JPS6213315B2 - - Google Patents
Info
- Publication number
- JPS6213315B2 JPS6213315B2 JP5557279A JP5557279A JPS6213315B2 JP S6213315 B2 JPS6213315 B2 JP S6213315B2 JP 5557279 A JP5557279 A JP 5557279A JP 5557279 A JP5557279 A JP 5557279A JP S6213315 B2 JPS6213315 B2 JP S6213315B2
- Authority
- JP
- Japan
- Prior art keywords
- inorganic
- foamed
- panel
- materials
- fiber sheet
- 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
- 239000000463 material Substances 0.000 claims description 21
- 239000010954 inorganic particle Substances 0.000 claims description 10
- 239000012784 inorganic fiber Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 229940037003 alum Drugs 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229910001562 pearlite Inorganic materials 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 235000019353 potassium silicate Nutrition 0.000 description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 239000010451 perlite Substances 0.000 description 6
- 235000019362 perlite Nutrition 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 239000010425 asbestos Substances 0.000 description 4
- 235000013312 flour Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 239000012047 saturated solution Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000011126 aluminium potassium sulphate Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229940050271 potassium alum Drugs 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Panels For Use In Building Construction (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明はケイ酸質産業廃棄物のフエロシリコン
ダスト等のフエロアロイダストと水ガラス等のケ
イ酸アルカリを主材料とし、これに副材料とし
て、明ばん、消石灰及びホウ酸アルカリ、アルミ
ン酸ソーダ、水酸化アルミ、硫酸バリウム、各種
リン酸塩並びにベントナイトのうち、少なくとも
１種以上を適量加え、混練してなるスラリー状の
粘結材を用いて発泡パーライト、発泡バーミキユ
ライト、シラスバルーン、泡ガラス等の発泡無機
物を相互に粘結せしめたものを、型枠によつて板
状に成形し、その一面または両面に無機繊維シー
トを貼着して焼成してなる無機軽量パネルに関わ
る。Detailed Description of the Invention The present invention uses ferroalloy dust such as ferrosilicon dust, which is a silicic acid industrial waste, and an alkali silicate such as water glass as the main materials, and also contains alum and slaked lime as auxiliary materials. Foamed perlite, foamed using a slurry-like caking agent made by adding and kneading an appropriate amount of at least one of alkali borate, sodium aluminate, aluminum hydroxide, barium sulfate, various phosphates, and bentonite. Foamed inorganic materials such as vermiculite, shirasu balloons, and foamed glass are bonded together, formed into a plate using a mold, an inorganic fiber sheet is attached to one or both sides of the plate, and then fired. Involved in inorganic lightweight panels.
近年建築材料の不燃化、軽量化が要求されるよ
うになり、各種の無機建材が市販されるようにな
つてきたが、重量と強度との関係において劣るも
のが多く、実用上大きな問題点となつている。 In recent years, there has been a demand for building materials to be nonflammable and lightweight, and various inorganic building materials have become commercially available, but many of them are inferior in terms of weight and strength, which poses a major problem in practical use. It's summery.
本発明は、これらの欠点を解消すべく、多年に
わたり研究の結果完成した無機軽量パネルであ
る。 The present invention is an inorganic lightweight panel completed as a result of many years of research in order to eliminate these drawbacks.
主材料の一はフエロアロイダストであるが、こ
れはフエロシリコン製造工業における産業廃棄物
であり、主成分は反応性に富む無定形二酸化ケイ
素であり、白色乃至灰白色の微粉である。 One of the main materials is ferroalloy dust, which is industrial waste from the ferrosilicon manufacturing industry.The main component is amorphous silicon dioxide, which is highly reactive, and is a white to gray-white fine powder.
本発明は、まず上記のフエロアロイダストと水
ガラス等のケイ酸アルカリとを主材料とし、これ
に副材料として、明ばん、消石灰、及びホウ酸ア
ルカリ、アルミン酸ソーダ、水酸化アルミ、硫酸
バリウム、ベントナイト並びにリン酸塩のうち、
１種又は２種以上及び適量の水を加え、均一にな
るまで混練したスラリー状の混練液を作る。つい
でこれに発泡パーライト、発泡バーミキユライ
ト、シラスバルーン等の発泡無機粒子の１種又は
２種以上を投入し、十分に混練して、発泡無機粒
子の表面全面に混練液を付着せしめる。 The present invention first uses the above-mentioned ferroalloy dust and an alkali silicate such as water glass as main materials, and also contains alum, slaked lime, alkali borate, sodium aluminate, aluminum hydroxide, and sulfuric acid as auxiliary materials. Among barium, bentonite and phosphates,
One or more types and an appropriate amount of water are added and kneaded until uniform to create a slurry-like kneading solution. Next, one or more types of foamed inorganic particles such as foamed perlite, foamed vermiculite, and shirasu balloons are added to the mixture and sufficiently kneaded to cause the kneading liquid to adhere to the entire surface of the foamed inorganic particles.
次にこれを、予め布置した石綿布、又はグラス
フアイバーシート等の無機繊維シートを型枠中に
入れ、上から均等な圧力を加えて成型を行つたの
ち、型枠よりとりはずし、又は型枠に入れたまま
焼結炉の中に入れ、200℃〜500℃にて10〜30分間
焼結固化して完成する。 Next, place the asbestos cloth or inorganic fiber sheet such as glass fiber sheet into the mold, which has been placed in advance, and form it by applying even pressure from above, then remove it from the mold or place it in the mold. Place it in a sintering furnace and sinter and solidify it at 200°C to 500°C for 10 to 30 minutes.
又別法として、成型した混練物をまず、高周波
加熱炉中で200〜400℃にて５〜10分間加熱硬化せ
しめたのち、焼結炉中で300〜600℃、10〜20分間
焼結してもよい。 Alternatively, the molded kneaded material is first hardened by heating at 200 to 400°C for 5 to 10 minutes in a high-frequency heating furnace, and then sintered in a sintering furnace at 300 to 600°C for 10 to 20 minutes. It's okay.
いづれの場合においても、焼結後型枠より取り
はずすと、発泡無機粒子が強固に連結硬化し、無
機繊維シートが確実に一体化されたパネルが完成
する。 In either case, when removed from the formwork after sintering, the expanded inorganic particles are firmly connected and cured, and a panel with the inorganic fiber sheet reliably integrated is completed.
このパネルを図面について説明すると、第１図
は本発明の１実施例の断面図であるが、１は発泡
無機粒子であり、２は発泡無機粒子１の粒子相互
を連結硬化した粘結材である。３はパネルの両面
を補強した無機繊維シートである。 To explain this panel with reference to the drawings, Fig. 1 is a cross-sectional view of one embodiment of the present invention, in which 1 is a foamed inorganic particle, and 2 is a caking material that is made by connecting and hardening the particles of the foamed inorganic particle 1. be. 3 is an inorganic fiber sheet reinforced on both sides of the panel.
このパネルは、主材料と副材料とが高温により
３次元的な化学反応を起こして硬化した粘結材２
が、発泡無機粒子１を相互に強固に接着連結せし
めており、かつ無機繊維シート３は確実に貼着さ
れ、全体として表面硬度の大きい均質で軽量な無
機パネルを形成している。 This panel is made of caking material 2, which is hardened by a three-dimensional chemical reaction between the main material and the sub-material at high temperatures.
However, the foamed inorganic particles 1 are firmly adhesively connected to each other, and the inorganic fiber sheet 3 is firmly attached, forming a homogeneous and lightweight inorganic panel with a high surface hardness as a whole.
パネルの見掛け比重は、主材料、副材料及び発
泡無機粒子１の種類及び配合比によつて異なる
が、大凡0.3〜0.5であり、きわめて軽量である。
その防火性はきわめてよく、発泡無機粒子１はセ
ラミツク状の微細な独立気泡を内蔵するほか、粘
結材２も焼結時に含有するケイ酸アルカリによつ
て、微細な独立気泡を発生するので、全体として
不燃耐火性の無機質の断熱層を形成するため、パ
ネルの１面が加熱されたときでも反対側の他面へ
熱を伝えることがきわめておそく、さらに高温に
熱せられたときは、発泡無機粒子１の内部がセラ
ミツク化して粘結材２の表面を覆うので、すぐれ
た耐火性を発揮することができる。 The apparent specific gravity of the panel is approximately 0.3 to 0.5, although it differs depending on the type and blending ratio of the main material, auxiliary material, and expanded inorganic particles 1, and is extremely lightweight.
Its fire retardant properties are extremely good, and the foamed inorganic particles 1 contain ceramic-like fine closed cells, and the caking material 2 also generates fine closed cells due to the alkali silicate it contains during sintering. As the entire panel forms a non-combustible, fire-resistant inorganic heat insulating layer, even when one side of the panel is heated, heat transfer to the other side on the opposite side is extremely slow. Since the inside of the particles 1 becomes ceramic and covers the surface of the caking material 2, excellent fire resistance can be exhibited.
実施例 １
水ガラス３号 100重量部
シリカフラワー 60 〃
カリ明ばん飽和溶液 10 〃
消石灰飽和溶液 20 〃
上記材料を混合し、均一に混練し、スラリー状
にする。このなかに発泡パーライト（東邦パーラ
イトNo.４）120重量部を投入し、混合する。つい
で予め底に石綿シートをひいた型枠中に混合物を
注入すると共に、注入後の外表面にも石綿シート
をひいて厚さ25ミリのパネル状に成型したのち、
焼結炉にて400℃、10分間焼結する。Example 1 Water glass No. 3 100 parts by weight Silica flour 60 〃 Potash alum saturated solution 10 〃 Slaked lime saturated solution 20 〃 The above materials are mixed and kneaded uniformly to form a slurry. 120 parts by weight of expanded perlite (Toho Perlite No. 4) was added to this and mixed. Next, the mixture was injected into a mold whose bottom had been lined with an asbestos sheet in advance, and an asbestos sheet was also placed on the outside surface after injection to form a panel with a thickness of 25 mm.
Sinter at 400℃ for 10 minutes in a sintering furnace.
得られたパネルは、比重0.35〜0.38であり、圧
縮強度３〜５Kg／cm2、すぐれた防火性を示した。 The obtained panel had a specific gravity of 0.35 to 0.38, a compressive strength of 3 to 5 Kg/cm 2 , and exhibited excellent fire resistance.
実施例 ２
水ガラス３号 100重量部
シリカフラワー 60 〃
ホウ酸アルカリ 20 〃
カリ明ばん飽和溶液 20 〃
水 10 〃
上記材料を実施例１と同様方法により、パネル
を製造した。Example 2 Water glass No. 3 100 parts by weight Silica flour 60 Alkali borate 20 Potassium alum saturated solution 20 Water 10 A panel was manufactured using the above materials in the same manner as in Example 1.
得られたパネルは比重0.41〜0.44、圧縮強度３
〜５Kg／cm2であり、すぐれた防火性を示した。 The resulting panels have a specific gravity of 0.41-0.44 and a compressive strength of 3.
~5Kg/cm 2 , demonstrating excellent fire resistance.
実施例 ３
水ガラス１号 50重量部
シリカフラワー 60 〃
アルミン酸ソーダ 10 〃
水 50 〃
上記材料を混合したものに、発泡パーライト
（東邦パーライトNo.５）60部を入れ混練した。こ
の混練物を実施例１と同様に型枠に入れ、厚さ20
ミリのパネルに成型後、高周波加熱炉中に入れ、
250℃、10分間加熱硬化せしめたのち焼結炉に移
し、400℃、５分間加熱した。Example 3 Water glass No. 1 50 parts by weight Silica flour 60 Sodium aluminate 10 Water 50 60 parts of expanded perlite (Toho Perlite No. 5) was added to the mixture of the above materials and kneaded. This kneaded material was placed in a mold in the same manner as in Example 1, and the thickness was 20 mm.
After molding into millimeter-sized panels, they are placed in a high-frequency heating furnace.
After being heated and hardened at 250°C for 10 minutes, it was transferred to a sintering furnace and heated at 400°C for 5 minutes.
得られたパネルは比重0.40〜0.45、圧縮強度２
〜５Kg／cm3であつた。 The resulting panels have a specific gravity of 0.40-0.45 and a compressive strength of 2
It was ~5Kg/ cm3 .
実施例 ４ 水ガラス１号 50重量部 シリカフラワー 60 〃 水酸化アルミ 10 〃 硫酸バリウム 10 〃 水 50 〃 製造法は実施例３と同じ。Example 4 Water glass No. 1 50 parts by weight Silica flower 60〃 Aluminum hydroxide 10〃 Barium sulfate 10〃 Water 50〃 The manufacturing method is the same as in Example 3.
得られたパネルは比重0.41〜0.45、圧縮強度３
〜５Kg／cm3であつた。 The resulting panels have a specific gravity of 0.41-0.45 and a compressive strength of 3
It was ~5Kg/ cm3 .
実施例 ５
水ガラス３号 100重量部
シリカフラワー 60 〃
ベントナイト 15 〃
カリ明ばん飽和溶液 15 〃
製造法は実施例３と同じ。ただしパネルの両面
に石綿シートのかわりにガラス繊維シート（厚さ
１ミリ）を接着せしめた。Example 5 Water Glass No. 3 100 parts by weight Silica flour 60 Bentonite 15 Potassium alum saturated solution 15 The manufacturing method is the same as in Example 3. However, instead of asbestos sheets, glass fiber sheets (1 mm thick) were glued to both sides of the panel.
得られたパネルは比重0.43〜0.48、圧縮強度３
〜５Kg／cm2であつた。 The resulting panels have a specific gravity of 0.43-0.48 and a compressive strength of 3
It was ~5Kg/ cm2 .
実施例 ６ 水ガラス３号 100重量部 シリカフラワー 60 〃 リン酸カルシウム 10 〃 製造法は実施例５と同じ。Example 6 Water glass No. 3 100 parts by weight Silica flower 60〃 Calcium phosphate 10〃 The manufacturing method is the same as in Example 5.
得られたパネルは比重0.40〜0.45、圧縮強度３
〜５Kg／cm2であつた。 The resulting panels have a specific gravity of 0.40-0.45 and a compressive strength of 3.
It was ~5Kg/ cm2 .
第１図は本発明の無機軽量パネルの１実施例の
断面図。
１……発泡無機粒子、２……粘結材、３……無
機繊維シート。
FIG. 1 is a sectional view of one embodiment of the inorganic lightweight panel of the present invention. 1... Foamed inorganic particles, 2... Caking material, 3... Inorganic fiber sheet.
Claims (1)
料とし、これに副材料として、明ばん、消石灰、
ホウ酸アルカリ、アルミン酸ソーダ、水酸化アル
ミ、硫酸バリウム、各種リン酸塩、ベントナイト
のうち少なくとも１種以上を加え、混練したスラ
リー状の粘結材を用いて発泡パーライト等の発泡
無機粒子を粘結せしめると共に、一面または両面
に無機繊維シートを貼着してパネル状に成型し、
その後焼結することにより一体に形成したことを
特徴とする無機軽量パネル。1 The main materials are ferroalloy dust and alkali silicate, and the secondary materials are alum, slaked lime,
Foamed inorganic particles such as foamed pearlite are made into viscosity by using a slurry-like caking agent mixed with at least one of alkali borate, sodium aluminate, aluminum hydroxide, barium sulfate, various phosphates, and bentonite. At the same time as binding, an inorganic fiber sheet is attached to one or both sides and formed into a panel.
An inorganic lightweight panel characterized by being integrally formed by sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5557279A JPS55149155A (en) | 1979-05-07 | 1979-05-07 | Inorganic lightweight panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5557279A JPS55149155A (en) | 1979-05-07 | 1979-05-07 | Inorganic lightweight panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55149155A JPS55149155A (en) | 1980-11-20 |
| JPS6213315B2 true JPS6213315B2 (en) | 1987-03-25 |
Family
ID=13002427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5557279A Granted JPS55149155A (en) | 1979-05-07 | 1979-05-07 | Inorganic lightweight panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55149155A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020026227A (en) * | 2002-02-27 | 2002-04-06 | 조성균 | Ceramic Bonding Mechanics of yellow clay and Carbon black members. |
| JP5586041B2 (en) * | 2009-08-24 | 2014-09-10 | 東興パーライト工業株式会社 | Manufacturing method of ceramics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5361606A (en) * | 1976-11-15 | 1978-06-02 | Ishikawa Takashi | Inorganic foaming material |
-
1979
- 1979-05-07 JP JP5557279A patent/JPS55149155A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5361606A (en) * | 1976-11-15 | 1978-06-02 | Ishikawa Takashi | Inorganic foaming material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55149155A (en) | 1980-11-20 |
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