GB1082538A - Improvements in or relating to cross-heads for extruders - Google Patents

Improvements in or relating to cross-heads for extruders

Info

Publication number
GB1082538A
GB1082538A GB46425/64A GB4642564A GB1082538A GB 1082538 A GB1082538 A GB 1082538A GB 46425/64 A GB46425/64 A GB 46425/64A GB 4642564 A GB4642564 A GB 4642564A GB 1082538 A GB1082538 A GB 1082538A
Authority
GB
United Kingdom
Prior art keywords
cross
die
core tube
groove
path
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
GB46425/64A
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 GB46425/64A priority Critical patent/GB1082538A/en
Publication of GB1082538A publication Critical patent/GB1082538A/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
    • 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
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • 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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes

Landscapes

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

Abstract

1,082,538. Extrusion cross-head dies. N. OKAZAKI. Nov. 13, 1964, No. 46425/64. Heading B5A. To obtain a uniformly cross-sectioned tube of synthetic plastic or rubber, or sheathing of the same material for a wire 10, an extrusion crosshead 1 is provided with a rotatable core tube 9 and a stationary sleeve 4 having helical grooves 5, 5<SP>1</SP>, the bottom surfaces of which diverge with respect to the longitudinal axis of the crosshead in a direction towards die 8 such that the difference of flow path across each groove is compensated for. For example, considering groove 5, one path a, b, i, j and f is two turns in length while path c, d, k and l is one and a half turns in length. A single helical groove only may be provided, Fig. 5 (not shown), and an auxiliary screw (20), Fig. 4 (not shown), may be provided on the core tube adjacent the die to assist the feed and allow the cross-head to be emptied of moulding material. In a further embodiment, Figs. 6-8 (not shown), two wires (16, 16<SP>1</SP>) are coated simultaneously and subsequently twisted to form a single strand (19) by rotation of die (7) having apertures (13, 13<SP>1</SP>) and a core tube having bores (11<SP>1</SP>, 11<SP>11</SP>).
GB46425/64A 1964-11-13 1964-11-13 Improvements in or relating to cross-heads for extruders Expired GB1082538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB46425/64A GB1082538A (en) 1964-11-13 1964-11-13 Improvements in or relating to cross-heads for extruders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46425/64A GB1082538A (en) 1964-11-13 1964-11-13 Improvements in or relating to cross-heads for extruders

Publications (1)

Publication Number Publication Date
GB1082538A true GB1082538A (en) 1967-09-06

Family

ID=10441222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46425/64A Expired GB1082538A (en) 1964-11-13 1964-11-13 Improvements in or relating to cross-heads for extruders

Country Status (1)

Country Link
GB (1) GB1082538A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001244A1 (en) * 1983-09-23 1985-03-28 A/S So^/Nnichsen Ro^/Rvalseverket Extruder assembly
EP0400281A2 (en) * 1989-05-29 1990-12-05 HERMANN BERSTORFF Maschinenbau GmbH Device for continuously jacketing cylindrical workpieces with elastic material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001244A1 (en) * 1983-09-23 1985-03-28 A/S So^/Nnichsen Ro^/Rvalseverket Extruder assembly
US4591323A (en) * 1983-09-23 1986-05-27 A/S Sonnichsen Rorvalseverket Extruder and calibrating apparatus for making ribbed or grooved pipe
EP0400281A2 (en) * 1989-05-29 1990-12-05 HERMANN BERSTORFF Maschinenbau GmbH Device for continuously jacketing cylindrical workpieces with elastic material
EP0400281A3 (en) * 1989-05-29 1991-01-30 HERMANN BERSTORFF Maschinenbau GmbH Device for continuously jacketing cylindrical workpieces with elastic material

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