WO2002020232A3 - Thermoplastic foam extrusion assembly - Google Patents

Thermoplastic foam extrusion assembly Download PDF

Info

Publication number
WO2002020232A3
WO2002020232A3 PCT/US2000/024361 US0024361W WO0220232A3 WO 2002020232 A3 WO2002020232 A3 WO 2002020232A3 US 0024361 W US0024361 W US 0024361W WO 0220232 A3 WO0220232 A3 WO 0220232A3
Authority
WO
WIPO (PCT)
Prior art keywords
pellets
agent
mixing
flow
barrel
Prior art date
Application number
PCT/US2000/024361
Other languages
French (fr)
Other versions
WO2002020232A2 (en
Inventor
James D Fogarty
Original Assignee
James D Fogarty
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
Priority to US09/188,753 priority Critical patent/US6113375A/en
Application filed by James D Fogarty filed Critical James D Fogarty
Priority to JP2002524886A priority patent/JP2004509782A/en
Priority to EP00959910A priority patent/EP1438166A4/en
Priority to PCT/US2000/024361 priority patent/WO2002020232A2/en
Priority to AU2000271150A priority patent/AU2000271150A1/en
Publication of WO2002020232A2 publication Critical patent/WO2002020232A2/en
Publication of WO2002020232A3 publication Critical patent/WO2002020232A3/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • 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
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/505—Screws
    • B29C48/565—Screws having projections other than the thread, e.g. pins
    • 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
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Landscapes

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

Abstract

A foam extrusion assembly having a melt region which melts material pellets, an agent addition assembly which adds a foaming agent to the pellets, and a mixing assembly which mixes the pellets and the agent with one another. The mixing assembly includes an elongated barrel through which the pellets and the agent are urged from an inlet to an outlet of the barrel. The mixing assembly includes a mixing plug disposed in the barrel passages along a length thereof, the flow passages, which are structured and disposed to receive the pellets and the agent therethrough so as to define a flow path past the mixing plug, each have at least one small transverse dimension so as to restrict amounts of the pellets and the agent which enter the flow passage at one time, and are short in length as to minimize a duration of a flow restriciton at the flow passages.
PCT/US2000/024361 1998-11-09 2000-09-01 Thermoplastic foam extrusion assembly WO2002020232A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US09/188,753 US6113375A (en) 1998-11-09 1998-11-09 Thermoplastic foam extrusion assembly
JP2002524886A JP2004509782A (en) 2000-09-01 2000-09-01 Thermoplastic foam extrusion assembly
EP00959910A EP1438166A4 (en) 2000-09-01 2000-09-01 Thermoplastic foam extrusion assembly
PCT/US2000/024361 WO2002020232A2 (en) 1998-11-09 2000-09-01 Thermoplastic foam extrusion assembly
AU2000271150A AU2000271150A1 (en) 2000-09-01 2000-09-01 Thermoplastic foam extrusion assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/188,753 US6113375A (en) 1998-11-09 1998-11-09 Thermoplastic foam extrusion assembly
PCT/US2000/024361 WO2002020232A2 (en) 1998-11-09 2000-09-01 Thermoplastic foam extrusion assembly

Publications (2)

Publication Number Publication Date
WO2002020232A2 WO2002020232A2 (en) 2002-03-14
WO2002020232A3 true WO2002020232A3 (en) 2004-05-06

Family

ID=26680317

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/024361 WO2002020232A2 (en) 1998-11-09 2000-09-01 Thermoplastic foam extrusion assembly

Country Status (2)

Country Link
US (1) US6113375A (en)
WO (1) WO2002020232A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376741A (en) * 1979-03-21 1983-03-15 Kabel-Und Metallwerke Gutehoffnungshuette Ag Method and apparatus for continuously extruding an expandable thermoplastic resin composition onto an elongated preform
US5630968A (en) * 1995-06-07 1997-05-20 The Japan Steel Works, Ltd. Water-injection foaming devolatilizing method

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827841A (en) * 1969-06-24 1974-08-06 Sekisui Chemical Co Ltd Extrusion apparatus for use in the production of thermoplastic resin foams
US3856442A (en) * 1970-10-19 1974-12-24 Ici Ltd Dispersion of materials in thermoplastics
DE2108936C3 (en) * 1971-02-25 1979-12-13 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Method and device for manufacturing semi-finished plastic products with a foam core and non-foamed shell
US3787542A (en) * 1971-10-14 1974-01-22 Ici Ltd Production of extruded foamed synthetic thermoplastic polymeric materials
JPS5156874A (en) * 1974-11-14 1976-05-18 Toray Industries Konoryoku 2 suteejisukuryuu
CA1059718A (en) * 1975-03-12 1979-08-07 Timothy S. Dougherty Advancing and working thermoplastic materials
JPS5938259B2 (en) * 1975-06-25 1984-09-14 レ−ム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method for producing thermochromic acrylonitrile polymer or copolymer
US4302409A (en) * 1975-09-04 1981-11-24 Union Carbide Corporation Method for the extrusion of thermoplastic material composites
US4099897A (en) * 1975-11-04 1978-07-11 Hitachi Cable, Ltd. Apparatus for producing foamed plastic insulated wires
US4185060A (en) * 1978-03-17 1980-01-22 Ladney M Jr Method of manufacturing structural foam plastic products free from undesirable contaminant constituents
NL8001053A (en) * 1980-02-21 1981-09-16 Stamicarbon METHOD FOR FORMING PLASTICS.
DE3038306C2 (en) * 1980-10-10 1984-03-22 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Extrusion device for the production of foamed, thermoplastic plastic
JPS6052926B2 (en) * 1981-05-18 1985-11-22 積水化成品工業株式会社 Thermoplastic resin foam manufacturing method and device
US4411532A (en) * 1982-01-04 1983-10-25 Usm Corporation Rotary processor
US4746478A (en) * 1985-07-24 1988-05-24 Sekisui Kaseihin Kogyo Kabushiki Kaisha Method and apparatus for production of foamed thermoplastic material
DE3841729C1 (en) * 1988-12-10 1990-03-01 Hermann Berstorff Maschinenbau Gmbh, 30627 Hannover Single or twin screw extruders for degassing thermoplastic melts
JPH03233814A (en) * 1990-02-09 1991-10-17 Sumitomo Electric Ind Ltd Highly foaming insulator extruder
US5288223A (en) * 1991-06-14 1994-02-22 Alfonso Toro Three stage intermixing feed screw for polymers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376741A (en) * 1979-03-21 1983-03-15 Kabel-Und Metallwerke Gutehoffnungshuette Ag Method and apparatus for continuously extruding an expandable thermoplastic resin composition onto an elongated preform
US5630968A (en) * 1995-06-07 1997-05-20 The Japan Steel Works, Ltd. Water-injection foaming devolatilizing method

Also Published As

Publication number Publication date
US6113375A (en) 2000-09-05
WO2002020232A2 (en) 2002-03-14

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