JPS5532720A - Glass plate forming method - Google Patents

Glass plate forming method

Info

Publication number
JPS5532720A
JPS5532720A JP10282078A JP10282078A JPS5532720A JP S5532720 A JPS5532720 A JP S5532720A JP 10282078 A JP10282078 A JP 10282078A JP 10282078 A JP10282078 A JP 10282078A JP S5532720 A JPS5532720 A JP S5532720A
Authority
JP
Japan
Prior art keywords
recess
jig
fin
glass plate
depth
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
JP10282078A
Other languages
Japanese (ja)
Inventor
Taishin Yoshino
Osamu Yugawa
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.)
Renesas Eastern Japan Semiconductor Inc
Original Assignee
Hitachi Tokyo Electronics Co Ltd
Hitachi Ome Electronic Co 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 Hitachi Tokyo Electronics Co Ltd, Hitachi Ome Electronic Co Ltd filed Critical Hitachi Tokyo Electronics Co Ltd
Priority to JP10282078A priority Critical patent/JPS5532720A/en
Publication of JPS5532720A publication Critical patent/JPS5532720A/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
    • C03B23/0305—Press-bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces
    • 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
    • C03B23/025—Re-forming glass sheets by bending by gravity
    • C03B23/0256—Gravity bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces

Landscapes

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

Abstract

PURPOSE: To make trimming work unnecessary, in forming the front glass plate of a fluorescent display tube, by setting a fin absorbing recess at the part of a jig corresponding to the peripheral part of a glass plate to minimize the length of a fin protruded.
CONSTITUTION: Depth B of recess 11A of lower jig 11 is shallowed to 40W60% of the thickness of glass plate 10, and fin absorbing recess 12A of depth D (50W 20% of the glass thickness) is set at the part of upper jig 12 contacting to the periphery of plate 10. Recess 12A is protruded to the jig edge side by a very short length such as about 0.2mm compared to recess 11A. That is, distance C between recess 12A and the edge of jig 12 is made slightly shorter than distance A between recess 11A and the edge of jig 11. Thus, the vol. of a fin formed does not change, yet the thickness of fine 10A is increased to that about corresponding to the depth of recess 12A. Accordingly, the length of fin 10A protruded becomes almost negligible.
COPYRIGHT: (C)1980,JPO&Japio
JP10282078A 1978-08-25 1978-08-25 Glass plate forming method Pending JPS5532720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10282078A JPS5532720A (en) 1978-08-25 1978-08-25 Glass plate forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10282078A JPS5532720A (en) 1978-08-25 1978-08-25 Glass plate forming method

Publications (1)

Publication Number Publication Date
JPS5532720A true JPS5532720A (en) 1980-03-07

Family

ID=14337652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10282078A Pending JPS5532720A (en) 1978-08-25 1978-08-25 Glass plate forming method

Country Status (1)

Country Link
JP (1) JPS5532720A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54117479A (en) * 1978-03-06 1979-09-12 Japan Tobacco Inc 3'-hydroxy-4'-methoxy-3-phenyl 3,4-dihydro-isocoumarin-8-o-beta-d-glucose and tobacco perfume improver containing it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54117479A (en) * 1978-03-06 1979-09-12 Japan Tobacco Inc 3'-hydroxy-4'-methoxy-3-phenyl 3,4-dihydro-isocoumarin-8-o-beta-d-glucose and tobacco perfume improver containing it

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