THREE-STAGE FORMING OF GLASS SHEET WITH TRANSVERSE CURVATURE Russian patent published in 2019 - IPC C03B23/03 C03B23/35 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the three-stage formation of a glass sheet with transverse curvature. In the method, the station and the method for forming a glass sheet contain the first and second upper molds and the lower mold to provide a three-stage molding. At the first stage, the glass is curved on the upper mold, but retains straight line elements transverse to the curvature. It is followed by the transfer of the initially formed glass sheet from the first upper mold to the lower mold which then provides the second stage of formation under the action of gravity. In the third stage, the glass sheet is press formed between the second upper mold and the lower mold.

EFFECT: reduction of optical distortion in the central viewing area of the formed glass sheet.

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