FR2089558A5 - Injection moulding of thermoplastic resins - Google Patents

Injection moulding of thermoplastic resins

Info

Publication number
FR2089558A5
FR2089558A5 FR7112930A FR7112930A FR2089558A5 FR 2089558 A5 FR2089558 A5 FR 2089558A5 FR 7112930 A FR7112930 A FR 7112930A FR 7112930 A FR7112930 A FR 7112930A FR 2089558 A5 FR2089558 A5 FR 2089558A5
Authority
FR
France
Prior art keywords
mould
injection moulding
thermoplastic resins
resin
mould group
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
FR7112930A
Other languages
French (fr)
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.)
Mannesmann Demag Krauss Maffei GmbH
Original Assignee
Krauss Maffei AG
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
Priority claimed from DE19702019888 external-priority patent/DE2019888A1/en
Priority claimed from DE19702031657 external-priority patent/DE2031657A1/en
Application filed by Krauss Maffei AG filed Critical Krauss Maffei AG
Application granted granted Critical
Publication of FR2089558A5 publication Critical patent/FR2089558A5/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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • 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
    • B29C45/03—Injection moulding apparatus
    • B29C45/12—Injection moulding apparatus using two or more fixed moulds, e.g. in tandem
    • B29C45/125—Injection moulding apparatus using two or more fixed moulds, e.g. in tandem using a material distributing system
    • 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
    • B29C45/57—Exerting after-pressure on the moulding material
    • B29C45/572—Exerting after-pressure on the moulding material using movable mould wall or runner parts
    • 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
    • B29C45/57—Exerting after-pressure on the moulding material
    • B29C45/572—Exerting after-pressure on the moulding material using movable mould wall or runner parts
    • B29C2045/577—Exerting after-pressure on the moulding material using movable mould wall or runner parts pushing the material in the runner channel until a pin or slider reaches the mould cavity wall

Landscapes

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

Abstract

Process is carried out by commencing the injection of the resin into the next operating mould or mould group in the period when a pressure drop appears for the operating mould or mould group. The resin is injected into a mould or mould group while the resin is injected into the previous mould or mould group is cooling. The working cycle for injection moulding is decreased, and the machine output is increased.
FR7112930A 1970-04-24 1971-04-13 Injection moulding of thermoplastic resins Expired FR2089558A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702019888 DE2019888A1 (en) 1970-04-24 1970-04-24 Injection moulding of thermoplastic resins
DE19702031657 DE2031657A1 (en) 1970-06-26 1970-06-26 Method and device for operating an injection molding machine

Publications (1)

Publication Number Publication Date
FR2089558A5 true FR2089558A5 (en) 1972-01-07

Family

ID=25759012

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7112930A Expired FR2089558A5 (en) 1970-04-24 1971-04-13 Injection moulding of thermoplastic resins

Country Status (2)

Country Link
FR (1) FR2089558A5 (en)
SE (1) SE390138B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629388A1 (en) * 1988-03-31 1989-10-06 Inocar Apparatus for injecting composite materials into shaping moulds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629388A1 (en) * 1988-03-31 1989-10-06 Inocar Apparatus for injecting composite materials into shaping moulds

Also Published As

Publication number Publication date
SE390138B (en) 1976-12-06

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Legal Events

Date Code Title Description
ST Notification of lapse