WO1999048829A1 - Arrangement in connection with fibre coating line - Google Patents

Arrangement in connection with fibre coating line Download PDF

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Publication number
WO1999048829A1
WO1999048829A1 PCT/FI1999/000240 FI9900240W WO9948829A1 WO 1999048829 A1 WO1999048829 A1 WO 1999048829A1 FI 9900240 W FI9900240 W FI 9900240W WO 9948829 A1 WO9948829 A1 WO 9948829A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulling device
line
fibres
arrangement
cooling
Prior art date
Application number
PCT/FI1999/000240
Other languages
French (fr)
Inventor
Kimmo Aura
Jukka Hillberg
Simo Kekkonen
Pauli Kettunen
Paavo Veijanen
Original Assignee
Nextrom Holding S.A.
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 Nextrom Holding S.A. filed Critical Nextrom Holding S.A.
Priority to JP2000537818A priority Critical patent/JP2002507540A/en
Priority to CA002326158A priority patent/CA2326158A1/en
Priority to BR9909030-9A priority patent/BR9909030A/en
Priority to EP99910407A priority patent/EP1068158B1/en
Priority to AT99910407T priority patent/ATE267778T1/en
Priority to US09/646,016 priority patent/US6569247B1/en
Priority to DE69917619T priority patent/DE69917619T2/en
Priority to AU29377/99A priority patent/AU739152B2/en
Priority to KR1020007010456A priority patent/KR20010074455A/en
Publication of WO1999048829A1 publication Critical patent/WO1999048829A1/en

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
    • 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
    • C03C25/20—Contacting the fibres with applicators, e.g. rolls
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4486—Protective covering

Definitions

  • the invention relates to an arrangement in connection with a coating line which comprises a fibre payout device from which fibres are arranged to be guided to a press for forming a coating round the fibres, a cooling device for cooling a conductor formed by the coating and the fibres, a pulling device by means of which the conductor formed by the coating and the fibres is pulled further from the press, and means for guiding the conductor to the next processing stage after the cooling, whereby the pulling device is arranged above the height of the line so as to enable the lowest point of the pulling device to be substantially at the height of the line.
  • a common requirement at present is that excess fibre lengths can be kept to the minimum.
  • a common principle in the field is that a desired excess fibre length is produced by winding a conductor formed by a sheath and a fibre or fibres round a wheel of a determined diameter, whereby the fibres are pressed against the inner surface of the sheath, and a negative excess fibre length is formed between the sheath and the fibres.
  • the sheath contracts as a result from the cooling, whereby a final, usually positive excess fibre length with respect to the sheath can be achieved for the fibres.
  • a product paid out from a press must be wound round a pulling wheel once or twice, and therefore the product must be deviated from the wire line by appropriate controllers.
  • the controllers generate friction and scratch the surface of the sheath.
  • the friction generated by the controllers leads to the fact that line rates cannot be increased since an increase in the rate increases the frictional forces too much.
  • To place the pulling device below the fibre line is usually also techni- cally difficult and a structure fixedly mounted in the line makes the start-up of the line more difficult since the product paid out from the press must be passed via the pulling device.
  • the fixedly positioned structure in the line restricts the adaptation of the production line for different processes.
  • An object of the invention is to provide an arrangement by means of which the disadvantages of the prior art can be eliminated. This is achieved by the arrangement of the invention, which is characterized in that the pulling device is arranged to be uplifted entirely above the height of the line substantially in a vertical direction.
  • a particular advantage of the solution of the invention is that the passing stage during the start-up of the line previously known to be difficult and laborious can now be performed most advantageously, in other words, it is extremely easy for the operator to guide the sheath paid out from the press to the pulling device after the pulling device has been uplifted from a groove which serves as a cooling device.
  • a further advantage of the invention is that the invention can be extremely advantageously applied so as to enable high rates to be used on the line.
  • a still further advantage of the invention is that the cooling and heating of the sheath can be implemented highly advantageously since the pulling device is placed in a wet space.
  • Another advantage of the invention is that the location of the pulling device can be advantageously changed as required by the process.
  • Figure 2 is a schematic side view of the arrangement of the invention .
  • Figure 3 is a view of the arrangement in accordance with Figure 2 seen in the direction of the line
  • Figure 4 is a view of the arrangement in accordance with Figures 2 and 3 seen from above
  • Figure 5 is a view of the arrangement in accordance with Figures 2, 3 and 4 seen in an uplifted position.
  • Figure 1 schematically shows a fibre coating line.
  • Reference number 1 refers to a fibre payout device
  • reference number 2 refers to a press by means of which a tube-like sheath made of a plastic material is formed round fibres paid out from the fibre payout device 1.
  • Reference number 3 refers to a cooling means, which can be a cooling groove or a cooling channel, for example.
  • Reference number 4 in Figure 1 refers to a pulling device, whose operation will be described in closer detail below.
  • Reference number 5 refers to a belt drive device, and reference number 6, in turn, refers to a dancer.
  • Reference number 7 in Figure 1 refers to a double-take-up-spooler.
  • Figures 2 to 4 schematically show a preferred embodiment of the pulling device 4 used in an arrangement in accordance with the invention.
  • the pulling device 4 comprises two wheels 8, 9 which are rotationally mounted on horizontal axes and arranged in succession in the direction of movement of the fibres.
  • the pulling device shown in Figures 2 to 4 is arranged in the fibre coating line above the height of the line so as to enable, when the line is in operation, the lowest point of the pulling device to be substantially at the height of the line.
  • Figure 3 for instance, which also shows that the lower edge of the wheel 8 is located within a cooling groove 3.
  • the location of the pulling device on the line is determined on the basis of the dimensions, material, desired line rate and number of fibres of the product to be manufactured.
  • the basic idea of the invention is that the pulling device 4 is arranged to be uplifted entirely above the height of the line substantially in a vertical direction. This characteristic is extremely advantageous in connection with the start-up of the line, as stated above.
  • the vertical movement of the pulling device is schematically described by means of arrow M in Figure 1.
  • Figures 3 and 5 in which case Figure 3 shows the location of the pulling device when the line is in operation, and Figure 5 shows the location of the pulling device during the start-up of the line, whereby the operator guides the sheath paid out from the press 2 to the pulling device 4 and further.
  • the distance the pulling device can be uplifted can, of course, be freely chosen as necessary.
  • As an example of the length of the shift can here be given a numerical value 200 mm. It is obvious that the pulling device is returned to the "low" position in accordance with Figure 3 before the process actually begins.
  • the pulling device is formed by means of two wheels 8, 9 as described above.
  • To form a small angular difference between the wheels 8, 9 is particularly advantageous, in other words to arrange the wheels 8, 9 on levels provided with a small angular difference between them, whereby the product paid out from the press 2 is allowed to travel smoothly and naturally and correctly placed, without any additional controllers.
  • a further advantage of the arrangement of the invention is that the temperature of the sheath can be kept stable in an extremely advantageous way. This can be implemented by placing sprayers 10 in connection with the pulling device to enable the temperature of the sheath to be lowered or raised if desired by adjusting the temperature of the water to be sprayed.
  • the shifting of the pulling device in a vertical direction can be freely implemented in various ways.
  • the pulling device can be arranged for instance to be placed in particular points of the fibre line by producing suitable mounting points in the floor, for example.
  • the vertical movement of the pulling device can be provided in any suitable way, for instance hydraulically, mechanically, etc.
  • the shifting can be performed manually or by means of a suitable power source.
  • the invention can also be applied by means of different pulling devices, for example a one-wheel application is fully feasible if such an arrangement is necessary, etc.
  • the sur- face of the wheels can be smooth or grooved.
  • the wheels can comprise a wheel deck of several wheels, the wheels of the deck located on the same axis being allowed to rotate with respect to each other.
  • the invention is by no means restricted to the optic fibre although the invention is described by means of an optic fibre line.
  • the in- vention can also be applied to other purposes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Multicomponent Fibers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Processing Of Terminals (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)

Abstract

The invention relates to an arrangement in connection with a fibre coating line which comprises a fibre payout device (1) from which fibres are arranged to be guided to a press (2) for forming a coating round the fibres, a cooling device (3) for cooling a conductor formed by the coating and the fibres, a pulling device (4) by means of which the conductor formed by the coating and the fibres is pulled further from the press (2), and means for guiding the conductor to the next processing stage after cooling, whereby the pulling device (4) is arranged above the height of the line so as to enable the lowest point of the pulling device (4) to be substantially at the height of the line. To facilitate the start-up of the line, the pulling device (4) is arranged to be uplifted entirely above the height of the line substantially in a vertical direction.

Description

ARRANGEMENT IN CONNECTION WITH FIBRE COATING LINE
The invention relates to an arrangement in connection with a coating line which comprises a fibre payout device from which fibres are arranged to be guided to a press for forming a coating round the fibres, a cooling device for cooling a conductor formed by the coating and the fibres, a pulling device by means of which the conductor formed by the coating and the fibres is pulled further from the press, and means for guiding the conductor to the next processing stage after the cooling, whereby the pulling device is arranged above the height of the line so as to enable the lowest point of the pulling device to be substantially at the height of the line.
In fibre cable production, a common requirement at present is that excess fibre lengths can be kept to the minimum. A common principle in the field is that a desired excess fibre length is produced by winding a conductor formed by a sheath and a fibre or fibres round a wheel of a determined diameter, whereby the fibres are pressed against the inner surface of the sheath, and a negative excess fibre length is formed between the sheath and the fibres. At the next processing stages, the sheath contracts as a result from the cooling, whereby a final, usually positive excess fibre length with respect to the sheath can be achieved for the fibres.
At present, arrangements of this kind are widely known in connection with secondary coating lines of optic cables, for example. In the field, it is known to use a wheel drive device or a belt drive device as a pulling device. US patent 4 893 998 and EP publications 0 286 819 and 0 275 994 disclose solutions which can be given as examples of known solutions in the field. In these solutions, the pulling device is positioned below the fibre line and mounted to be a fixed part of the production line.
In a common one-wheel pulling device, a product paid out from a press must be wound round a pulling wheel once or twice, and therefore the product must be deviated from the wire line by appropriate controllers. The controllers, however, generate friction and scratch the surface of the sheath. The friction generated by the controllers leads to the fact that line rates cannot be increased since an increase in the rate increases the frictional forces too much. To place the pulling device below the fibre line is usually also techni- cally difficult and a structure fixedly mounted in the line makes the start-up of the line more difficult since the product paid out from the press must be passed via the pulling device. The fixedly positioned structure in the line restricts the adaptation of the production line for different processes.
Solutions in which the pulling device is positioned above the fibre line have been provided for eliminating the problems described above. EP publication 0 443 701 discloses a structure which exemplifies such a solution. However, the disadvantages presented by this known structure include all the above drawbacks of the one-wheel pulling device. Furthermore, a further drawback also presented by this solution is the difficult stage at which the product is passed via the pulling device during the start-up of the line. An object of the invention is to provide an arrangement by means of which the disadvantages of the prior art can be eliminated. This is achieved by the arrangement of the invention, which is characterized in that the pulling device is arranged to be uplifted entirely above the height of the line substantially in a vertical direction. A particular advantage of the solution of the invention is that the passing stage during the start-up of the line previously known to be difficult and laborious can now be performed most advantageously, in other words, it is extremely easy for the operator to guide the sheath paid out from the press to the pulling device after the pulling device has been uplifted from a groove which serves as a cooling device. A further advantage of the invention is that the invention can be extremely advantageously applied so as to enable high rates to be used on the line. A still further advantage of the invention is that the cooling and heating of the sheath can be implemented highly advantageously since the pulling device is placed in a wet space. Another advantage of the invention is that the location of the pulling device can be advantageously changed as required by the process.
The invention will be described in closer detail in the following by means of a preferred embodiment shown in the accompanying drawing, in which Figure 1 schematically shows a fibre coating line in connection with an arrangement in accordance with the invention,
Figure 2 is a schematic side view of the arrangement of the invention ,
Figure 3 is a view of the arrangement in accordance with Figure 2 seen in the direction of the line, Figure 4 is a view of the arrangement in accordance with Figures 2 and 3 seen from above, and
Figure 5 is a view of the arrangement in accordance with Figures 2, 3 and 4 seen in an uplifted position. Figure 1 schematically shows a fibre coating line. Reference number 1 refers to a fibre payout device, and reference number 2 refers to a press by means of which a tube-like sheath made of a plastic material is formed round fibres paid out from the fibre payout device 1. Reference number 3 refers to a cooling means, which can be a cooling groove or a cooling channel, for example. Reference number 4 in Figure 1 refers to a pulling device, whose operation will be described in closer detail below. Reference number 5 refers to a belt drive device, and reference number 6, in turn, refers to a dancer. Reference number 7 in Figure 1 refers to a double-take-up-spooler.
The structure and operation of the different components of a fibre coating line are known to those skilled in the art, so these subjects will not be discussed here in closer detail.
Figures 2 to 4 schematically show a preferred embodiment of the pulling device 4 used in an arrangement in accordance with the invention. In the embodiment of Figures 2 to 4, the pulling device 4 comprises two wheels 8, 9 which are rotationally mounted on horizontal axes and arranged in succession in the direction of movement of the fibres. The pulling device shown in Figures 2 to 4 is arranged in the fibre coating line above the height of the line so as to enable, when the line is in operation, the lowest point of the pulling device to be substantially at the height of the line. Such an arrangement is clearly shown in Figure 3, for instance, which also shows that the lower edge of the wheel 8 is located within a cooling groove 3.
The location of the pulling device on the line is determined on the basis of the dimensions, material, desired line rate and number of fibres of the product to be manufactured. The basic idea of the invention is that the pulling device 4 is arranged to be uplifted entirely above the height of the line substantially in a vertical direction. This characteristic is extremely advantageous in connection with the start-up of the line, as stated above. The vertical movement of the pulling device is schematically described by means of arrow M in Figure 1. In this connection, further reference is made to Figures 3 and 5, in which case Figure 3 shows the location of the pulling device when the line is in operation, and Figure 5 shows the location of the pulling device during the start-up of the line, whereby the operator guides the sheath paid out from the press 2 to the pulling device 4 and further. The distance the pulling device can be uplifted can, of course, be freely chosen as necessary. As an example of the length of the shift can here be given a numerical value 200 mm. It is obvious that the pulling device is returned to the "low" position in accordance with Figure 3 before the process actually begins.
In the example of the figures, the pulling device is formed by means of two wheels 8, 9 as described above. To form a small angular difference between the wheels 8, 9 is particularly advantageous, in other words to arrange the wheels 8, 9 on levels provided with a small angular difference between them, whereby the product paid out from the press 2 is allowed to travel smoothly and naturally and correctly placed, without any additional controllers. A further advantage of the arrangement of the invention is that the temperature of the sheath can be kept stable in an extremely advantageous way. This can be implemented by placing sprayers 10 in connection with the pulling device to enable the temperature of the sheath to be lowered or raised if desired by adjusting the temperature of the water to be sprayed. By the two- wheel solution of the invention, an extensive cooling surface for the sheath can be achieved, resulting in optimal cooling temperatures. In this way, it is possible to eliminate the disadvantage of the known solutions owing to a poor and unstable cooling capacity which results in a final product with a poor stability.
In connection with the invention, it has been found advantageous to place a motor 11 in connection with the pulling device so as to enable the pulling to be performed directly from the axis of the motor. An advantage of such a solution is that vibrations caused by power transmission clearances can be advantageously minimized. The solution involves a relatively high- powered motor, for example a 4 kW motor. This, however, causes no substan- tial drawbacks.
The above example of application is by no means intended to restrict the invention but the invention can be freely modified within the scope of the claims, it is thus obvious that the arrangement of the invention or its details do not necessarily have to be identical to the ones shown in the figures, but various solutions are feasible. The shifting of the pulling device in a vertical direction can be freely implemented in various ways. The pulling device can be arranged for instance to be placed in particular points of the fibre line by producing suitable mounting points in the floor, for example. The vertical movement of the pulling device can be provided in any suitable way, for instance hydraulically, mechanically, etc. The shifting can be performed manually or by means of a suitable power source. Although the invention is described above by means of a pulling device comprising two wheels, it is obvious that the invention is by no means restricted to such an application. The invention can also be applied by means of different pulling devices, for example a one-wheel application is fully feasible if such an arrangement is necessary, etc. The sur- face of the wheels can be smooth or grooved. The wheels can comprise a wheel deck of several wheels, the wheels of the deck located on the same axis being allowed to rotate with respect to each other. Furthermore, it is to be noted that the invention is by no means restricted to the optic fibre although the invention is described by means of an optic fibre line. Of course, the in- vention can also be applied to other purposes.

Claims

1. An arrangement in connection with a coating line which comprises a fibre payout device (1) from which fibres are arranged to be guided to a press (2) for forming a coating round the fibres, a cooling device (3) for cooling a conductor formed by the coating and the fibres, a pulling device (4) by means of which the conductor formed by the coating and the fibres is pulled further from the press (2), and means for guiding the conductor to the next processing stage after cooling, whereby the pulling device (4) is arranged above the height of the line so as to enable the lowest point of the pulling de- vice (4) to be substantially at the height of the line, characterized in that the pulling device (4) is arranged to be uplifted entirely above the height of the line substantially in a vertical direction.
2. An arrangement as claimed in claim 1, characterized in that the pulling device (4) comprises two wheels (8, 9) which are mounted on horizontal axes and arranged in succession in the direction of movement of the fibres.
3. An arrangement as claimed in claim 2, characterized in that the wheels (8, 9) of the pulling device (4) are arranged on levels having a small angular difference.
4. An arrangement as claimed in any one of claims 1 to 3, c h a r - acterized in that the drawing wheel (8) of the pulling device (4) is directly arranged on the axis of a motor (11 ) which operates as the power source.
5. An arrangement as claimed in any one of claims 1 to 4, c h a r - acterized in that at least one sprayer (10) is arranged in connection with the pulling device (4) for spraying the cooling and/or heating medium across the surface of a product which travels through the pulling device (4).
PCT/FI1999/000240 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line WO1999048829A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP2000537818A JP2002507540A (en) 1998-03-26 1999-03-24 Configurations related to fiber coating lines
CA002326158A CA2326158A1 (en) 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line
BR9909030-9A BR9909030A (en) 1998-03-26 1999-03-24 Arrangement in connection with a fiber coating line
EP99910407A EP1068158B1 (en) 1998-03-26 1999-03-24 Fibre coating line
AT99910407T ATE267778T1 (en) 1998-03-26 1999-03-24 FIBER COATING SYSTEM
US09/646,016 US6569247B1 (en) 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line
DE69917619T DE69917619T2 (en) 1998-03-26 1999-03-24 Fiber coating plant
AU29377/99A AU739152B2 (en) 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line
KR1020007010456A KR20010074455A (en) 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980681A FI116164B (en) 1998-03-26 1998-03-26 Arrangement in joint bath with a fiber coating line
FI980681 1998-03-26

Publications (1)

Publication Number Publication Date
WO1999048829A1 true WO1999048829A1 (en) 1999-09-30

Family

ID=8551380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000240 WO1999048829A1 (en) 1998-03-26 1999-03-24 Arrangement in connection with fibre coating line

Country Status (13)

Country Link
US (1) US6569247B1 (en)
EP (1) EP1068158B1 (en)
JP (1) JP2002507540A (en)
KR (1) KR20010074455A (en)
CN (1) CN1162364C (en)
AT (1) ATE267778T1 (en)
AU (1) AU739152B2 (en)
BR (1) BR9909030A (en)
CA (1) CA2326158A1 (en)
DE (1) DE69917619T2 (en)
ES (1) ES2221742T3 (en)
FI (1) FI116164B (en)
WO (1) WO1999048829A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000023391A2 (en) * 1998-10-21 2000-04-27 Nextrom Holding S.A. Method and arrangement in a fibre coating line
US6816646B2 (en) 2000-12-26 2004-11-09 Nippon Sheet Glass Co., Ltd. Light-sensitive detector and optical demultiplexer

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US8489219B1 (en) 2009-01-30 2013-07-16 Draka Comteq B.V. Process for making loose buffer tubes having controlled excess fiber length and reduced post-extrusion shrinkage
US8625944B1 (en) 2009-05-13 2014-01-07 Draka Comteq, B.V. Low-shrink reduced-diameter buffer tubes
US8625945B1 (en) 2009-05-13 2014-01-07 Draka Comteq, B.V. Low-shrink reduced-diameter dry buffer tubes
CN102654619A (en) * 2012-04-20 2012-09-05 苏州洲通光电科技有限公司 Equipment for manufacturing protective layer of ultrahigh strength reinforced core
CN102722009A (en) * 2012-04-20 2012-10-10 苏州洲通光电科技有限公司 Processing technology for ultrahigh-strength optical cable
CN102654615A (en) * 2012-04-20 2012-09-05 苏州洲通光电科技有限公司 Ultra-high-strength reinforced core optical cable
CN102722007A (en) * 2012-04-20 2012-10-10 苏州洲通光电科技有限公司 Processing technique for ultrahigh-strength reinforced core
CN104570248A (en) * 2015-01-07 2015-04-29 长春烽火技术有限公司 High-speed optical cable sleeve pipe production equipment
CN106003477B (en) * 2016-07-08 2018-07-17 天津立孚光电科技股份有限公司 It is a kind of to lead fine device suitable for secondary coating technique
AT520603A1 (en) * 2017-10-30 2019-05-15 Rosendahl Nextrom Gmbh Device for enveloping a conductor

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US4127370A (en) * 1975-05-14 1978-11-28 The Post Office Apparatus for forming dielectric optical waveguides
EP0424150A2 (en) * 1989-10-20 1991-04-24 Nokia-Maillefer Holding S.A. Method of and apparatus for producing an optical multi-fibre cable element
EP0443701A2 (en) * 1990-02-21 1991-08-28 Siemens Aktiengesellschaft Method of fabricating a sheathed light guide
US5372757A (en) * 1993-09-03 1994-12-13 Tensor Machinery Ltd. Apparatus and method for sheathing optical fibers
US5676892A (en) * 1993-04-14 1997-10-14 E. Kertscher S.A. Installation and method for manufacture of an optical fiber cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127370A (en) * 1975-05-14 1978-11-28 The Post Office Apparatus for forming dielectric optical waveguides
EP0424150A2 (en) * 1989-10-20 1991-04-24 Nokia-Maillefer Holding S.A. Method of and apparatus for producing an optical multi-fibre cable element
EP0443701A2 (en) * 1990-02-21 1991-08-28 Siemens Aktiengesellschaft Method of fabricating a sheathed light guide
US5676892A (en) * 1993-04-14 1997-10-14 E. Kertscher S.A. Installation and method for manufacture of an optical fiber cable
US5372757A (en) * 1993-09-03 1994-12-13 Tensor Machinery Ltd. Apparatus and method for sheathing optical fibers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000023391A2 (en) * 1998-10-21 2000-04-27 Nextrom Holding S.A. Method and arrangement in a fibre coating line
WO2000023391A3 (en) * 1998-10-21 2001-05-31 Nextrom Holding Sa Method and arrangement in a fibre coating line
US6816646B2 (en) 2000-12-26 2004-11-09 Nippon Sheet Glass Co., Ltd. Light-sensitive detector and optical demultiplexer

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Publication number Publication date
CN1295537A (en) 2001-05-16
CN1162364C (en) 2004-08-18
EP1068158B1 (en) 2004-05-26
US6569247B1 (en) 2003-05-27
BR9909030A (en) 2000-12-05
FI980681A0 (en) 1998-03-26
CA2326158A1 (en) 1999-09-30
FI980681A (en) 1999-09-27
EP1068158A1 (en) 2001-01-17
JP2002507540A (en) 2002-03-12
DE69917619T2 (en) 2005-06-23
AU739152B2 (en) 2001-10-04
ES2221742T3 (en) 2005-01-01
KR20010074455A (en) 2001-08-04
DE69917619D1 (en) 2004-07-01
AU2937799A (en) 1999-10-18
FI116164B (en) 2005-09-30
ATE267778T1 (en) 2004-06-15

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