WO2008029799A1 - Procédé de fabrication de verre - Google Patents

Procédé de fabrication de verre Download PDF

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Publication number
WO2008029799A1
WO2008029799A1 PCT/JP2007/067204 JP2007067204W WO2008029799A1 WO 2008029799 A1 WO2008029799 A1 WO 2008029799A1 JP 2007067204 W JP2007067204 W JP 2007067204W WO 2008029799 A1 WO2008029799 A1 WO 2008029799A1
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WO
WIPO (PCT)
Prior art keywords
glass
raw material
platinum
less
value
Prior art date
Application number
PCT/JP2007/067204
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English (en)
Japanese (ja)
Inventor
Satoko Konoshita
Fumio Sato
Akihiko Sakamoto
Original Assignee
Nippon Electric Glass Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Electric Glass Co., Ltd. filed Critical Nippon Electric Glass Co., Ltd.
Priority to CN2007800325783A priority Critical patent/CN101511742B/zh
Publication of WO2008029799A1 publication Critical patent/WO2008029799A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/18—Stirring devices; Homogenisation
    • C03B5/193—Stirring devices; Homogenisation using gas, e.g. bubblers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
    • C03B5/43—Use of materials for furnace walls, e.g. fire-bricks
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/02—Pure silica glass, e.g. pure fused quartz
    • C03B2201/03—Impurity concentration specified
    • C03B2201/04—Hydroxyl ion (OH)
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/20—Doped silica-based glasses doped with non-metals other than boron or fluorine
    • C03B2201/23—Doped silica-based glasses doped with non-metals other than boron or fluorine doped with hydroxyl groups

Definitions

  • the present invention relates to a glass manufacturing method, and more particularly to a glass manufacturing method used for optical pickup lenses of CD, MD, DVD and other various optical disk systems, video camera and general camera photographing lens components, and the like.
  • This kind of glass not only satisfies a predetermined optical constant (refractive index, Abbe number), but also has an optically very homogeneous degree free from internal defects such as bubbles, foreign matter, and striae. It is required to be high glass.
  • Patent Document 1 Japanese Published Patent: JP 2000-302479 A
  • Patent Document 2 Japanese Published Patent: Japanese Unexamined Patent Application Publication No. 2004-292306
  • Patent Document 3 Japanese Published Patent: JP 2005-15302
  • Patent Document 4 Japanese Patent: JP 2005-139023
  • Patent Document 5 Japanese Published Patent: Special Table 2001-500098
  • Patent Document 6 Japanese Published Patent: Japanese Patent No. 3485275
  • Non-Patent Document 1 JH Campbell et. Al., Elimination of Platinum Inclusio ns in Phosphate Laser Glasses, Lawrence Livermore National Labor atory, CA, UCRL- 53932 (1989)
  • platinum bush minute foreign substances due to the platinum container are likely to be generated in the glass.
  • the amount of platinum is greatly increased by remelting.
  • a large amount of white gold is a serious problem that can be a fatal defect for recent high-density image sensors.
  • An object of the present invention is to provide a glass manufacturing method in which the homogeneity is optically high and the platinum bushing is hardly increased even after remelting.
  • the amount of platinum dissolved is 0.1 lppm or more and less than lOOppm, and the ⁇ -OH value is 0 ⁇ 07 / mm or more and 0 ⁇ 30 / mm or less.
  • the glass raw material batch is selected and / or the melting conditions are adjusted.
  • an appropriate melting equipment is selected and a glass raw material is appropriately selected so that the platinum dissolution amount and / 3—OH value of the finally obtained glass are included in a predetermined range.
  • the melting conditions such as the melting temperature and the melting time are adjusted.
  • Platinum dissolution amount is measured by the following method. First, a ground glass sample is decomposed with a mixed acid (HF, HCLO, HNO, HC1) and then evaporated by heating to dryness to obtain a salt. Dry
  • the second glass production method of the present invention is a method for producing glass in which a glass raw material batch is melted in a platinum container and molded to produce a material glass, and then the material glass is re-melted in a platinum container.
  • the selection of the glass raw material batch and / or the melting conditions so that the ⁇ OH value of the glass after remelting is 0.30 / mm or less, preferably 0.07 / mm or more and 0.30 / mm or less. It is characterized by adjusting.
  • the glass raw material batch is melted and vitrified to produce a raw glass, this is remelted to form a homogeneous glass, and a high-quality glass product is obtained.
  • Adopt the production method select an appropriate melting equipment, select an appropriate glass raw material so that the / 3-OH value of the glass after remelting falls within the specified range, and select the melting conditions such as melting temperature and melting time. Adjust. When remelting the material glass, it is possible to add a different kind of glass in addition to the produced material glass.
  • Container is a general term for equipment that can accommodate molten glass inside.
  • crucibles in batch-type melting equipment melting tanks in refining melting equipment, clarification tanks, agitation tanks, forehouses, etc.
  • Platinum container means a container in which at least the contact surface with molten glass is formed of platinum or a platinum alloy, and is not limited to a container of platinum or a platinum alloy force. Or a container covered with platinum alloy foil.
  • the glass raw material batch is selected, the melting conditions are adjusted, and the melting equipment is selected so that the ⁇ -OH value of the material glass is 0.35 / mm or less. It is preferable.
  • the third glass production method of the present invention is a method for producing glass in which a glass raw material batch is melted in a platinum container and molded to produce a material glass, and then the material glass is re-melted in a platinum container.
  • the glass raw material batch is selected and / or the melting condition is adjusted so that the / 3-OH value of the material glass is 0.35 / mm or less, preferably 0.1 / mm or more and 0.35 / mm or less. It is characterized by performing.
  • the glass raw material batch is once melted and made into glass to produce a material glass, which is then remelted to form a homogeneous glass. Adopt the method of manufacturing glass products.
  • the amount of platinum dissolved in the material glass is 0.1 lppm or more, preferably 0.5 ppm or more, particularly preferably 1 ppm or more, and more preferably 2 ppm or more. It is desirable to apply to glass.
  • the glass raw material batch preferably contains 0.;! To 10% by mass of nitrate and / or a raw material containing chlorine of 0.;! To 15% by mass.
  • the glass is preferably an alkali-containing silicate glass, particularly an alkali-containing borosilicate glass.
  • glass raw material examples include SiO 5 to 75%, B 2 O 3 to 40% by mass%, RO (R: Ca,
  • RO Ca, Sr ,: one or more selected from Ba, Zn
  • R ' ⁇ R ,: Li, Na
  • the glass raw material batch contains substantially no lead, arsenic or fluoride.
  • substantially free means that no active ingredients are added unless it is inevitably mixed in as an impurity.
  • the content of lead, arsenic, and fluoride is limited to less than 0.1% by mass.
  • “%” means “mass%” unless otherwise specified.
  • the glass thus obtained is suitably used for optical glass or glass material for mold press molding glass.
  • the glass of the present invention is manufactured by the above method.
  • the invention's effect [0023] According to the method of the present invention, it is possible to produce a glass having high optical homogeneity and less platinum. Therefore, it is suitable as a method for producing high-quality optical glass such as optical pickup lenses for CD, MD, DVD and other various optical disk systems, video cameras and photographing lenses for general cameras.
  • a method called a mold press molding method is widely adopted, but the method of the present invention is suitable as a method for producing a glass material used for the mold press molding. .
  • the 13 OH value of the material glass is 0.35 / mm or less (especially 0.25 / mm or less, further 0.24 / mm or less, optimally 0.23 / mm or less. Preferred), and / or after remelting, the / 3 OH value of the glass is 0.30 / mm or less (especially 0.25 / mm or less, furthermore 0.23 / mm or less, 0.20 / mm or less, Optimally, it is preferably 0.18 / mm or less), and the glass is produced by adjusting each step so that Moisture in the glass is mainly brought from the glass raw material and melted from the melting atmosphere.
  • the melting equipment and the glass raw material are selected and the melting conditions are adjusted so that the / 3-OH value representing the moisture content of glass is below a predetermined level.
  • Platinum in glass is caused by melting from a platinum container or the like used in a glass production facility.
  • the smaller the amount of platinum dissolved in the material glass the smaller the possibility that platinum will occur during remelting.
  • a material glass having a large amount of platinum dissolved is likely to generate platinum batter, and thus has a great merit by applying the present invention.
  • the platinum dissolution amount of the material glass and the glass after remelting is preferably 50 ppm or less.
  • 20 ppm or less is preferable, and 10 ppm or less is more preferable.
  • various raw materials are prepared so as to have a desired composition.
  • the method of the present invention can be applied to various glass materials, and is not limited to a specific composition, but borosilicate glass widely used especially for optical glass can be preferably used.
  • the “borosilicate glass” as used in the present invention contains 5% or more, particularly 20% or more of SiO, and 3% of B 2 O.
  • % Glass or more.
  • the / 3-OH value of the glass tends to increase because the boric acid raw material easily absorbs water. Therefore, it is effective if the present invention is applied to the production of borosilicate glass. It can also be suitably applied to alkali-containing silicate glasses.
  • alkali-containing silicate glass is composed of 5% SiO.
  • a glass containing 2 or more, particularly 20% or more, and containing an alkali metal component contains an alkali metal component, so it has a relatively high amount of platinum that easily reacts with platinum. Therefore, it does not contain alkali! /, And there is a high risk of platinum platinum formation compared to silicate glass. Therefore, a great merit can be obtained by applying the present invention.
  • alkali-containing borosilicate glass containing BO and alkali metal components are produced by applying the present invention.
  • the “alkali-containing borosilicate glass” as used in the present invention is composed of 5% or more of SiO, 3% or more of B 2 O, and an alkali metal component.
  • a glass having a low melting point specifically a glass having a softening point of 650 ° C or lower, similarly to the alkali-containing glass, has a high risk of reacting with platinum and immediately producing platinum. Therefore, it is possible to enjoy great merits by applying the present invention to such glass.
  • glass compositions capable of enjoying the effects of the present invention include, for example, lead, arsenic, and fluoride,
  • R ' ⁇ (R': one or more selected from Li, Na, K) 0 to 12%
  • R ' ⁇ (R': one or more selected from Li, Na, K) 0-; 12%
  • An alkali-containing borosilicate glass to be contained is suitable.
  • SiO is 5% or more, 10% or more, 20% or less
  • the amount of SiO in the glass that can fully enjoy the effects of the present invention is 75% or less, 70% or less, 60% or less, 55% or less, especially 50%.
  • the amount of B 2 O in glass that can fully enjoy the effects of the present invention is 3% or more, 5% or more, 10% or more, 1
  • It is preferably 9% or more, particularly 20% or more, and preferably 40% or less, 35% or less, 30% or less, 27% or less, particularly 25% or less.
  • RO (R: one or more selected from Ca, Sr, Ba, Zn) is a component that affects the amount of platinum dissolved in the glass.
  • the total RO content is 2% or more, 5% or more, 10% or more, 12% or more, particularly preferably 15% or less, 30% or less, 27% or less, especially 25% or less. It is preferable.
  • CaO is preferably 4 to 10%, and SrO 0 to 15%.
  • R'0 (R ': one or more selected from Li, Na, K) is also dissolved in platinum in the same manner as RO.
  • R'O is essential
  • the total content is preferably 3% or more, particularly preferably 5% or more. It is preferably 12% or less, particularly preferably 10% or less.
  • Al O is not an essential component, but it is preferable to contain 0.5% or more, and 15% or less.
  • it is preferably 8% or less.
  • La O is not an essential component, but 0.5% or more, particularly 10% or more is preferable. In addition, it is preferably 50% or less, 40% or less, 30% or less, 20% or less, particularly 15% or less.
  • various components may be added to the glasses of the above (1) to (7).
  • the present invention can also be applied to glasses having a composition system other than the exemplified silicate glass, borosilicate glass, alkali-containing borosilicate glass, and alkali-containing lanthanum borosilicate glass.
  • so-called phosphate glass containing 5% or more of PO has high reactivity with platinum.
  • the merit of applying the present invention is very small because there is almost no possibility that the dissolved platinum is precipitated and platinum platinum is generated.
  • application of the present invention to phosphate glass is not excluded.
  • the glass raw material it is desirable to select the raw material so that the water content is as low as possible.
  • hydroxide introduces moisture into the glass and should be avoided as much as possible.
  • an anhydrous compound is preferable because it does not contain moisture.
  • nitrate As a raw material. Its proportion of the whole batch 0.1 to; 10 mass 0/0, preferably 0.5; a ⁇ 5 wt%!.
  • nitric acid volatilizes with the hydroxyl group when the glass is melted, so that the moisture content of the glass can be reduced.
  • the above effect can be expected when the ratio of nitrate is 0.1% by mass or more. However, using more than 10% by mass is not preferable because the amount of platinum dissolved in the glass from the platinum container increases.
  • a raw material containing chlorine is also effective in reducing moisture in the glass. If a chlorine-containing raw material is included, chlorine will volatilize with the hydroxyl groups when the glass is melted, reducing the moisture in the glass. The proportion of the chlorine-containing raw material is 0.;! To 15% by mass, preferably 0.;! To 8% by mass. If the content of the chlorine-containing raw material is 0.1% by mass or more, the above effect can be expected. However, if it exceeds 15 mass%, the chlorine concentration in the glass product becomes too high, which may corrode the mold during press molding. Moreover, there is a concern that the weather resistance of the glass product will be lowered.
  • the glass raw material batch is melted in a platinum container.
  • a method such as bubbling an inert gas (argon gas or nitrogen gas) or a halogen atom-containing gas (fluorine gas or chlorine gas) at the time of melting is available. It is effective. Also It is desirable to select a heating method that reduces the moisture in the atmosphere as much as possible. For example, when glass is melted by burner heating, the amount of moisture in the atmosphere can be reduced by adopting the air combustion method rather than the oxyfuel combustion method. Moreover, if part of the burner heating is switched to electric melting, the amount of moisture in the atmosphere can be further reduced.
  • a molten glass is formed to produce a material glass.
  • the material glass molding is not particularly limited. What is necessary is just to shape
  • the material glass is once produced.
  • the amount of moisture in the produced material glass is controlled by selecting the glass raw material notch and adjusting the melting conditions.
  • the / 3-OH of the material glass is preferably 0.35 / mm or less, more preferably 0.25 / mm or less, even more preferably 0.24 / mm or less, especially 0.23 / mm or less. Can be adjusted.
  • the / 3—OH value of the material glass By setting the / 3—OH value of the material glass to 0.35 / mm or less, it is possible to prevent a large amount of platinum from being deposited in the subsequent remelting process.
  • the material glass is remelted in a platinum container.
  • remelting it becomes possible to obtain glass with extremely high homogeneity.
  • the molten glass is formed into a desired shape to obtain the target glass.
  • the water content of the obtained glass is controlled by selecting a glass raw material batch, adjusting a melting condition, or the like.
  • the / 3-OH value of the glass finally obtained is 0.30 / mm or less, preferably 0.25 / mm or less, more preferably 0.23 / mm or less, and even more preferably 0.20 / mm. In the following, it becomes possible to adjust especially to below 0.18 / mm. If the / 3—OH value of the glass after remelting is adjusted to 0.30 / mm or less, the amount of platinum contained in the glass will not increase significantly even after remelting.
  • the produced glass is not necessarily formed into a shape to be finally used.
  • it when it is used as a glass material for mold press molding, it should be molded into a shape suitable for mold press molding.
  • Table 1 shows the composition of the glass used in this experiment.
  • Tables 2 to 5 show examples of the present invention (Examples 1 to 8, 1;! To 16) and comparative examples (Examples 9 and 10).
  • Example 1 Example 2
  • Example 3 Example 4 Glass composition Glass A Glass B Glass B Glass B Batch weight (g) 300 300 300 300 300
  • Example 5 Example 6
  • Example 7 Example 8 Glass composition Glass B Glass B Glass B Glass B
  • Example 9 Example 10 Example 1 1 Example 12 Glass composition Glass B Glass B Glass C Glass D Batch weight (g) 4000 4000 500 500
  • Example 1 Example 14
  • Example 15 Example 16 Glass composition Glass E Glass E Glass F Glass F Batch weight (g) 300 300 300 300 300
  • each sample was prepared as follows. First, the oxides, aluminum oxide, boric anhydride, orthoboric acid, barium carbonate, barium nitrate, carbonate so as to have the composition shown in Table 1 (the numerical values shown in Table 1 mean “mass%”). Calcium, strontium carbonate, zinc oxide, lithium carbonate, soda ash, sodium nitrate, lanthanum oxide, and antimony trioxide were prepared. Tables 2-5 show the ratios of the raw materials used for sodium raw materials (soda ash, sodium nitrate), barium raw materials (barium carbonate, barium nitrate), and boric acid raw materials (boric anhydride, orthoboric acid).
  • the raw material batch was placed in a platinum crucible and melted in the air under the conditions shown in Tables 2-5. Thereafter, the molten glass was poured out on a carbon table and formed into a plate shape. The obtained material glass was measured for —OH value and platinum dissolution. Platinum platinum We counted the number of pieces.
  • each material glass was pulverized, put into a platinum crucible, and remelted. Thereafter, the molten glass was poured onto a carbon table and formed into a plate shape. About the obtained glass sample, (beta) OH value and platinum dissolution amount were measured. In addition, the number of platinum books was counted and the amount of increase in platinum books before and after remelting was calculated.
  • Figure 1 shows the relationship between the / 3 — OH value of the glass material and the increase in the number of platinum particles before and after remelting.
  • Figure 3 shows the relationship between the / 3 — OH value of the glass sample (glass after remelting) and the platinum particles contained in the sample.
  • Figure 2 shows the relationship between the numbers.
  • glasses A to F have different strengths of glass S.
  • the lower the / 3 — OH value of the base glass the lower the increase in platinum black due to remelting. It can be seen that there is a tendency to Similarly, it can be confirmed that the lower the / 3-OH value of the finally obtained glass, the smaller the amount of platinum contained in the glass.
  • the number of platinum books in the glass sample is 100 m. There were 3 or more.
  • the platinum book in the sample was less than 53.4 / cm 3 .
  • the / 3 — OH value was measured as follows. First, the produced glass material or glass sample was cut into a size of 20 ⁇ 20 ⁇ 2 mm, the surface was processed into a mirror surface with cerium polishing powder, and the transmission spectrum was measured using FT-IR. Then, it calculated using the following formula.
  • ⁇ ⁇ value (1 / X) log 10 ( ⁇ / ⁇ )
  • the amount of dissolved platinum was measured as follows. First, the ground glass sample was decomposed with a mixed acid (HF, HC LO, HNO, HC1) and then evaporated by heating to dryness to obtain a salt. Then dry
  • Nitric acid was added to the salt sample and classified, and then analyzed and quantified with an ICP mass spectrometer.
  • the number of platinum books was determined as follows. First, the produced material glass or glass sample was cut into 35 X 35 XI 5 mm, and the surface was processed into a mirror surface with cerium polishing powder, and then placed on a microscope sample stage. Furthermore, parallel light was incident from the side of the sample, and platinum books were counted and converted to the number per lc m 3 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un verre qui présente un degré d'homogénéité optique élevé et qui, lorsqu'il est refondu, inhibe n'importe quelle augmentation substantielle de granules de platine. L'invention concerne un procédé de fabrication de verre par la fusion d'un lot de matière brute de verre dans un récipient en platine, par le moulage en un verre préformé, par la re-fusion du verre préformé dans un récipient en platine et par le moulage, caractérisé en ce que la sélection du lot de matière brute de verre et/ou la régulation des conditions de fusion est effectuée de telle sorte que la valeur β-OH du verre après la re-fusion est de 0,30/mm ou moins.
PCT/JP2007/067204 2006-09-04 2007-09-04 Procédé de fabrication de verre WO2008029799A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007800325783A CN101511742B (zh) 2006-09-04 2007-09-04 玻璃的制造方法

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JP2006238853 2006-09-04
JP2006-238853 2006-09-04

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WO2008029799A1 true WO2008029799A1 (fr) 2008-03-13

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US11174192B2 (en) 2014-09-30 2021-11-16 Corning Incorporated Methods and glass manufacturing system for impacting compaction in a glass sheet
US20200130325A1 (en) * 2017-04-27 2020-04-30 Nippon Electric Glass Co., Ltd. Carrier glass and method for producing same
CN109626817B (zh) * 2019-01-09 2022-03-04 湘潭大学 一种硝酸铅的应用，中红外氟氧化物硅酸盐稀土掺杂玻璃及其制备

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JP2005139023A (ja) * 2003-11-06 2005-06-02 Nippon Electric Glass Co Ltd モールドプレス成形用光学ガラス
WO2006080444A1 (fr) * 2005-01-31 2006-08-03 Nippon Sheet Glass Company, Limited Procede de production de verre

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