JPH10236206A - Sound insulation material for vehicle - Google Patents
Sound insulation material for vehicleInfo
- Publication number
- JPH10236206A JPH10236206A JP9058426A JP5842697A JPH10236206A JP H10236206 A JPH10236206 A JP H10236206A JP 9058426 A JP9058426 A JP 9058426A JP 5842697 A JP5842697 A JP 5842697A JP H10236206 A JPH10236206 A JP H10236206A
- Authority
- JP
- Japan
- Prior art keywords
- density web
- low
- vehicle
- fiber
- web
- 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
- 239000012774 insulation material Substances 0.000 title abstract 3
- 239000000835 fiber Substances 0.000 claims abstract description 101
- 238000009413 insulation Methods 0.000 claims abstract description 35
- 239000011230 binding agent Substances 0.000 claims abstract description 33
- 230000005484 gravity Effects 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 71
- 239000004743 Polypropylene Substances 0.000 claims description 13
- 229920001155 polypropylene Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 8
- 239000004745 nonwoven fabric Substances 0.000 claims description 7
- 150000001336 alkenes Chemical class 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 21
- 229920013639 polyalphaolefin Polymers 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- 239000010426 asphalt Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- 229920000915 polyvinyl chloride Polymers 0.000 description 7
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229920013640 amorphous poly alpha olefin Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229920005629 polypropylene homopolymer Polymers 0.000 description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 3
- 206010033307 Overweight Diseases 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Passenger Equipment (AREA)
- Treatment Of Fiber Materials (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【技術分野】本発明は，車両の床，天井等の表面を被覆
する車両用防音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproofing material for vehicles, which covers surfaces such as floors and ceilings of vehicles.
【０００２】[0002]
【従来技術】図１３に示すごとく，自動車等の車両の内
側壁面９７には，車両用防音材９５が被覆されている。
車両用防音材９５としては，ＰＶＣ表皮９５１と，フェ
ルト９５２とを積層したものである。ＰＶＣ表皮９５１
は，ポリ塩化ビニルからなり，厚み２．０〜３．０ｍｍ
で，比重１．７ｇ／ｃｍ3 ，目付３．４〜５．１ｋｇ／
ｍ2 である。なお，目付とは，繊維製品の厚薄軽重を表
すための用語であり，平方メートル当たりの繊維製品の
重さをいう。2. Description of the Related Art As shown in FIG. 13, a vehicle soundproof material 95 is coated on an inner wall surface 97 of a vehicle such as an automobile.
As the vehicle soundproofing material 95, a PVC skin 951 and a felt 952 are laminated. PVC skin 951
Is made of polyvinyl chloride and has a thickness of 2.0 to 3.0 mm.
, Specific gravity 1.7 g / cm 3 , basis weight 3.4-5.1 kg /
m 2 . The basis weight is a term used to represent the thickness, lightness, and weight of a textile product, and refers to the weight of the textile product per square meter.
【０００３】また，フェルト９５２は再生綿をフェノー
ル等の樹脂バインダーで固めてフェルトしたものであ
り，その厚みは，１０〜３０ｍｍである。ＰＶＣ表皮９
５１とフェルト９５２とは，接着剤９５３により接着さ
れている。[0003] The felt 952 is made of recycled cotton solidified with a resin binder such as phenol and felted, and has a thickness of 10 to 30 mm. PVC skin 9
51 and the felt 952 are adhered by an adhesive 953.
【０００４】次に，内側壁面に上記車両用防音材を被覆
するに当たっては，まず，内側壁面９７にアスファルト
シート９６を熱融着する。アスファルトシート９６は，
一般には，厚みが３〜６ｍｍで，比重が４．６３ｇ／ｃ
ｍ3 であり，遮音効果及び制振効果が高い。アスファル
トシート９６は，車体に塗膜を焼き付けるときに用いる
焼付炉の熱により，内側壁面９７に融着する。次いで，
アスファルトシート９６の表面と上記車両用防音材９５
のフェルト９５２の側とを対面させた状態で，車両用防
音材９５をアスファルトシート９６の表面に置く。以上
により，内側壁面９７に車両用防音材９５が被覆され
る。[0004] Next, when coating the soundproof material for a vehicle on the inner wall surface, first, an asphalt sheet 96 is heat-sealed to the inner wall surface 97. Asphalt sheet 96
Generally, the thickness is 3-6mm and the specific gravity is 4.63g / c
m 3 , which is high in sound insulation and vibration damping effects. The asphalt sheet 96 is fused to the inner wall surface 97 by the heat of the baking furnace used for baking the coating film on the vehicle body. Then,
Surface of asphalt sheet 96 and soundproofing material 95 for vehicle
The vehicle soundproofing material 95 is placed on the surface of the asphalt sheet 96 with the felt 952 facing the same. As described above, the inner wall surface 97 is covered with the vehicle soundproofing material 95.
【０００５】[0005]
【解決しようとする課題】しかしながら，上記従来の車
両用防音材は，へたりやすく，また振動減衰が低い。However, the above-mentioned conventional soundproofing materials for vehicles are easy to settle and have low vibration damping.
【０００６】そこで，かかる問題を解決するために，従
来，図１４に示すごとく，低目付フェルト９３２及び高
目付フェルト９３３と，遮音シート９３１とを接着して
なる防音材９３が考えられる。低目付フェルト９３２
は，ポリプロピレン繊維からなるフェルトで，目付が２
００〜２５０ｇ／ｍ2 と少なく，通気性が良い。高目付
フェルト９３３は，再生綿繊維等をフェノール樹脂で接
着した比重の高いフェルトである。遮音シート９３１
は，厚み２〜３ｍｍのポリ塩化ビニルシートからなる。In order to solve such a problem, conventionally, as shown in FIG. 14, a soundproof material 93 formed by bonding a low-weight felt 932 and a high-weight felt 933 and a sound insulating sheet 931 is considered. Low weight felt 932
Is a felt made of polypropylene fiber with a basis weight of 2
It is as small as 00 to 250 g / m 2 and has good air permeability. The high-weight felt 933 is a felt having a high specific gravity in which recycled cotton fiber or the like is bonded with a phenol resin. Sound insulation sheet 931
Consists of a polyvinyl chloride sheet having a thickness of 2 to 3 mm.
【０００７】低目付フェルト９３２と高目付フェルト９
３３とは接着剤９３４により接着されている。低目付フ
ェルト９３２の表面には，遮音シート９３１が接着剤９
３５により接着されている。この防音材は，遮音性及び
振動減衰性に優れている。Low-weight felt 932 and high-weight felt 9
33 is adhered by an adhesive 934. On the surface of the low-weight felt 932, a sound insulating sheet 931 is attached with an adhesive 9.
35. This soundproofing material is excellent in sound insulation and vibration damping.
【０００８】しかし，低目付けフェルトはへたりやす
く，荷重がかかるとへたり，振動減衰性（制振性）が小
さくなる。そのため，アスファルシート等の制振材の施
行が必要である。しかし，アスファルトシートは，上記
のごとく比重が高いため，車両用防音材の全体重量を重
くする。そのため，上記防音材は，重量が重い。また，
各層を接着剤により接着する必要があるため，製造コス
トが高く，またリサイクルが困難である。[0008] However, low-weight felts tend to sag, and when a load is applied, they tend to sag, and their vibration damping properties (damping properties) are reduced. Therefore, it is necessary to use damping materials such as asphalt sheets. However, since the asphalt sheet has a high specific gravity as described above, the overall weight of the vehicle soundproofing material is increased. Therefore, the soundproofing material is heavy. Also,
Since each layer needs to be bonded with an adhesive, the production cost is high and recycling is difficult.
【０００９】本発明はかかる従来の問題点に鑑み，遮音
性及び制振性に優れ，軽量かつ安価で，リサイクル可能
な車両用防音材を提供しようとするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a lightweight, inexpensive, recyclable vehicle soundproofing material having excellent sound insulation and vibration damping properties.
【００１０】[0010]
【課題の解決手段】請求項１の発明は，車両の内側壁面
を被覆するための車両用防音材であって，上記車両用防
音材は，非晶質ポリ−αオレフィンを含むオレフィン系
樹脂と高比重充填材とからなる遮音シートと，フェルト
とよりなり，上記フェルトは，主繊維とバインダー繊維
とを混綿してなる低密度ウェブと，細繊化繊維とバイン
ダー繊維とを混綿してなる高密度ウェブとを重ね合わ
せ，波形状に折り畳んでなり，かつ上記低密度ウェブは
上記主繊維と上記バインダー繊維とが互いに融着してお
り，また，上記高密度ウェブは上記バインダー繊維と上
記細繊化繊維とが互いに融着して上記低密度ウェブより
も高い繊維密度を有しており，上記低密度ウェブと上記
遮音シートとは互いに融着してなることを特徴とする車
両用防音材である。According to the first aspect of the present invention, there is provided a soundproofing material for a vehicle for covering an inner wall surface of a vehicle, wherein the soundproofing material for a vehicle comprises an olefin resin containing an amorphous poly-α-olefin. It consists of a sound insulating sheet made of a high specific gravity filler and felt, and the felt is made of a low density web made by mixing main fibers and binder fibers, and a high density made by mixing finely divided fibers and binder fibers. The low-density web has the main fibers and the binder fibers fused to each other, and the high-density web has the binder fibers and the fine fibers. Wherein the synthetic fiber has a fiber density higher than that of the low-density web fused to each other, and the low-density web and the sound insulating sheet are fused to each other. is there.
【００１１】本発明の作用及び効果について説明する。
本発明の車両用防音材においては，遮音シートは高比重
充填材を含有しており，従来のＰＶＣ表皮よりも比重が
高い。そのため，質量則に従い，遮音シートの自重によ
り高い遮音効果が得られる。それ故，従来振動減衰及び
遮音のために必要であったアスファルトシートを削減で
きる。従って，車両用防音材の施工を簡略化することが
できる。また，比重の重いアスファルトシートを用いる
必要がなくなるため，車両用防音材が軽量となる。The operation and effect of the present invention will be described.
In the soundproofing material for vehicles of the present invention, the soundproofing sheet contains a high specific gravity filler, and has a higher specific gravity than the conventional PVC skin. Therefore, a high sound insulation effect can be obtained by the weight of the sound insulation sheet according to the mass rule. Therefore, asphalt sheets conventionally required for vibration damping and sound insulation can be reduced. Therefore, construction of the vehicle soundproofing material can be simplified. Further, since it is not necessary to use an asphalt sheet having a high specific gravity, the soundproofing material for a vehicle is reduced in weight.
【００１２】また，遮音シートの中には，非晶質ポリ−
αオレフィンが含まれている。非晶質ポリ−αオレフィ
ンは，一般に１３０℃前後で，自己発現粘着性を発揮す
る。そのため，遮音シートは，低密度ウェブに対して，
加熱による非晶質ポリ−αオレフィンの粘着性により，
融着することができる。また，加熱等により，上記遮音
シートは，フェルトにおける低密度ウェッブの側に対し
て，局部的にスポット融着することができる。[0012] Some of the sound insulating sheets include amorphous poly- lysates.
Contains α-olefin. Amorphous poly-α-olefins generally exhibit self-developing tackiness at around 130 ° C. For this reason, sound insulation sheets are used for low density webs.
Due to the tackiness of the amorphous poly-α-olefin by heating,
Can be fused. Further, by heating or the like, the sound insulating sheet can be locally spot-welded to the side of the low density web in the felt.
【００１３】また，遮音シートとフェルトとは，上記の
ごとく融着するため，両者を一体化することができる。
従って，安価に車両用防音材を得ることができる。ま
た，遮音シートとフェルトとを一体化することにより，
複数層に分割している防音材（図１５参照）に比べて，
高い遮音効果を得ることができる。Further, since the sound insulating sheet and the felt are fused as described above, both can be integrated.
Therefore, the vehicle soundproofing material can be obtained at low cost. Also, by integrating the sound insulation sheet and felt,
Compared to the soundproofing material divided into multiple layers (see FIG. 15),
A high sound insulation effect can be obtained.
【００１４】また，上記低密度ウェブに含まれている主
繊維は，低密度ウェブの骨格を形成している繊維であ
る。上記低密度ウェブに含まれているバインダー繊維
は，主繊維と融着して，主繊維の骨格形状を保持してい
る。そして，主繊維同志の間には，比較的大きな間隔が
形成されている。The main fibers contained in the low-density web are fibers forming a skeleton of the low-density web. The binder fibers contained in the low-density web are fused with the main fibers to maintain the skeleton shape of the main fibers. A relatively large space is formed between the main fibers.
【００１５】また，低密度ウェブは，主繊維と細繊化繊
維とが互いに融着することによりウェブを形成したもの
である。この低密度ウェブは，波形状に折り畳まれてい
る。従って，繊維密度が小さく，繊維間の間隔が大きい
ため，多くの空気を含む事ができる。それゆえ，空気の
振動が低密度ウェブの中で減衰される。特に，５００Ｈ
ｚ以下の低周波の振動を効果的に減衰することができ
る。The low-density web is formed by fusing main fibers and fine fibers to each other to form a web. This low-density web is folded in a wave shape. Therefore, since the fiber density is low and the spacing between the fibers is large, a large amount of air can be contained. Therefore, the vibration of the air is damped in the low density web. In particular, 500H
Low frequency vibrations of z or less can be effectively attenuated.
【００１６】一方，上記高密度ウェブに含まれている細
繊化繊維は，上記主繊維よりも細い繊維であり，繊維長
さも比較的短い。上記高密度ウェブに含まれているバイ
ンダー繊維は，細繊化繊維と融着して，細繊化繊維を高
密度に接着，保持している。On the other hand, the fine fibers contained in the high-density web are finer than the main fibers, and have a relatively short fiber length. The binder fibers contained in the high-density web are fused with the fine fibers to adhere and hold the fine fibers at a high density.
【００１７】また，高密度ウェブは，細繊化繊維とバイ
ンダー繊維とが互いに融着することによりウェブを形成
したものである。この高密度ウェブは，波形状に折り畳
まれている。従って，高密度ウェブは，優れた遮音効果
を発揮することができる。また，高密度ウェブは低密度
ウェブよりも繊維密度が高いため，特に，５００Ｈｚ以
上の音を効果的に吸音することができる。The high-density web is formed by fusing the finely divided fibers and the binder fibers to each other. This high-density web is folded in a wave shape. Therefore, a high-density web can exhibit an excellent sound insulation effect. Further, since the high-density web has a higher fiber density than the low-density web, in particular, it can effectively absorb sounds of 500 Hz or more.
【００１８】また，フェルトは，低密度ウェブと高密度
ウェブとを重ね合わせ波形状に折り畳み，両者を融着し
たものである。そのため，フェルトは，耐へたり性に優
れ，フェルトの繊維密度の変化がなく，バネ定数の変化
もない。更に，フェルトの波形状の上下方向の圧力に対
して，強い弾力性を有し，優れた形状回復力を発揮す
る。従って，上述のフェルトの制振効果及び遮音効果を
長期間維持することができる。The felt is obtained by overlapping a low-density web and a high-density web, folding the web into a corrugated shape, and fusing the two. Therefore, the felt has excellent sag resistance, does not change the fiber density of the felt, and does not change the spring constant. Furthermore, it has strong elasticity against pressure in the vertical direction of the wavy shape of the felt, and exhibits excellent shape recovery force. Therefore, it is possible to maintain the felt damping effect and the sound insulating effect of the felt for a long period of time.
【００１９】また，高密度ウェブと低密度ウェブとは波
形状に折り畳まれた状態で融着されている。そのため，
高密度ウェブと低密度ウェブとが一体品となり，フェル
ト全体の形状保持力が高い。更に，高密度ウェブは，そ
の中に含まれている細繊化繊維とバインダー繊維とが互
いに融着している。そのため，高密度ウェブは，低密度
ウェブよりも高い繊維密度となり，低密度ウェブよりも
硬く形状が安定している。The high-density web and the low-density web are fused in a state of being folded in a wave shape. for that reason,
The high-density web and low-density web are integrated into one piece, and the overall shape retention of the felt is high. Further, in the high-density web, the finely divided fibers and the binder fibers contained therein are fused to each other. Therefore, the high-density web has a higher fiber density than the low-density web, and is harder and more stable in shape than the low-density web.
【００２０】特に，高密度ウェブにおける波形状面と反
対側の面は，その中の細繊化繊維がバインダー繊維によ
り硬く融着して硬質面を形成している。そのため，この
硬質面が，高密度ウェブ及び低密度ウェブの波形状を保
持する。従って，上記フェルトは，永久ひずみがなく，
耐へたり性に優れている。In particular, the surface of the high-density web opposite to the corrugated surface forms a hard surface in which the finely divided fibers are hardened and fused by the binder fiber. Thus, the hard surface retains the corrugations of the high and low density webs. Therefore, the felt has no permanent set,
Excellent sag resistance.
【００２１】本発明の車両用防音材は，例えば，自動
車，トラック，トラクター，電車等の車両の床材，ダッ
シュ部材，トランク部材等として用いることができる。
また，フェルトの高密度部は弾発力がある。そのため，
本発明の車両用防音材はクッション性に優れ，車両の床
材にも適用できる。本発明の車両用防音材は，遮音シー
ト側を室内に，フェルト側を車両壁面に対面させて設置
することが好ましい。これにより，上記車両用防音材の
制振効果及び遮音効果をより一層高める事ができる。The soundproofing material for vehicles of the present invention can be used, for example, as flooring materials, dash members, trunk members and the like of vehicles such as automobiles, trucks, tractors, and trains.
The high-density part of felt has elasticity. for that reason,
INDUSTRIAL APPLICABILITY The vehicle soundproofing material of the present invention has excellent cushioning properties and can be applied to vehicle flooring. The soundproofing material for vehicles of the present invention is preferably installed with the soundproof sheet side in the room and the felt side facing the vehicle wall. Thereby, the vibration damping effect and the sound insulating effect of the vehicle soundproofing material can be further enhanced.
【００２２】また，請求項２の発明のように，上記低密
度ウェブは，上記バインダー繊維及び上記細繊化繊維の
他に，主繊維を含有していることが好ましい。これによ
り，遮音シートの製造を容易に行うことができる。Further, as in the second aspect of the present invention, it is preferable that the low-density web contains main fibers in addition to the binder fibers and the finely divided fibers. This makes it possible to easily manufacture the sound insulating sheet.
【００２３】また，請求項３の発明のように，上記高比
重充填材は，酸化鉄であることが好ましい。これによ
り，遮音シートが高比重となり，遮音効果をより有効に
発揮することができる。Further, as in the third aspect of the present invention, the high specific gravity filler is preferably iron oxide. As a result, the sound insulating sheet has a high specific gravity, and the sound insulating effect can be more effectively exerted.
【００２４】上記高比重充填材は，上記遮音シートの中
に，８０〜９０重量％含まれていることが好ましい。こ
れにより，遮音シートの比重が３．０ｇ／ｃｍ3 以上と
なり，１ｍ2 当たりの目付量が大きくなり，遮音性が向
上する。一方，８０重量％未満では従来のＰＶＣ表皮レ
ベルの軽い比重となり，遮音効果が低下するおそれがあ
り，逆に９０重量％を越えると遮音シートの成形が困難
となる恐れがある。It is preferable that the high specific gravity filler is contained in the sound insulating sheet in an amount of 80 to 90% by weight. As a result, the specific gravity of the sound insulating sheet becomes 3.0 g / cm 3 or more, the basis weight per 1 m 2 increases, and the sound insulating property is improved. On the other hand, if the content is less than 80% by weight, the specific gravity becomes lighter than that of the conventional PVC skin, and the sound insulation effect may be reduced.
【００２５】また，高密度ウェブの平均厚みは，低密度
ウェブの平均厚みよりも大きいことが好ましい。更に，
低密度ウェブの平均厚みに対する高密度ウェブの平均厚
みの比率は，１〜３であることが好ましい。これによ
り，より効果的に遮音効果及び制振効果を発揮すること
ができる。The average thickness of the high density web is preferably larger than the average thickness of the low density web. Furthermore,
The ratio of the average thickness of the high density web to the average thickness of the low density web is preferably 1-3. Thereby, the sound insulation effect and the vibration suppression effect can be more effectively exhibited.
【００２６】また，請求項４の発明のように，上記低密
度ウェブ及び上記高密度ウェブは，ポリプロピレン樹脂
からなることが好ましい。これにより，上記使用済みの
車両用防音材を粉砕することにより，車両用防音材のす
べてを遮音シートの原料として再利用（リサイクル）す
ることができる。それゆえ，本発明によれば，省資源化
にも貢献することができる。Further, as in the invention of claim 4, it is preferable that the low density web and the high density web are made of polypropylene resin. Thus, by crushing the used vehicle sound insulating material, all of the vehicle sound insulating material can be reused (recycled) as a raw material of the sound insulating sheet. Therefore, according to the present invention, it is possible to contribute to resource saving.
【００２７】遮音シートの中には，上記非晶質ポリ−α
オレフィンの他に，エチレンプロピレンラバー（ＥＰ
Ｒ），ポリプロピレン（ＰＰ）等を含有させることがで
きる。また，低密度ウェブに含まれる主繊維としては，
例えば，ポリプロピレンホモポリマーからなる２５デニ
ール繊維を用い，バインダー繊維としては，例えば，エ
チレンプロピレンーポリプロピレン２元ランダムコポリ
マーからなる４デニール繊維を用いることができる。In the sound insulating sheet, the amorphous poly-α is used.
In addition to olefins, ethylene propylene rubber (EP
R), polypropylene (PP) and the like. The main fibers contained in the low-density web include:
For example, 25 denier fibers made of a polypropylene homopolymer are used, and as the binder fibers, for example, 4 denier fibers made of a binary random copolymer of ethylene propylene and polypropylene can be used.
【００２８】また，高密度ウェブに含まれる細繊化繊維
としては，例えば，ポリプロピレンホモポリマーからな
る２デニール繊維を用い，バインダー繊維としては，例
えば，エチレンプロピレンーポリプロピレン２元ランダ
ムコポリマーを用いることができる。As the finely divided fibers contained in the high-density web, for example, 2-denier fibers composed of a polypropylene homopolymer are used, and as the binder fibers, for example, an ethylene propylene-polypropylene binary random copolymer is used. it can.
【００２９】更に，請求項５の発明のように，上記遮音
シートに含まれている上記オレフィン系樹脂，上記低密
度ウェブ及び上記高密度ウェブは，ポリプロピレン樹脂
からなることが好ましい。これにより，安価で軽量な車
両用防音材を得ることができる。Further, as in the fifth aspect of the present invention, it is preferable that the olefin resin, the low density web, and the high density web contained in the sound insulating sheet are made of a polypropylene resin. As a result, an inexpensive and lightweight vehicle soundproofing material can be obtained.
【００３０】また，請求項６の発明のように，上記遮音
シートの表面には，不織布が融着されていることが好ま
しい。これにより，遮音シートの強度が高くなる。ま
た，車両用防音材を湾曲させたり，圧縮した場合にも，
遮音シートがフェルトの低密度ウェブに対して追従し，
遮音シートの破れを防止することができる。Also, as in the invention of claim 6, it is preferable that a non-woven fabric is fused to the surface of the sound insulating sheet. Thereby, the strength of the sound insulating sheet is increased. Also, when the vehicle sound insulation is bent or compressed,
The sound insulation sheet follows the low density web of felt,
The sound insulation sheet can be prevented from being broken.
【００３１】[0031]
実施形態例１ 本発明の実施形態例に係る車両用防音材について，図１
〜図１０を用いて説明する。本例の車両用防音材３は，
図１に示すごとく，遮音シート１とフェルト２とよりな
る。遮音シート１は，非晶質ポリ−αオレフィンを含む
オレフィン系樹脂に高比重充填材１０を含浸させてな
る。Embodiment 1 FIG. 1 shows a soundproofing material for a vehicle according to an embodiment of the present invention.
This will be described with reference to FIG. The vehicle soundproofing material 3 of this example is
As shown in FIG. 1, a sound insulating sheet 1 and a felt 2 are provided. The sound insulation sheet 1 is formed by impregnating an olefin resin containing an amorphous poly-α olefin with a high specific gravity filler 10.
【００３２】フェルト２は，図２に示すごとく，低密度
ウェブ２１と，高密度ウェブ２２とを重ね合わせ，波形
状に折り畳んだものである。低密度ウェブ２１は，主繊
維とバインダー繊維とを混綿したものである。高密度ウ
ェブ２２は，細繊化繊維とバインダー繊維と主繊維とを
混綿したものである。As shown in FIG. 2, the felt 2 has a low-density web 21 and a high-density web 22 overlapped and folded in a wave shape. The low-density web 21 is a mixture of main fibers and binder fibers. The high-density web 22 is a mixture of fine fibers, binder fibers, and main fibers.
【００３３】高密度ウェブ２２は，その中に含まれてい
る細繊化繊維及び主繊維がバインダー繊維によって互い
に融着することにより，上記低密度ウェブよりも高い繊
維密度を有している，低密度ウェブ２１と遮音シート１
とは，互いに融着している。車両用防音材３は，例え
ば，図１に示すごとく，高密度ウェブ２１の側を車両床
板９１に，遮音シート１の側を車室９２内に向けて配置
される。The high-density web 22 has a fiber density higher than that of the low-density web because the finely divided fibers and the main fibers contained therein are fused to each other by the binder fibers. Density web 21 and sound insulation sheet 1
Are fused to each other. For example, as shown in FIG. 1, the vehicle soundproofing material 3 is disposed with the high-density web 21 side facing the vehicle floor plate 91 and the sound insulation sheet 1 side facing the vehicle interior 92.
【００３４】次に，車両用防音材の詳細について説明す
る。遮音シートは，酸化鉄からなる高比重充填材（国興
産業ＢＵＳ比重６．５ｇ／ｃｍ3 ）８６重量％と，非晶
質ポリオレフィン（宇部レキセン製，商品名ＵＴ３３８
５）３重量％と，エチレンプロピレンラバー（ＪＳＲＥ
Ｐ９３１）９．５重量％と，γ−ポリプロピレン（ＧＲ
ＰＢ２２１）１．５重量％とからなり，比重は３．３１
ｇ／ｃｍ3 であり，厚みは１〜２ｍｍである。Next, the soundproofing material for a vehicle will be described in detail. The sound insulation sheet is composed of 86% by weight of a high specific gravity filler (Kokuyo Sangyo BUS specific gravity 6.5 g / cm 3 ) made of iron oxide and an amorphous polyolefin (trade name UT338 manufactured by Ube Lexen).
5) 3% by weight of ethylene propylene rubber (JSRE)
P931) 9.5% by weight and γ-polypropylene (GR
PB221) 1.5% by weight, specific gravity being 3.31
g / cm 3 and a thickness of 1-2 mm.
【００３５】低密度ウェブは，主繊維６５重量％と，バ
インダー繊維３５重量％とからなる。高密度ウェブは，
主繊維１０重量％と，バインダー繊維４５重量％と，細
繊化繊維４５重量％とからなる。The low-density web consists of 65% by weight of main fibers and 35% by weight of binder fibers. The high density web
It consists of 10% by weight of main fiber, 45% by weight of binder fiber and 45% by weight of fine fiber.
【００３６】低密度ウェブ及び高密度ウェブの双方に含
まれている主繊維は，２５デニール，繊維長さ７６ｍ
ｍ，捲縮数１０／インチの単糸の繊維であり，ポリプロ
ピレンホモポリマーからなる。また，低密度ウェブ及び
高密度ウェブの双方に含まれているバインダー繊維は，
４デニール，繊維長さ５１ｍｍ，捲縮数１５／インチの
単糸の繊維であり，エチレンプロピレン−ポリプロピレ
ン２元ランダムコポリマーからなる。高密度ウェブに含
まれている細繊化繊維は，２デニール繊維，繊維長さ５
１ｍｍ，捲縮数２０／インチの単糸の繊維であり，ポリ
プロピレンホモポリマーからなる。The main fibers contained in both the low-density web and the high-density web are 25 denier and a fiber length of 76 m.
m, a single yarn fiber having a number of crimps of 10 / inch, made of a polypropylene homopolymer. Also, the binder fibers contained in both the low density web and the high density web are:
It is a single yarn fiber having a denier of 4 denier, a fiber length of 51 mm, and a number of crimps of 15 / inch, and is made of an ethylene propylene-polypropylene binary random copolymer. The fine fiber contained in the high-density web is 2 denier fiber, fiber length 5
1 mm, a single yarn fiber having a crimp number of 20 / inch, made of a polypropylene homopolymer.
【００３７】フェルト２の厚みは２０〜３５ｍｍであ
り，目付は８００ｇ／ｍ2 であり，ウェーブ密度は３回
／１０ｃｍである。フェルト２の中の低密度ウェブ２１
の目付は２５０ｇ／ｍ2 であり，高密度ウェブ２２の目
付は５５０ｇ／ｍ2 である。The felt 2 has a thickness of 20 to 35 mm, a basis weight of 800 g / m 2 and a wave density of 3 times / 10 cm. Low density web 21 in felt 2
Is 250 g / m 2 , and the density of the high density web 22 is 550 g / m 2 .
【００３８】上記車両用防音材の製造方法について説明
する。上記フェルトを製造するため，まず，主繊維とバ
インダー繊維とを上記割合で混綿して，目付８０ｇ／ｍ
2 の低密度ウェブを形成する。また，主繊維と細繊化繊
維とバインダー繊維とを上記割合で混綿して，目付１６
０ｇ／ｍ2 の高密度ウェブを形成する。次いで，図３に
示すごとく，複層カード機にて，上記低密度ウェブ２１
と高密度ウェブ２２とを重ね合わせ，積層カード２０を
得る。A method for manufacturing the soundproofing material for a vehicle will be described. In order to manufacture the felt, first, the main fiber and the binder fiber are mixed in the above ratio, and the basis weight is 80 g / m2.
Form a low density web of 2 . Further, the main fiber, the finely divided fiber and the binder fiber are mixed in the above ratio to obtain a basis weight of 16%.
Form a high density web of 0 g / m 2 . Next, as shown in FIG.
And the high-density web 22 are overlaid to obtain a laminated card 20.
【００３９】次いで，図４に示すごとく，波形成形機を
用いて（図示略），上記積層カード２０を横方向に波形
状に順次折り畳んでいく。そして，その中の低密度ウェ
ブ２１の目付を２５０ｇ／ｍ2 ，高密度ウェブ２２の目
付を５５０ｇ／ｍ2 とする。次いで，図５に示すごと
く，加圧熱成形機８１にて，波形状に折り畳んだ積層カ
ード２０を上下方向から加圧しながら，１４５℃の熱風
８１０を１分間吹き付ける。Next, as shown in FIG. 4, the laminated card 20 is sequentially folded in a transverse direction into a wave shape using a waveform forming machine (not shown). The basis weight of the low-density web 21 is 250 g / m 2 and the basis weight of the high-density web 22 is 550 g / m 2 . Next, as shown in FIG. 5, hot air 810 at 145 ° C. is blown for one minute while pressing the laminated card 20 folded in a wave shape from above and below by a press thermoforming machine 81.
【００４０】これにより，図６に示すごとく，高密度ウ
ェブ２２の中に含まれている細繊化繊維，主繊維及びバ
インダー繊維の３者は，互いに融着する。また，同様
に，低密度ウェブ２１の中に含まれている主繊維及びバ
インダー繊維は，互いに融着する。そして，高密度ウェ
ブと低密度ウェブとも，上記両者に含まれるバインダー
繊維によって，その波形状の接触面２００において互い
に融着して，一体化した上記フェルト２が得られる。As a result, as shown in FIG. 6, the fine fiber, the main fiber and the binder fiber contained in the high density web 22 are fused to each other. Similarly, the main fibers and the binder fibers contained in the low-density web 21 fuse with each other. Then, both the high-density web and the low-density web are fused to each other at the corrugated contact surface 200 by the binder fibers contained in the two, and the integrated felt 2 is obtained.
【００４１】一方，高比重充填材とエチレンプロピレン
ラバーとγ−ポリプロピレンとを混練し，溶融させて，
シート状に成形して，遮音シート１を得る。次いで，図
６に示すごとく，フェルト２の低密度ウェブ２１を，遮
音シート１に対面させた状態で積層し，これらを，成形
用上型８３１と成形用下型８３２との間のキャビティの
中に配置する。On the other hand, a high specific gravity filler, ethylene propylene rubber and γ-polypropylene are kneaded and melted.
The sound insulating sheet 1 is obtained by forming the sheet into a sheet shape. Next, as shown in FIG. 6, the low-density webs 21 of the felt 2 are laminated in a state of facing the sound insulating sheet 1, and these are stacked in a cavity between the upper mold 831 and the lower mold 832. To place.
【００４２】次いで，成形用上型８３１及び成形用下型
８３２により，フェルト２及び遮音シート１を押圧しな
がら，１４０℃で加熱する。これにより，フェルト２の
低密度ウェブ２１と遮音シート１とが熱融着して，図１
に示すごとく一体化した車両用防音材３が得られる。得
られた車両用防音材３は，クリップ等により車両床板９
に取り付ける。Next, the felt 2 and the sound insulating sheet 1 are heated at 140 ° C. while being pressed by the upper mold 831 and the lower mold 832. As a result, the low-density web 21 of the felt 2 and the sound insulating sheet 1 are thermally fused to each other, and FIG.
As a result, an integrated vehicle soundproofing material 3 is obtained as shown in FIG. The obtained vehicle soundproofing material 3 is attached to the vehicle floor plate 9 with a clip or the like.
Attach to
【００４３】次に，本例の車両用防音材について，以下
のようにして，平均遮音量，制振性，比重，製造コス
ト，耐へたり性の評価を行った。これらの評価の際に，
比較のために，上述した従来の防音材（図１４，図１
５）も，同様の評価を行った。図１４に示す防音材は比
較例１とし，図１５に示す防音材は比較例２とした。Next, the average sound insulation, vibration damping, specific gravity, manufacturing cost, and sag resistance of the vehicle soundproofing material of this example were evaluated as follows. During these assessments,
For comparison, the conventional soundproofing material described above (FIGS.
The same evaluation was performed for 5). The soundproofing material shown in FIG. 14 is Comparative Example 1, and the soundproofing material shown in FIG.
【００４４】（遮音性の評価）残響室を音源側とし，無
響室を受音側として，両者の間に車両用防音材を配置し
た。このときの，音源側と受音側との間の音圧レベル差
を測定し，これを遮音量とした。図７に示すごとく，２
５０〜２０００Ｈｚの１／３オクターブ周波数の間での
音圧レベル差の平均値を求めて，これを平均遮音量
（ｘ）とした。平均遮音量（ｘ）が４３ｄＢ以上の場合
を○，４０ｄＢ以上４３ｄＢ未満の場合を△，４０ｄＢ
未満の場合を×と判定した。(Evaluation of Sound Insulation Property) A reverberation room was set as a sound source side, and an anechoic room was set as a sound receiving side, and a soundproof material for vehicles was arranged between the two. At this time, the sound pressure level difference between the sound source side and the sound receiving side was measured, and this was defined as the sound insulation. As shown in FIG.
The average value of the sound pressure level differences between 1/3 octave frequencies of 50 to 2000 Hz was determined, and this was defined as the average sound insulation volume (x). O when the average sound insulation volume (x) is 43 dB or more, Δ when 40 dB or more and less than 43 dB, 40 dB
The case of less than was judged as x.
【００４５】（制振性の評価）図８に示すごとく，５０
０×４００ｍｍの大きさの車両用防音材３を，鉄板９１
の上に載せた。このとき，車両用防音材３の高密度ウェ
ブ２２が，鉄板９１と対面するようにした。次いで，加
振機７２で骨格７１及び鉄板９１を加振する。この時の
鉄板振動Ｘ0 （加速度）に対する表皮振動Ｘ2 の比（Ｘ
2 ／Ｘ0 ）を測定し，各周波数における振動減衰量（ｄ
Ｂ）を求めた。(Evaluation of Vibration Suppression) As shown in FIG.
A vehicle soundproofing material 3 having a size of 0 × 400 mm is placed on an iron plate 91.
On top. At this time, the high-density web 22 of the vehicle soundproofing material 3 was made to face the iron plate 91. Next, the frame 71 and the iron plate 91 are vibrated by the vibrator 72. At this time, the ratio of the skin vibration X 2 to the iron plate vibration X 0 (acceleration) (X
2 / X 0 ) and the vibration attenuation (d
B) was determined.
【００４６】図９に示すごとく，このときの，一次共振
の振動減衰量から，車両用防音材の制振性を評価した。
即ち，一次共振時の減衰量が２０ｄＢ未満の場合を○，
２０ｄＢ以上２５ｄＢ未満の場合を△，２５ｄＢ以上の
場合を×と判定した。As shown in FIG. 9, the vibration damping performance of the vehicle sound insulating material was evaluated from the vibration attenuation of the primary resonance at this time.
That is, when the attenuation at the time of the primary resonance is less than 20 dB,
The case of 20 dB or more and less than 25 dB was judged as Δ, and the case of 25 dB or more was judged as ×.
【００４７】（比重）車両用防音材の比重が６．５ｇ／
ｃｍ3 未満の場合を○，６．５ｇ／ｃｍ3 以上７．０ｇ
／ｃｍ3 未満の場合を△，７．０ｇ／ｃｍ3 以上の場合
を×と判定した。また，比較例２の車両用防音材の比重
を１００としたときの，実施形態例１及び比較例１の車
両用防音材の比重の相対値を求めた。(Specific Gravity) The specific gravity of the soundproofing material for vehicles is 6.5 g /
in the case of less than cm 3 ○, 6.5g / cm 3 or more 7.0g
/ Cm 3 was judged as Δ, and the case of 7.0 g / cm 3 or more was judged as ×. Further, when the specific gravity of the vehicle soundproof material of Comparative Example 2 was set to 100, the relative value of the specific gravity of the vehicle soundproof material of Example 1 and Comparative Example 1 was determined.
【００４８】（製造コストの評価）１ｍ2 当たりの車両
用防音材の原料の買い価格と加工費とを加算して，製造
コストを算出した。そして，比較例２の製造コストを１
００としたときの相対値で示した。相対値が１００未満
の場合を○，１００以上１０５未満の場合を△，１０５
以上の場合を×と判定した。[0048] by adding the purchase price of raw materials (production cost of evaluation) 1m 2 per vehicle for the soundproofing material and a processing cost, to calculate the production cost. Then, the manufacturing cost of Comparative Example 2 is reduced by 1
It is shown as a relative value when 00 is set. ○ when the relative value is less than 100, Δ when the relative value is 100 or more and less than 105, 105
The above case was determined as x.
【００４９】（耐へたり性の評価）まず，車両用防音材
の初期厚みを測定した。次いで，５０℃，９５％ＲＨ雰
囲気中で，平らな台の上に載置した車両用防音材に対し
て，１５ｋｇｆの荷重をかけた状態で，１１時間静置し
た。次に，荷重を取り除き，車両用防音材の厚みを測定
し，以下の算出式（１）で，へたり率を算出した。(Evaluation of Set Resistance) First, the initial thickness of the soundproofing material for a vehicle was measured. Next, in a 50 ° C., 95% RH atmosphere, the vehicle soundproofing material placed on a flat table was allowed to stand for 11 hours with a load of 15 kgf applied. Next, the load was removed, the thickness of the vehicle sound insulating material was measured, and the set rate was calculated by the following calculation formula (1).
【００５０】へたり率＝１００×（初期厚み−荷重解放
後の厚み）／初期厚み…算出式（１）Detachment rate = 100 × (initial thickness−thickness after release of load) / initial thickness ... Formula (1)
【００５１】へたり率が３０％未満の場合を○，３０％
以上４５％未満の場合を△，４５％以上の場合を×と判
定した。When the set rate is less than 30%, it is indicated by ○, 30%
The case of not less than 45% was judged as Δ, and the case of 45% or more was judged as ×.
【００５２】以上の評価結果を，表１に示した。これら
の評価結果より，実施形態例１と比較例１，２とを比較
すると，実施形態例１は，比較例１，２に比べて，平均
遮音量が１０％，制振性が同等又は１７％向上した。比
重は５％軽かった。製造コストは１０％低かった。ま
た，耐へたり性は高かった。本例の車両用防音材は，優
れた遮音性能及び制振性能を有するため，従来のように
比重の大きいアスファルトシートを用いる必要がなく，
軽量である。Table 1 shows the above evaluation results. From these evaluation results, when the first embodiment is compared with the first and second comparative examples, the first embodiment has an average sound insulation volume of 10% and an equivalent or 17% lower vibration damping than the first and second comparative examples. % Improved. The specific gravity was 5% lighter. Manufacturing costs were 10% lower. The sag resistance was high. Since the vehicle soundproofing material of this example has excellent sound insulation performance and vibration damping performance, it is not necessary to use an asphalt sheet with a large specific gravity as in the past.
Lightweight.
【００５３】以上から，実施形態例１の車両用防音材
は，遮音性，制振性及び耐へたり性に優れており，かつ
軽量で製造コストが安価であることがわかる。一方，比
較例１（図１４）は，遮音性，制振性及び耐へたり性が
低かった。比較例２（図１５）は，重かった。これは，
アスファルトシートを用いているからである。From the above, it can be seen that the vehicle soundproofing material of the first embodiment is excellent in sound insulation, vibration damping and sag resistance, light in weight and inexpensive in manufacturing cost. On the other hand, Comparative Example 1 (FIG. 14) was low in sound insulation, vibration damping and sag resistance. Comparative Example 2 (FIG. 15) was heavy. this is,
This is because an asphalt sheet is used.
【００５４】[0054]
【表１】 [Table 1]
【００５５】また，本例の車両用防音材は，上述の特性
のほか，リサイクル性が高いという特性を有する。即
ち，本例の車両用防音材は，フェルト及び遮音シートが
いずれもオレフィンからなる。そのため，図１０に示す
ごとく，車両用防音材３を型取りして，製品部分３７を
車両に取り付けて使用した後の廃品，また型取り後の余
剰部分３６を，粉砕することにより，再度，遮音シート
の原料として用いる事ができる。従って，本例の車両用
防音材によれば，１００％リサイクル（再利用）をする
ことを実現できる。Further, in addition to the above-mentioned characteristics, the vehicle soundproofing material of this embodiment has a characteristic of high recyclability. That is, in the vehicle soundproofing material of this example, both the felt and the soundproofing sheet are made of olefin. Therefore, as shown in FIG. 10, the vehicle soundproofing material 3 is molded, and the waste part after the product part 37 is attached to the vehicle and used, and the surplus part 36 after the molding is pulverized again, thereby again. It can be used as a raw material for sound insulation sheets. Therefore, according to the vehicle soundproofing material of this example, 100% recycling (reuse) can be realized.
【００５６】実施形態例２ 本例においては，図１１，図１２に示すごとく，遮音シ
ートの表面に，不織布を被覆した点が，上記実施形態例
１と相違する。即ち，図１１に示すごとく，遮音シート
１の表面は，目付３０ｇ／ｍ2 の不織布１１が被覆され
ている。不織布１１は，ポリプロピレンからなる。その
他は，実施形態例１と同様である。Second Embodiment The second embodiment differs from the first embodiment in that the surface of the sound insulating sheet is covered with a nonwoven fabric as shown in FIGS. That is, as shown in FIG. 11, the surface of the sound insulating sheet 1 is covered with a nonwoven fabric 11 having a basis weight of 30 g / m 2 . The nonwoven fabric 11 is made of polypropylene. Other configurations are the same as those of the first embodiment.
【００５７】本例の車両用防音材３は，遮音シート１の
表面に不織布１１を被覆しているため，車両用防音材３
を湾曲させたり，図１２に示すごとく，その一部を高絞
り成形部３０とした場合にも，遮音シート１がフェルト
２に追従して，破れを生じない。In the vehicle soundproofing material 3 of this embodiment, since the surface of the soundproof sheet 1 is covered with the nonwoven fabric 11, the vehicle soundproofing material 3
Even if the curved portion is bent or a part thereof is formed as the high drawing portion 30, as shown in FIG. 12, the sound insulating sheet 1 follows the felt 2 and does not tear.
【００５８】また，上記実施形態例１と同様の評価を行
ったところ，本例の車両用防音材も，実施形態例１と同
様に優れた特性を発揮した。なお，遮音シート１の表面
には，上記不織布の代わりに，装飾用のカーペットを被
覆してもよい。この場合には，車両用防音材を車室内の
カーペットとして用いることができ，かつ遮音効果及び
制振効果を発揮することができる。When the same evaluation as in the first embodiment was performed, the soundproofing material for a vehicle of the present embodiment also exhibited excellent characteristics as in the first embodiment. The surface of the sound insulating sheet 1 may be covered with a decorative carpet instead of the nonwoven fabric. In this case, the vehicle soundproofing material can be used as a carpet in the vehicle interior, and can exhibit a sound insulating effect and a vibration damping effect.
【００５９】[0059]
【発明の効果】本発明によれば，遮音性及び制振性に優
れ，軽量かつ安価で，リサイクル可能な車両用防音材を
提供することができる。According to the present invention, it is possible to provide a lightweight, inexpensive and recyclable vehicle soundproofing material having excellent sound insulation and vibration damping properties.
【図１】実施形態例１の車両用防音材の断面説明図。FIG. 1 is an explanatory cross-sectional view of a vehicle soundproofing material according to a first embodiment.
【図２】実施形態例１における，フェルトの斜視図。FIG. 2 is a perspective view of a felt according to the first embodiment.
【図３】実施形態例１における，積層カードの斜視図。FIG. 3 is a perspective view of a laminated card according to the first embodiment.
【図４】実施形態例１における，波形に折り畳んだ積層
カードの断面図。FIG. 4 is a cross-sectional view of the laminated card folded in a waveform according to the first embodiment.
【図５】実施形態例１における，低密度ウェブと高密度
ウェブとの熱融着方法を示す説明図。FIG. 5 is an explanatory view showing a method for heat-sealing a low-density web and a high-density web in the first embodiment.
【図６】実施形態例１における，フェルトと遮音シート
との融着方法を示す説明図。FIG. 6 is an explanatory view showing a method of fusing the felt and the sound insulating sheet in the first embodiment.
【図７】実施形態例１における，遮音量の評価方法を示
す説明図。FIG. 7 is an explanatory diagram showing a method for evaluating a sound insulation volume in the first embodiment.
【図８】実施形態例１における，制振性の評価方法を示
す説明図。FIG. 8 is an explanatory diagram showing a method of evaluating vibration damping in the first embodiment.
【図９】実施形態例１における，制振性の評価方法を示
す説明図。FIG. 9 is an explanatory diagram illustrating a method for evaluating vibration damping properties according to the first embodiment.
【図１０】実施形態例１における，車両用防音材の再利
用工程の説明図。FIG. 10 is an explanatory diagram of a reuse process of the vehicle soundproofing material in the first embodiment.
【図１１】実施形態例２の車両用防音材の断面図。FIG. 11 is a cross-sectional view of a vehicle soundproofing material according to a second embodiment.
【図１２】実施形態例２における，車両用防音材の高絞
り部の斜視図。FIG. 12 is a perspective view of a high-aperture portion of a soundproofing material for a vehicle according to a second embodiment.
【図１３】従来例の車両用防音材の断面説明図。FIG. 13 is an explanatory sectional view of a conventional soundproof material for a vehicle.
【図１４】他の従来例の車両用防音材の断面説明図。FIG. 14 is an explanatory sectional view of another conventional soundproof material for a vehicle.
１．．．遮音シート， １０．．．高比重充填材， ２．．．フェルト， ２１．．．低密度ウェブ， ２００．．．波型面， ２２．．．高密度ウェブ， ３．．．車両用防音材， ９．．．車両床板， 1. . . 9. sound insulation sheet, . . 1. High specific gravity filler, . . Felt, 21. . . Low density web, 200. . . 22. corrugated surface; . . 2. high density web; . . 8. Soundproofing material for vehicles, . . Vehicle floorboard,
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｇ１０Ｋ 11/162 Ｇ１０Ｋ 11/16 Ａ 11/16 Ｄ Continued on the front page (51) Int.Cl. 6 Identification code FI G10K 11/162 G10K 11/16 A 11/16 D
Claims (6)
防音材であって，上記車両用防音材は，非晶質ポリ−α
オレフィンを含むオレフィン系樹脂と高比重充填材とか
らなる遮音シートと，フェルトとよりなり，上記フェル
トは，主繊維とバインダー繊維とを混綿してなる低密度
ウェブと，細繊化繊維とバインダー繊維とを混綿してな
る高密度ウェブとを重ね合わせ，波形状に折り畳んでな
り，かつ上記低密度ウェブは上記主繊維と上記バインダ
ー繊維とが互いに融着しており，また，上記高密度ウェ
ブは上記バインダー繊維と上記細繊化繊維とが互いに融
着して上記低密度ウェブよりも高い繊維密度を有してお
り，上記低密度ウェブと上記遮音シートとは互いに融着
してなることを特徴とする車両用防音材。1. A vehicle soundproofing material for covering an inner wall surface of a vehicle, wherein the vehicle soundproofing material is amorphous poly-α.
It consists of a sound insulating sheet composed of an olefin-based resin containing olefin and a high specific gravity filler, and a felt. The felt is a low-density web made by mixing main fibers and binder fibers, finely divided fibers and binder fibers. And a high-density web obtained by blending the main fiber and the binder fiber in the low-density web, and the high-density web is fused to the low-density web. The binder fiber and the fine fiber are fused to each other to have a fiber density higher than that of the low-density web, and the low-density web and the sound insulating sheet are fused to each other. Soundproofing material for vehicles.
は，上記バインダー繊維及び上記細繊化繊維の他に，主
繊維を含有していることを特徴とする車両用防音材。2. The soundproofing material for vehicles according to claim 1, wherein the low-density web contains main fibers in addition to the binder fibers and the finely divided fibers.
填材は，酸化鉄であることを特徴とする車両用防音材。3. The soundproofing material for vehicles according to claim 1, wherein the high specific gravity filler is iron oxide.
上記低密度ウェブ及び上記高密度ウェブは，ポリプロピ
レン樹脂からなることを特徴とする車両用防音材。4. The method according to claim 1, wherein:
The low-density web and the high-density web are made of a polypropylene resin.
上記遮音シートに含まれている上記オレフィン系樹脂，
上記低密度ウェブ及び上記高密度ウェブは，ポリプロピ
レン樹脂からなることを特徴とする車両用防音材。5. The method according to claim 1, wherein:
The olefin resin contained in the sound insulation sheet,
The low-density web and the high-density web are made of a polypropylene resin.
上記遮音シートの表面には，不織布が融着されているこ
とを特徴とする車両用防音材。6. The method according to claim 1, wherein:
A soundproofing material for vehicles, wherein a nonwoven fabric is fused to a surface of the soundproofing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05842697A JP3399279B2 (en) | 1997-02-25 | 1997-02-25 | Soundproofing material for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05842697A JP3399279B2 (en) | 1997-02-25 | 1997-02-25 | Soundproofing material for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10236206A true JPH10236206A (en) | 1998-09-08 |
| JP3399279B2 JP3399279B2 (en) | 2003-04-21 |
Family
ID=13084066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05842697A Expired - Fee Related JP3399279B2 (en) | 1997-02-25 | 1997-02-25 | Soundproofing material for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3399279B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10247085A (en) * | 1997-03-04 | 1998-09-14 | Kanebo Ltd | Sound insulation structure |
| KR20020061028A (en) * | 2001-01-12 | 2002-07-22 | 한국펠저 주식회사 | One body type bottom seat for car and manufacturing apparatus thereof |
| JP2002215169A (en) * | 2001-01-18 | 2002-07-31 | Kasai Kogyo Co Ltd | Acoustic material for vehicle |
| KR20030047438A (en) * | 2001-12-10 | 2003-06-18 | (주)대한솔루션 | sound absorbing and insulating material |
| WO2008079967A1 (en) * | 2006-12-20 | 2008-07-03 | 3M Innovative Properties Company | Damping tape and articles comprising same |
| JP2009279872A (en) * | 2008-05-23 | 2009-12-03 | Canon Inc | Fiber absorber and ink tank |
| US20110311758A1 (en) * | 2010-05-24 | 2011-12-22 | Jim Burns | Fiber-based carpet cushion with added resilience from vertically oriented fiber construction |
| WO2017057081A1 (en) * | 2015-09-29 | 2017-04-06 | コニカミノルタ株式会社 | Laminate, and vibration-damping sheet and sound-insulating sheet having same |
| JP2019207274A (en) * | 2018-05-28 | 2019-12-05 | 日本グラスファイバー工業株式会社 | Soundproof material and method of manufacturing the same |
| JP2024062749A (en) * | 2022-10-25 | 2024-05-10 | トヨタ紡織株式会社 | Vehicle inserts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101798496B1 (en) * | 2014-07-22 | 2017-11-16 | 한국과학기술원 | Wall and Floor Structures for reducing floor impact sound |
-
1997
- 1997-02-25 JP JP05842697A patent/JP3399279B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10247085A (en) * | 1997-03-04 | 1998-09-14 | Kanebo Ltd | Sound insulation structure |
| KR20020061028A (en) * | 2001-01-12 | 2002-07-22 | 한국펠저 주식회사 | One body type bottom seat for car and manufacturing apparatus thereof |
| JP2002215169A (en) * | 2001-01-18 | 2002-07-31 | Kasai Kogyo Co Ltd | Acoustic material for vehicle |
| KR20030047438A (en) * | 2001-12-10 | 2003-06-18 | (주)대한솔루션 | sound absorbing and insulating material |
| WO2008079967A1 (en) * | 2006-12-20 | 2008-07-03 | 3M Innovative Properties Company | Damping tape and articles comprising same |
| JP2009279872A (en) * | 2008-05-23 | 2009-12-03 | Canon Inc | Fiber absorber and ink tank |
| US20110311758A1 (en) * | 2010-05-24 | 2011-12-22 | Jim Burns | Fiber-based carpet cushion with added resilience from vertically oriented fiber construction |
| JP2013532235A (en) * | 2010-05-24 | 2013-08-15 | ショー インダストリーズ グループ インコーポレイテッド | Fiber-based carpet cushion with elasticity imparted from vertically oriented fiber structure |
| US8987151B2 (en) * | 2010-05-24 | 2015-03-24 | Columbia Insurance Company | Fiber-based carpet cushion with added resilience from vertically oriented fiber construction |
| WO2017057081A1 (en) * | 2015-09-29 | 2017-04-06 | コニカミノルタ株式会社 | Laminate, and vibration-damping sheet and sound-insulating sheet having same |
| JP2019207274A (en) * | 2018-05-28 | 2019-12-05 | 日本グラスファイバー工業株式会社 | Soundproof material and method of manufacturing the same |
| JP2024062749A (en) * | 2022-10-25 | 2024-05-10 | トヨタ紡織株式会社 | Vehicle inserts |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3399279B2 (en) | 2003-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100287796B1 (en) | Soundproof Web | |
| JP2019513620A (en) | Method of manufacturing soundproof trim panel for automobile interior | |
| JPH11508328A (en) | Method for attenuating sound and soundproofing body therefor | |
| US20040180592A1 (en) | Thermoformable acoustic sheet material | |
| JP3399279B2 (en) | Soundproofing material for vehicles | |
| JP3347253B2 (en) | Automotive silencer pad | |
| CN108698361A (en) | Multilayer acoustics and/or enhancing supatex fabric | |
| US20260065887A1 (en) | Insulation component manufacturing method and flow-tight, light-weight insulation component for vehicles | |
| JP7374101B2 (en) | composite sound absorption layer | |
| JP3342817B2 (en) | Sound insulation structure | |
| JP2974920B2 (en) | Silencer pad for car floor | |
| JP3264230B2 (en) | Vehicle interior materials | |
| JP4209723B2 (en) | Molded laying material | |
| JP2631792B2 (en) | Carpet for car floor | |
| JP3564973B2 (en) | Carpet material | |
| JP3188598B2 (en) | Sound insulation structure and method of manufacturing the same | |
| JPH11202873A (en) | Sound insulation | |
| JP2000202933A (en) | Sound insulation | |
| WO2005044553A1 (en) | Composite insulation | |
| JP2977146B2 (en) | Sound insulation structure and method of manufacturing the same | |
| JP3264761B2 (en) | Polypropylene silencer pad | |
| JP3003445B2 (en) | Automotive interior materials | |
| JP2009029219A (en) | Automotive interior materials | |
| JPH10181468A (en) | Automotive floor laying interior material and manufacturing method thereof | |
| JPH0776052A (en) | Laminated structure and interior materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |