JPH0217868Y2 - - Google Patents
Info
- Publication number
- JPH0217868Y2 JPH0217868Y2 JP1984191953U JP19195384U JPH0217868Y2 JP H0217868 Y2 JPH0217868 Y2 JP H0217868Y2 JP 1984191953 U JP1984191953 U JP 1984191953U JP 19195384 U JP19195384 U JP 19195384U JP H0217868 Y2 JPH0217868 Y2 JP H0217868Y2
- Authority
- JP
- Japan
- Prior art keywords
- mat
- metal foil
- glass fiber
- soundproof
- holes
- 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
Links
- 239000003365 glass fiber Substances 0.000 claims description 39
- 239000011888 foil Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- 239000005871 repellent Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000002940 repellent Effects 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
「技術分野」
本考案は、道路、鉄道等の沿線に設けられる防
音壁や、自動車用モールド品の裏貼りなどの材料
として使用される防音マツトに関する。[Detailed Description of the Invention] "Technical Field" The present invention relates to a soundproof mat used as a material for soundproof walls installed along roads, railways, etc., and for backing of molded products for automobiles.
「従来技術およびその問題点」
従来、かかる防音壁としては、騒音の発生方向
の面に多数の孔を有する金属製の箱体内に、ガラ
ス繊維からなる防音マツトを収納したものが使用
されている。そして、この防音マツトは、ガラス
繊維をバインダーで結合したものを主材料として
いるが、それだけでは風などによつてガラス繊維
が飛散しやすく、降雨などに対する耐候性も充分
に得られない。"Prior Art and its Problems" Conventionally, such soundproof walls have been made by housing soundproof mats made of glass fibers in a metal box with a large number of holes on the side facing the noise generation direction. . The main material of this soundproof mat is glass fibers bound with a binder, but the glass fibers are easily blown away by the wind and do not have sufficient weather resistance against rain and the like.
このため、近年、第３図に示すような防音マツ
トが提案され、使用されている。すなわち、この
防音マツト１１は、ガラス繊維マツト１２の少な
くとも片面（第３図の例では両面）にガラス繊維
クロス１３を貼り付け、ガラス繊維マツト１１お
よびガラス繊維クロス１３に撥水処理を施してで
きている。この防音マツト１１によれば、ガラス
繊維クロス１３によつてガラス繊維の飛散が防止
され、撥水処理によつて降雨などに対する耐候性
も得られる利点がある。 For this reason, in recent years, a soundproof mat as shown in FIG. 3 has been proposed and used. That is, this soundproof mat 11 is made by pasting a glass fiber cloth 13 on at least one side (both sides in the example of FIG. 3) of a glass fiber mat 12, and applying a water repellent treatment to the glass fiber mat 11 and the glass fiber cloth 13. ing. This soundproof mat 11 has the advantage that the glass fiber cloth 13 prevents the glass fibers from scattering, and the water repellent treatment provides weather resistance against rain and the like.
しかしながら、上記防音マツト１１において
は、表面に設けられたガラス繊維クロス１３に着
色することが困難であり、このため着色によつて
耐候性を向上させたり、ドライバーが眩惑するの
を防止したりすることができなかつた。また、接
着剤の耐候性が悪いため、ガラス繊維クロス１３
が剥がれやすく、このためガラス繊維クロス１３
のさらに外側にアルミニウム等のパンチング板を
設ける必要があつた。 However, in the above-mentioned soundproof mat 11, it is difficult to color the glass fiber cloth 13 provided on the surface, and therefore, coloring improves weather resistance and prevents drivers from being dazzled. I couldn't do it. In addition, due to the poor weather resistance of the adhesive, glass fiber cloth 13
is easy to peel off, so glass fiber cloth 13
It was necessary to provide a punching plate made of aluminum or the like further outside.
「考案の目的」
本考案の目的は、上記従来の防音マツトの問題
点を解決し、充分な耐候性が得られ、かつ、表面
に着色等もできるようにした防音マツトを提供す
ることにある。``Purpose of the invention'' The purpose of the invention is to solve the problems of the conventional soundproof pine mentioned above, and to provide a soundproof pine that has sufficient weather resistance and whose surface can be colored. .
「考案の構成」
本考案による防音マツトは、撥水処理されたガ
ラス繊維マツトの少なくとも片面に金属箔が被覆
され、片面の前記金属箔には多数の孔が形成され
ており、前記孔の径は0.04〜0.5mmであり、開口
率は0.5〜５％とされている。"Structure of the invention" The soundproof mat according to the invention includes a glass fiber mat treated with water repellent, at least one side of which is coated with metal foil, a large number of holes formed in the metal foil on one side, and a diameter of each of the holes. is 0.04 to 0.5 mm, and the aperture ratio is 0.5 to 5%.
本考案の具体例を第１図により説明すると、こ
の防音マツト２１は、撥水処理されたガラス繊維
マツト２２の少なくとも片面（第１図の例では両
面）にアルミニウム、ステンレス等の金属箔２３
が被覆され、片面の金属箔２３には多数の孔２４
…が形成されている。なお、孔２４…の形状は必
ずしも円形である必要はなく、楕円形、正方形な
どでもよい。 A specific example of the present invention will be explained with reference to FIG. 1. This soundproof mat 21 includes a water-repellent glass fiber mat 22 and at least one side (both sides in the example shown in FIG. 1) of a metal foil 23 made of aluminum, stainless steel, etc.
is covered with a large number of holes 24 in the metal foil 23 on one side.
...is being formed. Note that the shape of the holes 24 does not necessarily have to be circular, and may be oval, square, or the like.
ガラス繊維マツト２２は、例えば遠心法によつ
て製造されるガラス短繊維を、走行する有孔コン
ベヤ上にそのコンベヤの下部から雰囲気を吸引し
つつ落下堆積させ、フエノール樹脂等の結合剤と
シリコン樹脂等の撥水剤とを附与して未硬化マツ
トを形成し、この未硬化マツトを加熱炉に送り所
定厚みとなるように挾圧しつつ加熱して結合剤を
硬化することによつて製造できる。なお、撥水剤
はガラス繊維マツト２２を製造した後に附与して
もよい。そして、良好な吸音性を得るようにする
ため、ガラス短繊維の１m3当りの堆積量は24Kg〜
100Kg程度が適当である。また、ガラス短繊維を
しつかりと結合させるため、結合剤の添加量はガ
ラス短繊維の堆積重量の３〜9wt％程度が適当で
ある。さらに、降雨などに対する充分な耐候性を
得るため、撥水剤の添加量はガラス短繊維の堆積
重量の0.3〜3wt％程度が適当である。そして、良
好な防音性能を得るため、ガラス繊維マツト２２
の厚さは25〜75mm程度が適当である。 The glass fiber mat 22 is made by dropping and depositing short glass fibers manufactured by, for example, a centrifugal method onto a running perforated conveyor while sucking the atmosphere from the bottom of the conveyor, and then depositing a binder such as a phenolic resin and a silicone resin. It can be manufactured by adding a water repellent such as, etc. to form an uncured mat, and then sending this uncured mat to a heating furnace and heating it under pressure while sandwiching it to a predetermined thickness to harden the binder. . Note that the water repellent may be applied after the glass fiber mat 22 is manufactured. In order to obtain good sound absorption properties, the amount of short glass fibers deposited per 1 m3 is 24 kg~
Approximately 100Kg is appropriate. Further, in order to firmly bind the short glass fibers, the amount of the binder added is preferably about 3 to 9 wt% of the accumulated weight of the short glass fibers. Furthermore, in order to obtain sufficient weather resistance against rainfall, etc., the amount of water repellent added is preferably about 0.3 to 3 wt% of the accumulated weight of the short glass fibers. In order to obtain good soundproofing performance, glass fiber mat 22
The appropriate thickness is about 25 to 75 mm.
金属箔２３の上記ガラス繊維マツト２２への貼
り付けは、例えば次のようにして行なうことがで
きる。すなわち、ガラス繊維マツト２２の製造工
程における未硬化マツトの段階で金属箔２３を少
なくとも片面に被覆させ、未硬化マツトの挾圧と
共に金属箔２３を未硬化マツトに圧着させ、その
状態で加熱して未硬化マツトに附与された結合剤
の硬化と共に貼り付けるようにする。このように
すれば、製造工程を全てオンラインで行なうこと
ができる。また、ガラス繊維マツト２２を製造し
た後、金属箔２３の内面に接着剤を塗布し、ロー
ラ等によつて金属箔２３をガラス繊維マツト２２
に圧着して貼り付けてもよい。しかし、この場
合、接着剤の量が多いと金属箔２３面の孔２４を
ふさいでしまい吸音効率を下げるので注意する必
要がある。 The metal foil 23 can be attached to the glass fiber mat 22 in the following manner, for example. That is, at least one side of the uncured mat is coated with metal foil 23 in the manufacturing process of the glass fiber mat 22, and the metal foil 23 is pressed onto the uncured mat with the clamping pressure of the uncured mat, and heated in that state. The adhesive is applied as the binder applied to the uncured mat hardens. In this way, the entire manufacturing process can be performed online. After manufacturing the glass fiber mat 22, an adhesive is applied to the inner surface of the metal foil 23, and the metal foil 23 is attached to the glass fiber mat 22 using a roller or the like.
It may also be crimped and pasted. However, in this case, care must be taken because if the amount of adhesive is too large, it will block the holes 24 on the surface of the metal foil 23 and reduce the sound absorption efficiency.
金属箔２３の厚さは、ある程度の強度が得られ
るように、例えばアルミ箔を用いた場合には30〜
50μｍ程度とし、ステンレス箔を用いた場合には
60μｍ前後とすることが好ましい。 The thickness of the metal foil 23 is, for example, 30 to 30 mm when aluminum foil is used so as to obtain a certain degree of strength.
When using stainless steel foil, the thickness should be approximately 50 μm.
The thickness is preferably around 60 μm.
金属箔２３の孔２４は、金属箔２３が音波に対
する反射性を有し、それによつて吸音率が低下す
るので、騒音の発生方向に向けられる少なくとも
片面の金属箔２３に形成される。そして、金属箔
２３に形成される孔２４の径ａは0.04〜0.5mmが
好ましく、0.05〜0.2mmがさらに好ましい。孔２
４が円形でなく、楕円形、正方形などの場合は、
開口面積を円の面積と仮定して求めた擬似直径が
上記範囲であることが好ましい。孔２４の径ａが
0.04mm未満の場合は吸音率が不安定となり、充分
な吸音性を得にくくなる。また、孔２４の径ａが
0.5mmを超えると水が侵入しやすくなる。さらに、
孔２４による開口率は0.5〜５％が好ましく、0.5
〜３％がさらに好ましい。開口率が0.5％未満で
は充分な吸音率が得られず、開口率が５％を超え
てもあまり吸音率の向上はなく、かえつて金属箔
２３の強度が弱くなる問題が生じる。そして、本
考案者らの試験によれば、孔２４の径ａが１mmで
開口率が10％の場合と、孔２４の径ａが0.3mmで
開口率が２％の場合の吸音率はほぼ同等であるこ
とが分つた。したがつて、径ａが小さいほど開口
率は少なくてすむ。かかる微細な径ａを有する孔
２４は、例えばレーザー加工等によつて容易に形
成することができる。 The holes 24 in the metal foil 23 are formed in at least one side of the metal foil 23 facing in the direction of noise generation, since the metal foil 23 has a reflective property for sound waves, thereby reducing the sound absorption coefficient. The diameter a of the hole 24 formed in the metal foil 23 is preferably 0.04 to 0.5 mm, more preferably 0.05 to 0.2 mm. Hole 2
If 4 is not circular, but oval, square, etc.,
It is preferable that the pseudo diameter obtained by assuming the opening area to be the area of a circle is within the above range. The diameter a of the hole 24 is
If it is less than 0.04 mm, the sound absorption coefficient will be unstable and it will be difficult to obtain sufficient sound absorption. Also, the diameter a of the hole 24 is
If it exceeds 0.5mm, water will easily enter. moreover,
The aperture ratio of the holes 24 is preferably 0.5 to 5%, and is 0.5%.
~3% is more preferred. When the aperture ratio is less than 0.5%, a sufficient sound absorption coefficient cannot be obtained, and even when the aperture ratio exceeds 5%, the sound absorption coefficient does not improve much, and the strength of the metal foil 23 becomes weaker. According to tests conducted by the present inventors, the sound absorption coefficients are approximately the same when the diameter a of the hole 24 is 1 mm and the aperture ratio is 10%, and when the diameter a of the hole 24 is 0.3 mm and the aperture ratio is 2%. It was found that they are equivalent. Therefore, the smaller the diameter a, the smaller the aperture ratio. The hole 24 having such a small diameter a can be easily formed by, for example, laser processing.
本考案による防音マツト２１は、例えば騒音の
発生方向に向けられた面に多数の孔を有する金属
製の箱体に入れられて防音壁として使用されるの
であるが、その際、孔２４を有する金属箔２３で
被覆された面を騒音の発生方向となるように収容
される。そして、騒音による音波が金属製の箱体
の多数の孔から内部に侵入し、さらに金属箔２３
の孔２４からガラス繊維マツト２２内に入つて吸
収されることにより、防音効果が得られる。ま
た、降雨などにより水が侵入しても、金属箔２３
の孔２４の径ａを小さくしておけば、水がガラス
繊維マツト２２内に侵入することを阻止でき、仮
に少量の水がガラス繊維マツト２２内に侵入して
もガラス繊維に撥水処理が施されているので防音
性能が低下することはない。 The soundproof mat 21 according to the present invention is used as a soundproof wall by being placed in a metal box having a large number of holes on the surface facing the direction of noise generation. It is housed so that the surface covered with metal foil 23 is in the direction of noise generation. Then, the sound waves caused by the noise penetrate into the interior through the many holes in the metal box, and then the metal foil 23
The soundproofing effect is obtained by entering the glass fiber mat 22 through the holes 24 and being absorbed. In addition, even if water enters due to rain, etc., the metal foil 23
By making the diameter a of the hole 24 small, it is possible to prevent water from entering the glass fiber mat 22, and even if a small amount of water enters the glass fiber mat 22, the glass fibers are not water-repellent. soundproofing performance will not deteriorate.
また、本考案の防音マツト２１は、例えば自動
車のボデイーになるモールド品に裏貼りしてエン
ジンなどの騒音が室内に伝わらないようにする用
途にも適用できる。 The soundproof mat 21 of the present invention can also be applied to a molded product that becomes the body of an automobile, for example, to prevent engine noise from being transmitted into the room.
なお、本考案において、ガラス繊維マツト２２
だけでなく、金属箔２３にもシリコン樹脂等の撥
水剤を塗布して撥水処理してもよい。 In addition, in the present invention, the glass fiber mat 22
In addition, the metal foil 23 may also be treated to be water repellent by applying a water repellent such as silicone resin.
「考案の実施例」
遠心法によつて製造されたガラス短繊維を、走
行する有孔コンベヤ上にそのコンベヤの下部から
雰囲気を吸引しつつ落下堆積させ、ガラス短繊維
の堆積量に対してフエノール樹脂を5wt％、シリ
コン樹脂を1.0wt％添加して未硬化マツトを製造
した。この未硬化マツトの表裏面に厚さ70μｍの
アルミ箔２３，２３を被覆させた。なお、片面の
アルミ箔には予めレーザー加工によつて径ａが
0.33mmの孔２４を2.0mm間隔で形成しておいた。
なお、孔２４の開孔率は2.1％である。そして、
この状態で未硬化マツトを加熱炉に送り、アルミ
箔２３，２３と共に未硬化マツトを挾圧して250
℃にて40秒間処理し、フエノール樹脂を硬化させ
た。こうして製造された防音マツト２１は、ガラ
ス繊維マツト２２の厚さが５cm、１m3当りの重量
が32Kgであり、アルミ箔２３，２３はフエノール
樹脂によつてガラス繊維マツト２２にしつかりと
貼り付けられていた。``Example of the invention'' Short glass fibers produced by the centrifugal method are dropped and deposited on a moving perforated conveyor while sucking the atmosphere from the bottom of the conveyor. Uncured pine was produced by adding 5 wt% of resin and 1.0 wt% of silicone resin. The front and back surfaces of this uncured mat were covered with aluminum foils 23, 23 having a thickness of 70 μm. In addition, the diameter a of the aluminum foil on one side is pre-processed by laser processing.
Holes 24 of 0.33 mm were formed at intervals of 2.0 mm.
Note that the aperture ratio of the holes 24 is 2.1%. and,
In this state, the uncured mat is sent to a heating furnace, and the uncured mat is clamped together with the aluminum foils 23, 23, and
The phenolic resin was cured by treatment at ℃ for 40 seconds. In the soundproof mat 21 manufactured in this way, the thickness of the glass fiber mat 22 is 5 cm, the weight per 1 m 3 is 32 kg, and the aluminum foils 23, 23 are firmly attached to the glass fiber mat 22 with phenol resin. was.
この防音マツト２１について、JIS Ａ−1405
「管内法により建築材料の垂直入射吸音率測定方
法」により、吸音率を測定した。その結果を第２
図に示す。第２図から明らかなように、この防音
マツト２１は400Hz以上の波長帯において50％以
上の吸音率を示し、平均吸音率（NRC）は0.71
であつた。 Regarding this soundproof mat 21, JIS A-1405
The sound absorption coefficient was measured using the "Method for measuring the normal incidence sound absorption coefficient of building materials using the in-pipe method." The result is the second
As shown in the figure. As is clear from Figure 2, this soundproof mat 21 exhibits a sound absorption coefficient of 50% or more in the wavelength band of 400Hz or higher, and the average sound absorption coefficient (NRC) is 0.71.
It was hot.
「考案の効果」
以上説明したように、本考案によれば、撥水処
理されたガラス繊維マツトの少なくとも片面に金
属箔が被覆され、片面の金属箔には多数の孔が形
成されているので、騒音による音波は金属箔の孔
からガラス繊維マツトの内部に入り吸収される。"Effect of the invention" As explained above, according to the invention, at least one side of the water-repellent glass fiber mat is coated with metal foil, and a large number of holes are formed in the metal foil on one side. The sound waves caused by the noise enter the inside of the glass fiber mat through the holes in the metal foil and are absorbed.
また、金属箔に形成される孔の径を0.04〜0.5
mmとしたことにより、充分な吸音性を付与すると
共に水の侵入を防止できる。更に、金属箔に形成
される孔の開口率を0.5〜５％としたことにより、
吸音率を充分に高めると共に金属箔の強度低下を
防止できる。そして、少量の水が内部に侵入した
としても、ガラス繊維マツトが撥水処理されてい
るので防音効果が低下することはない。さらに、
少なくとも片面に被覆される金属箔には、電界発
色等により着色が可能なので、耐候性の高い色を
つけたり、ドライバーに対する防眩効果のある色
をつけたりすることができる。さらにまた、金属
箔を使用することにより、製造工程を全てオンラ
イン化することができ、作業性を向上させて製造
コストを低減させることができる。 In addition, the diameter of the hole formed in the metal foil is 0.04 to 0.5.
mm, it is possible to provide sufficient sound absorption and prevent water from entering. Furthermore, by setting the aperture ratio of the holes formed in the metal foil to 0.5 to 5%,
It is possible to sufficiently increase the sound absorption coefficient and prevent a decrease in the strength of the metal foil. Even if a small amount of water enters the interior, the soundproofing effect will not deteriorate because the glass fiber mat has been treated to be water repellent. moreover,
The metal foil coated on at least one side can be colored by electrochromic coloring or the like, so it can be colored with high weather resistance or with a color that has an anti-glare effect for drivers. Furthermore, by using metal foil, the entire manufacturing process can be carried out online, improving workability and reducing manufacturing costs.
第１図は本考案による防音マツトの具体例を示
す断面図、第２図は同防音マツトの吸音特性を示
すグラフ、第３図は従来の防音マツトの一例を示
す断面図である。
図中、２１は防音マツト、２２はガラス繊維マ
ツト、２３は金属箔、２４は孔、ａは孔の径であ
る。
FIG. 1 is a sectional view showing a specific example of a soundproofing mat according to the present invention, FIG. 2 is a graph showing the sound absorption characteristics of the same soundproofing mat, and FIG. 3 is a sectional view showing an example of a conventional soundproofing mat. In the figure, 21 is a soundproof mat, 22 is a glass fiber mat, 23 is a metal foil, 24 is a hole, and a is the diameter of the hole.
Claims (1)
片面に金属箔が被覆され、片面の前記金属箔には
多数の孔が形成されており、前記孔の径は0.04〜
0.5mmであり、開口率は0.5〜５％であることを特
徴とする防音マツト。 At least one side of the water-repellent glass fiber mat is coated with metal foil, and the metal foil on one side has a large number of holes formed therein, and the diameter of the holes is 0.04~
A soundproof mat having a diameter of 0.5 mm and an aperture ratio of 0.5 to 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984191953U JPH0217868Y2 (en) | 1984-12-18 | 1984-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984191953U JPH0217868Y2 (en) | 1984-12-18 | 1984-12-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61107533U JPS61107533U (en) | 1986-07-08 |
| JPH0217868Y2 true JPH0217868Y2 (en) | 1990-05-18 |
Family
ID=30749385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984191953U Expired JPH0217868Y2 (en) | 1984-12-18 | 1984-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0217868Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007262765A (en) * | 2006-03-29 | 2007-10-11 | Yamaha Corp | Sound absorbing material and sound absorbing panel |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618223Y2 (en) * | 1986-07-09 | 1994-05-11 | 株式会社神戸製鋼所 | Annealing furnace wall structure |
| JPH0627403Y2 (en) * | 1989-03-20 | 1994-07-27 | パラマウント硝子工業株式会社 | Interior materials for construction |
| JP6904967B2 (en) * | 2016-09-28 | 2021-07-21 | 富士フイルム株式会社 | Film and dashboard materials |
| EP3643497A4 (en) * | 2017-06-21 | 2020-04-29 | Fujifilm Corporation | Composite body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123481A (en) * | 1977-04-05 | 1978-10-27 | Asahi Fibreglass Co | Method for making heattresistant sounddabsorbent material |
| JPS5730674A (en) * | 1980-07-28 | 1982-02-18 | Susumu Hayashi | Operating lever for two-wheel barrow |
-
1984
- 1984-12-18 JP JP1984191953U patent/JPH0217868Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123481A (en) * | 1977-04-05 | 1978-10-27 | Asahi Fibreglass Co | Method for making heattresistant sounddabsorbent material |
| JPS5730674A (en) * | 1980-07-28 | 1982-02-18 | Susumu Hayashi | Operating lever for two-wheel barrow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007262765A (en) * | 2006-03-29 | 2007-10-11 | Yamaha Corp | Sound absorbing material and sound absorbing panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61107533U (en) | 1986-07-08 |
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