In the past decade, with the continuous development of building energy conservation work, the use of insulating glass has increased exponentially year by year. Insulating glass production has gradually developed from the early manual production to the present semi-automatic or automatic production, production capacity, technical level and quality level have made great progress. What are the production modes of insulating glass? What are the specific production processes? How to produce qualified products through effective quality control, and then the Eurasia small series will take you to see what is going on.
The process flow
At present, the general technological process of insulating glass in China is: Glass cutting →the original low-E glass film removal → cleaning and air drying → observation table inspection → spacing strip frame making → molecular sieve washing → coating a butyl glue → adding frame → sheet bonding (pressing) → sealing two structural adhesives.
General insulating glass production and processing mainly by material and process control to achieve the purpose of producing qualified products. The original piece, spacer, one butyl glue, desiccant, two structural glue are the main materials of general insulating glass, and the quality of the materials should be tested before production.
The first step is to check the original piece, check the size specification, bending degree, scratch, diagonal and other indicators of the original piece, each of which corresponds to the mass point. For example, the bending degree of glass is generally controlled within 3mm. If the original glass bending exceeds the standard, it will cause a series of problems such as scratches, crashes, and bounces off after sealing during the online production, which will cause trouble in the process production control of raw materials. The inspection of the interval bar is mainly the selection of the same type as the processing sheet, the selection of 6mm, 9mm, 12mm and other width specifications, and the use of aluminum bar, warm edge bar, stainless steel bar and other kinds of interval bar.
Key Points of quality control
If according to the production process, each process point has a corresponding quality control point, each quality control point also reflects the operation of hollow equipment, so as long as these quality control points are strictly controlled, we can produce high-quality hollow glass.
- Deep film removal
First, according to the sealing depth of the two structural adhesives, the low-E will be removed. It is mainly to control the width of the film, from the beginning of the film to the end of the film, in addition to the width of the film error to be within 0.5mm, otherwise in the frame station will cause the width of the film pressure and white and other problems. The second is to avoid the film glass in addition to the film is not clean, touch scratch film surface, in addition to the film wheel in addition to the glass and other problems. - Cleaning and drying
Second, when cleaning and drying the glass, because of the use of spray water brush rolling to scrub the glass, there are often brush wounds and watermarks on the membrane surface, and the air drying section of the rear driving fan often has wind knife marks, wheel marks, belt marks and scratches and other quality problems. Therefore, the personnel in this position must be seriously responsible. - Quality inspection review
It is mainly to check the quality of film removal and cleaning, and find the quality problems of film removal and cleaning as soon as possible through special quality inspection boxes. And in the observation table to complete the framework, the unqualified products will be screened out. - Make the interval frame
The insulating glass spacer is processed according to the spacer specification, material and size required by the process card. In the process of frame making, it is easy to have some quality problems, such as inaccurate frame making, corner bending and rounding, surface stain of spacer strip, connector not in place, interface deformation of spacer strip and big burr of the saw blade. Therefore, the process must be strictly in accordance with the standard.
- Interval strip filling dryer
This process is filled with molecular sieve in the interval. Generally within 15 minutes, the filling desiccant interval strip completed insulating glass sheet, to prevent molecular sieve failure. During the irrigation period, there will be quality hidden dangers such as insufficient irrigation, incomplete glue plugging of the irrigation mouth and deformation of the interval bar by the irrigation machine. This link is the key to affecting the quality of the whole insulating glass.
- Coating a layer of butyl glue
This process must pay attention to the quality of butyl rubber coating on both sides of the interval strip, generally to use the pressing quality of the sheet machine to judge the coating situation of the butyl rubber machine, the width of the butyl rubber after pressing is greater than 5mm. Butyl rubber machine coating should also pay attention to the wave coating, glue breaking and the residual glue on the front of the spacer do not fit into the insulating glass.
7. Adding frame
The insulating glass process is carried out together with the observation and inspection, and the inspected glass and spacer are installed together. During this period, we should pay attention to the pressing film of the frame and the situation of white exposure. If there is any problem, we should timely feedback to the first few stations, and immediately correct to prevent the production of nonconforming products, so we must cooperate closely with each process.
- Sheet pressing
In this process, two or more single pieces of glass are joined together with spacer strips. After strict inspection of the incoming material in front of the piece, there will be quality hidden trouble caused by the piece station, such as the variation of the interval strip after the piece, the piece dislocation, butyl rubber pressure width is less than 5mm, butyl rubber virtual joint, panel scratch and a series of quality problems. It is necessary to timely adjust the equipment according to the actual situation after closing the piece, so that it can meet the processing requirements of each size of the glass.
- Sealing side After a comprehensive inspection of the situation of the side seal, coated with a second sealant. According to the proportion provided by the glue factory for mixing, so as to meet the specified use requirements; According to the requirements of the process card, the rubber type, sealing depth to operate, to control the uniformity of the rubber mixing, sealing gas line, sealing wave and other quality issues. Must be in strict accordance with the use of the original factory requirements, when necessary to get contact with the original factory and technical support.
The above 9 requirements are the simple technological process of the production and processing of general insulating glass. Only in the technological process, each quality point is strictly and effectively controlled, and on-site management and supervision are done well. And in accordance with the normal process of correct operation, we can reduce the risk and cost of quality control in all aspects, and produce high-quality insulating glass products, so that customers are satisfied. The ingredients of the above process, it is recommended that we must use the products of regular manufacturers, such as aluminum bars and sealant products, which seriously restrict the quality and level of insulating glass products. Strict and regular factories can bring better service and quality.
