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GB1448130A - Providing an optical fibre with a thermoplastic sheath - Google Patents

Providing an optical fibre with a thermoplastic sheath

Info

Publication number
GB1448130A
GB1448130A GB5847573A GB5847573A GB1448130A GB 1448130 A GB1448130 A GB 1448130A GB 5847573 A GB5847573 A GB 5847573A GB 5847573 A GB5847573 A GB 5847573A GB 1448130 A GB1448130 A GB 1448130A
Authority
GB
United Kingdom
Prior art keywords
fibre
die
extrusion
terephthalate
plastics
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
GB5847573A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB5847573A priority Critical patent/GB1448130A/en
Publication of GB1448130A publication Critical patent/GB1448130A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

1448130 Extrusion sheathing of optical fibres STANDARD TELEPHONES & CABLES Ltd 18 Dec 1973 58475/73 Heading B5A [Also in Division G2] A glass optical communication fibre is coated by extrusion, with plastics which may comprise polyethylene terephthalate, polypropylene, polytetramethylene terephthalate, or 1-4 cyclohexylene terephthalate / isophthalate copolymer. The extrusion is effected from a die 10 into which the fibre is delivered through a point 11 terminating, upstream of the die outlet, in a parallel sided tubing 12, e.g. a hypodermic needle, secured at a screw threaded portion 13 to facilitate threading of the fibre. The coating may be effected directly upon fibre delivered from a glass fibre drawing apparatus, in which the fibre is drawn from a melt and annealed and cooled before delivery to the head at the fibre drawing speed. Alternatively, the fibre is fed tangentially from a driven or free running spool and through a sizing die to the extrusion die, the coated fibre being drawn from the die through an oven to anneal the plastics, and through a cooling trough to a storage reel. Cooling may be in air and water.
GB5847573A 1973-12-18 1973-12-18 Providing an optical fibre with a thermoplastic sheath Expired GB1448130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5847573A GB1448130A (en) 1973-12-18 1973-12-18 Providing an optical fibre with a thermoplastic sheath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5847573A GB1448130A (en) 1973-12-18 1973-12-18 Providing an optical fibre with a thermoplastic sheath

Publications (1)

Publication Number Publication Date
GB1448130A true GB1448130A (en) 1976-09-02

Family

ID=10481713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5847573A Expired GB1448130A (en) 1973-12-18 1973-12-18 Providing an optical fibre with a thermoplastic sheath

Country Status (1)

Country Link
GB (1) GB1448130A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133737A (en) * 1983-01-15 1984-08-01 Plessey Co Plc Improvements relating to the manufacture of magnetic sensing optical devices
US4474638A (en) * 1982-02-26 1984-10-02 Siemens Aktiengesellschaft Device for manufacturing electrical and optical cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474638A (en) * 1982-02-26 1984-10-02 Siemens Aktiengesellschaft Device for manufacturing electrical and optical cables
GB2133737A (en) * 1983-01-15 1984-08-01 Plessey Co Plc Improvements relating to the manufacture of magnetic sensing optical devices

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee