Glazing panels such as vehicle windscreens bonded to a supporting frame are released by firstly arranging light energy delivery means adjacent the panel and subsequently transmitting light energy from the delivery means through the panel thereby to effect release of the panel from the frame. Junction box mounting is popular in North America, whereas cavity mounting is popular in Europe and the Middle East. The sheet has a high friction coefficient so that the peripheral edge of the waist opening is easily and reliably gripped when the garment is pulled on by a wearer. Next, fluorescent powder and liquid macromolecular polymer are mixed up and uniformly coated on the reflecting plate and the UV light sources.