TWI626226B - Process for making vacuum glued glass tightly integrated into one body by using negative pressure and high pressure - Google Patents

Abstract

The present invention is a process for making vacuum glued glass tightly integrated into a whole by using negative pressure and high pressure. The vacuum glass is first covered with a glued material to form a glued layer, and then a flat glass is covered on the glued layer. Form a vacuum glued glass; put the vacuum glued glass into a bag, and evacuate the bag, and use a heating device to control the temperature below the softening temperature of a glued layer to carry out the heating exhaust process; 嗣, The heating temperature is increased above the softening temperature of the glue layer, and at the same time, the external pressure is appropriately increased to pass the pressing force of the bag body, so that the flat glass and the vacuum glass are closely adhered. In this way, through the cooperation of negative pressure and high pressure, the vacuum glued glass can be uniformly forced, which solves the problem that cracks are easily caused when the vacuum glued glass is pressured by a roller in the past.

Description

Process for making vacuum glued glass tightly integrated into one body by using negative pressure and high pressure

The invention relates to a process for making vacuum glued glass tightly integrated into a whole by using a negative pressure method and a high pressure, especially after putting a vacuum glued glass into a bag body, first extracting air to form a negative pressure, and heating the vacuum glued glass. Below the softening temperature of a glued layer, a heating and exhausting program is performed, and then heated to above the softening temperature of the glued layer, and an appropriate high pressure is applied, so that the vacuum glass, the glued layer and the flat glass in the vacuum glued glass can be The pressing force exerted by the bag body facing inwardly fits tightly into one body.

According to the fact, glass is one of the man-made building materials with a long history. In the long-term development process, through different manufacturing methods, different ingredients or different processing methods, it can produce different physical characteristics, such as: impact resistance, heat resistance, humidity resistance, sound insulation, etc. Therefore, it is widely used in various fields and can be said to be an important material that people can see around their lives. Taking architecture as an example, many buildings use large-area glass to ensure good daylighting. In order to further achieve thermal insulation, most of the current industry will use "vacuum glass" or "multi-layer glass" as building materials to achieve the effect of glass insulation. Among them, "vacuum glass" provides superior capabilities in terms of heat insulation and sound insulation compared to "multilayer glass".

Please refer to FIG. 1, which is a structural diagram of a vacuum glass. The vacuum glass 1 is formed by stacking a first glass 11 and a second glass 12, and the peripheral edges of the opposite sides of the glasses 11 and 12 are coated. There are edge-sealing materials 10, so that the gap between the glass 11, 12 can be formed by suction A vacuum layer 13 and in order to maintain the structure of the vacuum layer 13 and avoid the glass 11 and 12 from being pressed due to atmospheric pressure, a plurality of support columns 101 are still provided between the glass 11 and 12 to support the vacuum. Layer 13.

Although the vacuum glass 1 has good heat insulation and sound insulation effects, when applied to building materials, in order to meet different design requirements (such as: increasing safety and increasing strength to resist wind pressure), the industry often needs to A layer of flat glass is provided to penetrate the flat glass (or a coating film thereon) to increase its physical characteristics. In the past, the glass was bonded to the vacuum glass by "gluing". The steps were to place a resin intermediate film (such as polyvinyl butyral PVB) between the vacuum glass and the glass, and then pass through The pre-pressing procedure (for example: roller heating extrusion, negative pressure heating extrusion) puts two pieces of glass together, but the industry still has to put the pre-laminated glass into an ultra-high pressure heating furnace (such as an autoclave ), In order to eliminate a large amount of air in the resin intermediate film by heating, so that the flat glass and vacuum glass can be combined into a "vacuum glued glass".

The disadvantage of the foregoing method is that when the roller presses the flat glass and the vacuum glass, the support column 101 in the vacuum glass 1 may be broken due to excessive or uneven force, and the particles are peeled off, which not only destroys the vacuum glass. Structure, and it will also affect the overall beauty; however, if the roller is not used, only the principle of negative pressure is used, and the air in the resin interlayer film cannot be fully exhausted, and the vacuum glass and the flat glass cannot be bonded together. The uniformity and flatness of the surface, on the contrary, also cause the problem of poor quality.

Therefore, how to improve the bonding process between the vacuum glass and the flat glass in the conventional manufacturing process so as to take into account the structural strength of the two and the tightness and uniformity of the bonding, has become an important problem to be solved by the present invention.

In view of the fact that in the past when a flat glass was added to the vacuum glass, the support column in the vacuum glass was easily broken during the pressure bonding process, the inventor relied on many years of practical experience, after many experimental studies and After the test, a process of using the negative pressure method and the high pressure to make the vacuum glued glass tightly integrated into one is finally designed, which can effectively solve the problem of applying the conventional manufacturing process to the production of vacuum glued glass.

One object of the present invention is to provide a process for making vacuum glued glass tightly integrated into one body by using negative pressure and high pressure, and applied to a vacuum glued glass. The vacuum glued glass includes a vacuum glass and a flat glass. The vacuum glass includes a first glass and a second glass which are vertically stacked, and the peripheral edges of the bottom surface of the first glass and the top surface of the second glass are combined into a single body through an edge material so that the first glass and the second glass are interposed therebetween. The vacuum gap can form a vacuum layer, and the vacuum layer is provided with a plurality of supporting pillars, and two ends of each supporting pillar are respectively abutted to the bottom surface of the first glass and the top surface of the second glass; Covering the top surface of the first glass with a glue material to form a glue layer; covering the bottom surface of the flat glass to the glue layer so that the vacuum glass, the glue layer and the flat glass can form the vacuum glue glass; Alas, the vacuum glued glass is put into a bag body, and the bag body is provided with at least one air outlet, and the air outlet is connected with the internal space of the bag body; using a negative pressure system, the bag is In the suction state, use a heating device to heat the vacuum glued glass, but keep the heating temperature lower than the softening temperature of a glue layer, and perform a heating exhaust procedure to make the bag body The air inside can be evenly discharged; the heating device is used to increase the heating temperature to above the softening temperature of the glue layer; finally, a pressure device is used to press the bag body and the vacuum glued glass to pass through the The pressing force of the bag body enables the flat glass to be integrated with the first glass. In this way, because the air between the flat glass, the glued layer and the vacuum glass has been removed during the heating and exhausting process, and passes through The high pressure gradually compresses the bag body inward, and then glues it together. Therefore, the problem that the support column in the vacuum glass is broken due to excessive force can be avoided.

In order that the review committee can have a further understanding and understanding of the steps, processes, technical principles and purposes of the present invention, the examples are given in conjunction with the drawings to explain in detail as follows:

[Learning]

1‧‧‧vacuum glass

10‧‧‧Edge banding material

101‧‧‧ support post

11‧‧‧The first glass

12‧‧‧Second glass

13‧‧‧Vacuum layer

〔this invention〕

2‧‧‧vacuum glass

20‧‧‧Edge banding material

201‧‧‧Vacuum layer

202‧‧‧ support column

203‧‧‧Exhaust channel

21‧‧‧The first glass

22‧‧‧Second glass

23‧‧‧ glued layer

24‧‧‧ flat glass

241‧‧‧functional film

3‧‧‧Vacuum glued glass

4‧‧‧ bag body

Figure 1 is a schematic diagram of a conventional vacuum glass; Figures 2A to 2C are schematic diagrams of the process implementation sequence of the present invention; and Figure 3 is a flowchart of the steps of the present invention.

During the research process, the inventor found that in the past, various processes of vacuum glued glass have the same design blind spot. That is, the industry is accustomed to press and adhere the vacuum glass and flat glass first, and then use the autoclave to carry out the entire vacuum glued glass Heat to remove air. Therefore, in the present invention, the inventor has reversed the entire program thinking, and first completed the exhaustion based on the "negative pressure" principle, and then completed the bonding through high pressure. In this way, it can solve the past practice of bonding vacuum glass and flat plates. Excessive pressure on the glass causes structural breakage.

The present invention is a process for making vacuum glued glass tightly integrated into one body by using negative pressure and high pressure. Please refer to Figs. 2A to 2C, which is a schematic diagram of the first preferred embodiment of the process of the present invention. The process is applied to On a vacuum glued glass 3, the vacuum glued glass 3 includes a vacuum glass 2 and a flat glass 24, wherein the vacuum glass 2 includes a first glass 21 and a second glass 22 stacked vertically, and the first glass 21 The periphery of the bottom surface and the top surface of the second glass 22 are integrated into one through an edge material 20, so that the gap between the first glass 21 and the second glass 22 can be shaped. A vacuum layer 201 is formed, and a plurality of support pillars 202 are provided in the vacuum layer 201. Both ends of each support pillar 202 abut against the bottom surface of the first glass 21 and the top surface of the second glass 22, respectively.

An extraction channel 203 can be provided between the first glass 21 and the second glass 22, so that the vacuum glass 2 can be evacuated using an extraction device to form the vacuum layer 201, and then the extraction channel is sealed. 203. Since the manufacturing method of the vacuum glass 2 is not the technical focus of the present invention, it will not be described in detail here. Please refer to FIGS. 2A to 2C and FIG. 3 to describe the process steps of the present invention as follows: (301) The top surface of the first glass 21 is covered with a glue material (such as a resin intermediate film) to form a glue Layer 23, in this embodiment, the area of the glue layer 23 covers the top surface of the first glass 21, but may be larger than the top surface of the first glass 21; (302) the bottom surface of the flat glass 24 is covered to On the glued layer 23, the vacuum glass 2, the glued layer 23 and the flat glass 24 can form the vacuum glued glass 3; (303) As shown in FIG. 2B, the vacuum glued glass 3 is put into a bag The bag body 4 is sealed in the body 4. In this embodiment, the material of the bag body 4 is polyethylene terephthalate (PET or PETE), and the bag is sealed with butyl rubber. At the periphery of the body 4, only one suction port is reserved on both sides, so that the suction port can communicate with the internal space of the bag body 4 for the suction pipe of a negative pressure system to extend in (the bag body 4 can also be adjacent to An air outlet is provided at the position of the peripheral edge, so that after the peripheral edge of the bag body 4 is sealed, the air is exhausted from the air outlet uniformly; (304) As shown in FIG. 2C It is shown that by using the negative pressure system, the air inlet of the bag body 4 is evacuated to reduce the pressure in the bag body 4 to 0-50 kPa (KPa, ideally, the pressure is reduced to 10KPa). At this time, The air in the bag body 4 can start outward due to the negative pressure generated by the vacuum. Discharge; (305) in a suction state, the bag body 4 and the vacuum glued glass 3 are placed in a heating device (such as an autoclave), and the vacuum glued glass 3 is heated and exhausted by using the heating device The procedure is to heat the vacuum glued glass 3, but keep the heating temperature lower than the softening temperature of a glued layer (ie, the temperature boundary that allows the tree glued layer 23 to melt), for example, between 60 and 120 degrees Celsius. At this time, the air in the bag body 4 and the remaining air in the glue layer 23 can be completely and evenly discharged due to the heat and negative pressure; (306) 嗣, raise the temperature of the heating device to the glue Above the layer softening temperature (for example, between 125 and 165 degrees Celsius), so that the adhesive layer 23 can be gradually softened and adhered to the bottom surface of the flat glass 24 and the top surface of the vacuum glass 2; and (307) through a pressure The device raises the external pressure of the bag body 4 and the vacuum glued glass 3, and the pressure strength is the allowable pressure strength of each of the support pillars 202 to perform the bonding process. After being affected by the externally applied high pressure, due to the glued layer 23 has been softened and melted by heat, so through the bag For the pressing force of the body 4, the flat glass 24 can be integrated with the first glass 21 (vacuum glass 2).

In this way, because the process of the present invention first exhausts the internal air through "negative pressure", and then applies an appropriate external "high pressure" to the whole, so that the inner side of the bag body 4 faces the vacuum glued glass 3 inward, so Compared with the conventional method of using roller pre-pressing and autoclave ultra-high pressure to eliminate gas, the invention can not only discharge the air at the same time, uniformly apply force to the whole (because the bag body 4 is in a heated and exhausted state, at the same time Inwardly against the entire outer surface of the vacuum glued glass 3), and in the bonding process, it can also ensure that the pressing force of the bag body 4 is not too strong and cause the support pillar 202 in the vacuum glass 2 to break So that the flat glass 24 can gradually melt after the glue layer 23 is heated and melted. It is pushed inward by the bag body 4 and tightly integrated with the vacuum glass 2 as a whole.

In this embodiment, the heating device and the pressurizing device are respectively arranged in an autoclave (that is, the autoclave has functions of heating and pressing). The autoclave can heat the vacuum glued glass 3 while The bag body 4 and the vacuum glued glass 3 are subjected to pressure treatment. The steps performed in the heating process of the autoclave are described in detail as follows: First, when the bag body 4 is evacuated by the negative pressure system, a negative pressure is formed (that is, In the foregoing step (305)), the autoclave can heat the internal temperature to 60 to 120 degrees Celsius during the heating and exhausting process (ideally, it is heated to 100 degrees Celsius) and last at least 20 to 80 minutes (ideal state 60 minutes).

Alas, in step (306), the autoclave will be further heated to 125-165 degrees Celsius (ideally, it is heated to 145 degrees Celsius), so that the temperature is higher than the softening temperature of the glue layer, and then the bag body 4 and vacuum glue The glass 3 is pressurized to a high pressure state of 0.1 to 0.3 MPa (MPa, ideally 0.2 MPa), and the high temperature and high pressure state are maintained for 40 to 80 minutes (ideally 40 minutes); finally, Through a cooling system (such as water cooling), the temperature is reduced to 30-50 degrees Celsius (ideally, the temperature is reduced to 40 degrees Celsius), and then the internal pressure is released to restore normal pressure.

It should be particularly mentioned here that this procedure is not only applicable to the bonding of single sheet glass and vacuum glass, but also to the bonding of two sheets of flat glass and vacuum glass or the bonding of vacuum glass to each other; in addition, Please refer to FIG. 2C, the flat glass 24 may be a processed coated glass, that is, the top surface thereof can be coated with a functional film layer 241, such as an anti-corrosion layer, a metal isolation layer, an infrared reflective layer, etc., but The plate glass 24 is not limited to the coated glass, but it is aged for the first time.

The above description is only one preferred embodiment of the present invention, but the technical features of the present invention are not limited to this. After those skilled in the relevant technical field have considered the technical content of the present invention, Equivalent changes that can be easily considered should not depart from the protection scope of the present invention.

Claims (3)

A process for making vacuum glued glass tightly integrated by using negative pressure and high pressure is applied to a vacuum glued glass. The vacuum glued glass includes a vacuum glass and a flat glass. The vacuum glass includes a vertical stack. The first glass and the second glass, and the peripheral edges of the bottom surface of the first glass and the top surface of the second glass are integrated through an edge material, so that the gap between the first glass and the second glass can form a vacuum Layer, and the vacuum layer is provided with a plurality of support columns, and two ends of each support column are respectively abutted to the bottom surface of the first glass and the top surface of the second glass; the manufacturing process includes the following steps: The top surface of the glass is covered with a glue material to form a glue layer; the bottom surface of the flat glass is covered on the glue layer, so that the vacuum glass, the glue layer and the flat glass can form the vacuum glue glass; the vacuum glue The glass is placed in a bag body, and the bag body is provided with at least one air suction port, which is connected with the internal space of the bag body; using a negative pressure system, the air suction port of the bag body In the state of air extraction, the vacuum glued glass is heated by a heating device, but the heating temperature is kept lower than a softening temperature of the glued layer, and a heating exhausting process is performed to make the air in the bag body It can be evenly discharged; the heating device is used to increase the heating temperature to above the softening temperature of the glue layer; and a pressurizing device is used to increase the external pressure of the bag body and the vacuum glued glass to penetrate the pressure of the bag body Tightly make the flat glass and the first glass stick together. The process according to claim 1, wherein after the negative pressure system evacuates the bag body, the pressure in the bag body is reduced to 0-50 kPa. The process according to claim 1 or 2, wherein the heating device and the pressure device are set in an autoclave, the autoclave can heat and pressurize the vacuum glued glass, and the steps performed by the autoclave Including: in the heating and exhausting program, the temperature is heated to 60 to 120 degrees Celsius for 20 to 80 minutes; 嗣, heated to 125 to 165 degrees Celsius, so that the temperature is higher than the softening temperature of the glue layer, and then pressurized To 0.1 to 0.3 MPa for 40 to 80 minutes; and after cooling to 30 to 50 degrees Celsius, the pressure is released to normal pressure.