GB997970A - Apparatus for simultaneously extruding plastic layers on a core - Google Patents

Apparatus for simultaneously extruding plastic layers on a core

Info

Publication number
GB997970A
GB997970A GB40990/61A GB4099061A GB997970A GB 997970 A GB997970 A GB 997970A GB 40990/61 A GB40990/61 A GB 40990/61A GB 4099061 A GB4099061 A GB 4099061A GB 997970 A GB997970 A GB 997970A
Authority
GB
United Kingdom
Prior art keywords
plastic
die
core
cylinders
passages
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
GB40990/61A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB997970A publication Critical patent/GB997970A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/272—Cleaning; Purging; Avoiding contamination of dies
    • 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
    • B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
    • 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
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables

Landscapes

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

Abstract

997,970. Coating cores. WESTERN ELECTRIC CO. Inc. Nov. 16, 1961 [Nov. 18, 1960], No. 40990/61. Heading B5A. Apparatus for simultaneously extruding successive layers of plastic materials on to a core 11 comprises an extrusion head 13 through which the core 11 is drawn, separate extrusion cylinders 16, 17 having screws for feeding a first plastic material 68, e.g. polyethylene, into the head 13 at the entrance to a die 111 to form a first layer on the core 11 and feeding a second plastic 69, e.g. polyvinyl chloride, to the exit end of the die 111 to form a second layer, and means for movably mounting the entrance end of at least one cylinder 16, 17 to accommodate axial expansion. The core 11 is guided and drawn through the head 13 and a cooling trough (Fig. 1, not shown) and simultaneously the plastics 68, 69 are advanced by rotary water cooled screws through the cylinders 16, 17 provided with screens and breaker plates, to enter the head portion 101 via the passages 94, 96. The cylinders 16, 17 are provided with heaters 59 and are supported at their entrance ends by cooled housings 24, 26 which are slidably mounted on surfaces 38, 39 and guided on keys 43 thereby to accommodate the expansion of cylinders 16, 17. The head portion 101 comprises a generally cylindrical extrusion passage 102 extending transversely of the cylinders 16, 17 and provided with threaded portions 103, 106 and plain portions 104. The die 111 is retained in a threaded insert 107 having a heat insulating portion 105 with its entrance portion co-operating with the end portion 122 of an axially adjustable guiding member 131 to form four segmental passages 127 through which the first plastic 68 is fed, and its exit end co-operating with the entrance portion of an axially adjustable, second die 141 to form four segmental passages 151 through which the second plastic 69 is fed. The core 11 is coated with a layer of first plastic 68 during passage through the die 111 and thereafter a layer of second plastic 69 is applied and shaped during passage through the second die 141, a velocity gradient being set up in the flow of second plastic 69 through the passages 151 due to the difference in temperature between the discs 111 and 141 and the higher velocity adjacent the tip 157 of the die 111 serving to prevent the accumulation of drool. Operational temperatures and pressures and dimensions of the dies and passages are specified. Specification 810,586 is referred to.
GB40990/61A 1960-11-18 1961-11-16 Apparatus for simultaneously extruding plastic layers on a core Expired GB997970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70323A US3121255A (en) 1960-11-18 1960-11-18 Apparatus for extruding plastic compounds

Publications (1)

Publication Number Publication Date
GB997970A true GB997970A (en) 1965-07-14

Family

ID=22094594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40990/61A Expired GB997970A (en) 1960-11-18 1961-11-16 Apparatus for simultaneously extruding plastic layers on a core

Country Status (6)

Country Link
US (1) US3121255A (en)
AT (1) AT243885B (en)
DE (1) DE1554979B1 (en)
ES (1) ES272459A1 (en)
GB (1) GB997970A (en)
SE (1) SE305311B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114311601A (en) * 2021-12-22 2022-04-12 安庆市悦发管业有限公司 Processing die for X-shaped cross HDPE winding pipe lined with inner liner

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222721A (en) * 1962-06-25 1965-12-14 Anaconda Wire & Cable Co Dual extrusion apparatus
JPS416915B1 (en) * 1963-02-13 1966-04-19
US3256562A (en) * 1964-08-10 1966-06-21 Western Electric Co Extruding system
US3327349A (en) * 1965-08-30 1967-06-27 Dow Chemical Co Extrusion adaptor
US3334382A (en) * 1965-08-30 1967-08-08 Dow Chemical Co Extrusion adapter
US3333037A (en) * 1965-09-07 1967-07-25 Union Carbide Corp Process for the production of alkali metal composite electrical conductors
NL6602392A (en) * 1965-09-30 1967-03-31
US3315306A (en) * 1965-10-15 1967-04-25 Dow Chemical Co Apparatus for the production of multilayer film
US3495300A (en) * 1966-04-13 1970-02-17 Stauffer Wacker Silicone Corp Apparatus for manufacture of insulated wire products and the like
CH477274A (en) * 1968-08-08 1969-08-31 Barmag Barmer Maschf Device for the production of multilayer blown films or tubes
US3947173A (en) * 1972-09-13 1976-03-30 Western Electric Company, Inc. Apparatus for extruding concentric plastic sheaths
US3903233A (en) * 1972-09-13 1975-09-02 Western Electric Co Method of and apparatus for extruding concentric plastic sheaths
US4132756A (en) * 1974-12-20 1979-01-02 Industrie Pirelli, S.P.A. Process for extruding plastomeric or elastomeric material on filaments
SE404103B (en) * 1976-07-23 1978-09-18 Ericsson Telefon Ab L M METHOD, INCLUDING SPRAY PROPHILING AND COOLING, IN EXTRACTION OF POLYMER MATERIAL INTENDED FOR USE IN MANUFACTURE OF HIGH VOLTAGE CABLE
FR2492729A1 (en) * 1980-10-27 1982-04-30 Telecommunications Sa Twin extruder system for covering electric cables - with independent transverse linear alignment of the die for the outer coating
US4585407A (en) * 1983-10-03 1986-04-29 Pirelli Cable Corporation Guide for electric cable insulation extrusion head
US5215698A (en) * 1991-11-25 1993-06-01 Americraft Machined Products, Inc. Extrusion tool and method of extrusion coating
US5346383A (en) * 1994-01-28 1994-09-13 Southwire Company Low shear free-flow extruder breaker plate
ITMI20121679A1 (en) * 2012-10-08 2014-04-09 Saipem Spa METHOD, APPARATUS AND WORK STATION TO APPLY A PROTECTIVE SHEET OF POLYMERIC MATERIAL TO A PIPE AND PROGRAM FOR PROCESSING TO PERFORM THE METHOD
CN113199725B (en) * 2021-04-07 2022-11-29 广西梧州国龙再生资源发展有限公司 PET plastic sheet extruder and working method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1322464A (en) * 1919-11-18 Hose making machine
BE531375A (en) * 1900-01-01
US876755A (en) * 1907-03-26 1908-01-14 Arthur H Hyde Wire-coating machine.
US965507A (en) * 1908-12-26 1910-07-26 Frederic Ecaubert Escapement-regulator.
US2501690A (en) * 1947-12-09 1950-03-28 Carter Products Corp Method and apparatus for making multiple layer plastic conduits
US2511986A (en) * 1948-04-30 1950-06-20 Western Electric Co Apparatus for extruding organic plastic material
US2695422A (en) * 1951-12-12 1954-11-30 Western Electric Co Apparatus for advancing and working elastomer compounds
US2790202A (en) * 1952-03-31 1957-04-30 Lorenian Zareh Method and apparatus for manufacturing pencils
DE957048C (en) * 1952-06-17 1957-01-31 S Lavorazione Materie Plastich Extrusion press for the production of a multi-layer coating on wires or cables
US2902754A (en) * 1955-07-07 1959-09-08 Lorenian Eugenia Manufacture of slidable-core pencils

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114311601A (en) * 2021-12-22 2022-04-12 安庆市悦发管业有限公司 Processing die for X-shaped cross HDPE winding pipe lined with inner liner
CN114311601B (en) * 2021-12-22 2024-02-09 安庆市悦发管业有限公司 Processing die for X-shaped crossed HDPE winding pipe lining

Also Published As

Publication number Publication date
DE1554979B1 (en) 1970-10-01
US3121255A (en) 1964-02-18
ES272459A1 (en) 1962-03-16
SE305311B (en) 1968-10-21
AT243885B (en) 1965-12-10

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