JPS57140330A - Spinning method for optical fiber - Google Patents

Spinning method for optical fiber

Info

Publication number
JPS57140330A
JPS57140330A JP2532081A JP2532081A JPS57140330A JP S57140330 A JPS57140330 A JP S57140330A JP 2532081 A JP2532081 A JP 2532081A JP 2532081 A JP2532081 A JP 2532081A JP S57140330 A JPS57140330 A JP S57140330A
Authority
JP
Japan
Prior art keywords
optical fiber
inlet
outlet
furnace
nozzles
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
JP2532081A
Other languages
Japanese (ja)
Inventor
Takao Kimura
Masao Nishimura
Takashi Namikawa
Masayuki Nishimoto
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP2532081A priority Critical patent/JPS57140330A/en
Publication of JPS57140330A publication Critical patent/JPS57140330A/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
    • C03B2205/82—Means for sealing the fibre exit or lower end of the furnace
    • C03B2205/83—Means for sealing the fibre exit or lower end of the furnace using gas

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 economically manufacture a high-grade optical fiber with high strength by spraying a clean gas outward to seal the inlet and outlet of a spinning furnace. CONSTITUTION:A base material A for an optical fiber is fed to a spinning furnace 1 from the inlet 2, melted by heating with the core tube 4, drawn from the lower end at high speed, and taken out as an optical fiber B from the furnace 1 through the outlet 3. The furnace 1 is supplied with a suitable inert gas such as Ar, He or N2 from leading pipes 5, 6. Air or a clean gas such as N2 is sprayed on the vicinities of the inlet 2 and the outlet 3 from nozzles 7, 8 through spray pipes 9, 10, respectively, and by allowing gaseous currents C1 to flow along the periphery of the material A from the upward nozzles 7 and gaseous currents C2 to flow along the periphery of the fiber B from the downward nozzles 8, the inlet 2 and the outlet 3 are sealed. By the sealing effect the consumption of the inert gas is reduced, and impurities are prevented from entering from the outside.
JP2532081A 1981-02-23 1981-02-23 Spinning method for optical fiber Pending JPS57140330A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2532081A JPS57140330A (en) 1981-02-23 1981-02-23 Spinning method for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2532081A JPS57140330A (en) 1981-02-23 1981-02-23 Spinning method for optical fiber

Publications (1)

Publication Number Publication Date
JPS57140330A true JPS57140330A (en) 1982-08-30

Family

ID=12162684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2532081A Pending JPS57140330A (en) 1981-02-23 1981-02-23 Spinning method for optical fiber

Country Status (1)

Country Link
JP (1) JPS57140330A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60246240A (en) * 1984-05-07 1985-12-05 ル　ヴエール　フリユオール　エス　ア Manufacture of fluorine glass optical fiber and optical element and device for carrying out same
JPS6161352A (en) * 1984-08-31 1986-03-29 Nec Kagoshima Ltd Fluorescent character display tube
EP0795519A1 (en) * 1996-03-14 1997-09-17 Alcatel Fibres Optiques Device for injecting non-oxidising gas inside a furnace
US6192715B1 (en) 1997-07-24 2001-02-27 The Furukawa Electric Co., Ltd. Furnace for forming optical fiber
WO2004050572A1 (en) * 2002-12-05 2004-06-17 Nextrom Holding S.A. Method and apparatus for making optical fibres

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60246240A (en) * 1984-05-07 1985-12-05 ル　ヴエール　フリユオール　エス　ア Manufacture of fluorine glass optical fiber and optical element and device for carrying out same
JPS6161352A (en) * 1984-08-31 1986-03-29 Nec Kagoshima Ltd Fluorescent character display tube
EP0795519A1 (en) * 1996-03-14 1997-09-17 Alcatel Fibres Optiques Device for injecting non-oxidising gas inside a furnace
FR2746176A1 (en) * 1996-03-14 1997-09-19 Alcatel Fibres Optiques NON-OXIDIZING GAS INJECTION DEVICE INSIDE AN OVEN
US5970083A (en) * 1996-03-14 1999-10-19 Alcatel Fibres Optiques Device for injecting non-oxidizing gas into a furnace
US6192715B1 (en) 1997-07-24 2001-02-27 The Furukawa Electric Co., Ltd. Furnace for forming optical fiber
WO2004050572A1 (en) * 2002-12-05 2004-06-17 Nextrom Holding S.A. Method and apparatus for making optical fibres
JP2006508884A (en) * 2002-12-05 2006-03-16 ネクストロム ホールディング エス．アー． Optical fiber manufacturing method
CN100363286C (en) * 2002-12-05 2008-01-23 奈克斯特罗姆·霍尔丁公司 Method and apparatus for making optical fibres

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