GB1004406A - Improvements in or relating to extrusion of plastics - Google Patents

Improvements in or relating to extrusion of plastics

Info

Publication number
GB1004406A
GB1004406A GB40812/62A GB4081262A GB1004406A GB 1004406 A GB1004406 A GB 1004406A GB 40812/62 A GB40812/62 A GB 40812/62A GB 4081262 A GB4081262 A GB 4081262A GB 1004406 A GB1004406 A GB 1004406A
Authority
GB
United Kingdom
Prior art keywords
chamber
extruding
rod
compression chamber
compression
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
GB40812/62A
Inventor
Stanley Harold Goward
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.)
BTR Industries Ltd
Original Assignee
BTR Industries 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 BTR Industries Ltd filed Critical BTR Industries Ltd
Priority to GB40812/62A priority Critical patent/GB1004406A/en
Publication of GB1004406A publication Critical patent/GB1004406A/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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene

Landscapes

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

Abstract

1,004,406. Extruding plastics tubing. BTR. INDUSTRIES Ltd. Oct. 23, 1963 [Oct. 29, 1962], No. 40812/62. Heading B5A. Polytetrafluoroethylene tubing is manufactured by preforming a polytetrafluorethylene composition by compression in a chamber, extruding a solid rod from the preformed material, coiling the rod formed around a central pin within the compression chamber of a conventional extruder and extruding the tube which is then sintered. Preferably, the extruded rod is passed through a bath of solvent, e.g. naphtha, before it is introduced into the compression chamber. In an alternative process the extruded rod may be coiled around a central pin a secured preforming chamber, compressed and then introduced into the compression chamber of the extruder.
GB40812/62A 1962-10-29 1962-10-29 Improvements in or relating to extrusion of plastics Expired GB1004406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB40812/62A GB1004406A (en) 1962-10-29 1962-10-29 Improvements in or relating to extrusion of plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40812/62A GB1004406A (en) 1962-10-29 1962-10-29 Improvements in or relating to extrusion of plastics

Publications (1)

Publication Number Publication Date
GB1004406A true GB1004406A (en) 1965-09-15

Family

ID=10416746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40812/62A Expired GB1004406A (en) 1962-10-29 1962-10-29 Improvements in or relating to extrusion of plastics

Country Status (1)

Country Link
GB (1) GB1004406A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218034A (en) * 1988-05-04 1989-11-08 Atomic Energy Authority Uk An extrusion process and apparatus therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218034A (en) * 1988-05-04 1989-11-08 Atomic Energy Authority Uk An extrusion process and apparatus therefor
GB2218034B (en) * 1988-05-04 1992-08-19 Atomic Energy Authority Uk An extrusion process

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