JPS6051432B2 - Molded soundproofing material for vehicles and manufacturing method - Google Patents

Description

【発明の詳細な説明】 本発明は車輌、特に自動車のダツシユパネルからフロア
ー全面にかけての成形防音材及び製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molded soundproofing material for vehicles, particularly automobiles, from the dash panel to the entire floor surface, and to a manufacturing method.

さらに詳細には、すぐれた遮音性と形状保持性を有する
自動車フロアー用内装防音材及び製造方法に関する。省
資源及び省エネルギーの観点から自動車の燃費削減を計
るための車輌の軽量化は急務であり、対策の一環として
フロントエンジン、フロントドライブ方式及び駆動部品
のアルミニウム化等が取り入れられ始めており、それら
によつて引き起こされるフロントフロアー部から車室内
に侵入して来る騒音、透過音への対策が緊急に求められ
ている。More specifically, the present invention relates to an interior sound insulating material for automobile floors having excellent sound insulating properties and shape retention properties, and a manufacturing method. There is an urgent need to reduce the weight of vehicles in order to reduce their fuel consumption from the viewpoint of resource and energy conservation, and as part of these measures, front engines, front drive systems, and the use of aluminum for drive parts are beginning to be adopted. There is an urgent need for countermeasures against the noise and transmitted sound that enters the vehicle interior from the front floor.

かかる要求に対する回答として最も簡便な方法は、従来
用いられて来ている瀝青系の制振材の厚みを増し重量効
果により遮音効果を求めんとするものであるが、この方
法では車輌の重量増となり車輌の軽量化対策にはなり得
ない。一方、他の方策として自動車のフロアーにクッシ
ョン材と組合せて載置する例えばタブゼットカーペット
の裏打ち層を薄膜のポリエチレン層に代えてエチレン−
酢ビ共重合体及び充てん剤からなる組成物をカーペット
製造工程において従来のものより厚く塗布したものを用
い遮音効果を期する方策が試みられている。The simplest method to meet these demands is to increase the thickness of the bituminous vibration damping material that has been used in the past and obtain a sound insulation effect through the weight effect. Therefore, it cannot be used as a measure to reduce the weight of vehicles. On the other hand, another method is to replace the backing layer of a Tabzet carpet, which is placed on the floor of an automobile in combination with cushioning material, with a thin polyethylene layer.
Attempts have been made to achieve a sound insulation effect by applying a composition comprising a vinyl acetate copolymer and a filler in a thicker layer than conventional carpets during the carpet manufacturing process.

しカルながらこの方策では該エチレン−酢ビ系組成物は
パイルの’’すぬけ’’（抜け落ち）防止のための裏打
ち材としてカーペットの裏面に塗布されるものであり、
その厚みには限界がある、従つて成形性が不十分で、特
に厚手のクッション材を用いる場合任意の凹凸形状に成
形し難い欠点がある。かかる実状に鑑み、本発明者らは
鋭意研究の結果本発明に至つたものであり、その目的と
するところは、１つには任意の形状に成形され、高い防
音性能を有する車輛用成形防音材を提供することにあり
、２つには、該車輛用成形防音材の製造方法を提供する
ことにある。However, in this method, the ethylene-vinyl acetate composition is applied to the back side of the carpet as a backing material to prevent the pile from ``sneaking'' (falling off).
There is a limit to its thickness, so the moldability is insufficient, and particularly when using a thick cushioning material, it is difficult to mold it into an arbitrary uneven shape. In view of these circumstances, the present inventors have arrived at the present invention as a result of intensive research, and one of the objectives is to provide a molded soundproofing material for vehicles that can be molded into any shape and has high soundproofing performance. The object of the present invention is to provide a molded soundproofing material for a vehicle, and a second object is to provide a method for manufacturing the molded soundproofing material for a vehicle.

即ち本発明の要旨とするところは、１つには、（イ）熱
可塑性合成樹脂フィルム裏打ちカーペット（ロ）ゴム質
物、瀝青系物質及び熱可塑性合成樹脂のなかから選ばれ
る１種もしくは２種以上と充てん剤とを主成分としてな
る遮音性シート状物（ハ）熱可塑性合成樹脂繊維または
熱可塑性合成樹脂粉末を１０〜５唾量％含有する嵩高性
不織布又はニードルフェルト等のクッション材を順次積
層し成形してなる車輛用成形防音材に存し、２つには、
（ハ）熱可塑性合成樹脂繊維または熱可塑性合成樹脂粉
末を１０〜５鍾量％含有する嵩高性不織布又はニードル
フェルト等のクッション材を該熱可塑性合成樹脂の軟化
温度以上に加熱された下金型の上に載置し、次いで該ク
ッション材の上に、（口）ゴム質物、瀝青系物質及び熱
可塑性樹脂のなかから選ばれる１種もしくは２種以上と
充てん剤とを主成分としてなる遮音性シート状物を、該
シート状物に予備加熱を加えて載置し、更に（イ）熱可
塑性樹脂フィルム裏打ちカーペットを、該カーペットの
裏打ち面に予備加熱を加えてあるいは加えずして順次載
置したのち上金型には冷却型を用いて圧縮成形を加える
車輛用成形防音材の製造方法に存する。That is, the gist of the present invention is as follows: (a) a carpet lined with a thermoplastic synthetic resin film; and (b) one or more types selected from rubbery substances, bituminous substances, and thermoplastic synthetic resins. Sound insulating sheet-like material consisting mainly of a filler and a filler (c) A cushioning material such as a bulky nonwoven fabric or needle felt containing 10 to 5% of thermoplastic synthetic resin fiber or thermoplastic synthetic resin powder is sequentially laminated. There are two types of molded soundproofing materials for vehicles:
(c) A lower mold in which a cushioning material such as a bulky nonwoven fabric or needle felt containing 10 to 5 weight percent of thermoplastic synthetic resin fiber or thermoplastic synthetic resin powder is heated to a temperature higher than the softening temperature of the thermoplastic synthetic resin. and then on the cushioning material, a sound insulating material whose main components are one or more selected from rubbery substances, bituminous substances, and thermoplastic resins and a filler. A sheet-like article is preheated and placed on the sheet-like article, and (a) a thermoplastic resin film-backed carpet is sequentially placed on the backing surface of the carpet with or without preheating. The method of manufacturing a molded soundproofing material for a vehicle includes then applying compression molding to the upper mold using a cooling mold.

本発明者らは先に、（イ）カーペットを上層とし、（ロ
）成形機能を有する遮音シート状物を中間層とし、吸音
性のある（ハ）クッション材を下層とした．積層物を圧
縮成形してなる車輛用成形防音材を提案した。The inventors first used (a) a carpet as the upper layer, (b) a sound-insulating sheet-like material with a molding function as the middle layer, and (c) a cushioning material with sound absorbing properties as the lower layer. We proposed a molded soundproofing material for vehicles made by compression molding a laminate.

本発明はクッション層にも成形機能を附与することによ
り成形性及び成形後の形状保持性を著しく改良したもの
であり、その結果成形性にとられれることなく遮音性シ
ート状物！の厚みを自由に設計出来る利点及び内装材と
しての適応の自由度が増加する利点が生じる。上層とし
て用いる、（イ）熱可塑性樹脂フィルム裏打ちカーペッ
トは、例えばポリエチレン樹脂裏打ちタフテツドカーペ
ツトを用い得る。合成繊維のくパイルを植毛材を用いて
目の粗い基布に植毛（ダクト）したのち熱溶融したポリ
エチレンを薄くラミネートするか、もしくはポリエチレ
ン樹脂粉末を散布したあと熱溶融せしめてパイルがぬけ
落ちるのを防止したものであり自動車フロアー用として
用いられているものであつて良い。本発明の成形防音材
の中間層として用いる遮音性シート状物は本発明の構成
上必須のものであり高遮音性能を有することはもとより
、成形性、フレキシビリテイ、耐熱性、耐寒性そして復
元性等の諸物性を有することが必要である。The present invention significantly improves moldability and shape retention after molding by imparting a molding function to the cushion layer, and as a result, a sound insulating sheet material is created without being affected by moldability! This has the advantage of being able to freely design the thickness of the material and increasing the degree of freedom in adapting it as an interior material. (a) The thermoplastic resin film-backed carpet used as the upper layer may be, for example, a polyethylene resin-backed tufted carpet. Either synthetic fiber piles are flocked (ducted) onto a coarse base fabric using flocking material, and then a thin layer of heat-fused polyethylene is laminated, or polyethylene resin powder is sprinkled and heat-melted to allow the pile to fall off. It can be used as a material for automobile floors. The sound-insulating sheet material used as the intermediate layer of the molded sound-insulating material of the present invention is essential for the structure of the present invention, and not only has high sound-insulating performance, but also has good moldability, flexibility, heat resistance, cold resistance, and recovery. It is necessary to have various physical properties such as physical properties.

これらの諸物性を満足するものであれば遮音性シート状
物のバインダー成分として天然ゴム、各種合成ゴム、１
各種再生ゴム等のゴム質物、ストレートアスファルト、
プロンアスフアルト等の瀝青系物質、及びポリエチレン
、ポリプロピレン、塩化ビニル、酢酸ビニル、塩ビー酢
ビ共重合体、エチレンー酢ビ共重合体等のなかから選ば
れる１種もしくは２種以上の混合物を用い得る。該バイ
ンダー成分に配合する充てん剤としては、炭酸カルシウ
ム、炭酸マグネシウム、クレー、タルク、硫酸バリウム
、アスベスト等を用い得る。更に老化防止剤、分散剤、
軟化剤等の添加剤を配合したものであつて良い。バイン
ダーと充てん剤との配合比は１５：８５〜５０：５０、
好ましくは２５：７５〜３５：６５である。As long as these physical properties are satisfied, natural rubber, various synthetic rubbers, 1
Rubber materials such as various recycled rubber, straight asphalt,
One or a mixture of two or more selected from bituminous substances such as prone asphalt, polyethylene, polypropylene, vinyl chloride, vinyl acetate, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, etc. can be used. . As the filler to be added to the binder component, calcium carbonate, magnesium carbonate, clay, talc, barium sulfate, asbestos, etc. can be used. In addition, anti-aging agents, dispersants,
It may contain additives such as a softener. The blending ratio of binder and filler is 15:85 to 50:50,
Preferably it is 25:75 to 35:65.

バインダーに充てん剤を配合した主成分に加える添加剤
類は、主成分１００重量部に対して０．５〜１０重量部
、好ましくは１〜５重量部配合される。前記原料をミキ
シングロール、パンバリーミキサー、ニーダー、コーニ
ーダー等の混練機にて混合したのちカレンダーロールに
て任意の厚みに圧延し、更に所望形状に裁断される。The additives added to the main component, which is a binder and a filler, are added in an amount of 0.5 to 10 parts by weight, preferably 1 to 5 parts by weight, per 100 parts by weight of the main component. The raw materials are mixed using a kneading machine such as a mixing roll, a Panbury mixer, a kneader, or a co-kneader, then rolled to a desired thickness using a calendar roll, and further cut into a desired shape.

裁断クズはリサイクルにより再生に回される。遮音性シ
ート状物は厚みは約０．５〜８７Ｔ＄Ｌ１面密度は約１
〜１０ｋ９／ｄのものが好ましく用いられる。The cut waste is recycled. The thickness of the sound insulating sheet material is approximately 0.5 to 87 T$L1, and the area density is approximately 1
~10k9/d is preferably used.

本発明の遮音性シート状物はエンジンルーム内からの騒
音の透過径路を主体に適用部位の形状に相応するように
トリムされる。裁断する遮音性シート状物の総面積は部
品毎にその部品面積の３０％以上、好ましくは４０〜８
０％である。３０％以下であると遮音効果を顕現し得な
い。The sound insulating sheet material of the present invention is trimmed so as to correspond to the shape of the area to which it is applied, mainly for the transmission path of noise from inside the engine room. The total area of the sound insulating sheet material to be cut is 30% or more of the area of each part, preferably 40 to 8
It is 0%. If it is less than 30%, no sound insulation effect can be achieved.

本発明に用いるクッション材は、嵩高性不織布もしくは
ニードルフェルト等で良く、嵩高性不織布は動物性、植
物性、鉱物性不連続繊維材料の１種もしくは２種以上よ
りなる混合物および熱硬化性樹脂よりなる結合剤を主体
としてなり、それ自体公知の嵩高性不織布の製造方法よ
り得ることが出来るが、結合剤をほぼ硬化せしめて吸音
性およびクッション性を有する状態となしておくことは
大切である。The cushioning material used in the present invention may be a bulky nonwoven fabric or needle felt, and the bulky nonwoven fabric is made of a mixture of one or more of animal, vegetable, and mineral discontinuous fiber materials and a thermosetting resin. The fabric is mainly composed of a binder, which can be obtained by a known method for manufacturing bulky nonwoven fabrics, but it is important that the binder is almost cured to have sound absorbing and cushioning properties.

ニードルフェルトは、動物性、植物性及び鉱物性の不連
続繊維材料の１種もしくは２種以上の混合物よりなるフ
リースにニードルパンチを加えて得たものであつて良い
。該状態における嵩高性不織布及びニードルフェルトの
厚さは８〜５０ＴＬ，／７ＴＬであり、面密度は０．４
〜４ｋ９／ｃイの範囲にあることが好ましい。本発明に
おいてこれらの嵩高性不織布やニードルフェルトに全重
量に基いて１０〜５唾量％の熱可塑性合成樹脂繊維又は
粉末を含有せしめることを必須要件とするもので、含有
せしめる熱可塑性合成樹脂繊維または粉末の素材として
は、ポリビニル●アセテート、塩化ビニル、塩化ポリビ
ニリデン、アセテート、トリアセテート等であつても良
い。Needle felt may be obtained by needle punching a fleece made of one or a mixture of animal, vegetable and mineral discontinuous fiber materials. The thickness of the bulky nonwoven fabric and needle felt in this state is 8 to 50TL, /7TL, and the areal density is 0.4
It is preferably in the range of ~4k9/c. In the present invention, it is an essential requirement that these bulky nonwoven fabrics and needle felts contain thermoplastic synthetic resin fibers or powder in an amount of 10 to 5% based on the total weight. Alternatively, the powder material may be polyvinyl acetate, vinyl chloride, polyvinylidene chloride, acetate, triacetate, or the like.

混入量が１鍾量％以下の場合形状保持性が十分でなく、
５唾量％以上の場合クッション性、フイツト性及び吸音
性が著しく低下するため好ましくない。次に本発明の製
造方法について説明する。If the mixed amount is less than 1% by weight, shape retention is insufficient,
If the saliva content is 5% or more, the cushioning properties, fitting properties, and sound absorption properties are significantly reduced, which is not preferable. Next, the manufacturing method of the present invention will be explained.

前記した熱可塑性合成樹脂成分を含有する嵩高性不織布
又はニードルフェルト等の加熱加圧成形性を有するクッ
ション材を、該クッション材に含有せしめた熱可塑性合
成樹脂の熱軟化温度以上に加熱された成形機の下金型の
上に載置し、次いで遮音性シート状物の両面を予熱板（
加熱状態の鉄板）又は遠赤外ランプ等の加熱手段を用い
て８０〜１５０′Ｃにて約２０〜１８［相］間の予熱を
加えたものをクッション材の上に載置し、引き続きカー
ペット裏．打ち面に同様の方法で予熱を加え、あるいは
予熱を加えずそのままの状態で裏打ち面と遮音性シート
面が接する様に載積したのち直ちに成形金型の上型を下
降せしめ約１〜１００ｋ９／Ｃｒｌの圧力でゼロブレス
状態にて約２鰍〜１８鰍間保ち圧縮成形を．行う。Molding in which a cushioning material having heat-pressing moldability such as a bulky nonwoven fabric or needle felt containing the above-mentioned thermoplastic synthetic resin component is heated to a temperature higher than the heat softening temperature of the thermoplastic synthetic resin containing the cushioning material. Place it on the lower mold of the machine, then place both sides of the sound insulating sheet on a preheating plate (
The material is preheated to about 20 to 18 [phases] at 80 to 150'C using a heating means such as a heated iron plate or a far infrared lamp, and then placed on the cushioning material, and then placed on the carpet. back. Preheat the stamping surface in the same way, or load it as it is without preheating so that the backing surface and the sound insulation sheet surface are in contact, and then immediately lower the upper mold of the molding die to about 1 to 100 k9/ Compression molding with a pressure of Crl and zero breath maintaining a spacing of about 2 to 18 pieces. conduct.

本発明において上型は冷金形であつて良い。金型から取
り出したのち最終裁断を経て本発明になる車輛用成形防
音材を得る。本発明においては中間層として狭置せしめ
る遮音性シート状物を必ずしも部品全面に施す必要は・
なく、騒音の透過径路に従い重点的に裁断片を狭置せし
めても良い、更に部品全面に遮音性シート状物を狭置し
た上で更に重点部位に遮音性シート状物の裁断片を複数
枚狭置せしめても良い。In the present invention, the upper mold may be a cold mold. After being removed from the mold, the molded soundproofing material for vehicles of the present invention is obtained through final cutting. In the present invention, it is not necessarily necessary to apply the sound insulating sheet material to be placed as an intermediate layer over the entire surface of the component.
Alternatively, the shredded pieces may be narrowly placed in a focused manner according to the noise transmission path.Furthermore, the sound-insulating sheet material may be narrowly placed over the entire surface of the part, and then multiple pieces of the sound-insulating sheet-like material may be placed in the important areas. It may be placed in a narrow space.

本発明になる成形防音材は、中間層のシート状物が有す
る遮音機能とクッション材の有する吸音機能との相乗効
果により、すぐれた防音性能を顕現し得、しかもすぐれ
た成形性及び形状保持性により自動車の内装材して好適
に用い得るものである。本発明の成形防音材はダツシユ
からフロントフロアーにかけて好適に用い得るものであ
る。以下に実施例を挙げ本発明のより詳細な理解に供す
る。当然のことながら本発明は以下の実施例ａのみに限
定されるものでないことは言うまでもないことである。
実施例 タイヤ再生ゴム１０呼量部、低密度ポリエチレンパウダ
ー１５重量部、重質炭酸カルシウム２７０重量部、ロジ
ン１踵量部及びプロセスオイル１鍾量部をミキシングロ
ールにて混練後、カレンダーロールを通して約１．２ｍ
／Ｒｒｌ．厚で面密度１．７ｋ９／７Ｔ１の遮音性シー
ト状物を得た。The molded soundproofing material of the present invention can exhibit excellent soundproofing performance due to the synergistic effect of the soundproofing function of the intermediate layer sheet-like material and the soundabsorbing function of the cushion material, and has excellent moldability and shape retention. Therefore, it can be suitably used as an interior material for automobiles. The molded soundproofing material of the present invention can be suitably used for everything from the dash to the front floor. Examples are given below to provide a more detailed understanding of the present invention. It goes without saying that the present invention is not limited to the following example a.
Example 10 parts by weight of recycled tire rubber, 15 parts by weight of low-density polyethylene powder, 270 parts by weight of heavy calcium carbonate, 1 part by weight of rosin and 1 part by weight of process oil were kneaded using a mixing roll, and then passed through a calender roll and kneaded to approx. 1.2m
/Rrl. A sound insulating sheet material having a thickness and an areal density of 1.7k9/7T1 was obtained.

反毛３鍾量部、落綿３呼量部、塩化ビニリデン繊維（軟
化温度約９５℃）２唾量部を開繊混合し融点１５０℃で
硬化温度１８０℃のノボラック型粉末フェノール樹脂２
喧量部を散布混合し、フリース形成機でフリースとなし
た後１９０℃の加熱炉を通して厚さ２０７ｎ／７Ｔ１．
、面密度９００ｙ／ｄの嵩高性不織布を得た。2 parts of novolac type powdered phenolic resin with a melting point of 150°C and a curing temperature of 180°C by opening and mixing 3 parts of recycled wool, 3 parts of fallen cotton, and 2 parts of vinylidene chloride fiber (softening temperature approximately 95°C).
The bulk part is mixed and mixed, and after being made into fleece with a fleece forming machine, it is passed through a heating furnace at 190°C to a thickness of 207n/7T1.
A bulky nonwoven fabric with an areal density of 900 y/d was obtained.

約１１０゜Ｃに加熱した成形機の下金型上に前記嵩高性
不織布を載せ、次いで自動車のフロントフロアーからダ
ツミユパネルにかけての形状に即してあらかじめ裁断し
た遮音性シート状物に赤外線ランプを用いて１１００Ｃ
で２分間の予備加熱を加えてのち嵩高性不織布上に載積
したのち更に別途、フロントフロアーライトからダツシ
ユパネル右半分にかけての形状に即してあらかじめ裁断
した遮音性シート状物に赤外線ランプを用いて１１０℃
で２分間の予備加熱を加えてのち載積し部分的に遮音性
シート状物を２枚重ねた状態となし、引き続きポリエチ
レンで裏打ちされたタフテツドカーペツトをすみやかに
載積したのち直ちに上金型を下降せしめて１０ｋ９／Ｃ
ｌｔの加圧力にてゼロブレス状態に２分間保ち加圧成形
を行つた。The bulky nonwoven fabric was placed on the lower mold of a molding machine heated to about 110°C, and then an infrared lamp was used to cut a sound-insulating sheet material that had been cut in advance to fit the shape of the car's front floor to the Datsumiyu panel. 1100C
After preheating it for 2 minutes and placing it on a bulky non-woven fabric, an infrared lamp was used to cut a sound-insulating sheet material that had been cut in advance to fit the shape from the front floor light to the right half of the dash panel. 110℃
After preheating for 2 minutes, the carpet is loaded to form two layers of sound-insulating sheet material, followed by a tufted carpet lined with polyethylene. Lower the mold to 10k9/C
Pressure molding was carried out at a pressure of lt and maintained in a zero-press state for 2 minutes.

金型より取り出してのちフロントフロアーからダツシユ
パネルにかけての形状に即して裁断し本発明になる車輛
用成形防音材を得た。本発明により得た車輛用成形防音
材は形状保持性に極めて優れており、又実車に装着し実
車走行により騒音の低下度合を測定したところ約３ｄＢ
の抵下効果が認められ防音性能にも極めて優れているこ
とが明らかとなつた。After taking it out from the mold, it was cut according to the shape from the front floor to the dash panel to obtain a molded soundproofing material for a vehicle according to the present invention. The molded soundproofing material for vehicles obtained according to the present invention has extremely excellent shape retention, and the degree of noise reduction measured by installing it on an actual vehicle and driving the vehicle was approximately 3 dB.
It became clear that the noise reduction effect was observed and that the soundproofing performance was also extremely excellent.

Claims (1)

【特許請求の範囲】[Claims] １ （イ）熱可塑性合成樹脂フィルム裏打ちカーペット
（ロ）ゴム質物、瀝青系物質及び熱可塑性合成樹脂のな
かから選ばれる１種もしくは２種以上と充てん剤とを主
成分としてなる遮音性シート状物（ハ）熱可塑性合成樹
脂繊維または熱可塑性合成樹脂粉末を１０〜５０重量％
含有する嵩高性不織布又はニードルフェルト等のクッシ
ョン材を順次積層し成形してなる車輛用成形防音材２
（ハ）熱可塑性合成樹脂繊維または熱可塑性合成樹脂粉
末を１０〜５０重量％含有する嵩高性不織布又はニード
ルフェルト等のクッション材を該熱可塑性合成樹脂の軟
化温度以上に加熱された下金型の上に載置し、次いで該
クッション材の上に、（ロ）ゴム質物、瀝青系物質及び
熱可塑性樹脂のなかから選ばれる１種もしくは２種以上
と充てん剤とを主成分としてなる遮音性シート状物を、
該シート状物に予備加熱を加えて載置し、更に（イ）熱
可塑性樹脂フィルム裏打ちカーペットを、該カーペット
の裏打ち面に予備加熱を加えてあるいは加えずして順次
載置したのち上金型には冷金型を用いて圧縮成形を加え
ることを特徴とする車輛用成形防音材の製造方法。1. (a) Thermoplastic synthetic resin film-backed carpet (b) Sound-insulating sheet-like material whose main components are one or more selected from rubber materials, bituminous materials, and thermoplastic synthetic resins and a filler. (c) 10 to 50% by weight of thermoplastic synthetic resin fiber or thermoplastic synthetic resin powder
Molded soundproofing material 2 for vehicles made by sequentially laminating and molding cushioning materials such as bulky nonwoven fabric or needle felt containing
(c) A cushioning material such as a bulky nonwoven fabric or needle felt containing 10 to 50% by weight of thermoplastic synthetic resin fiber or thermoplastic synthetic resin powder is placed in a lower mold heated to a temperature higher than the softening temperature of the thermoplastic synthetic resin. (b) a sound insulating sheet mainly composed of one or more selected from rubbery substances, bituminous substances, and thermoplastic resins and a filler; something like that,
The sheet material is preheated and placed, and (a) a thermoplastic resin film-backed carpet is sequentially placed on the backing surface of the carpet with or without preheating, and then the upper mold is placed. A method for manufacturing a molded soundproofing material for vehicles, characterized by adding compression molding using a cold mold.