JPH11314944A - Production of glass panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means which facilitates production and consequently improves productivity and is capable of preventing the damage to a glass panel in a process for producing the glass panel by disposing plural spacers between plural glass sheets 1 and integrating the glass sheets 1 formed with a gap 4 therebetween by end-sealing the circumference 3. SOLUTION: A spacer forming paste capable of forming the spacers 5 is previously prepd. The spacer forming paste is formed to a prescribed shape and arranged in the prescribed positions on a spacer arrangement surface 2A on the gap 4 side of the one glass sheet 1A. These pastes are then subjected to a prescribed solidification treatment to form plural spacer performing materials. The contact ends 6 of the plural spacer performing materials are respectively shaped to the prescribed height with the spacer arrangement surface 2A and are thereby formed as the spacers 5. The surface 2 on the gap 4 side of the other glass sheet 1 is disposed to face the contact ends 6 after the shaping, by which the glass sheet is integrated to the one glass sheet 1A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a glass panel for improving heat insulating properties, and more particularly, to a method for manufacturing a glass panel in which a plurality of spacers are provided between a plurality of glass plates and a gap is formed between the glass plates. The present invention relates to a method for manufacturing a glass panel in which the periphery is sealed and integrated.

[0002]

2. Description of the Related Art Conventionally, as a double-pane glass as a glass panel, for example, as shown in FIG. 14, a columnar glass previously formed in a spacer shape at a predetermined position on a spacer arrangement surface 2A of one glass plate 1A. A plurality of spacers 5 are arranged, and the other glass plate 1B is covered thereover (see FIG. 2A), and the surroundings 3 are made of a sealing material S made of low melting point glass.
(See (b) in the figure).

[0003]

By the way, in the above-mentioned conventional method for manufacturing a double glazing, one glass plate 1A is used.
Just placing the spacer 5 on the other glass plate 1
If the plurality of spacers 5 are not fixed at the time of stacking B, the two glass plates 1
The work of superimposing A and 1B is troublesome, and thus the productivity is low. Therefore, it is conceivable to bond the spacers 5 to the one glass plate 1A, but it is not easy to bond a large number of fine pieces. On the contrary,
For example, as shown in FIG. 12, a paste 11 for forming a spacer formed by kneading a frit of a low-melting glass and a binder at predetermined positions on both glass plates 1A and 1B as a paste molded body 10 having a predetermined size and shape. After adhering (see (a) in the same figure), the front end portions of these paste molded bodies 10 are brought into contact with each other (see (b) in the same figure), and then fired, and both are integrated as spacers 5, and the spacers 5 are combined. Both glass plates 1
It is proposed to adhere to each of A and 1B (see FIG. 3C) (for example, European Patent No. 47725).
However, in order to realize this proposal, it is necessary to precisely align the fine paste molded bodies 10 on the surface 2 on the gap 4 side of the glass plates 1A and 1B at opposing positions. That is, for example, if the relative positions are shifted as shown in FIG. 13A, the paste moldings 10 are brought into contact with each other in a state where there is a discrepancy as shown in FIG. As a result, a spacer 5 having a stagger in the middle as shown in FIG. When such a discrepancy occurs, the spacer 5
However, there is a risk of breakage during use at the position of the difference. Further, if the positions of the paste molded bodies 10 on both sides are extremely displaced, it is expected that the spacers 5 adhered to the glass plates 1 will not be joined together and will not function as spacers. Therefore, since the alignment must be performed very carefully, a strict alignment is required when the two glass plates 1A and 1B are combined, and there is a problem that the operation is not easy. Further, since the relative positions of the two glass plates 1A and 1B after being integrated are completely restrained by the spacer 5, deformation such as bending of the double glass by an external force acting on the double glass such as wind pressure. When this occurs, a relative displacement occurs between the two glass plates 1A and 1B, which may cause a crack in the spacer 5 or damage the glass plate 1.

[0004] Therefore, the method for manufacturing a glass panel according to the present invention is easy to manufacture and therefore excellent in productivity, and
Another object of the present invention is to provide a means for preventing damage to a glass panel.

[0005]

[Means for Solving the Problems] The feature of the method for manufacturing a glass panel according to the present invention according to claim 1 is that a paste for forming a spacer capable of forming a spacer is prepared in advance. After the spacer forming paste is formed and arranged in a predetermined shape on the space side of one of the glass plates, that is, on the spacer arrangement surface, each of the spacer forming pastes is subjected to a predetermined solidification treatment, A plurality of spacer preforms are formed, and the contact end portions of the plurality of spacer preforms after the solidification treatment that can be brought into contact with the other glass plate have a predetermined height with respect to the spacer arrangement surface, respectively. At the point where the surface on the gap side of the other glass plate is integrated with the one glass plate by opposing the contact end after the height shaping. There is (first characteristic configuration).

The characteristic structure of the glass panel manufacturing method according to the present invention according to claim 2 will be described with reference to, for example, an example shown in FIG. 6 is formed by forming a convex portion 7 and a concave portion 8 on the contact end portion 6 (second characteristic configuration).

The characteristic structure of the glass panel manufacturing method according to the third aspect of the present invention will be described with reference to the examples shown in FIGS. 1 and 2. A spacer forming paste 11 capable of forming a spacer 5 is prepared in advance. After the spacer forming paste 11 is formed and arranged in a predetermined shape on the surface 2 of the glass plate 1A on the gap 4 side, that is, the spacer arrangement surface 2A (see FIG. 1 (c)), the spacer forming paste 11 is formed. Paste 11
Each of them is subjected to a predetermined semi-solidification treatment to form a plurality of semi-solidified spacer preforms 9 (see FIG. 4D), and the other glass plate 1B of the plurality of spacer preforms 9 is formed. The contacting end portions 6 that can contact with each other are adjusted and shaped to a predetermined height with respect to the spacer arrangement surface 2A (FIG. 1).
(E), the spacer preform 9 after the height adjustment
Each is subjected to a predetermined solidification treatment to form a spacer 5,
The surface 2 of the other glass plate 1B on the side of the gap 4 is opposed to the contact end 6 after the shaping (see FIG. 2 (f)) and integrated with the one glass plate 1A ( Fig. 2 (g)
(See the third characteristic configuration).

The characteristic structure of the glass panel manufacturing method according to the present invention according to claim 4 will be described with reference to, for example, the example shown in FIG. 1. The softening point of the glass plate 1 in any one of the first to third characteristic structures described above. A binder is added to a low-melting glass having a lower fusion temperature than the binder, and the mixture is kneaded into the paste 11 for forming a spacer, and is fired together with one glass plate 1A at a predetermined firing temperature to form a plurality of spacer preforms 9. do it,
In a state where the plurality of spacer preforms 9 are held at a spacer preform softening temperature lower than the firing temperature,
The fourth embodiment is characterized in that the contact end portion 6 is press-shaped and the spacer 5 is leveled and shaped (fourth characteristic configuration). here,
The fusing temperature of the low-melting glass refers to a temperature at which the viscosity of the low-melting glass can be fluidized.
Refers to the fluidization temperature below ⁵ poise.

The characteristic structure of the glass panel manufacturing method according to the fifth aspect of the present invention will be described with reference to, for example, an example shown in FIG. 5A. The heat resistance is higher than the softening temperature of the spacer preform material in the fifth characteristic structure. The point is that particles of the convex portion forming material 12 having a temperature are added to the low melting point glass and kneaded into the spacer forming paste 11 (fifth characteristic configuration).

The feature of the glass panel manufacturing method according to the present invention according to claim 6 is shown in, for example, FIG. 1 when the contact end portion 6 in any one of the first to fourth feature configurations is adjusted in height. As described above, the contact end 6 is shaped into a smooth surface (sixth characteristic configuration).

The characteristic structure of the glass panel manufacturing method according to the present invention according to claim 7 is, for example, shown in FIGS.
As described with reference to (g), a spacer-forming paste 11 capable of forming the spacer 5 is prepared in advance, and the spacer-forming paste 11 is applied to one glass plate 1A.
After being formed and arranged in a predetermined shape at a plurality of locations on the spacer arrangement surface 2A which is the surface 2 on the side of the gap C, each of the contact end portions 6 which can be in contact with the other glass plate 1B after being formed on the spacer 5
Is adjusted to a predetermined height with respect to the spacer arrangement surface 2A (for example, rolling using a roller (not shown)), and a predetermined solidification is performed on each of the spacer forming pastes 11 after the alignment and shaping. The spacer 5 is formed by performing a process, and the surface 2 on the gap C side of the other glass plate 1B is opposed to the contact end 6 of each spacer 5 to be integrated with the one glass plate 1A. (See FIG. 2 (g)) (seventh characteristic configuration).

The characteristic structure of the glass panel manufacturing method according to the present invention according to claim 8 will be described with reference to the example shown in FIG. 3, in which the first or third to fifth or seventh characteristic structure is used. At the time of adjusting the height of the contact end portion 6, a convex portion 7 and a concave portion 8 are formed on the contact end portion 6, and the convex portion 7 is shaped so as to have the predetermined height (eighth). Features configuration).

[Function and Effect of Characteristic Configuration] According to the first characteristic configuration of the method for manufacturing a glass panel according to the present invention, it is possible to facilitate the manufacture and prevent the glass panel from being damaged. That is, since the spacer-forming paste is arranged on the spacer-arranged surface, which is the surface on the gap side of one of the glass plates, it is not necessary to strictly align the two glass plates when integrating them. This is because the spacers need only be appropriately distributed on the spacer arrangement surface. Further, the spacer-forming paste is formed as a spacer by a predetermined solidification treatment (for example, by firing when a glass paste using low-melting glass is used).
If this is adjusted to a predetermined height with respect to the spacer arrangement surface (for example, in the case of using the above glass paste, the contact end portion of the spacer preform is reheated after the baking treatment). When pressed under a softening temperature), when the other glass plate is sealed and integrated, there is no such thing that only some of the spacers contact the other glass plate, A glass panel having a stable structure can be manufactured. In addition, since the spacer is not bonded to the surface of the other glass plate on the gap side, the contact end portion 6 of the spacer is free from the surface of the other glass plate on the gap side, and the spacer and the spacer are not bonded to each other. Relative movement with respect to the other glass plate becomes possible. Therefore, even for deformation such as bending of the glass panel, the displacement can be absorbed by the relative movement between the spacer and the other glass plate.

According to the second feature of the method of manufacturing a glass panel according to the present invention, in addition to the function and effect of the first feature, the heat transfer resistance between the spacer and the other glass plate is increased. In addition, it is possible to prevent stress concentration and avoid the occurrence of cracks in the glass plate while suppressing heat conduction through the spacer. That is, according to the example shown in FIG. 3, since the contact portion is formed by the convex portion 7 at the contact end portion 6 of the spacer 5, the other glass plate 1B of the contact portion is formed.
The contact area with the other glass plate 1B can be reduced, and almost the entire area of the contact end 6 including the concave portion 8 of the contact end 6 of the spacer 5 can be brought into contact with the other glass plate 1B. Since it is a region, it is possible to avoid stress concentration on the other glass plate 1B. Further, since the contact area is reduced, the heat transfer resistance between the other glass plate 1B and the spacer 5 can be increased.

According to the third feature of the method of manufacturing a glass panel according to the present invention, the manufacturing is facilitated, and
The glass panel can be prevented from being damaged. That is,
According to the example shown in FIGS. 1 and 2, since the spacer forming paste 11 is arranged on the spacer arrangement surface 2A of one glass plate 1A, when the two glass plates 1A and 1B are integrated, these two glass plates 1A and 1B are connected to each other. The alignment need not be performed strictly. This is because the spacers 5 need only be appropriately dispersed and arranged on the spacer arrangement surface 2A. Further, the spacer forming paste 11 is maintained at a temperature equal to or higher than a softening point at which a semi-solidified state can be maintained after firing by using a predetermined semi-solidification treatment (for example, when using a glass paste using low-melting glass). By doing so, each of them is formed as a spacer preform material 9 in a semi-solid state, and these are formed to a predetermined height with respect to the spacer arrangement surface 2A (for example, the above-described method). Under the temperature condition that the spacer preform material 9 is slightly softened, the other glass plate 1B is pressed against the gap-side surface 2 so that the spacer preform 9 is assembled with the one glass plate 1A and molded simultaneously with the surrounding seal. B), the spacer 5 formed by firing is
When the other glass plate 1B is integrated by sealing the periphery 3, only a part of the contact end portions 6 do not come into contact with the other glass plate 1B and have a stable structure. Glass panels can be manufactured. Moreover, since the spacer 5 is not bonded to the surface 2 on the gap 4 side of the other glass plate 1B, the contact end 6 of the spacer 5 and the surface 2 on the gap 4 side of the other glass plate 1B are not bonded. Is free, and the relative movement between the spacer 5 and the other glass plate 1B becomes possible. Therefore, even for deformation such as bending of the glass panel, displacement can be absorbed by relative movement between the spacer 5 and the other glass plate 1B.

According to the fourth feature of the method for manufacturing a glass panel according to the present invention, in any of the first to third features, in addition to the operation and effect, a spacer is provided on the other glass plate. It can be formed in a welded state and in a predetermined shape. That is, according to the example shown in FIG. 1, if the spacer 5 is formed by baking a spacer-forming paste 11 made of low-melting glass having a lower fusing temperature than the softening point of the glass plate 1, the other glass is formed. The spacer preform 9 welded to the plate 1B can be formed. Therefore, after that, although it is lower than the firing temperature, the spacer preform 9
By pressing and shaping while maintaining the softening temperature of the spacer preform that maintains the softened state, it is possible to form the spacer 5 that has been well shaped and shaped.

According to the fifth aspect of the glass panel manufacturing method of the present invention, in addition to the functions and effects of the fourth aspect, a convex portion is formed at the contact end of the spacer without processing. Will be able to do it. That is, FIG.
Explaining with an example shown in (a), the protrusion forming material 12 has a softening temperature higher than the fusion temperature of the spacer preforming material 9 made of the low melting point glass constituting the spacer forming paste 11. Therefore, when the low-melting glass is solidified, the particles of the projection-forming material 12 can form the projection 7 protruding from the surface of the contact end 6 of the spacer 5.

According to the sixth aspect of the method of manufacturing a glass panel according to the present invention, in any of the first to fourth aspects, in addition to the operation and effect, damage to the spacer and the glass plate is reduced. Can be prevented. That is, for example, as shown in FIG. 1, the contact end 6 of the spacer 5 with the other glass plate 1B is formed on a smooth surface, so that when the glass panel is deformed, the other glass plate 1B Void 4
Since the sliding resistance of the contact end portion 6 with respect to the side surface 2 is reduced to make it relatively slippery, it is possible to reduce the external force applied to the spacer 5 when the glass panel is deformed. In addition, since the spacer preform 9 only needs to be pressed in a planar manner at the time of height adjustment and shaping, the processing is extremely easy.

According to the seventh aspect of the method of manufacturing a glass panel according to the present invention, the manufacturing is facilitated, and
The glass panel can be prevented from being damaged. That is,
Referring to the example shown in FIGS. 1B and 2G, the spacer forming paste 11 is arranged on the spacer arrangement surface 2A of one glass plate 1A.
When A and 1B are integrated, it is not necessary to strictly align these positions. This is because the spacers 5 need only be appropriately dispersed and arranged on the spacer arrangement surface 2A. Also, if the spacer forming paste 11 arranged on the spacer arrangement surface 2A is formed in a predetermined shape while adjusting the height to a predetermined height with respect to the spacer arrangement surface 2A (for example, the spacer If the forming paste 11 is screen-printed and the height is adjusted according to the thickness of the screen plate at the time of printing), the spacer 5 formed by sintering causes the other glass plate 1B to surround the surrounding glass plate 3B. When sealing is carried out and integrated, only a part of the contact ends 6 does not contact the other glass plate 1B, and a glass panel having a stable structure can be manufactured. Moreover, the spacer 5 is provided on the other glass plate 1B.
Is not adhered to the surface 2 of the glass plate 1B on the side of the space 4 and the other end of the other glass plate 1B is free. Relative movement with respect to the glass plate 1B becomes possible. Therefore, even for deformation such as bending of the glass panel, displacement can be absorbed by relative movement between the spacer 5 and the other glass plate 1B.

According to the eighth aspect of the method of manufacturing a glass panel according to the present invention, in any one of the first, third to fifth, and seventh aspects, in addition to the function and effect, the touch panel can be used. Processing can be simplified while maintaining the height accuracy of this section. That is, according to the example shown in FIG. 3, since the contact end portion 6 can be ground to form a concave portion and the original surface can be formed to a convex portion, it is sufficient that the contact end portion 6 is leveled before the grinding process. Since it is not necessary to press and shape both the convex portion 7 and the concave portion 8 at the time of shaping, the shaping becomes easy while maintaining the shaping accuracy. Therefore, the shaping of the contact end 6 is easy.

As a result, it is possible to prevent the glass panel from being damaged when an external force is applied thereto, while simplifying the processing steps.

In the above description of the means for solving the problems of the present invention, reference has been made to the drawings, and reference numerals have been cited for convenience of comparison with the drawings. Accordingly, the present invention is not limited to the configurations of the attached drawings and the accompanying drawings.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a glass panel according to the present invention will be described based on an example with reference to the drawings. The glass panel manufacturing method described below is, for example, a method of manufacturing a glass panel P including two glass plates as shown in FIG.

In the glass panel P shown in FIG. 4, a plurality of spacers 5 are provided between two glass plates 1A and 1B to be formed, a gap 4 is formed therebetween, and the two glass plates 1
Are sealed and integrated. The above glass panel P
Has a longitudinal section similar to that shown in FIG. 14 used in the description of the prior art, but the spacer 5 is fixed to one glass plate 1A.

An example of a process of manufacturing the glass panel P will be described. A spacer forming paste 11 capable of forming the spacer 5 is prepared in advance. This paste 11 is obtained by kneading a glass frit, which is fine particles of a low-melting glass having a fusion temperature lower than the softening point of the two glass plates 1, with a binder made of an organic agent or the like (for example, see FIG. 6).
If heated to the fusion temperature of the low melting glass,
As the temperature rises, the organic agent volatilizes, and at the same time, the fine particles of the low-melting glass are fused to form glass, and the spacer preform 9
Is formed. If the low melting glass is made crystallizable, then the glass will crystallize and the softening point will increase. The fusing temperature is a temperature at which the low-melting glass fluidizes, and the fluidization generally has a viscosity of 10 ⁵
It is generated at a temperature lower than the poise, and is about 400 to 600 ° C. for ordinary low melting point glass. Therefore, when the surroundings 3 of the glass panel P are subsequently sealed, a low melting glass is used as the sealing material S on the surroundings 3 to be heated to the fusing temperature and sealed by fusing. Even so, there is no possibility that the formed spacer is softened or fluidized again.

When the spacer forming paste 11 is combined with the glass panel P of one of the glass plates 1A, it is formed and arranged in a predetermined shape at a predetermined position on the spacer arrangement surface 2A which is on the side of the gap 4 when it is assembled. In this arrangement,
According to screen printing, a large number of paste molded bodies 10 can be simultaneously formed at predetermined positions at predetermined dimensions. Incidentally, the paste molded body 10 is vitrified by a baking treatment to become the spacer preform material 9, and for example, the transfer holes 21 having a diameter of 0.2 to 2.0 mm are formed at predetermined intervals (for example, a 20 mm lattice shape). Perforated, 20-30μm thick
Is pasted on the spacer arrangement surface 2A, and the paste 11 is printed on the spacer arrangement surface 2A via the screen plate 20. When the screen plate 20 is removed from the spacer arrangement surface 2A, a paste molded body 10 having a predetermined shape is formed on the spacer arrangement surface 2A. The thickness of the screen plate 20, the diameter of the transfer holes 21 formed in the screen plate 20 and the distance between them are determined by the composition of the paste 11, the characteristics of the low-melting glass as the base material, and the design conditions of the glass panel. It is set as appropriate according to the above. By the way, the baking treatment is to heat the low melting point glass to a fluidization temperature or higher,
By fusing the frit of the low melting point glass and then cooling, when using a normal low melting point glass, the fusing temperature is heated to 400 to 600 ° C. and cooled.

A plurality of spacer preforms 9 are formed by subjecting each of the spacer forming pastes 11 arranged as the paste molded body 10 on the spacer arrangement surface 2A of the glass plate 1 to a predetermined solidification treatment. . As the solidification process, the glass plate 1 holding the paste molded body 10 is charged into a furnace maintained at a firing temperature of, for example, 400 to 600 ° C., and a plurality of the paste molded bodies 10 are formed.
Is kept in the furnace until it becomes vitrified and becomes the spacer preform 9.

Next, the other end of a plurality of spacer preforms 9 formed in a furnace and one of which is fused to the glass plate 1 is brought into contact with the other glass plate 1B forming the glass panel P. It is formed at the contact end 6 that can be contacted. That is, after the one glass plate 1A is taken out of the furnace, the spacer preforms 9 are formed on the spacer 5 by shaping the spacer preform material 9 to a predetermined height with respect to the spacer placement surface 2A. It is. This step will be described with reference to a specific example. The temperature of the spacer preform 9 fused to the glass plate 1 taken out of the furnace is reduced by, for example, 40 from the firing temperature.
The spacer preforming material 9 is lowered by about 70 ° C.
C), the roller 30 whose surface is finely knurled is kept along the spacer arrangement surface 2A, and the distance of the roller surface from the spacer arrangement surface 2A is maintained at a predetermined distance (for example, 20 μm). The spacer 5 is formed by pressing the contact end 6 of the spacer preform material 9 and adjusting the height to a predetermined height. Here, the shaping process is performed because the surface of the paste molded body 10 after the paste 11 is screen-printed does not become parallel to the spacer arrangement surface 2A of the glass plate 1,
For example, as shown in FIG. 7, since the shape protrudes upward, if it is interposed between the two glass plates 1A and 1B as it is, only the protruding portion is a gap of the other glass plate 1B. This is because there is a possibility that the other glass plate 1B may be damaged, such as cracks, due to local contact with the surface 2 on the fourth side. The knurled surface of the roller 30 preferably has a surface roughness corresponding to the surface roughness of No. 8000 of the abrasive cloth.

The contact end 6 is rolled by the knurled roller 30 so that the contact end 6 is pressed.
At the time of height shaping, a convex portion 7 and a concave portion 8
Is formed, and the projection 7 can be shaped so as to have the predetermined height. In other words, since the knurling is easy to keep the depth of the groove constant,
The height of the peak as the convex portion 7 formed on the contact end portion 6 rolled at 0 can be maintained substantially uniform.

In the step of adjusting the height of the spacer preformed material, it is also possible to adjust the height by pressing a pair of glass plates when laminating a pair of glasses and firing the peripheral sealing paste.

With respect to one glass plate 1A on which the spacer 5 is formed and arranged on the spacer arrangement surface 2A as described above, the surface 2 on the gap 4 side of the other glass plate 1B is
The glass panel P is manufactured integrally with the one glass plate 1A so as to face the contact end 6 after the height adjustment and shaping. That is, with the surface 2 on the side of the gap 4 of the other glass plate 1B facing upward, the one glass plate 1A is covered from above with the spacers 5 facing down, and the lower surface is low over the entire circumference 3 around it. A glass paste made of a melting point glass is disposed as a sealing material S, and is melted between the other glass plate 1B and the periphery 3 to seal the two. At this time, a communication hole (not shown) communicating with the space 4 is provided, and after vacuum suction is performed from the space 4 through the communication hole, the communication hole is sealed to produce a vacuum glass panel. It is also possible. In this case, the degree of vacuum in the space 4 is 10
^-2 torr or less is preferable. In addition, if it is set to 10 ^-4 torr or less, the heat insulating performance is further improved.

Since the manufacturing process is configured as described above, in the step of arranging the paste molded body for forming the spacer, the entire paste formed body can be formed at a time by screen printing, and the firing is performed in a furnace. If, for example, spacer preforms can be arranged on a number of glass plates at the same time, and the surrounding sealing and integration processes after overlapping with the other glass plate are also processed in a vacuum furnace, Since a large number of glass panels can be formed, the process is suitable for mass production. In particular, when crystallized glass is used for the spacer, the softening point as a spacer is greatly increased with respect to the softening point when the spacer preform is formed. It is not necessary to use the one at the arrival temperature.

As described above, in the glass panel manufactured by the method for manufacturing a glass panel according to the present invention described above, one end of the spacer is fixed to one glass plate, and the other contact end is fixed to the glass plate. Since the spacer is disposed so as to be relatively movable with respect to the other glass plate, the spacer is displaced with respect to the other glass plate even if the spacer is displaced with respect to the other glass plate in practical use even if the spacer is bent by wind pressure or the like. It is possible to prevent the glass plate from being damaged due to the restriction due to the arrangement. Further, since a concave portion and a convex portion are formed at the contact end portion, and the convex portion is a contact portion with the other glass plate, heat transfer resistance at the boundary portion can be increased. In addition, the heat insulating properties of the glass panel can be improved.

[Alternative Embodiment] <1> In order to form the convex portion and the concave portion, not only the method in the above-described embodiment but also, for example, grinding the contact end portion after shaping and forming a groove-like shape. The peak between the concave portion and the groove may be formed as a convex portion. Further, the surface of the original contact end portion that survives during that may be formed as a convex portion. Further, when adjusting the height of the contact end, the contact end may be shaped into a smooth surface. If the smooth surface is ground to form a groove to form a concave portion and the remaining smooth surface to be a convex portion, the convex portion is precisely adjusted in height.

<2> Instead of shaping and shaping the spacer preform 9, shaping and shaping may be performed by pressing the paste molded body 10 disposed on one glass plate 1 A. For example, when the seal is fired, the other glass plate may be pressed to form a uniform shape.

<3> In order to form a convex portion at the contact end portion of the spacer, for example, as shown in FIG. 5A, a convex portion forming material having a heat-resistant temperature higher than the spacer pre-forming material softening temperature in advance. Particles 12 (for example, silicon oxide, aluminum oxide, etc.) may be added to the low-melting glass and kneaded to prepare the spacer-forming paste 11. In this way, when the glass frit is fused and the binder is volatilized at the time of firing of the paste molded body 10, the particles of the protrusion forming material 12 hardly deform,
The formed spacer preliminary forming material 9 includes the convex portion forming material 1.
2 are formed. This convex part forming material 12
Since the spacer preform material is not softened at the softening temperature, the protruding state is maintained and the convex portion 7 is formed on the contact end portion 6 even when the height is adjusted by pressing.

<4> To seal the periphery of the glass plate,
For example, as shown in FIG.
If a printing technique is used to apply a glass paste composed of a low melting point glass as the sealing material S, the labor can be saved and the processing can be performed at high speed. That is, as described in the above-described embodiment, screen printing is used for disposing the sealing material together with disposing the spacer forming paste 11, and the spacer preforming material 9 fixed and disposed on the spacer disposing surface 2A is previously formed. One glass plate 1A which has been shaped and shaped is prepared, and a glass paste made of a low-melting glass for forming a sealing material S is printed on the entire periphery 3 of the other glass plate 1B by printing. (See (f) in the figure), the two glass plates 1A and 1B are integrated in a vacuum furnace (see (g) in the figure).
By doing so, continuous production becomes possible and mass production becomes easy. Here, the glass paste for forming the sealing material S may be slightly thicker than the height of the spacer 5. This is because the glass paste can be pressurized when the two glass plates 1A and 1B are put together, and some shrinkage is expected during firing of the glass paste. It should be noted that it is also possible to use a simple low-melting glass for the glass frit constituting the glass paste, but similarly to the above embodiment,
If crystallized glass is used, both the spacer 5 and the sealing material S can be formed of the same glass, and an increase in strength can be expected.

<5> In order to perform sealing in a vacuum furnace, the spacer forming paste 11
The glass paste for the sealing material S is placed on one of the glass plates 1A in which a plurality of paste molded bodies 10 in a state of being shaped and arranged at predetermined positions and around the surface 2 on the side of the gap 4 are printed. The other glass plate 1B printed to a thickness equal to or greater than the height of the paste molded body 10 is opposed to the glass plate 1B with the surface 2 on the side of the gap 4 being maintained at a distance equal to or greater than the gap of the gap 4, for example, 400 It is held in a vacuum furnace maintained at a firing temperature of up to 600 ° C. to perform defoaming of both glass pastes and melting of glass frit, so that the sealing material S is placed on the spacer arrangement surface 2A of the one glass plate 1A. The two glass plates 1A, 1B are allowed to come into contact with each other and are allowed to cool while being pressed against each other.
B is integrated to form a glass panel P. here,
Since the coating thickness of the paste for the sealing material S is equal to or larger than the height of the paste molded body 10, the other end of the paste molded body 10 is pressed against the other glass plate 1B. Can be prevented, and the formation of the projection 7 at the contact end 6 is not hindered. According to the manufacturing procedure as described above, the gap 4 of the glass panel is maintained at a degree of vacuum in the furnace when firing the glass paste in the furnace. It can be maintained at a pressure lower than the medium pressure. This is because the inside of the gap 4 is further depressurized by cooling after sealing. Further, since the firing of the spacer 5 and the sealing with the sealing material S are performed simultaneously, the working efficiency is improved, and moreover, a plurality of glass panels P can be simultaneously formed in the furnace. In addition, if the heating temperature at the time of the above-mentioned defoaming treatment is made higher than the above-mentioned baking temperature by about 20 to 30 ° C., the defoaming is promoted, so that the time for the defoaming treatment step can be reduced. Therefore, if vacuum heat treatment equipment is prepared, the operation cost can be significantly reduced.

<6> The example in which the spacer forming paste is arranged by the printing method has been described above. However, similar to the above-described example, the spacer preform is formed by fusing rather than the softening point of the glass plate. After adding and kneading a binder to a powdery low-melting glass having a low temperature to prepare a paste for forming a spacer, the paste for forming a spacer is disposed on a spacer arrangement surface of one glass plate by a dispenser or the like. A paste molded body may be formed. In this case, it is preferable that the paste molded body is subjected to height shaping. This is because the shape of the spacer preform is improved.

<7> In the above, an example in which the paste molded bodies are arranged in a lattice has been described. However, as in the case of the above <6>, the spacer forming paste 11 is arranged on one glass plate 1A using a dispenser or the like. For example, as shown in FIG. 9, the spacer forming paste 11 is linearly discharged onto the spacer arrangement surface 2A (see FIG. 9A), and the peripheral sealing material is discharged onto the other glass plate 1B. Then, it may be fired. Discharge linearly with a wire diameter of 0.4 mm, for example, 40
It is aligned with the one glass plate 1A at an interval of mm (see (b) in the figure), placed on the spacer placement surface 2A, and after firing, is shaped and shaped with a grooved roller to correspond to the groove bottom of the grooved roller. It is only necessary to form a convex portion 7 to be brought into contact with the surface 2 on the side of the gap 4 of the other glass plate 1B.

<8> In the above-described embodiment, an example has been described in which the spacer forming paste 11 is screen-printed on the spacer arrangement surface 2A of the plate glass 1. However, the printing method of the paste 11 on the glass surface 2A is as follows. Arbitrary, letterpress, intaglio, planographic, etc. can be used. Further, a photosensitive film is formed on the glass surface 2A,
On the other hand, the paste 11 may be applied and baked after irradiating light to the position where the spacer 5 is to be arranged and removing the photosensitive portion. The remaining film can be removed by the firing. In addition, a printing method using a functional film can be applied.

<9> In the above, the example in which the paste forming body is disposed on only one glass plate has been described. However, the paste forming body is disposed on both surfaces 2 of the glass plates 1A and 1B on the void side. The spacers 5 may be formed in advance. That is, one glass plate 1A and the other glass plate 1A
The surface 2 on the gap side of both B and B is used as the spacer arrangement surface 2A. For example, as shown in FIG.
A and a paste forming body are arranged at positions facing the spacer arrangement surface 2A of each of the spacers 1A and 1B to form spacers 5, and a convex portion 7 and a concave portion 8 are formed at the contact end 6 of each spacer 5;
The contact ends 6 may be brought into contact with each other. According to this configuration, the spacers 5 and 5 on both sides come into contact with each other by the convex portions 7, so that the thermal resistance of heat transfer via the spacers 5 can be increased. As shown in FIG. 11, the spacer arrangement surface 2 of both glass plates 1A and 1B is provided.
The positions of the spacers 5 arranged at A may be different from each other so that the contact end portions 6 of the respective spacers 5 contact the facing surface 2 on the gap side.

<10> The glass panel of the present invention can be used for a wide variety of applications.
For vehicles (car window glass, railcar window glass, ship window glass) and equipment elements (plasma display surface glass, refrigerator doors and walls, heat insulation doors and walls), etc. It can be used.

<11> The glass sheet is not limited to the glass sheet having a thickness of 3 mm described in the above embodiment, but may be a glass sheet having another thickness. The type of glass can be arbitrarily selected. For example, template glass, ground glass (glass having a function of diffusing light by surface treatment), meshed glass or tempered glass, heat ray absorption, ultraviolet ray absorption, heat ray It may be a sheet glass provided with a function such as reflection, or a combination thereof.

<12> Regarding the composition of the glass,
Soda silicate glass (soda lime silica glass), borosilicate glass, aluminosilicate glass, and various crystallized glasses may be used.

<13> The glass sheet is not limited to the one glass sheet and the other glass sheet having different lengths and widths, and is not limited to those having the same size. It may be something. The two glass sheets may be overlapped so that the edges are aligned. Further, a glass panel may be configured by combining one plate glass and the other plate glass having different thickness dimensions.

<14> The spacing member is not limited to the stainless steel spacer described in the above embodiment. For example, a nickel alloy containing a nickel-base superalloy such as Inconel 718, or other alloys may be used. Alternatively, other metals, quartz glass, ceramics, or the like may be used. In short, any material may be used as long as it is hardly deformed so that the two glass sheets do not come into contact with each other due to an external force. For example, both glass plates 1
A and a paste forming body are arranged at positions facing the spacer arrangement surface 2A of each of the spacers 1A and 1B to form spacers 5, and a convex portion 7 and a concave portion 8 are formed at the contact end 6 of each spacer 5;
The contact ends 6 may be brought into contact with each other. According to this configuration, since the space between the spacers 5 and 5 on both sides comes into contact with each other by the protrusions 7, the heat transfer resistance of heat transfer via the spacers 5 can be increased. FIG.
As shown in the figure, the positions of the spacers 5 arranged on the spacer arrangement surface 2A of the two glass plates 1A and 1B are different from each other,
The contact end portions 6 of the spacers 5 may be brought into contact with the facing surface 2 on the gap side.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a process of combining glass panels according to the present invention.

FIG. 2 is an explanatory view of an example of an assembling process of a glass panel according to the present invention.

FIG. 3 is a sectional view of a main part showing an example of a spacer section of the present invention.

FIG. 4 is a partially cutaway perspective view showing an example of a glass panel according to the present invention.

FIG. 5 is a perspective view showing an example of the shape of a spacer.

FIG. 6 is an explanatory view showing an example of the configuration of a glass paste.

FIG. 7 is an explanatory view of a shape of a paste molded body.

FIG. 8 is a sectional view showing another manufacturing method according to the present invention.

FIG. 9 is a process explanatory view showing another manufacturing method according to the present invention.

FIG. 10 is a process explanatory view showing another manufacturing method according to the present invention.

FIG. 11 is a process explanatory view showing another manufacturing method according to the present invention.

FIG. 12 is a cross-sectional view for explaining a conventionally proposed method of manufacturing a glass panel.

13 is a cross-sectional view for explaining a problem of the method of manufacturing the glass panel shown in FIG.

FIG. 14 is a cross-sectional view for explaining a conventional method for manufacturing a glass panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glass plate 1A One glass plate 1B The other glass plate 2 Surface on the gap side of glass plate 2A Spacer arrangement surface 3 Around glass plate 4 Gap between glass plates 5 Spacer 6 Spacer 6 Contact end of spacer 11 Spacer forming paste 12 Convex part forming material

Claims (8)

[Claims] 1. A method of manufacturing a glass panel, comprising: providing a plurality of spacers between a plurality of glass plates, forming a gap between the plurality of glass plates, and sealing and integrating the glass plates with each other. A spacer forming paste capable of forming the spacer is prepared in advance, and the spacer forming paste is formed and arranged in a predetermined shape on the surface on the gap side of one glass plate. A predetermined solidification process is performed on each of the spacer forming pastes to form a plurality of spacer preform materials, and the plurality of spacer preform materials after the solidification process can be brought into contact with the other glass plate. Ends are shaped and shaped to a predetermined height with respect to the spacer placement surface, respectively, to form the spacer, and the surface of the other glass plate on the gap side is a contact end after the shaping. The one of the Method of manufacturing a glass panel integrated with the scan plate. 2. The method for manufacturing a glass panel according to claim 1, wherein a contact end portion of the spacer after the height adjustment and shaping is ground to form a convex portion and a concave portion at the contact end portion. 3. A method of manufacturing a glass panel, comprising providing a plurality of spacers between a plurality of glass plates, forming a space between the plurality of glass plates, and sealing the periphery of the glass plates to form a unit. A spacer forming paste capable of forming the spacer is prepared in advance, and the spacer forming paste is formed and arranged in a predetermined shape on the surface on the gap side of one glass plate. A semi-solidification process is performed on each of the spacer forming pastes to form a semi-solidified spacer preformed material, and a contact end portion of the semi-solidified spacer preformed material that can contact the other glass plate. Are respectively shaped and shaped to a predetermined height with respect to the spacer arrangement surface, and a plurality of spacers are formed by subjecting each of the spacer preformed materials after the shape shaping to a predetermined solidification treatment. Of glass plate A method of manufacturing a glass panel, wherein the surface on the gap side is opposed to the contact end of the spacer and integrated with the one glass plate. 4. A low melting glass having a lower melting point than the softening point of the glass plate, and a binder is added to the low melting glass and kneaded into the spacer forming paste, and is fired together with the one glass plate at a predetermined firing temperature. Forming a plurality of spacer preforms, and holding the plurality of spacer preforms at a spacer preform softening temperature lower than the firing temperature, while pressing and shaping the contact end. The method for producing a glass panel according to claim 1, wherein 5. The glass panel according to claim 4, wherein particles of the projection-forming material having a heat-resistant temperature higher than the softening temperature of the spacer-preforming material are added to the low-melting glass and kneaded into the spacer-forming paste. Production method. 6. The method of manufacturing a glass panel according to claim 1, wherein the contact end is shaped into a smooth surface when adjusting the height of the contact end. 7. A method for manufacturing a glass panel, comprising providing a plurality of spacers between a plurality of glass plates, forming a gap between the plurality of glass plates, and sealing the periphery of the glass plates to integrate them. A spacer forming paste capable of forming the spacer is prepared in advance, and the spacer forming paste is formed and arranged in a predetermined shape at a plurality of positions on the gap side surface of one glass plate. After forming the spacers, the respective contact ends that can be brought into contact with the other glass plate after shaping are shaped and shaped to a predetermined height with respect to the spacer arrangement surface. A predetermined solidification treatment is applied to each of the pastes to form the spacers, and the gap-side surface of the other glass plate is opposed to the contact end of each spacer to be integrated with the one glass plate. Manufacture of glass panels Law. 8. The method according to claim 1, wherein at the time of shaping the contact end, a convex portion and a concave portion are formed at the contact end portion, and the convex portion is shaped so as to have the predetermined height. The method for producing a glass panel according to any one of Items 3 to 5, and 7.