IT8347637A0 - Barriera contro flusso inverso, in particolare per macchine di stampaggio ad iniezione - Google Patents

Barriera contro flusso inverso, in particolare per macchine di stampaggio ad iniezione

Info

Publication number
IT8347637A0
IT8347637A0 IT8347637A IT4763783A IT8347637A0 IT 8347637 A0 IT8347637 A0 IT 8347637A0 IT 8347637 A IT8347637 A IT 8347637A IT 4763783 A IT4763783 A IT 4763783A IT 8347637 A0 IT8347637 A0 IT 8347637A0
Authority
IT
Italy
Prior art keywords
injection molding
reverse flow
molding machines
barrier against
against reverse
Prior art date
Application number
IT8347637A
Other languages
English (en)
Other versions
IT1168758B (it
Inventor
Eichlseder Martin
Burkle Erwin
Original Assignee
Munchen Germania Rep Fed A
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 Munchen Germania Rep Fed A filed Critical Munchen Germania Rep Fed A
Publication of IT8347637A0 publication Critical patent/IT8347637A0/it
Application granted granted Critical
Publication of IT1168758B publication Critical patent/IT1168758B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
IT47637/83A 1982-02-04 1983-01-31 Barriera contro flusso inverso,in particolare per macchine di stampaggio ad iniezione IT1168758B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823203724 DE3203724A1 (de) 1982-02-04 1982-02-04 Rueckstroemsperre

Publications (2)

Publication Number Publication Date
IT8347637A0 true IT8347637A0 (it) 1983-01-31
IT1168758B IT1168758B (it) 1987-05-20

Family

ID=6154743

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47637/83A IT1168758B (it) 1982-02-04 1983-01-31 Barriera contro flusso inverso,in particolare per macchine di stampaggio ad iniezione

Country Status (5)

Country Link
US (1) US4512733A (it)
JP (1) JPS58138627A (it)
DE (1) DE3203724A1 (it)
FR (1) FR2520660B1 (it)
IT (1) IT1168758B (it)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384577B (de) * 1985-07-19 1987-12-10 Engel Kg L Rueckstroemsperre fuer die plastifizierschnecke einer spritzgiessmaschine
US5044926A (en) * 1990-06-25 1991-09-03 Cincinnati Milacron Inc. Anti-backflow valve for injection molding machines
AU6714390A (en) * 1990-10-06 1992-04-28 Seiko Corporation Process and apparatus for injection molding with melt filtration
US5112213A (en) * 1991-02-26 1992-05-12 Van Dorn Company Driven ring-type non-return valve for injection molding
US5470514A (en) * 1991-05-13 1995-11-28 Dray; Robert F. Injection molding method for a shot of determined mass
US5151282A (en) * 1991-05-13 1992-09-29 Dray Robert F Positive-type non-return valve
US5258158A (en) * 1991-05-13 1993-11-02 Dray Robert F Positive-type non-return valve and method of using valve
US5164207A (en) * 1991-11-08 1992-11-17 Spirex Corporation Plastic extruder with automatic shut-off valve
AT396902B (de) * 1992-03-12 1993-12-27 Engel Gmbh Maschbau Rückstromsperre für eine einspritzeinheit einer spritzgiessmaschine
JP2571523B2 (ja) * 1993-09-28 1997-01-16 日精樹脂工業株式会社 射出スクリュ
US5441400A (en) * 1994-04-07 1995-08-15 Zeiger; Donald J. Spring biased check valve for an injection molding machine
US5439633A (en) * 1994-07-27 1995-08-08 Spirex Corporation Plastic extruder having a mixing valve with automatic shut-off
US6168411B1 (en) 1999-03-18 2001-01-02 Dynisco Extrusion, Inc. Polymer filtration method and apparatus
US6322347B1 (en) 1999-04-02 2001-11-27 Trexel, Inc. Methods for manufacturing foam material including systems with pressure restriction element
US6499987B1 (en) 2000-06-14 2002-12-31 Md Plastics Incorporated Positive control non-return valve for an injection molding machine
US6585001B2 (en) * 2000-11-30 2003-07-01 Spirex Corporation Flow through ring valve for plastic extruding systems
US7318713B2 (en) * 2002-07-18 2008-01-15 Trexel, Inc. Polymer processing systems including screws
US7104775B2 (en) * 2003-03-27 2006-09-12 Lg Cable Ltd. Injection unit having rotatable device for preventing reverse flow
US6921190B2 (en) * 2003-04-22 2005-07-26 Mgs Mfg. Group Inc. Injector with improved small shot metering
US7353858B2 (en) * 2006-05-17 2008-04-08 Husky Injection Molding Systems Ltd. Cap for servicing molding-system valve
US7425126B2 (en) * 2006-05-17 2008-09-16 Husky Injection Molding Systems Ltd. Molding-system valve having knockdown retainer
US7527493B1 (en) * 2007-11-01 2009-05-05 Md Plastics Incorporated Precise control non-return valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US30335A (en) * 1860-10-09 Improvement in breech-loading ordnance
US3438393A (en) * 1966-07-20 1969-04-15 Improved Machinery Inc Valve
GB1335824A (en) * 1970-11-26 1973-10-31 Strode Components Ltd Injection moulding feed screw
DE2364501B2 (de) * 1973-12-24 1978-09-28 Bayer Ag, 5090 Leverkusen Einspritzdüse fur Schaummaschinen
DE2726427A1 (de) * 1977-06-11 1979-01-04 Theysohn Friedrich Fa Spritzgiessmaschine zur herstellung von formkoerpern aus kunststoff
US4306848A (en) * 1979-05-23 1981-12-22 Hpm Corporation Injection molding apparatus having low shear screw
EP0027616B1 (de) * 1979-10-19 1983-06-22 Mannesmann Demag Kunststofftechnik Zweigniederlassung Der Mannesmann Demag Aktiengesellschaft Rückströmsperre am Schneckenkopf von Schneckenspritzgiessmaschinen
US4358033A (en) * 1980-05-05 1982-11-09 Export Tool Company Injection molding assembly
US4377180A (en) * 1980-11-10 1983-03-22 Component Manufacturing & Design, Inc. Non-return valve for plastic injection molding

Also Published As

Publication number Publication date
US4512733A (en) 1985-04-23
JPS58138627A (ja) 1983-08-17
DE3203724A1 (de) 1983-08-11
FR2520660B1 (fr) 1986-11-14
FR2520660A1 (fr) 1983-08-05
IT1168758B (it) 1987-05-20

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