JPH0667676A - Corrugated sound absorbing material - Google Patents
Corrugated sound absorbing materialInfo
- Publication number
- JPH0667676A JPH0667676A JP3029136A JP2913691A JPH0667676A JP H0667676 A JPH0667676 A JP H0667676A JP 3029136 A JP3029136 A JP 3029136A JP 2913691 A JP2913691 A JP 2913691A JP H0667676 A JPH0667676 A JP H0667676A
- Authority
- JP
- Japan
- Prior art keywords
- sound absorbing
- absorbing material
- corrugated
- weight
- pts
- 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.)
- Pending
Links
- 239000011358 absorbing material Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000006261 foam material Substances 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 7
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000006260 foam Substances 0.000 abstract description 5
- 150000001412 amines Chemical class 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 4
- 229920000728 polyester Polymers 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 abstract description 2
- 229920000570 polyether Polymers 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- 229940043237 diethanolamine Drugs 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000012999 compression bending Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フォーム材を凹凸に成
形した波形吸音材に関し、詳細には吸音材の表面積を拡
大することにより吸音性能を向上し、更に剛性が大きく
なるため軽量化もなし得る波形吸音材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated sound absorbing material in which a foam material is formed in a concavo-convex shape. More specifically, the sound absorbing performance is improved by enlarging the surface area of the sound absorbing material, and the rigidity is also increased to reduce the weight. The present invention relates to a corrugated sound absorbing material that can be used.
【０００２】[0002]
【従来の技術】従来より、フォーム材を成形してなる吸
音材は基材の凹凸に応じて必要最小限の凹凸を設け吸音
性を向上せしめんとしていた。また例えば、自動車の天
井材やボンネット裏面には、フォーム材を単独でもしく
は表皮材と一体化して発泡成形した比較的フラットな成
形吸音材が使用されているのが現状であり、基材形状に
無関係に吸音材に凹凸を設けることはなかった。2. Description of the Related Art Conventionally, a sound-absorbing material formed by molding a foam material has been provided with a necessary minimum unevenness corresponding to the unevenness of a base material so as to improve the sound absorbing property. In addition, for example, in the current situation, a relatively flat molded sound absorbing material is used for the ceiling material and the back surface of the bonnet of an automobile, which is foam-molded alone or integrally with a skin material. Irrespectively, the sound absorbing material was not provided with irregularities.
【０００３】[0003]
【発明が解決しようとする課題】本発明の課題は、吸音
材の剛性を低下せしめることなく、吸音性を向上せし
め、吸音材重量を軽減せしめた吸音材、もしくは吸音材
の重量を増加させることなしに、吸音性、剛性を向上せ
しめた吸音材を実現する点にある。SUMMARY OF THE INVENTION An object of the present invention is to improve the sound absorbing property and reduce the weight of the sound absorbing material without decreasing the rigidity of the sound absorbing material, or to increase the weight of the sound absorbing material. The point is to realize a sound absorbing material with improved sound absorption and rigidity.
【０００４】[0004]
【課題を解決するための手段】かかる課題を解決せんと
して、本発明者らは鋭意研究の結果、フォーム材を発泡
成形してなる吸音材に、基材形状に無関係な任意形状の
凹凸を設けたものであり、しかして本発明の要旨は、以
下の諸項目に存する。As a solution to this problem, the inventors of the present invention have earnestly studied and as a result, as a result, the sound absorbing material formed by foaming a foam material is provided with irregularities of an arbitrary shape unrelated to the shape of the base material. The gist of the present invention lies in the following items.
【０００５】フォーム材を凹凸を設けた波形形状に成形
してなることを特徴とする波形吸音材。A corrugated sound absorbing material, characterized by being formed by molding a foam material into a corrugated shape having irregularities.
【０００６】フォーム材を凹凸を設けた波形形状に成形
した後、凸面にのみ接するように表皮材を設けてなるこ
とを特徴とする波形吸音材。A corrugated sound absorbing material, characterized in that a foam material is molded into a corrugated shape having irregularities, and then a skin material is provided so as to contact only the convex surface.
【０００７】フォーム材布を凹凸を設けた波形形状に成
形した後、自動車の天井材として用いてなることを特徴
とする波形吸音材。A corrugated sound absorbing material, characterized in that the foam material cloth is molded into a corrugated shape having irregularities and then used as a ceiling material for automobiles.
【０００８】フォーム材を凹凸を設けた波形形状に成形
した後、自動車のボンネット裏面に用いてなることを特
徴とする波形吸音材。A corrugated sound absorbing material, which is formed on a back surface of a hood of an automobile after molding a foam material into a corrugated shape having irregularities.
【０００９】本発明に用いるフォーム材は、合成樹脂成
分の１種以上と発泡剤、発泡助剤、必要により充填材、
ゴム成分等よりなる。合成樹脂成分としては、熱硬化性
樹脂もしくは熱可塑性樹脂を用い、例えば、ポリウレタ
ン樹脂、ポリスチレン樹脂、ポリプロピレン樹脂、フェ
ノール樹脂、メラミン樹脂、フラン樹脂、ポリエステル
樹脂、エポキシ樹脂、塩化ビニル樹脂、酢酸ビニル樹
脂、アクリル樹脂、ポリエチレン樹脂等を用い得る。好
適な吸音性能を顕現するためにフォーム材は、連続気泡
であることを必要とする。全く通気性を有さない完全な
独立気泡型のフォーム材を使用する場合は、適宜開孔部
を設ける必要がある。かかるフォーム材は一般的には厚
さが８〜５０ｍｍであり、面密度は４００〜４０００ｇ
／ｍ2 である。The foam material used in the present invention includes at least one synthetic resin component, a foaming agent, a foaming auxiliary agent, and if necessary, a filler,
It consists of rubber components. As the synthetic resin component, a thermosetting resin or a thermoplastic resin is used, and examples thereof include polyurethane resin, polystyrene resin, polypropylene resin, phenol resin, melamine resin, furan resin, polyester resin, epoxy resin, vinyl chloride resin, vinyl acetate resin. , Acrylic resin, polyethylene resin and the like can be used. The foam material needs to be open cells in order to exhibit suitable sound absorption performance. When using a completely closed-cell type foam material having no air permeability, it is necessary to appropriately provide an opening portion. Such foam material generally has a thickness of 8 to 50 mm and an areal density of 400 to 4000 g.
/ M 2 .
【００１０】表皮材は、織布、不織布又は編物を使用す
ることができ、装飾機能を必要とするが、吸音効果を充
分に考慮して材料が選択されなければならない。即ち、
通気性に欠ける材料、例えば比較的厚い塩化ビニル樹脂
シート（塩ビレザー）等を用いる場合には開孔部を設け
ない限り用いることは推奨できない。好ましくは薄葉状
不織布やクロス等であり、樹脂フィルムを用いるに当た
っては開孔部を設けない場合には厚さが０．０１ｍｍ以
下であることが好ましい。As the skin material, woven fabric, non-woven fabric or knitted fabric can be used, and a decorative function is required. However, the material must be selected in consideration of the sound absorbing effect. That is,
It is not recommended to use a material lacking air permeability, such as a relatively thick vinyl chloride resin sheet (vinyl chloride leather), unless an opening is provided. A thin leaf-like nonwoven fabric or cloth is preferable, and a thickness of 0.01 mm or less is preferable when a resin film is used and an opening is not provided.
【００１１】波形吸音材に設けられた凹凸形状は、正面
断面形状は、Ｕ字形、コ字形とするのが好ましい。凸部
の大きさに特に制限はないが、吸音材の表面積増加によ
る吸音性の向上及び剛性向上に寄与し得る大きさとする
ことを必須とする。The corrugated shape provided on the corrugated sound absorbing material preferably has a U-shaped or U-shaped front cross-sectional shape. The size of the convex portion is not particularly limited, but it is essential that the size be such that it contributes to the improvement of the sound absorbing property and the rigidity by increasing the surface area of the sound absorbing material.
【００１２】波形吸音材と表皮材の間に吸音層を挾置す
ることは、吸音性能向上の点から好ましく、フェルトや
ポリスチレン、ポリプロピレン、ポリウレタン等のフォ
ーム材を用いる。It is preferable to interpose a sound absorbing layer between the corrugated sound absorbing material and the skin material from the viewpoint of improving sound absorbing performance, and a foam material such as felt, polystyrene, polypropylene or polyurethane is used.
【００１３】波形吸音材の凸部と表皮材の接着は、波形
吸音材凸部に予め接着剤を塗布しておくか若しくはホッ
トメルトを用いることによる。The protrusions of the corrugated sound absorbing material and the skin material are adhered to each other by applying an adhesive to the protrusions of the corrugated sound absorbing material in advance or by using hot melt.
【００１４】フォーム材を成形する方法としては、例え
ばウレタンフォームの場合、金型中にウレタン原液を注
入、発泡して形成せしめるが、該原液はポリオールとポ
リイソシアネートとを主剤とし、発泡剤、触媒、整泡
剤、架橋剤などの助剤と共に反応させて作られる。更に
は、これら原液成分中にアスファルト、ゴムを加えてお
くことも吸音効果向上のために好ましい。金型温度は、
３０〜１００℃で３０秒〜２分間の条件が好ましい。As a method for molding a foam material, for example, in the case of urethane foam, a urethane undiluted solution is poured into a mold and foamed to form a foamed material. It is made by reacting with auxiliary agents such as foam stabilizers and crosslinking agents. Furthermore, it is also preferable to add asphalt and rubber to these stock solution components in order to improve the sound absorbing effect. Mold temperature is
Conditions of 30 to 100 ° C. for 30 seconds to 2 minutes are preferable.
【００１５】[0015]
【実施例】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 The following examples are provided for a more detailed understanding of the present invention. Naturally, the invention is not limited to the following examples.
【００１６】[0016]
【実施例１】高さ２ｃｍ、直径１０ｃｍの椀状凹凸形状
を連続的に設け、波形形状となした５０℃の金型中にポ
リエーテルトリオール１００重量部、ＴＤＩ１００重量
部、水４重量部、アミン系触媒０．３重量部、ジエタノ
ールアミン３重量部よりなるウレタンフォーム材原液成
分を注入し、発泡せしめて面密度９６０ｇ／ｍ2 のウレ
タンフォーム波形吸音材を得た。ポリエステル系繊維か
らなる薄葉状表皮材を該波形吸音材の凸部のみ接するよ
うに両面に設け、一体化物となした。Example 1 100 parts by weight of polyethertriol, 100 parts by weight of TDI, and 4 parts by weight of water were placed in a mold at 50 ° C. in which a bowl-shaped concavo-convex shape having a height of 2 cm and a diameter of 10 cm was continuously provided. A urethane foam material undiluted component consisting of 0.3 parts by weight of an amine catalyst and 3 parts by weight of diethanolamine was injected and foamed to obtain a urethane foam corrugated sound absorbing material having an areal density of 960 g / m 2 . A thin leaf-like skin material made of polyester fiber was provided on both surfaces so that only the convex portions of the corrugated sound absorbing material were in contact with each other to form an integrated product.
【００１７】[0017]
【実施例２】高さ２ｃｍ、直径１０ｃｍの椀状凹凸形状
を連続的に設け、波形形状となした５０℃の金型中にポ
リエーテルトリオール１００重量部、ＴＤＩ１００重量
部、水４重量部、アミン系触媒０．３重量部、ジエタノ
ールアミン３重量部よりなるウレタンフォーム材原液成
分を注入し、発泡せしめて面密度８３０ｇ／ｍ2 のウレ
タンフォーム波形吸音材を得た。ポリエステル系繊維か
らなる薄葉状表皮材を該波形吸音材の凸部のみ接するよ
うに両面に設け、一体化物となした。Example 2 A cup-shaped concave and convex shape having a height of 2 cm and a diameter of 10 cm was continuously provided, and 100 parts by weight of polyethertriol, 100 parts by weight of TDI, and 4 parts by weight of water were placed in a corrugated mold at 50 ° C. A urethane foam material undiluted component consisting of 0.3 parts by weight of an amine catalyst and 3 parts by weight of diethanolamine was injected and foamed to obtain a urethane foam corrugated sound absorbing material having an areal density of 830 g / m 2 . A thin leaf-like skin material made of polyester fiber was provided on both surfaces so that only the convex portions of the corrugated sound absorbing material were in contact with each other to form an integrated product.
【００１８】[0018]
【従来例】５０℃の金型中にポリエーテルトリオール１
００重量部、ＴＤＩ１００重量部、水４重量部、アミン
系触媒０．３重量部、ジエタノールアミン３重量部より
なるウレタンフォーム材原液成分を注入し、発泡せしめ
て面密度９５０ｇ／ｍ2 の平板のウレタンフォーム吸音
材を得た。ポリエステル系繊維からなる薄葉状表皮材を
該吸音材の両面に設け、一体化物となした。Conventional example: Polyether triol 1 in a mold at 50 ° C
A urethane foam material stock solution component consisting of 00 parts by weight, 100 parts by weight of TDI, 4 parts by weight of water, 0.3 parts by weight of an amine-based catalyst, and 3 parts by weight of diethanolamine is injected and foamed to form a flat urethane sheet having an areal density of 950 g / m 2. A foam sound absorbing material was obtained. A thin leaf skin material made of polyester fiber was provided on both sides of the sound absorbing material to form an integrated body.
【００１９】[0019]
【試験方法】吸音材１〜吸音材３の吸音率（残響室
法）、重量（ｇ／ｍ2）、剛性（圧縮曲げ強度）を測定
した。[Test Method] The sound absorption coefficient (reverberation chamber method), weight (g / m 2 ), and rigidity (compression bending strength) of the sound absorbing materials 1 to 3 were measured.
【００２０】[0020]
【００２１】[0021]
【発明の効果】本発明になる波形吸音材は、従来の吸音
材に比べて吸音材重量を増加させることなく、吸音性及
び剛性を共に向上せしめるか、または、吸音材の剛性を
低下させることなく、吸音材重量を軽減し、更には、吸
音性をも向上せしめることが明らかになった。EFFECTS OF THE INVENTION The corrugated sound absorbing material according to the present invention can improve both the sound absorbing property and the rigidity or reduce the rigidity of the sound absorbing material without increasing the weight of the sound absorbing material as compared with the conventional sound absorbing material. It was clarified that the weight of the sound absorbing material was reduced and the sound absorbing property was also improved.
Claims (4)
形してなることを特徴とする波形吸音材。1. A corrugated sound absorbing material, which is formed by molding a foam material into a corrugated shape having irregularities.
形した後、凸面にのみ接するように表皮材を設けてなる
ことを特徴とする波形吸音材。2. A corrugated sound absorbing material, characterized in that a foam material is formed into a corrugated shape having irregularities, and then a skin material is provided so as to contact only the convex surface.
形した後、自動車の天井材として用いてなることを特徴
とする波形吸音材。3. A corrugated sound absorbing material, which is obtained by molding a foam material into a corrugated shape having irregularities and then using the foam material as a ceiling material of an automobile.
形した後、自動車のボンネット裏面に用いてなることを
特徴とする波形吸音材。4. A corrugated sound absorbing material, which is formed on a back surface of an automobile hood after molding a foam material into a corrugated shape having irregularities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3029136A JPH0667676A (en) | 1991-01-31 | 1991-01-31 | Corrugated sound absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3029136A JPH0667676A (en) | 1991-01-31 | 1991-01-31 | Corrugated sound absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0667676A true JPH0667676A (en) | 1994-03-11 |
Family
ID=12267870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3029136A Pending JPH0667676A (en) | 1991-01-31 | 1991-01-31 | Corrugated sound absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0667676A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08119606A (en) * | 1994-10-24 | 1996-05-14 | Masayuki Imai | Oxygen concentrator |
| JP2003108146A (en) * | 2001-09-27 | 2003-04-11 | Nagoya Oil Chem Co Ltd | Sound absorbing material |
| WO2010147033A1 (en) * | 2009-06-16 | 2010-12-23 | Nishikawa Yukihiro | Sound-absorbing body, and process for manufacture thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757272A (en) * | 1980-09-25 | 1982-04-06 | Toshiba Corp | Radiation detector |
| JPS58188700A (en) * | 1982-04-30 | 1983-11-04 | 三洋塗装工業株式会社 | Reproduced painting and calligraphic work |
| JPS61249878A (en) * | 1985-04-30 | 1986-11-07 | Mazda Motor Corp | Sound-absorption structure for car |
| JPS6329767U (en) * | 1986-08-08 | 1988-02-26 | ||
| JPS6416643A (en) * | 1987-07-13 | 1989-01-20 | Nippon Insarutetsuku Kk | Sound absorbing heat insulator |
-
1991
- 1991-01-31 JP JP3029136A patent/JPH0667676A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757272A (en) * | 1980-09-25 | 1982-04-06 | Toshiba Corp | Radiation detector |
| JPS58188700A (en) * | 1982-04-30 | 1983-11-04 | 三洋塗装工業株式会社 | Reproduced painting and calligraphic work |
| JPS61249878A (en) * | 1985-04-30 | 1986-11-07 | Mazda Motor Corp | Sound-absorption structure for car |
| JPS6329767U (en) * | 1986-08-08 | 1988-02-26 | ||
| JPS6416643A (en) * | 1987-07-13 | 1989-01-20 | Nippon Insarutetsuku Kk | Sound absorbing heat insulator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08119606A (en) * | 1994-10-24 | 1996-05-14 | Masayuki Imai | Oxygen concentrator |
| JP2003108146A (en) * | 2001-09-27 | 2003-04-11 | Nagoya Oil Chem Co Ltd | Sound absorbing material |
| WO2010147033A1 (en) * | 2009-06-16 | 2010-12-23 | Nishikawa Yukihiro | Sound-absorbing body, and process for manufacture thereof |
| JP2011002523A (en) * | 2009-06-16 | 2011-01-06 | Yukikei Nishikawa | Sound absorbing body and manufacturing method thereof |
| US9230533B2 (en) | 2009-06-16 | 2016-01-05 | Yukihiro Nishikawa | Sound absorbing body and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20060246799A1 (en) | Sound attenuating/absorbing laminates and methods of making same | |
| JP2821899B2 (en) | Sound insulation structure and method of manufacturing the same | |
| PT637820E (en) | ABSORBENT ACOUSTIC POWER PANEL IN LOW, MIDDLE AND HIGH FREQUENCIES | |
| JPS6163784A (en) | Carpet composite lined by molded foam and its production | |
| JP2502725Y2 (en) | Danboard | |
| JPH0667676A (en) | Corrugated sound absorbing material | |
| CS219871B2 (en) | Mattings for the baggage areas and floors of the motor vehicles and other transport means | |
| JP3188555B2 (en) | Soundproofing material that can be integrally molded | |
| JPH0442111Y2 (en) | ||
| JPH0780195B2 (en) | Rim-molded sandwich structure and method for manufacturing the same | |
| JP3100188B2 (en) | Manufacturing method of molded molded products | |
| JPH0440905Y2 (en) | ||
| JPH0675579A (en) | Corrugaged sound absorbing material | |
| JP2908965B2 (en) | Carpet | |
| JP4771877B2 (en) | Interior materials for vehicles | |
| JPH0357470Y2 (en) | ||
| JPH0520495Y2 (en) | ||
| JPH0159098B2 (en) | ||
| JPH07121567B2 (en) | Lightweight soundproof material that can be deep-drawn | |
| JPH0356127Y2 (en) | ||
| JPH04282183A (en) | Production of sheet pad | |
| JPH0333551Y2 (en) | ||
| JPH09131823A (en) | Sheet pad for automobile | |
| JP2524166B2 (en) | Thin film soundproofing material | |
| JPH0542935Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19960820 |