FR2368677B2 - - Google Patents

Info

Publication number
FR2368677B2
FR2368677B2 FR7631408A FR7631408A FR2368677B2 FR 2368677 B2 FR2368677 B2 FR 2368677B2 FR 7631408 A FR7631408 A FR 7631408A FR 7631408 A FR7631408 A FR 7631408A FR 2368677 B2 FR2368677 B2 FR 2368677B2
Authority
FR
France
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.)
Expired
Application number
FR7631408A
Other versions
FR2368677A2 (fr
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7631408A priority Critical patent/FR2368677A2/fr
Publication of FR2368677A2 publication Critical patent/FR2368677A2/fr
Application granted granted Critical
Publication of FR2368677B2 publication Critical patent/FR2368677B2/fr
Granted 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
    • C03B2205/62—Heating means for drawing
    • C03B2205/64—Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
    • 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
    • C03B2205/96—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 tangential feed approximately perpendicular to the draw axis

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)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)
FR7631408A 1976-10-19 1976-10-19 Four pour tres hautes temperatures Granted FR2368677A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7631408A FR2368677A2 (fr) 1976-10-19 1976-10-19 Four pour tres hautes temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7631408A FR2368677A2 (fr) 1976-10-19 1976-10-19 Four pour tres hautes temperatures

Publications (2)

Publication Number Publication Date
FR2368677A2 FR2368677A2 (fr) 1978-05-19
FR2368677B2 true FR2368677B2 (fr) 1982-04-23

Family

ID=9178928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631408A Granted FR2368677A2 (fr) 1976-10-19 1976-10-19 Four pour tres hautes temperatures

Country Status (1)

Country Link
FR (1) FR2368677A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818550C2 (de) * 1977-04-30 1990-03-29 Sumitomo Electric Industries, Ltd., Osaka Vorrichtung zum Ziehen von optischen Fasern
FR2452470B1 (fr) * 1979-03-29 1984-06-29 Gouronnec Alain
EP0814485B1 (fr) 1996-06-21 2002-09-25 PIRELLI CAVI E SISTEMI S.p.A. Composition isolante résistante à la formation d'arborescences dues à l'eau
DE60021877T2 (de) * 1999-05-10 2006-06-08 Pirelli & C. S.P.A. Verfahren und induktionsofen zum ziehen von vorformen grosser diameter zu optischen fasern

Also Published As

Publication number Publication date
FR2368677A2 (fr) 1978-05-19

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Legal Events

Date Code Title Description
TP Transmission of property