Title:
METHOD FOR PRODUCTION OF FLOAT GLASS FOR CHEMICAL STRENGTHENING
Document Type and Number:
WIPO Patent Application WO/2013/183449
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a float glass for chemical strengthening, whereby warpage subsequent to chemical strengthening can be effectively suppressed, and processes, such as a polishing process, preceding the chemical strengthening process can be eliminated or simplified. In this method for production of float glass for chemical strengthening, molten glass (1) is flowed into a molten metal bath (5), and is molded to sheet form as the molten glass (1) cools while advancing over the bath surface of the molten metal bath (5). Where the viscosity of the molten glass (1) flowing into the molten metal bath (5) is denoted by η0, and the viscosity of the molten glass (1) 9.1 m downstream from the upstream end of the molten metal bath (5) is denoted by η1, η1 - η0 ≥ 2.0 × 104 (Pa·s)
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Inventors:
SHIRAI MASANOBU (JP)
IGA MOTOICHI (JP)
KAGAMI TOKUHIRO (JP)
HAYASHI YASUO (JP)
YAMANAKA KAZUHIKO (JP)
MIYASAKA SATOSHI (JP)
IGA MOTOICHI (JP)
KAGAMI TOKUHIRO (JP)
HAYASHI YASUO (JP)
YAMANAKA KAZUHIKO (JP)
MIYASAKA SATOSHI (JP)
Application Number:
PCT/JP2013/064193
Publication Date:
December 12, 2013
Filing Date:
May 22, 2013
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
C03B18/02; C03C3/078; C03C3/085; C03C3/087
Domestic Patent References:
| WO2013005588A1 | 2013-01-10 |
Foreign References:
| JP2000281365A | 2000-10-10 | |||
| JP2008143746A | 2008-06-26 | |||
| JP2010168252A | 2010-08-05 |
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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