GB2184975A - Method and apparatus for melting and conveying plasticated material - Google Patents

Method and apparatus for melting and conveying plasticated material

Info

Publication number
GB2184975A
GB2184975A GB08630021A GB8630021A GB2184975A GB 2184975 A GB2184975 A GB 2184975A GB 08630021 A GB08630021 A GB 08630021A GB 8630021 A GB8630021 A GB 8630021A GB 2184975 A GB2184975 A GB 2184975A
Authority
GB
United Kingdom
Prior art keywords
section
shaft
channel means
conveying
metering
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.)
Granted
Application number
GB08630021A
Other versions
GB8630021D0 (en
GB2184975B (en
Inventor
Robert F Dray
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
Publication of GB8630021D0 publication Critical patent/GB8630021D0/en
Publication of GB2184975A publication Critical patent/GB2184975A/en
Application granted granted Critical
Publication of GB2184975B publication Critical patent/GB2184975B/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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/428—Parts or accessories, e.g. casings, feeding or discharging means
    • B29B7/429—Screws
    • 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
    • B29C48/64—Screws with two or more threads
    • B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A method and apparatus for melting and conveying plasticated materials by independently developing an initial melt film which is necessary for proper conveying of the material. The apparatus includes a barrel (11) having a cylindrical bore (13) therethrough, a shaft (39) rotatable in said bore which has a substantially circular cross-section, the shaft (39) and bore (13) defining a feed section (106), a metering section (112) and a transition section (109) between the feed and metering sections. The shaft is provided with a helical first channel means (56) intergral with the shaft (39) for conveying said plasticated material in a downstream direction (28) through the feed section (106), the transition section (109), and the metering section (112) when the shaft (39) is rotated. A helical second channel means (68) for producing an initial melt film is provided integral with the shaft (39) for subjecting the material in the second channel means (68) to high initial shear rates to rapidly form a melted film of plasticated material in proximity to a point of commencement (103) of the feed section (106). The second channel means (68) terminates at a point of beginning (108) of the transition section (109) whereupon the first channel means (56) has a step (126) through the transition section (109) which step (126) disappears before a point of beginning (111) of the metering section.
GB8630021A 1985-05-02 1986-04-24 Method and apparatus for melting and conveying plasticated material Expired GB2184975B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72968485A 1985-05-02 1985-05-02
PCT/US1986/000861 WO1986006325A1 (en) 1985-05-02 1986-04-24 Method and apparatus for melting and conveying plasticated material

Publications (3)

Publication Number Publication Date
GB8630021D0 GB8630021D0 (en) 1987-01-28
GB2184975A true GB2184975A (en) 1987-07-08
GB2184975B GB2184975B (en) 1989-07-12

Family

ID=24932147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8630021A Expired GB2184975B (en) 1985-05-02 1986-04-24 Method and apparatus for melting and conveying plasticated material

Country Status (6)

Country Link
EP (1) EP0221141A1 (en)
JP (1) JPS62502677A (en)
CA (1) CA1284413C (en)
DE (1) DE3690220T1 (en)
GB (1) GB2184975B (en)
WO (1) WO1986006325A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964730A (en) * 1986-08-19 1990-10-23 Alzner Bernard G Plasticating extruder screw
JPS63291632A (en) * 1987-05-25 1988-11-29 Mitsubishi Heavy Ind Ltd Plasticized screw
JP2966735B2 (en) * 1994-07-29 1999-10-25 積水化成品工業株式会社 Thermoplastic resin extruder
JP4226745B2 (en) 2000-01-18 2009-02-18 富士重工業株式会社 Coating film peeling equipment for painted resin products
DE102012008023B4 (en) * 2012-04-21 2016-06-02 Kraussmaffei Technologies Gmbh screw extruder
CA3050964A1 (en) 2017-06-01 2018-12-06 Wenger Manufacturing Inc. High specific mechanical energy extrusion screw assembly
DE102017124091B4 (en) * 2017-10-17 2019-08-01 Kraussmaffei Technologies Gmbh Shear and single screw plasticizing unit

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28901A (en) * 1860-06-26 Improvement in making eaves-troughs
US3375549A (en) * 1961-04-05 1968-04-02 Uniroyal Inc Method and apparatus for refining and separating plastic materials
US3650652A (en) * 1970-05-05 1972-03-21 Feed Screws Inc Apparatus for extruding plastic material
US3698541A (en) * 1971-08-11 1972-10-17 Midland Ross Corp Extruder, or extruder-like melting apparatus
US3866890A (en) * 1973-11-13 1975-02-18 Scient Process & Research Inc Apparatus for simultaneous plasticating and mixing
US3989941A (en) * 1972-09-28 1976-11-02 Midland-Ross Corporation Extruder and screw therefor for effecting transverse currents in work material handled thereby
US3998438A (en) * 1973-09-17 1976-12-21 Beloit Corporation Extruder plasticizing and mixing screw
US4000884A (en) * 1975-07-25 1977-01-04 Chung Chan I Extruder screw
US4136967A (en) * 1974-09-04 1979-01-30 Bayer Aktiengesellschaft Screw machine for the continuous degradation of plastics
US4240755A (en) * 1978-07-13 1980-12-23 New Castle Industries, Inc. Injection molding screw for processing heat sensitive polymeric materials
US4277182A (en) * 1978-05-31 1981-07-07 Hpm Corporation Extruder with short cycle multichannel wave screw
US4341474A (en) * 1980-08-27 1982-07-27 Wheeler Jr Norton C Extruder screw
US4510110A (en) * 1980-09-30 1985-04-09 Costruzioni Meccaniche G. Mazzoni S.P.A. High efficiency, fast extruders for extruding and refining soap and detergents

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909009B2 (en) * 1969-02-22 1973-04-26 Fried Krupp GmbH, 4300 Essen MULTIPLE EXTRUDER SCREW
FR2093483A5 (en) * 1970-05-08 1972-01-28 Plast Elastverarbeitungsmasch
USRE28901E (en) * 1972-08-10 1976-07-13 The B. F. Goodrich Company Apparatus for refining polymeric material

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US28901A (en) * 1860-06-26 Improvement in making eaves-troughs
US3375549A (en) * 1961-04-05 1968-04-02 Uniroyal Inc Method and apparatus for refining and separating plastic materials
US3650652A (en) * 1970-05-05 1972-03-21 Feed Screws Inc Apparatus for extruding plastic material
US3698541A (en) * 1971-08-11 1972-10-17 Midland Ross Corp Extruder, or extruder-like melting apparatus
US3989941A (en) * 1972-09-28 1976-11-02 Midland-Ross Corporation Extruder and screw therefor for effecting transverse currents in work material handled thereby
US3998438A (en) * 1973-09-17 1976-12-21 Beloit Corporation Extruder plasticizing and mixing screw
US3866890A (en) * 1973-11-13 1975-02-18 Scient Process & Research Inc Apparatus for simultaneous plasticating and mixing
US4136967A (en) * 1974-09-04 1979-01-30 Bayer Aktiengesellschaft Screw machine for the continuous degradation of plastics
US4000884A (en) * 1975-07-25 1977-01-04 Chung Chan I Extruder screw
US4277182A (en) * 1978-05-31 1981-07-07 Hpm Corporation Extruder with short cycle multichannel wave screw
US4240755A (en) * 1978-07-13 1980-12-23 New Castle Industries, Inc. Injection molding screw for processing heat sensitive polymeric materials
US4341474A (en) * 1980-08-27 1982-07-27 Wheeler Jr Norton C Extruder screw
US4510110A (en) * 1980-09-30 1985-04-09 Costruzioni Meccaniche G. Mazzoni S.P.A. High efficiency, fast extruders for extruding and refining soap and detergents

Also Published As

Publication number Publication date
GB8630021D0 (en) 1987-01-28
DE3690220T1 (en) 1987-06-04
JPS62502677A (en) 1987-10-15
GB2184975B (en) 1989-07-12
CA1284413C (en) 1991-05-28
WO1986006325A1 (en) 1986-11-06
EP0221141A1 (en) 1987-05-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950424