Method and equipment for manufacturing curved glass sheet
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United States of America Patent
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Nov 25, 2014
Grant Date -
Apr 4, 2013
app pub date -
Nov 18, 2011
filing date -
Sep 30, 2011
priority date (Note) -
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Abstract
A method for manufacturing curved glass sheet includes the following: an equipment, including a matching first mold core and a second mold core, is provided; a raw glass sheet is provided and placed on the second mold core covering second mold cavity; a pressure is controlled in the first and second mold cavities to a first pressure; the mold cores are closed and heated, to raise the raw glass sheet to a temperature of about glass transition temperature of raw glass sheet; a gas is supplied into the first mold cavity to raise the pressure in the first mold cavity to a second pressure which is greater than first pressure, in which the raw glass sheet is bent to the second forming surface of second mold core under pressure; mold cores are opened and cooled down to obtain the curved glass sheet.
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