GB586387A - Improved apparatus for the extrusion of non-metallic plastic material - Google Patents

Improved apparatus for the extrusion of non-metallic plastic material

Info

Publication number
GB586387A
GB586387A GB2873/46A GB287346A GB586387A GB 586387 A GB586387 A GB 586387A GB 2873/46 A GB2873/46 A GB 2873/46A GB 287346 A GB287346 A GB 287346A GB 586387 A GB586387 A GB 586387A
Authority
GB
United Kingdom
Prior art keywords
tube
electrode
earth electrode
rutile
heated
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
GB2873/46A
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 Insulated Cables Ltd
Original Assignee
British Insulated Cables 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 Insulated Cables Ltd filed Critical British Insulated Cables Ltd
Priority to GB2873/46A priority Critical patent/GB586387A/en
Publication of GB586387A publication Critical patent/GB586387A/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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

586,387. Dielectric heating. BRITISH INSULATED CABLES, Ltd., PACKER, J. L., and STEWARD, H. M. Jan. 17, 1944. No. 2873/46. Divided out of 586,158. [Class 39 (iii)] [Also in Groups V and XXXVI] Fig. 1: A high-frequency heater comprises a tube 41 of low-loss ceramic material such as rutile, having its exterior surface 49 metallised and constituting the high-tension electrode. The earth electrode is a metal tube 48 between which and the tube 41 material being heated is forced by the screw 2. An electric coupling C, [see Group XXXVI], extends through a tube 44 which encloses the heater. The earth electrode may be faced with heatresisting insulating material in which heat is generated by the highfrequency field (to prevent chilling of material being heated). Fig. 2 shows a modification in which the high-tension electrode is the metallised inner surface 149 of a rutile tube 141, the earth electrode being an outer metal tube 144.
GB2873/46A 1944-01-17 1944-01-17 Improved apparatus for the extrusion of non-metallic plastic material Expired GB586387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2873/46A GB586387A (en) 1944-01-17 1944-01-17 Improved apparatus for the extrusion of non-metallic plastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2873/46A GB586387A (en) 1944-01-17 1944-01-17 Improved apparatus for the extrusion of non-metallic plastic material

Publications (1)

Publication Number Publication Date
GB586387A true GB586387A (en) 1947-03-17

Family

ID=9747616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2873/46A Expired GB586387A (en) 1944-01-17 1944-01-17 Improved apparatus for the extrusion of non-metallic plastic material

Country Status (1)

Country Link
GB (1) GB586387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305893A (en) * 1964-07-09 1967-02-28 James F Machen Extruder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305893A (en) * 1964-07-09 1967-02-28 James F Machen Extruder

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