| 摘要 |
<p>An insulating glass unit comprising a pair of generally parallel, spaced apart glass panes (18, 20) and a spacer-sealant assembly peripherally joining the glass panes to one another and defining with the glass panes a gas-containing interpane space. The spacer (10) comprises a first web (12) whose edges are joined to confronting surfaces (14, 16) of the glass panes (18, 20) by primary sealant strips (24), the first web (12) and sealant (24) providing a barrier having a permeance to air and interpane gas of not greater than about 0.06 cubic inches/year-inch-atm. and providing a first thermal path having a thermal resistance of not less than about 8 hr- DEG F-ft/Btu. The unit may have a peripheral structure or second web (30) providing a separate parallel thermal path having a thermal resistance no less than about two and one-half times that of the first thermal path.</p> |
