Method for producing toughened glass plate
AssigneeNippon Electric Glass Co., Ltd.
InventorsHiroyuki YASUDA, Kozo KOBAYASHI, Takuji OKA, Naoki TOYOFUKU, Shigeru SERA
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Abstract
A method of manufacturing a tempered glass sheet of the present invention includes: subjecting a glass sheet to be tempered having a sheet thickness of 2.0 mm or less to ion exchange treatment; and performing heat treatment at a temperature of 50° C. or more and less than a strain point of the glass sheet to be tempered.
Claims16
A method of manufacturing a tempered glass sheet, comprising:
- subjecting a glass sheet to be tempered having a sheet thickness of 2.0 mm or less to ion exchange treatment;
- and
- performing heat treatment at a temperature of 50° C. or more and less than a strain point of the glass sheet to be tempered.
A method of manufacturing a tempered glass sheet, comprising:
- subjecting a glass sheet to be tempered having a sheet thickness of 2.0 mm or less to ion exchange treatment through use of an ion exchange solution containing a KNO3 molten salt;
- and
- performing heat treatment so that a value of (internal K emission intensity)/(surface layer K emission intensity) becomes from more than 0.67 to 0.95.
A tempered glass sheet, which has a sheet thickness of less than 0.7 mm and a value of (internal K emission intensity)/(surface layer K emission intensity) of from more than 0.67 to 0.95.
Dependencies are inferred from the claim text.