JP2000347670A - Laminated soundproof material and its manufacture - Google Patents
Laminated soundproof material and its manufactureInfo
- Publication number
- JP2000347670A JP2000347670A JP11161859A JP16185999A JP2000347670A JP 2000347670 A JP2000347670 A JP 2000347670A JP 11161859 A JP11161859 A JP 11161859A JP 16185999 A JP16185999 A JP 16185999A JP 2000347670 A JP2000347670 A JP 2000347670A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- fiber layer
- sound
- sheet portion
- absorbing sheet
- 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
- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000000835 fiber Substances 0.000 claims abstract description 123
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000012212 insulator Substances 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004079 fireproofing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 2
- 230000001902 propagating effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 15
- 239000004745 nonwoven fabric Substances 0.000 description 11
- 229920000728 polyester Polymers 0.000 description 9
- 238000004080 punching Methods 0.000 description 9
- 239000012943 hotmelt Substances 0.000 description 8
- 239000011358 absorbing material Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical group N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 206010011906 Death Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 102100039385 Histone deacetylase 11 Human genes 0.000 description 1
- 108700038332 Histone deacetylase 11 Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、吸音シート部およ
び遮音シート部を有する積層防音材に関し、自動車、電
車や航空機などのダッシュボードにおけるインシュレー
タとして使用可能な積層防音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated sound insulating material having a sound absorbing sheet portion and a sound insulating sheet portion, and more particularly to a laminated sound insulating material that can be used as an insulator in dashboards of automobiles, trains, aircrafts, and the like.
【０００２】[0002]
【従来の技術】ダッシュボードのインシュレータは、自
動車や電車などにおいてエンジンルームと運転室との隔
壁に設置し、エンジンルームから発生する騒音が外部へ
漏出することを阻止している。エンジンルームから発生
する騒音は、道路際や路線際の住民に対してだけでな
く、その自動車や電車を運転する者にも悪影響を与えて
いる。自動車のエンジンまたは電車のモータ部などの騒
音発生源は、従来の制振鉄板や遮音板などの防音材で囲
むだけでは遮音効果が不十分であった。2. Description of the Related Art An insulator for a dashboard is installed on a partition wall between an engine room and a driver's cab in a car or a train to prevent noise generated from the engine room from leaking to the outside. The noise generated from the engine room has an adverse effect not only on residents along the road and on the road, but also on those who drive the car or train. A noise source such as an engine of a car or a motor part of a train has been insufficient in sound insulation effect only by being surrounded by a sound insulation material such as a conventional damping iron plate or sound insulation plate.
【０００３】 従来の防音材による遮音効果を高めるた
めに、自動車や電車の一部では、ウレタンをポリ塩化ビ
ニルなどの遮音材上に注入して発泡させることにより、
ウレタンフォームの吸音材を遮音材の裏面に貼り合わせ
て使用している。ポリウレタンフォームの吸音材は、一
般に断熱材およびクッション材として優れた性能を有す
る反面、苛酷な使用環境では耐熱性および機械的性質の
点で不十分であり、特に高温雰囲気中で強度が低下しや
すい。また、ポリウレタンフォームを貼り合わせた防音
材は、通常の防音材に比べて高価でもある。[0003] In order to enhance the sound insulation effect of the conventional sound insulation material, in some automobiles and trains, urethane is injected onto a sound insulation material such as polyvinyl chloride and foamed.
Urethane foam sound-absorbing material is attached to the back of the sound-insulating material. Polyurethane foam sound-absorbing materials generally have excellent performance as heat insulators and cushioning materials, but are inadequate in heat resistance and mechanical properties in severe use environments, and their strength tends to decrease especially in high-temperature atmospheres . Further, the soundproofing material bonded with the polyurethane foam is more expensive than a normal soundproofing material.
【０００４】 コストの面では、フェノール樹脂粉末を
種々の反毛（回収再生綿）繊維ラップに散布した後に熱
処理したレジンフェルトは、吸音材として非常に安価で
ある。しかしながら、このレジンフェルトおよびポリウ
レタンフォームのいずれも、自動車を廃棄処分する際に
リサイクルが困難であるという大きな欠陥を有する。現
在では、自動車の各パーツを可能な限り再利用すること
により、廃車から発生する産業廃棄物を減らして公害発
生を防ぐことが重要視されているから、レジンフェルト
やポリウレタンフォームのようにリサイクルが困難であ
ると、自動車のパーツとして採用することは不可能であ
る。[0004] In terms of cost, resin felt which has been heat-treated after spraying phenolic resin powder on various anti-hair (recovered and regenerated cotton) fiber wraps is very inexpensive as a sound absorbing material. However, both these resin felts and polyurethane foams have the major drawback of being difficult to recycle when disposing of the vehicle. At present, it is important to reduce the amount of industrial waste generated from end-of-life vehicles and prevent pollution by reusing automobile parts as much as possible, so recycling such as resin felt and polyurethane foam is important. If it is difficult, it is impossible to adopt it as a car part.
【０００５】[0005]
【発明が解決しようとする課題】本出願人は、既に、リ
サイクルが可能な吸音材として繊維マットを提案してい
る。この繊維マットは、通常の繊維を比較的少量の熱融
着性繊維と混綿・積層したラップを用い、所望に応じて
適宜にニードルパンチングを施してから、このラップを
熱処理して熱融着性繊維を溶融することで製造する。こ
の繊維マットは、吸音材としてポリウレタンフォームよ
りも安価である。The present applicant has already proposed a fiber mat as a recyclable sound absorbing material. This fiber mat uses a wrap obtained by mixing and laminating ordinary fibers with a relatively small amount of heat-fusible fibers, and appropriately performing needle punching as desired. Manufactured by melting fibers. This fiber mat is less expensive than polyurethane foam as a sound absorbing material.
【０００６】 この繊維マットは、吸音材として遮音材
とともに自動車に取り付けると種々の利点を有するけれ
ども、防火性の点では唯一十分でない。一般に、自動車
では、交通事故によってエンジンルームから出火した場
合に、火災が運転席まで拡がることを防ぐことが安全性
確保のために必要であり、繊維マットではこの火災を完
全に防止することが困難であった。Although this fiber mat has various advantages when attached to an automobile as a sound absorbing material together with a sound insulating material, it is not only sufficient in terms of fire protection. In general, it is necessary to prevent the spread of a fire to the driver's seat when a car accidentally ignites from the engine room due to a traffic accident, and it is difficult for fiber mats to completely prevent this fire. Met.
【０００７】 本発明は、従来の防音材に関する前記の
問題点つまりリサイクル性、製造コストおよび防火性の
点を改善するために提案されたものである。本発明は、
耐炎化繊維を含む吸音シート部および遮音シート部を有
し、自動車や電車などに用いる積層防音材とその製造法
を提供することを目的としている。本発明の他の目的
は、自動車や航空機などにおけるダッシュボードインシ
ュレータとして利用可能な積層防音材の製造法を提供す
ることである。The present invention has been proposed in order to improve the above-mentioned problems related to the conventional soundproofing materials, that is, recyclability, manufacturing cost, and fireproofing. The present invention
It is an object of the present invention to provide a laminated soundproofing material having a sound absorbing sheet portion and a sound insulating sheet portion containing flame-resistant fibers and used for automobiles and trains, and a method for producing the same. Another object of the present invention is to provide a method of manufacturing a laminated soundproof material that can be used as a dashboard insulator in an automobile or an aircraft.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る積層防音材は、吸音シート部と厚さ２
〜１０ｍｍの遮音シート部とを相互に貼り合わせる。こ
の吸音シート部は、不燃性繊維層１０〜９０％および通
常繊維層９０〜１０％からなる一体化した２層の繊維集
合構造を有する。また、この不燃性繊維層は、耐炎化繊
維２０〜１００重量％と一般の有機繊維８０〜０重量％
とを混綿して形成する。例えば、遮音シート部として、
ポリ塩化ビニル、エチレン−酢酸ビニル共重合体、板ゴ
ム、ビチューメンなどが使用可能である。In order to achieve the above object, a laminated soundproofing material according to the present invention comprises a sound absorbing sheet portion and a thickness of 2 mm.
A sound insulation sheet of 10 mm to 10 mm is stuck together. This sound absorbing sheet portion has an integrated two-layer fiber assembly structure composed of 10 to 90% of a non-combustible fiber layer and 90 to 10% of a normal fiber layer. The non-combustible fiber layer comprises 20 to 100% by weight of oxidized fiber and 80 to 0% by weight of general organic fiber.
Is formed by blending For example, as a sound insulation sheet part,
Polyvinyl chloride, ethylene-vinyl acetate copolymer, plate rubber, bitumen and the like can be used.
【０００９】 積層防音材を製造するには、耐炎化繊維
２０〜１００重量％と有機繊維８０〜０重量％とを混綿
して不燃性繊維層を形成し、この不燃性繊維層を通常繊
維層とニードルパンチングまたは接着によって一体化す
る。この一体化によって、不燃性繊維層１０〜９０％お
よび通常繊維層９０〜１０％からなる吸音シート部を
得、この吸音シート部を厚さ２〜１０ｍｍの遮音シート
部と貼り合わせる。In order to manufacture a laminated soundproofing material, 20 to 100% by weight of oxidized fiber and 80 to 0% by weight of organic fiber are mixed to form a non-combustible fiber layer. And integrated by needle punching or bonding. By this integration, a sound absorbing sheet portion composed of 10 to 90% of the noncombustible fiber layer and 90 to 10% of the normal fiber layer is obtained, and this sound absorbing sheet portion is bonded to a sound insulating sheet portion having a thickness of 2 to 10 mm.
【００１０】 また、ダッシュボードインシュレータを
製造するには、前記の吸音シート部と厚さ２〜１０ｍｍ
の遮音シート部とを接着剤を介して貼り合わせる。得た
積層防音材を温度約１８０〜２４０℃で３０〜１８０秒
間加熱してから直ちに冷間プレスによって成形し、さら
に適宜にトリミングする。あるいは、温度約１８０〜２
４０℃に加熱された吸音シート部を、温度約１８０〜２
４０℃で３０〜１８０秒間加熱成形された遮音シート部
に接着剤を介して貼り合わせた後、直ちに冷間プレスに
よって成形し、さらに適宜にトリミングする。In order to manufacture a dashboard insulator, the above-mentioned sound absorbing sheet portion and a thickness of 2 to 10 mm are required.
And the sound insulation sheet part of the above is bonded with an adhesive. The obtained laminated sound insulating material is heated at a temperature of about 180 to 240 ° C. for 30 to 180 seconds, immediately molded by a cold press, and further appropriately trimmed. Alternatively, a temperature of about 180-2
The sound absorbing sheet part heated to 40 ° C. is heated to a temperature of about 180 to 2
Immediately after bonding with an adhesive to a sound insulation sheet portion which is heat-formed at 40 ° C. for 30 to 180 seconds, it is formed by a cold press, and further appropriately trimmed.
【００１１】[0011]
【発明の実施の形態】本発明の積層防音材１は、図１に
示すように、吸音シート部２と厚さ２〜１０ｍｍの遮音
シート部３とを相互に貼り合わせて製造する。吸音シー
ト部２である繊維マットまたは不織布と遮音シート部３
である板材との貼り合わせは、両者の間に接着剤を介し
て加熱接着し、該接着剤を例えば塗布したり、ホットメ
ルト不織布やフィルムなどの熱融着シートを介在させ
る。この接着剤は耐熱性であると好ましく、例えば、ゴ
ム系、ポリイミド、フェノール系、シリコン、変性シリ
コン、エポキシ系などを用いてもよい。BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a laminated sound insulating material 1 according to the present invention is manufactured by laminating a sound absorbing sheet portion 2 and a sound insulating sheet portion 3 having a thickness of 2 to 10 mm. Fiber mat or nonwoven fabric as the sound absorbing sheet part 2 and the sound insulating sheet part 3
For bonding to the plate material, the two are heat-bonded via an adhesive, and the adhesive is applied, for example, or a heat-sealing sheet such as a hot-melt nonwoven fabric or film is interposed. The adhesive is preferably heat-resistant, and for example, a rubber-based, polyimide, phenol-based, silicon, modified silicon, epoxy-based adhesive, or the like may be used.
【００１２】 本発明で用いる吸音シート部２は、図２
に示すように、不燃性繊維層５および通常繊維層７から
なる２層の繊維集合構造を有し、不燃性繊維層５は耐炎
化繊維２０〜１００重量％と一般の有機繊維８０〜０重
量％とを混綿して形成する。不燃性繊維層５において、
耐炎化繊維は少なくとも２０重量％を有し、耐火性を高
める場合には全量が耐炎化繊維でもよい。この際に、耐
炎化繊維が約２０重量％以下であると、防火性が所望値
よりも低下するおそれがある。不燃性繊維層５および通
常繊維層７は、不燃性繊維層５は全体を均一に混綿して
積層した繊維マットであっても、ニードルパンチングで
シート状になった不織布であってもよい。The sound absorbing sheet portion 2 used in the present invention is shown in FIG.
As shown in the figure, the non-combustible fiber layer 5 and the normal fiber layer 7 have a two-layer fiber assembly structure. % And cotton. In the non-combustible fiber layer 5,
The flame-retardant fibers have at least 20% by weight, and if fire resistance is to be increased, the total amount may be flame-retardant fibers. At this time, if the amount of the flame-resistant fiber is about 20% by weight or less, the fire resistance may be lower than a desired value. The non-combustible fiber layer 5 and the normal fiber layer 7 may be a fiber mat in which the entire non-combustible fiber layer 5 is uniformly mixed and laminated, or a nonwoven fabric formed into a sheet by needle punching.
【００１３】 不燃性繊維層５に加える耐炎化繊維は、
主としてアクリル繊維を空気などの活性雰囲気中で２０
０〜５００℃で焼成して製造する。耐炎化繊維は、炭素
繊維を製造する際の前駆体であり、黒化繊維またはカー
ボンプレオキサイドファイバとも称する。この耐炎化繊
維は、基本的にナフチリジン環の生成によるラダーポリ
マー化によって耐炎化つまり熱安定化し、繊維単独では
２００〜３００℃程度の耐熱性と耐炎性を持っている。
また、一般の有機繊維は、例えば、ポリテトラフルオロ
エチレン（ＰＴＦＥ）繊維、芳香族アラミド繊維、ポリ
フェニレンサルファイド（ＰＰＳ）繊維などの単独また
はこれらの混合繊維であり、さらに別種の有機繊維を一
部加えることも可能である。The oxidized fiber added to the non-combustible fiber layer 5 is as follows:
Mainly use acrylic fiber in an active atmosphere such as air.
It is manufactured by firing at 0 to 500 ° C. The oxidized fiber is a precursor for producing carbon fiber, and is also called a blackened fiber or a carbon preoxide fiber. The flame-resistant fiber is basically made flame-resistant, that is, heat-stabilized by ladder polymerization by the formation of a naphthyridine ring, and the fiber alone has heat resistance and flame resistance of about 200 to 300 ° C.
The general organic fiber is, for example, a polytetrafluoroethylene (PTFE) fiber, an aromatic aramid fiber, a polyphenylene sulfide (PPS) fiber, or a single fiber or a mixed fiber thereof. It is also possible.
【００１４】 通常繊維層７に加える繊維は、一般に市
販の繊維の中では比較的難燃性に属するものが好まし
い。このような繊維として、ポリエステル，ポリプロピ
レン，アクリル，ナイロンなどの合成繊維、羊毛，木綿
などの天然繊維，アセテートなどの化学繊維またはこれ
らを混綿した繊維が例示でき、一般にポリエステル繊維
が好ましい。これらの原料繊維は、一部または全部が反
毛（回収再生綿）であってもよい。The fibers added to the fiber layer 7 are preferably those generally belonging to relatively flame retardant among commercially available fibers. Examples of such fibers include synthetic fibers such as polyester, polypropylene, acrylic, and nylon; natural fibers such as wool and cotton; chemical fibers such as acetate; and fibers obtained by mixing them. In general, polyester fibers are preferable. Some or all of these raw fibers may be anti-hair (recovered and recycled cotton).
【００１５】 吸音シート部２において、不燃性繊維層
５は１０〜９０％および通常繊維層７は９０〜１０％で
あり、両者を一体化している。この際に、不燃性繊維層
５が約１０％以下であると所定の防火性を達成すること
が困難になり、不燃性繊維層５を約９０％以上含有して
も防火性が上昇しないので不経済である。繊維層５，７
を一体化するには、中間にホットメルト不織布やフィル
ムなどの熱融着シートを介在させても、有棘状ニードル
によるニードルパンチングを行っても、ウォータージェ
ット法で繊維を絡合してもよい。In the sound absorbing sheet portion 2, the non-combustible fiber layer 5 is 10 to 90% and the normal fiber layer 7 is 90 to 10%, and both are integrated. At this time, if the amount of the non-combustible fiber layer 5 is less than about 10%, it is difficult to achieve a predetermined fire-prevention property. It is uneconomical. Fiber layers 5, 7
In order to integrate the fibers, a hot-melt sheet such as a hot-melt nonwoven fabric or a film may be interposed in the middle, needle punching with a barbed needle may be performed, or fibers may be entangled by a water jet method. .
【００１６】 一方、本発明で用いる遮音シート部３と
しては、ポリ塩化ビニル（ＰＶＣ）、エチレン−酢酸ビ
ニル共重合体（ＥＶＡ）、板ゴム、ビチューメンなどが
例示できる。前記以外の樹脂シートであっても、比較的
安価で遮音効果が優れている素材ならば使用可能であ
る。遮音シート部３は、厚さが２〜１０ｍｍであり、約
２ｍｍ以下では遮音効果が小さすぎ、約１０ｍｍ以上で
は成形加工が困難なうえに不経済である。On the other hand, examples of the sound insulating sheet portion 3 used in the present invention include polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), plate rubber, bitumen, and the like. Other resin sheets can be used as long as they are relatively inexpensive and have a good sound insulation effect. The sound insulating sheet portion 3 has a thickness of 2 to 10 mm. If the thickness is about 2 mm or less, the sound insulating effect is too small. If the thickness is about 10 mm or more, molding is difficult and uneconomical.
【００１７】 図３に示すようなダッシュボードインシ
ュレータ１０を製造する場合、吸音シート部２と遮音シ
ート部３を前記のように相互に貼り合わせて積層防音材
１とした後に、約１８０〜２４０℃で３０〜１８０秒間
加熱し、直ちに冷間プレスで成形してから適宜にトリミ
ングすればよい。この際に、遮音シート部３は、その表
面に予め接着剤を塗布してから加熱し、同様に加熱した
吸音シート部２と重ね合わせ、直ちに冷間プレスにおい
て積層成形してもよい。また、吸音シート部２と遮音シ
ート部３は、個別に加熱して冷間プレスで成形した後
に、両者の間に接着剤を介在させて貼り合わせてもよ
い。When manufacturing the dashboard insulator 10 as shown in FIG. 3, after the sound absorbing sheet portion 2 and the sound insulating sheet portion 3 are bonded to each other as described above to form the laminated sound insulating material 1, the temperature is about 180 to 240 ° C. For 30 to 180 seconds, and immediately form by cold press, and then appropriately trimmed. At this time, the sound insulating sheet portion 3 may be preliminarily coated with an adhesive, heated, and then superimposed on the sound absorbing sheet portion 2 similarly heated, and immediately laminated and formed by cold pressing. The sound absorbing sheet portion 2 and the sound insulating sheet portion 3 may be individually heated and formed by a cold press, and then bonded together with an adhesive interposed therebetween.
【００１８】 本発明の積層防音材１は、吸音シート部
２の裏側に遮音シート部３を貼り合わせた２層構造であ
る。吸音シート部２は、遮音シート部３とともに積層防
音材１における遮音効果をいっそう高め、苛酷な使用環
境において防火性および機械的性質が優れている。積層
防音材１は、通常繊維層７を９０〜１０重量％含む吸音
シート部２と樹脂製などの遮音シート部３の存在によ
り、予熱後に直ちにプレスすると所望の形状に成形でき
るため、複雑の立体形状を有するダッシュボードインシ
ュレータ１０として適している。ダッシュボードインシ
ュレータ１０において、吸音シート部２は、遮音シート
部３とともにボルト孔１１（図４）の穿孔作業時にガラ
ス粉のような粉塵が発生せず、作業環境の悪化を顧慮し
なくてもよい。The laminated sound insulating material 1 of the present invention has a two-layer structure in which a sound insulating sheet 3 is attached to the back side of a sound absorbing sheet 2. The sound absorbing sheet portion 2 further enhances the sound insulating effect of the laminated soundproofing material 1 together with the sound insulating sheet portion 3, and has excellent fire protection and mechanical properties in a severe use environment. The laminated soundproofing material 1 can be formed into a desired shape when pressed immediately after preheating because of the sound absorbing sheet portion 2 which usually contains the fiber layer 7 in an amount of 90 to 10% by weight and the sound insulating sheet portion 3 made of resin or the like. It is suitable as a dashboard insulator 10 having a shape. In the dashboard insulator 10, the sound absorbing sheet portion 2 does not generate dust such as glass powder at the time of drilling the bolt holes 11 (FIG. 4) together with the sound insulating sheet portion 3 and does not need to consider the deterioration of the working environment. .
【００１９】[0019]
【実施例】次に、本発明を実施例に基づいて説明する
が、本発明は実施例に限定されるものではない。Next, the present invention will be described based on examples, but the present invention is not limited to the examples.
【００２０】実施例１ 不燃性繊維層５を製造するため、アクリル繊維を空気な
どの活性雰囲気中で２００〜３００℃で焼成した耐炎化
繊維（商品名：パイロメックス、東邦レーヨン製）５０
重量％と、２デニールのｍ−アラミド繊維（商品名：コ
ーネックス）５０重量％とを均一に混綿してウェブを得
る。このウェブを積層して１５０ｇ／ｍ ２のラップと
し、さらに針密度１００本／ｃｍ２のニードルパンチン
グによって不織布を形成する。Example 1 In order to produce the non-combustible fiber layer 5, acrylic fiber was air-dried.
Flame resistance fired at 200-300 ° C in any active atmosphere
Fiber (trade name: Pyromex, manufactured by Toho Rayon) 50
Weight% and 2-denier m-aramid fiber (trade name:
-Nex) 50% by weight to obtain a web
You. This web is laminated to 150 g / m 2With the wrap
And a needle density of 100 needles / cm2Needle pantin
To form a nonwoven fabric.
【００２１】 一方、通常繊維層７を製造するため、６
デニールのポリエステル１００％のウェブを得る。この
ウェブを積層して３５０ｇ／ｍ２のラップとし、さらに
針密度１５０本／ｃｍ２のニードルパンチングによって
不織布を形成する。On the other hand, in order to manufacture the normal fiber layer 7,
A 100% denier polyester web is obtained. The web is laminated to form a wrap of 350 g / m 2 , and a nonwoven fabric is formed by needle punching with a needle density of 150 needles / cm 2 .
【００２２】 不燃性繊維層５と通常繊維層７とは、仕
上げニードルパンチングで一体化する。この仕上げニー
ドルパンチングは、＃４０の有棘状針を用い、針密度は
８０本／ｃｍ２である。この結果、不燃性繊維層２５％
および通常繊維層７５％からなる吸音シート部２を得
る。The non-combustible fiber layer 5 and the normal fiber layer 7 are integrated by finish needle punching. This finishing needle punching uses a barbed needle of # 40, and the needle density is 80 needles / cm 2 . As a result, the non-combustible fiber layer 25%
And the sound-absorbing sheet part 2 which consists of 75% of normal fiber layers is obtained.
【００２３】 次に、吸音シート部２は、通常繊維層７
を下に向け、厚さ５ｍｍのＥＶＡ製の遮音シート部３の
上側に配置する。その中間にホットメルト不織布１２を
介在させ、１８０℃で６０秒間加熱・加圧して貼り合わ
せる。Next, the sound-absorbing sheet portion 2 is provided with the normal fiber layer 7.
Is placed on the upper side of the EVA sound insulation sheet section 3 having a thickness of 5 mm. The hot-melt nonwoven fabric 12 is interposed therebetween and heated and pressed at 180 ° C. for 60 seconds for bonding.
【００２４】 得た積層防音材１は、苛酷な使用環境に
おいて防火性および機械的性質が優れている。積層防音
材１は、厚さ１ｍｍの制振鉄板（図示しない）の上側に
ウレタン系樹脂の接着剤を塗布して貼り合わせ、新幹線
車両におけるモータ部用の防音材などとして使用でき
る。The obtained laminated soundproofing material 1 has excellent fire resistance and mechanical properties in a severe use environment. The laminated soundproofing material 1 can be used as a soundproofing material for a motor section in a Shinkansen vehicle by applying a urethane-based resin adhesive on the upper side of a vibration damping iron plate (not shown) having a thickness of 1 mm.
【００２５】実施例２ 不燃性繊維層５を製造するため、耐炎化繊維（商品名：
パイロメックス）１００％を均一に混綿してウェブを得
る。このウェブを積層し、１００ｇ／ｍ2のラップとし
てから、針密度１００本／ｃｍ２のニードルパンチング
によって不織布を形成する。一方、通常繊維層７とし
て、６デニールのポリエステル繊維７０％、４デニール
の低融点ポリエステル繊維３０％を均一に混綿してウェ
ブを得る。このウェブを積層し、２５０ｇ／ｍ２のラッ
プとして用いる。Example 2 In order to produce the non-combustible fiber layer 5, an oxidized fiber (trade name:
(Pyromex) 100% to obtain a web. After laminating the web to form a wrap of 100 g / m 2, a nonwoven fabric is formed by needle punching with a needle density of 100 needles / cm 2 . On the other hand, as the normal fiber layer 7, a web is obtained by uniformly mixing 70% of 6-denier polyester fiber and 30% of 4-denier low-melting polyester fiber. The web is laminated and used as a 250 g / m 2 wrap.
【００２６】 不燃性繊維層５と通常繊維層７とは、そ
の中間にホットメルトフィルムを介在させ、１８０℃で
２分間熱風貫通して貼り合わせる。この結果、不燃性繊
維層２８％および通常繊維層７２％からなる吸音シート
部２を得る。吸音シート部２は、通常繊維層７を下に向
け、厚さ４ｍｍのＰＶＣ製の遮音シート部３の上側に配
置する。その中間にホットメルト不織布１２を介在さ
せ、１８０℃で４５秒間加熱・加圧して貼り合わせる。The non-combustible fiber layer 5 and the normal fiber layer 7 are bonded together by interposing a hot melt film therebetween and passing through hot air at 180 ° C. for 2 minutes. As a result, the sound-absorbing sheet portion 2 including the non-combustible fiber layer 28% and the normal fiber layer 72% is obtained. The sound-absorbing sheet section 2 is arranged above the sound-insulating sheet section 3 made of PVC having a thickness of 4 mm with the fiber layer 7 usually facing downward. The hot-melt nonwoven fabric 12 is interposed therebetween and heated and pressed at 180 ° C. for 45 seconds for bonding.
【００２７】 得た積層防音材１は、苛酷な使用環境に
おいて防火性および機械的性質が特に優れている。The obtained laminated soundproofing material 1 is particularly excellent in fire resistance and mechanical properties in a severe use environment.
【００２８】実施例３ 不燃性繊維層５を製造するため、耐炎化繊維（商品名：
パイロメックス）８０重量％と、４デニールの低融点ポ
リエステル繊維２０重量％とを均一に混綿してウェブを
得る。このウェブを積層して２００ｇ／ｍ２のラップと
し、さらに針密度１００本／ｃｍ２のニードルパンチン
グによって不織布を形成する。Example 3 In order to produce the non-combustible fiber layer 5, a flame-resistant fiber (trade name:
A web is obtained by uniformly mixing 80% by weight of Pyromex) and 20% by weight of 4 denier low melting polyester fiber. The web is laminated to form a wrap of 200 g / m 2 , and a nonwoven fabric is formed by needle punching with a needle density of 100 needles / cm 2 .
【００２９】 一方、通常繊維層７を製造するため、６
デニールのポリエステル繊維４５重量％と、４デニール
の低融点ポリエステル繊維２５重量％、ポリエステル系
反毛繊維３０重量％とを均一に混綿してウェブを得る。
このウェブを積層し、２００ｇ／ｍ２のラップとして用
いる。On the other hand, in order to manufacture the normal fiber layer 7,
A web is obtained by uniformly mixing 45% by weight of a denier polyester fiber, 25% by weight of a 4 denier low-melting polyester fiber, and 30% by weight of a polyester-based wool fiber.
The web is laminated and used as a 200 g / m 2 wrap.
【００３０】 不燃性繊維層５と通常繊維層７とは、そ
の中間にホットメルトフィルムを介在させ、１８０℃で
２分間熱風貫通して貼り合わせる。この結果、不燃性繊
維層４０％および通常繊維層６０％からなる吸音シート
部２を得る。吸音シート部２は、通常繊維層７を下に向
け、厚さ５ｍｍのＥＶＡ製の遮音シート部３の上側に配
置する。その中間にホットメルト不織布１２を介在さ
せ、２３０℃で９０秒間加熱・加圧して貼り合わせる。The non-combustible fiber layer 5 and the normal fiber layer 7 are bonded to each other with a hot melt film interposed therebetween at a temperature of 180 ° C. for 2 minutes through hot air. As a result, a sound-absorbing sheet portion 2 composed of 40% of the non-combustible fiber layer and 60% of the normal fiber layer is obtained. The sound-absorbing sheet section 2 is disposed above the sound-insulating sheet section 3 made of EVA having a thickness of 5 mm with the fiber layer 7 usually facing downward. The hot-melt nonwoven fabric 12 is interposed in the middle and heated and pressed at 230 ° C. for 90 seconds for bonding.
【００３１】実施例４ ダッシュボードインシュレータ１０を製造するため、実
施例１で得た積層防音材１を、２２０℃で５０秒間加熱
した後に、ダッシュボード用の冷金型中でプレスによっ
て成形し、さらに適宜にトリミングする。Example 4 In order to manufacture the dashboard insulator 10, the laminated soundproofing material 1 obtained in Example 1 was heated at 220 ° C. for 50 seconds, and then formed by pressing in a cold mold for a dashboard. Further, trimming is appropriately performed.
【００３２】 得たダッシュボードインシュレータ１０
には、複数個のボルト孔１１を穿孔する。ダッシュボー
ドインシュレータ１０は、自動車のダッシュボード内に
応じた立体形状に成形し、ダッシュボードの内側にボル
ト止めする。ダッシュボードインシュレータ１０は、エ
ンジンルームから出火した際に火災が運転席まで拡がる
ことを阻止するという防火性を有し、しかも自動車のエ
ンジン音に対する遮音効果が高く、緩衝材としての効果
も有する。The obtained dashboard insulator 10
, A plurality of bolt holes 11 are drilled. The dashboard insulator 10 is formed into a three-dimensional shape corresponding to the inside of a dashboard of an automobile, and is bolted to the inside of the dashboard. The dashboard insulator 10 has a fireproof property of preventing a fire from spreading to a driver's seat when a fire starts from the engine room, and has a high sound insulation effect against the engine sound of an automobile and also has an effect as a cushioning material.
【００３３】実施例５ ダッシュボードインシュレータ１０を製造するため、実
施例２で得た吸音シート部２を２００℃で６０秒間加熱
し、ダッシュボード用の冷金型中でプレスによって成形
する。一方、実施例１で得た遮音シート部３を１８０℃
で７０秒間加熱し、ダッシュボード用の冷金型中でプレ
スによって成形する。成形した遮音シート部３にゴム系
接着剤を塗布し、ついで成形した吸音シート部２と貼り
合わせ、さらに適宜にトリミングする。Example 5 In order to manufacture the dashboard insulator 10, the sound absorbing sheet portion 2 obtained in Example 2 is heated at 200 ° C. for 60 seconds, and is formed by pressing in a cold mold for a dashboard. On the other hand, the sound insulation sheet portion 3 obtained in Example 1 was heated at 180 ° C.
For 70 seconds, and molded by pressing in a cold mold for a dashboard. A rubber-based adhesive is applied to the formed sound-insulating sheet portion 3, then bonded to the formed sound-absorbing sheet portion 2, and further appropriately trimmed.
【００３４】 得たダッシュボードインシュレータ１０
には、複数個のボルト孔１１を穿孔し、ボルトによって
ダッシュボードに取り付ける。ダッシュボードインシュ
レータ１０は、高い防火性を有し、自動車のエンジン音
についての遮音効果も高い。The obtained dashboard insulator 10
, A plurality of bolt holes 11 are drilled and attached to the dashboard with bolts. The dashboard insulator 10 has high fire protection, and also has a high sound insulation effect on the engine sound of a vehicle.
【００３５】実施例６ ダッシュボードインシュレータ１０を製造するため、実
施例２で製造した吸音シート部２を用いる。吸音シート
部２をＰＶＣ製の遮音シート部３（厚さ３ｍｍ）の上側
に配置し、該遮音シート部には予めゴム系接着剤を塗布
しておく。吸音シート部２を２００℃で６０秒間加熱
し、且つ遮音シート部３を２２０℃で６０秒間加熱して
から重ね合わせ、ダッシュボード用の冷金型中でプレス
によって積層成形し、さらに適宜にトリミングする。Embodiment 6 In order to manufacture the dashboard insulator 10, the sound absorbing sheet portion 2 manufactured in Embodiment 2 is used. The sound absorbing sheet portion 2 is arranged above the sound insulating sheet portion 3 (thickness: 3 mm) made of PVC, and a rubber adhesive is applied to the sound insulating sheet portion in advance. The sound absorbing sheet portion 2 is heated at 200 ° C. for 60 seconds, and the sound insulating sheet portion 3 is heated at 220 ° C. for 60 seconds, and then superposed, laminated and formed by pressing in a cold mold for a dashboard, and further appropriately trimmed. I do.
【００３６】 得たダッシュボードインシュレータ１０
には、複数個のボルト孔１１を穿孔し、ボルトによって
ダッシュボードに取り付ける。ダッシュボードインシュ
レータ１０は、いっそう高い防火性を有し、且つ自動車
のエンジン音についての遮音効果をいっそう高める。The obtained dashboard insulator 10
, A plurality of bolt holes 11 are drilled and attached to the dashboard with bolts. The dashboard insulator 10 has higher fire protection and further enhances the sound insulation effect of the vehicle engine sound.
【００３７】[0037]
【発明の効果】本発明に係る積層防音材は、比較的安価
なうえに、防火性を有する吸音シート部および遮音シー
ト部の存在により、交通事故でエンジンルームから出火
した際に火災が運転席まで拡がることを防ぎ、しかも遮
音効果およびクッション材としての性能も優れている。
本発明の積層防音材をダッシュボードインシュレータと
して使用すると、自動車などを廃棄処分する際にリサイ
クル可能であり、廃車から発生する産業廃棄物を減らし
て公害発生を防止できる。The laminated soundproofing material according to the present invention is relatively inexpensive and, due to the presence of a sound absorbing sheet portion and a sound insulating sheet portion having fireproofing properties, when a fire occurs from an engine room in a traffic accident, a fire may occur in the driver's seat. It also prevents sound from spreading to the outside, and has excellent sound insulation and cushioning performance.
When the laminated soundproofing material of the present invention is used as a dashboard insulator, it can be recycled when disposing of a car or the like, and can reduce industrial waste generated from a scrapped car to prevent pollution.
【００３８】 本発明で用いる吸音シート部は、高温雰
囲気中で発火や引火を起こさず、機械的強度も低下しな
いから、自動車や電車のダッシュボードなどの苛酷な環
境において使用可能である。この吸音シート部は、その
厚さに比べて軽く、多量に使用しても積層防音材の全体
重量を増加させることが少ない。The sound-absorbing sheet portion used in the present invention does not ignite or ignite in a high-temperature atmosphere and does not lower its mechanical strength, so that it can be used in harsh environments such as dashboards of automobiles and trains. This sound absorbing sheet portion is lighter in thickness than the thickness thereof, and does not increase the overall weight of the laminated sound insulating material even when used in large amounts.
【００３９】 本発明の積層防音材は、冷間プレスによ
って所望の立体形状に成形できる。この積層防音材は、
ダッシュボードインシュレータとして自動車内部や電車
内部などの狭い設置個所に適した形状に加工でき、比較
的容易に施工することができる。The laminated soundproofing material of the present invention can be formed into a desired three-dimensional shape by cold pressing. This laminated sound insulation material
As a dashboard insulator, it can be processed into a shape suitable for narrow installation locations such as inside a car or train, and can be constructed relatively easily.
【図１】 本発明に係る積層防音材を拡大して示す部分
断面図である。FIG. 1 is an enlarged partial sectional view of a laminated soundproofing material according to the present invention.
【図２】 本発明で用いる吸音シート部を示す部分断面
図である。FIG. 2 is a partial cross-sectional view showing a sound absorbing sheet portion used in the present invention.
【図３】 ダッシュボードインシュレータの一例を示す
部分断面図である。FIG. 3 is a partial cross-sectional view illustrating an example of a dashboard insulator.
【図４】 図３のダッシュボードインシュレータの平面
図である。FIG. 4 is a plan view of the dashboard insulator of FIG. 3;
１ 積層防音材 ２ 吸音シート部 ３ 遮音シート部 ５ 不燃性繊維層 ７ 通常繊維層 １０ ダッシュボードインシュレータ DESCRIPTION OF SYMBOLS 1 Laminated sound insulation material 2 Sound absorption sheet part 3 Sound insulation sheet part 5 Non-combustible fiber layer 7 Normal fiber layer 10 Dashboard insulator
フロントページの続き Ｆターム(参考） 2E001 DE01 DF02 DF04 FA00 GA12 GA23 GA24 GA28 GA29 HD11 HD13 HE01 JC06 JD04 JD05 JD06 LA04 3D003 AA04 AA06 AA07 AA10 BB01 CA05 DA24 3D023 BA01 BA02 BA03 BB17 BC01 BD12 BE04 BE06 BE31 4F100 AH00A AK25A AK41B AK47A AK68C BA04 BA07 BA10A BA10C DG01A DG01B DG06A DG06B DG15A DG15B DG15D DG18A EC09 EC09A EC18 EC182 EJ202 EJ422 EJ48A EJ993 GB31 GB33 JH01 JH01A JH01B JH01C JJ07 JJ07A JL12D JL16 5D061 AA02 AA04 AA22 BB17 BB21 BB37 DD02 DD06 Continued on the front page F-term (reference) 2E001 DE01 DF02 DF04 FA00 GA12 GA23 GA24 GA28 GA29 HD11 HD13 HE01 JC06 JD04 JD05 JD06 LA04 3D003 AA04 AA06 AA07 AA10 BB01 CA05 DA24 3D023 BA01 BA02 BA03 BB17 BC01 BD12 BE04A06 BE06 ABE BEA BEH AK68C BA04 BA07 BA10A BA10C DG01A DG01B DG06A DG06B DG15A DG15B DG15D DG18A EC09 EC09A EC18 EC182 EJ202 EJ422 EJ48A EJ993 GB31 GB33 JH01 JH01A JH01B JH01C JJ07 AJB12 A12JB12 AB12 AB12 JB12 AB12 A12 A
Claims (3)
０％および通常繊維層９０〜１０％からなる一体化した
２層の繊維集合構造を有し、この不燃性繊維層は耐炎化
繊維２０〜１００重量％と一般の有機繊維８０〜０重量
％とを混綿して形成し、この吸音シート部と厚さ２〜１
０ｍｍの遮音シート部とを相互に貼り合わせる積層防音
材。1. The sound-absorbing sheet portion includes non-combustible fiber layers 10 to 9
It has an integrated two-layer fiber assembly structure of 0% and a normal fiber layer of 90 to 10%, and the non-combustible fiber layer contains 20 to 100% by weight of oxidized fiber and 80 to 0% by weight of general organic fiber. And a sound absorbing sheet portion and a thickness of 2 to 1
A laminated soundproofing material that attaches the 0mm soundproof sheet to each other.
有機繊維８０〜０重量％とを混綿して不燃性繊維層を形
成し、この不燃性繊維層を通常繊維層とニードルパンチ
ングまたは接着によって一体化することにより、不燃性
繊維層１０〜９０％および通常繊維層９０〜１０％から
なる吸音シート部を得、この吸音シート部と厚さ２〜１
０ｍｍの遮音シート部とを接着剤を介して相互に貼り合
わせる積層防音材の製造法。2. A non-combustible fiber layer is formed by mixing 20 to 100% by weight of oxidized fiber and 80 to 0% by weight of general organic fiber, and this non-combustible fiber layer is needle-punched or bonded to a normal fiber layer. To obtain a sound-absorbing sheet portion composed of 10 to 90% of a non-combustible fiber layer and 90 to 10% of a normal fiber layer.
A method for producing a laminated sound insulating material in which a 0 mm sound insulating sheet portion is bonded to each other via an adhesive.
有機繊維８０〜０重量％とを混綿して不燃性繊維層を形
成し、この不燃性繊維層を通常繊維層と一体化すること
により、不燃性繊維層１０〜９０％および通常繊維層９
０〜１０％からなる吸音シート部を得、この吸音シート
部と厚さ２〜１０ｍｍの遮音シート部とを接着剤を介し
て相互に貼り合わせ、得た積層防音材を温度約１８０〜
２４０℃で３０〜１８０秒間加熱してから直ちに冷間プ
レスによって成形し、さらに適宜にトリミングするダッ
シュボードインシュレータの製造法。3. A non-combustible fiber layer is formed by mixing 20 to 100% by weight of oxidized fiber and 80 to 0% by weight of general organic fiber, and the non-combustible fiber layer is integrated with a normal fiber layer. 10 to 90% of the non-combustible fiber layer and the normal fiber layer 9
A sound absorbing sheet portion of 0 to 10% is obtained, and the sound absorbing sheet portion and a sound insulating sheet portion having a thickness of 2 to 10 mm are bonded to each other via an adhesive.
A method for manufacturing a dashboard insulator, which is heated at 240 ° C. for 30 to 180 seconds, immediately molded by a cold press, and then trimmed appropriately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16185999A JP4237874B2 (en) | 1999-06-09 | 1999-06-09 | Laminated soundproof material and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16185999A JP4237874B2 (en) | 1999-06-09 | 1999-06-09 | Laminated soundproof material and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000347670A true JP2000347670A (en) | 2000-12-15 |
| JP4237874B2 JP4237874B2 (en) | 2009-03-11 |
Family
ID=15743325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16185999A Expired - Lifetime JP4237874B2 (en) | 1999-06-09 | 1999-06-09 | Laminated soundproof material and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4237874B2 (en) |
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