SE433605B - DEVICE FOR A GLASS FIBER TREATMENT EQUIPMENT FOR FIBER COOLING - Google Patents
DEVICE FOR A GLASS FIBER TREATMENT EQUIPMENT FOR FIBER COOLINGInfo
- Publication number
- SE433605B SE433605B SE8107823A SE8107823A SE433605B SE 433605 B SE433605 B SE 433605B SE 8107823 A SE8107823 A SE 8107823A SE 8107823 A SE8107823 A SE 8107823A SE 433605 B SE433605 B SE 433605B
- Authority
- SE
- Sweden
- Prior art keywords
- fiber
- cooling
- glass
- treatment equipment
- glass fiber
- Prior art date
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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/16—Dipping
-
- 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
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
- C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
- C03B37/0235—Thermal treatment of the fibre during the drawing process, e.g. cooling
-
- 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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/106—Single coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
' 10 15 20 25 8107823-0 ningen innefattar en efter dragstället placerad kylanordning och dess kännetecken framgår av bifogade patentkrav. The device comprises a cooling device placed after the towing point and its features appear from the appended claims.
FIGURBESKRIVNING Uppfinningen skall närmare beskrivas i anslutning till bifogade ritning där Fig 1 schematiskt visar en utrustning för dragning och mantling av optiska fibrer.DESCRIPTION OF THE FIGURES The invention will be described in more detail in connection with the accompanying drawing, in which Fig. 1 schematically shows an equipment for drawing and sheathing of optical fibers.
FUREÖRAGEN UTFÖRINGSFORM I Fig 1 betecknar 10 en smältdegel för glas, i detta fall en s k dubbel- degel av det slag som beskrivs i artikeln Optical Fibres i Ericsson Review nr 3 1980 p 12-13. Den är i första hand avsedd för framställning _ av optiska fibrer av s k step indextyp men kan också användas vid fram- ställning av "graded-index" fibrer. Dubbeldegeln innefattar en inre de- gel 11 med en glasmassa 13 med högt brytningsindex och en yttre degel 12 med glasmassa 14 med lågt brytningsindex avsedd att bilda fiberns mantel. Glasmassan 13 från den inre degeln rinner sakta ut från munstycket 15 och passerar genom den yttre degeln och det yttre munstycket 16. Dâ glasmassan passerar det senare munstycket 16 är kärnan omgivén av glas frân den yttre degeln. Dâ glasmassan passerat det yttre munstycket 16 bildas en menisk 17 och från denna dras glaset ut i en tunn fiber 18 med hjälp av en kapstananordning 26. Den utdragna fibern kommer att ha en kärna av glassorten 13 omgiven av en mantel av glassorten 14.FUREÖRAGEN EMBODIMENT In Fig. 1, 10 denotes a melting crucible for glass, in this case a so-called double crucible of the type described in the article Optical Fibers in Ericsson Review no. 3 1980 p 12-13. It is primarily intended for the production of optical fibers of the so-called step index type, but can also be used in the production of "graded-index" fibers. The double crucible comprises an inner crucible 11 with a glass mass 13 with a high refractive index and an outer crucible 12 with a glass mass 14 with a low refractive index intended to form the sheath of the fiber. The glass mass 13 from the inner crucible flows slowly out of the nozzle 15 and passes through the outer crucible and the outer nozzle 16. As the glass mass passes the later nozzle 16, the core is surrounded by glass from the outer crucible. When the glass mass passes the outer nozzle 16, a meniscus 17 is formed and from this the glass is drawn out into a thin fiber 18 by means of a capstan device 26. The drawn-out fiber will have a core of the glass type 13 surrounded by a sheath of the glass type 14.
Fiberns diameter är beroende av kapstananordningens draghastighet och utströmningshastigheten genom munstyckena 15 och 16 som i sin tur beror pâ glasmassornas temperatur och.viskozitet. Diametern mäts med en tjock- leksmätare 19 som genom en lämplig reglerutrustning av känt slag styr kapstananordningens draghastighet.The diameter of the fiber depends on the drawing speed of the capstan device and the outflow speed through the nozzles 15 and 16, which in turn depends on the temperature and viscosity of the glass masses. The diameter is measured with a thickness gauge 19 which, through a suitable control equipment of a known type, controls the towing speed of the capstan device.
Fibern är efter dragningen känslig för repning och föroreningar och mås- te därför snarast möjligt förses med en skyddande beläggning vilket sker a'i en behållare 20 med lämpligt flytande beläggningsmaterial, lämpligen härdbart kiselgummi som härdas efter passagen genom behållaren 20 i en lämplig icke visad värmekälla. 10 15 2D 25 ~ 8107823-0 Mellan dragmunstycket 16 och behållaren är anordnad en kylkammare 21 genom vilken den dragna fibern passerar.After drawing, the fiber is sensitive to scratches and contaminants and must therefore be provided with a protective coating as soon as possible, which takes place in a container 20 with a suitable liquid coating material, suitably curable silicone rubber which is cured after passage through the container 20 in a suitable heat source. . 2D 25 ~ 8107823-0 Between the drawing nozzle 16 and the container is arranged a cooling chamber 21 through which the drawn fiber passes.
Kylkammaren 21 består av ett rör 22 av ett poröst material med mycket fina, öppna porer. Materialet kan lämpligen vara genom sintring eller på annat sätt framställd porös metall till exempel brons. Det kan också utgöras av andra typer av material såsom mikroporös keramik eller plast.The cooling chamber 21 consists of a tube 22 of a porous material with very fine, open pores. The material may suitably be by sintering or otherwise produced porous metal, for example bronze. It can also consist of other types of materials such as microporous ceramics or plastic.
Runt rörets yttersida är anordnad en behållare 23 försedd med ett till- loppsrör 24 anslutet till en källa för komprimerad gas företrädesvis torr kvävgas. Gasen passerar genom det porösa röret 22 och-in i.utrymmet 25 runt fibern. Det stora antalet porer i röret 22 gör att den gasström som kommer in i utrymmet 24 är mycket jämnt fördelad runt fibern och denna kommer inte att utsättas för några transversalkrafter. För att hindra att gasströmmen går uppåt och kyler fibern för tidigt innan den är fär- digdragen till rätt dimension är rörets 22 övre mynning försedd med en skärm 27 t ex en irisbländare som endast är försedd med ett fint hâl ge- nom vilket fibern kan passera in i röret 22. Genom kylningen kan avstån- det mellan dragningsmunstycket 16 och behållaren 20 förkortas avsevärt.Arranged around the outside of the pipe is a container 23 provided with an inlet pipe 24 connected to a source of compressed gas, preferably dry nitrogen gas. The gas passes through the porous tube 22 and into the space 25 around the fiber. The large number of pores in the tube 22 means that the gas flow entering the space 24 is very evenly distributed around the fiber and this will not be subjected to any transverse forces. To prevent the gas flow from rising and cooling the fiber too early before it is finished to the correct dimension, the upper mouth of the tube 22 is provided with a screen 27, for example an iris mixer which is only provided with a fine hole through which the fiber can pass. into the tube 22. Due to the cooling, the distance between the drawing nozzle 16 and the container 20 can be considerably shortened.
Dä kylningen sker med en torkad gas lämpligen kvävgas minskas vidare den risk som finns att fibern absorberar vatten vilket starkt sänker fiberns hållfasthet genom att tränga in i mikrosprickorna. Genom en så- dan snabb avkylning av fibern bygger man in tryckspänningar i fiberns yttre skikt så att fiberns draghållfasthet ökar på samma sätt som i hår- dat glas. 7 När fibern passerar genom badet är den så avsvalnad att någon härdning ej sker utan beläggningen blir jämnt fördelad runt tråden.When the cooling takes place with a dried gas, suitably nitrogen gas, the risk that the fiber absorbs water is further reduced, which greatly lowers the strength of the fiber by penetrating into the microcracks. Through such rapid cooling of the fiber, compressive stresses are built into the outer layer of the fiber so that the tensile strength of the fiber increases in the same way as in hardened glass. 7 When the fiber passes through the bath, it is so cooled that no curing takes place but the coating is evenly distributed around the wire.
Claims (3)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8107823A SE433605B (en) | 1981-12-29 | 1981-12-29 | DEVICE FOR A GLASS FIBER TREATMENT EQUIPMENT FOR FIBER COOLING |
JP83500072A JPS58502200A (en) | 1981-12-29 | 1982-12-20 | Equipment for glass fiber drawing machine |
EP83900082A EP0097669A1 (en) | 1981-12-29 | 1982-12-20 | A device in equipment for drawing glass fibres |
PCT/SE1982/000432 WO1983002268A1 (en) | 1981-12-29 | 1982-12-20 | A device in equipment for drawing glass fibres |
IT24974/82A IT1153893B (en) | 1981-12-29 | 1982-12-24 | COOLING DEVICES FOR GLASS FIBER DRAWING EQUIPMENT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8107823A SE433605B (en) | 1981-12-29 | 1981-12-29 | DEVICE FOR A GLASS FIBER TREATMENT EQUIPMENT FOR FIBER COOLING |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8107823L SE8107823L (en) | 1983-06-30 |
SE433605B true SE433605B (en) | 1984-06-04 |
Family
ID=20345387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8107823A SE433605B (en) | 1981-12-29 | 1981-12-29 | DEVICE FOR A GLASS FIBER TREATMENT EQUIPMENT FOR FIBER COOLING |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0097669A1 (en) |
JP (1) | JPS58502200A (en) |
IT (1) | IT1153893B (en) |
SE (1) | SE433605B (en) |
WO (1) | WO1983002268A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989002420A1 (en) * | 1987-09-08 | 1989-03-23 | Oy Nokia Ab | A method of and an apparatus for cooling an optical fibre |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8402799A (en) * | 1984-09-13 | 1986-04-01 | Philips Nv | METHOD AND APPARATUS FOR MANUFACTURING AN OPTICAL FIBER WITH A PLASTIC COATING |
US4838918A (en) * | 1987-12-01 | 1989-06-13 | Alcatel Na | Inert atmosphere cooler for optical fibers |
US5377491A (en) * | 1992-12-11 | 1995-01-03 | Praxair Technology, Inc. | Coolant recovery process |
US6668582B2 (en) | 2001-04-20 | 2003-12-30 | American Air Liquide | Apparatus and methods for low pressure cryogenic cooling |
US6651358B2 (en) | 2001-04-30 | 2003-11-25 | American Air Liquide, Inc. | Heat transfer fluids and methods of making and using same comprising hydrogen, helium and combinations thereof |
US6574972B2 (en) | 2001-04-30 | 2003-06-10 | L'air Liquide - Societe' Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Low temperature heat transfer methods |
US20030205066A1 (en) * | 2002-03-25 | 2003-11-06 | Ghani M. Usman | Method and apparatus for efficient cooling of optical fiber during its manufacture |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE698179C (en) * | 1938-12-30 | 1940-11-04 | Lambert Jansen | ze plastic masses, such as B. Glass |
DE2734152A1 (en) * | 1977-07-28 | 1979-02-08 | Siemens Ag | DEVICE FOR DRAWING A BUNCH OF CORE-CLOTHING FIBERS |
-
1981
- 1981-12-29 SE SE8107823A patent/SE433605B/en not_active IP Right Cessation
-
1982
- 1982-12-20 EP EP83900082A patent/EP0097669A1/en not_active Withdrawn
- 1982-12-20 WO PCT/SE1982/000432 patent/WO1983002268A1/en not_active Application Discontinuation
- 1982-12-20 JP JP83500072A patent/JPS58502200A/en active Pending
- 1982-12-24 IT IT24974/82A patent/IT1153893B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989002420A1 (en) * | 1987-09-08 | 1989-03-23 | Oy Nokia Ab | A method of and an apparatus for cooling an optical fibre |
Also Published As
Publication number | Publication date |
---|---|
SE8107823L (en) | 1983-06-30 |
IT8224974A1 (en) | 1984-06-24 |
IT8224974A0 (en) | 1982-12-24 |
WO1983002268A1 (en) | 1983-07-07 |
IT1153893B (en) | 1987-01-21 |
JPS58502200A (en) | 1983-12-22 |
EP0097669A1 (en) | 1984-01-11 |
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