GB500093A - Improvements in and relating to extrusion devices - Google Patents

Improvements in and relating to extrusion devices

Info

Publication number
GB500093A
GB500093A GB15472/38A GB1547238A GB500093A GB 500093 A GB500093 A GB 500093A GB 15472/38 A GB15472/38 A GB 15472/38A GB 1547238 A GB1547238 A GB 1547238A GB 500093 A GB500093 A GB 500093A
Authority
GB
United Kingdom
Prior art keywords
die
opening
extrusion
passages
central
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
GB15472/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB500093A publication Critical patent/GB500093A/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
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

500,093. Extrusion machines. BRITISH THOMSON HOUSTON CO., Ltd. May 24, 1938, No. 15472. Convention date, May 26, 1937. [Class 87 (ii)] An extrusion device for covering electric conductors &c. with plastic material comprises a die having a central extrusion opening and a plurality of auxiliary passages surrounding the same for equalizing the flow of material. The material is fed by a worm 2 into a chamber 3 in one side of which a steel die 13 is retained by a threaded sleeve 9 while the other side is fitted with a guide holder 7 supporting a tubular sleeve 11. The die 13 contains a central opening 20 which determines the diameter of the covering and a plurality of smaller holes 21 which are arranged round the opening 20 and diverge outwardly from the chamber 3. A leader 12, secured to the end of the sleeve 11, is also supported in the die housing and has a central hole 25 for guiding the conductor wire and a number of parallel passages 26, arranged concentrically therearound, through which the material is fed. The die 13 and leader 12 have conical surfaces facing each -other. In a modification, Fig. 3, the passages 26 may be open on the outside and may lead into spaces 28 which reduce the resistance to the flow of material.
GB15472/38A 1937-05-26 1938-05-24 Improvements in and relating to extrusion devices Expired GB500093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US500093XA 1937-05-26 1937-05-26

Publications (1)

Publication Number Publication Date
GB500093A true GB500093A (en) 1939-02-02

Family

ID=21962901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15472/38A Expired GB500093A (en) 1937-05-26 1938-05-24 Improvements in and relating to extrusion devices

Country Status (1)

Country Link
GB (1) GB500093A (en)

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