| 摘要 |
PURPOSE: To obtain excellent impact resistance in addition to optical and thermal characteristics, in a pane consisting of one glass plate and one plastic sheet, by setting light transmittance TLA, energy transmittance TE, a TLA/TE ratio, transmittance TUV and the thickness of the pane to specific values. CONSTITUTION: A pane is constituted of two glass plates and one plastic sheet. One of or both of the glass plates are produced from silica-soda-lime glass of which the whole is colored by iron oxide and have infrared absorbing function. This colored glass is combined with a colored intermediate sheet to be set to below 60% in light transmittance. Further, the colored intermediate sheet has energy transmittance TE so as not only to impart ultraviolet transmittance TUV of below 0.5% to the pane but also to set a TLA/TE ratio larger than 1 to the pane. The whole thickness of the pane is set to 2.5-8 mm. |
