JPH0222181A - Porous ceramic plate - Google Patents
Porous ceramic plateInfo
- Publication number
- JPH0222181A JPH0222181A JP16969288A JP16969288A JPH0222181A JP H0222181 A JPH0222181 A JP H0222181A JP 16969288 A JP16969288 A JP 16969288A JP 16969288 A JP16969288 A JP 16969288A JP H0222181 A JPH0222181 A JP H0222181A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- porcelain
- glass beads
- transparent glass
- porous
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 52
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 31
- 239000011324 bead Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 25
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 16
- 239000002344 surface layer Substances 0.000 claims description 9
- 239000000049 pigment Substances 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 7
- 230000035699 permeability Effects 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000005562 fading Methods 0.000 abstract description 3
- 229920001225 polyester resin Polymers 0.000 abstract description 3
- 239000004645 polyester resin Substances 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 239000004848 polyfunctional curative Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000004040 coloring Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は透水性舗装板、吸音板等に用いられるセラミッ
ク多孔板に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ceramic porous plate used for water-permeable pavement boards, sound-absorbing boards, etc.
（従来の技術）
セラミック質の破片を水ガラスにより結合したセラミッ
ク多孔板は例えば特公昭６２−２０３２１号公報に示さ
れているように通水性舗装板等として従来から知られて
いるが、従来のセラミック多孔板は透水性、強度、吸音
特性等の機能を追求したものであり、道路等に敷設した
場合の美観に対する配慮はなされていないものが多かっ
た。またセラミック多孔板の一部には着色されたものも
あるが、顔料を七゛ラミック粒子の外表面に付着させた
ものがほとんどであり、太陽光線にさらされたり歩行者
に踏まれたりすると短期間内に退色し易い欠点もあった
。(Prior art) Ceramic porous plates made by bonding ceramic fragments with water glass have been known as water-permeable pavement plates, etc., as shown in Japanese Patent Publication No. 62-20321, for example. Ceramic porous plates pursue functions such as water permeability, strength, and sound absorption properties, and in many cases, no consideration has been given to aesthetics when installed on roads, etc. Although some ceramic porous plates are colored, most of them have pigments attached to the outer surface of the seven-dimensional ceramic particles. It also had the disadvantage of being easily discolored.
（発明が解決しようとする課題）
本発明はこのような従来の問題点を解決して、磁器質粒
子の形状が丸味を帯びかつ粒径が比較的そろっているの
で気孔径もほぼそろっており、従って目詰まりが少なく
、透水性、強度等に極めて優れた機能を持つことは勿論
、退色しに＜＜シかも鮮明な外観を持つセラミック多孔
板を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves these conventional problems, and since the shape of the porcelain particles is rounded and the particle diameters are relatively uniform, the pore diameters are also almost uniform. Therefore, it was completed with the aim of creating a ceramic porous plate that is less prone to clogging and has extremely excellent functions such as water permeability and strength, as well as having a clear appearance that is resistant to fading.
（課題を解決するための手段）
上記の課題を解決するためになされた第１の発明は、セ
ラミック粒子を造粒して得られた磁器質粒子を、表面に
透明ガラスビーズを分散させた状態で樹脂バインダーに
より結合して多孔質板としたことを特徴とするものであ
る。また同一の課題を解決するためになされた第２の発
明は、セラミック粒子を造粒して得られた磁器質粒子を
樹脂バインダーにより結合した多孔質の基層の表面に、
着色顔料を含有した着色磁器質粒子の表面に透明ガラス
ビーズを分散させた状態で樹脂バインダーにより結合し
た多孔質のカラー表面層を一体的に固着したことを特徴
とするものである。更に第３の発明は、セラミック粒子
を造粒して得られた磁器質粒子をフラックスにより結合
した多孔質の基層の表面に、着色顔料を含有した着色磁
器質粒子の表面に透明ガラスビーズを分散させた状態で
樹脂バインダーにより結合した多孔質のカラー表面層を
一体的に固着したことを特徴とするものである。(Means for Solving the Problems) A first invention made to solve the above problems is a state in which porcelain particles obtained by granulating ceramic particles have transparent glass beads dispersed on their surfaces. It is characterized by being bonded with a resin binder to form a porous plate. A second invention made to solve the same problem is that porcelain particles obtained by granulating ceramic particles are bonded to the surface of a porous base layer using a resin binder.
It is characterized in that a porous colored surface layer is integrally fixed to the surface of colored porcelain particles containing a colored pigment, with transparent glass beads being dispersed therein and bound by a resin binder. Furthermore, the third invention is to disperse transparent glass beads on the surface of colored porcelain particles containing a colored pigment, on the surface of a porous base layer in which porcelain particles obtained by granulating ceramic particles are bonded by flux. It is characterized in that a porous color surface layer bonded by a resin binder is integrally fixed in a state where the color is in the same state as above.
以下に本発明を図面を参照しつつ実施例によって更に詳
細に説明する。Hereinafter, the present invention will be explained in more detail by way of examples with reference to the drawings.
（実施例）
第１図は第１の発明の実施例を示すもので、＋１１はセ
ラミック粒子を造粒して得られた磁器質粒子、（２）は
その表面に分散された透明ガラスビーズである。(Example) Figure 1 shows an example of the first invention, +11 is porcelain particles obtained by granulating ceramic particles, and (2) is transparent glass beads dispersed on the surface. be.
磁器質粒子＋１１を製造するには、まず窯業原料や汚泥
等を適当な組成となるよう調整し、水分が１２〜１６％
となるように水分を添加し混練したうえで直径が１〜５
ｆｉのヌードル状となるように押出す。To manufacture porcelain particles +11, first adjust ceramic raw materials, sludge, etc. to an appropriate composition until the moisture content is 12 to 16%.
Add water and knead so that the diameter is 1 to 5.
Extrude it into a fi noodle shape.
これを切断し造粒機によって直径が１〜５ ｘｍの球状
粒子に造粒成形し、サヤに詰めて１１００〜１３００℃
の温度で焼成して磁器質粒子（１）を得る。なお、磁器
質粒子の造粒には、前記ヌードル状のものを１〜５日に
切断した棒状造粒物であっても、あるいは皿形造粒機で
球状に造粒したものであっても勿論よい、このような磁
器質粒子（１）１００重量部に対して硬化剤および促進
剤を予じめ混合したエポキシ系あるいはポリエステル系
の樹脂バインダー７〜１０重量部を混合し、型に流し込
んで填圧後４０〜８５℃で硬化させれば第１図に示すよ
うな多孔質板（３）となるが、本発明においては型の底
部に予め透明ガラスビーズ（２）を散布しておき、その
上から磁器質粒子＋１１を充填するか、あるいは磁器質
粒子（１）を型に充填後透明ガラスビーズを表面上に散
布することによって、図示のように表面に透明ガラスビ
ーズ（２）が分散されたセラミック多孔板となる。This is cut and granulated into spherical particles with a diameter of 1 to 5 x m using a granulator, packed in a pod and heated to 1100 to 1300°C.
Porcelain particles (1) are obtained by firing at a temperature of . In addition, the porcelain particles may be granulated by rod-shaped granules obtained by cutting the noodle-shaped particles within 1 to 5 days, or by granulating them into spherical shapes using a dish-shaped granulator. Of course, 100 parts by weight of such porcelain particles (1) are mixed with 7 to 10 parts by weight of an epoxy or polyester resin binder pre-mixed with a curing agent and an accelerator, and the mixture is poured into a mold. If it is cured at 40 to 85°C after pressure filling, it will become a porous plate (3) as shown in Fig. 1, but in the present invention, transparent glass beads (2) are sprinkled on the bottom of the mold in advance, Transparent glass beads (2) are dispersed on the surface as shown in the figure, either by filling the porcelain particles +11 from above or by scattering transparent glass beads on the surface after filling the porcelain particles (1) into a mold. It becomes a ceramic porous plate.
透明ガラスビーズ（２）としては市販されているものを
用いればよく、その粒度は特に限定されるものではない
が、磁器質粒子（１１とほぼ同程度のものでもよい０本
発明においては磁器質粒子（１１を樹脂バインダーによ
り結合する際に透明ガラスビーズ（２）も樹脂バインダ
ーにより同時にその表面に結合される。なお透明ガラス
ビーズ（２）の量は磁器質粒子ｆｌ＋の２〜ｌＯ％程度
とするのが普通であるが、ガラスビーズ（２）の量が多
くなれば、ガラスビーズと樹脂バインダーとを予じめ混
合したものを用いるとよい。また多孔質板（３）は開気
孔率が３５〜４５％程度のものとしておけば、透水性と
吸音性に優れたものとなる。As the transparent glass beads (2), commercially available ones may be used, and the particle size is not particularly limited. When the particles (11) are bonded with the resin binder, the transparent glass beads (2) are also bonded to the surface thereof with the resin binder at the same time.The amount of the transparent glass beads (2) is approximately 2 to 10% of the porcelain particles fl+. However, if the amount of glass beads (2) is large, it is better to use a mixture of glass beads and a resin binder in advance.Also, the porous plate (3) has a low open porosity. If it is about 35 to 45%, it will have excellent water permeability and sound absorption.
第２図は第１図に示されたような多孔質板（３）の下面
に透明ガラスビーズを含まない多孔質板（４）、（５）
を積層した例を示すものである。この場合には下層とな
るほど粒子径を大きく従って、気孔径を大きくしておけ
ばより優れた透水性と目詰まり防止効果とが得られるこ
ととなる。Figure 2 shows porous plates (4) and (5) that do not contain transparent glass beads on the lower surface of the porous plate (3) as shown in Figure 1.
This shows an example of stacking. In this case, if the particle size is made larger toward the lower layer, and the pore size is made larger, better water permeability and clogging prevention effect can be obtained.
このように構成された第１の発明のセラミック多孔板は
透水性や強度に優れることは勿論、その表面に透明ガラ
スビーズ（２１が分散されているので光線の再帰反射性
を有し、表面がキラキラと光って美しい外観を呈するも
のである。The ceramic porous plate of the first invention configured in this way not only has excellent water permeability and strength, but also has transparent glass beads (21) dispersed on its surface, so it has retroreflectivity of light rays, and the surface has excellent water permeability and strength. It shines brightly and has a beautiful appearance.
第３図は第２の発明の実施例を示すもので、基層（１１
とカラー表面層αＤとからなるものである。基層α傷は
第１の実施例と同様にセラミック粒子を造粒して得られ
た磁器質粒子ｆｉ＋を樹脂“バインダーにより結合した
多孔質体である。またカラー表面層０υは、造粒前の原
料調合時の段階において１〜３（重量）％の任意の着色
顔料を含有させ、以下前記と同様の工程によって造粒、
焼成して得られた着色磁器質粒子側と、その表面に分散
された透明ガラスビーズ（２）とからなるもので、この
ような着色磁器質粒子側と透明ガラスビーズ（２）とは
エポキシ系あるいはポリエステル系の樹脂バインダーに
よって多孔質状に結合されている。このカラー表面層θ
υの開気孔率も３５〜４５％程度のものとするのが適当
である。FIG. 3 shows an embodiment of the second invention, in which the base layer (11
and a color surface layer αD. The base layer α flaw is a porous body made by bonding porcelain particles fi+ obtained by granulating ceramic particles with a resin binder in the same manner as in the first embodiment. At the stage of raw material preparation, 1 to 3% (by weight) of any coloring pigment is included, and then granulation and granulation are carried out in the same steps as above.
It consists of colored porcelain particles obtained by firing and transparent glass beads (2) dispersed on the surface.The colored porcelain particles and transparent glass beads (2) are made of epoxy-based Alternatively, it is porously bonded with a polyester resin binder. This color surface layer θ
It is also appropriate that the open porosity of υ be approximately 35 to 45%.
このように構成された第２の発明のセラミック多孔板は
、透水性、目詰まり防止、強度等に優れることは勿論、
その表面にカラー表面Ｎ（１０が形成されているので外
観が極めて美しいものとなる。The ceramic porous plate of the second invention configured in this way is of course superior in water permeability, clogging prevention, strength, etc.
Since the color surface N (10) is formed on the surface, the appearance is extremely beautiful.
しかもこのカラー表面層ａυに用いられている着色磁器
質粒子α２は内部に着色顔料を含み全体が着色されたも
のであるから極めて安定で、太陽光にさらされたり歩行
者に踏まれたりした場合にも退色するおそれが全くない
、更にこのカラー表面層Ｑυは表面に透明ガラスビーズ
（２）を分散させたものであるから、光線をキラキラと
反射させるとともに、透明ガラスビーズ（２）を通して
下側の着色磁器質粒子＠を見るとより深い色調に見え、
極めて美しい外観となる。Furthermore, the colored porcelain particles α2 used in the colored surface layer aυ contain colored pigments inside and are colored throughout, making them extremely stable and even when exposed to sunlight or stepped on by pedestrians. Moreover, since this color surface layer Qυ has transparent glass beads (2) dispersed on its surface, it reflects the light glitteringly, and also allows the light to pass through the transparent glass beads (2) to the lower side. When you look at the colored porcelain particles @, the color appears deeper,
It has an extremely beautiful appearance.
第４図は第３の発明の実施例を示すもので、基層α〔を
フラックスにより結合した点が第２の発明とは異なる。FIG. 4 shows an embodiment of the third invention, which differs from the second invention in that the base layer α is bonded by flux.
このような基層α躊を製造するには、まず窯業原料や汚
泥等の粘土分を調整したうえでその１００重量部に対し
てフラックスを１０〜２０重量部、水ガラスを１〜２重
量部、ポリビニルアルコールを０．１〜０．３重量部（
着色の場合には着色顔料を１〜３重量部）それぞれ加え
、直径１〜５ｕの粒子に造粒する。これを乾燥したうえ
で保型剤溶液を加え、プレス機にて５〜１０ｋｇ／ｃｄ
の圧力で圧縮プレス成形する。しかる後、１１００−１
３００℃で焼成する。この結果、内在されていたフラッ
クス等が溶融し、個々の粒子間が強固に焼結し全体が一
体的に接続された多孔質の基層αΦとなる。このように
フラックスによって結合された基Ｉ Ｑｌは樹脂バイン
ダーにより結合したものに比較して耐候性に優れ、また
粒子の焼成と粒子間の焼結とを一度の焼成によって同時
に行え、燃料費等を節減できる効果もある。なお、基層
ａｌの成形については、前記のほかにセラミック粒子を
造粒することにより得られ磁器質粒子をフラックスによ
り多孔体に結合一体化したものでも勿論よい、なおりラ
ー表面層ａＤについては第３図に示される第２の発明と
同様であるので説明を省略する。また図面では複数の基
層α１が積層されているが、第３図のように単一の基層
Ｑｌとしてもよいことは言うまでもない。In order to manufacture such a base layer α, first, the clay content of ceramic raw materials and sludge is adjusted, and then, for 100 parts by weight, 10 to 20 parts by weight of flux, 1 to 2 parts by weight of water glass, 0.1 to 0.3 parts by weight of polyvinyl alcohol (
In the case of coloring, 1 to 3 parts by weight of a coloring pigment is added, and the particles are granulated into particles having a diameter of 1 to 5 u. After drying this, add a mold retention agent solution and use a press machine to produce 5 to 10 kg/cd.
Compression press molding at a pressure of After that, 1100-1
Fire at 300°C. As a result, the flux and the like contained therein are melted, and the individual particles are firmly sintered to form a porous base layer αΦ in which the whole is integrally connected. Groups IQl bonded by flux in this way have superior weather resistance compared to those bonded by resin binders, and can simultaneously perform particle sintering and interparticle sintering in one sintering process, reducing fuel costs, etc. It also has the effect of saving money. Regarding the forming of the base layer aD, it is of course possible to use a material obtained by granulating ceramic particles and integrating them into a porous body using flux. Since this is the same as the second invention shown in FIG. 3, the explanation will be omitted. Further, in the drawing, a plurality of base layers α1 are laminated, but it goes without saying that a single base layer Ql may be used as shown in FIG.
（発明の効果）
本発明は以上に説明したとおり、セラミック粒子を造粒
して得られた磁器質粒子を基層として用いているので気
孔径も比較的そろっており、透水性、目詰まり防止効果
、強度等に優れるとともに、表面に分散させた透明ガラ
スビーズの作用によって光線を反射するとともにより深
い色合いを呈するようになり、極めて外観が美しいもの
となる、特に第２及び第３の発明のように着色磁器質粒
子と組合せたものは深味のある色調効果が特に著しい、
また本発明のセラミック多孔板は退色のおそれがない色
調の安定性に優れたものであるから、透水性舗装板や着
色吸音板等として用いるに適したものである。よって本
発明は従来の問題点を一掃したセラミック多孔板として
、産業の発展に寄与するところは極めて大である。(Effects of the Invention) As explained above, the present invention uses porcelain particles obtained by granulating ceramic particles as the base layer, so the pore diameters are relatively uniform, which improves water permeability and prevents clogging. In addition to being excellent in strength, the transparent glass beads dispersed on the surface reflect light and exhibit a deeper hue, resulting in an extremely beautiful appearance, especially as in the second and third inventions. When combined with colored porcelain particles, the deep color tone effect is particularly remarkable.
Furthermore, since the porous ceramic plate of the present invention has excellent color stability without fear of fading, it is suitable for use as a water-permeable pavement board, a colored sound-absorbing board, and the like. Therefore, the present invention greatly contributes to the development of industry as a ceramic porous plate that eliminates the problems of the conventional art.
第１図は第１の発明の第１の実施例を示す断面図、第２
図はその第２の実施例を示す断面図、第３図は第２の発
明の実施例を示す断面図、第４図は第３の発明の実施例
を示す断面図である。
（ｌ）：磁器質粒子、（２）：透明ガラスビーズ、（３
）：多孔質板、αＩ：基層、０１１ ：カラー表面層、
０乃二着色磁器質粒子。
第
図FIG. 1 is a sectional view showing a first embodiment of the first invention;
The figure is a cross-sectional view showing the second embodiment, FIG. 3 is a cross-sectional view showing the second embodiment, and FIG. 4 is a cross-sectional view showing the third embodiment. (l): Porcelain particles, (2): Transparent glass beads, (3
): porous plate, αI: base layer, 011: color surface layer,
0-2 colored porcelain particles. Diagram
Claims (1)
）を、表面に透明ガラスビーズ（２）を分散させた状態
で樹脂バインダーにより結合して多孔質板（３）とした
ことを特徴とするセラミック多孔板。 ２、セラミック粒子を造粒して得られた磁器質粒子（１
）を樹脂バインダーにより結合した多孔質の基層（１０
）の表面に、着色顔料を含有した着色磁器質粒子（１２
）の表面に透明ガラスビーズ（２）を分散させた状態で
樹脂バインダーにより結合した多孔質のカラー表面層（
１１）を一体的に固着したことを特徴とするセラミック
多孔板。 ３、セラミック粒子を造粒して得られた磁器質粒子（１
）をフラックスにより結合した多孔質の基層（１０）の
表面に、着色顔料を含有した着色磁器質粒子（１２）の
表面に透明ガラスビーズ（２）を分散させた状態で樹脂
バインダーにより結合した多孔質のカラー表面層（１１
）を一体的に固着したことを特徴とするセラミック多孔
板。[Claims] 1. Porcelain particles obtained by granulating ceramic particles (1.
) is bonded with a resin binder with transparent glass beads (2) dispersed on its surface to form a porous plate (3). 2. Porcelain particles obtained by granulating ceramic particles (1
) is bonded with a resin binder to form a porous base layer (10
), colored porcelain particles containing colored pigments (12
) with transparent glass beads (2) dispersed on the surface of the porous color surface layer (
11) A ceramic porous plate characterized by being integrally fixed. 3. Porcelain particles obtained by granulating ceramic particles (1
) bonded with a flux to the surface of a porous base layer (10), and colored ceramic particles (12) containing colored pigments with transparent glass beads (2) dispersed on the surface of the porous base layer (10) bonded with a resin binder. Quality color surface layer (11
) is integrally fixed to the ceramic porous plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63169692A JPH0633188B2 (en) | 1988-07-07 | 1988-07-07 | Ceramic perforated plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63169692A JPH0633188B2 (en) | 1988-07-07 | 1988-07-07 | Ceramic perforated plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0222181A true JPH0222181A (en) | 1990-01-25 |
| JPH0633188B2 JPH0633188B2 (en) | 1994-05-02 |
Family
ID=15891124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63169692A Expired - Lifetime JPH0633188B2 (en) | 1988-07-07 | 1988-07-07 | Ceramic perforated plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633188B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1180763A2 (en) * | 2000-08-15 | 2002-02-20 | Mitsubishi Heavy Industries, Ltd. | Ceramic sound absorbing material and manufacturing method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05323885A (en) * | 1992-05-20 | 1993-12-07 | Chiiki Design Center:Kk | Three-dimensional advertisement method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60135317U (en) * | 1984-02-20 | 1985-09-09 | 東北ポ−ル株式会社 | concrete blocks for paving |
-
1988
- 1988-07-07 JP JP63169692A patent/JPH0633188B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60135317U (en) * | 1984-02-20 | 1985-09-09 | 東北ポ−ル株式会社 | concrete blocks for paving |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1180763A2 (en) * | 2000-08-15 | 2002-02-20 | Mitsubishi Heavy Industries, Ltd. | Ceramic sound absorbing material and manufacturing method therefor |
| EP1180763A3 (en) * | 2000-08-15 | 2003-03-12 | Mitsubishi Heavy Industries, Ltd. | Ceramic sound absorbing material and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633188B2 (en) | 1994-05-02 |
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