TW201903853A - A method of gluing double-layer glass - Google Patents

Abstract

A method of gluing double-layer glass, the method comprising a preheating step and a laser heating step. The prehearing step: heating two pieces of glass and a glass glue which is between two pieces of glass, so as to raise the temperature of two pieces of glass and the glass glue to a predetermined temperature. The laser heating step: irradiating the glass glue with laser, so as to raise the temperature of glass glue to a melting temperature.

Description

 Double-layer glass bonding method  

The invention relates to a method for preparing glass, in particular to a method for bonding double-layer glass.

Nowadays, the common method for bonding double-layer glass is to apply glass glue between two pieces of glass, and then two pieces of glass and glass glue are placed together in a baking furnace for heating, so that the glass glue reaches a molten state. In turn, the two pieces of glass are glued together. However, when this method is applied to tempered glass, the strength of the tempered glass will be significantly lowered while the glass sizing is in a molten state, and the problem of "retraction strengthening" occurs. Therefore, it is an urgent problem for the relevant manufacturers to carry out the rubber bonding industry of two sheets of tempered glass while ensuring the strength of the tempered glass.

Accordingly, the inventors have diligently studied and cooperated with the application of the theory, and proposed a present invention which is rational in design and effective in improving the above problems.

The main object of the present invention is to provide a double-glazing bonding method for solving the problem of directly strengthening two sheets of tempered glass coated with glass glue in the prior art so that the glass glue is melted, which will make the strength of the tempered glass. The problem of falling.

In order to achieve the above object, the present invention provides a method for bonding double glazing, which is suitable for bonding two tempered glass. The bonding method of the double glazing comprises: a preheating step and a laser heating step. Preheating step: heating two sheets of tempered glass and a glass glue between two sheets of tempered glass to raise the temperature of the two sheets of tempered glass and glass glue to a predetermined temperature. Laser heating step: irradiating the glass glue with a laser light to change the glass glue from a predetermined temperature to a melting temperature to be converted into a molten state, and the glass glue which is in a molten state can be bonded to the two sheets of tempered glass; wherein, the tempered glass The efficiency of absorbing laser light is lower than the efficiency with which glass glue absorbs laser light.

The beneficial effects of the present invention may be that since the efficiency of absorbing the laser light by the tempered glass is lower than the efficiency of absorbing the laser light by the glass ray, when the tempered glass and the glass smear are irradiated by the laser light, the temperature rise of the glass glue is significantly faster than that of the tempered glass. In this way, the glass paste can be brought into a molten state when the temperature of the two sheets of tempered glass is less than the temperature at which the strengthening is strengthened; that is, the bonding method of the double glazing of the present invention can avoid the problem that the tempered glass is retracted and strengthened. In addition, the method of heating the glass glue by the laser light has the effect of greatly reducing the heating cost, the energy consumption, and the time saving compared to the method of heating by the baking oven.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

S1~S3‧‧‧ Process steps

FIG. 1 is a schematic flow chart of a method for bonding double glazing according to the present invention.

2 is a schematic flow chart of another embodiment of a method for bonding double glazing according to the present invention.

The following describes an embodiment of the method for bonding a double glazing of the present invention by a specific specific example, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in the specification. The present invention may be embodied or applied in various other specific embodiments, and various modifications and changes may be made without departing from the spirit and scope of the invention. Further, the drawings of the present invention are merely illustrative, and are not depicted in actual dimensions, that is, the actual dimensions of the related structures are not reflected, which will be described first. The following embodiments are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

Please refer to FIG. 1 , which is a schematic flow chart of a method for bonding double glazing according to the present invention. As shown in the figure, the double-glazing bonding method comprises the following steps: Preheating step S1: heating two sheets of tempered glass and a glass glue between the two tempered glasss to heat the two sheets of tempered glass and glass glue to a predetermined temperature; and a laser heating step S2: irradiating the glass glue with a laser light to change the glass glue from a predetermined temperature to a melting temperature to be converted into a molten state, and the glass paste which is in a molten state can be combined with two pieces. The tempered glass is bonded to each other; wherein the tempered glass absorbs the laser light less efficiently than the glass reinforced plastic absorbs the laser light.

In practical applications, the predetermined temperature is lower than the de-intensification temperature of the tempered glass, that is, the strength of the tempered glass does not change drastically at the predetermined temperature, and the tempered glass does not retreat. The problem. Taking the tempered glass which is common in the market as an example, the de-intensification temperature is about 400 ° C to 450 ° C, and the predetermined temperature in the above step S1 is preferably 270 ° C to 280 ° C.

The actual implementation of the step S1 may be, for example, placing two sheets of tempered glass coated with glass glue in a baking furnace, and heating the two sheets of tempered glass and glass glue to the predetermined temperature by means of hot air circulation. Of course, depending on the actual production requirements, it is not limited to using the baking oven to perform step S1.

The wavelength of the laser light in step S2 may be between 800 nm and 1500 nm, but not limited thereto. When the step S2 is actually performed, the difference between the melting temperature and the preheating temperature is not more than 350 ° C, whereby the tempered glass and the glass paste can be effectively prevented from being broken due to excessive temperature difference. problem. In practical applications, in the process of step S2, the baking furnace may be used to control the temperature of the tempered glass, and the temperature of the tempered glass is maintained at a temperature difference of not more than 350 ° C from the glass glue.

In particular, if the two sheets of tempered glass and glass glue are not heated to a predetermined temperature and the glass glue is directly heated by the laser light, the temperature difference between the tempered glass and the glass paste is too large, which may result in Strengthening the problem of cracking of glass. Therefore, in the bonding method of the double glazing of the present invention, through the cooperation of the step S1 and the step S2, the problem that the tempered glass is broken due to the excessive temperature difference with the glass glue can be effectively prevented when the glass paste is heated by the laser light. .

In practical applications, the related equipment for generating laser light may be disposed adjacent to the baking furnace, and the laser light may be directly injected into the baking furnace to heat the glass glue disposed in the baking furnace, thereby In the process of performing step S2, the baking oven can adjust the temperature of the two sheets of tempered glass in time to avoid excessive temperature difference between the tempered glass and the glass glue.

It is worth mentioning that in step S2, if the glass glue is heated by infrared rays, the glass glue will easily generate bubbles, and if the glass glue is heated by the laser light, the glass glue is less likely to generate bubbles. In addition, the present invention utilizes laser light to heat the glass glue, and the glass glue can be brought into a molten state with relatively low energy consumption and relatively low time. For example, when the glass glue passes through step S1 and the temperature reaches 275 ° C, the glass glue of the local area is heated by 50 watts of laser light (wavelength 808 nm), which takes only 50 to 60 seconds. The temperature of the glass glue rises to 600 ° C, and the glass glue is brought into a molten state. In contrast, under the same environmental conditions, if the glass glue is heated by microwave, it may take 10,000 watts of power to make the glass glue reach a molten state, and when it is heated by a baking oven, there will be tempered glass. The problem of retreating strengthens, and the baking oven heats the glass glue from 275 ° C to 600 ° C, and also requires at least 100 watts of power.

Please refer to FIG. 2 , which is a schematic flow chart of a second embodiment of a method for bonding double glazing according to the present invention. As shown in the figure, the difference between the embodiment and the foregoing embodiment is that after the laser heating step, a vacuuming step may be included: the space between the two sheets of tempered glass is evacuated to make two pieces. The space between the tempered glass appears to be in a vacuum state. In other words, the bonding method of the double glazing of the present invention can be applied to the production of vacuum glass, and is not limited to the production of the insulating glass; of course, it can also be directly applied to the direct bonding of two tempered glass. It is worth mentioning that due to the irradiation position, illumination range, moving path and power of the laser light, it can be easily adjusted according to the user's needs. Therefore, the relevant production personnel can accurately compare the vacuum glass or the insulating glass. The glass glue is heated.

In summary, the bonding method of the double-layer glass of the present invention can be performed by first heating two sheets of tempered glass and glass glue, and then heating the glass glue by using laser light, which can use relatively low energy consumption and relatively relatively high energy consumption. In a small amount of time, the bonding of the two sheets of tempered glass is carried out, and the problem that the tempered glass is broken or retracted during the bonding process can be effectively avoided.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by the present invention and the contents of the drawings are included in the scope of the present invention.

Claims (8)

 A double-layer glass bonding method suitable for bonding two sheets of tempered glass, the double-layer glass bonding method comprising: a preheating step, two sheets of the tempered glass and two sheets of the tempered glass a glass glue is heated to heat the two sheets of the tempered glass and the glass glue to a predetermined temperature; and a laser heating step, the glass glue is irradiated with a laser light to make the glass glue The predetermined temperature is raised to a melting temperature to be converted into a molten state, and the glass paste exhibiting the molten state can be bonded to the two sheets of the tempered glass; wherein the tempered glass absorbs the laser light The efficiency is lower than the efficiency with which the glass glue absorbs the laser light.    The method for bonding a double glazing according to claim 1, wherein the predetermined temperature is lower than a de-intensification temperature of the tempered glass; wherein the tempered glass has a temperature higher than the de-intensification temperature, the strengthening The strength of the glass will decrease.    The method of bonding a double glazing according to claim 1, wherein the preheating step is to heat the two sheets of the tempered glass and the glass paste by a hot air circulation through a baking oven.    The method for bonding a double glazing according to claim 1, wherein after the laser heating step, a vacuuming step is further included: evacuating a space between the two sheets of the tempered glass to make two pieces The space between the tempered glass is presented in a vacuum state.    The method of bonding a double glazing according to claim 1, wherein the laser light has a wavelength of from 800 nm to 1,500 nm.    The method of bonding a double glazing according to claim 1, wherein the difference between the melting temperature and the preheating temperature is not more than 350 °C.    The method of bonding a double glazing according to claim 1, wherein in the laser heating step, the temperature of the two sheets of the tempered glass is maintained at a temperature difference of not more than 350 ° C from the glass paste.    The method of bonding a double glazing according to claim 7, wherein in the laser heating step, two sheets of the tempered glass are disposed in a baking furnace, and the baking furnace makes two sheets of the tempered glass The temperature difference from the glass paste is maintained at a temperature of not more than 350 °C.