GB652413A - Improvements in and relating to extrusion devices - Google Patents

Improvements in and relating to extrusion devices

Info

Publication number
GB652413A
GB652413A GB1141/48A GB114148A GB652413A GB 652413 A GB652413 A GB 652413A GB 1141/48 A GB1141/48 A GB 1141/48A GB 114148 A GB114148 A GB 114148A GB 652413 A GB652413 A GB 652413A
Authority
GB
United Kingdom
Prior art keywords
support
die
frusto
strainer
class
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
GB1141/48A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1141/48A priority Critical patent/GB652413A/en
Publication of GB652413A publication Critical patent/GB652413A/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

Abstract

652,413. Extrusion machines. LIPSCOMB, R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 14, 1948, No. 1141. [Class 87 (ii)] In a machine for extruding plastic material in the form of a tube, the outer die 13 and the central core die or point nose 6 are formed with frusto-conical or frusto-pyramidal surfaces which abut against mating surfaces formed on a support 10 which is rigidly secured to the rest of the machine, the support 10 being in the form of concentric hollow cylinders joined towards one end by a web provided with holes 15 for the passage of plastic material. The dies 6, 13 are thus accurately located with respect to each other. The die 13 may be held in place by a screw cap or bolts 12 passing through lugs in a cap 11 or in the die itself. The core die 6 has a stem passing through a hole in the support 10 and is secured by a nut 9, the outer surface of which is shaped to merge smoothly with the support. Passages 8, 7 are provided for the passage of fluid into the extruded tube to assist in maintaining its shape. A strainer 3 is provided; alternatively the holes 15 may be sufficiently small and numerous to render a strainer unnecessary. Specifications 27923/11, [Class 83 (iv)], 548,861 and 559,153 are referred to.
GB1141/48A 1948-01-14 1948-01-14 Improvements in and relating to extrusion devices Expired GB652413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1141/48A GB652413A (en) 1948-01-14 1948-01-14 Improvements in and relating to extrusion devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1141/48A GB652413A (en) 1948-01-14 1948-01-14 Improvements in and relating to extrusion devices

Publications (1)

Publication Number Publication Date
GB652413A true GB652413A (en) 1951-04-25

Family

ID=9716897

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1141/48A Expired GB652413A (en) 1948-01-14 1948-01-14 Improvements in and relating to extrusion devices

Country Status (1)

Country Link
GB (1) GB652413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007017166A1 (en) * 2005-08-05 2007-02-15 Wavin B.V. Extruded microcellular polymer foam pipe ; method of making and die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007017166A1 (en) * 2005-08-05 2007-02-15 Wavin B.V. Extruded microcellular polymer foam pipe ; method of making and die

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