Invention Grant
US09452948B2 Three stage forming station and method for forming a hot glass sheet with transverse curvature 有权
用于形成具有横向曲率的热玻璃板的三段成型台和方法

Three stage forming station and method for forming a hot glass sheet with transverse curvature
Abstract:
A glass sheet three stage forming station utilizes first and second upper molds and a lower mold to provide three stage forming. The glass is curved on the upper mold in the first stage but retains straight line elements transverse to the curvature. Transfer of the initially formed glass sheet from the first upper mold to the lower mold then provides the second stage of gravity forming and the glass sheet is then press formed between the second upper mold and the lower mold in the third stage which reduces optical distortion in the central viewing area of the formed glass sheet. The glass sheet is moved horizontally on the first upper mold and released onto the lower mold.
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