JPH0570169A - Production of glass product - Google Patents
Production of glass productInfo
- Publication number
- JPH0570169A JPH0570169A JP30727691A JP30727691A JPH0570169A JP H0570169 A JPH0570169 A JP H0570169A JP 30727691 A JP30727691 A JP 30727691A JP 30727691 A JP30727691 A JP 30727691A JP H0570169 A JPH0570169 A JP H0570169A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- glass product
- ultraviolet rays
- light
- product
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000002834 transmittance Methods 0.000 claims description 8
- 238000011161 development Methods 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 abstract description 20
- 239000004332 silver Substances 0.000 abstract description 19
- 230000001678 irradiating effect Effects 0.000 abstract description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 abstract description 2
- 230000000873 masking effect Effects 0.000 abstract description 2
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0005—Other surface treatment of glass not in the form of fibres or filaments by irradiation
- C03C23/002—Other surface treatment of glass not in the form of fibres or filaments by irradiation by ultraviolet light
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、選択された部分に、選
択された方向で、光の異なる透過性を付与した硝子製品
の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a glass product in which selected portions are provided with different light transmittance in selected directions.
【０００２】[0002]
【従来の技術】従来、硝子製品は、ルツボを使用して生
産する人工生産工場を除き、大きなタンク炉にてガラス
を溶融し、生産されている。従って、硝子製品は、均一
な性質及び特性を有するのが、一般的であり、この硝子
製品に対して、何等かの機能付与等を実施する方法とし
ては、（１）成形前の硝子に他の性質（例えば色ガラ
ス）を有する硝子を添加して、合わせ硝子、又はマンダ
ラ模様入り硝子を生産する方法、（２）低融点硝子等を
硝子製品表面に付着させて、加熱焼付して装飾及びマー
キングする方法、（３）硝子製品表面をマスキングして
於いて、弗酸等による化学的腐食法、又はサンドブラス
ト法による方法でのマーキング及び装飾方法、（４）或
いは、板硝子を窓に使用する場合には、ブラインドーや
カーテンにて、採光、遮蔽効果を求める方法等が実施さ
れている。しかし、これらの方法は、硝子の表面加工的
内容か、又は硝子自体の加工法ではあるが、精度の悪い
内容であるか、或いは別の手段でその機能を補ってい
た。2. Description of the Related Art Conventionally, glass products are produced by melting glass in a large tank furnace, except for an artificial production factory where crucibles are used. Therefore, glass products generally have uniform properties and characteristics. As a method for giving some function to this glass product, (1) other than glass before molding, A method of producing a laminated glass or a glass with a mandala pattern by adding glass having the properties of (for example, colored glass), (2) attaching a low melting point glass or the like to the surface of a glass product and heating and baking it for decoration and Marking method, (3) Marking and decorating method by chemical corrosion method with hydrofluoric acid or sandblasting method after masking the glass product surface, (4) or when using plate glass for window For example, the method of obtaining the lighting and the shielding effect by a blind or a curtain is implemented. However, these methods are the contents of the surface processing of the glass, or the contents of the glass itself are not accurate, or the function is supplemented by another means.
【０００３】[0003]
【発明が解決しようとする課題】本願発明者は、硝子に
機能を付与する方法を種々検討して、本願発明を完成さ
せたものである。即ち、本願発明は、硝子表面を加工す
るものでなく、硝子自体の性質を変質させるものであ
り、選択的な方向への硝子の光透過性を改良するもので
ある。The inventor of the present application has studied various methods for imparting a function to glass and has completed the present invention. That is, the present invention does not process the glass surface, but changes the properties of the glass itself, and improves the light transmittance of the glass in a selective direction.
【０００４】[0004]
【課題を解決するための手段】本願発明者は、銀が硝子
中において紫外線を照射後熱処理すると、着色すること
に着目して、銀と併用する成分を種々検討して、本願発
明を完成させたものである。即ち、本願発明は、「銀を
Ａｇ２Ｏ表示で０．００５〜０．５重量％、錫をＳｎＯ
表示で０〜０．５重量％を必須成分として含有する硝子
に於いて、硝子製品の選択的部分を紫外線遮蔽材でマス
キングし、紫外線を任意の角度から照射後、熱処理し
て、紫外線を照射されなかった部分の発色を抑制し、該
部分に光の異なる透過性を付与した硝子製品の製造方
法。」である。Means for Solving the Problems The inventors of the present application have completed the present invention by studying various components used in combination with silver, paying attention to the fact that silver is colored when it is heat-treated in glass after being irradiated with ultraviolet rays. It is a thing. That is, the invention of the present application is "0.005 to 0.5% by weight of Ag in terms of Ag 2 O and Sn of SnO.
In the glass containing 0 to 0.5% by weight as an essential component, the selective part of the glass product is masked with a UV shielding material, irradiated with UV rays from an arbitrary angle, and then heat-treated and irradiated with UV rays. A method for producing a glass product, which suppresses color development of a part which has not been subjected to light, and imparts different light transmittance to the part. It is.
【０００５】本願発明は、銀と併用する成分を種々検討
して、完成させたものであり、基本的には、硝子中に銀
の金属コロイドを均一に分散させて発色させることによ
って、従来の問題点を解決したのである。このために使
用する銀と併用する成分としては、硝子中において２種
類以上の原子価を取ることの出来る多原子価元素である
必要がある。一般に硝子原料として使用される多原子価
元素としては、例えば、酸化錫、酸化アンチモン、酸化
セリウム等が知られている。The present invention has been completed by studying various components to be used in combination with silver. Basically, a metallic colloid of silver is uniformly dispersed in glass to develop a color. The problem was solved. The component used in combination with silver used for this purpose must be a polyvalent element capable of taking two or more types of valence in glass. As a polyvalent element generally used as a glass raw material, for example, tin oxide, antimony oxide, cerium oxide, etc. are known.
【０００６】前記の通り、硝子中において、銀と多原子
価元素とを共存させる事によって、銀は多原子価元素に
価電子を与えて、金属コロイドとなり、銀発色し、黄色
或いは橙色の発色をするのである。この「銀が多原子価
元素に価電子を与える」作用は、硝子に紫外線を照射
後、熱処理することによって、達成される。又、銀と多
原子価元素とを共存させると、硝子中への銀の溶解度を
増加させる作用があり、硝子の発色に濃淡を必要とする
場合には銀の含有量が多いと、好都合なことが多い。As described above, by allowing silver and a polyvalent element to coexist in the glass, silver gives valence electrons to the polyvalent element to form a metal colloid, which causes silver to develop a yellow or orange color. To do. The action of “silver gives valence electrons to the polyvalent element” is achieved by irradiating the glass with ultraviolet rays and then performing heat treatment. Also, the coexistence of silver and a polyvalent element has the effect of increasing the solubility of silver in glass, and when the tint is required for the color development of glass, a high silver content is advantageous. Often.
【０００７】本発明において、「銀をＡｇ２Ｏ表示で
０．００５〜０．５重量％、錫をＳｎＯ表示で０〜０．
５重量％を必須成分として含有する硝子に於いて、硝子
製品の選択的部分を紫外線遮蔽材でマスキングし、紫外
線を任意の角度から照射後、熱処理して、紫外線を照射
されなかった部分の発色を抑制し、該部分に光の異なる
透過性を付与した硝子製品の製造方法。」としたのは、
次の通りである。銀をＡｇ２Ｏ表示で０．００５〜０．
５重量％としたのは、一般に銀の着色は、０．００５重
量％程度の含有量で認められ為に、下限含有量を０．０
０５重量％とし、上限含有量としては、数％まで実施可
能であるが、銀の価格が高価であり０．５重量％までの
添加で充分の為、０．５重量％とした。又、錫原料をＳ
ｎＯ表示で０〜０．５重量％としたのは、多原子価元素
の内で硝子には、ＳｎＯが最も使い易く、経済的であっ
たので、ＳｎＯを選び、「０〜０．５重量％」としたの
は、硝子の性質、溶融条件によっては、ＳｎＯを使用し
なくてもよい場合がある為に０％からとし、０．５重量
％以上は必要ない為に、０．５重量％以下とした。In the present invention, "silver is 0.005 to 0.5% by weight in terms of Ag 2 O and tin is 0 to 0.
In the glass containing 5% by weight as an essential component, the selective part of the glass product is masked with an ultraviolet shielding material, and after the ultraviolet ray is irradiated from an arbitrary angle, it is heat-treated to develop the color of the portion not irradiated with the ultraviolet ray. And a method for producing a glass product, in which the different light transmittance is imparted to the portion. ”
It is as follows. Silver is expressed as Ag 2 O in an amount of 0.005 to 0.
The reason why the content is set to 5% by weight is that since coloring of silver is generally recognized at a content of about 0.005% by weight, the lower limit content is 0.0
The upper limit content is set to 0.5% by weight, but the upper limit content can be up to several%, but the price of silver is expensive and addition up to 0.5% by weight is sufficient. Also, tin raw material is S
The nO display was set to 0 to 0.5% by weight because SnO was the most convenient and economical for glass among the polyvalent elements, so SnO was selected and "0 to 0.5% by weight" was selected. "%" Is defined as 0% because there is a case where SnO may not be used depending on the properties of glass and melting conditions, and 0.5% by weight or more is not necessary. % Or less.
【０００８】次に、「硝子製品の選択的部分を紫外線遮
蔽材でマスキングし、紫外線を任意の角度から照射後、
熱処理して、紫外線を照射されなかった部分の発色を抑
制し、該部分に光の異なる透過性を付与した硝子製品の
製造方法。」としたのは、その因果関係は良く解らない
が、本願発明の硝子に、紫外線を照射すると、硝子中の
銀が励起状態となり、次の熱処理の段階に於いて、銀と
多原子価元素との間で、電子の移動を容易にして、良好
な結果が得られるからであると推定している。又、「紫
外線を任意の角度から照射」するとしたのは、この点が
本願発明の重要なポイントであり、本願発明の硝子は、
紫外線が照射された部分の発色が促進されて、紫外線が
照射されなかった部分は発色が阻害されるので、製品に
紫外線が照射される方向から見ると、マスキングにて紫
外線が照射されていない部分は殆ど発色していないた
め、光透過性が高く、紫外線が照射されている部分は光
透過性が減少している。この性質を利用して、通常の硝
子製品に、隠し模様、直射光遮蔽機能等を付与した硝子
製品を製造する方法を発明し、本願発明にした。以下、
実施例を説明して、本発明を明らかにする。Next, "a selective portion of the glass product is masked with an ultraviolet shielding material, and after irradiating ultraviolet rays from an arbitrary angle,
A method for producing a glass product, which is heat-treated to suppress color development of a portion which is not irradiated with ultraviolet rays and imparts different light transmittance to the portion. Although the causal relationship is not well understood, when the glass of the present invention is irradiated with ultraviolet rays, silver in the glass is in an excited state, and silver and the polyvalent element are added in the next heat treatment step. It is presumed that this is because the transfer of electrons is facilitated between and to obtain good results. In addition, the fact that "irradiate ultraviolet rays from an arbitrary angle" is an important point of the present invention, and the glass of the present invention is
Color development is accelerated in the part that is exposed to ultraviolet light, and color development is blocked in the part that is not exposed to ultraviolet light. Has almost no color, and therefore has high light transmittance, and the light transmittance is reduced in the portion irradiated with ultraviolet rays. Utilizing this property, a method of manufacturing a glass product in which a hidden pattern, a direct light shielding function, and the like are added to a normal glass product has been invented and made the present invention. Less than,
The invention is elucidated by describing examples.
【０００９】[0009]
【実施例１】 １）硝子板の作製 ＳｉＯ２ ７１．５重量％（以下同じ）、Ａｌ２Ｏ３
２．０％、Ｎａ２Ｏ １４．５％、ＣａＯ １０．５
％、ＳＯ３ ０．２５％、Ａｇ２Ｏ ０．０１５％、Ｓ
ｎＯ ０．０４％になる様に調合したバッチを、内容量
２ｋｇの粘土質ルツボに満杯に入れて、酸素雰囲気５％
のガス炉で、１４００℃−３時間の条件で溶融した。溶
融後、硝子を黒鉛板上に流し、約１０〜１１ｍｍ厚、約
１００ｍｍ×約１００ｍｍの板状に成形した。この硝子
板を１０ｍｍ厚に光学研磨してサンプルとした。Example 1 1) Preparation of glass plate 71.5% by weight of SiO 2 (hereinafter the same), Al 2 O 3
2.0%, Na 2 O 14.5%, CaO 10.5
%, SO 3 0.25%, Ag 2 O 0.015%, S
A batch prepared so that the content of nO was 0.04% was put into a clay crucible having an internal capacity of 2 kg, and the oxygen atmosphere was 5%.
Melted under the conditions of 1400 ° C.-3 hours in the gas furnace. After melting, glass was cast on a graphite plate to form a plate having a thickness of about 10 to 11 mm and a size of about 100 mm × about 100 mm. This glass plate was optically polished to a thickness of 10 mm to obtain a sample.
【００１０】前項にて得られたサンプルに、紫外線遮蔽
樹脂をスクリーン印刷法にて、１０ｍｍ間隔に５ｍｍ幅
の帯状の印刷を縞状にした。このサンプルに島津製作所
製加速暴露試験機にて、８００ｍμ以下の紫外線を含む
光線を、７５０ｗ／ｍ２の強度で、硝子板の帯状印刷に
対して、ほぼ垂直な方向から、ガラス板に対して３０度
の角度で、５０ｃｍの間隔から１時間照射した。その
後、このサンプルを５８０℃−１０分間の条件で熱処理
した。The sample obtained in the preceding paragraph was subjected to screen-printing with an ultraviolet-shielding resin to form strips of 5 mm wide strips at 10 mm intervals. Using a Shimadzu accelerated exposure tester, this sample was exposed to a light beam containing ultraviolet rays of 800 mμ or less at an intensity of 750 w / m 2 from a direction substantially perpendicular to the band-shaped printing of the glass plate, and then to the glass plate. Irradiation was performed at an angle of 30 degrees from an interval of 50 cm for 1 hour. Then, this sample was heat-treated under the condition of 580 ° C. for 10 minutes.
【００１１】以上の様にして作製された硝子板には、硝
子板の厚み方向に、紫外線遮蔽樹脂をスクリーン印刷法
にて印刷された５ｍｍの幅で、３０度の角度を持った縞
模様を有する硝子板が得られた。この板硝子を小窓に使
用したが、直射光は入らず、紫外線照射した方向からの
光は入るので、ブラインドの必要のない小窓になった。On the glass plate manufactured as described above, a striped pattern having an angle of 30 degrees with a width of 5 mm, which was printed with an ultraviolet shielding resin by a screen printing method, in the thickness direction of the glass plate. A glass plate having was obtained. This plate glass was used for a small window, but since it did not receive direct light but light from the direction of UV irradiation, it became a small window that did not require blinds.
【００１２】[0012]
【実施例２】Example 2
【実施例１】と同様にして作製した硝子コップに紫外線
遮断樹脂をスクリーン印刷法で動物の絵柄を印刷し、そ
の後、実施例１と同様に、紫外線照射、熱処理を実施し
た。得られたサンプルは、紫外線が照射された方向が、
光の高い透過性を示し、それ以外の部分は、光の透過性
が悪い為、通常の観察では、動物の絵柄が認められない
が、紫外線を照射した方向から見ると、動物の絵柄が明
らかに認められるものである。従って、紫外線照射され
る部分を任意に設定することによって、製品に対する隠
し装飾模様を任意に付加できるものである。A glass cup produced in the same manner as in Example 1 was printed with an ultraviolet ray blocking resin using a screen printing method to draw an animal pattern, and thereafter, as in Example 1, ultraviolet irradiation and heat treatment were performed. The obtained sample has a UV irradiation direction,
It shows high light transmission, and the other parts have poor light transmission.Therefore, under normal observation, the animal pattern cannot be seen, but when viewed from the direction of UV irradiation, the animal pattern is clearly visible. Is recognized in. Therefore, a hidden decorative pattern for a product can be arbitrarily added by arbitrarily setting the portion irradiated with ultraviolet rays.
【００１３】[0013]
【発明の効果】以上説明した如く、本発明に係わるガラ
ス製品は、従来にない簡便な方法で得られる、選択的な
方向からの光を良く透過するが、その他の光を透過しな
い製品である。従って、本願発明は、ガラス製品に隠し
模様を付けること、或いは板硝子の場合には、ブライン
ドーなしで、ブラインドーの働きをする硝子板を製造出
来る等、極めて有益な発明である。As described above, the glass product according to the present invention is a product which is obtained by a simple method which has never been used and which transmits light from a selective direction well but does not transmit other light. .. Therefore, the present invention is a very useful invention, such as providing a hidden pattern on a glass product, or in the case of a plate glass, a glass plate functioning as a blind can be manufactured without a blind.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年１２月４日[Submission date] December 4, 1991
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Name of item to be amended] Title of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【発明の名称】 硝子製品の製造方法[Title of Invention] Method for manufacturing glass product
Claims (1)
量％、錫をＳｎＯ表示で０〜０．５重量％を必須成分と
して含有する硝子に於いて、硝子製品の選択的部分を紫
外線遮蔽材でマスキングし、紫外線を任意の角度から照
射後、熱処理して、紫外線を照射されなかった部分の発
色を抑制し、該部分に光の異なる透過性を付与した硝子
製品の製造方法。1. A glass which contains 0.005 to 0.5% by weight of Ag in terms of Ag 2 O and 0 to 0.5% by weight of tin in terms of SnO as an essential component, and is selective for glass products. Manufacturing a glass product in which a portion is masked with an ultraviolet shielding material, irradiated with ultraviolet rays from an arbitrary angle, and then heat-treated to suppress the color development of the portion not irradiated with ultraviolet rays, and to impart different light transmittance to the portion. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30727691A JPH0570169A (en) | 1991-09-09 | 1991-09-09 | Production of glass product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30727691A JPH0570169A (en) | 1991-09-09 | 1991-09-09 | Production of glass product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0570169A true JPH0570169A (en) | 1993-03-23 |
Family
ID=17967181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30727691A Pending JPH0570169A (en) | 1991-09-09 | 1991-09-09 | Production of glass product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0570169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07144922A (en) * | 1993-08-19 | 1995-06-06 | Ppg Ind Inc | Decreasing nickel sulfide stone in operation for melting glass |
-
1991
- 1991-09-09 JP JP30727691A patent/JPH0570169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07144922A (en) * | 1993-08-19 | 1995-06-06 | Ppg Ind Inc | Decreasing nickel sulfide stone in operation for melting glass |
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