INSULATING DOUBLE-GLAZING UNIT AND VACUUM DOUBLE-GLAZING UNIT

摘要

Conventional insulating double-glazing unit and vacuum double-gazing unit do not have sufficient insulating property and the thickness of an insulating/double-glazing unit must be increased to improve the insulating property. The insulating/double-glazing unit according to this invention includes a first vacuum double-glazing unit (2) equipped with two sheets of flat glass (3 and 4) whose peripheries are sealed, which have multi-layered spacers (5) sandwiched between them and whose intermediate part is rendered vacuum, and a second vacuum double-glazing unit (2) or ordinary flat glass (10) whose periphery is sealed by a sealant (12) and which is laminated on the first vacuum double-glazing unit (2) with a gap between them. Because dry air or a rare gas is sealed between these sheets of flat glass, the insulating property can be improved without increasing the overall thickness of the insulating double-glazing unit.