WO2005077855A1

WO2005077855A1 - Method for manufacturing glass panel, and glass panel manufactured by the method

Info

Publication number: WO2005077855A1
Application number: PCT/JP2005/002517
Authority: WO
Inventors: Toru Futagami
Original assignee: Nippon Sheet Glass Company, Limited
Priority date: 2004-02-18
Filing date: 2005-02-10
Publication date: 2005-08-25
Also published as: JP2005231930A

Abstract

A method for manufacturing a glass panel, which comprises providing glass sheets (11, 12) having the same shape and the same size, cleaning a pair of sheet glasses (11, 12) by the use of a cleaning fluid containing a polishing material comprising fine particles, for example, containing cerium oxide as a primary component, and then, sealing a pair of glass sheets (11, 12) by the use of a sealing material having a melting point of 250˚C or lower at the outer edges of the circumferences of a pair of glass sheets (11, 12) having been paired. The above method can reduce the production cost for a glass panel, and simultaneously can improve the quality of the glass panel.

Description

Description Glass panel manufacturing method, and glass panel manufactured by the manufacturing method

The present invention relates to a method for producing a glass panel, and a glass panel produced by the method, and particularly to a hollow formed by interposing a spacer between a pair of glass sheets. The present invention relates to a method for manufacturing a glass panel having a layer, and a glass panel manufactured by the method. Background art

Conventionally, a pair of opposed glass sheets, a hollow layer formed by interposing a plurality of columnar spacers between the pair of glass sheets, and a peripheral sealing material that seals the peripheral edge of the hollow layer; An exhaust pipe having one end embedded in a hole penetrating one of the pair of plate glasses and the other end sealed, and an accommodation hole arranged in the middle layer for accommodating a getter material for adsorbing various gas molecules in the hollow layer. A glass panel provided with is known. This glass panel has a function such as heat insulation when the hollow layer is depressurized to almost a vacuum.

A pair of plate glasses constituting a glass panel may adsorb various gas molecules on an inner main surface in contact with the hollow layer when constituting a glass panel. These adsorbed various gas molecules are excited by heat energy and the like received from the outside after the facing glass forms the glass nonel, and are scattered to the hollow layer, thereby deteriorating the degree of decompression of the hollow layer. Glass) May reduce the heat insulation of the gnole. In addition, this glass panel has a small amount of gas molecules that seal around the edges after prolonged use. Insulation may decrease due to the permeation of the material and the incorporation of gas molecules into the hollow layer. In order to solve such a problem, the following glass panel manufacturing method is used.

FIG. 6 is a flowchart showing a conventional method for manufacturing a glass panel.

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In FIG. 6, first, a pair of glass sheets having the same shape and the same size are prepared (Step S61), and one of the four corners is placed on one of the pair of glass sheets. Drill a through hole in the vicinity (Step S6

2) 溝 A groove-shaped accommodation hole is formed in the other of the pair of plate glasses at a position facing the through hole (step S63).

Next, the plate glass with the holes was supported almost horizontally, spacers were arranged at predetermined intervals, and the evaporative gas was stored in the holes (step).

After S64), a plate glass having a through hole formed thereon is placed on the plate glass to perform pairing of a pair of plate glasses (step S65), and further, an exhaust pipe is formed in the through hole. Insert a tubular M tube to form

Next, the paired pair of glass sheets 11 and 12 are housed in a heating furnace to heat the entire pair of glass sheets (step S66), and ■ firing by inn wind circulation or the like. The peripheral sealing material is melted, and the outer peripheral edges of the pair of plate glasses are sealed with the melted peripheral sealing material (Step S67) o Next, in order to reduce the pressure of the hollow layer, While heating to about 150 ° C, the gas molecules in the hollow layer should be exhausted to the outside (step S688). Next, the outside air side end of the communication pipe is heated to a high temperature, and the outside air side end of the communication pipe is melted and sealed to form an exhaust pipe (step S69).

Further, by heating the evaporative gas housed in the housing hole, The gate material is flushed (step S70), and the getter material is vapor-deposited on the inner main surface of the plate glass in which the through holes are formed, and the process is completed.

According to this method of manufacturing a glass panel, the entire pair of glass sheets is heated, and baking is performed to discharge gas molecules in the hollow layer to the outside so as to reduce the pressure in the hollow layer. It can actively decompose or scatter various gas molecules, organic components, and other contaminants adsorbed on the surface, and discharge it together with the middle layer of air.Furthermore, the peripheral edge material melted by high-temperature heat treatment By sealing the outer peripheral edges of the pair of glass sheets, the hollow layer can be shielded from gas molecules such as moisture and oxygen from the outside (see, for example, JP 0 2-1 8 7 7 4 5).

However, when depressurizing the hollow layer, a heating device for heating the entire pair of glass sheets is required, so that a space for disposing the heating device is required, equipment costs are increased, and the production cost of the glass panel is increased. There is a problem with the increase in In addition, when the entire pair of glass sheets is heated, it is difficult to make the entire internal space of the heating device have a uniform temperature distribution. There is a problem that the quality of the glass panel deteriorates due to the warpage of the glass panel due to the difference in thermal expansion. Furthermore, when high performance glass to which a film having performances such as heat ray reflection, line absorption, and low emissivity is used is used, there is a problem that the film performance is deteriorated by heating.

An object of the present invention is to provide a glass panel manufacturing method capable of reducing the manufacturing cost of a glass panel and improving the quality of the glass panel, and a glass panel manufactured by the manufacturing method. To provide

Disclosure of the invention In order to achieve the above object, according to a first aspect of the present invention, there is provided a pair of sheet glasses facing each other, each having an outer peripheral edge, and a glass layer is interposed between the sheet glasses to form a hollow layer. A method of manufacturing a glass panel having at least one spacer, wherein the outer peripheral edge portion is sealed, and the hollow layer is depressurized, and wherein a main surface of the pair of plate glasses is provided. A cleaning step of cleaning at least one side and a sealing material having a melting temperature of 250 ° C. or less at the outer peripheral edge of the pair of glass sheets. A method for producing a glass panel, comprising: a sealing step for sealing a glass.

,

In the first embodiment, the cleaning step comprises at least one selected from the group consisting of a liquid cleaning method, a super cleaning method, a UV cleaning method, an ozone cleaning method, and a plasma cleaning method. It is preferable to use a method to wash a pair of glass sheets, 0

In one embodiment, the cleaning liquid used in the liquid cleaning method preferably contains an alkaline detergent or ozone water.

In Nohgura, the cleaning liquid preferably contains an abrasive o

In one embodiment, the abrasive is preferably fine particles mainly composed of cerium oxide.

In the first embodiment, the sealing material is preferably made of solder or resin.

In the first embodiment, a perforation step for perforating an adsorbent accommodating hole for accommodating an adsorbent for adsorbing a molecule in the hollow layer is provided in one of the sealing steps. It is preferable that the apparatus further comprises a storage space for storing the adsorbent in the adsorbent storage hole.

In the first aspect, the pressure of the hollow layer is increased after the sealing step. The cleaning step, the sealing step, and the depressurizing step each further include a depressurizing step for depressurizing, and each of the cleaning step, the sealing step, and the depressurizing step is performed in a space in which the state of contamination of air can be controlled chemically or physically. It is preferable to be done.

According to a second aspect of the present invention, there is provided a glass panel manufactured by the method for manufacturing a glass panel according to the first aspect of the present invention. Brief Description of Drawings

FIG. 1A is a perspective view showing a schematic configuration of a guff spa according to an embodiment of the present invention. FIG. 1B is a cross-sectional view taken along line 1 B 1 B in FIG. 1A.

FIG. 2 is a partial cross-sectional view showing a schematic configuration of the accommodation hole and its vicinity in the glass panel of FIG.

FIG. 3 is a flowchart showing a method of manufacturing the glass panel of FIG.

FIG. 4 is a diagram illustrating the sealing step in FIG.

FIG. 5A is a partial cross-sectional view of the pair of plate glasses in FIG. 1A at the time of evacuation and formation of the exhaust pipe, and FIG. 5B is a partial cross-sectional view of the pair of plate glasses after the exhaust pipe is formed. It is.

FIG. 6 is a flow chart showing a conventional method for manufacturing a glass panel.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A is a perspective view showing a schematic configuration of a glass panel according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line 1B-1B in FIG. 1A. O

In FIG. 1, a glass panel 10 is a pair of opposing glass sheets 11

1 and a plurality of columnar spacers 15 interposed to form a hollow layer 13 between the pair of plate glasses 11 1 and 12, and a hollow layer 13 of the plate glasses 11 and 12. A peripheral sealing material 14 (sealing material) for sealing the peripheral portion, and an exhaust pipe 17 having one end embedded in a through hole 16 penetrating the plate glass 11 and the other end sealed. An adsorbent-accommodating hole 18 that is disposed in the hollow layer and accommodates an evaporative gas-gas 70 (adsorbent) that adsorbs gas molecules in the hollow layer is formed in the sheet glass 12.

The two glass sheets 111 are transparent float glass having a thickness of about 2.6 to 3.2 mm, and the hollow layer 13 has a thickness of 1.33 Pa (1.0 mm).

X 1 0 - ² T orr) is depressurized below. The pressure in the hollow layer 13 is reduced by discharging the air inside the hollow layer 13 through the through hole 16 and the exhaust pipe 17, and the exhaust pipe 17 maintains the reduced pressure state of the hollow layer 13. The other end is sealed by melting.

The spacer 15 has a cylindrical shape, a diameter of about 0.31 • 0 mm, a height of about 0.151.0 mm, and an atmospheric pressure acting on the sheet glass 1 1 1 2. due material not buckling be loaded with compressive stress, for example, the compressive strength is ^{4. 9 X 1 0 8 P} a (5 X 1 0 3 kgf / cm 2) on the following materials, and rather the preferred And stainless steel (SUS304).

FIG. 2 is a partial cross-sectional view showing a schematic configuration near the accommodation hole 18 in the glass panel 10 of FIG.

In FIG. 2, the accommodating hole 1 $ is formed in the sheet glass 12 as an annular groove at a position facing the page through hole 16. The mold ring 70 accommodated in the accommodation hole 18 is a stainless steel ring having a thickness of 0.1 mm. It has a container 72 and a gutter member 71 contained in an annular container 72 and having a thickness of 0.45 mm.

FIG. 3 is a flow chart showing a method of manufacturing the glass panel 10 of FIG. 1.

First, two glass base plates (not shown) made of float glass and having a predetermined thickness are cut into predetermined dimensions, for example, 1200 mm x 900 mm, and have the same shape and the same shape. Prepare glass sheets 11 and 12 of the size (step S31), and insert through holes 16 in the vicinity of any one of the four corners of the glass sheet 11 with a drill or the like. (Step S32) (drilling step), and a groove-shaped accommodation hole 18 is drilled in the sheet glass 12 at a position facing the through hole 16 with a drill or the like. (Step S 3

3) o

Next, in a space where the state of air contamination, such as a clean room or a chemical clean room, can be controlled chemically or physically, a pair of glass plates 11 and 12 are formed using a liquid cleaning method. Wash (step S34) (washing step). The cleaning liquid used in this liquid cleaning method contains, for example, an alkaline detergent or ozone water. The cleaning liquid contains an abrasive. As the abrasive, for example, fine particles mainly containing cerium oxide are used.

Next, the plate glass 12 was supported almost horizontally, spacers 15 were arranged at predetermined intervals, and the evaporable getter 70 was accommodated in the accommodation hole 18 (step S3). 5) After the (accommodation step), the glass sheet 11 is placed on the glass sheet 12 from above, and the glass sheets 11 and 12 are paired (step S36), and the glass penetrates. At the hole 16, a communication pipe 17 a, which forms the exhaust pipe 17, is inserted.

In addition, the pair of paired glass sheets 11 and 12 are placed almost horizontally. Using a solder that maintains the melting temperature at 250 ° C or less, seal the outer peripheral edges of the pair of plate guffs 11 and 12 (step S37) (sealing step). B). As the solder, for example, solder a having a composition of 91.2 Sn-8.8 Zη (± not crystal temperature: ί98 ° C.) is used.

FIG. 4 is a diagram illustrating the sealing step in FIG.

In FIG. 4, the sealing device A has a stepped platen 52 formed in a stepped shape having a high portion and a low portion lower than the high portion, and a mounting hole 5 at the high portion.

0 and a pair of plate glasses 11 and 12 and a supply tower 51 for supplying solder a to the pair of plate glasses 11 and 12 at the lower end. At the bottom of the panel 52, two rail members 53 are arranged along the pair of plate glasses 11 and 12. The supply tower 51 is a rail member.

It is mounted on a moving mechanism 54 running on 53.

The supply tower 51 has a crucible part 55 having a rectangular cross section for storing the liquid or solid phase solder a, a crucible part built in the side wall part of the crucible part 55 and a crucible part.

5 An electric heater 5 6 for heating the solder a stored in 5 and a crucible part

An introduction section 58 having a long cross section that communicates with the bottom of 55 and opens toward the outer peripheral edge of the pair of glass sheets 11 and 12, and is arranged horizontally at the middle of the introduction section 58 An introduction plate 59 is provided. The introduction plate 59 extends from the introduction portion 58 and fits on the outer peripheral edge of the pair of glass plates 11 and 12, whereby the solder a is combined with its surface tension. Into the gap 57. In addition, the gravity of the nozzle a at the liquid level ΔH in the loop portion 5 5

At the portion 9, the voltage is applied to a and a, thereby forming a pair of glass sheets.

It promotes the penetration of solder a into the outer peripheral edge of 1 1 and 1 2.

The movement mechanism.54 moves at a constant speed on the rail member 53 along the outer peripheral edge of the pair of plate glasses 11 and 12, so that the binder a becomes the introduction plate 59. Through the entire periphery of the pair of plate glasses 11 and 12 Then, a perimeter sealing material 14 that seals the perimeter of the hollow layer 13 formed between the pair of plate glasses 11 15 12 is formed.

In the following step S38, as shown in FIG. 5A, an exhaust force pipe 61 is provided near the communication pipe 17a so as to cover the communication pipe 17a so as to cover the communication pipe 17a. The hollow layer 1 is attached to the main surface and suctioned by a low-pressure pump or turbo-molecular pump (not shown) connected to the exhaust cap 61.

The pressure in Step 3 is reduced to 1.33 Pa or less. A vacuum is drawn to discharge the gas molecules in the hollow layer 13 to the outside (Step S38) (Step in decompression). Next, a voltage is applied to a heat source 62 such as a light source attached to the exhaust power 61 to heat the outside air end of the communication pipe 17a to a high tnn.

The exhaust pipe 17 is formed by melting and sealing the end of the outside air side of 7a (step S39) (FIG. 5B). As a result, a pair of glass sheets 11 1,

The hollow layer 13 formed between the two plates 12 is sealed. Ο In addition, in each of the above-described steps, the main surfaces of the pair of plate glasses 11 and 12 are washed (step S 3 4). ) To vacuuming to discharge the gas molecules in the hollow layer 13 to the outside (step S38), respectively, the space in which the state of air pollution can be controlled chemically or physically. Will be implemented within.

Next, the evaporable getter 70 housed in the housing hole 18 is locally heated using a high-frequency device (not shown), and the state of about 100 ° C. is maintained for about 15 seconds. Thus, the glass evening material 71 is flashed (step S40), and the glass evening material 71 is vapor-deposited on the inner main surface of the sheet glass '11. Getter material 7 adhered to the main surface of Itaga lath 1 1 of the inner surface 1 is in contact with the scattered various vapor molecules, the gas molecules or et consisting of _{water, CO, C 0 2, N} 2, H 2 , 0 _2, etc. of the gas is removed by suction, and the process ends.

According to the present embodiment, the main surfaces of the pair of plate glasses 11 and 12 are cleaned, and the melting temperature at the outer peripheral edges of the pair of plate glasses 11 and 12 is 250 ° C. or lower. Since the pair of plate glasses 11 and 12 are sealed using the lower solder, generation of gas molecules from the main surfaces of the pair of plate glasses 11 and 12 can be suppressed. Further, since it is not necessary to heat the entire pair of plate glasses 11 and 12 with a heating device or the like, deformation of the pair of plate glasses 11 and 12 is suppressed. Thus, the manufacturing cost of the glass panel 10 can be reduced, and the quality of the glass panel 10 can be improved. Also, since it is not necessary to heat the entire pair of plate glass 11, 12, at least one of the pair of plate glass 11, 12, for example, heat ray reflection, heat ray absorption, Even when high-performance glass to which a film having performance such as low emissivity is attached is used, the glass panel 10 can be manufactured without deteriorating these performances.

According to the present embodiment, since the pair of plate glasses 11 and 12 are cleaned by using the liquid cleaning method, gas molecules that can be decomposed or scattered from the main surfaces of the pair of plate glasses 11 and 12 are cleaned. Generation can be further suppressed, so that the initial performance of the glass panel 10 can be exhibited over a long period of time.

According to the present embodiment, since the cleaning liquid used in the liquid cleaning method contains an alkaline detergent or ozone water, the initial performance of the glass panel 10 can be exhibited for a longer time.

According to the present embodiment, since the cleaning liquid contains the abrasive, the main surfaces of the pair of glass plates 11 and 12 can be physically polished, and thus the initial performance of the glass panel 10 can be improved. Can be exerted over a longer period of time.

According to the present embodiment, since the abrasive is fine particles mainly composed of cerium oxide, the main surfaces of the pair of plate glasses 11 and 12 can be chemically and physically polished. Therefore, the initial performance of the glass panel 10 can be exhibited for a longer time.

According to the present embodiment, the outer peripheral edges of the pair of plate glasses 11 and 12 are sealed. Before stopping (step S37), an adsorbent accommodating hole 18 for accommodating the mold 70 for adsorbing gas molecules in the hollow layer 13 is formed (step S37).

3) Store the evaporator 70 in the adsorbent storage hole 18 (Step S

Since 35), the gas molecules scattered in the hollow layer 13 can be adsorbed, and the degree of decompression of the hollow layer 13 can be maintained for a long time. Even if the pair of plate glasses 11 and 12 is not sufficiently washed, the d-form molecules can be adsorbed, and the degree of vacuum in the hollow layer 13 can be maintained for a long time.

According to the present embodiment, the main surfaces of the pair of plate glasses 1 1 1 2 are cleaned.

(Step S34), the evaporable getter 70 is accommodated in the accommodating hole 18 (Step S35), and the pair of plate glasses 11 and 12 is paired to form a pair of plate glass 11 , 12 are sealed (step S37), and a vacuum is applied to discharge the gas molecules in the hollow layer 13 to the outside (step S3).

8) Each of these steps is performed in a space where the state of air pollution can be controlled chemically or physically, so a pair of cleaned glass sheets 1

1, 12 can be prevented from being re-contaminated, and the life of the glass panel 10 can be prolonged.

In the present embodiment, the pair of glass plates 11 and 12 are cleaned using the liquid cleaning method, but the present invention is not limited to this, and the ultrasonic cleaning method, the UV cleaning method, the ozone cleaning method, and the plasma cleaning method may be used. A pair of glass sheets may be cleaned using at least one of the cleaning methods. As a result, generation of gas molecules that can be decomposed or scattered from the main surfaces of the pair of plate glasses 1 1 1 2 can be suppressed, and thus the initial performance of the glass panel 10 can be exhibited for a long time. can do.

In the present embodiment, a solder having a melting temperature of 250 ° C. or less, for example,

9 1.2 Sn-8.8 Zn (eutectic point temperature: 198 V) The outer peripheral edges of the pair of plate glasses 11,, 12 are sealed with solder a, but not limited to these, and Sn, Cu ヽ In, Bi, zn, Pb, sb A metal material containing at least one material selected from the group consisting of, G a, and Ag and having a melting temperature of 250 ° C or less or a resin which solidifies at room temperature. A pair of glass sheets 1 1, 1

The outer peripheral edge of the second may be sealed.

Further, the metal material may include at least one material selected from the group consisting of Ti, A 1, and Cr. As a result, it is possible to improve the adhesiveness between the peripheral sealing material 14 and the glass components of the pair of plate glasses 1 1 1 2.

Further, it is preferable that the above-mentioned metal material is substantially composed of In and Sn and has a liquidus temperature of 150 ° C. or lower. As a result, the adhesion between the D 基板 substrate 10 and the metal material is further improved, and it is possible to realize sealing bonding at a low temperature.

Further, the metal material substantially consists of Iη and Sn, In / (In + Sn) is in the range of 50 to 65%, and the liquidus temperature is 1%. More preferably, it is below 25 ° C. As a result, the adhesiveness between the substrate 10 and the metal material is further improved, and the microstructure after solidification is fine and rich in flexibility, has excellent mechanical properties, and achieves sealing joining at a lower temperature. You can do it.

The metal material substantially consists of I n, S n, z n, τ i, and I n

/ (I n + S n) weight distribution ratio is in the range of 50 to 65%, and Z n is

0.1 to 7.0%, TO.000 1 to 0 • 1%, and the liquidus temperature is preferably 150 ° C or less, and the Zn is preferably 0. 1-5.0%,

More preferably, T i is 0.001 to 0.05% and the liquidus temperature is 125 ° C. or less. As a result, the substrate 10 and the metal material Adhesion is further improved, and coexistence of Ti and Zn

T i can be contained more uniformly, and the weather resistance at the interface between the substrate 10 and the metal material can be improved.

In the present embodiment, a vacuum is drawn to discharge the gas molecules in the hollow layer 13 to the outside, and the outside air side end of the communication pipe 17a is melted, melted and sealed off, so that the exhaust pipe 1 7 is formed, but the invention is not limited to this.After vacuuming, a predetermined gas is filled in the hollow layer 13, and then the outside air end of the communication pipe 17 a is melted and sealed. The exhaust pipe 17 may be formed by cutting.

In the present embodiment, the pressure of the hollow layer 13 is reduced to 1.33 Pa or less. However, the pressure is not limited to this, and the pressure of the hollow layer 13 may be reduced to almost a vacuum. Good. Thereby, the heat insulation performance of the glass panel 10 can be further enhanced.

In the present embodiment, the main surfaces of the pair of plate glasses 11 and 12 are cleaned, the evaporating type glass 70 is accommodated in the storage hole 18, and the pair of plate glasses 11 and 12 is paired. Is performed, the outer peripheral edges of the pair of plate glasses 11 and 12 are sealed, and a vacuum is evacuated to discharge the gas molecules in the hollow layer 13 to the outside. This is performed within a period that can be controlled chemically or physically, but is not limited to this. At least the main surfaces of the pair of plate glasses 11 and 12 are cleaned before the hollow layer 1 is cleaned. Each step up to the evacuation to discharge the gas molecules to the outside in Step 3 should be performed in a space where the air pollution state can be controlled chemically or physically. This can further prevent the pair of washed plate glasses 11 and 12 from being recontaminated.

Glass panels 10 are used for various purposes such as windows of buildings, automobiles, ships, etc., and various doors and walls of refrigerators and heat insulators. can do.

In the present embodiment, the pair of glass sheets 11, 1, 1 and 2 are flat glass. However, the present invention is not limited to this. For example, in accordance with the above-mentioned application, for example, , Glass with light diffusion function by surface treatment, netted glass, wire-coated glass, tempered glass, double-strengthened glass ヽ low reflection glass, high transmission glass, ceramic glass, heat ray Various types of glass, such as a special glass having a UV absorption function or a combination thereof, can be appropriately selected and used.

Further, the composition of the pair of plate glasses 11 and 12 may be selected from soda silicate glass, soda lime glass, borosilicate glass, aluminosilicate glass, and various types of crystallized glass. . Also twin sheet glass

The thicknesses of 1 1 and 1 2 are also freely selectable.

In the present embodiment, spacer 15 is formed of stainless steel, but is not limited to this. For example, inconel iron, aluminum, tungsten, nickel, chromium , Titanium and other metals, carbon steel, chrome steel, nickel steel, nickel chrome steel, manganese steel ヽ chrome mangan steel, chrome molybdenum steel, silicon steel, brass, solder, jyuraremin, etc. It may be formed of an alloy or a material having high rigidity such as ceramic or glass. Further, the spacer 15 is not limited to a columnar shape, and may be various shapes such as a polygonal shape and a spherical shape.

In the present embodiment, the evaporable getter 70 for absorbing gas molecules in the hollow layer 13 is used. However, the present invention is not limited to this. A non-evaporable getter that adsorbs and removes gas molecules may be used, a non-evaporable getter and an evaporative getter may be used in combination, and a getter (adsorbent) may be used. The number of the adsorbent holes may be two or more, and the getter (adsorbent) may not be used. In the present embodiment, the peripheral sealing material 1 ′ 4 is formed by using the welding device A, but is not limited to this, and may be a friction bonding method, an anodic bonding method, an ultrasonic bonding method, a multi-step bonding. It may be formed by using any one of a bonding method and a pressure bonding method. As a result, it is possible to improve the adhesion of the circumferential sealing material 14 to the pair of plate glasses 11 and 12.

Industrial applicability

According to the method for manufacturing a glass panel of the present invention, at least one of the main surfaces of the pair of plate glasses is washed, and a sealing material having a solubility of 250 ° C. or less at the outer peripheral edges of the pair of plate glasses is used. Since the pair of glass sheets is sealed by the heat treatment, generation of gas molecules from the main surfaces of the pair of glass sheets can be suppressed, and the entire pair of glass sheets does not need to be heated by a heating device or the like. By suppressing the deformation of the glass sheet, the cost of manufacturing the glass panel can be reduced, and the quality of the glass panel can be improved.

According to the method for manufacturing a glass panel of the present invention, at least one method selected from the group consisting of a liquid cleaning method, an ultrasonic cleaning method, a UV cleaning method, an ozone cleaning method, and a plasma cleaning method is used. Since the pair of glass sheets is cleaned, generation of gas molecules that can be decomposed or scattered from the main surfaces of the pair of glass sheets can be further suppressed, and thus the initial performance of the glass glass can be exhibited for a long time. can do.

Glass panel cleaning liquid that is used in the liquid cleaning method according to the manufacturing method of the present invention, because it contains Al force re detergent or Ozon water is exerted healed more prolonged the initial performance of Garasuno ^1?, Channel be able to.

According to the method for manufacturing a glass panel of the present invention, the cleaning liquid contains the abrasive, so that the main surfaces of the pair of plate glasses can be physically polished. The initial performance of the glass panel can be exhibited for a longer time. According to the method for manufacturing a glass panel of the present invention, since the abrasive is fine particles mainly composed of ceramic oxide, the main surfaces of the pair of plate glasses can be chemically and physically polished. The initial performance of the glass tunnel can be exhibited for a longer time.

According to the method for manufacturing a glass panel of the present invention, before the sealing step, an adsorbent accommodation hole for accommodating an adsorbent for adsorbing gas molecules in the middle layer is formed, and the adsorbent is accommodated in the adsorbent accommodation hole. Gas molecules scattered in the hollow layer can be adsorbed, and the degree of decompression of the hollow layer can be maintained for a long time.

According to the method of manufacturing a glass panel of the present invention, the method further includes a decompression step for reducing the pressure of the interlayer after the sealing step, wherein the cleaning step, the sealing step, and the decompression step Each of them is performed in a space where the state of air pollution can be controlled chemically or physically, so that a pair of washed glass sheets can be prevented from being re-contaminated, so that the life of the glass panel can be reduced. Can be extended.

Claims

The scope of the claims

1. A pair of sheet glass facing each other having an outer peripheral edge, and at least one spacer interposed between the sheet glass to form a hollow layer, A method for manufacturing a glass panel in which a hollow portion is sealed and the pressure of the hollow layer is reduced.

A cleaning step of cleaning at least one of the main surfaces of the pair of plate glasses;

lu A sealing step for sealing the pair of plate glasses using a sealing material having a solubility of 250 ° C. or less at the outer periphery of the pair of plate glasses. Panel manufacturing method.

2. The cleaning step is performed using at least one method selected from the group consisting of a liquid cleaning method, an ultrasonic cleaning method, a UV cleaning method, an ozone cleaning method, and a plasma cleaning method. 2. The method for producing a glass panel according to claim 1, wherein the glass panel is washed.

3. The method according to claim 2, wherein the cleaning liquid used in the liquid cleaning method contains an alkaline detergent or on ice.

4. The method for manufacturing a glass panel according to claim 3, wherein the cleaning liquid contains an abrasive.

5. The method for manufacturing a glass panel according to claim 4, wherein the abrasive is fine particles containing cerium oxide as a main component.

6. The method for manufacturing a glass panel according to claim 1, wherein the sealing material is made of solder.

7. The method for manufacturing a glass panel according to claim 1, wherein the sealing material is made of a resin. 8 • At the end of the sealing step, a perforation step for perforating an adsorbent containing hole for accommodating an adsorbent for adsorbing gas molecules in the hollow layer and an adsorbent for IJ 4. The method for producing a glass panel according to claim 1, further comprising: a housing step for housing in the adsorbent housing hole.

9 • After the sealing step, a reduction step is also provided to reduce the pressure in the iJBO hollow layer.

The cleaning step, the HUS3 sealing step, and the decompression step are each performed in a space where the contamination state of the air can be controlled chemically or physically. Method for producing glass nonel described in paragraph 1

A glass panel manufactured by the method for manufacturing a glass panel according to claim 1, wherein the glass panel has a range of 10 m.