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US06014873A Process for bend-shaping a glass plate and an apparatus for bend-shaping the glass plate 失效
用于玻璃板弯曲成形的方法和用于弯曲成形玻璃板的装置

Process for bend-shaping a glass plate and an apparatus for bend-shaping
the glass plate
摘要:
A process for bend-shaping a glass plate by heating the glass plate to a softening temperature of the glass plate, while the glass plate is transferred along a transferring surface in a shaping furnace. The glass plate is transferred along a complex bending transferring surface having a complex curved face which is upwardly projected with predetermined radius of curvatures along both the axis of the transferring direction and the axis perpendicular to the transferring direction. The transferring surface having an upward gradient portion at at least an area near the exit of the shaping furnace, to thereby bend the glass plate into a shape which substantially corresponds to that of the complex bending transferring surface, and then, the glass plate being cooled and strengthened along a cooling transferring surface which has a complex curved face so as to be substantially continuous to that of the complex bending transferring surface and which has at least a downward gradient portion in at least a part of the cooling transferring surface.
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