ARRANGEMENT FOR RESTRICTING THE TRANSMISSION OF ELECTROMAGNETIC RADIATION

摘要

A method is described for manufacturing a heat insulating window glass units which comprise two or more glass panes and at least one spacer frame element sized to follow the border of the panes with the frame element placed between each pair of inner surfaces of the panes facing each other to form inner spaces between the surfaces. The method includes providing a gas mixture by chosing, among gases having a high absorption of electromagnetic radiation in the wave-length field of 2-25 mu m, and having a transparency without noticeable negative influence on visible light, a first gas having one or more absorption bands for infra-red radiation and chosing a second gas having one or more absorption bands for infra-red radiation with the bands being positioned in said region at other positions than the bands of the first gas, and chosing a third gas having one or more absorption for infra-red radiation the bands being positioned in said field in other positions than the absorption bands of the first and second gases and so on until a substantial part of the infra-red region in said wave length region is covered by said absorption bands of the gases chosen; mixing the gases chosen. The gases chosen are mixed and the mixture is inserted into said spaces whereupon the spaces are sealed.