KR20110077893A - Method for fabricating exhausting port of flat glass panel and flat glass panel product fabricated using thereof - Google Patents

Abstract

PURPOSE: A method for forming the exhaust hole of a glass panel and glass panel products manufactured by the same are provided to secure the superior sealing characteristic by heating a sealing material to close the exhaust hole. CONSTITUTION: Exhaust holes(110, 120) are formed in one side of plate glass(100). An exhaust pipe(130) is vertically inserted to the upper side of the exhaust holes. A sealing material is formed at the interface between the exhaust pipe and the exhaust holes. The sealing material is welded by heat in order to seal the interface. Gas from the plate glass is exhausted through the exhaust pipe. The sealing material is re-heated to form the sealing material in a fluid sate. The exhaust pipe is slowly eliminated. The exhaust holes are closed by solidifying the sealing material.

Description

Method for forming an exhaust port of a glass panel and a glass panel product manufactured by using the same. {METHOD FOR FABRICATING EXHAUSTING PORT OF FLAT GLASS PANEL AND FLAT GLASS PANEL PRODUCT FABRICATED USING THEREOF}

The present invention forms a glass panel (for example, a vacuum multilayer glass, a plasma display panel, etc.) in which the space portion between a pair of plate glass is reduced in pressure (or gas encapsulation), and the exhaust port when the pressure reduction in the space portion is performed. It relates to a technique for forming in the panel body and sealing the exhaust port after decompression.

Conventionally, when installing an exhaust port for discharging gas inside the sealed space between the two panes to the outside, one of the pair of panes arranged at intervals in the thickness direction is provided on the one pane. An exhaust hole was provided, and an exhaust pipe was installed vertically in the exhaust hole.

At the same time, glass is melted by heating and melting a sealing molding material through a sealing molding material at a junction between the lower end portion of the exhaust pipe and the upper circumference of the exhaust hole of the plate glass. The vent of the panel was formed.

Next, the gas between the plate glass was discharged | emitted through the said exhaust port outside, pressure reduction was carried out, and the glass tube was heated, and the front-end part was closed and sealed. Therefore, it was inevitable that the exhaust pipe protruded from the glass panel surface.

1A to 1C are cross-sectional views illustrating a method for forming an exhaust port according to the prior art.

Referring to FIG. 1A, the exhaust holes 5 and 6 are formed at one side of the upper pane 18.

Referring to FIG. 1B, after the exhaust pipe 7 is inserted into the upper end portion 6 of the exhaust hole, the sealing molding material 8 is disposed at the junction between the exhaust pipe 7 and the upper plate glass 18.

Referring to FIG. 1C, the exhaust port of the plate glass is formed by heating and melting the sealing molding material 8 so as to flow and solidify the sealing molding material to form the sealing portion 19.

When the exhaust port is completed as described above, the gas is discharged between the panes through the exhaust port, and the upper part of the exhaust pipe 7 is sealed.

2A and 2B are cross-sectional views illustrating a method for closing an exhaust port according to the prior art.

Referring to FIG. 2A, a cover 61 including a suction port for depressurizing is covered with an upper portion of the exhaust pipe 7 including the seal 19.

Next, the upper part of the exhaust pipe 7 is heated by the heating device 62 while discharging the gas between the panes 14 and 18 through the suction port provided at one side of the cover 61.

At this time, a sealing member 15 is further formed between the panes 14 and 18 to block the gas sucked from the outside while maintaining the internal space.

Referring to FIG. 2B, the exhaust pipe 7 is melted to close the exhaust pipe.

The conventional plate glass exhaust port formation and sealing method described above has a problem of limiting workability when performing a post-processing process, such as bonding or multi-layer processing, because the glass tube used as the exhaust pipe protrudes from one glass surface of the plate glass.

In particular, when the exhaust pipe is damaged in the process of laminating or post-processing the glass, since the vacuum or reduced pressure between the glass is damaged, a protective cap may be further formed on the exhaust port in the closed state to prevent this.

3 is a cross-sectional view showing an exhaust vent protection cap according to the prior art.

Referring to Figure 3, it can be seen that the protective cap 70 is formed on the upper portion of the protruding exhaust port provided with the sealing portion 19 and the discharge glass tube 7 in the closed state. In such a case, damage to the exhaust port in the post-processing process can be prevented, but a multilayer processing process is impossible, and there is an inconvenience in that a separate protective cap 70 is formed.

In addition, when the conventional exhaust pipe is closed by heating, the glass tube is melted and closed, and thus the plate glass constituting the glass panel may be deformed because the temperature must be raised above the softening point temperature of the general plate glass.

4 is a cross-sectional view showing a problem that the glass panel is deformed in the exhaust port closing step according to the prior art.

Referring to FIG. 4, it can be seen that a protruding exhaust port is formed in the upper portion of the glass panel provided in the form including the sealing member 15 and the gap maintaining member 16 between the two panes 14 and 18. . At this time, the sealing portion 19 is formed in order to seal the interface between the exhaust pipe 7 of the protruding exhaust port and the upper pane 18. There was a problem that (18) was damaged.

In order to solve the above-mentioned problem, when manufacturing the glass panel, the exhaust port for reducing the space portion between the plate glass should be formed to the minimum height, and the research on the method of efficiently sealing the exhaust port without damaging the glass panel is ongoing. There is no clear achievement yet.

In order to solve the above problems, the present invention by exhausting the gas between the glass panel using the exhaust pipe, by removing the exhaust pipe while reheating the sealing molding material, by the sealing molding material remaining in the lower portion of the exhaust pipe naturally It is an object of the present invention to provide a method for forming an exhaust port of a glass panel capable of ensuring a good sealing property without having an exhaust pipe finally protruded as an exhaust port, and a glass panel product manufactured using the hole.

Method for forming an exhaust port of the glass panel according to the present invention is to form an exhaust port for discharging the gas in the sealed space to the outside in the plate glass of any one of the pair of plate glass having a closed space spaced in the thickness direction A method, comprising: forming an exhaust hole in one of the panes, inserting an exhaust pipe vertically above the exhaust hole, and forming a sealing molding material at an interface between the exhaust pipe and the exhaust hole. And sealing the interface between the exhaust hole and the exhaust pipe by heating and melting the sealing molding material, discharging the gas between the plate glass to the outside through the exhaust pipe, and the sealing molding material. Reheating to form the sealing molding material in a flow state and gradually removing the exhaust pipe in a vertical direction; And closing the exhaust hole by the sealing molding material which is separated from the edge part, and solidifying the sealing molding material remaining in the exhaust hole to ensure sealing property.

Here, the exhaust pipe is characterized in that formed of a metal tube, glass tube or ceramic tube, the outer diameter of the exhaust pipe is characterized in that it is formed to 3mm or less, the inner diameter is formed to 1mm or more.

In addition, the cross-section of the exhaust hole is characterized in that it is formed in the shape of a funnel having an inclined surface at the top, wherein the exhaust hole inclined surface is formed in a step shape, the diameter of the portion of the exhaust pipe is inserted into the exhaust pipe outer diameter of the exhaust pipe It is formed larger than 0.2mm based on, and the minimum diameter of the exhaust hole is characterized in that it is formed smaller than 0.5mm based on the outer diameter of the exhaust pipe.

Next, the sealing molding material is characterized in that the softening point temperature using a material 200 ~ 300 ℃ lower than the softening point of the plate glass.

In addition, the glass panel product according to the present invention is manufactured by the above-described method, characterized in that it has a non-extruded flat exhaust port.

As described above, the method for forming the glass panel exhaust port of the present invention minimizes the exhaust port protrusion by heating the sealing molding material so that the exhaust hole can be sealed while the exhaust pipe is removed after the pressure is reduced through the exhaust pipe. It provides the effect that the constraints caused by the protruding portion can be minimized in the later bonding or laminating process of the glass panel.

In addition, by using a sealing molding material having a melting point lower than that of the plate glass in the airtight sealing operation, it is possible to save energy used in the sealing process by sealing at a lower temperature than conventionally, and to prevent the deformation of the glass panel, thereby improving productivity. Provides an effect that can be maximized.

Hereinafter, a method for forming an exhaust port of the glass panel according to the present invention and a glass panel product manufactured using the same will be described in more detail.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

5A to 5G are cross-sectional views illustrating a method of forming an exhaust port of the glass panel according to the first embodiment of the present invention.

Referring to FIG. 5A, in the first characteristic configuration of the present invention, a pressure-sensitive seal for sealing a closed space between a pair of plate glass in one of the pair of plate glass arranged at intervals in the thickness direction is provided. An exhaust port is formed. In this case, for convenience of description, the plate glass in which the exhaust port is formed is referred to as the upper plate glass 100, and only a cross section of the portion in which the exhaust port is formed is illustrated.

As shown, exhaust holes 110 and 120 penetrating in the thickness direction are formed on one side of the upper pane 100, and the exhaust holes 110 and 120 according to the present invention gradually decrease in diameter from the upper side toward the lower side. It is preferable to form a funnel to be.

The reason for having the funnel-type exhaust holes 110 and 120 as described above is to allow the sealing molding material in a molten state to naturally flow into the exhaust holes 110 and 120 by the heating, so that the sealing can be made.

Therefore, the upper surface 120 of the exhaust hole for inducing the molding material for sealing is to be formed in the surface portion of the plate glass 100, the shape of the upper surface 120 is formed in various forms according to the processing situation of the glass panel Can be.

In FIG. 5A, the planar shape is formed in two steps so that two concentric circles are formed. In FIG. 6A, a single staircase is mixed in a single inclined plane, and in FIG. 7A, the inclined plane in a multistage staircase. You can see this mixed. Each of the above embodiments will be described in detail with reference to the accompanying drawings.

Next, referring to FIG. 5B, the exhaust pipe 130 is inserted into the upper surfaces 120 of the exhaust holes 110 and 120 in the vertical direction, and a sealing molding material is formed at the interface between the exhaust pipe 130 and the upper plate glass 100. 140). At this time, the exhaust pipe 130 may be formed of a metal tube, a glass tube or a ceramic tube, but is not always limited thereto. That is, any material that is temporarily fused with the sealing molding material 140 and can be removed in a subsequent process can be used without limitation.

Next, a primary heating process is performed on the sealing member 140 to form a sealing member 150 bonded to the exhaust hole, and the interface between the exhaust pipe 130 and the upper plate 100 is Make sure that it can be completely sealed.

Subsequently, when the sealed state of the exhaust pipe 130 and the upper plate glass 100 is maintained, a pressure reduction process of discharging the gas inside the glass panel is performed. At this time, the depressurization of the glass panel according to the present invention may be performed in a vacuum chamber or by making a local vacuum environment in the upper surface 120 of the exhaust hole. Here, the exhaust pipe 130 is not limited as the height of the existing exhaust pipe because it is a target to be removed in a subsequent process.

In addition, the outer diameter of the exhaust pipe 130 is preferably 3mm or less, the inner diameter is preferably formed to be 1mm or more. When the outer diameter of the exhaust pipe 130 exceeds 3mm, the exhaust holes 110 and 120 may be excessively expanded, so that the sealing process may be difficult. In addition, by setting the inner diameter of the exhaust pipe 130 to 1mm or more, to ensure a space in which the gas inside the glass panel is smoothly exhausted in the depressurization process.

In addition, when the size of the exhaust pipe is set as described above, the size of the exhaust hole may also be determined, and the diameter of the portion into which the exhaust pipe of the exhaust hole is inserted is preferably formed to be larger than 0.2 mm based on the outer diameter of the exhaust pipe. Preferably, the minimum diameter of the exhaust hole is smaller than 0.5 mm based on the outer diameter of the exhaust pipe. When the diameter of the portion where the upper portion of the exhaust hole is inserted is larger than the outer diameter of the exhaust pipe by less than 0.2 mm, the insertion process of the exhaust pipe may be difficult.

Subsequently, referring to FIG. 5C, the sealing molding material 150 formed at the interface between the exhaust pipe 130 and the upper plate glass 100 is first heated, so that the lower part of the sealing molding material 150 is the upper surface of the exhaust hole. To be in close contact with (120).

Next, the space between the glass panels is reduced in pressure using the vacuum chamber or the local vacuum apparatus described above. In addition, in order to manufacture a glass panel product such as a plasma display panel, a gas encapsulation process after decompression is also continuously performed.

Next, referring to FIG. 5D, the sealing molding material 150 is melted by heating the sealing molding material 150 in a secondary heating process using the heating device 160.

Next, referring to FIG. 5E, the exhaust pipe 130 is gradually removed in the vertical direction so that the sealing molding material 150 in the molten state remains on the upper surface 120 of the exhaust hole.

At this time, the sealing member 150 is a softening point temperature by using a material 200 ~ 300 ℃ lower than the softening point of the plate glass used in the glass panel, so that the heat-sealing process can be performed at a lower temperature than conventional. Therefore, the energy used in the sealing process can be saved, and the deformation of the glass panel can be prevented to maximize the productivity.

Next, referring to FIG. 5F, the heating unit 160 may be sufficiently heated to allow the molding member 170 having a sealed upper portion to flow in a molten state and to be embedded in the lower portion 110 of the exhaust hole. By doing so, the exhaust material forming member 170 is formed.

Next, referring to 5g, after the heating device 160 is removed, the molding material 170 for the exhaust port is solidified to be in the form of the exhaust port sealant 175 and the exhaust port can be completely closed.

As described above, in the present invention, the exhaust pipe is gradually removed while the molding material for sealing the exhaust pipe is heated so that the exhaust hole can be closed by the remaining sealing molding material. Therefore, the exhaust port protrusion may be minimized, and the constraints due to the protrusion may be minimized in the process of bonding or laminating the glass panel later. At this time, in the present invention, it is preferable that the exhaust port sealant 175 is not completely exposed to the surface of the upper pane 100. However, in order to reduce energy consumption in the process of FIG. 5D or 5E, heating for melting the sealant can be minimized. As a result, a part of the exhaust port sealing member 170 may protrude from the surface of the upper pane 100. At this time, as the allowable range, as long as it is within 1mm may not affect the method for producing the exhaust vent according to the present invention.

As described above, the method for forming an exhaust port of the glass panel according to the present invention may be used in various embodiments depending on the shape of the induction slope of the exhaust hole, which is one of the main features of the present invention.

6A to 6D are cross-sectional views illustrating a method of forming an exhaust port of a glass panel according to a second embodiment of the present invention.

Referring to FIG. 6A, there are illustrated exhaust holes 210 and 220 in which a single stepped exhaust hole is coupled to a basic funnel type exhaust hole, and the upper surface of the exhaust hole 220 having a single inclined surface in the single stepped exhaust hole. It is provided in the upper pane 200.

Next, referring to FIG. 6B, an exhaust pipe is inserted into the upper surface 220 of the exhaust hole. At this time, the melting heating process is performed at the same time as the insertion so that the lower end of the sealing member 240 may be fused to the upper surface 220 of the exhaust hole as shown in FIG. 6C, and the decompression process may be performed smoothly. .

Next, referring to FIG. 6D, the exhaust pipe 230 is removed to allow the exhaust port sealant 250 to flow into the exhaust hole 210 having the upper surface 220. At this time, the forming depth of the exhaust port sealant 270 may be freely adjusted according to the angle of the exhaust hole 220, and thus, the vacuum reliability of the glass panel may be adjusted.

7A to 7D are cross-sectional views illustrating a method of forming an exhaust port of a glass panel according to a third embodiment of the present invention.

7A to 7D, an upper plate 300 having an upper surface 320 having a shape in which inclined surfaces are mixed in a multilayered stepped exhaust hole is provided. The lower exhaust hole 310 is completely sealed using the sealing molding material 330, and the exhaust port sealing material 370 may be formed.

In the structure of the exhaust holes 310 and 320 of this type, an area in which the sealing molding material 330 is in close contact with the exhaust hole during the initial primary melt heating may be increased to further improve the reliability of the depressurization process.

In addition, the sealing member 350 is more easily guided to the lower exhaust hole 310 during the secondary melt heating by the stepped inclination, and the exhaust sealing member 370 having a more stable structure is formed than the general inclined type. can do.

As described above, the method for forming the exhaust port of the glass panel according to the present invention may be performed in various embodiments, and the glass panel product using the same may be formed in the following form.

8 is a perspective view showing a glass panel according to the present invention.

Referring to FIG. 8, an edge sealant 480 is formed between the upper pane 400 and the lower pane 490, and an outlet 420 is formed to reduce the space between the panes 400 and 490. do. At this time, the outlet 420 includes an exhaust port sealing material, it is preferable to have a height similar to the surface height of the upper pane 400.

In addition, it is preferable to form a sealing molding material having a melting temperature higher than the melting temperature of the edge sealing material 480 for the glass panel product according to the present invention. In the case of forming a sealing molding material lower than the melting temperature of the edge sealing material 480, it is possible to prevent the exhaust port sealing material from being damaged during the external sealing of the glass panel, thereby reducing the defects and increasing the yield. Can be.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be manufactured in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1a to 1c are cross-sectional views showing a method for forming an exhaust port according to the prior art.

2a and 2b are cross-sectional views showing a method for closing the exhaust vent according to the prior art.

Figure 3 is a cross-sectional view showing an exhaust protection cap according to the prior art.

4 is a cross-sectional view showing a problem that the glass panel is deformed in the exhaust port closing step according to the prior art.

5A to 5G are cross-sectional views illustrating a method of forming an exhaust port of the glass panel according to the first embodiment of the present invention.

6A to 6D are cross-sectional views illustrating a method of forming an exhaust port of the glass panel according to the second embodiment of the present invention.

7A to 7D are cross-sectional views illustrating a method of forming an exhaust port of a glass panel according to a third embodiment of the present invention.

8 is a perspective view of a glass panel according to the present invention;

Claims (8)

In the method of forming an exhaust port for discharging the gas in the closed space to the outside of any one of a pair of plate glass having a closed space spaced in the thickness direction, Forming an exhaust hole in the plate glass; Inserting an exhaust pipe vertically above the exhaust hole; Forming a sealing molding material at an interface between the exhaust pipe and the exhaust hole; Heat melting the sealing molding material to seal an interface between the exhaust hole and the exhaust pipe; Discharging gas between the panes to the outside through the exhaust pipe; Reheating the sealing molding material to form the sealing molding material in a flow state, and then gradually removing the exhaust pipe in a vertical direction; Allowing the exhaust hole to be closed by the sealing molding material which is separated from the edge portion of the exhaust pipe; And And solidifying the sealing molding material remaining in the exhaust hole to ensure sealing property. The method of claim 1, And said exhaust pipe is formed of a metal tube, a glass tube or a ceramic tube. The method of claim 1, The outer diameter of the exhaust pipe is formed in 3mm or less, the inner diameter is formed in the exhaust port forming method of 1mm or more. The method of claim 1, A cross section of the exhaust hole is formed in the form of a funnel having an inclined surface on the top of the exhaust panel forming method. The method of claim 4, wherein And the inclined surface of the exhaust hole is formed in a step shape. The method of claim 4, wherein The diameter of the portion where the exhaust pipe of the exhaust hole is inserted is formed larger than 0.2mm based on the outer diameter of the exhaust pipe, the minimum diameter of the exhaust hole is formed to be smaller than 0.5mm based on the outer diameter of the exhaust pipe Method for forming the exhaust port of the glass panel. The method of claim 1, The sealing molding material is a method for forming the exhaust port of the glass panel, characterized in that the softening point temperature is used 200 ~ 300 ℃ lower than the softening point of the plate glass. A glass panel product manufactured by the method of any one of claims 1 to 7, having a non-extruded planar exhaust port.

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