ES461049A1 - Injection moulding - Google Patents

Injection moulding

Info

Publication number
ES461049A1
ES461049A1 ES461049A ES461049A ES461049A1 ES 461049 A1 ES461049 A1 ES 461049A1 ES 461049 A ES461049 A ES 461049A ES 461049 A ES461049 A ES 461049A ES 461049 A1 ES461049 A1 ES 461049A1
Authority
ES
Spain
Prior art keywords
screw
gravity
injection molding
component
plasticizing screw
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.)
Expired
Application number
ES461049A
Other languages
Spanish (es)
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of ES461049A1 publication Critical patent/ES461049A1/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
    • 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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • B29C45/1816—Feeding auxiliary material, e.g. colouring material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

Process for the injection molding of thermoplastic compositions of two different components, characterized in that it comprises feeding through one variable speed screw feeder one of the two components directly into the charge manifold of the plasticizing screw of a conventional injection molding press., wherein said component is mechanically mixed with the other component that falls by gravity from the overlying main hopper, after which the obtained mixture, which flows by gravity in the fillets of the plasticizing screw, is plasticized and then injected into the mold, and where the beginning of the rotation of the dosing screw and the plasticizing screw. (Machine-translation by Google Translate, not legally binding)
ES461049A 1976-07-28 1977-07-27 Injection moulding Expired ES461049A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2578376A IT1062557B (en) 1976-07-28 1976-07-28 PROCESS FOR INJECTION MOLDING OF THERMOPLASTIC COMPOSITIONS STARTING FROM TWO DIFFERENT COMPONENTS

Publications (1)

Publication Number Publication Date
ES461049A1 true ES461049A1 (en) 1978-05-16

Family

ID=11217722

Family Applications (1)

Application Number Title Priority Date Filing Date
ES461049A Expired ES461049A1 (en) 1976-07-28 1977-07-27 Injection moulding

Country Status (9)

Country Link
JP (1) JPS5316075A (en)
BE (1) BE857195A (en)
DE (1) DE2733739A1 (en)
ES (1) ES461049A1 (en)
FR (1) FR2359698A1 (en)
GB (1) GB1544758A (en)
GR (1) GR62398B (en)
IT (1) IT1062557B (en)
NL (1) NL7708123A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542841A (en) * 1978-09-25 1980-03-26 Mitsubishi Petrochem Co Ltd Manufacture of polyolefin containing inorganic filler
AT401752B (en) * 1991-09-04 1996-11-25 Engel Gmbh Maschbau SCREW PLASTIFICATION UNIT
FR2776562B1 (en) * 1998-03-30 2000-05-26 Eastman Kodak Co COLORING SUPPLY CONTROL OF A MOLDING MACHINE

Also Published As

Publication number Publication date
GB1544758A (en) 1979-04-25
GR62398B (en) 1979-04-10
DE2733739A1 (en) 1978-02-02
FR2359698A1 (en) 1978-02-24
BE857195A (en) 1978-01-27
JPS5316075A (en) 1978-02-14
IT1062557B (en) 1984-10-20
FR2359698B1 (en) 1980-07-11
NL7708123A (en) 1978-01-31

Similar Documents

Publication Publication Date Title
ES8301439A1 (en) Process for injection-moulding plastics.
GB902513A (en) Improvements in or relating to machines for extruding or injection-moulding thermoplastic and other materials
ES461049A1 (en) Injection moulding
GB1557323A (en) Plasticizing device of an injection moulding machine for plastics
ATE72780T1 (en) DIRECT PROCESSING OF POLYMER WITH POWDER ADDITIVES IN INJECTION MOLDING MACHINES.
GB903697A (en) Moulding press apparatus
ES442552A1 (en) Moulding of filled synthetic plastics moulding compositions
ES423327A1 (en) Thermoplastic moulding compositions based on polybutylene terephthalate
JPH04156320A (en) Injection molding method and injection molder
GB1553621A (en) Process for extruding a synthetic resin body having portions of different thickness
ES456699A1 (en) Moulding thermosetting compositions
ES368321A1 (en) A mould for and process of forming ceramic products
ES413572A1 (en) Rubber aminoplast mouldings compositions
JPS57163444A (en) Fomrming of chewing gum by injection molding
JPS5213537A (en) Preparation of plastic molding composition with improved dimensional r estoration
GB1034948A (en) Improvements in or relating to the manufacture of flashless articles made of a synthetic material
ES463939A1 (en) Thermosetting compositions for injection moulding
JPS57137124A (en) Continuous foaming and molding apparatus
JPS5478760A (en) Injection molding machine
ES303966A1 (en) Improvements in the construction of injector machines for the manufacture of molded objects based on rubber and derivatives and plastic materials (Machine-translation by Google Translate, not legally binding)
JPS56146742A (en) Feeder system for injection molding machine
ES243987A1 (en) Procedure for the injection of molded pieces of artificial material (Machine-translation by Google Translate, not legally binding)
ES8104745A3 (en) Procedure and apparatus for molding a article of plastic material. (Machine-translation by Google Translate, not legally binding)
JPS56106842A (en) Method and device for continuous injection molding for rod body such as crayon
ES444475A1 (en) Plastic material plasticizer screw