CN105800962B - The manufacturing method of guide reel and optical fiber - Google Patents
The manufacturing method of guide reel and optical fiber Download PDFInfo
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- CN105800962B CN105800962B CN201610091088.1A CN201610091088A CN105800962B CN 105800962 B CN105800962 B CN 105800962B CN 201610091088 A CN201610091088 A CN 201610091088A CN 105800962 B CN105800962 B CN 105800962B
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- optical fiber
- guide reel
- manufacturing
- fiber
- roller
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- 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
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
- C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
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- 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)
- Manufacturing & Machinery (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The present invention provides the manufacturing method of a kind of guide reel and optical fiber, will not damage optical fiber and can guide well for a long time.The traveling of optical fiber (G2) of the guide reel to being formed by resin cladding glass optical fiber (G1) guides, and the Vickers hardness on the surface that the guide reel is contacted with optical fiber (G2) is greater than or equal to 1000.It is used the guide reel as positive lower roll (12), which is set to the underface of fiber drawing furnace (21), is changed to the direction of travel of optical fiber (G2).
Description
The application is based on the application (guiding of China national application number 201210266974.5 proposed on July 30th, 2012
The manufacturing method of roller and optical fiber) divisional application, its content referenced below.
Technical field
The present invention relates to a kind of for the guide reel of optical fiber guided and the manufacturing method of optical fiber.
Background technology
Glass optical fiber is coated and the optical fiber that is formed by resin, coloring process after wire-drawing process, wire-drawing process or again
It is wound in re-winding process of other spools etc. etc., is guided by guide reel and conveyed.
Currently, so that the optical fiber obtained from optical fiber base material wire drawing is rotated on the surface of guide reel, alternately apply up time
The torsion of needle and torsion counterclockwise in order to which the case where concentric circles with circular equally inhibits polarization dispersion, and make
Guide reel is swung.The guide reel of the known swing is formed by aluminium, and the material of guide roller surface is urethane based resin, third
Olefin(e) acid resinoid, aluminium, phenolic resin (for example, referring to patent document 1).
In addition, it is also known that：The processing for implementing coating or ceramic layer on the face with optical fiber contact makes surface state meet and calculates
The condition of art mean roughness Ra≤0.5 μm, maximum height Ry≤2.7 μm and 10 mean roughness Rz≤1.4 μm, makes
The covering material surface of optical fiber not will produce concave-convex and damage (for example, referring to patent document 2).
Patent document 1：Japanese Unexamined Patent Publication 8-295528 bulletins
Patent document 2：Japanese Unexamined Patent Publication 2005-35799 bulletins
Invention content
As the guide reel of optical fiber, before this using be easily worked, cheap and light-weight phenolic resin material (paper phenolic aldehyde tree
Fat), but since phenolic resin material is very soft, so even if if defining surface roughness for example because adhering to or encountering broken string after
Optical fiber sheet glass etc., and make surface abrasion or damage in use.For there is the guiding of the guide reel of damage by surface
Optical fiber, it is possible to make rough surface or the damage of its crust, additionally, it is also possible to generate constitute optical fiber glass optical fiber and crust
Between boundary face stripping delamination.In addition, optical fiber shape is scanned in the traveling process of optical fiber in use
In the case of swelling the check devices such as (bumps) detector, sometimes before and after the check device configuration guide reel and make optical fiber row
Into but if the surface abrasion of guide reel or damage, then making optical fiber generate string pendulum between guide reel dynamic, it is possible to can not be good
Ground is checked.
The object of the present invention is to provide the manufacturing method of a kind of guide reel and optical fiber, which will not damage optical fiber,
Optical fiber can be guided well for a long time.
It can solve the guide reel of the present invention of the above subject, the row of the optical fiber formed to coating glass optical fiber by resin
Into guiding,
It is characterized in that,
The guide reel and the Vickers hardness on the surface of the optical fiber contact are greater than or equal to 1000.
It is preferred that the main part of the guide reel of the present invention is formed by metal material, in the guide reel and the optical fiber contact
Surface on be formed with the composite ceramics overlay film containing chromium oxide.Additionally, it is preferred that the thickness of the composite ceramics overlay film is more than or waits
It is less than or equal to 100 μm in 30 μm.
In the manufacturing method of the optical fiber of the present invention, in the glass optical fiber formed to the base glass material wire drawing in fiber drawing furnace
It is upper resin-coated, to obtain optical fiber,
It is characterized in that,
The positive lower roll of direction of travel as the underface for being set to the fiber drawing furnace and for changing the optical fiber uses
The guide reel of aforementioned present invention.
It is same making the optical fiber formed by resin cladding glass optical fiber advance in the manufacturing method of the optical fiber of the present invention
When, optical fiber is manufactured,
It is characterized in that,
The upstream side and downstream side of the check device checked shape in the traveling process of the optical fiber, set respectively
The guide reel for setting aforementioned present invention guides the traveling of the optical fiber.
The effect of invention
Guide reel according to the present invention, since the Vickers hardness on the surface with optical fiber contact is greater than or equal to 1000, so
The excelling in abrasion resistance on surface.Therefore, following undesirable conditions can be inhibited, that is, for example due to adhering to or encountering the light after breaking
Fine sheet glass etc. and make surface abrasion or damage in use.Therefore, will not due to the surface of guide reel damage and
So that the crust of the optical fiber in advancing is coarse or damages, in addition, the boundary face stripping between glass optical fiber and crust will not be generated
From delamination.Therefore, optical fiber will not be made to damage, can guided well.
In addition, according to the manufacturing method of the optical fiber for the present invention for using above-mentioned guide reel, damage etc. can be made without no
The high-quality optical fiber of good situation, particularly, due to the positive lower roll for being arranged in the underface of fiber drawing furnace be after wire drawing clad compared with
The roller touched at first in the state of softness, and apply the reasons such as larger tension, so if being used as positive lower roll
The guide reel, then its significant effect.
Also, the manufacturing method of optical fiber according to the present invention keeps surface roughening, institute since guide reel will not be made to wear
With before and after the check device checked optical fiber shape, can not make optical fiber carry out string pendulum it is dynamic in the state of to its into
Row guiding can carry out high-precision shape inspection, to manufacture the optical fiber of high-quality using check device.
Description of the drawings
Fig. 1 is the outline structure for an example for indicating to have the fiber fabrication apparatus of guide reel according to the present invention
Figure.
Fig. 2 is the front view of the guide reel for an example for indicating guiding roll shape.
Specific implementation mode
In the following, to guide reel (hereinafter referred to as " high surface hardness roller "), Yi Jili involved by embodiments of the present invention
It is illustrated with the example of the embodiment of the methods for optical fiber manufacture of the fiber fabrication apparatus with high surface hardness roller.
As shown in Figure 1, the fiber fabrication apparatus 1 with the guide reel involved by embodiments of the present invention, most upper at it
Side is swum, there is the fiber drawing furnace 21 heated to glass base material for optical fiber G.Fiber drawing furnace 21 has supply base glass material G inwardly
Cylindric stove heart pipe 3 and heater 4 around the stove heart pipe 3, and formed makes base glass material G soften by heater 4
Heating region.In addition, being provided with the gas supply part 5 for being supplied to heating region and cleaning gas in fiber drawing furnace 21.
The top that base glass material G is held by supply unit 6, so that the end portion of base glass material G is located in stove heart pipe 3
The mode of the heating region of side is conveyed into fiber drawing furnace 21, and base glass material G is stretched downwards and is attenuated, and forms resin packet
Optical fiber (hereinafter referred to as glass optical fiber) G1 before covering.
The lower section (downstream side) of fiber drawing furnace 21 is provided with the cooling device 7 using cooling gas such as helium, thus to glass
Glass optical fiber G1 is cooled down, such as is measured to its outer diameter using the measuring outside diameter device 8 of laser type.The outer diameter of glass optical fiber G1
For example, 125 μm.
It is disposed in the downstream side of outer diameter analyzer 8：Mold 9 coats UV cured on glass optical fiber G1
Type resin；And ultraviolet lamp 10, it is used to make the uv-hardening resin of coating to harden.For passing through the mold
9 and ultraviolet lamp 10 glass optical fiber G1, its periphery formed uv-hardening resin clad, become optical fiber
G2.As uv-hardening resin, such as use polyurethane acrylate resin.The outer diameter of optical fiber G2 is, for example, 250 μm.
After optical fiber G2 is by ultraviolet lamp 10, the guide reel, i.e. for the underface for being set to fiber drawing furnace 21 is hung over
On positive lower roll 12, direction of travel is changed by the positive lower roll 12.Also, using check device 11 to changing row by the positive lower roll 12
Clad into the optical fiber G2 in direction is monitored.The check device 11 is that air-foam detector, measuring outside diameter device or protuberance are (recessed
It is convex) detectors such as detector are that (such as laser type) detects there is bubble-free, packet in the clad of optical fiber G2 in an optical manner
Whether there is or not protuberance (bumps) on the outer diameter or clad of coating, and to optical instrument that the generation of undesirable condition is monitored.
The downstream side of the check device 11 is provided with guide reel 13, by the row for the optical fiber G2 that check device 11 is checked
It is guided by positive lower roll 12 and guide reel 13.
Hereafter the optical fiber G2 for having passed through guide reel 13 is pulled by capstan roller 14, via screening plant 15 and dance roller
16, it 17 is sent to winding spool 18 and is wound.
In above-mentioned manufacturing device 1, as be arranged the underface of fiber drawing furnace 21 positive lower roll 12 and with positive lower roll 12 1
The guide reel 13 guided to the optical fiber G2 in check device 11 is played, high surface hardness roller is used.In addition, being filled in above-mentioned manufacture
In setting 1, positive lower roll 12 works to the guide reel of optical fiber G2 guided as in the upstream side of check device 11, but
This example can also be replaced, independently of the positive lower roll 12 of the direction of travel for changing optical fiber G2, be arranged in check device 11
The guide reel that guides of the upstream side to optical fiber G2.In addition, in this case, it is preferable to positive lower roll 12 and being arranged respectively at
The upstream side of check device 11 and the guide reel in downstream side are all using high surface hardness roller.
In addition, check device 11 can also be not arranged at above-mentioned position.In addition, check device 11 can also be not arranged in
In the device for carrying out wire drawing as above-mentioned manufacturing device 1, and configure color applicator in wire-drawing process about subsequent process or
It rewinds in device.No matter in which kind of device, it is preferably to as configuration in the upstream side of check device 11 and downstream side
Guide reel uses high surface hardness roller.
The positive lower roll 12 and guide reel 13 formed as high surface hardness roller, main part is such as the metal material by aluminium
It is formed.In addition, positive lower roll 12 and guide reel 13 are as shown in Fig. 2, have towards the concave V-shaped groove 33 of its rotary shaft.Also, under just
The valley 34 of the V-shaped groove 33 of roller 12 and guide reel 13 becomes the cylindrical shape that barrel surface is formed along rotary shaft.V-shaped groove 33 as a result,
The surface of valley 34 form the face parallel with rotary shaft.In addition, the V-shaped groove 33 has diameter gradual from valley 34 to both sides
Increased tapered portion 35.
Positive lower roll 12 and guide reel 13 are on the surface comprising valley 34 and the V-shaped groove 33 of tapered portion 35 contacted with optical fiber G2
On, it is formed with containing chromium oxide (Cr2O3) composite ceramics overlay film.The surface of the high surface hardness roller contacted with optical fiber G2 as a result,
Vickers hardness be greater than or equal to 1000.But since the Vickers hardnesses such as diamond (Hv5000~10000) are more than 5000 material
Expect that price is very expensive, it is desirable to Vickers hardnesses to be less than or equal to 5000.
The composite ceramics overlay film using chemical reaction and is formed, with high density, high rigidity overlay film, high adhesion force,
The features such as low-friction coefficient, wear resistance and excellent corrosion resistance.Specifically, the composite ceramics overlay film is to be by average grain diameter
The thickness that about 2 μm of oxidation chromium class composite precision fine ceramic is constituted is the overlay film of 30 μm~100 μm (50 μm of standard thickness) degree,
It is to utilize special ceramics by the small strengthened complex function overlay film of cracking packing compared with the chromium plating film of hard.Also, for
The composite ceramics overlay film, since chromium oxide wherein included is about 2 μm of ultramicro powder, so while keeping high rigidity
Also there is high lubricant effect, also have the function of inhibiting slipper fever.In addition, the composite ceramics overlay film is high hard in addition to having
Except degree, there is highly corrosion resistant also for almost all of solvent.This composite ceramics overlay film is also called CDC-ZAC (notes
Volume trade mark) coating.
In the following, being illustrated to the method for manufacturing optical fiber G2.
First, base glass material G is launched in fiber drawing furnace 21, heated by heater 4 and stretched downwards, with for example about
1600m/ minutes or so linear speeds draw out the glass optical fiber G1 to attenuate.
On the periphery of glass optical fiber G1 after drawing, uv-hardening resin is coated by mold 9, is then utilized ultraviolet
Beam irradiating apparatus 10 carries out ultraviolet light irradiation to uv-hardening resin, makes its hardening, obtains the optical fiber G2 for being coated with resin.
The direction of travel for being coated with the optical fiber G2 of resin is changed by positive lower roll 12, and is drawn to check device 11
It leads.Optical fiber G2 is set to pass through check device 11, to utilize the check device 11, in an optical manner to whether there is or not gas in clad
It steeps, whether there is or not protuberances etc. to carry out shape inspection on the outer diameter or clad of clad.
The optical fiber G2 after shape inspection has been carried out to be guided from guide reel 13 to capstan roller 14.Also, optical fiber G2 is by defeated band
Roller 14, which pulls, is simultaneously applied in defined tension, be delivered to winding spool 18 via screening plant 15 and dance roller 16,17 and
It is wound.
In the present embodiment, as be arranged the positive lower roll 12 of the underface of fiber drawing furnace 21 and with positive lower roll 12 together
To the guide reel 13 that the optical fiber G2 in check device 11 is guided, the surface Vickers hardness using V-shaped groove 33 is greater than or equal to
1000 high surface hardness roller, wherein the V-shaped groove 33 includes the valley 34 contacted with optical fiber G2 and tapered portion 35.For having
The high surface hardness roller of this case hardness, the wear resistance on surface is higher, can inhibit following undesirable conditions, that is, for example
Make surface abrasion or damage in use due to adhering to or encountering sheet glass of optical fiber G2 after breaking etc..Therefore, no
The crust of the optical fiber G2 in advancing can be made coarse due to the damage on the surface of positive lower roll 12 and guide reel 13 or damage, separately
Outside, the delamination of the boundary face stripping between glass optical fiber G1 and crust will not be generated.Therefore, can draw well for a long time
Guiding fiber G2.
Particularly, the direction of the optical fiber G2 to going out from 21 wire drawing of fiber drawing furnace is changed and is guided just to 14 side of capstan roller
Lower roll 12, due to being the roller touched at first in the state that clad is relatively soft after wire drawing, and due to the drawing of capstan roller 14
It drags tension and applies the reasons such as larger tension to optical fiber G2, so that optical fiber G2 is easy to be damaged.Therefore, particularly, make
High surface hardness roller is used for the positive lower roll 12, inhibits the abrasion and damage on surface, so as to inhibit as far as possible to optical fiber G2
Damage.
In addition, on the positive lower roll 12 and guide reel 13 guided to the optical fiber G2 in check device 11, if it happens
String pendulum is dynamic, then generate because from caused by the deviation of the inspection area of check device 11 error detection and the detections such as do not detect not
It is good, to can not accurately be detected, but since these rollers use high surface hardness roller, it is possible to inhibit the mill on surface
Damage is undermined, and inhibits string pendulum dynamic.As a result, in check device 11, the string pendulum of optical fiber G2 can be inhibited dynamic, it can be by detection essence
Degree maintains good state.
In addition, for the high surface hardness roller used as positive lower roll 12 and guide reel 13, contained by being formed on its surface
There is the composite ceramics overlay film of chromium oxide, to make optical fiber G2 be slided in tapered portion 35 using its lubricant effect, and in center
It is successfully guided at valley 34.Thus, it is possible to caused by inhibiting the optical fiber G2 due to traveling to be moved to 35 side of tapered portion
String pendulum is dynamic, can carry out high-precision SHAPE DETECTION using check device 11.
In addition, in the above-described embodiment, surface has been used in the wire-drawing process of one of manufacturing process as optical fiber
High rigidity roller, but can also to be used in the ultraviolet light of colored coating on the optical fiber for be coated with resin hard for the high surface hardness roller
Change type resin and the coloring process that is coated or the optical fiber on spool is rewound to other spools again
In rolling step etc..
[embodiment]
(1) durability test
The material a variety of guide reels different with surface treatment are made, the optical fiber of traveling is guided by these guide reels,
Measure the replacement frequency of guide reel.In addition, the surface of guide reel is roughening and when optical fiber may be made to damage, the base as replacement
It is accurate.
(2) test material
(comparative example 1)
Material：Phenolic resin
Surface treatment：Nothing
Case hardness：HRR122
(comparative example 2)
Material：Aluminium
Surface treatment：Nothing
Case hardness：Hv50~Hv130
(comparative example 3)
Material：Aluminium
Surface treatment：Ta Fulamu (registered trademark) processing
Case hardness：Hv400
(embodiment 1)
Material：Aluminium
Surface treatment：Composite ceramics overlay film containing chromium oxide
Case hardness：Hv1200
In addition, the case hardness " HRR " of the guide reel of comparative example 1 indicates the R grades of Rockwell hardness (HR), it is to utilize 600kgf
Pressure the iron ball of diameter 12.7mm is pressed and the hardness that measures.In addition, the guide reel of comparative example 2,3 and embodiment 1
Case hardness " Hv " indicate Vickers hardness, be to press the diamond of rectangular pyramid, gone out according to the areal calculation left
Hardness.
In addition, the Ta Fulamu processing of comparative example 3 is to form the overlay film being composed of hardening oxidation aluminium and fluororesin
Surface treatment.
(3) test result
The replacement frequency of each guide reel is as follows.
Comparative example 1：6 times/year
Comparative example 2：4 times/year
Comparative example 3：3 times/year
Embodiment 1：0 times/year
As noted above, in the comparative example 1 formed by phenolic resin, since case hardness is low, so annual need more
It changes 6 times.In addition, in the comparative example 2 formed by aluminium, although higher than the case hardness of phenolic resin, it is also required to replacement 4 every year
It is secondary, in addition, implementing on aluminum surfaces in the comparative example 3 that Ta Fulamu is handled, it is also desirable to annual to replace 3 times.
In contrast, it is known that：The composite ceramics overlay film containing chromium oxide is formed on surface and hardness is made to be the reality of Hv1200
It applies in example 1, need not replace, durability is high, realizes long lifetime.Therefore, it is known that：If using the guiding of the present embodiment 1
Roller guides the optical fiber of traveling, then optical fiber will not be made to damage, and can guide well for a long time.
Claims (3)
1. a kind of manufacturing method of optical fiber is advanced making the optical fiber formed by resin cladding glass optical fiber in the method
Meanwhile optical fiber is manufactured,
It is characterized in that,
The upstream side and downstream side of the check device checked shape in the traveling process of the optical fiber, are respectively set and draw
Deflector roll guides the traveling of the optical fiber, the Vickers hardness on the surface of the guide reel and the optical fiber contact be more than or
Equal to 1000.
2. the manufacturing method of optical fiber according to claim 1, which is characterized in that
The main part of the guide reel is formed by metal material, is formed on the surface with the optical fiber contact of the guide reel
There is the composite ceramics overlay film containing chromium oxide.
3. the manufacturing method of optical fiber according to claim 2, which is characterized in that
The thickness of the composite ceramics overlay film is less than or equal to 100 μm more than or equal to 30 μm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011167065A JP2013028513A (en) | 2011-07-29 | 2011-07-29 | Guide roller and method of manufacturing optical fiber |
| JP2011-167065 | 2011-07-29 | ||
| CN201210266974.5A CN102898043B (en) | 2011-07-29 | 2012-07-30 | The manufacture method of guide reel and optical fiber |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210266974.5A Division CN102898043B (en) | 2011-07-29 | 2012-07-30 | The manufacture method of guide reel and optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105800962A CN105800962A (en) | 2016-07-27 |
| CN105800962B true CN105800962B (en) | 2018-10-02 |
Family
ID=47570570
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610091088.1A Active CN105800962B (en) | 2011-07-29 | 2012-07-30 | The manufacturing method of guide reel and optical fiber |
| CN201210266974.5A Active CN102898043B (en) | 2011-07-29 | 2012-07-30 | The manufacture method of guide reel and optical fiber |
| CN201610090992.0A Active CN105800961B (en) | 2011-07-29 | 2012-07-30 | The manufacturing method of guide reel and optical fiber |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210266974.5A Active CN102898043B (en) | 2011-07-29 | 2012-07-30 | The manufacture method of guide reel and optical fiber |
| CN201610090992.0A Active CN105800961B (en) | 2011-07-29 | 2012-07-30 | The manufacturing method of guide reel and optical fiber |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013028513A (en) |
| CN (3) | CN105800962B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6457203B2 (en) * | 2014-06-02 | 2019-01-23 | 高周波熱錬株式会社 | Winding device |
| JP6623541B2 (en) * | 2015-04-15 | 2019-12-25 | 住友電気工業株式会社 | Optical fiber manufacturing method |
| JP2019137599A (en) * | 2018-02-15 | 2019-08-22 | 住友電気工業株式会社 | Guide roller, and optical fiber wire drawing device |
| CN108641061B (en) * | 2018-05-03 | 2021-02-26 | 中国建筑材料科学研究总院有限公司 | Optical fiber wire drawing wheel and wire drawing method thereof |
| CN109504993A (en) * | 2018-12-29 | 2019-03-22 | 陕西北人印刷机械有限责任公司 | A kind of guide roller and its production method |
| CN114945541B (en) * | 2020-01-30 | 2024-02-13 | 住友电气工业株式会社 | Cladding state detection method, cladding state detection device, and optical fiber manufacturing method |
| JP7380410B2 (en) * | 2020-05-01 | 2023-11-15 | 住友電気工業株式会社 | Guide roller and optical fiber drawing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187276C (en) * | 1999-01-27 | 2005-02-02 | 住友电气工业株式会社 | Method and device for producing convered optical fiber and convered optical fiber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0749452Y2 (en) * | 1987-03-18 | 1995-11-13 | 光洋精工株式会社 | Wire guide roller |
| JP2005035799A (en) * | 2003-07-15 | 2005-02-10 | Sumitomo Electric Ind Ltd | Optical fiber production apparatus and optical fiber production method |
| JP2008208481A (en) * | 2007-02-26 | 2008-09-11 | Teijin Fibers Ltd | Apparatus and method for controlling surface of draw roller |
-
2011
- 2011-07-29 JP JP2011167065A patent/JP2013028513A/en active Pending
-
2012
- 2012-07-30 CN CN201610091088.1A patent/CN105800962B/en active Active
- 2012-07-30 CN CN201210266974.5A patent/CN102898043B/en active Active
- 2012-07-30 CN CN201610090992.0A patent/CN105800961B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187276C (en) * | 1999-01-27 | 2005-02-02 | 住友电气工业株式会社 | Method and device for producing convered optical fiber and convered optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105800962A (en) | 2016-07-27 |
| CN105800961A (en) | 2016-07-27 |
| CN105800961B (en) | 2018-10-02 |
| JP2013028513A (en) | 2013-02-07 |
| CN102898043A (en) | 2013-01-30 |
| CN102898043B (en) | 2016-03-09 |
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