Toughened glass plate, method for manufacturing toughened glass plate, and glass plate to be toughened
AssigneeNippon Electric Glass Co., Ltd.
InventorKen YUKl
Life of this patent
Estimating the term…
Abstract
The present tempered glass sheet includes a compression stress layer on the surface and a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, and from 0.001 to 0.30 mol % of SnO2, in which ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
Claims21
A tempered glass sheet comprising a compression stress layer on a surface and a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, and from 0.001 to 0.30 mol % of SnO2, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
A tempered glass sheet comprising a compression stress layer on a surface and a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, from 0.001 to 0.045 mol % of SnO2, and from 0.02 to 0.3 mol % of Cl, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86.
A tempered glass sheet comprising a compression stress layer on a surface and a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0.1 to 3 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, from 0.001 to 0.30 mol % of SnO2, and from 0.02 to 0.3 mol % of Cl, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
A method of manufacturing a tempered glass sheet, the method comprising a preparation step and an ion exchange step, the preparation step comprising preparing a glass sheet to be tempered comprising a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, and from 0.001 to 0.30 mol % of SnO2, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40, the ion exchange step comprising, by subjecting the glass sheet to be tempered to a plurality of ion exchange treatments, obtaining a tempered glass sheet comprising a compression stress layer on a surface.
A glass sheet to be tempered, which is an ion-exchangeable glass sheet to be tempered, comprising a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, and from 0.001 to 0.30 mol % of SnO2, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
A glass sheet to be tempered, which is an ion-exchangeable glass sheet to be tempered, comprising a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0 to 10 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, from 0.001 to 0.045 mol % of SnO2, and from 0.02 to 0.3 mol % of Cl, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
A glass sheet to be tempered, which is an ion-exchangeable glass sheet to be tempered, comprising a glass composition containing from 40 to 80 mol % of SiO2, from 6 to 25 mol % of Al2O3, from 0.1 to 3 mol % of B2O3, from 3 to 15 mol % of Li2O, from 1 to 21 mol % of Na2O, from 0 to 10 mol % of K2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P2O5, from 0.001 to 0.30 mol % of SnO2, and from 0.02 to 0.3 mol % of Cl, wherein ([Li2O]+[Na2O]+[K2O])/[Al2O3] is greater than or equal to 0.86, and ([SiO2]+[B2O3]+[P2O5])/((100×[SnO2])×([Al2O3]+[Li2O]+[Na2O]+[K2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.
Dependencies are inferred from the claim text.