WO2004058652A1 - ガラス板の急冷強化方法及びその装置 - Google Patents
ガラス板の急冷強化方法及びその装置 Download PDFInfo
- Publication number
- WO2004058652A1 WO2004058652A1 PCT/JP2003/014881 JP0314881W WO2004058652A1 WO 2004058652 A1 WO2004058652 A1 WO 2004058652A1 JP 0314881 W JP0314881 W JP 0314881W WO 2004058652 A1 WO2004058652 A1 WO 2004058652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass plate
- microwave
- quenching
- air
- glass
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
- C03B29/08—Glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
Definitions
- the present invention relates to a quenching and tempering method for a flat tempered glass sheet and an apparatus therefor.
- the quenching enhancement device 100 is composed of a waveguide 11 1, a housing 1 12, a door 1 13, upper and lower air blow tubes 1 14, 1 15, and an arm 1 16. It is equipped with.
- Reference numeral 110 denotes a glass plate.
- the above-mentioned quenching strengthening device 100 raises the door 1 13, puts the glass plate 1 10 placed on the arm 1 1 6 into the housing 1 1 2, and supplies it via the waveguide 1 1 1
- the glass plate 110 is heated by mouth waves, and at the same time, the glass plate 110 is quenched by blowing air from upper and lower air pipes 114, 115 to obtain tempered glass.
- the quenching and strengthening device 100 shown in FIG. 12 is a quenching and strengthening device for a glass plate using microwaves.
- the microwave is blocked by the air blow tube 114, and a sufficient amount of microwave is supplied to the glass plate 110. Do not reach. Therefore, the desired tempered glass cannot be obtained.
- the conventional quenching strengthening device 100 shown in Fig. 12 is not suitable for strengthening a flat glass plate that requires flatness accuracy. It can be said that it is correct.
- the air blow pipe becomes large and blocks microwaves, so that good quenching and strengthening cannot be performed.
- a quenching enhancement device that can enhance both cooling performance and heating performance in quenching enhancement is desired.
- the present invention includes a step of heating a glass sheet on a conveying roller to a predetermined temperature in a heating furnace, and a step of heating the glass sheet adjacent to a plurality of air ducts of a quenching strengthening device arranged at substantially equal intervals in a conveying direction of the glass sheet. Irradiating one or both sides of the glass plate with a scattering microphone or a converging microwave through a gap between the glass plates, and simultaneously irradiating the microwave with the microwave from the plurality of air ducts without contacting a conveying roller; A cooling air blowing step of blowing cooling air to one or both surfaces of the glass plate;
- the temperature at the center of the thickness of the glass plate is increased by heating with microwaves. Cooling with cooling air lowers the surface temperature of the glass sheet. As a result, a large temperature difference is generated between the surface and the center, and even a thin glass plate can be a tempered glass plate.
- the air cooling is performed in the air duct while irradiating the glass plate with the microwave through the gap between the adjacent air ducts, so that both the microwave heating and the air cooling can be performed simultaneously.
- the flatness of the glass plate can be maintained, and a high-quality flat reinforced glass plate can be provided.
- the scattered microwave refers to a microwave scattered by multiple reflections, and an irradiation amount can be secured even in a shadow area of an obstacle due to multiple reflections.
- the present invention is preferably the frequency of the microwave, 1 8 GH Z ⁇ 3 0 0 G H z. Below 18 GHz, an arc is generated in the metal parts that make up the casing. Beyond 300 GHz, microwave oscillators become special and extremely expensive. Therefore, the frequency of random microwave diffuser to suppress the apparatus cost while suppressing the occurrence of arc ranged from 1 8 GH z ⁇ 300 GH Z.
- An oscillator called a gyrotron may be used to oscillate a microwave having such a frequency.
- a microwave oscillator there is also a magnetron crystaltron, but a gyrotron having a practical oscillation frequency of 11 to 300 GHz is preferable.
- the converging microwave used in the method of the present invention is preferably a scanning converging microphone mouth wave scanned by an oscillating mirror.
- the microwave beam is evenly applied to the glass plate by the oscillating mirror.
- a glass plate having a large area can be uniformly heated as the glass plate advances while being a beam.
- the convergent microwave is preferably a band-shaped convergent microwave that is converged on a band having a length corresponding to the width of the glass plate. That is, the glass plate is irradiated with the band-shaped microwave. Since the oscillating mirror is unnecessary, there is no need to worry about troubles such as malfunction of the oscillating mirror.
- the thickness of the glass plate used in the method of the present invention is preferably from 1.2 mm to 2.5 mm. If the thickness of the glass plate is less than 1.2 mm, the temperature difference between the center of the thickness and the surface is insufficient even with microwave irradiation, making the production of tempered glass difficult. If the thickness of the glass plate is more than 2.5 mm, the temperature difference can be relatively easily made, and the existing quenching and strengthening device can cope with it. No need. Therefore, the method of the present invention is preferably applied to a glass plate having a thickness of 1.2 mm to 2.5 mm.
- the present invention further provides a quenching and strengthening apparatus for a glass sheet installed downstream of a heating furnace for heating a glass sheet traveling on a conveying roller to a predetermined temperature, the apparatus being substantially above and / or below the glass sheet.
- a dome-shaped chamber having an inner surface as a reflecting surface, a reflector provided near the center of the dome, and a waveguide provided on the champ and guiding the microwave toward the reflector To quench the upper surface and / or lower surface of the glass sheet with air at substantially equal intervals along the running direction of the glass sheet.
- a plurality of air ducts which are arranged at intervals and have a gap through which microwaves pass therethrough, wherein the microwaves are primarily reflected by the reflector, and are secondarily reflected by the inner surface of the dome-shaped channel. This provides a glass plate quenching and strengthening device that irradiates microwaves to the glass plate.
- the microwave is primarily reflected by the reflector 1 and secondarily reflected by the inner surface of the dome-shaped chamber 1. Since the reflector is provided almost at the center of the dome, the microwave after secondary reflection is almost perpendicularly incident on the surface of the glass plate and is irradiated on the glass plate. Therefore, the glass plate can be effectively heated.
- the reflection surface of the champer of the device of the present invention is a diffuse reflection surface
- the primary reflection is reflection toward the inner surface of the chamber
- the secondary reflection is diffuse reflection.
- the microwave is reflected by the reflector 1 and directed toward the inner surface of the chamber 1 and is irregularly reflected by the inner surface of the chamber 1.
- Microwaves travel to the glass plate in the form of diffuse reflection. Because of the irregular reflection, the microwave can be irradiated to every corner of the glass plate, and the glass plate can be heated effectively.
- the reflector preferably includes a rotation means for rotating the waveguide around the central axis of the waveguide. By rotating the reflector, microwaves are first reflected uniformly in the chamber, and the effect of multiple reflections is added later, so that the glass plate can be more uniformly heated.
- the lower air duct of the plurality of air ducts of the device of the present invention is preferably disposed directly below the transfer port roller, and the lower air duct has a plurality of nozzles, and the plurality of nozzles are air blown out. It is arranged so as not to hit the transport roller.
- FIG. 1 is a schematic diagram of a tempered glass manufacturing apparatus using the quenching tempering apparatus according to the present invention.
- FIG. 2 is a detailed sectional view of the quenching strengthening device according to the present invention shown in FIG.
- FIG. 3 is a sectional view taken along line 3-3 in FIG.
- FIG. 4 is a sectional view taken along line 4-4 in FIG.
- FIG. 5 is an enlarged cross-sectional view of five parts in FIG.
- FIG. 6 is an arrow view taken along line 6-6 in FIG.
- FIG. 7 is a diagram showing a reflection state when microwaves are irradiated in the quenching enhancement device of the present invention.
- FIG. 8A shows a state of irradiation of a directional microwave
- FIG. 8B shows a state of scattered irradiation of a microphone mouth wave.
- FIG. 9 is a cross-sectional view showing the inner surface of one chamber having a diffuse reflection surface.
- FIG. 10 is a view showing another embodiment of the quenching enhancement apparatus, in which an oscillating mirror is provided in the chamber 1 to reflect a converging microwave and heat the chamber.
- FIG. 11 is a diagram showing an example of a chamber formed in a polyhedron.
- FIG. 12 is a diagram showing a conventional quenching strengthening device. BEST MODE FOR CARRYING OUT THE INVENTION
- the tempered glass manufacturing apparatus 10 shown in FIG. 1 includes a plurality of transport rollers 11 for horizontally transporting a glass sheet, a heating furnace 12 for heating the glass sheet to a predetermined temperature, and a downstream of the heating furnace 12.
- the apparatus includes a quenching and strengthening device 20 for a glass plate including a provided primary cooling device, and a secondary cooling device 13 provided downstream of the quenching and strengthening device 20.
- the predetermined temperature refers to a temperature at which the glass sheet can be rapidly cooled and strengthened.
- the glass plate is heated by microwaves during rapid cooling of the glass plate.
- the surface of the glass plate is air-cooled while heating the central portion of the glass plate thickness to a temperature necessary for strengthening by microwaves, and the temperature difference between the central portion and the surface of the glass plate thickness is increased. By adding a mark, it will be strengthened.
- the secondary Cool sufficiently with cooling device 13. Since the secondary cooling device 13 may be a simple air cooling device, the description of the structure is omitted.
- the quenching strengthening device 20 has an upper air blow unit 21 and an upper champ 23 and a lower champ 24 surrounding the lower air blow unit 22, respectively.
- These chambers 23, 24 are formed in a dome shape, and the inner surface is a reflection surface 25, 25.
- Reflectors 26 and 28 are arranged near the center of the dome. These reflectors 26 and 28 are rotated by rotating means 31 and 32.
- the upper and lower waveguides 33, 34 are connected to the chambers 23, 24.
- Exhaust pipes 35, 36 extend from the champers 23, 24. The outlets of these exhaust pipes 35, 36 are covered with safety force pars 37, 38.
- exhaust pipes 35 and 36 are provided so that the blow-in air can be discharged out of the champers 23 and 24 with these exhaust pipes 35 and 36.
- An exhaust fan may be provided in the exhaust pipes 35 and 36 for forced exhaust.
- microwaves leak through the exhaust pipes 35, 36, cover the safety members 37, 38 to prevent operators and workers from being directly exposed to microwaves.
- the waveguides 33, 34 protrude a certain length into the chambers 23, 24.
- the fixed length is preferably a length reaching an intermediate point between the inner surfaces of the chambers 23 and 24 and the reflectors 26 and 28.
- the reflectors 26 and 28 are preferably polyhedrons. Further, it is desirable that the reflectors 26 and 28 are rotated around the central axes of the waveguides 33 and 34 by rotating means 31 and 32 such as a motor with a reduction gear. This is because microwave irradiation can be made uniform.
- the inlet (and outlet) of the quenching and strengthening device 20 is a cut surface of the chambers 23 and 24 and has a semicircular cross section. For this reason, the cut surface and the reflective surface The microwaves reflected at 25 and 25 are multiple reflected within the chamber.
- the upper air blow unit 21 includes a plurality of side duct portions 39, 39 extending in the front and rear directions of the drawing, an air duct 41 bridged between the side duct portions 39, 39, and the air duct 4 It consists of a plurality of nozzles 4 2 and 4 3 attached to 1.
- the plurality of air ducts are substantially equally spaced to allow for uniform cooling.
- the lower air unit 22 has the same structure as the upper air unit 21.
- the lower air duct 41 A is disposed directly below the transport roller 11.
- the transport roller 11 cannot be seen behind the air duct 41A. That is, the microwaves directed to the glass plate G from below do not hit the transport rollers 11.
- the front nozzle 42A and the rear nozzle 43A which are inclined at the lower air duct 41A, are installed, and the air blown up from these nozzles 42A, 43A directly hits the transport roller 11 without hitting it. However, it was devised to reach the glass plate G.
- the pitch between the lower air ducts 41A and 41A is set to 2P1. If the width W of the educt 41A is adjusted to P1, a gap 44 of P1 length can be secured between the air ducts 41A and 41A.
- the upper air ducts 41B and 41B are arranged symmetrically (linearly symmetrically) with the lower air ducts 41A and 41A with the glass plate G interposed therebetween. Therefore, a gap 44 having a length of P1 can be secured between the air ducts 41B and 41B.
- the internal pressure of the air ducts 41A and 41B is maintained at 300 Pa or more, preferably 500 Pa.
- the high pressure is set in this way in order to minimize the width W of the air ducts 41A and 1B.
- Nozzles 42 A, 43 A and 43 B arranged vertically symmetrically around the glass plate G,
- the air supplied to the air ducts 41A and 41B is desirably dry air.
- Moist air contains water vapor, which absorbs and attenuates microwaves. Therefore, it is desirable to use dry air with a dew point of 20 ° C or less, preferably 5 ° C or less.
- FIG. 6 shows that the front nozzle 42B and the rear nozzle 43B are arranged in a staggered manner. Thereby, the glass plate can be uniformly cooled.
- FIG. 7 shows a microwave irradiation path in the rapid cooling enhancement device of the present invention.
- the air ducts 41A and 41B are made of stainless steel and mirror-finished to make the outer surface a reflective surface. As a result, a part of the microwave reaches the glass plate G after hitting the air ducts 41A and 41B.
- the gaps 44, 44 having a width substantially equal to the width W of the air ducts 41A, 41B (see FIG. 5) are formed between the air ducts 41A, 41A and between 41B, 41B.
- the microwaves 46 and 46 reach the glass plate G.
- the outer surfaces of the air ducts 41A and 41B as reflecting surfaces, the amount of the microwaves 46 reaching the glass plate G increases.
- FIG. 8A and 8B show a microwave irradiation mode
- FIG. 8A shows a directional microwave 46 irradiation mode
- FIG. 8B shows a scattering irradiation mode.
- the microwave 46 can uniformly irradiate the surface of the glass plate G.
- This embodiment aims at uniform and scattered irradiation.
- multiple reflection in the chamber is effective, and the diffuse reflection surface works more effectively.
- FIG. 9 shows an example of the irregular reflection surface. Multiple on the inner surface of chamber one 23, 24 By providing the hemispherical mirror 47 of the present invention, a diffuse reflection surface can be obtained.
- the microwaves are irregularly reflected by the irregular reflection surface, the microwaves are reflected multiple times within the chamber, so that the chambers 23, 24 do not necessarily need to be dome-shaped or spherical, and even if they are box-shaped. Good.
- the microwave irradiated in the order of the waveguide-reflector-> reflection surface ⁇ the glass plate and the microphone mouth wave irradiated in the order of the waveguide-reflector-> diffuse reflection surface-the glass plate was explained.
- FIG. 10 shows another embodiment when irradiating microwaves, and shows an example in which an oscillating mirror and a converging microwave are combined.
- the converging microwave 48 is a beam obtained by converging a microwave generated by an electromagnetic wave generator by a reflection converging system composed of quasi-optical reflecting mirrors.
- the glass plate G is heated in a streak shape by reflecting the convergent microwave 48 on the oscillating mirror 49 provided in the chamber.
- 0 is the swing angle of the swing mirror 49. Since the swing angle 0 can be arbitrarily changed, for example, it is possible to easily cope with a change in the width of the glass plate G. Since the energy density of the focused microwave 48 is much higher, if the swing speed is changed, for example, so that the central part of the glass sheet G is slow and the peripheral part is fast, the central part is more likely to be different from other parts. Can also be heated strongly.
- the converging microwave can be replaced with a strip beam by using a curved mirror. This can also be achieved by replacing the oscillating mirror in FIG. 10 with a fixed curved mirror. Then, the glass plate can be heated by the band-shaped focused microwave.
- the use of convergent microwaves eliminates the need for a reflector and does not require the chamber to have a dome shape, thereby simplifying the structure of the quenching enhancement device.
- the chamber 1 is formed into a dome shape or the inner surface of the chamber 1 is used for the purpose of reflecting the converging microwave reflected on the glass plate again and facing the glass plate. It is effective to use a diffuse reflection surface.
- FIG. 11 shows another embodiment of the chamber.
- the chamber shown in Fig. 2 23 and 24 may be a regular dodecahedron 51 or a polyhedron similar thereto as shown in FIG.
- the dome shape requires high processing cost, but if it is a polyhedron, the processing cost can be reduced because it is a combination of flat plates.
- the quenching strengthening device has been described with an example in which one chamber is provided above and below, but the effect can be exerted by using only the upper chamber or the lower chamber.
- the microwave As the microwave, a frequency of 18 GH2: to 30 OGHz is used. Below 18 GHz, an arc is generated in the metal parts that make up the casing. Above 300 GHz, microwave oscillators become special and extremely expensive. Therefore, the frequency of the scattered microwave is preferably in the range of 18 GHz to 3 OO GHz in order to suppress the cost of the apparatus while suppressing the occurrence of arc.
- the thickness of the glass plate is arbitrary, in the present embodiment, it is desirable to apply to a glass plate of 1.2 mm to 2.5 mm. If the thickness is less than 1.2 mm, the temperature difference between the center and the surface of the glass plate thickness is insufficient even by microwave irradiation, making the production of tempered glass difficult. 2. It is uneconomical in cost to rapidly strengthen a glass plate having a thickness exceeding 5 mm with the apparatus of this embodiment. Industrial applicability
- the method and apparatus of the present invention are useful for manufacturing not only tempered glass sheets for automobiles but also tempered glass sheets, high-strength tempered glass sheets, and high heat-resistant tempered glass sheets for industrial use.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/537,734 US20060026994A1 (en) | 2002-12-25 | 2003-11-21 | Method and device for reinforcing glass pane by rapid cooling |
AU2003284425A AU2003284425A1 (en) | 2002-12-25 | 2003-11-21 | Method and device for reinforcing glass pane by rapid cooling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-374890 | 2002-12-25 | ||
JP2002374890A JP2004203677A (ja) | 2002-12-25 | 2002-12-25 | ガラス板の急冷強化方法及び同装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004058652A1 true WO2004058652A1 (ja) | 2004-07-15 |
Family
ID=32677315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/014881 WO2004058652A1 (ja) | 2002-12-25 | 2003-11-21 | ガラス板の急冷強化方法及びその装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060026994A1 (ja) |
JP (1) | JP2004203677A (ja) |
CN (1) | CN1732133A (ja) |
AU (1) | AU2003284425A1 (ja) |
WO (1) | WO2004058652A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG175243A1 (en) * | 2009-04-08 | 2011-11-28 | Accelbeam Devices Llc | Microwave processing chamber |
KR20130024484A (ko) * | 2011-08-31 | 2013-03-08 | 삼성코닝정밀소재 주식회사 | 강화유리 제조방법 및 강화유리 제조장치 |
KR101290570B1 (ko) * | 2012-03-06 | 2013-07-31 | 삼성코닝정밀소재 주식회사 | 고주파 가열 장치 |
KR101402585B1 (ko) * | 2012-11-01 | 2014-06-02 | 코닝정밀소재 주식회사 | 글라스의 화학강화 장치 및 이를 이용한 화학강화 방법 |
US9108875B2 (en) * | 2013-05-30 | 2015-08-18 | Ppg Industries Ohio, Inc. | Heating and shaping system using microwave focused beam heating |
US10526232B2 (en) | 2013-05-30 | 2020-01-07 | Ppg Industries Ohio, Inc. | Microwave heating glass bending process |
BR112018002494A2 (pt) * | 2015-08-06 | 2018-09-18 | Ppg Ind Ohio Inc | método para formar uma lâmina de vidro e sistema |
JP2019513683A (ja) * | 2016-04-18 | 2019-05-30 | コーニング インコーポレイテッド | 選択的マイクロ波加熱および能動冷却を用いてガラス積層板を熱的に焼き戻す方法 |
CN107586013A (zh) * | 2017-07-26 | 2018-01-16 | 洛阳兰迪玻璃机器股份有限公司 | 一种薄钢化玻璃生产方法 |
CN112437759A (zh) * | 2018-07-16 | 2021-03-02 | 康宁股份有限公司 | 具有改善的翘曲的玻璃制品的陶瓷化方法 |
CA3129655C (en) | 2018-07-16 | 2023-01-03 | Corning Incorporated | Glass ceramic articles having improved properties and methods for making the same |
CN112512979B (zh) | 2018-07-16 | 2022-09-20 | 康宁股份有限公司 | 利用成核和生长密度以及粘度变化对玻璃进行陶瓷化的方法 |
CN115838242B (zh) * | 2022-11-03 | 2023-10-24 | 宿迁市新大江玻璃有限公司 | 一种异型玻璃钢化炉 |
Citations (5)
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JPH09112873A (ja) * | 1995-10-11 | 1997-05-02 | Mitsubishi Electric Corp | マイクロ波溶融装置 |
US5656053A (en) * | 1995-09-07 | 1997-08-12 | Ford Motor Company | Method for heating and forming a glass sheet |
JP2000290030A (ja) * | 1999-04-01 | 2000-10-17 | Nippon Sheet Glass Co Ltd | 強化ガラス製造装置 |
JP2001213631A (ja) * | 2000-01-28 | 2001-08-07 | Nippon Sheet Glass Co Ltd | 強化ガラス製造装置 |
JP2003261344A (ja) * | 2002-03-08 | 2003-09-16 | Nippon Sheet Glass Co Ltd | 熱強化ガラス物品の製造方法、およびそれに用いる製造装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69608747T2 (de) * | 1995-09-07 | 2000-10-12 | Ford Motor Co | Verfahren zum Erhitzen, Formen und Härten einer Glasscheibe |
-
2002
- 2002-12-25 JP JP2002374890A patent/JP2004203677A/ja not_active Withdrawn
-
2003
- 2003-11-21 US US10/537,734 patent/US20060026994A1/en not_active Abandoned
- 2003-11-21 AU AU2003284425A patent/AU2003284425A1/en not_active Abandoned
- 2003-11-21 WO PCT/JP2003/014881 patent/WO2004058652A1/ja active Application Filing
- 2003-11-21 CN CNA2003801076436A patent/CN1732133A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5656053A (en) * | 1995-09-07 | 1997-08-12 | Ford Motor Company | Method for heating and forming a glass sheet |
JPH09112873A (ja) * | 1995-10-11 | 1997-05-02 | Mitsubishi Electric Corp | マイクロ波溶融装置 |
JP2000290030A (ja) * | 1999-04-01 | 2000-10-17 | Nippon Sheet Glass Co Ltd | 強化ガラス製造装置 |
JP2001213631A (ja) * | 2000-01-28 | 2001-08-07 | Nippon Sheet Glass Co Ltd | 強化ガラス製造装置 |
JP2003261344A (ja) * | 2002-03-08 | 2003-09-16 | Nippon Sheet Glass Co Ltd | 熱強化ガラス物品の製造方法、およびそれに用いる製造装置 |
Also Published As
Publication number | Publication date |
---|---|
US20060026994A1 (en) | 2006-02-09 |
AU2003284425A1 (en) | 2004-07-22 |
JP2004203677A (ja) | 2004-07-22 |
CN1732133A (zh) | 2006-02-08 |
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