DOUBLE GLAZING

摘要

A double glazing unit has a pair of glass sheets (1, 2), with a frit seal (3) therebetween, the frit seal being fused to both sheets and extending around the periphery of the unit. The frit seal is fused by irradiation with light 4 from a laser. Typically, the frit is of brown glass, whereby it readily absorbs heat on laser irradiation.