JPS57207044A - Kneading element for thermoplastic resin extruder - Google Patents

Kneading element for thermoplastic resin extruder

Info

Publication number
JPS57207044A
JPS57207044A JP56091508A JP9150881A JPS57207044A JP S57207044 A JPS57207044 A JP S57207044A JP 56091508 A JP56091508 A JP 56091508A JP 9150881 A JP9150881 A JP 9150881A JP S57207044 A JPS57207044 A JP S57207044A
Authority
JP
Japan
Prior art keywords
section
flight
screw
resin
space
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
JP56091508A
Other languages
Japanese (ja)
Other versions
JPS608934B2 (en
Inventor
Toyoji Tamura
Kazuyuki Nakamura
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.)
NIPPON SEIKOSHO KK
Japan Steel Works Ltd
Original Assignee
NIPPON SEIKOSHO KK
Japan Steel Works Ltd
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 NIPPON SEIKOSHO KK, Japan Steel Works Ltd filed Critical NIPPON SEIKOSHO KK
Priority to JP56091508A priority Critical patent/JPS608934B2/en
Publication of JPS57207044A publication Critical patent/JPS57207044A/en
Publication of JPS608934B2 publication Critical patent/JPS608934B2/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/686—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having grooves or cavities
    • 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
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • 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)

Abstract

PURPOSE:To provide the titled kneading elements that can provide an extruder capable of producing a parts of superior quality with a large extrusion capacity per unit time, by combining a screw with a specified shape and a cylinder with a specified shape. CONSTITUTION:A resin raw material is moved forward by the rotation of a screw 3, and part of the material is melted by the heat conducted through the wall. As the diameter of a section 1a is made gradually larger toward its forward end, the material is forced by a flight 7 into a section 1b. In addition, the diameter of a section 1c is tapered, the material undergoes the influence of a flight 8 greatly, and the delivering action is gradually increased. At the section 1c, an unmelted portion of the material is stuck in a groove 16 in an inner surface 15, is then scraped by edges 25 of notches 9, and is divided finely to be liable to be deformed. Then the material is moved into a section 2, and when it is passed through the space between a cylinder inner surface 18 and the flight screw top edge 27, considerable shearing action is exerted on the resin material. The rotation of the screw at the space section 28 facilitates to draw the resin material into the space between the inner surface 18 and the flight 17, so that the resin is sheared effectively and is facilitated to be plasiticized in the early stage.
JP56091508A 1981-06-16 1981-06-16 Kneading elements for thermoplastic extruder Expired JPS608934B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091508A JPS608934B2 (en) 1981-06-16 1981-06-16 Kneading elements for thermoplastic extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091508A JPS608934B2 (en) 1981-06-16 1981-06-16 Kneading elements for thermoplastic extruder

Publications (2)

Publication Number Publication Date
JPS57207044A true JPS57207044A (en) 1982-12-18
JPS608934B2 JPS608934B2 (en) 1985-03-06

Family

ID=14028345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091508A Expired JPS608934B2 (en) 1981-06-16 1981-06-16 Kneading elements for thermoplastic extruder

Country Status (1)

Country Link
JP (1) JPS608934B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221504A (en) * 1990-12-14 1993-06-22 Hermann Berstorff Maschinenbau Gmbh Process and apparatus for optimal operation of a high-speed extruder
EP2535165A1 (en) * 2011-06-16 2012-12-19 Hans Weber Maschinenfabrik GmbH Twin screw extruder with wavy screw thread
US8998481B2 (en) 2012-08-16 2015-04-07 Hans Weber Maschinenfabrik Gmbh Double screw extruder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221504A (en) * 1990-12-14 1993-06-22 Hermann Berstorff Maschinenbau Gmbh Process and apparatus for optimal operation of a high-speed extruder
EP2535165A1 (en) * 2011-06-16 2012-12-19 Hans Weber Maschinenfabrik GmbH Twin screw extruder with wavy screw thread
US8998481B2 (en) 2012-08-16 2015-04-07 Hans Weber Maschinenfabrik Gmbh Double screw extruder

Also Published As

Publication number Publication date
JPS608934B2 (en) 1985-03-06

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