JP2001031434A - Forming of plate glass and forming apparatus - Google Patents
Forming of plate glass and forming apparatusInfo
- Publication number
- JP2001031434A JP2001031434A JP11204759A JP20475999A JP2001031434A JP 2001031434 A JP2001031434 A JP 2001031434A JP 11204759 A JP11204759 A JP 11204759A JP 20475999 A JP20475999 A JP 20475999A JP 2001031434 A JP2001031434 A JP 2001031434A
- Authority
- JP
- Japan
- Prior art keywords
- molten glass
- glass
- forming
- side wall
- formed body
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は溶融ガラスから板ガ
ラスを成形する成形方法および成形装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming method and a forming apparatus for forming sheet glass from molten glass.
【０００２】[0002]
【従来の技術】一般に、薄い板ガラスを製造する場合、
断面が略くさび形の成形体の上部に形成されたオーバー
フロー溝に溶融ガラスを供給し、溶融ガラスをオーバー
フロー溝の両側から溢れさせて成形体の両側の側壁面を
流下させた後、各々の溶融ガラスを成形体の下頂部で融
合させ１枚の板ガラスに成形する板ガラスの成形方法が
知られている。2. Description of the Related Art Generally, when manufacturing thin sheet glass,
The molten glass is supplied to the overflow groove formed on the upper part of the molded body having a substantially wedge-shaped cross section, and the molten glass overflows from both sides of the overflow groove to flow down the side wall surfaces on both sides of the molded body. 2. Description of the Related Art A sheet glass forming method is known in which glass is fused at a lower top portion of a formed body to form one sheet glass.
【０００３】上記の成形方法に用いられる成形装置は、
図２に示すように、保温壁１により形成される成形室１
ａ内に、断面が略くさび形であり上部にオーバーフロー
溝２ａを有する成形体２を配置し、成形体２のオーバー
フロー溝２ａに溶融ガラス４を供給し、溢れさせて成形
体２の両側の側壁面２ｂを流下させ、成形体２の下頂部
２ｃで融合させることにより板ガラス５を成形し、開口
部１ｂを通して引き出されるようになっており、成形体
２の両側に複数本の棒状発熱体３を平行に配置した構造
になっている。[0003] The molding apparatus used in the above molding method includes:
As shown in FIG. 2, the molding chamber 1 formed by the heat retaining wall 1
a, a molten glass 4 is supplied to the overflow groove 2 a of the molded body 2, and the molten glass 4 is overflowed to the both sides of the molded body 2. The glass sheet 5 is formed by flowing down the wall surface 2b and fusing at the lower apex 2c of the molded body 2, and is drawn out through the opening 1b. A plurality of rod-shaped heating elements 3 are provided on both sides of the molded body 2. The structure is arranged in parallel.
【０００４】上記のような成形装置では、成形体２の横
幅方向に対して両側の側壁面２ｂを流下する溶融ガラス
４の温度を調節することが困難であり、成形体２の両側
の側壁面２ｂを流下する溶融ガラス４は、種々の条件に
より成形される板ガラス５の横幅方向の厚さに差異が生
じ、成形体２の下頂部２ｃにおける成形体２の横幅方向
に肉厚分布を微調節することが困難であった。そのた
め、成形体２の直下の板ガラス５が成形される領域で板
ガラス５の横幅方向に局所的に加熱、或いは冷却するこ
とによってガラスの粘度を変化させ肉厚の微調節を行う
等の方法が採用されてきた。In the molding apparatus as described above, it is difficult to control the temperature of the molten glass 4 flowing down the side walls 2b on both sides in the width direction of the molded body 2, and the side walls on both sides of the molded body 2 are difficult to control. The molten glass 4 flowing down 2b has a difference in thickness in the width direction of the sheet glass 5 formed under various conditions, and the thickness distribution in the width direction of the formed body 2 at the lower top 2c of the formed body 2 is finely adjusted. It was difficult to do. Therefore, a method of locally changing the viscosity of the glass by locally heating or cooling in the width direction of the plate glass 5 in a region where the plate glass 5 is formed immediately below the molded body 2 to finely adjust the thickness is adopted. It has been.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、溶融ガ
ラス４を融合させて１枚の板ガラス５に成形した後に局
所的に加熱または冷却を行った場合、成形された板ガラ
ス５に局所的な残留応力の差異による内部歪みが残留す
るので、後に熱処理により除歪みする工程が必要になる
という問題点がある。また、成形された板ガラス５が再
び局所的に引き延ばされることになるので、表面の平坦
度等の精度に悪影響を及ぼすという問題点もある。However, when the molten glass 4 is fused and formed into a single sheet of glass 5 and then locally heated or cooled, local residual stress in the formed sheet of glass 5 is reduced. Since the internal strain due to the difference remains, there is a problem that a step of removing the strain by heat treatment is required later. In addition, since the formed glass sheet 5 is locally stretched again, there is a problem that accuracy such as surface flatness is adversely affected.
【０００６】本発明の目的は、上記の問題点を解決した
板ガラスの成形方法および成形装置を提供することであ
る。An object of the present invention is to provide a sheet glass forming method and a forming apparatus which solve the above problems.
【０００７】[0007]
【課題を解決するための手段】本発明に係る板ガラスの
成形方法は、断面が略くさび形であり上部にオーバーフ
ロー溝を有する成形体に溶融ガラスを供給し、該成形体
のオーバーフロー溝から両側に溶融ガラスを溢れさせて
両側の側壁面を流下させた後に各々の溶融ガラスを成形
体の下頂部で融合させて板ガラスを成形する板ガラスの
成形方法において、前記成形体の側壁面を流下する溶融
ガラスを、その横幅方向の所定区画毎に温度調節するこ
とを特徴とするものであり、さらに前記溶融ガラスの横
幅方向の少なくとも一部の区画の溶融ガラスを、その流
下方向の所定区画毎に温度調節することが好ましい。SUMMARY OF THE INVENTION According to the present invention, there is provided a method for forming a glass sheet, comprising: supplying molten glass to a molded article having a substantially wedge-shaped cross section and having an overflow groove at an upper portion; In a method of forming a glass sheet by overflowing the molten glass and flowing down the side wall surfaces on both sides and then fusing each molten glass at a lower top portion of the molded body to form a glass sheet, the molten glass flowing down the side wall surface of the molded body The temperature is adjusted for each predetermined section in the width direction of the molten glass, and the molten glass in at least a part of the section in the width direction of the molten glass is temperature-controlled for each predetermined section in the flowing direction. Is preferred.
【０００８】また、本発明の板ガラスの成形装置は、下
方に開口部を有し成形室を形成する保温壁と、前記成形
室内に設けられ板ガラスを成形する断面が略くさび形の
成形体とを備え、前記成形体は、上部に溶融ガラスのオ
ーバーフロー溝と、該オーバーフロー溝の両側に溢れる
溶融ガラスを流下させるための側壁面と、下部に側壁面
を流下した後の各々の溶融ガラスを融合させる下頂部と
を有し、前記成形体の側壁面を流下する溶融ガラスに対
して、横幅方向の所定区画毎に、複数の発熱体を近接配
置したことを特徴とするものであり、さらに前記溶融ガ
ラスの横幅方向の少なくとも一部の区画の溶融ガラスに
対して、その流下方向の所定区画毎に、複数の発熱体を
近接配置しておくことが好ましい。Further, the sheet glass forming apparatus of the present invention comprises a heat insulating wall having an opening below and forming a forming chamber, and a formed body provided in the forming chamber and having a substantially wedge-shaped cross section for forming the sheet glass. The molded body has an upper portion in which the molten glass overflows on the upper portion, a side wall surface for flowing down the molten glass overflowing on both sides of the overflow groove, and a lower portion of the molten glass after flowing down the side wall surface. A plurality of heating elements are disposed in close proximity to the molten glass flowing down the side wall surface of the molded body, for each predetermined section in the lateral width direction, further comprising: It is preferable to arrange a plurality of heating elements in close proximity to the molten glass in at least some of the sections in the width direction of the glass for each predetermined section in the flow-down direction.
【０００９】[0009]
【作用】本発明によれば、成形体の側壁面を流下する溶
融ガラスに対して、横幅方向の所定区画毎に、複数の発
熱体を近接配置してあるので、各々の発熱体を独立して
温度制御を行うことにより、流下する溶融ガラスの横幅
方向の温度を所定区画毎に調節することが可能となり、
各々の発熱体の温度調節を行って側壁面を流下する溶融
ガラスの粘度を横幅方向の所定区画毎に変化させ溶融ガ
ラスの流量を部分的に制御することにより、成形される
板ガラスの厚さを広い横幅方向に亘って均一にすること
ができる。また、溶融ガラスの横幅方向の少なくとも一
部の区画の溶融ガラスに対して、その流下方向の所定区
画毎に、複数の発熱体を近接配置してあるので、各々の
発熱体を独立して温度制御を行うことにより、溶融ガラ
スの流下方向の温度を所定区画毎に調節することが可能
となり、温度調節を行って板ガラスの成形に最適な高さ
方向の温度分布を形成することにより、安定して板ガラ
スを成形することができる。According to the present invention, since a plurality of heating elements are arranged in close proximity to the molten glass flowing down the side wall surface of the molded body in each predetermined section in the width direction, each heating element is independently provided. By performing the temperature control, it becomes possible to adjust the temperature in the width direction of the molten glass flowing down for each predetermined section,
By controlling the temperature of each heating element, changing the viscosity of the molten glass flowing down the side wall surface for each predetermined section in the width direction and partially controlling the flow rate of the molten glass, the thickness of the formed glass sheet is reduced. It can be uniform over a wide width direction. In addition, since a plurality of heating elements are arranged in close proximity to the molten glass in at least a part of the section in the width direction of the molten glass for each predetermined section in the flowing direction, each heating element is independently temperature-controlled. By performing the control, it is possible to adjust the temperature in the flowing direction of the molten glass for each predetermined section, and by performing the temperature adjustment to form an optimal temperature distribution in the height direction for forming the sheet glass, the temperature can be stabilized. To form sheet glass.
【００１０】[0010]
【発明の実施の形態】本発明の実施例の説明図を図１に
示す。図において１は保温壁を、１ａは保温壁１により
形成された成形室を、１ｂは開口部を、２は成形体を、
２ａはオーバーフロー溝を、２ｂは成形体の側壁面を、
２ｃは下頂部を、３は発熱体を、４は溶融ガラスを、５
は板ガラスを各々示しており、前出の図２と同一部分に
は同一符号を付してそれぞれ示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram of an embodiment of the present invention. In the figure, 1 is a heat retaining wall, 1a is a molding chamber formed by the heat retaining wall 1, 1b is an opening, 2 is a molded body,
2a is an overflow groove, 2b is a side wall surface of a molded body,
2c is the lower top, 3 is the heating element, 4 is the molten glass, 5
Denotes sheet glass, and the same parts as those in FIG. 2 are denoted by the same reference numerals.
【００１１】まず、本発明に係る板ガラスの成形装置の
一例を説明する。First, an example of a sheet glass forming apparatus according to the present invention will be described.
【００１２】本発明の板ガラスの成形装置は、図１に示
すように、保温壁１からなる成形室１ａの内部に、断面
が略くさび形であり上部に溶融ガラス４を流すオーバー
フロー溝２ａを有する成形体２を配置してあり、成形室
１ａの下方には成形体２により成形された板ガラス５を
通過させる開口部１ｂが設けてある。成形室１ａの保温
壁１と成形体２の側壁面２ｂとの間に、流下する溶融ガ
ラス４の横幅方向の所定区画、例えば、１５０ｍｍ毎
に、幅１００ｍｍ、長さ４００ｍｍ、厚さ１０ｍｍの板
状に加工された発熱体３を並列に近接配置してあり、各
々の発熱体３は個々に独立して出力制御が可能な電源装
置（図示省略）に接続してある。As shown in FIG. 1, the sheet glass forming apparatus of the present invention has an overflow groove 2a having a substantially wedge-shaped cross section and a molten glass 4 at an upper portion inside a forming chamber 1a formed of a heat insulating wall 1. The molded body 2 is disposed, and an opening 1b through which the sheet glass 5 molded by the molded body 2 passes is provided below the molding chamber 1a. A predetermined section in the width direction of the molten glass 4 flowing down between the heat retaining wall 1 of the molding chamber 1a and the side wall surface 2b of the molded body 2, for example, a plate having a width of 100 mm, a length of 400 mm, and a thickness of 10 mm every 150 mm The heating elements 3 processed in a shape are arranged in parallel and close to each other, and each of the heating elements 3 is connected to a power supply device (not shown) capable of individually controlling the output.
【００１３】成形室１ａとしては、断熱性が高く発塵の
ないセラミック製の耐火物からなる保温壁１で形成さ
れ、内部の温度が安定するように、上部を密閉構造にし
て内部で空気が対流することを防止してある。The molding chamber 1a is formed by a heat insulating wall 1 made of a ceramic refractory having high heat insulation and no dust generation. Convection is prevented.
【００１４】成形体２としては、表面が溶融ガラス４に
対して耐食性を有するセラミック製の耐火物からなり、
断面が略くさび形で上部にオーバーフロー溝２ａが形成
され、オーバーフロー溝２ａの一端は溶融ガラス４を供
給するためにガラス溶融窯（図示省略）に連通されてい
る。成形体２の両側は、オーバーフロー溝２ａから溢れ
出る溶融ガラス４が二分されて側壁面２ｂ、２ｂをほぼ
均一な厚さの溶融ガラス４として各々流下するようにな
っている。側壁面２ｂ、２ｂが交わる下頂部２ｃは、側
壁面２ｂを流下した各々の溶融ガラス４が泡等を介在さ
せることなく融合して１枚の板ガラス５になるように尖
った形状にされている。The molded body 2 is made of a ceramic refractory whose surface has corrosion resistance to the molten glass 4.
An overflow groove 2a is formed in the upper part with a substantially wedge-shaped cross section, and one end of the overflow groove 2a communicates with a glass melting furnace (not shown) to supply the molten glass 4. On both sides of the molded body 2, the molten glass 4 overflowing from the overflow groove 2a is divided into two, and the side walls 2b, 2b flow down as molten glass 4 having a substantially uniform thickness. The lower apex portion 2c where the side wall surfaces 2b and 2b intersect is formed in a sharp shape so that the respective molten glasses 4 flowing down the side wall surface 2b are fused into one sheet glass 5 without intervening bubbles or the like. .
【００１５】発熱体３としては、通電すると発熱するカ
ーボン、炭化珪素等からなり、各々の発熱体３には熱電
対（図示省略）が備えられ、表面温度を独立して自動制
御が可能なように電源装置（図示省略）に配線されてい
る。また、発塵が避けられない発熱体３を使用する場合
には、発塵のないセラミック製の耐火物で表面を覆うと
よい。このような複数の発熱体３を成形体２の側壁面２
ｂを流下する溶融ガラス４の横幅方向の１５０ｍｍ毎に
並列に配置することにより、側壁面２ｂを流下する溶融
ガラス４を横幅方向の１５０ｍｍ毎に加熱できるように
なっている。また、図１（Ｃ）に示すように、側壁面２
ｂを流下中の溶融ガラス４に対して、並列に近接配置し
た複数の発熱体３のうちの一部または全部を、流下方向
の所定区画毎、例えば１００ｍｍ毎に分割した各々出力
制御が可能な複数の発熱体３ａに代えることにより、所
定の幅寸法毎の溶融ガラス４の流下方向の温度分布を調
節することが可能となる。The heating elements 3 are made of carbon, silicon carbide, etc., which generate heat when energized. Each of the heating elements 3 is provided with a thermocouple (not shown) so that the surface temperature can be independently controlled automatically. Are connected to a power supply (not shown). When using the heating element 3 in which dust generation cannot be avoided, the surface may be covered with a ceramic refractory that does not generate dust. Such a plurality of heating elements 3 are formed on the side wall surface 2 of the molded body 2.
By arranging in parallel every 150 mm in the width direction of the molten glass 4 flowing down b, the molten glass 4 flowing down the side wall surface 2b can be heated every 150 mm in the width direction. Further, as shown in FIG.
Output control can be performed by dividing a part or all of the plurality of heating elements 3 arranged in parallel and adjacent to the molten glass 4 flowing down b at every predetermined section in the flowing direction, for example, every 100 mm. By substituting the plurality of heating elements 3a, it becomes possible to adjust the temperature distribution in the flowing direction of the molten glass 4 for each predetermined width dimension.
【００１６】次に、本発明に係る板ガラスの成形方法の
一例を説明する。Next, an example of the method for forming a sheet glass according to the present invention will be described.
【００１７】本発明の板ガラスの成形方法は、成形体２
のオーバーフロー溝２ａに溶融ガラス４を供給し、オー
バーフロー溝２ａから溶融ガラス４を溢れさせて成形体
２の両側の側壁面２ｂを流下させ、側壁面２ｂを流下す
る溶融ガラス４を、横幅方向に所定区画毎、例えば１５
０ｍｍ幅毎に各々の発熱体３を独立して自動制御するこ
とにより温度調節し、成形体２の下頂部２ｃで融合させ
て引き延ばしながら１枚の板ガラス５に成形する。The method for forming a sheet glass of the present invention comprises the steps of:
The molten glass 4 is supplied to the overflow groove 2a, the molten glass 4 overflows from the overflow groove 2a to flow down the side walls 2b on both sides of the molded body 2, and the molten glass 4 flowing down the side wall 2b is moved in the width direction. For each predetermined section, for example, 15
The temperature is adjusted by automatically controlling each of the heat generating elements 3 independently for each 0 mm width, and is formed into one sheet glass 5 while being fused and stretched at the lower top 2c of the formed body 2.
【００１８】また、発熱体３の代わりに、複数の発熱体
３ａを配置して流下方向の所定区画毎、例えば１００ｍ
ｍ毎に自動制御で温度を調節することにより、横幅方向
の所定区画の溶融ガラス４を、流下方向の１００ｍｍ毎
に温度分布を調節することが可能となり、板ガラス５の
引き延ばし成形をさらに安定させることができる。In place of the heating element 3, a plurality of heating elements 3a are arranged so as to be arranged in predetermined sections in the flowing direction, for example, 100 m.
By automatically controlling the temperature for each m, the temperature distribution of the molten glass 4 in the predetermined section in the width direction can be adjusted for every 100 mm in the flowing direction, and the stretching of the sheet glass 5 can be further stabilized. Can be.
【００１９】本発明では、上記のように配置された発熱
体３、３ａにより、成形体２の側壁面２ｂを流下する溶
融ガラス４の厚さを横幅方向の所定区画毎及び流下方向
の所定区画毎に調節することができるので、成形された
板ガラス５の横幅方向の肉厚に変化が生じた場合でも、
従来のように成形体２の下頂部２ｃより下の領域で温度
調節する必要がなく、幅広い均一な板厚部分を有する板
厚形状、所望の範囲内でほぼ均一な分布を有する内部歪
み、所望の範囲内にある反り及び表面精度に非常に優れ
た板ガラス５を安定して得ることができる。In the present invention, the thickness of the molten glass 4 flowing down the side wall surface 2b of the molded body 2 is determined by the heating elements 3 and 3a arranged as described above for each predetermined section in the width direction and for each predetermined section in the flowing direction. Since it can be adjusted every time, even if the thickness of the formed sheet glass 5 in the width direction changes,
It is not necessary to adjust the temperature in the region below the lower apex 2c of the compact 2 as in the prior art, the plate thickness shape having a wide uniform plate thickness portion, the internal strain having a substantially uniform distribution within a desired range, The sheet glass 5 having extremely excellent warpage and surface accuracy within the range of (1) can be stably obtained.
【００２０】[0020]
【発明の効果】本発明の板ガラスの成形方法および成形
装置は、上記のような構成により、所望の板厚形状、内
部歪み、反り及び表面精度に優れた板ガラスを連続的に
製造することができる実用上優れた効果を奏するもので
ある。The method and apparatus for forming a glass sheet of the present invention can continuously produce a glass sheet having the desired thickness, internal distortion, warpage and surface accuracy with the above-described structure. It has a practically excellent effect.
【図１】 本発明の板ガラス成形装置の説明図であって
（Ａ）は発熱体の配置を示す図、（Ｂ）は要部断面図、
（Ｃ）は好ましい発熱体の説明図。FIG. 1 is an explanatory view of a sheet glass forming apparatus of the present invention, wherein (A) is a view showing an arrangement of a heating element, (B) is a sectional view of a main part,
(C) is an explanatory view of a preferred heating element.
【図２】 従来の板ガラス成形装置の説明図。FIG. 2 is an explanatory view of a conventional sheet glass forming apparatus.
１ 保温壁 １ａ 成形室 １ｂ 開口部 ２ 成形体 ２ａ オーバーフロー溝 ２ｂ 側壁面 ２ｃ 下頂部 ３、３ａ 発熱体 ４ 溶融ガラス ５ 板ガラス DESCRIPTION OF SYMBOLS 1 Heat insulation wall 1a Molding chamber 1b Opening 2 Molded object 2a Overflow groove 2b Side wall surface 2c Lower top part 3, 3a Heating element 4 Molten glass 5 Sheet glass
Claims (4)
フロー溝を有する成形体に溶融ガラスを供給し、該成形
体のオーバーフロー溝から両側に溶融ガラスを溢れさせ
て両側の側壁面を流下させた後に各々の溶融ガラスを成
形体の下頂部で融合させて板ガラスを成形する板ガラス
の成形方法において、前記成形体の側壁面を流下する溶
融ガラスを、その横幅方向の所定区画毎に温度調節する
ことを特徴とする板ガラスの成形方法。1. A molten glass is supplied to a molded article having a substantially wedge-shaped cross section and having an overflow groove at an upper portion, and the molten glass overflows from both sides of the overflow groove of the molded article to flow down both side wall surfaces. In a sheet glass forming method of forming a sheet glass by subsequently fusing each molten glass at a lower top portion of the formed body, the temperature of the molten glass flowing down the side wall surface of the formed body is adjusted for each predetermined section in the width direction. A sheet glass forming method characterized by the above-mentioned.
一部の区画の溶融ガラスを、その流下方向の所定区画毎
に温度調節することを特徴とする請求項１に記載の板ガ
ラスの成形方法。2. The method for forming a sheet glass according to claim 1, wherein the temperature of the molten glass in at least a part of the section in the width direction of the molten glass is adjusted for each predetermined section in the flowing direction.
温壁と、前記成形室内に設けられ板ガラスを成形する断
面が略くさび形の成形体とを備え、前記成形体は、上部
に溶融ガラスのオーバーフロー溝と、該オーバーフロー
溝の両側に溢れる溶融ガラスを流下させるための側壁面
と、下部に側壁面を流下した後の各々の溶融ガラスを融
合させる下頂部とを有し、前記成形体の側壁面を流下す
る溶融ガラスに対して、横幅方向の所定区画毎に、複数
の発熱体を近接配置したことを特徴とする板ガラスの成
形装置。3. A heat insulating wall having an opening below and forming a forming chamber, and a formed body provided in the forming chamber and having a substantially wedge-shaped cross section for forming a sheet glass, wherein the formed body is provided at an upper part thereof. Having an overflow groove of molten glass, a side wall surface for causing molten glass overflowing on both sides of the overflow groove to flow down, and a lower apex portion for fusing each molten glass after flowing down the side wall surface to a lower portion, A plate glass forming apparatus, wherein a plurality of heating elements are arranged in close proximity to a molten glass flowing down a side wall surface of a body for each predetermined section in a lateral width direction.
一部の区画の溶融ガラスに対して、その流下方向の所定
区画毎に、複数の発熱体を近接配置したことを特徴とす
る請求項３に記載の板ガラスの成形装置。4. The method according to claim 3, wherein a plurality of heating elements are arranged in close proximity to the molten glass in at least a part of the section in the width direction of the molten glass in each predetermined section in the flowing direction. The sheet glass forming apparatus according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11204759A JP2001031434A (en) | 1999-07-19 | 1999-07-19 | Forming of plate glass and forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11204759A JP2001031434A (en) | 1999-07-19 | 1999-07-19 | Forming of plate glass and forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001031434A true JP2001031434A (en) | 2001-02-06 |
Family
ID=16495886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11204759A Pending JP2001031434A (en) | 1999-07-19 | 1999-07-19 | Forming of plate glass and forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001031434A (en) |
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| WO2003055813A1 (en) * | 2001-12-21 | 2003-07-10 | Corning Incorporated | Process for producing sheet glass by the overflow downdraw fusion process |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440566B1 (en) * | 1969-10-06 | 1979-12-04 | ||
| JPH02217327A (en) * | 1989-02-15 | 1990-08-30 | Nippon Electric Glass Co Ltd | Production of glass plate |
-
1999
- 1999-07-19 JP JP11204759A patent/JP2001031434A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440566B1 (en) * | 1969-10-06 | 1979-12-04 | ||
| JPH02217327A (en) * | 1989-02-15 | 1990-08-30 | Nippon Electric Glass Co Ltd | Production of glass plate |
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