Swisspacer Air

How it works:

Altitude differences and climate loads lead to the build-up of overpressure or underpressure in the insulating glass. The resulting stresses can lead to glass breakage and premature aging. With Swisspacer Air, these stresses are greatly minimized, so that critical conditions no longer arise.

Standard insulating glass is usually a hermetically sealed system: the air mass enclosed in the space between the panes during manufacture remains intact. If the temperature or external air pressure changes, the system reacts with positive or negative pressure. The resulting glass deformation puts stress on the glass and the edge seal. If these stresses are too great, the glass will break. The expansion of the edge seal can also cause premature aging of the insulating glass.

Swisspacer Air creates a pressure-relieved insulating glass in which these stresses are significantly reduced, minimizing the risk of glass breakage.

Functionality

The graphic shows the function of Swisspacer Air by way of example. The grey line illustrates the rise in flexural tensile stress during transport to a higher location; following installation, pressure and flexural tensile stress remain constant. The orange line illustrates how the constant, slow pressure equalisation with Swisspacer AIR decelerates the increase in flexural tensile stress during transport. Once a window is installed, AIR ensures steadily advancing pressure equalisation. In the example, the critical flexural tension is not exceeded at any time.