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US 2014/0150525 A1Published application
Method for impact-testing chemically strengthened glass, method for reproducing cracks in chemically strenghtned glass, and method for manufacturing chemically strengthened glass
AssigneeAsahi Glass Company, Limited
InventorsHiroyuki Okawa, Kazuhiko Yamanaka
Life of this patent
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Abstract
A chemically strengthened glass is disposed on a base, and an impacting object is dropped from above in a state where one surface of the chemically strengthened glass is in contact with an abrasive surface of a sandpaper containing an abrasive having a size of not smaller than a depth of a compressive stress layer.
Claims15
A method for impact-testing a chemically strengthened glass having formed on a surface thereof a compressive stress layer,
- the method comprising disposing the chemically strengthened glass on a base, and dropping an impacting object from above in a state where one surface of the chemically strengthened glass is in contact with an abrasive surface of a sandpaper containing an abrasive having a size of not smaller than a depth of the compressive stress layer.
A method for reproducing a crack in a chemically strengthened glass having formed on a surface thereof a compressive stress layer,
- the method comprising giving an impact on the chemically strengthened glass to thereby make a flaw having a depth larger than the compressive stress layer.
Dependencies are inferred from the claim text.