COMPENSATED MOLDS FOR MANUFACTURING ION EXCHANGE STRENGTHENED, 3D GLASS COVERS

• Main Authors: GAYLO KEITH RAYMOND, RIDGE JOHN RICHARD, UKRAINCZYK LJERKA, SALTZER, JR. JOHN ROBERT, IMMERMAN JACOB, AHMED IZHAR ZAHOOR
• Format: Patent
• Language: English
• Published: 09.06.2016
• Subjects: CALCULATING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

Methods for compensating for the warp exhibited by three-dimensional glass covers as a result of ion exchange strengthening are provided. The methods use a computer-implemented model to predict/estimate changes to a target three-dimensional shape for the 3D glass cover as a result of ion exchange strengthening. The model includes the effects of ion exchange through the edge of the 3D glass cover. In an embodiment, the inverse of the predicted/estimated changes is used to produce a compensated (corrected) mold which produces as-molded parts which when subjected to ion exchange strengthening have shapes closer to the target shape than they would have had if the mold had not been compensated (corrected).