METHOD OF MANUFACTURING COVER GLASS PLATE
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United States of America Patent
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Issued Date -
Sep 25, 2014
app pub date -
Sep 21, 2012
filing date -
Dec 15, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Method of manufacturing cover glass plate includes drop step, press step and processing step. In the drop step, molten glass is dropped onto lower mold. In the press step, the molten glass on the lower mold is pressed with upper mold having concave portion so as to fill the concave portion of the upper mold with the molten glass and furthermore, the concave portion is overlapped to area between the upper mold and the lower mold so as to form preform formed with molded main body having first surface to which the shape of the concave portion of the upper mold is transferred and overlap portion having second surface which is portion other than the molded main body and to which the shape of the lower mold is transferred. In the processing step, all the overlap portion is removed from the preform.
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