GB1271559A - Die assembly - Google Patents

Die assembly

Info

Publication number
GB1271559A
GB1271559A GB55704/69A GB5570469A GB1271559A GB 1271559 A GB1271559 A GB 1271559A GB 55704/69 A GB55704/69 A GB 55704/69A GB 5570469 A GB5570469 A GB 5570469A GB 1271559 A GB1271559 A GB 1271559A
Authority
GB
United Kingdom
Prior art keywords
mandrel
passageway
die head
annular
extrudate
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
GB55704/69A
Inventor
James Herbert Davidson
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.)
Ethyl Corp
Original Assignee
Ethyl Corp
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 Ethyl Corp filed Critical Ethyl Corp
Priority to GB55704/69A priority Critical patent/GB1271559A/en
Publication of GB1271559A publication Critical patent/GB1271559A/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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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

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

Abstract

1,271,559. Extrusion dies. ETHYL CORP. 13 Nov., 1969, No. 55704/69, Heading B5A. A tube-extrusion die head, particularly intended for the production of thermoplastic film, comprises a stepped housing 11 and a correspondingly stepped mandrel 12 which define a material passageway 18 therebetween, the passageway being adjustable at an annular shoulder 14 by the provision of an annular restrictor 30 reciprocable axially of the die head by rotation of cap screws 35. The die head is connected to an extruder by means of a threaded bore 21, and material passes to passageway 18 via radial bores 23, formed either as shown, in a one-piece mandrel, or in a separate mandrel portion. Restrictor 30 is adjusted to remove weld lines in the material and the thickness of the extrudate is adjusted on radial movement of ring 43 by rotation of bolts 46 after screws 44 have been loosened. Mandrel 12 may have a conduit for pressure fluid to inflate the extrudate. Ring 43 may be heated by circulation of, e.g., steam, hot oil, in annular hollows 51, chamber 52 on housing 11 may carry heating or cooling media and mandrel 12 may be heated, e.g. by steam, hot oil, or electric strip or rod heaters.
GB55704/69A 1969-11-13 1969-11-13 Die assembly Expired GB1271559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB55704/69A GB1271559A (en) 1969-11-13 1969-11-13 Die assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB55704/69A GB1271559A (en) 1969-11-13 1969-11-13 Die assembly

Publications (1)

Publication Number Publication Date
GB1271559A true GB1271559A (en) 1972-04-19

Family

ID=10474648

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55704/69A Expired GB1271559A (en) 1969-11-13 1969-11-13 Die assembly

Country Status (1)

Country Link
GB (1) GB1271559A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121719A (en) * 1982-03-31 1984-01-04 Reifenhaeuser Masch Blowing head for plastics foil
EP0789999A2 (en) 1996-02-16 1997-08-20 Hoechst Schering AgrEvo GmbH Herbicidal oil suspension concentrates
CN112062648A (en) * 2020-09-25 2020-12-11 江南工业集团有限公司 Device and method for coating surface of explosive column

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121719A (en) * 1982-03-31 1984-01-04 Reifenhaeuser Masch Blowing head for plastics foil
EP0789999A2 (en) 1996-02-16 1997-08-20 Hoechst Schering AgrEvo GmbH Herbicidal oil suspension concentrates
CN112062648A (en) * 2020-09-25 2020-12-11 江南工业集团有限公司 Device and method for coating surface of explosive column
CN112062648B (en) * 2020-09-25 2023-09-05 江南工业集团有限公司 Grain surface coating device and method

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