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1. (WO2013161651) METHOD FOR MANUFACTURING STRENGTHENED GLASS SUBSTRATE

Pub. No.:    WO/2013/161651    International Application No.:    PCT/JP2013/061443
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Fri Apr 19 01:59:59 CEST 2013
IPC: C03C 21/00
C03C 3/083
C03C 3/085
C03C 3/087
Applicants: ASAHI GLASS COMPANY, LIMITED
旭硝子株式会社
Inventors: HORI, Junji
堀 順士
Title: METHOD FOR MANUFACTURING STRENGTHENED GLASS SUBSTRATE
Abstract:
Provided is a method for manufacturing a strengthened glass substrate, said method comprising a chemical strengthening step for contacting a glass substrate with a molten chemical strengthening salt liquid in a first tank, a cooling step for contacting the glass substrate having been treated in the chemical strengthening step with a molten chemical strengthening salt liquid in a second tank, and a draining step for draining off the molten chemical strengthening salt liquids sticking to the surface of the glass substrate, characterized in that: the molten chemical strengthening salt liquids in the first tank and in the second tank comprise chemical strengthening salts having substantially the same chemical composition; the temperature (T2) of the molten chemical strengthening salt liquid in the second tank is lower than the temperature of the molten chemical strengthening salt liquid in the first tank and satisfies the requirement Tmp