JPS55144450A - Reinforcing treatment of inorganic glass for watch - Google Patents
Reinforcing treatment of inorganic glass for watchInfo
- Publication number
- JPS55144450A JPS55144450A JP5003279A JP5003279A JPS55144450A JP S55144450 A JPS55144450 A JP S55144450A JP 5003279 A JP5003279 A JP 5003279A JP 5003279 A JP5003279 A JP 5003279A JP S55144450 A JPS55144450 A JP S55144450A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- watch
- fixture
- top surface
- bottom face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
PURPOSE: To provide watch glass strong against force applied from the top face and therefore strong in use by a method wherein inorganic glass for watch is curved at the center section and dipped into molten salt containing potassium nitrate.
CONSTITUTION: A watch cover glass 1 is fixed in a fixture 2, supported at the periphery of glass bottom face, and is pressed at the center section of the top surface. This applies compressive stress on the top surface and tensile stress on the bottom face. The so fixed glass is preheated, dipped into molten salt and held there, then cooled in air, washed with water to remove KNO3, is dried, and removed from the fixture. In this process, tensile stress in the glass bottom face allows faster ion-exchange rate than that in no stressed condition. This results in more of potassium ions exchanged with sodium ions and produces compressive stress higher at the bottom than the top surface, in condition the glass is removed from the fixture after chemical reinforcing process.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5003279A JPS55144450A (en) | 1979-04-23 | 1979-04-23 | Reinforcing treatment of inorganic glass for watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5003279A JPS55144450A (en) | 1979-04-23 | 1979-04-23 | Reinforcing treatment of inorganic glass for watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55144450A true JPS55144450A (en) | 1980-11-11 |
Family
ID=12847647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5003279A Pending JPS55144450A (en) | 1979-04-23 | 1979-04-23 | Reinforcing treatment of inorganic glass for watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55144450A (en) |
Cited By (22)
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---|---|---|---|---|
WO2012061049A1 (en) * | 2010-11-04 | 2012-05-10 | Apple Inc. | Enhanced strengthening of glass |
US8549882B2 (en) | 2009-09-30 | 2013-10-08 | Apple Inc. | Pre-processing techniques to produce complex edges using a glass slumping process |
US8923693B2 (en) | 2010-07-30 | 2014-12-30 | Apple Inc. | Electronic device having selectively strengthened cover glass |
US9207528B2 (en) | 2010-06-04 | 2015-12-08 | Apple Inc. | Thin sheet glass processing |
US9615448B2 (en) | 2008-06-27 | 2017-04-04 | Apple Inc. | Method for fabricating thin sheets of glass |
US9725359B2 (en) | 2011-03-16 | 2017-08-08 | Apple Inc. | Electronic device having selectively strengthened glass |
US9756739B2 (en) | 2012-01-25 | 2017-09-05 | Apple Inc. | Glass device housing |
US9778685B2 (en) | 2011-05-04 | 2017-10-03 | Apple Inc. | Housing for portable electronic device with reduced border region |
US9886062B2 (en) | 2014-02-28 | 2018-02-06 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
US9944554B2 (en) | 2011-09-15 | 2018-04-17 | Apple Inc. | Perforated mother sheet for partial edge chemical strengthening and method therefor |
US9946302B2 (en) | 2012-09-19 | 2018-04-17 | Apple Inc. | Exposed glass article with inner recessed area for portable electronic device housing |
US10018891B2 (en) | 2012-01-10 | 2018-07-10 | Apple Inc. | Integrated camera window |
US10021798B2 (en) | 2010-09-17 | 2018-07-10 | Apple Inc. | Glass enclosure |
CN108367975A (en) * | 2015-12-18 | 2018-08-03 | 旭硝子欧洲玻璃公司 | Glass substrate for chemical strengthening and the method that carries out chemical strengthening with controlled curvature |
WO2018200807A1 (en) * | 2017-04-26 | 2018-11-01 | Corning Incorporated | Three dimensional glass article and methods of making |
US10133156B2 (en) | 2012-01-10 | 2018-11-20 | Apple Inc. | Fused opaque and clear glass for camera or display window |
US10144669B2 (en) | 2011-11-21 | 2018-12-04 | Apple Inc. | Self-optimizing chemical strengthening bath for glass |
US10185113B2 (en) | 2009-03-02 | 2019-01-22 | Apple Inc. | Techniques for strengthening glass covers for portable electronic devices |
US10189743B2 (en) | 2010-08-18 | 2019-01-29 | Apple Inc. | Enhanced strengthening of glass |
US10320959B2 (en) | 2011-09-29 | 2019-06-11 | Apple Inc. | Multi-layer transparent structures for electronic device housings |
US10401904B2 (en) | 2011-05-04 | 2019-09-03 | Apple Inc. | Housing for portable electronic device with reduced border region |
US10781135B2 (en) | 2011-03-16 | 2020-09-22 | Apple Inc. | Strengthening variable thickness glass |
-
1979
- 1979-04-23 JP JP5003279A patent/JPS55144450A/en active Pending
Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9615448B2 (en) | 2008-06-27 | 2017-04-04 | Apple Inc. | Method for fabricating thin sheets of glass |
US10185113B2 (en) | 2009-03-02 | 2019-01-22 | Apple Inc. | Techniques for strengthening glass covers for portable electronic devices |
US8549882B2 (en) | 2009-09-30 | 2013-10-08 | Apple Inc. | Pre-processing techniques to produce complex edges using a glass slumping process |
US9207528B2 (en) | 2010-06-04 | 2015-12-08 | Apple Inc. | Thin sheet glass processing |
US8923693B2 (en) | 2010-07-30 | 2014-12-30 | Apple Inc. | Electronic device having selectively strengthened cover glass |
US10189743B2 (en) | 2010-08-18 | 2019-01-29 | Apple Inc. | Enhanced strengthening of glass |
US10765020B2 (en) | 2010-09-17 | 2020-09-01 | Apple Inc. | Glass enclosure |
US11785729B2 (en) | 2010-09-17 | 2023-10-10 | Apple Inc. | Glass enclosure |
US10398043B2 (en) | 2010-09-17 | 2019-08-27 | Apple Inc. | Glass enclosure |
US10021798B2 (en) | 2010-09-17 | 2018-07-10 | Apple Inc. | Glass enclosure |
JP2013544220A (en) * | 2010-11-04 | 2013-12-12 | アップル インコーポレイテッド | Improved glass strengthening |
KR20160036066A (en) * | 2010-11-04 | 2016-04-01 | 애플 인크. | Enhanced strengthening of glass |
CN106082704A (en) * | 2010-11-04 | 2016-11-09 | 苹果公司 | The enhancing strengthening of glass |
TWI473774B (en) * | 2010-11-04 | 2015-02-21 | Apple Inc | Enhanced strengthening of glass |
AU2011323891B2 (en) * | 2010-11-04 | 2015-07-16 | Apple Inc. | Enhanced strengthening of glass |
WO2012061049A1 (en) * | 2010-11-04 | 2012-05-10 | Apple Inc. | Enhanced strengthening of glass |
CN103261112A (en) * | 2010-11-04 | 2013-08-21 | 苹果公司 | Enhanced strengthening of glass |
US10676393B2 (en) | 2011-03-16 | 2020-06-09 | Apple Inc. | Electronic device having selectively strengthened glass |
US11518708B2 (en) | 2011-03-16 | 2022-12-06 | Apple Inc. | Electronic device having selectively strengthened glass |
US9725359B2 (en) | 2011-03-16 | 2017-08-08 | Apple Inc. | Electronic device having selectively strengthened glass |
US10781135B2 (en) | 2011-03-16 | 2020-09-22 | Apple Inc. | Strengthening variable thickness glass |
US10983557B2 (en) | 2011-05-04 | 2021-04-20 | Apple Inc. | Housing for portable electronic device with reduced border region |
US10761563B2 (en) | 2011-05-04 | 2020-09-01 | Apple Inc. | Housing for portable electronic device with reduced border region |
US11681326B2 (en) | 2011-05-04 | 2023-06-20 | Apple Inc. | Housing for portable electronic device with reduced border region |
US10401904B2 (en) | 2011-05-04 | 2019-09-03 | Apple Inc. | Housing for portable electronic device with reduced border region |
US9778685B2 (en) | 2011-05-04 | 2017-10-03 | Apple Inc. | Housing for portable electronic device with reduced border region |
US10656674B2 (en) | 2011-05-04 | 2020-05-19 | Apple Inc. | Housing for portable electronic device with reduced border region |
US9944554B2 (en) | 2011-09-15 | 2018-04-17 | Apple Inc. | Perforated mother sheet for partial edge chemical strengthening and method therefor |
US10574800B2 (en) | 2011-09-29 | 2020-02-25 | Apple Inc. | Multi-layer transparent structures for electronic device housings |
US11368566B2 (en) | 2011-09-29 | 2022-06-21 | Apple Inc. | Multi-layer transparent structures for electronic device housings |
US10320959B2 (en) | 2011-09-29 | 2019-06-11 | Apple Inc. | Multi-layer transparent structures for electronic device housings |
US10144669B2 (en) | 2011-11-21 | 2018-12-04 | Apple Inc. | Self-optimizing chemical strengthening bath for glass |
US10018891B2 (en) | 2012-01-10 | 2018-07-10 | Apple Inc. | Integrated camera window |
US10551722B2 (en) | 2012-01-10 | 2020-02-04 | Apple Inc. | Fused opaque and clear glass for camera or display window |
US10133156B2 (en) | 2012-01-10 | 2018-11-20 | Apple Inc. | Fused opaque and clear glass for camera or display window |
US9756739B2 (en) | 2012-01-25 | 2017-09-05 | Apple Inc. | Glass device housing |
US10512176B2 (en) | 2012-01-25 | 2019-12-17 | Apple Inc. | Glass device housings |
US10278294B2 (en) | 2012-01-25 | 2019-04-30 | Apple Inc. | Glass device housings |
US11612975B2 (en) | 2012-01-25 | 2023-03-28 | Apple Inc. | Glass device housings |
US10842031B2 (en) | 2012-01-25 | 2020-11-17 | Apple Inc. | Glass device housings |
US11260489B2 (en) | 2012-01-25 | 2022-03-01 | Apple Inc. | Glass device housings |
US9946302B2 (en) | 2012-09-19 | 2018-04-17 | Apple Inc. | Exposed glass article with inner recessed area for portable electronic device housing |
US10496135B2 (en) | 2014-02-28 | 2019-12-03 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
US9886062B2 (en) | 2014-02-28 | 2018-02-06 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
US10579101B2 (en) | 2014-02-28 | 2020-03-03 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
CN108367975A (en) * | 2015-12-18 | 2018-08-03 | 旭硝子欧洲玻璃公司 | Glass substrate for chemical strengthening and the method that carries out chemical strengthening with controlled curvature |
WO2018200807A1 (en) * | 2017-04-26 | 2018-11-01 | Corning Incorporated | Three dimensional glass article and methods of making |
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