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1. (WO2018124084) GLASS PLATE FOR CHEMICAL TEMPERING AND METHOD FOR PRODUCING CHEMICALLY TEMPERED GLASS PLATE

Pub. No.:    WO/2018/124084    International Application No.:    PCT/JP2017/046679
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 27 00:59:59 CET 2017
IPC: C03C 21/00
C03C 3/083
G06F 3/041
G09F 9/00
Applicants: NIPPON ELECTRIC GLASS CO., LTD.
日本電気硝子株式会社
Inventors: KAWAMOTO Kosuke
川本 浩佑
YUKI Ken
結城 健
Title: GLASS PLATE FOR CHEMICAL TEMPERING AND METHOD FOR PRODUCING CHEMICALLY TEMPERED GLASS PLATE
Abstract:
This glass plate for chemical tempering is characterized in that: the plate thickness is at least 0.4 mm and less than 1.0 mm; the Vickers hardness is higher than 500 and lower than 650; and when the glass plate is immersed for four hours in 430°C KNO3 molten salt, the compressive stress value of the resulting surface compressive stress layer is at least 1100 MPa and less than 1500 MPa, and the Vickers hardness is at least 700 and less than 1100.