GB810028A - Radial extrusion die - Google Patents

Radial extrusion die

Info

Publication number
GB810028A
GB810028A GB24334/56A GB2433456A GB810028A GB 810028 A GB810028 A GB 810028A GB 24334/56 A GB24334/56 A GB 24334/56A GB 2433456 A GB2433456 A GB 2433456A GB 810028 A GB810028 A GB 810028A
Authority
GB
United Kingdom
Prior art keywords
crown
core
passage
housing
flange
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
GB24334/56A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB24334/56A priority Critical patent/GB810028A/en
Publication of GB810028A publication Critical patent/GB810028A/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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets

Landscapes

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

Abstract

<PICT:0810028/IV (a)/1> A die head for the extrusion of organic thermoplastic sheet comprises three coaxial parts; an internally-cylindrical housing 12 forming an extension of the outlet 10 of a plastics extruder or pump, a core 16 fixedly spaced from the housing to provide an annular passage 30 and to distribute plastic material substantially uniformly therein, and a crown 20 secured to and spanning the core 16 so that between the adjacent faces of the crown and housing is formed a radial passage 26 into which the core or crown or both divert the plastic material from the annular passage 30. The crown is rigid at the centre and is made yieldable near its circumference so that by adjusting pressure and tension means the width of the passage 26 can be altered. An annular groove 41 and radial grooves (not shown) are machined in a flange 40 on the crown, to make it yieldable under the action of screws 47, 48, threading into radial bars 45 attached to the rigid part of the crown and into the flange 40. The crown may be heated by heating fluid passing through a passage 52 in a ring carried by the bars 45. The core 16 is rigidly attached to the housing 12 by the perforated flange 17, and the crown 20 is accurately centred on the core by dowel pins 21 and is secured thereto by the threaded pilot shaft 22 and its lock-nut 23. Specification 798.194 is referred to. Reference has been directed by the Comptroller to Specification 755,983.
GB24334/56A 1956-08-08 1956-08-08 Radial extrusion die Expired GB810028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24334/56A GB810028A (en) 1956-08-08 1956-08-08 Radial extrusion die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24334/56A GB810028A (en) 1956-08-08 1956-08-08 Radial extrusion die

Publications (1)

Publication Number Publication Date
GB810028A true GB810028A (en) 1959-03-11

Family

ID=10210077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24334/56A Expired GB810028A (en) 1956-08-08 1956-08-08 Radial extrusion die

Country Status (1)

Country Link
GB (1) GB810028A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236173B (en) * 1960-12-02 1967-03-09 Union Carbide Corp Press head with an annular gap nozzle for the production of plastic foils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236173B (en) * 1960-12-02 1967-03-09 Union Carbide Corp Press head with an annular gap nozzle for the production of plastic foils

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