JPS52119949A - Method of reducing variations in wire diameter of optical fibers - Google Patents

Method of reducing variations in wire diameter of optical fibers

Info

Publication number
JPS52119949A
JPS52119949A JP3603976A JP3603976A JPS52119949A JP S52119949 A JPS52119949 A JP S52119949A JP 3603976 A JP3603976 A JP 3603976A JP 3603976 A JP3603976 A JP 3603976A JP S52119949 A JPS52119949 A JP S52119949A
Authority
JP
Japan
Prior art keywords
wire diameter
optical fibers
reducing variations
temperature
heating
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
JP3603976A
Other languages
Japanese (ja)
Inventor
Katsuyuki Imoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP3603976A priority Critical patent/JPS52119949A/en
Publication of JPS52119949A publication Critical patent/JPS52119949A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/029—Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/80—Means for sealing the preform entry or upper end of the furnace
    • C03B2205/81—Means for sealing the preform entry or upper end of the furnace using gas
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C03B2205/91—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles by controlling the furnace gas flow rate into or out of the furnace
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C03B2205/98—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles using annular gas inlet distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To reduce the vairations in wire diameter at the time of drawing in a preform method by feeding the gas preheated to a temperature near the temperature within a heating source, into the heating soruce.
JP3603976A 1976-04-02 1976-04-02 Method of reducing variations in wire diameter of optical fibers Pending JPS52119949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3603976A JPS52119949A (en) 1976-04-02 1976-04-02 Method of reducing variations in wire diameter of optical fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3603976A JPS52119949A (en) 1976-04-02 1976-04-02 Method of reducing variations in wire diameter of optical fibers

Publications (1)

Publication Number Publication Date
JPS52119949A true JPS52119949A (en) 1977-10-07

Family

ID=12458555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3603976A Pending JPS52119949A (en) 1976-04-02 1976-04-02 Method of reducing variations in wire diameter of optical fibers

Country Status (1)

Country Link
JP (1) JPS52119949A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5488325A (en) * 1977-12-05 1979-07-13 Corning Glass Works Wave guide filament pulling apparatus
JPS54134135A (en) * 1978-02-21 1979-10-18 Corning Glass Works Extracting of thermoplastic filament from long and narrow extractable element
JPS5939743A (en) * 1982-08-31 1984-03-05 Sumitomo Electric Ind Ltd Method and apparatus for drawing optical fiber
JPS6360124A (en) * 1986-08-28 1988-03-16 Sumitomo Electric Ind Ltd Wire drawing furnace for optical fiber
JPH03500159A (en) * 1987-06-26 1991-01-17 インコム，インコーポレイテッド Glass drawing method and furnace
WO2015050103A1 (en) * 2013-10-01 2015-04-09 住友電気工業株式会社 Method for manufacturing optical fiber

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5488325A (en) * 1977-12-05 1979-07-13 Corning Glass Works Wave guide filament pulling apparatus
JPS6346013B2 (en) * 1977-12-05 1988-09-13 Corning Glass Works
JPS54134135A (en) * 1978-02-21 1979-10-18 Corning Glass Works Extracting of thermoplastic filament from long and narrow extractable element
JPS5939743A (en) * 1982-08-31 1984-03-05 Sumitomo Electric Ind Ltd Method and apparatus for drawing optical fiber
JPS6360124A (en) * 1986-08-28 1988-03-16 Sumitomo Electric Ind Ltd Wire drawing furnace for optical fiber
JPH03500159A (en) * 1987-06-26 1991-01-17 インコム，インコーポレイテッド Glass drawing method and furnace
JP2557673B2 (en) * 1987-06-26 1996-11-27 インコム，インコーポレイテッド Glass drawing method and furnace
WO2015050103A1 (en) * 2013-10-01 2015-04-09 住友電気工業株式会社 Method for manufacturing optical fiber

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