JPS55104931A - Forming method for cover glass for display tube - Google Patents

Forming method for cover glass for display tube

Info

Publication number
JPS55104931A
JPS55104931A JP897379A JP897379A JPS55104931A JP S55104931 A JPS55104931 A JP S55104931A JP 897379 A JP897379 A JP 897379A JP 897379 A JP897379 A JP 897379A JP S55104931 A JPS55104931 A JP S55104931A
Authority
JP
Japan
Prior art keywords
glass
softening point
flange portion
peripheral portion
display
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
Application number
JP897379A
Other languages
Japanese (ja)
Inventor
Ryoichi Seura
Masayuki Sawada
Haruo Kiritooshi
Katsuya Yamamoto
Kiyohisa Kato
Katsuyuki Matsushita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Nippon Electric Kagoshima Ltd
Yamato Denki Co Ltd
NEC Kagoshima Ltd
Original Assignee
NEC Corp
Nippon Electric Kagoshima Ltd
Yamato Denki Co Ltd
Nippon Electric Co Ltd
NEC Kagoshima Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Kagoshima Ltd, Yamato Denki Co Ltd, Nippon Electric Co Ltd, NEC Kagoshima Ltd filed Critical NEC Corp
Priority to JP897379A priority Critical patent/JPS55104931A/en
Publication of JPS55104931A publication Critical patent/JPS55104931A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

PURPOSE: To eliminate a main cause for an unfavorable flange portion form and stabilize production of the title glass by holding a peripheral portion of flat plate glass between dies; heating the display section of the glass to below the softening point and the flange portion to the softening point or above; and press-forming the glass.
CONSTITUTION: Flat plate glass 8 cut into predetermined size is placed on carbon lower die 6, and frame-like carbon middle die 5 is put on glass 8 so as to hold a peripheral portion of glass 8 between dies 6, 5. Metal upper die 7 for pressing provided with an upper flange is set on a glass 8 portion corresponding to the glass display face section and contacted to the glass surface. The peripheral portion is then heated to the softening point or above, e.g. about 800°C with heating source 9 in a nitrogen gas atmosphere and the display section glass to the softening point or below. Glass 8 thus heated is press-formed. A conventional defect, unfavorable deformation due to contraction of the flange portion is eliminated, and the flange portion of cover glass for a display tube can be formed uniformly.
COPYRIGHT: (C)1980,JPO&Japio
JP897379A 1979-01-29 1979-01-29 Forming method for cover glass for display tube Pending JPS55104931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP897379A JPS55104931A (en) 1979-01-29 1979-01-29 Forming method for cover glass for display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP897379A JPS55104931A (en) 1979-01-29 1979-01-29 Forming method for cover glass for display tube

Publications (1)

Publication Number Publication Date
JPS55104931A true JPS55104931A (en) 1980-08-11

Family

ID=11707620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP897379A Pending JPS55104931A (en) 1979-01-29 1979-01-29 Forming method for cover glass for display tube

Country Status (1)

Country Link
JP (1) JPS55104931A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010002446A1 (en) * 2008-07-02 2010-01-07 Corning Incorporated Method of making shaped glass articles
JP2012116722A (en) * 2010-12-02 2012-06-21 Nippon Electric Glass Co Ltd Method and apparatus for bending forming glass plate
JP2013536795A (en) * 2010-08-30 2013-09-26 コーニング インコーポレイテッド Apparatus and method for forming glass substrate
WO2014182553A1 (en) * 2013-05-07 2014-11-13 Corning Incorporated Process and apparatus for forming shaped glass articles
CN104704545A (en) * 2012-10-10 2015-06-10 日本电气硝子株式会社 Mobile-display cover glass and method for manufacturing same
JP5845496B1 (en) * 2015-03-13 2016-01-20 株式會社塩山製作所 Sheet glass bending apparatus and method
WO2017095767A1 (en) * 2015-11-30 2017-06-08 Corning Incorporated Method and system for making articles from preformed materials

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010002446A1 (en) * 2008-07-02 2010-01-07 Corning Incorporated Method of making shaped glass articles
US9688562B2 (en) 2008-07-02 2017-06-27 Corning Incorporated Method of making shaped glass articles
JP2013536795A (en) * 2010-08-30 2013-09-26 コーニング インコーポレイテッド Apparatus and method for forming glass substrate
JP2012116722A (en) * 2010-12-02 2012-06-21 Nippon Electric Glass Co Ltd Method and apparatus for bending forming glass plate
US9701562B2 (en) 2012-10-10 2017-07-11 Nippon Electric Glass Co., Ltd. Mobile-display cover glass and method for manufacturing same
CN104704545A (en) * 2012-10-10 2015-06-10 日本电气硝子株式会社 Mobile-display cover glass and method for manufacturing same
US9656899B2 (en) 2013-05-07 2017-05-23 Corning Incorporated Process and apparatus for forming shaped glass articles
CN105377781A (en) * 2013-05-07 2016-03-02 康宁股份有限公司 Process and apparatus for forming shaped glass articles
US9187358B2 (en) 2013-05-07 2015-11-17 Corning Incorporated Process and apparatus for forming shaped glass articles
WO2014182553A1 (en) * 2013-05-07 2014-11-13 Corning Incorporated Process and apparatus for forming shaped glass articles
CN109836032A (en) * 2013-05-07 2019-06-04 康宁股份有限公司 The method and apparatus of preparation molding glassware
CN105967506A (en) * 2015-03-13 2016-09-28 株式会社盐山制作所 Plate glass bending forming device and method
JP5845496B1 (en) * 2015-03-13 2016-01-20 株式會社塩山製作所 Sheet glass bending apparatus and method
WO2017095767A1 (en) * 2015-11-30 2017-06-08 Corning Incorporated Method and system for making articles from preformed materials

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