WO2001064420A3 - Extrusion head for tubular articles made of plastic materials - Google Patents

Extrusion head for tubular articles made of plastic materials Download PDF

Info

Publication number
WO2001064420A3
WO2001064420A3 PCT/EP2001/002209 EP0102209W WO0164420A3 WO 2001064420 A3 WO2001064420 A3 WO 2001064420A3 EP 0102209 W EP0102209 W EP 0102209W WO 0164420 A3 WO0164420 A3 WO 0164420A3
Authority
WO
WIPO (PCT)
Prior art keywords
fluidic
articles made
head
extrusion head
tubular articles
Prior art date
Application number
PCT/EP2001/002209
Other languages
French (fr)
Other versions
WO2001064420A2 (en
Inventor
Camillo Lupi
Original Assignee
Tecnomatic Spa
Camillo Lupi
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 Tecnomatic Spa, Camillo Lupi filed Critical Tecnomatic Spa
Priority to EP01931485A priority Critical patent/EP1214184A2/en
Priority to AU58254/01A priority patent/AU5825401A/en
Publication of WO2001064420A2 publication Critical patent/WO2001064420A2/en
Publication of WO2001064420A3 publication Critical patent/WO2001064420A3/en

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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
    • 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
    • B29C48/25—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

Landscapes

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

Abstract

An extrusion head for tubular articles made of plastic material comprising a body with at least a first part (2) operatively associated to a flange of an extruder, a central part (3) and a terminal part (4) operatively connected to a spinneret (10) wherein said first part (2) has a plurality of ducts (6) for the passage of the material to be extruded in a fluidic state from the inside of said head (1) to the outside, said conduits (6) communicating with the outside through holes (7) associated to a corresponding number of distribution channels (8) provided in the central part (3) of said body and adjacent to a cylindrical surface of said central part (3), wherein the internal geometry of said distribution channels (8) is such that the fluid pressure distribution along lines (9) separating said channels and said cylindrical surface generates a plurality of fluidic threads, each being of the same flow rate, said fluidic threads creating a tubular homogenous article on the terminal part (4) of said head (1).
PCT/EP2001/002209 2000-03-01 2001-02-26 Extrusion head for tubular articles made of plastic materials WO2001064420A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01931485A EP1214184A2 (en) 2000-03-01 2001-02-26 Extrusion head for tubular articles made of plastic materials
AU58254/01A AU5825401A (en) 2000-03-01 2001-02-26 Extrusion head for tubular articles made of plastic materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000MI000406A IT1316700B1 (en) 2000-03-01 2000-03-01 EXTRUSION HEAD FOR TUBULAR SHAPED PLASTIC ARTICLES
ITMI2000A000406 2000-03-01

Publications (2)

Publication Number Publication Date
WO2001064420A2 WO2001064420A2 (en) 2001-09-07
WO2001064420A3 true WO2001064420A3 (en) 2001-12-27

Family

ID=11444282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/002209 WO2001064420A2 (en) 2000-03-01 2001-02-26 Extrusion head for tubular articles made of plastic materials

Country Status (4)

Country Link
EP (1) EP1214184A2 (en)
AU (1) AU5825401A (en)
IT (1) IT1316700B1 (en)
WO (1) WO2001064420A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045677A (en) * 1979-04-02 1980-11-05 Paclene Co Ltd Ribbed polyethylene film
JPS5882722A (en) * 1981-11-12 1983-05-18 Yoshihiko Tadami Molding method for heat-molten substance
IT1225793B (en) * 1988-10-04 1990-11-29 Tecnomatic Spa Extruder head
US5281126A (en) * 1992-02-25 1994-01-25 Ube Industries, Ltd. Blow molding die

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045677A (en) * 1979-04-02 1980-11-05 Paclene Co Ltd Ribbed polyethylene film
JPS5882722A (en) * 1981-11-12 1983-05-18 Yoshihiko Tadami Molding method for heat-molten substance
IT1225793B (en) * 1988-10-04 1990-11-29 Tecnomatic Spa Extruder head
US5281126A (en) * 1992-02-25 1994-01-25 Ube Industries, Ltd. Blow molding die

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 179 (M - 234) 9 August 1983 (1983-08-09) *

Also Published As

Publication number Publication date
ITMI20000406A0 (en) 2000-03-01
AU5825401A (en) 2001-09-12
ITMI20000406A1 (en) 2001-09-03
EP1214184A2 (en) 2002-06-19
WO2001064420A2 (en) 2001-09-07
IT1316700B1 (en) 2003-04-24

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