Title:
CHEMICALLY STRENGTHENED GLASS AND METHOD FOR MANUFACTURING CHEMICALLY STRENGTHENED GLASS
Document Type and Number:
WIPO Patent Application WO/2019/021930
Kind Code:
A1
Abstract:
Provided is a strengthened glass plate comprising: a compressive stress layer having a compressive stress of 20 MPa or more continuously from a main surface in the depth direction; and a tensile stress layer provided on the inner side of the compressive stress layer in the plate thickness direction and having a tensile stress of 20 MPa or more continuously in the depth direction. The strengthened glass plate comprises a stress-neutral layer between the compressive stress layer and the tensile stress layer. The stress-neutral layer has a compressive stress of less than 20 MPa and/or a tensile stress of less than 20 MPa continuously in the plate thickness direction, and has a thickness of 5.3% or more of the plate thickness.
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Inventors:
KINOSHITA KIYOTAKA (JP)
SASAKI HIROSHI (JP)
SASAKI HIROSHI (JP)
Application Number:
PCT/JP2018/027098
Publication Date:
January 31, 2019
Filing Date:
July 19, 2018
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
C03C21/00; C03C3/083; C03C3/085; C03C3/097
Foreign References:
| JP2017100929A | 2017-06-08 | |||
| JP2016044119A | 2016-04-04 | |||
| US20160122239A1 | 2016-05-05 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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