JP3249638B2 - Manufacturing method of glass panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for manufacturing a glass panel.

[0002]

2. Description of the Related Art Conventionally, a glass panel has been manufactured by bonding a metal mounting bracket to a glass back surface using silicone.
A method of attaching a glass panel to a frame by attaching a metal mounting bracket to the frame is well known as the SSG construction method. Aluminum is used as the material of the metal mounting bracket. Further, when a room-temperature-curable silicone is used as the silicone, a curing period of about 7 to 14 days is required in a room where the room temperature and the humidity are controlled, so that there is a particular problem in productivity.

[0003] Recently, those using thermosetting silicone have been developed in order to improve the adhesive performance and the productivity. The thermosetting silicone is cured in a heating furnace at a temperature of about 90 ° C. to 150 ° C. in about 30 minutes to 2 hours, and becomes a rubbery state, and is remarkably improved in terms of curing time and space.

However, for adhering a member having a thermal expansion coefficient <br/> Ru different called glass and aluminum at high temperature, will remain distorted to a silicone intervening when returned to room temperature, the glass in this effect deformed convex, there is a problem that the reflection Film image is distorted. To get a good reflection image,
You can shorten the length of the adhesive side or increase the thickness of the glass
But shortening the bonding edges may set record limit, increasing the thickness of the glass there is a problem that it is impossible in practice cost increases.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and achieves good reflection without reducing the length of the bonding side or increasing the thickness of the glass.
An object of the present invention is to provide a method for manufacturing a glass panel from which an image can be obtained.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a glass panel for fixing a glass panel to a frame by fixing a metal mounting bracket to the back surface of a glass panel via a thermosetting adhesive. in panel manufacturing method, cross-sectional C
A mold release agent is applied to an elongated metal mounting bracket, and the opening of the metal mounting bracket and the back surface of the body of the glass panel are arranged facing each other, and inside the metal mounting bracket. A thermosetting adhesive is injected, heat-cured to bond the thermosetting adhesive to the back surface of the body of the glass panel, engage the thermosetting adhesive with the metal fitting, and then This is a method for manufacturing a glass panel in which a mounting bracket is slid in the longitudinal direction.

A description will be given below with reference to the drawings. FIG. 1 is a perspective view of a glass panel manufactured according to the present invention. In the figure, 1 is a main body, 2 is a metal mounting bracket, and 3 is a thermosetting adhesive such as thermosetting silicone. The metal mounting bracket 2 fixed to the back surface of the main body 1 has an elongated shape. Its cross-section has two C-shapes, each having an opening outside, and an integrated shape.

[0008] In the opening of this one, thermosetting adhesive material 3 Ru filled. The other opening is for engaging the skeleton. The other opening may have a cross-section other than the C-shape, for example, a π-shape, as long as it can be engaged with the skeleton. In addition, the length of the metal fitting 2 is substantially the same as the length of a vertical side of the panel when the glass panel is constructed.

Aluminum, stainless steel, iron or the like is used as a material of the metal mounting member 2 . Among them, aluminum is particularly preferable because it can be formed by an extrusion method excellent in productivity.

First, a mold release agent is applied to the inner surface of the metal fitting 2 which is to be filled with the thermosetting adhesive.
The release agent is not particularly limited, and is a thermosetting adhesive.
As a release agent for use, those conventionally used can be used.

Next, the metal mounting member 2 is arranged so that the opening of the portion where the release agent is applied faces the back surface of the main body 1. Normally, when a panel is constructed, two metal fittings 2 are arranged on a peripheral edge which is in a vertical direction. At this time, the metal mounting bracket 2 is adhered to the main body 1 by the adhesive tape 4 and temporarily fixed.

Next, a thermosetting adhesive 3 is filled in a space formed by the metal fitting 2 and the main body 1 . The thermosetting adhesive 3 is not particularly limited, and those conventionally used can be used. Next, this is held at the curing temperature of the thermosetting adhesive 3 for a predetermined time, and the thermosetting adhesive 3
Ru is cured. The temperature and time are 90 to 1 respectively.
50 ° C., about 0.5 to 2 hours. In this state, distortion due to the difference in thermal expansion between the metal mounting bracket 2 and the thermosetting adhesive 3 remains.

[0013] Then, only the metal mounting bracket 2 in the longitudinal direction (e.g., about 1 to 3 cm) after sliding, by returning to the original position, the metallic mounting bracket 2
The remaining strain is reduced. In addition, as the main body 1, a rectangular plate glass having a thickness of 6 to 19 mm and a side length of about 1000 to 2000 mm is exemplified. Further, as the sheet glass, a wide range of glass such as heat ray reflection glass and heat ray absorption glass can be used. In particular, the present invention is particularly effective for heat ray reflective glass since reflected images appear strongly.

[0014]

EXAMPLE A metal fitting 2 was temporarily fixed to an 8 mm-thick heat ray reflective glass as the main body 1 by using a foam with a double-sided tape named Thermal Bond as an adhesive tape 4 . Metal mounting bracket 2, Ru aluminum extrusions der cross-sectional shape shown in FIG. The bonding side length of the glass is 1500 mm. In the metal mounting bracket 2 ,
The release agent is carefully applied so as not to adhere to the silicone.

[0015] Then the glass, the space that will be formed from a foam and a metal mounting member with double-sided tape, were injected thermosetting silicone that Toshiba Silicone X0208. The glass panel was placed in a heating furnace and kept at 100 ° C. for 90 minutes to cure the silicone. After curing the panel,
Apart front and <br/> approximately 40m of gratings depicted grid board 200mm angle is facing, reflection grating reflection in the glass surface movies
I examined the image . Glass, on the opposite side to the fixed surface of the metal mounting bracket, and deformed by the central portion of the adhesive side in a convex shape,
In the image, the center of the grid was bulging left and right.

Next, the panel is placed on a table , and the panel is
Fixed to the table . Next, look in the surrounding silicone emissions Note in hole section
The released silicone was removed, and the metal fitting was slid 1-2 cm in the longitudinal direction, and then returned to the original position.
At that time, the metal fitting was able to slide with a load of about 350 kgf to 550 kgf. Thereafter, when the reflection image was reconfirmed, the reflection image was good.

[0017]

According to the present invention, a good reflection image can be obtained without increasing the thickness of a glass panel having a relatively large size.

[Brief description of the drawings]

FIG. 1 is a perspective view of a glass panel manufactured according to the present invention.

[Explanation of symbols]

 1: body 2: metal mounting bracket 3: thermosetting adhesive

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04C 2/38 E04B 2/56-2/72 E06B 3/54-3/88

Claims (1)

(57) [Claims] 1. A glass panel for fixing a metal fitting to a back surface of a body of a glass panel via a thermosetting adhesive, and attaching the glass panel to a body using the metal fitting.
In the method of manufacturing , having a C-shaped cross section, a mold release agent is applied to an elongated metal fitting, and the opening of the metal fitting and the back surface of the main body of the glass panel are arranged to face each other, A thermosetting adhesive is injected into the metal mounting bracket, and is thermoset to bond the thermosetting adhesive to the back surface of the glass panel body and to connect the thermosetting adhesive to the metal mounting bracket. And
Next, a method of manufacturing a glass panel in which a metal mounting bracket is slid in the longitudinal direction.