IT8720429A0 - PLASTIFICATION AND INJECTION GROUP OF A MACHINE FOR INJECTION MOLDING OF PLASTIC MATERIALS WITH CHECK VALVE. - Google Patents

PLASTIFICATION AND INJECTION GROUP OF A MACHINE FOR INJECTION MOLDING OF PLASTIC MATERIALS WITH CHECK VALVE.

Info

Publication number
IT8720429A0
IT8720429A0 IT8720429A IT2042987A IT8720429A0 IT 8720429 A0 IT8720429 A0 IT 8720429A0 IT 8720429 A IT8720429 A IT 8720429A IT 2042987 A IT2042987 A IT 2042987A IT 8720429 A0 IT8720429 A0 IT 8720429A0
Authority
IT
Italy
Prior art keywords
plastification
machine
check valve
injection
plastic materials
Prior art date
Application number
IT8720429A
Other languages
Italian (it)
Other versions
IT1204566B (en
Inventor
Rudolf Krebser
Jakob Kamm
Original Assignee
Netstal Ag Maschf Giesserei
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 Netstal Ag Maschf Giesserei filed Critical Netstal Ag Maschf Giesserei
Publication of IT8720429A0 publication Critical patent/IT8720429A0/en
Application granted granted Critical
Publication of IT1204566B publication Critical patent/IT1204566B/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/52—Non-return devices
    • 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
    • B29C48/255—Flow control means, e.g. valves
    • B29C48/2556—Flow control means, e.g. valves provided in or in the proximity of dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
IT20429/87A 1986-05-13 1987-05-08 PLASTICIZATION AND INJECTION GROUP OF A PLASTIC INJECTION MOLDING MACHINE WITH CHECK VALVE IT1204566B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1939/86A CH670065A5 (en) 1986-05-13 1986-05-13

Publications (2)

Publication Number Publication Date
IT8720429A0 true IT8720429A0 (en) 1987-05-08
IT1204566B IT1204566B (en) 1989-03-10

Family

ID=4222129

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20429/87A IT1204566B (en) 1986-05-13 1987-05-08 PLASTICIZATION AND INJECTION GROUP OF A PLASTIC INJECTION MOLDING MACHINE WITH CHECK VALVE

Country Status (6)

Country Link
JP (1) JPS62271720A (en)
CN (1) CN87103685A (en)
CH (1) CH670065A5 (en)
DE (1) DE3711775A1 (en)
FR (1) FR2598651A1 (en)
IT (1) IT1204566B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3076099B2 (en) * 1991-09-03 2000-08-14 住友重機械プラスチックマシナリー株式会社 Screw head structure
DE19517807B4 (en) * 1995-05-15 2004-06-09 Potthoff, Rüdiger Three-part non-return valve for thermoplastic materials
DE19849472C2 (en) * 1998-10-21 2002-11-28 Demag Ergotech Gmbh Non-return valve for the plasticizing and injection screw in injection molding machines
CN100371154C (en) * 2004-11-04 2008-02-27 湖北工业大学 Internal circulation controllable shearing and banburying apparatus
AT16962U1 (en) * 2019-04-25 2021-01-15 Engel Austria Gmbh
JP2023115453A (en) * 2022-02-08 2023-08-21 株式会社日本製鋼所 Backflow prevention device, screw, and injection molding machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1921058A1 (en) * 1969-04-25 1970-11-05 R H Windsor Ltd Frankfurt M Gm Anti feed-back ring for injection moulder - extruder screw
DE2946683A1 (en) * 1979-11-20 1981-05-27 Mannesmann Demag Kunstofftechnik Zweigniederlassung der Mannesmann Demag AG, 8500 Nürnberg Extruder head backflow valve - has ring sliding on shaft with tapered gap at front position for polymer lubrication
DE3142756C2 (en) * 1981-10-28 1984-12-13 Bucher-Guyer AG Maschinenfabrik, Niederweningen, Zürich Non-return valve for a screw injection molding machine

Also Published As

Publication number Publication date
IT1204566B (en) 1989-03-10
CN87103685A (en) 1987-12-02
DE3711775A1 (en) 1987-11-19
JPS62271720A (en) 1987-11-26
JPH0457176B2 (en) 1992-09-10
FR2598651A1 (en) 1987-11-20
CH670065A5 (en) 1989-05-12

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