , High performance sound insulation material 3 was obtained.
【００１８】[0018]
【実施例４】綿３０重量％、麻２０重量％、ポリエステ
ル系繊維３０重量％及びアクリル系繊維２０重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、適当な大きさに裁断して面重量が８
００ｇ／ｍ2 の吸音層の原反１を製造した。該原反１を
２００℃に加熱した下金型上に載置して上金型を降下せ
しめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、５〜３０ｍｍ厚みの原反１の成形物１を作成した。
同様の混合繊維原料８０重量％に対して、フェノール樹
脂２０重量％を混合してフリースと成したあと加熱して
セミキュア状態とし、適当な大きさに裁断して面重量が
１６００ｇ／ｍ2 の吸音層の原反２を製造した。該原反
２を２００℃に加熱した下金型上に載置して上金型を降
下せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成
形し、２〜４ｍｍ厚みの原反２の成形物２を作成した。
ブチルゴム３０重量部、ブロンアスファルト５重量部、
炭酸カルシウム６０重量部及びタルク５重量部を混練
し、３ｍｍ厚に押出し成形し、遮音層となした。該遮音
層を１００℃で１分間プレヒートした後、５℃に冷却し
た下金型上に載置後真空成形した。遮音層の真空成形物
の上に接着剤を介して上記成形物１及び成形物２をこの
順序で載置して上金型を降下せしめ、５０ton／ｍ2の圧
力で３０秒間加圧成形し、高性能遮音材４を得た。Example 4 Fleece was prepared by mixing 10% by weight of phenol resin with 90% by weight of a mixed fiber raw material consisting of 30% by weight of cotton, 20% by weight of hemp, 30% by weight of polyester fiber and 20% by weight of acrylic fiber. After that, heat it to a semi-cure state and cut it to an appropriate size to reduce the surface weight to 8
A raw material 1 having a sound absorbing layer of 00 g / m 2 was produced. The original fabric 1 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to prepare a 5 to 30 mm thick original fabric. A molded product 1 of No. 1 was prepared.
Similar to 80% by weight of mixed fiber raw material, 20% by weight of phenol resin was mixed to form a fleece, which was then heated to a semi-cure state and cut into an appropriate size to absorb a surface weight of 1600 g / m 2 . Layer 2 was produced. The original fabric 2 is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to obtain a raw fabric having a thickness of 2 to 4 mm. A molded product 2 of 2 was prepared.
30 parts by weight of butyl rubber, 5 parts by weight of blown asphalt,
60 parts by weight of calcium carbonate and 5 parts by weight of talc were kneaded and extruded to a thickness of 3 mm to form a sound insulating layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The molded product 1 and the molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an adhesive, the upper mold is lowered, and pressure molding is performed at a pressure of 50 ton / m 2 for 30 seconds. The high performance sound insulation material 4 was obtained.
【００１９】[0019]
【比較例１】綿３０重量％、麻２０重量％、ポリエステ
ル系繊維３０重量％及びアクリル系繊維２０重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、適当な大きさに裁断して面重量が１
０００ｇ／ｍ2 の吸音層の原反１を製造した。該原反１
を２００℃に加熱した下金型上に載置して上金型を降下
せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、５〜３０ｍｍ厚みの原反１の成形物１を作成した。
同様の混合繊維原料８０重量％に対して、フェノール樹
脂２０重量％を混合してフリースと成したあと加熱して
セミキュア状態とし、適当な大きさに裁断して面重量が
２００ｇ／ｍ2 の吸音層の原反２を製造した。該原反２
を２００℃に加熱した下金型上に載置して上金型を降下
せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、２〜４ｍｍ厚みの原反２の成形物２を作成した。ブ
チルゴム３５重量部、ブロンアスファルト５重量部、炭
酸カルシウム５５重量部及びタルク５重量部を混練し、
３ｍｍ厚に押出し成形し、遮音層となした。該遮音層を
１００℃で１分間プレヒートした後、５℃に冷却した下
金型上に載置後真空成形した。遮音層の真空成形物の上
に接着剤を介して上記成形物１及び成形物２をこの順序
で載置して上金型を降下せしめ、５０ton／ｍ2の圧力で
３０秒間加圧成形し、遮音材５を得た。[Comparative Example 1] 10% by weight of phenol resin is mixed with 90% by weight of a mixed fiber raw material consisting of 30% by weight of cotton, 20% by weight of hemp, 30% by weight of polyester fiber and 20% by weight of acrylic fiber, and fleece is mixed. After that, it is heated to a semi-cure state and cut into an appropriate size to reduce the surface weight to 1
A raw material 1 having a sound absorbing layer of 000 g / m 2 was produced. The original 1
Is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute, and a molded product of a raw material 1 having a thickness of 5 to 30 mm Created 1.
Similar to 80% by weight of mixed fiber raw material, 20% by weight of phenol resin was mixed to form a fleece, which was then heated to a semi-cure state and cut into an appropriate size to absorb sound with a surface weight of 200 g / m 2 . Layer 2 was produced. The original 2
Was placed on a lower mold heated to 200 ° C., the upper mold was lowered, and heat and pressure molding was performed at a pressure of 30 ton / m 2 for 1 minute, and a molded product of a raw fabric 2 having a thickness of 2 to 4 mm. Created 2. Knead 35 parts by weight of butyl rubber, 5 parts by weight of blown asphalt, 55 parts by weight of calcium carbonate and 5 parts by weight of talc,
It was extruded to a thickness of 3 mm to form a sound insulation layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The molded product 1 and the molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an adhesive, the upper mold is lowered, and pressure molding is performed at a pressure of 50 ton / m 2 for 30 seconds. The sound insulation material 5 was obtained.
【００２０】[0020]
【比較例２】綿３０重量％、麻２０重量％、ポリエステ
ル系繊維３０重量％及びアクリル系繊維２０重量％から
なる混合繊維原料９０重量％に対して、フェノール樹脂
１０重量％を混合してフリースと成したあと加熱してセ
ミキュア状態とし、適当な大きさに裁断して面重量が２
０００ｇ／ｍ2 の吸音層の原反１を製造した。該原反１
を２００℃に加熱した下金型上に載置して上金型を降下
せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、５〜３０ｍｍ厚みの原反１の成形物１を作成した。
同様の混合繊維原料８０重量％に対して、フェノール樹
脂２０重量％を混合してフリースと成したあと加熱して
セミキュア状態とし、適当な大きさに裁断して面重量が
２００ｇ／ｍ2 の吸音層の原反２を製造した。該原反２
を２００℃に加熱した下金型上に載置して上金型を降下
せしめ、３０ton／ｍ2の圧力にて１分間、加熱加圧成形
し、２〜５ｍｍ厚みの原反２の成形物２を作成した。ブ
チルゴム３５重量部、ブロンアスファルト５重量部、炭
酸カルシウム５５重量部及びタルク５重量部を混練し、
３ｍｍ厚に押出し成形し、遮音層となした。該遮音層を
１００℃で１分間プレヒートした後、５℃に冷却した下
金型上に載置後真空成形した。遮音層の真空成形物の上
に接着剤を介して上記成形物１及び成形物２をこの順序
で載置して上金型を降下せしめ、５０ton／ｍ2の圧力で
３０秒間加圧成形し、遮音材６を得た。Comparative Example 2 Fleece was prepared by mixing 10% by weight of phenol resin with 90% by weight of a mixed fiber raw material consisting of 30% by weight of cotton, 20% by weight of hemp, 30% by weight of polyester fiber and 20% by weight of acrylic fiber. After that, heat it to a semi-cure state and cut it to an appropriate size to reduce the surface weight to 2
A raw material 1 having a sound absorbing layer of 000 g / m 2 was produced. The original 1
Is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute, and a molded product of a raw material 1 having a thickness of 5 to 30 mm Created 1.
Similar to 80% by weight of mixed fiber raw material, 20% by weight of phenol resin was mixed to form a fleece, which was then heated to a semi-cure state and cut into an appropriate size to absorb sound with a surface weight of 200 g / m 2 . Layer 2 was produced. The original 2
Is placed on a lower mold heated to 200 ° C., the upper mold is lowered, and heat and pressure molding is performed at a pressure of 30 ton / m 2 for 1 minute to obtain a molded product of a raw fabric 2 having a thickness of 2 to 5 mm. Created 2. Knead 35 parts by weight of butyl rubber, 5 parts by weight of blown asphalt, 55 parts by weight of calcium carbonate and 5 parts by weight of talc,
It was extruded to a thickness of 3 mm to form a sound insulation layer. The sound insulation layer was preheated at 100 ° C. for 1 minute, placed on a lower mold cooled to 5 ° C., and vacuum formed. The molded product 1 and the molded product 2 are placed in this order on the vacuum molded product of the sound insulation layer via an adhesive, the upper mold is lowered, and pressure molding is performed at a pressure of 50 ton / m 2 for 30 seconds. The sound insulation material 6 was obtained.
【００２１】[0021]
【試験方法】１００〜５０００Ｈｚの各周波数における
防音効果を測定した。試験方法は、０.８ｍｍ厚の鋼板
を約２００個の金属球（８ｍｍφ平均）をぶつけること
によって、加振させ、その際の騒音レベル（ＴＬ0）を
測定し、同様に該鋼板上に実施例及び比較例による自動
車車室内用防音材１〜６の騒音レベル（ＴＬ1）を測定
した。各周波数ごとのＴＬ0−ＴＬ1の値を以下の表１に
示した。[Test method] The soundproofing effect at each frequency of 100 to 5000 Hz was measured. The test method was to vibrate a steel plate with a thickness of 0.8 mm by hitting about 200 metal balls (8 mmφ average), measure the noise level (TL 0 ) at that time, and perform the same on the steel plate. The noise levels (TL 1 ) of the soundproofing materials 1 to 6 for vehicle interiors according to the examples and comparative examples were measured. The value of TL 0 -TL 1 for each frequency are shown in Table 1 below.
【００２２】[0022]
【試験結果】試験結果を表１に示す。表中の単位はｄＢ
である。数字が大きいほど防音効果に優れる。[Test Results] The test results are shown in Table 1. The unit in the table is dB
Is. The larger the number, the better the soundproofing effect.
【表１】 [Table 1]
【００２３】[0023]
【発明の効果】本発明になる高性能遮音材は、全周波数
領域において要求されている防音効果を満足するもので
あることが明らかになった。EFFECTS OF THE INVENTION It has been revealed that the high performance sound insulation material of the present invention satisfies the required soundproofing effect in all frequency regions.
Claims (1)
音材において、吸音層が２層からなり、該吸音層のうち
遮音層に接する吸音層の成形後の厚みを他の吸音層の２
倍以上とし、面重量は０．５倍以下としてなることを特
徴とする高性能遮音材。1. A sound insulation material in which a sound absorption layer and a sound insulation layer are integrated with each other, wherein the sound absorption layer is composed of two layers, and the thickness of the sound absorption layer in contact with the sound insulation layer is equal to that of another sound absorption layer. Two
A high performance sound insulation material characterized by being more than double and having a surface weight of 0.5 times or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28207993A JP3259256B2 (en) | 1993-10-18 | 1993-10-18 | High performance sound insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28207993A JP3259256B2 (en) | 1993-10-18 | 1993-10-18 | High performance sound insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07114386A true JPH07114386A (en) | 1995-05-02 |
| JP3259256B2 JP3259256B2 (en) | 2002-02-25 |
Family
ID=17647857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28207993A Expired - Lifetime JP3259256B2 (en) | 1993-10-18 | 1993-10-18 | High performance sound insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3259256B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318552A (en) * | 2018-05-30 | 2019-02-12 | 桑德(上海)建筑科技有限公司 | A kind of sound-absorbing carrier open cell particles polymeric plate and preparation method thereof |
-
1993
- 1993-10-18 JP JP28207993A patent/JP3259256B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109318552A (en) * | 2018-05-30 | 2019-02-12 | 桑德(上海)建筑科技有限公司 | A kind of sound-absorbing carrier open cell particles polymeric plate and preparation method thereof |
| CN109318552B (en) * | 2018-05-30 | 2021-12-28 | 桑德(上海)建筑科技有限公司 | Sound-absorbing carrier open-cell particle polymerization plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3259256B2 (en) | 2002-02-25 |
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