| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-pressure plural layer glass panel having excellent heat insulating performances without damage of film even in a plate glass provided with a specific metal film of low normal emittance, by laying a dotted, linear or netlike spacer between two sheets of plate glass and sealing the peripheral part with a sealing material composed of an organic polymer-based material to form a low-pressure space between the two sheets of the plate glass. SOLUTION: Preferably one of two sheets of plate glass is plate glass of low irradiation glass coated with a specific metal film so as to improve heat insulating performances. A material for a spacer for maintaining a gap between two sheets of plate glass is preferably a metal, a ceramic or a plastic having a lower hardness than glass and proper compression strength. A sealing material for the peripheral part is an organic polymer material such as a polyisoprene, silicone, polyamide, etc., satisfying conditioning of water vapor transmission rate and oxygen permeability. Especially when a low-molecular weight material is released, an adsorbent such as a silica gel, activated carbon or activated soil is added to the organic polymer material. The gap between the sheets of the plate glass is 0.5-2 mm. |
