GB1518082A - Methods and apparatus for covering filaments - Google Patents

Methods and apparatus for covering filaments

Info

Publication number
GB1518082A
GB1518082A GB28795/74A GB2879574A GB1518082A GB 1518082 A GB1518082 A GB 1518082A GB 28795/74 A GB28795/74 A GB 28795/74A GB 2879574 A GB2879574 A GB 2879574A GB 1518082 A GB1518082 A GB 1518082A
Authority
GB
United Kingdom
Prior art keywords
filament
tape
tapes
heated
covered
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.)
Expired
Application number
GB28795/74A
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB28795/74A priority Critical patent/GB1518082A/en
Priority to NL7507580A priority patent/NL7507580A/en
Priority to DE19752528517 priority patent/DE2528517A1/en
Priority to JP50079937A priority patent/JPS5124244A/ja
Priority to CA230,421A priority patent/CA1065137A/en
Priority to FR7520444A priority patent/FR2276410A1/en
Publication of GB1518082A publication Critical patent/GB1518082A/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

1518082 Covering tapes POST OFFICE 20 June 1975 [28 June 1974] 28795/74 Heading B8G To produce a covered filament, a filament is supplied from a melt, at least one tape is applied to the filament to envelop the filament, the or each tape extending in the longitudinal direction of the filament, applying heat to at least one of the tapes, and closing the envelope in the longitudinal direction, the or each strip comprising a bonding strip of plastics material with a high melting point and a coating of low melting point plastics material forming a bonding material, the or each tape being applied to the filament with the coating in contact with the filament, and in the covered filament the or each tape is partially bonded so that it can be peeled from the filament. Fibre optic filament 1, Fig. 1, pulled from a melt, engages tape 3 in the grooved periphery of driven pulley 2, and is carried to the flat rim of driven roller 4 where tapes 3, 5, of plastics material engage. The filament is pulled by the tapes although at least part of the pull may be applied direct to the filament. Several filaments may be covered by the tapes, e.g. using a multi-grooved pulley. Alternatively, only tape 3 may be used, the tape being folded and sealed after leaving pulley 2. In Fig. 2 covered filament 7 is turned through 90 degrees between the roller pairs. To heat seal the tapes, Fig. 3, filament 15 and tape 17 engage on the flat rim of driven wheel 16, and further engage tape 21 on the grooved rim of freely rotatable annulus 18 heated by induction heater 22. Wheel 16 may be replaced by a second heated annulus. The tapes, of plastics material have a low melting point coating on one side. Wheel 24, spring-biased against driven wheel 23 which pulls the filament, seals the tapes. Tape tension is maintained by reel brakes 38, 44, driven rollers 39, 45, and vertically slidable pulleys 41, 47. Sensors 51, 52, respond to the pulley positions and adjust the tape feed. The tape heating may be varied so that the filament is partially bonded to the tapes, or filament bonding may be prevented by providing annulus 18 with a groove to bridge the filament. The tapes may be heated by a hot air jet, a flame-heated PTFE roller, or dielectric heating, or. by contacting electrodes or by ultrasonic means.
GB28795/74A 1974-06-28 1974-06-28 Methods and apparatus for covering filaments Expired GB1518082A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB28795/74A GB1518082A (en) 1974-06-28 1974-06-28 Methods and apparatus for covering filaments
NL7507580A NL7507580A (en) 1974-06-28 1975-06-25 METHOD AND DEVICE FOR THE MANUFACTURE OF COATED FILAMENTS.
DE19752528517 DE2528517A1 (en) 1974-06-28 1975-06-26 METHOD AND DEVICE FOR MANUFACTURING A COVERED FIBER
JP50079937A JPS5124244A (en) 1974-06-28 1975-06-27
CA230,421A CA1065137A (en) 1974-06-28 1975-06-27 Methods and apparatus for coating filaments
FR7520444A FR2276410A1 (en) 1974-06-28 1975-06-30 IMPROVEMENTS IN FILAMENT COATING PROCESSES AND APPARATUS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28795/74A GB1518082A (en) 1974-06-28 1974-06-28 Methods and apparatus for covering filaments

Publications (1)

Publication Number Publication Date
GB1518082A true GB1518082A (en) 1978-07-19

Family

ID=10281299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28795/74A Expired GB1518082A (en) 1974-06-28 1974-06-28 Methods and apparatus for covering filaments

Country Status (6)

Country Link
JP (1) JPS5124244A (en)
CA (1) CA1065137A (en)
DE (1) DE2528517A1 (en)
FR (1) FR2276410A1 (en)
GB (1) GB1518082A (en)
NL (1) NL7507580A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461540A (en) * 1980-01-22 1984-07-24 U.S. Philips Corporation Optical communication element and optical communication cable comprising such an element
CN105198205A (en) * 2015-09-09 2015-12-30 郑州翎羽新材料有限公司 Fiber dispersion device for fiberglass
CN106149072A (en) * 2016-07-19 2016-11-23 苏州星原纺织有限公司 Nascent chemical-fibre drafting device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8403629A (en) * 1984-05-23 1985-12-16 Philips Nv OPTICAL TAPE CABLE, METHOD FOR MANUFACTURING IT AND AN OPTICAL CABLE COMPOSED OF SEVERAL TAPE CABLES.
DE3529085C2 (en) * 1985-08-14 1993-10-21 Philips Patentverwaltung Device for reversing stranding (SZ stranding) at least one stranding element of a cable, in particular a stranding element containing optical fibers
DE102022128821A1 (en) 2022-10-31 2024-05-02 Fibrecoat Gmbh Coated inorganic filaments and their production

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4914134A (en) * 1972-05-17 1974-02-07
JPS4918338A (en) * 1972-06-12 1974-02-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461540A (en) * 1980-01-22 1984-07-24 U.S. Philips Corporation Optical communication element and optical communication cable comprising such an element
CN105198205A (en) * 2015-09-09 2015-12-30 郑州翎羽新材料有限公司 Fiber dispersion device for fiberglass
CN105198205B (en) * 2015-09-09 2017-12-29 郑州翎羽新材料有限公司 A kind of fiber dispersal device for glass fibre
CN106149072A (en) * 2016-07-19 2016-11-23 苏州星原纺织有限公司 Nascent chemical-fibre drafting device

Also Published As

Publication number Publication date
DE2528517A1 (en) 1976-01-15
JPS5124244A (en) 1976-02-27
FR2276410A1 (en) 1976-01-23
NL7507580A (en) 1975-12-30
FR2276410B1 (en) 1980-06-27
CA1065137A (en) 1979-10-30

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee