TWI386379B - Manufacture of floating glass and manufacturing method thereof - Google Patents
Manufacture of floating glass and manufacturing method thereof Download PDFInfo
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- TWI386379B TWI386379B TW098124923A TW98124923A TWI386379B TW I386379 B TWI386379 B TW I386379B TW 098124923 A TW098124923 A TW 098124923A TW 98124923 A TW98124923 A TW 98124923A TW I386379 B TWI386379 B TW I386379B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
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Description
本發明係關於一種浮式玻璃之製造裝置及製造方法。The present invention relates to a manufacturing apparatus and a manufacturing method of a floating glass.
浮式玻璃之製造係如下過程：將熔融玻璃連續供給至浮式玻璃錫槽中所裝滿之熔融錫的表面上，利用複數個加熱器加熱熔融玻璃，並且使熔融玻璃沿著熔融金屬之表面向特定方向流動，成形所需寬度、厚度之帶板狀玻璃帶，而獲得平板玻璃。若採用浮式成形，則生產性較高，另外平坦度優異，因此例如可廣泛地應用於建築用平板玻璃或顯示面板基板用玻璃之製造等，先前已提出有為了實現品質提昇之提案(例如參照專利文獻1)。The manufacture of the floating glass is a process of continuously supplying molten glass to the surface of the molten tin filled in the floating glass tin bath, heating the molten glass with a plurality of heaters, and causing the molten glass to follow the surface of the molten metal Flowing in a specific direction, forming a strip-shaped glass ribbon of a desired width and thickness, and obtaining a flat glass. When the floating molding is used, the productivity is high and the flatness is excellent. For example, it can be widely applied to the production of flat glass for construction or glass for display panel substrates, and proposals for improving quality have been proposed (for example, Refer to Patent Document 1).
專利文獻1中所揭示之浮式玻璃之製造方法，係向調節自熔融爐所供給之熔融玻璃之流量的2個限流閘板、與熔融玻璃所形成之空間(限流閘板空間)中吹入氮氣，並將該限流閘板空間之壓力保持在高於自限流閘板至浮式玻璃錫槽為止之區間即流槽之壓力。藉由該壓力差，而防止自浮式玻璃錫槽所流入至流槽中之錫蒸氣流入至限流閘板空間，且防止錫蒸氣與氧氣反應所生成之錫石(SnO2 )結晶附著於作為可動部之限流閘板上。再者，若錫石結晶落入熔融玻璃中，則會成為玻璃之缺陷。The method for producing a floating glass disclosed in Patent Document 1 is for adjusting two flow restricting plates of a flow rate of molten glass supplied from a melting furnace and a space (flow restrictor shutter space) formed by the molten glass. Nitrogen gas is blown in, and the pressure of the restrictor shutter space is maintained at a pressure higher than the range from the limit flow gate to the floating glass tin bath. By the pressure difference, the tin vapor flowing into the flow cell from the floating glass tin bath is prevented from flowing into the restrictor shutter space, and the sillimanite (SnO 2 ) crystal formed by the reaction of the tin vapor and the oxygen is prevented from adhering to the crystal. As the limit plate on the movable part. Furthermore, if the cassiterite crystal falls into the molten glass, it becomes a defect of the glass.
先行技術文獻Advanced technical literature
專利文獻Patent literature
專利文獻1：日本專利特開平7-109130號公報Patent Document 1: Japanese Patent Laid-Open No. Hei 7-109930
近年來，隨著顯示器之大型化，業界要求進一步提昇、穩定顯示品質，而對於其所使用之玻璃基板，要求進一步抑制缺陷等品質之提昇。因此，作為顯示器用玻璃，業界要求進一步抑制錫石結晶。In recent years, with the increase in the size of displays, the industry has demanded further improvement and stable display quality, and it is required to further suppress the improvement of quality such as defects for the glass substrates used therein. Therefore, as a glass for display, the industry has demanded further suppression of cassiterite crystals.
浮式玻璃錫槽與流槽係由前壁即前橫樑而隔開，但為了於開始生產等之時熔融玻璃向浮式玻璃錫槽中之流入量發生較大變化時，使熔融玻璃不會與前橫樑相接觸，而將前橫樑與熔融玻璃之間隔設置得較寬。又，流槽環境氣體溫度低於浮式玻璃錫槽環境氣體溫度，浮式玻璃錫槽環境氣體容易流入至流槽中。若浮式玻璃錫槽環境氣體中所含之錫蒸氣流入至流槽中，則會與自構成流槽之耐火磚等構造物之縫隙中流入之微量氧氣發生反應，而生成錫石結晶。The floating glass tin bath and the launder are separated by the front wall, that is, the front cross member. However, in order to greatly change the inflow amount of the molten glass into the floating glass tin bath at the start of production or the like, the molten glass is not made. It is in contact with the front beam, and the distance between the front beam and the molten glass is set wider. Moreover, the ambient gas temperature of the launder is lower than the ambient gas temperature of the floating glass tin bath, and the floating glass tin bath environment gas easily flows into the launder. When the tin vapor contained in the floating glass tin bath atmosphere gas flows into the launder, it reacts with a trace amount of oxygen flowing in from the gap between the structures such as the refractory bricks constituting the launder, and generates cassiterite crystals.
又，若浮式玻璃錫槽環境氣體中所含之氫氣流入至流槽中，則會使熔融玻璃之表面發生還原。藉此，例如會導致：變得容易發生PDP(plasma display panel，電漿顯示面板)基板用玻璃之黃變(於電極生成步驟中之銀漿煅燒後玻璃呈現黃色)等顯示器面板基板用玻璃之品質降低。Further, when the hydrogen contained in the floating glass tin bath atmosphere gas flows into the flow cell, the surface of the molten glass is reduced. In this case, for example, it becomes easy to cause yellowing of the glass for the PDP (plasma display panel) substrate (the glass is yellow after the silver paste is fired in the electrode formation step), and the like. The quality is reduced.
本發明係鑒於上述課題研究而成者，其目的在於提供一種可獲得高品質之玻璃的浮式玻璃之製造裝置及製造方法。The present invention has been made in view of the above problems, and an object thereof is to provide a manufacturing apparatus and a manufacturing method of a floating glass which can obtain high quality glass.
上述目的係由本發明之下述(1)之浮式玻璃之製造裝置及下述(2)之浮式玻璃之製造方法而實現。The above object is achieved by the apparatus for producing a floating glass according to the above (1) of the present invention and the method for producing a floating glass according to the following (2).
(1)一種浮式玻璃之製造裝置，其特徵在於：其係使自熔融爐經由流槽而供給至浮式玻璃錫槽中之熔融玻璃沿著該浮式玻璃錫槽中所裝滿之熔融錫之表面流動，以成形為帶板狀之玻璃帶者，於穩定狀態時，將上述流槽與上述浮式玻璃錫槽隔開的前橫樑與熔融玻璃表面之間的前橫樑間隙為10 mm~40 mm，上述浮式玻璃錫槽環境氣體中之錫蒸氣濃度為3~10 mg/m3 ，氫氣濃度為4~10體積%，上述浮式玻璃錫槽環境氣體中之氮氣之供給量相對於每1 m3 之上述浮式玻璃錫槽環境氣體而為5~20 Nm3 /hr，上述流槽環境氣體中之錫蒸氣濃度為0.3~1 mg/m3 ，氫氣濃度為0~0.4體積%，上述流槽環境氣體中之氮氣之供給量相對於每1 m3 之上述流槽環境氣體而為超過20~1000 Nm3 /hr。(1) A device for manufacturing a floating glass, characterized in that the molten glass supplied from a melting furnace to a floating glass tin bath through a launder is melted along the floating glass tin bath. The surface of the tin flows to form a glass ribbon with a plate shape. In a steady state, the gap between the front beam and the surface of the molten glass separating the flow channel from the floating glass tin groove is 10 mm. ~40 mm, the tin vapor concentration in the above-mentioned floating glass tin bath environment is 3~10 mg/m 3 , and the hydrogen concentration is 4-10 volume%, and the supply amount of nitrogen in the floating glass tin bath environment gas is relatively 5 to 20 Nm 3 /hr per 1 m 3 of the above-mentioned floating glass tin bath atmosphere gas, the tin vapor concentration in the above-mentioned flow tank ambient gas is 0.3-1 mg/m 3 , and the hydrogen concentration is 0 to 0.4 volume. %, the supply amount of nitrogen in the flow cell ambient gas is more than 20 to 1000 Nm 3 /hr per 1 m 3 of the flow cell ambient gas.
(2)一種浮式玻璃之製造方法，其特徵在於：其係使自熔融爐經由流槽而供給至浮式玻璃錫槽中之熔融玻璃沿著該浮式玻璃錫槽中所裝滿之熔融錫之表面流動，而成形為帶板狀玻璃帶者，於啟動時，使將上述流槽與上述浮式玻璃錫槽隔開的前橫樑與熔融玻璃表面之間的前橫樑間隙為超過40 mm且為100 mm以下，於穩定狀態時，將上述前橫樑間隙設為10 mm~40 mm，於穩定狀態時，將上述浮式玻璃錫槽環境氣體中之錫蒸氣濃度設為3~10 mg/m3 ，將氫氣濃度設為4~10體積%，將上述浮式玻璃錫槽環境氣體中之氮氣之供給量相對於每1 m3 之上述浮式玻璃錫槽環境氣體設為5~20 Nm3 /hr，且將上述流槽環境氣體中之錫蒸氣濃度設為0.3~1 mg/m3 ，將氫氣濃度設為0~0.4體積%，將上述流槽環境氣體中之氮氣之供給量相對於每1 m3 之上述流槽環境氣體設為超過20 Nm3 /hr且為1000 Nm3 /hr以下。(2) A method for producing a floating glass, characterized in that the molten glass supplied from a melting furnace to a floating glass tin bath through a launder is melted along the floating glass tin bath The surface of the tin flows and is formed into a strip-shaped glass ribbon. At the time of starting, the gap between the front cross member and the surface of the molten glass separating the trough from the floating glass tin bath is more than 40 mm. When the temperature is 100 mm or less, the front beam gap is set to 10 mm to 40 mm in a steady state, and the tin vapor concentration in the floating glass tin bath atmosphere is set to 3 to 10 mg/at at a steady state. m 3 , the hydrogen concentration is set to 4 to 10% by volume, and the supply amount of nitrogen in the floating glass tin bath environment gas is set to 5 to 20 Nm per 1 m 3 of the floating glass tin bath environment gas. 3 /hr, and the tin vapor concentration in the above-mentioned laundering ambient gas is set to 0.3 to 1 mg/m 3 , the hydrogen concentration is set to 0 to 0.4% by volume, and the supply amount of nitrogen in the above-mentioned laundering ambient gas is relatively The above-mentioned flow tank ambient gas per 1 m 3 is set to exceed 20 Nm 3 /hr and is 1000 Nm 3 /hr or less.
根據本發明，可適當保持將浮式玻璃錫槽環境氣體及流槽環境氣體各自之錫蒸氣濃度、氫氣濃度，而抑制流槽中生成錫石結晶，並且抑制熔融玻璃發生還原。藉此可獲得高品質之玻璃。According to the present invention, it is possible to appropriately maintain the tin vapor concentration and the hydrogen concentration of each of the floating glass tin bath atmosphere gas and the flow channel ambient gas, thereby suppressing the formation of cassiterite crystals in the flow cell and suppressing the reduction of the molten glass. Thereby high quality glass can be obtained.
以下，參照圖式，對本發明之平板玻璃之製造方法之一實施形態進行詳細地說明。Hereinafter, an embodiment of the method for producing a flat glass of the present invention will be described in detail with reference to the drawings.
圖1係表示本發明之浮式玻璃之製造裝置之一實施形態的剖面圖，圖2係圖1之浮式玻璃之製造裝置之主要部分的立體圖。Fig. 1 is a cross-sectional view showing an embodiment of a manufacturing apparatus for a floating glass of the present invention, and Fig. 2 is a perspective view showing a main part of the apparatus for manufacturing a floating glass of Fig. 1.
如圖1所示，本實施形態之浮式玻璃之製造裝置1，係使自未圖示之熔融爐於流道唇板(lip)2上流動而供給至浮式玻璃錫槽3中的熔融玻璃4，沿著浮式玻璃錫槽3中所裝滿之熔融錫5之表面流動，而成形為帶板狀之玻璃帶。玻璃帶係自浮式玻璃錫槽3之出口取出，其後利用未圖示之緩冷爐(lehr)進行緩冷，再於洗淨後切斷為特定之尺寸。As shown in Fig. 1, the apparatus for manufacturing a floating glass according to the present embodiment is a molten metal which is supplied from a molten furnace (not shown) to a flow path lip 2 and supplied to the floating glass tin bath 3. The glass 4 flows along the surface of the molten tin 5 filled in the floating glass tin bath 3, and is formed into a strip-shaped glass ribbon. The glass ribbon is taken out from the outlet of the floating glass tin bath 3, and then slowly cooled by a slow cooling furnace (lehr) (not shown), and then cut to a specific size after washing.
於熔融爐與浮式玻璃錫槽3之間，設置有控制於流道唇板2上流動之熔融玻璃4之流量的限流閘板6。經過限流閘板6而使流量獲得控制之熔融玻璃4，係於浮式玻璃錫槽3的前壁、即前橫樑12之近前，自流道唇板2之前端供給至浮式玻璃錫槽3中。Between the melting furnace and the floating glass tin bath 3, a flow restricting shutter 6 for controlling the flow rate of the molten glass 4 flowing on the flow path lip 2 is provided. The molten glass 4 whose flow rate is controlled by the flow restricting shutter 6 is attached to the front wall of the floating glass tin bath 3, that is, immediately before the front cross member 12, and is supplied to the floating glass tin bath 3 from the front end of the flow path lip 2 in.
為了防止於熔融錫5之表面上流動之熔融玻璃4變質，而向浮式玻璃錫槽3內供給以氮氣等惰性氣體為主要成分之氣體，而抑制外部氣體(氧氣)流入至浮式玻璃錫槽3內。為了防止熔融錫5之蒸氣發生氧化而生成錫石結晶，該氣體中含有還原性之氫氣。又，浮式玻璃錫槽3之環境氣體中之氮氣之供給量相對於每1 m3 的浮式玻璃錫槽3之環境氣體為5~20 Nm3 /hr。供給至浮式玻璃錫槽3內之上述氣體係通過設置於浮式玻璃錫槽3之頂蓋構造11上之未圖示之管道而排出至外部。此時，熔融錫5之蒸氣亦同時被排出。於本實施形態中，藉由向浮式玻璃錫槽3內供給上述氣體，而使浮式玻璃錫槽3內之環境氣體保持為：錫蒸氣濃度為3~10 mg/m3 ，氫氣濃度為4~10體積%。In order to prevent deterioration of the molten glass 4 flowing on the surface of the molten tin 5, a gas containing an inert gas such as nitrogen as a main component is supplied into the floating glass tin bath 3, thereby suppressing the inflow of external gas (oxygen) into the floating glass tin. Inside the slot 3. In order to prevent oxidation of the vapor of the molten tin 5, a cassiterite crystal is formed, which contains reducing hydrogen. Further, the supply amount of nitrogen in the ambient gas of the floating glass tin bath 3 is 5 to 20 Nm 3 /hr with respect to the ambient gas per 1 m 3 of the floating glass tin bath 3. The gas system supplied into the floating glass tin bath 3 is discharged to the outside through a pipe (not shown) provided in the roof structure 11 of the floating glass tin bath 3. At this time, the vapor of the molten tin 5 is also discharged at the same time. In the present embodiment, by supplying the gas into the floating glass tin bath 3, the ambient gas in the floating glass tin bath 3 is maintained at a tin vapor concentration of 3 to 10 mg/m 3 and a hydrogen gas concentration of 4 to 10% by volume.
限流閘板6與前橫樑12之間係劃分為流槽7。The flow restrictor 6 and the front cross member 12 are divided into a flow channel 7.
進而參照圖2，將浮式玻璃錫槽3與流槽7隔開的前橫樑12，具有固定於頂蓋構造11上的前橫樑本體21、與安裝於前橫樑本體21上的前橫樑間隙調整板22。前橫樑間隙調整板22係由設置於前橫樑本體21上之導框23所支撐，而可以接近或遠離在浮式玻璃錫槽3之熔融錫5之表面上流動之熔融玻璃4的方式進行升降。再者，於圖2中，關於前橫樑12以外之劃分流槽7之耐火構造物，省略了圖示。2, the front cross member 12 that separates the floating glass tin bath 3 from the launder 7 has a front cross member body 21 fixed to the top cover structure 11 and an adjustment of the front cross member attached to the front cross member 21 Board 22. The front beam gap adjusting plate 22 is supported by the guide frame 23 provided on the front beam body 21, and can be lifted up or away from the molten glass 4 flowing on the surface of the molten tin 5 of the floating glass tin bath 3. . In addition, in FIG. 2, the refractory structure which divides the flow cell 7 other than the front cross beam 12 is abbreviate|omitted.
於本實施形態之浮式玻璃之製造裝置1中，於生產開始時等啟動時、即於熔融玻璃4向浮式玻璃錫槽3中之流入量(噸/小時)之變化率超過±5%時，前橫樑間隙調整板22之下邊緣與熔融玻璃4之間的前橫樑間隙24係設定為超過40 mm~100 mm。藉此，即使流入量發生變化，亦可避免熔融玻璃4與前橫樑間隙調整板22接觸，而使熔融玻璃4平穩地流入至浮式玻璃錫槽3中。變化率可根據自浮式玻璃錫槽3中抽出之玻璃帶的抽出量(噸/小時)進行把握。In the manufacturing apparatus 1 of the floating glass of the present embodiment, the rate of change in the inflow amount (ton/hour) of the molten glass 4 into the floating glass tin bath 3 at the start of production or the like is more than ±5%. At the time, the front cross member gap 24 between the lower edge of the front cross member gap adjusting plate 22 and the molten glass 4 is set to be more than 40 mm to 100 mm. Thereby, even if the inflow amount changes, the molten glass 4 can be prevented from coming into contact with the front beam gap adjusting plate 22, and the molten glass 4 can smoothly flow into the floating glass tin bath 3. The rate of change can be grasped based on the amount of extraction (ton/hour) of the glass ribbon extracted from the floating glass tin bath 3.
並且，於穩定狀態時、即熔融玻璃4向浮式玻璃錫槽3中之流入量(噸/小時)之變化率在±5%以內時，降下前橫樑間隙調整板22，而使前橫樑間隙調整板22之下邊緣與熔融玻璃4之間的前橫樑間隙24變窄。藉此，可抑制浮式玻璃錫槽3之環境氣體通過該前橫樑間隙24而向流槽7流入。此時的前橫樑間隙24較好的是10 mm~40 mm，更好的是10 mm~30 mm。又，向流槽7內供給以氮氣等惰性氣體為主要成分之氣體，而抑制外部氣體(氧氣)向流槽7內流入。流槽7之環境氣體中之氮氣之供給量相對於每1 m3 之流槽7之環境氣體為超過20~1000 Nm3 /hr，較好的是50~500 Nm3 /hr。藉此，流槽7內之環境氣體保持為：錫蒸氣濃度為0.3~1 mg/m3 ，氫氣濃度為0~0.4體積%。藉由使流槽7之環境氣體保持為上述濃度，可抑制流槽7中生成錫石結晶，並且抑制熔融玻璃4發生還原。Further, in the steady state, that is, when the rate of change of the inflow amount (ton/hour) of the molten glass 4 into the floating glass tin bath 3 is within ±5%, the front beam gap adjusting plate 22 is lowered, and the front beam gap is made. The front cross member gap 24 between the lower edge of the adjustment plate 22 and the molten glass 4 is narrowed. Thereby, the ambient gas of the floating glass tin bath 3 can be prevented from flowing into the flow cell 7 through the front beam gap 24. The front beam gap 24 at this time is preferably 10 mm to 40 mm, more preferably 10 mm to 30 mm. In addition, a gas containing an inert gas such as nitrogen as a main component is supplied into the launder 7, and the inflow of the outside air (oxygen) into the launder 7 is suppressed. The supply amount of nitrogen in the ambient gas of the flow cell 7 is more than 20 to 1000 Nm 3 /hr, preferably 50 to 500 Nm 3 /hr, with respect to the ambient gas per 1 m 3 of the flow cell 7. Thereby, the ambient gas in the launder 7 is maintained at a tin vapor concentration of 0.3 to 1 mg/m 3 and a hydrogen concentration of 0 to 0.4 vol%. By keeping the ambient gas of the launder 7 at the above concentration, generation of cassiterite crystals in the launder 7 can be suppressed, and reduction of the molten glass 4 can be suppressed.
考慮到耐火性、耐熱性、耐氧化性等，前橫樑間隙調整板22例如可由磚、碳、塗佈有碳化矽(SiC)之碳而形成，尤其好的是塗佈有耐氧化性優異之碳化矽之碳。The front cross-beam gap adjusting plate 22 can be formed, for example, of brick, carbon, or carbon coated with cerium carbide (SiC) in consideration of fire resistance, heat resistance, oxidation resistance, etc., and particularly preferably coated with excellent oxidation resistance. Carbon of tantalum carbide.
如以上所說明，根據本實施形態之浮式玻璃之製造裝置1，可適當保持浮式玻璃錫槽環境氣體及流槽環境氣體各自之錫蒸氣濃度、氫氣濃度，抑制流槽7中生成錫石結晶，並且抑制熔融玻璃4發生還原。藉此可獲得高品質之玻璃。As described above, according to the manufacturing apparatus 1 for a floating glass of the present embodiment, the tin vapor concentration and the hydrogen gas concentration of each of the floating glass tin bath atmosphere gas and the flow channel ambient gas can be appropriately maintained, and the formation of the cassiterite in the flow cell 7 can be suppressed. Crystallization and suppression of reduction of the molten glass 4. Thereby high quality glass can be obtained.
再者，本發明並不限定於上述實施形態，可自由地進行適當之變形、改良等。此外，上述實施形態中之各構成要素之材質、形狀、尺寸、數值、形態、數量、配置位置等若可實現本發明則為任意，並無限定。Furthermore, the present invention is not limited to the above embodiment, and appropriate modifications, improvements, and the like can be freely performed. In addition, the material, the shape, the size, the numerical value, the form, the number, the arrangement position, and the like of the respective constituent elements in the above-described embodiments are not limited as long as the present invention can be realized.
其次，為了確認本發明之效果，使用圖1之製造裝置，於穩定狀態且於表1之條件下，進行PDP基板用玻璃之浮式成形，並以肉眼評價玻璃板表面上之每單位面積所附著之錫石結晶。再者，於進入穩定狀態前之啟動時，係升降塗佈有碳化矽之碳製的前橫樑間隙調整板，而以前橫樑間隙達到90 mm之方式進行設定，因此可使啟動時之熔融玻璃平穩地流入至浮式玻璃錫槽中。Next, in order to confirm the effect of the present invention, the production apparatus of Fig. 1 was used, and in the steady state and under the conditions of Table 1, the glass for PDP substrate was float-formed, and the area per unit area on the surface of the glass plate was visually evaluated. Attached cassiterite crystals. Furthermore, at the start of the steady state, the front beam gap adjusting plate coated with carbonized tantalum carbon is lifted and lowered, and the previous beam gap is set to 90 mm, so that the molten glass at the start can be made smooth. The ground flows into the floating glass tin bath.
實施例之玻璃板與比較例之玻璃板相比，由錫石結晶之附著所引起之缺陷減少至1/5以下。又，如表1所示，流槽中之氫氣濃度降低，由此得知可獲得抑制PDP基板用玻璃發生黃變等作為顯示器面板基板用玻璃之高品質的玻璃。又，使用圖1之製造裝置可長時間進行玻璃之浮式成形，可穩定獲得高品質之玻璃。In the glass plate of the example, the defects caused by the adhesion of the cassiterite crystals were reduced to 1/5 or less as compared with the glass plate of the comparative example. In addition, as shown in Table 1, the hydrogen concentration in the flow cell is lowered, and it is known that high-quality glass which is a glass for a display panel substrate, such as yellowing of the PDP substrate glass, can be obtained. Further, by using the manufacturing apparatus of Fig. 1, the glass can be float-formed for a long period of time, and high-quality glass can be stably obtained.
以上，參照特定實施形態對本發明進行了詳細地說明，但熟悉此技藝者當然明瞭於不脫離本發明之精神與範圍之前提下可實施各種變更或修正。本申請案係基於2008年7月28日提出申請之日本專利申請案2008-193716者，其內容作為參照而併入本文中。The present invention has been described in detail above with reference to the specific embodiments thereof. It will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the invention. The present application is based on Japanese Patent Application No. 2008-193716, filed on Jan. 28, 2008, the content of
1．．．浮式玻璃之製造裝置1. . . Floating glass manufacturing device
3．．．浮式玻璃錫槽3. . . Floating glass tin bath
4．．．熔融玻璃4. . . Molten glass
5．．．熔融錫5. . . Molten tin
6．．．限流閘板6. . . Current limiting gate
7．．．流槽7. . . Flow cell
12．．．前橫樑12. . . Front beam
21．．．前橫樑本體twenty one. . . Front beam body
22．．．前橫樑間隙調整板twenty two. . . Front beam clearance adjustment plate
24．．．前橫樑間隙twenty four. . . Front beam clearance
圖1係表示本發明之浮式玻璃之製造裝置之一實施形態的剖面圖；及圖2係圖1之浮式玻璃之製造裝置之主要部分的立體圖。Fig. 1 is a cross-sectional view showing an embodiment of a manufacturing apparatus for a floating glass of the present invention; and Fig. 2 is a perspective view showing a main part of the apparatus for manufacturing a floating glass of Fig. 1.
1．．．浮式玻璃之製造裝置1. . . Floating glass manufacturing device
2．．．流道唇板2. . . Runner lip
3．．．浮式玻璃錫槽3. . . Floating glass tin bath
4．．．熔融玻璃4. . . Molten glass
5．．．熔融錫5. . . Molten tin
6．．．限流閘板6. . . Current limiting gate
7．．．流槽7. . . Flow cell
11．．．頂蓋構造11. . . Roof structure
12．．．前橫樑12. . . Front beam
24．．．前橫樑間隙twenty four. . . Front beam clearance
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008193716 | 2008-07-28 |
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| TW201004878A TW201004878A (en) | 2010-02-01 |
| TWI386379B true TWI386379B (en) | 2013-02-21 |
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| TW098124923A TWI386379B (en) | 2008-07-28 | 2009-07-23 | Manufacture of floating glass and manufacturing method thereof |
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| JP (1) | JP5459213B2 (en) |
| KR (1) | KR101529753B1 (en) |
| CN (1) | CN102112404B (en) |
| TW (1) | TWI386379B (en) |
| WO (1) | WO2010013575A1 (en) |
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| DE102009000348B4 (en) * | 2008-08-28 | 2011-09-01 | Schott Ag | Process for the production of flat glass |
| JP2016026978A (en) * | 2012-11-22 | 2016-02-18 | 旭硝子株式会社 | Moulding equipment of float glass, and float glass manufacturing method |
| JP2016084241A (en) * | 2013-02-18 | 2016-05-19 | 旭硝子株式会社 | Method and apparatus for manufacturing glass plate |
| JP2016193797A (en) * | 2013-09-13 | 2016-11-17 | 旭硝子株式会社 | Float glass manufacturing apparatus, and float glass manufacturing method using the apparatus |
| JP6206179B2 (en) * | 2013-12-27 | 2017-10-04 | 日本電気硝子株式会社 | Molten glass supply apparatus and glass plate manufacturing apparatus |
| CN104176913B (en) * | 2014-08-12 | 2017-02-22 | 中国南玻集团股份有限公司 | Groove kiln for float glass and manufacturing device of float glass |
| KR102639796B1 (en) * | 2019-05-27 | 2024-02-22 | 주식회사 엘지화학 | Apparatus for manufacturing glass plate |
| KR102639801B1 (en) * | 2019-05-27 | 2024-02-22 | 주식회사 엘지화학 | Apparatus for manufacturing glass plate |
| KR102639794B1 (en) * | 2019-05-27 | 2024-02-22 | 주식회사 엘지화학 | Apparatus for manufacturing glass plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934994A (en) * | 1974-05-30 | 1976-01-27 | Ppg Industries, Inc. | Control of thermal convection in a float glass forming chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BE638560A (en) * | 1962-10-11 | |||
| SG102710A1 (en) * | 2002-03-06 | 2004-03-26 | Zeiss Stiftung | Device for cleaning the surface of lift-out rollers of a float plant for producing a floated glass ribbon |
| JP5293915B2 (en) * | 2006-12-11 | 2013-09-18 | 日本電気硝子株式会社 | Glass plate manufacturing method and apparatus |
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2009
- 2009-06-30 CN CN2009801298477A patent/CN102112404B/en active Active
- 2009-06-30 KR KR1020117002241A patent/KR101529753B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934994A (en) * | 1974-05-30 | 1976-01-27 | Ppg Industries, Inc. | Control of thermal convection in a float glass forming chamber |
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| KR20110049785A (en) | 2011-05-12 |
| CN102112404B (en) | 2013-08-21 |
| JP5459213B2 (en) | 2014-04-02 |
| CN102112404A (en) | 2011-06-29 |
| KR101529753B1 (en) | 2015-06-17 |
| JPWO2010013575A1 (en) | 2012-01-12 |
| WO2010013575A1 (en) | 2010-02-04 |
| TW201004878A (en) | 2010-02-01 |
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