Process for producing cover glass for potable appliance
A technology for protective glass and portable equipment, applied in the field of protective glass for portable equipment, can solve the problems of increased Li ion concentration, difficult ion exchange, etc., and achieves the effect of small intensity unevenness and long life
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Embodiment 1)
[0093] The cover glass for portable devices of this Example was manufactured through the following (1) glass plate cutting process process, (2) chemical strengthening process.
[0094] (1) Glass plate cutting process
[0095] First, a large-sized glass plate with a thickness of 0.5 mm made of aluminosilicate glass produced by the down-draw method or float method is cut to form a cover glass (substrate for cover glass) of a predetermined size (long side 10 cm x short side 5 cm). ). As this aluminosilicate glass, a glass containing SiO 2 : 58 to 75% by weight, Al 2 o 3 : 5 to 23% by weight, Li 2 O: 3 to 10% by weight, Na 2 O: 4 to 13% by weight, ZrO 2 : 5.5 to 15% by weight of glass for chemical strengthening. The cutting of this glass plate is performed by machining.
[0096] (2) Chemical strengthening process
[0097] Next, chemical strengthening is given to the said cover glass. Chemical fortification using potassium nitrate (KNO 3 ) as molten salt, and prepare to ...
Embodiment 2)
[0110] In the chemical strengthening process of Example 1, sodium phosphate (Na 3 PO 4 ) was used as an additive to be added to the molten salt solution, and a chemical strengthening process was implemented in the same manner as in Example 1 to manufacture cover glasses for portable devices (100 sheets).
Embodiment 3)
[0112] In the chemical strengthening process of Example 1, potassium sulfate (K 2 SO 4 ) was used as an additive to be added to the molten salt solution, and a chemical strengthening process was implemented in the same manner as in Example 1 to manufacture cover glasses for portable devices (100 sheets).
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