Method for sealing vacuum glass by using polyethylene hot-melt adhesive films for adhesion

Abstract

The invention discloses a method for sealing vacuum glass by using polyethylene hot-melt adhesive films for adhesion. The method comprises the steps of: preparing the hot-melt adhesive films, cutting an upper flat glass sheet and a low flat glass sheet, clamping aluminum alloy frames between surrounding edges of the upper and lower glass sheets, forming a sealed cavity body through enclosing the aluminum alloy frames, the upper flat glass sheet and the low flat glass sheet, forming an exhausting hole in one aluminum alloy frame, placing hot-melt adhesive film strips on joints between the aluminum alloy frames and the upper and lower glass sheets, clamping through pressurizing, feeding to a heating furnace, keeping the temperature of 110-125 DEG C for 4-5 minutes, taking out and cooling; coating glass cement on junctions between outer sides of the aluminum alloy frames and the glass sheets; and vacuumizing, plugging the exhausting hole, and mounting frames on the periphery of the vacuum glass. According to the method, the prepared hot-melt adhesive films are adopted to seal the glass sheets and the aluminum alloy frames, and the effect is good; and shown by detection on a vacuum glass window which is manufactured by the method and is used more than two years, sealed portions are in good condition and are free of degumming phenomena, the vacuum degree of the interior of an interlayer still maintains a high level, the interior of the interlayer is free of situations, such as condensation and mildewing, and the heat preservation and insulation effects are good.

Description

technical field [0001] The invention relates to a vacuum glass sealing method. Background technique [0002] Vacuum glass, which is composed of multiple glass plates, has attracted people's attention for its excellent sound insulation, heat insulation, and thermal insulation properties, and has been widely used in buildings. In the existing vacuum glass, a circle of aluminum alloy frame is sandwiched between the upper and lower pieces of glass, and most of them are bonded by adhesives. Since there is no special adhesive, after long-term use or harsh environments, The bonding part is easy to fall off, and water vapor will enter the vacuum glass, dew condensation in the interlayer, and glass mildew. Contents of the invention [0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for sealing vacuum glass bonded by polyethylene hot-melt adhesive film, which has simple process, reliable and firm sealing. [0004] Tech...

AI Technical Summary

Problems solved by technology

In the existing vacuum glass, a circle of aluminum alloy frame is sandwiched between the upper and lower pieces of glass, and most of them are bonded by adhesives. Since there is no special adhesive, after long-term use or harsh environments, The bonding part is easy to fall off, and water vapor will enter the vacuum glass, dew condensation in the interlayer, and mildew on the glass