| 摘要 |
PURPOSE:To produce a laminated glass free from delamination, foaming, cracking or strain, by bending a pair of glass plates to a definite angle at the same time, and bonding the glass plates interposing a specific plastic interlayer therebetween. CONSTITUTION:A pair of glass plates 1, 2 cut to a definite shape are stacked. The bending lines 6 formed between the center part 3 and the front and side parts 4, 5 are heated locally with a heater, and the side parts 5 are bent at the same time to a definite angle alpha. A plastic interlayer satisfying the formulas t1{sin(90 deg.-alpha)-0.3}<=t2<=t1{sin(90 deg.-alpha)-+0.3} and 15mil<=t2<=t1 wherein t1 and t2 are the thickness of the center part 3 and the side part 5 of the interlayer, respectively, is inserted between the glass plates 1 and 2, heated at 70-90 deg.C in vacuum to effect the deaeration and the preliminary bonding, and then heated at 110-130 deg.C under 8-13atm to effect the main bonding of the glass plates.
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