GB2021556A - Method of Processing Glass Tubing - Google Patents

Method of Processing Glass Tubing

Info

Publication number
GB2021556A
GB2021556A GB7918512A GB7918512A GB2021556A GB 2021556 A GB2021556 A GB 2021556A GB 7918512 A GB7918512 A GB 7918512A GB 7918512 A GB7918512 A GB 7918512A GB 2021556 A GB2021556 A GB 2021556A
Authority
GB
United Kingdom
Prior art keywords
glass tubing
glass
mandrel
processing glass
bag
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.)
Granted
Application number
GB7918512A
Other versions
GB2021556B (en
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB2021556A publication Critical patent/GB2021556A/en
Application granted granted Critical
Publication of GB2021556B publication Critical patent/GB2021556B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Treatment Of Glass (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

The alkali content of the inner surface of glass tubing is reduced by introducing an acidic gas into the glass tubing at the hot draw stage to react with alkali ions on the inner surface of the glass and form a water- soluble salt, which may subsequently be removed by washing. The glass tubing (6) is drawn from a tank (1) containing molten glass (2) and forms a bag stage (4) within which is located a mandrel (3). A delivery tube (11) passes through the mandrel and serves to introduce the acidic gas into the bag (4). The gas may be SO2, HCl or NO. <IMAGE>
GB7918512A 1978-05-30 1979-05-29 Method of processing glass tubing Expired GB2021556B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91041978A 1978-05-30 1978-05-30

Publications (2)

Publication Number Publication Date
GB2021556A true GB2021556A (en) 1979-12-05
GB2021556B GB2021556B (en) 1982-12-01

Family

ID=25428756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918512A Expired GB2021556B (en) 1978-05-30 1979-05-29 Method of processing glass tubing

Country Status (10)

Country Link
JP (1) JPS54156021A (en)
AR (1) AR218135A1 (en)
BE (1) BE876593A (en)
BR (1) BR7902381A (en)
CA (1) CA1146359A (en)
DE (1) DE2921128A1 (en)
GB (1) GB2021556B (en)
IT (1) IT1121510B (en)
MX (1) MX152272A (en)
NL (1) NL7904206A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076481A2 (en) * 1981-10-02 1983-04-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen incandescent lamp and method for the protection of its inner surface
WO2005088667A2 (en) * 2004-03-09 2005-09-22 Lynn Judd B Miniature tubular gas discharge lamp and method of manufacture

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2590305B2 (en) * 1985-05-07 1997-03-12 株式会社 半導体エネルギー研究所 Semiconductor device manufacturing method
US5391893A (en) 1985-05-07 1995-02-21 Semicoductor Energy Laboratory Co., Ltd. Nonsingle crystal semiconductor and a semiconductor device using such semiconductor
JP2657182B2 (en) * 1994-05-20 1997-09-24 株式会社 半導体エネルギー研究所 Semiconductor device manufacturing method and semiconductor device
JP2005170736A (en) * 2003-12-11 2005-06-30 Ishizuka Glass Co Ltd Oxidation reaction inhibiting glass material and oxidation reaction inhibiting glass container

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS476044U (en) * 1971-02-12 1972-09-20
JPS497317A (en) * 1972-05-12 1974-01-23
JPS5040617A (en) * 1973-08-13 1975-04-14
JPS51129410A (en) * 1975-05-02 1976-11-11 Hiroaki Yanagida Method of treating glass surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076481A2 (en) * 1981-10-02 1983-04-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogen incandescent lamp and method for the protection of its inner surface
EP0076481A3 (en) * 1981-10-02 1983-11-09 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Halogen incandescent lamp and method for the protection of its inner surface
WO2005088667A2 (en) * 2004-03-09 2005-09-22 Lynn Judd B Miniature tubular gas discharge lamp and method of manufacture
WO2005088667A3 (en) * 2004-03-09 2007-02-01 Judd B Lynn Miniature tubular gas discharge lamp and method of manufacture

Also Published As

Publication number Publication date
CA1146359A (en) 1983-05-17
NL7904206A (en) 1979-12-04
IT7923034A0 (en) 1979-05-28
BE876593A (en) 1979-09-17
JPS6339528B2 (en) 1988-08-05
DE2921128A1 (en) 1979-12-06
IT1121510B (en) 1986-04-02
BR7902381A (en) 1979-12-11
GB2021556B (en) 1982-12-01
JPS54156021A (en) 1979-12-08
AR218135A1 (en) 1980-05-15
MX152272A (en) 1985-06-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee