Method for manufacturing vacuum glass

Abstract

A manufacture method of vacuum glass belongs to the glass manufacturing technology field, including steps as follows: a piece of sheet glass and a piece of convex glass are cut according to requirement, and edging process is implemented according to requirement; a lined adhesive glass film is adopted to overlap the surrounding edges of the sheet glass and the convex glass and then is put on a glass fixture into a vacuum lined adhesive furnace, which is pumped to be vacuum. The furnace is heated for 1-3h at 140-160 degree Celsius to fuse the glass and the film; the glass is taken out of the furnace after being cooled naturally, and protective sealant is used to seal and reinforce the vacuum glass. The production process of the invention is easy to be operated and is constructed through connecting the convex glass and the sheet glass directly, which leads to the more stable support in the hollow region of the two-layer glass. The lined adhesive glass film adopted for the sealing of the surrounding edges has the advantages of strong heat resistance and cold resistance and high mechanical strength and can keep various physical performance indexes within the range of 40 degree Celsius subzero to 120 degree Celsius above aero stable. Vacuum glass can be pumped sealed in batches to realize the highly efficient production.

Description

technical field [0001] The invention belongs to the technical field of glass product manufacturing, and in particular relates to a method for manufacturing vacuum glass. Background technique [0002] Vacuum glass has low heat transfer coefficient and excellent heat and sound insulation properties. There is a huge demand in some fields, especially in the application of architectural door and window glass, but some technologies and processes are not conducive to rapid industrial production. Such as the patent No.: 200420109208.9 Chinese patent discloses flexible support vacuum glass, the middle layer adopts a support, and adopts a composite glass sealant to seal. Generally, its products can only be used for insulating glass, and glass sealant products are used on the edge sealing structure of vacuum glass, and the air permeability is difficult to guarantee at 10 -8 On the pa·L / S level. And because it adopts an air extraction device on the glass surface, its manufacturability...

AI Technical Summary

Problems solved by technology

This method requires the vacuum chamber to be heated to 200-400°C, and the welding temperature to reach 380-480°C, which greatly consumes energy and cannot use tempered glass for vacuum processing.

In addition, the processes of assembling, vacuuming, and sealing are all concentrated in a small vacuum chamber. This method of combining pieces of glass in a vacuum chamber by controlling machinery has low production efficiency.

Another example is the patent No.: 02129540.9 Chinese patent discloses a peripheral sealing device and sealing method of high heat insulation and high sound insulation vacuum glass, which is characterized in that the periphery adopts low melting point glass solder to seal, and the glass surface adopts an air extraction device. The manufacturability of edge banding is not good, manual operation is required for air extraction, and it is difficult to mass produce at high speed

Images