JPH0794161B2 - Dash silencer manufacturing method using coating agent - Google Patents
Dash silencer manufacturing method using coating agentInfo
- Publication number
- JPH0794161B2 JPH0794161B2 JP2168495A JP16849590A JPH0794161B2 JP H0794161 B2 JPH0794161 B2 JP H0794161B2 JP 2168495 A JP2168495 A JP 2168495A JP 16849590 A JP16849590 A JP 16849590A JP H0794161 B2 JPH0794161 B2 JP H0794161B2
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- sound insulation
- sound
- sheet
- molding
- 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.)
- Expired - Fee Related
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、塗布材料を遮音材に利用した防音材及びその
製造方法に関する。TECHNICAL FIELD The present invention relates to a soundproof material using a coating material as a sound insulating material and a method for producing the same.
従来より、遮音の用途として使用されるシート状の遮音
材は公知である。この遮音シートはゴム、合成樹脂、充
填材、必要に応じて各種の添加剤等を添加して、混合、
混練され、公知の加工機によりシート状に成形されて、
適宜裁断、あるいは型抜き、立体成形等により必要な形
状に成形されて、遮音の目的にて輸送機械、工業プラン
ト、建築等産業界に広く使用されている。BACKGROUND ART Conventionally, a sheet-shaped sound insulation material used for sound insulation has been known. This sound-insulating sheet is mixed with rubber, synthetic resin, filler, and various additives as necessary, and mixed.
Kneaded, molded into a sheet by a known processing machine,
It is appropriately cut and molded into a required shape by die-cutting, three-dimensional molding or the like, and is widely used in industrial fields such as transportation machinery, industrial plants, and construction for the purpose of sound insulation.
ところで、シート状遮音材はそれ単独でもある程度の防
音性能を有するものであるが、例えば自動車のエンジン
ルームと乗員室を隔てるダッシュパネルに防音対策を施
す場合にはシート状遮音材のみでは防音対策は充分とは
言い難く、シート状遮音材に加えて、吸音性能を有す
る、合成繊維、天然繊維等の解織繊維にフェノール樹脂
等を含浸させた嵩高性フェルトや、ガラス繊維、あるい
は各種合成フォーム材を成形積層して、任意の形状に加
工して防音材として供している。この場合、シート状遮
音材は当初ロール状、あるいは適宜な大きさの四角形シ
ート状として供給されるのが普通であり、これを上記例
の自動車ダッシュパネルの形状に合わせて成形すれば、
必ず不要のトリムかすが発生してしまう。また、シート
状遮音材はある程度の剛性を持っているため凹凸の大き
な形状に合わせて成形しようとする場合には、１度の加
熱加工成形では充分な形状が得られず、このため嵩高性
フェルト等と積層する前に、あらかじめシート状遮音材
単独で加熱成形あるいは真空成形といった手段により加
工しておく必要がある。このような前加工無しで嵩高性
フェルトと積層しようとする場合には、シート状遮音材
を成形金型に載置する直前に、ヒートパネル等により予
熱をして形状加工性を良好にしておく必要がある。ま
た、嵩高性フェルトに部分的にシート状遮音材を貼付け
て防音対策を行いたい場合、また、両者別々に成形した
後で載置したい場合には、適当な接着剤により接着する
工程が必要である。By the way, a sheet-shaped sound insulation material has a certain degree of sound insulation performance by itself, but, for example, when a sound insulation measure is applied to a dash panel that separates an automobile engine room and a passenger compartment, the sheet sound insulation material alone is not effective. It is hard to say that it is sufficient, but in addition to sheet-like sound insulation material, bulky felt, synthetic fiber, woven fiber such as natural fiber impregnated with phenolic resin, glass fiber, or various synthetic foam materials that have sound absorbing performance. Is molded and laminated, processed into an arbitrary shape, and provided as a soundproof material. In this case, the sheet-shaped sound insulation material is usually initially supplied in the form of a roll, or a square sheet of an appropriate size, and if this is molded according to the shape of the automobile dash panel of the above example,
There will always be unnecessary trim residue. In addition, since the sheet-shaped sound insulation material has a certain degree of rigidity, a sufficient shape cannot be obtained by one-time heat-processing and molding when trying to mold it to a shape with large irregularities. It is necessary to process the sheet-shaped sound insulation material alone by means such as heat molding or vacuum forming before laminating with the above. When stacking with a bulky felt without such pre-processing, preheat by a heat panel or the like to make the shape processability good just before placing the sheet-shaped sound insulation material on the molding die. There is a need. Also, if you want to apply soundproofing measures by partially sticking a sheet-shaped sound insulation material to the bulky felt, or if you want to place it after molding both separately, a step of bonding with an appropriate adhesive is required. is there.
一例としてダッシュパネルの防音材を挙げたが、自動車
に限らず、吸音材とともに積層して必要形状に成形加工
して防音材とする場合には、現在のシート状遮音材は上
記のような課題を持っている、というのが現状である。Although the soundproof material for the dash panel is given as an example, it is not limited to automobiles, and when it is laminated with a sound absorbing material and processed into a required shape to make a soundproof material, the current sheet-shaped sound insulating material has the above-mentioned problems. The current situation is to have
かかる現状に鑑み、本発明者等は鋭意研究の結果、塗布
剤を利用した防音材と、その製造方法の開発に成功した
ものである。In view of the present situation, as a result of earnest research, the present inventors have succeeded in developing a soundproofing material using a coating agent and a manufacturing method thereof.
しかして本発明の要旨は、 1.成形金型に、熱可塑性樹脂、もしくは熱可塑性樹脂に
充填材を加えた配合物を加熱により塗布し、これに未成
形の、もしくは成形済の嵩高性フェルトを載置積層し、
成形金型を閉じて加圧成形することを特徴とする、塗布
剤を利用したダッシュサイレンサーの製造方法。Therefore, the gist of the present invention is: 1. A thermoplastic resin, or a mixture of a thermoplastic resin and a filler is applied to a molding die by heating, and an unmolded or molded bulky felt is applied to this. Placed and stacked,
A method for producing a dash silencer using a coating agent, which comprises closing a molding die and performing pressure molding.
2.成形金型に、熱可塑性樹脂、もしくは熱可塑性樹脂に
充填材を加えた配合物を加熱により塗布し、成形金型を
閉じてポリウレタンフォーム用反応液を注入し、加熱す
ることを特徴とする、塗布剤を利用したダッシュサイレ
ンサーの製造方法。2.A characteristic is that a thermoplastic resin or a mixture of a thermoplastic resin and a filler is applied to a molding die by heating, the molding die is closed, a reaction liquid for polyurethane foam is injected, and heating is performed. A method for manufacturing a dash silencer using a coating agent.
に存する。Exist in.
遮音層として塗布される熱可塑性樹脂を塗布する際には
アプリケータ等の塗装機によって、塗布できる温度に加
熱されて塗布されるが、常温に冷却すると同時に固化す
る。しかし加熱されれば熱再活性化して再び接着性能を
有する。When the thermoplastic resin applied as the sound insulation layer is applied, it is heated to a temperature at which it can be applied by a coating machine such as an applicator, but is solidified at the same time as it is cooled to room temperature. However, when heated, it is reactivated by heat and has adhesive properties again.
使用できる熱可塑性樹脂としては、エチルセルロース、
酢酸ビニル樹脂及びその誘導体、ポリエチレン、エチレ
ン−酢酸ビニル共重合体、ブチルメタクリル樹脂、ポリ
スチレン及び共重合体、ポリイソブチレン、石油樹脂、
アスファルト等の瀝青質物、ポリプロピレン、ポリアミ
ド樹脂、ポリエステル樹脂等が例示できる。The thermoplastic resin that can be used is ethyl cellulose,
Vinyl acetate resin and its derivatives, polyethylene, ethylene-vinyl acetate copolymer, butyl methacrylic resin, polystyrene and copolymer, polyisobutylene, petroleum resin,
Examples thereof include bituminous materials such as asphalt, polypropylene, polyamide resin, polyester resin and the like.
塗布する熱可塑性樹脂自身が充分な高比重である場合に
は、熱可塑性樹脂のみで遮音層を形成できるが、遮音性
能が不足の場合には必要に応じて、各種充填材を併用す
ることにより遮音性能を補完することも可能である。使
用できる充填材としては従来公知の炭酸カルシウム、硫
酸バリウム、クレイ、タルク、マイカといった粉状充填
材の他、特に遮音材としての性能を顕現するために亜鉛
華、亜鉛末、鉛粉末、鉄粉末、銅粉末、ブロンズ粉末、
アルミニウム粉末等の各種金属粉末を含むことが好まし
い。また従来公知の粉状充填材を使用する場合には、硫
酸バリウム等比較的高比重の顔料類を選択することが好
ましい。When the thermoplastic resin to be applied itself has a sufficiently high specific gravity, the sound insulation layer can be formed only by the thermoplastic resin, but if the sound insulation performance is insufficient, various fillers may be used in combination if necessary. It is also possible to supplement the sound insulation performance. Fillers that can be used include conventionally known powdery fillers such as calcium carbonate, barium sulfate, clay, talc, and mica, and zinc powder, zinc dust, lead powder, and iron powder in order to reveal the performance as a sound insulating material. , Copper powder, bronze powder,
It is preferable to include various metal powders such as aluminum powder. When a conventionally known powdery filler is used, it is preferable to select a pigment having a relatively high specific gravity such as barium sulfate.
以下に、本発明になる防音材の製造方法について説明す
る。The method for manufacturing the soundproof material according to the present invention will be described below.
コールドプレス用の成形金型に、熱可塑性樹脂をアプリ
ケータ等の従来公知の塗装方法にて、１〜10kg/m2塗装
する。1kg/m2未満であると、所望の遮音効果が得られ
ず、10kg/m2を越えると、塗布量に比例して遮音効果は
向上せず、重量増加、コスト上昇の点において不利であ
る。充填材を併用する場合には、熱可塑性樹脂を塗布後
適宜選択された充填材を均一に散布して、再び熱可塑性
樹脂を塗布して遮音層を形成する。この時、型の全面に
塗装しても良いし、必要箇所に限って塗装することも可
能である。1-10 kg / m 2 of thermoplastic resin is applied to a cold pressing molding die by a conventionally known coating method such as an applicator. If it is less than 1 kg / m 2 , the desired sound insulation effect cannot be obtained, and if it exceeds 10 kg / m 2 , the sound insulation effect does not improve in proportion to the coating amount, which is disadvantageous in terms of weight increase and cost increase. . When a filler is used in combination, a thermoplastic resin is applied, and then a properly selected filler is evenly dispersed, and the thermoplastic resin is applied again to form a sound insulating layer. At this time, the entire surface of the mold may be painted, or only the necessary parts may be painted.
さらに、あらかじめ成形済の嵩高性フェルト、あるいは
未成形の嵩高性フェルトを熱可塑性樹脂の塗装面の上に
積層載置して、上金型を下降させ、適宜圧力にて、適宜
時間加圧成形をする。加圧力、及び時間は、嵩高性フェ
ルト形状付与のために前加工の有無、嵩高性フェルトの
厚さ、圧縮度、生産性等により決められるが、塗布した
熱可塑性樹脂が接着能を有する間に吸音層を積層成膜す
ることは必須条件である。In addition, pre-molded bulky felt or unmolded bulky felt is laminated and placed on the surface coated with the thermoplastic resin, the upper mold is lowered, and pressure molding is performed for an appropriate time at an appropriate pressure. do. The pressing force and time are determined depending on the presence or absence of pre-processing for imparting the bulky felt shape, the thickness of the bulky felt, the degree of compression, the productivity, etc., while the applied thermoplastic resin has adhesive ability. It is an indispensable condition that the sound absorbing layers are laminated and formed.
吸音層にポリウレタンフォームを使用した場合には、モ
ールディングフォーム型に熱可塑性樹脂を塗装し、充填
材を均一に散布する。その後再び熱可塑性樹脂を塗布し
て遮音層を形成する。インジェクションモールディング
法により製造する場合、型を閉じた後、ポリウレタンフ
ォーム用の反応液が注入される。反応液は、イソシアネ
ートと、ポリオールとの２液に分れており、さらにポリ
オールには整泡剤、発泡剤、触媒、着色剤等が含まれ
る。注入後はフォーム材成形に必要な加熱がなされるが
この時熱可塑性樹脂が熱再活性化して吸音層に積層接着
することが必須条件である。When polyurethane foam is used for the sound absorbing layer, a thermoplastic resin is applied to the molding foam type and the filler is evenly dispersed. After that, the thermoplastic resin is applied again to form the sound insulation layer. In the case of manufacturing by the injection molding method, the reaction liquid for polyurethane foam is injected after closing the mold. The reaction liquid is divided into two liquids of isocyanate and polyol, and the polyol further contains a foam stabilizer, a foaming agent, a catalyst, a colorant and the like. After the injection, heating necessary for forming the foam material is performed. At this time, it is an essential condition that the thermoplastic resin is thermally reactivated and laminated and adhered to the sound absorbing layer.
型に塗装された熱可塑性樹脂は間に散布した充填材と共
に、嵩高性フェルト、ポリウレタンフォーム材等の吸音
層に接着積層して遮音層を形成し、全体として優れた防
音性能を顕現する。The thermoplastic resin coated on the mold is adhesively laminated with a filler dispersed between the mold and a sound absorbing layer such as a bulky felt or polyurethane foam material to form a sound insulating layer, and exhibits excellent sound insulating performance as a whole.
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のみに限定され
るものではない。Examples will be given below to provide a more detailed understanding of the present invention.
Naturally, the invention is not limited to the following examples.
実施例１ エチレン酢酸ビニル共重合体樹脂をアプリケータにより
平均0.5kg/m2塗布しこの塗布面に硫酸バリウム（堺化学
工業社製）30重量部、鉛末（菊池色素工業社製）５重量
部からなる混合充填材を平均0.5kg/m2散布し、さらに再
びエチレン酢酸ビニル共重合体樹脂を平均0.5kg/m2塗布
した。該塗布面に、厚さ30mmのフェノール樹脂を含有す
る嵩高性フェルトを積層載置して上型を下降させ、3kg/
m2の加圧力で90秒間加圧成形した。フェルト吸音層の片
側にエチレン酢酸ビニル共重合体樹脂による遮音層が積
層された自動車ダッシュサイレンサー１を得た。Example 1 An ethylene vinyl acetate copolymer resin was applied with an applicator at an average of 0.5 kg / m 2, and 30 parts by weight of barium sulfate (made by Sakai Chemical Industry Co., Ltd.) and 5 parts by weight of lead powder (made by Kikuchi Dye Industry Co., Ltd.) were coated on the coated surface. the mixture filler consisting of parts average 0.5 kg / m 2 by spraying, further ethylene-vinyl acetate copolymer resin and averaged 0.5 kg / m 2 coating again. On the coated surface, a bulky felt containing a phenol resin having a thickness of 30 mm is stacked and placed, and the upper die is lowered to 3 kg /
Pressure molding was performed for 90 seconds with a pressing force of m 2 . An automobile dash silencer 1 was obtained in which a sound insulation layer made of an ethylene vinyl acetate copolymer resin was laminated on one side of the felt sound absorption layer.
実施例２ 実施例１と同様の配合による、エチレン酢酸ビニル共重
合体樹脂／充填材／エチレン酢酸ビニル共重合体樹脂を
ポリウレタンフォームのインジェクションモールディン
グ用金型の下型全面に合計平均1.5kg/m2塗布し、金型を
閉じた。しかる後に注入口よりTDI/MDI混合イソシアネ
ート（三洋化成工業社製）30重量部と、ポリエーテルポ
リオール（三洋化成工業社製）100重量部、整泡剤（シ
リコンオイル）0.5重量部、発泡剤（水）0.5重量部、反
応触媒0.5重量部、着色剤２重量部からなるポリオール
成分を注入し、120℃で15分の加熱を加えた。ポリウレ
タンウォーム材による吸音層の片側にエチレン酢酸ビニ
ル共重合体樹脂による遮音層が積層された自動車ダッシ
ュサイレンサー２を得た。Example 2 An ethylene vinyl acetate copolymer resin / filler / ethylene vinyl acetate copolymer resin having the same composition as in Example 1 was added on the entire lower surface of the mold for injection molding of polyurethane foam to an average of 1.5 kg / m in total. 2 applied and the mold was closed. Then, from the injection port, 30 parts by weight of TDI / MDI mixed isocyanate (manufactured by Sanyo Chemical Industry Co., Ltd.), 100 parts by weight of polyether polyol (manufactured by Sanyo Chemical Co., Ltd.), 0.5 part by weight of foam stabilizer (silicon oil), foaming agent ( 0.5 parts by weight of water, 0.5 parts by weight of the reaction catalyst, and 2 parts by weight of the colorant were injected, and heating was performed at 120 ° C. for 15 minutes. An automobile dash silencer 2 having a sound absorbing layer made of a polyurethane worm material and a sound insulating layer made of an ethylene vinyl acetate copolymer resin laminated on one side of the sound absorbing layer was obtained.
比較例１ スチレン−ブタジエンゴム、再生ゴム、合成樹脂、充填
材を混合分散、シート状に加工した、従来公知の厚さ3m
mのゴム系遮音シートを真空成形機により自動車ダッシ
ュ部用に成形し、これを実施例１と同様に成形金型の下
型に載置し、厚さ30mmのフェノール樹脂を含有する嵩高
性フェルトを積層載置して上型を下降させ、3kg/cm2の
加圧力で90秒間加熱加圧成形した。フェルト吸音層の片
側にゴム系遮音層が積層された自動車ダッシュサイレン
サー３を得た。Comparative Example 1 Styrene-butadiene rubber, recycled rubber, synthetic resin, and filler are mixed and dispersed and processed into a sheet shape, which has a conventionally known thickness of 3 m.
A m-type rubber sound-insulating sheet was formed by a vacuum forming machine for automobile dash parts, placed on the lower die of the forming die in the same manner as in Example 1, and a bulky felt containing a 30 mm thick phenol resin. Was placed in a layered manner, the upper mold was lowered, and hot press molding was performed for 90 seconds with a pressing force of 3 kg / cm 2 . An automobile dash silencer 3 having a rubber sound insulating layer laminated on one side of the felt sound absorbing layer was obtained.
比較例２ スチレン−ブタジエンゴム、再生ゴム、合成樹脂、充填
材を混合分散、シート状に加工した、従来公知の厚さ3m
mのゴム系遮音シートを真空成形機により自動車ダッシ
ュ部用に成形し、これを実施例２と同様にウレタンモー
ルディング金型の下型に載置し、金型を閉じて注入口よ
りTDI/MDI混合イソシアネート（三洋化成工業社製）30
重量部と、ポリエーテルポリオール（三洋化成工業社
製）100重量部、整泡剤（シリコンオイル）0.5重量部、
発泡剤（水）0.5重量部、反応触媒0.5重量部、着色剤２
重量部からなるポリオール成分を注入し、120℃で15分
の加熱を加えた。ポリウレタンフォーム材による吸音層
の片側にゴム系遮音シートによる遮音層が積層された自
動車ダッシュサイレンサー４を得た。Comparative Example 2 Styrene-butadiene rubber, recycled rubber, synthetic resin, and filler are mixed and dispersed, and processed into a sheet shape, a conventionally known thickness of 3 m.
A rubber sound-insulating sheet of m was molded by a vacuum molding machine for automobile dash parts, and this was placed on the lower mold of the urethane molding mold as in Example 2, and the mold was closed and TDI / MDI was injected from the injection port. Mixed isocyanate (manufactured by Sanyo Chemical Industries) 30
Parts by weight, 100 parts by weight of polyether polyol (manufactured by Sanyo Kasei Co., Ltd.), 0.5 parts by weight of foam stabilizer (silicon oil),
0.5 parts by weight of foaming agent (water), 0.5 parts by weight of reaction catalyst, colorant 2
A polyol component consisting of parts by weight was injected, and heating at 120 ° C. for 15 minutes was applied. An automobile dash silencer 4 was obtained in which a sound insulation layer made of a rubber type sound insulation sheet was laminated on one side of a sound absorption layer made of a polyurethane foam material.
試験方法 各サイレンサーを小型乗用車のダッシュ部に取り付け、
車室内乗員の耳位置に取付けたマイクによりエンジン音
を測定した。Test method Attach each silencer to the dash of a small passenger car,
Engine sound was measured by a microphone attached to the occupant's ear position.
次に、サイレンサーを取りはずして、遮音対策を施して
いない状態として、同様にしてエンジン音を測定し、サ
イレンサー未装着時−サイレンサー装着時の差引騒音レ
ベルより、遮音性能を評価した。Next, the engine sound was measured in the same manner with the silencer removed and no sound insulation measures were taken, and the sound insulation performance was evaluated from the subtracted noise level when the silencer was not installed-when the silencer was installed.
結果 〔発明の効果〕 本発明による塗布剤を利用した防音材は、従来公知の遮
音シートを使用した防音材と比較して、同等以上の防音
性能を有し、しかも本発明による防音材の製造方法によ
れば従来発生した、遮音シートのトリムかすは発生せ
ず、省資源に役立つとともに、防音材製造の際の遮音シ
ートの成形工程もしくは成形のための予熱工程を省略で
きる、遮音層積層の工程が塗布剤の塗装となるため、塗
装ロボットによる自動化が可能となる、遮音塗布剤が熱
可塑性樹脂であるため塗布後は冷却と同時に塗膜となる
ため、乾燥のための加熱を必要としないからコールドプ
レスに適用できる、熱可塑性樹脂を部分的に塗布するこ
とにより、重点的、合理的遮音対策をとることができる
等の数々の優れた利点を有する防音材の製造方法を提供
するものである。result [Effects of the Invention] The soundproofing material using the coating agent according to the present invention has a soundproofing performance equal to or higher than that of a soundproofing material using a conventionally known soundproof sheet, and a method for producing the soundproofing material according to the present invention. According to the above, sound insulation sheet trim residue does not occur, which is useful for resource saving, and it is possible to omit the sound insulation sheet molding step or the preheating step for molding the sound insulation sheet when manufacturing the soundproofing material. Since it is a coating of coating agent, it can be automated by a coating robot.Since the sound insulation coating agent is a thermoplastic resin, it becomes a coating film at the same time as cooling after coating, so heating for drying is not required. Provide a method for producing a soundproofing material which has various excellent advantages such as applicable to cold press, and partial application of thermoplastic resin, which enables intensive and rational soundproofing measures. It is a thing.
第１図は請求項２により製造した防音材の一部の断面
図。１は熱可塑性樹脂による遮音層、２は嵩高性フェル
トによる吸音層。 第２図は請求項３により製造した防音材の一部の断面
図。１は熱可塑性樹脂による遮音層、２′はポリウレタ
ンフォーム材による吸音層。FIG. 1 is a sectional view of a part of the soundproof material manufactured according to claim 2. Reference numeral 1 is a sound insulation layer made of a thermoplastic resin, and 2 is a sound absorption layer made of a bulky felt. FIG. 2 is a partial cross-sectional view of the soundproof material manufactured according to claim 3. 1 is a sound insulation layer made of a thermoplastic resin, and 2'is a sound absorption layer made of a polyurethane foam material.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６２Ｄ 25/20 7615−3Ｄ Ｇ１０Ｋ 11/162 // Ｂ２９Ｋ 105:00 Ｂ２９Ｌ 9:00 (56)参考文献 特開 昭57−181864（ＪＰ，Ａ) 実開 昭58−122751（ＪＰ，Ｕ)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location B62D 25/20 7615-3D G10K 11/162 // B29K 105: 00 B29L 9:00 (56) Reference Reference JP-A-57-181864 (JP, A) S.A. 58-122751 (JP, U)
Claims (2)
塑性樹脂に充填材を加えた配合物を加熱により塗布し、
これに未成形の、もしくは成形済の嵩高性フェルトを載
置積層し、成形金型を閉じて加圧成形することを特徴と
する、塗布剤を利用したダッシュサイレンサーの製造方
法。1. A thermoplastic resin or a mixture of a thermoplastic resin and a filler is applied to a molding die by heating,
A method for producing a dash silencer using an application agent, characterized in that unmolded or molded bulky felt is placed and laminated on this, and the molding die is closed for pressure molding.
塑性樹脂に充填材を加えた配合物を加熱により塗布し、
成形金型を閉じてポリウレタンフォーム用反応液を注入
し、加熱することを特徴とする、塗布剤を利用したダッ
シュサイレンサーの製造方法。2. A thermoplastic resin or a mixture of a thermoplastic resin and a filler is applied to a molding die by heating,
A method for producing a dash silencer using a coating agent, which comprises closing a molding die, injecting a reaction liquid for polyurethane foam, and heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168495A JPH0794161B2 (en) | 1990-06-28 | 1990-06-28 | Dash silencer manufacturing method using coating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2168495A JPH0794161B2 (en) | 1990-06-28 | 1990-06-28 | Dash silencer manufacturing method using coating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0459238A JPH0459238A (en) | 1992-02-26 |
| JPH0794161B2 true JPH0794161B2 (en) | 1995-10-11 |
Family
ID=15869147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2168495A Expired - Fee Related JPH0794161B2 (en) | 1990-06-28 | 1990-06-28 | Dash silencer manufacturing method using coating agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794161B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0794160B2 (en) * | 1990-06-28 | 1995-10-11 | 日本特殊塗料株式会社 | Dash silencer manufacturing method using coating agent |
| JP2002287768A (en) * | 2001-03-28 | 2002-10-04 | Nichias Corp | Molded acoustic material and method of manufacturing the same |
| JP2003238897A (en) * | 2002-02-14 | 2003-08-27 | Nippon Tokushu Toryo Co Ltd | Heat and sound insulating paint and process |
| JP6352491B2 (en) * | 2017-04-25 | 2018-07-04 | 株式会社イノアックコーポレーション | Sound insulation material and manufacturing method thereof |
| EP4084995A4 (en) * | 2019-12-30 | 2023-07-26 | Pimsa Otomotiv Anonim Sirketi | A composite under vehicle protection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57181864A (en) * | 1981-05-01 | 1982-11-09 | Kasai Kogyo Kk | Method of molding interior finish material for automobile |
| JPS5886344U (en) * | 1981-12-08 | 1983-06-11 | 松下電工株式会社 | soundproofing material |
| JPS58122751U (en) * | 1982-02-15 | 1983-08-20 | 河西工業株式会社 | Engine room insulator |
| JPH0794160B2 (en) * | 1990-06-28 | 1995-10-11 | 日本特殊塗料株式会社 | Dash silencer manufacturing method using coating agent |
-
1990
- 1990-06-28 JP JP2168495A patent/JPH0794161B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0459238A (en) | 1992-02-26 |
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