FR2361642A1 - METHOD AND DEVICE FOR INDIRECTLY DETERMINING AND POSSIBLY CONTROL OR REGULATING THE VISCOSITY AND HOMOGENEITY OF A MOLTEN MASS OF SYNTHETIC MATERIAL IN SCREW INJECTION PRESSES - Google Patents

METHOD AND DEVICE FOR INDIRECTLY DETERMINING AND POSSIBLY CONTROL OR REGULATING THE VISCOSITY AND HOMOGENEITY OF A MOLTEN MASS OF SYNTHETIC MATERIAL IN SCREW INJECTION PRESSES

Info

Publication number
FR2361642A1
FR2361642A1 FR7724862A FR7724862A FR2361642A1 FR 2361642 A1 FR2361642 A1 FR 2361642A1 FR 7724862 A FR7724862 A FR 7724862A FR 7724862 A FR7724862 A FR 7724862A FR 2361642 A1 FR2361642 A1 FR 2361642A1
Authority
FR
France
Prior art keywords
homogeneity
viscosity
regulating
synthetic material
screw injection
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
FR7724862A
Other languages
French (fr)
Other versions
FR2361642B1 (en
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.)
Demag Kunststofftechnik Zweigniederlassung der Demag AG
Original Assignee
Demag Kunststofftechnik Zweigniederlassung der Demag 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
Application filed by Demag Kunststofftechnik Zweigniederlassung der Demag AG filed Critical Demag Kunststofftechnik Zweigniederlassung der Demag AG
Publication of FR2361642A1 publication Critical patent/FR2361642A1/en
Application granted granted Critical
Publication of FR2361642B1 publication Critical patent/FR2361642B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • 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
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7646—Measuring, controlling or regulating viscosity
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D24/00—Control of viscosity
    • G05D24/02—Control of viscosity characterised by the use of electric means
    • 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
    • B29C45/76—Measuring, controlling or regulating

Abstract

L'invention concerne l'industrie des matières plastiques. Procédé pour déterminer indirectement et éventuellement pour commander ou réguler la viscosité ou l'homogénéité d'une masse fondue de matière synthétique dans une presse à injecter à vis dans lequel en tant que critère pour la viscosité et/ou homogénéité, on mesure le temps de fermeture d'un dispositif antirefouleur et on utilise les variations du temps de fermeture par rapport à une valeur de consigne pour réguler des grandeurs influençant la viscosité ou l'homogénéité de la masse fondue. Application au contrôle précis de viscosité et d'homogénéité dans les presses à injecter.The invention relates to the plastics industry. Method for determining indirectly and possibly for controlling or regulating the viscosity or the homogeneity of a melt of synthetic material in a screw injection press in which as a criterion for the viscosity and / or homogeneity the time of closing of an anti-backflow device and the variations in the closing time with respect to a set point are used to regulate quantities influencing the viscosity or the homogeneity of the melt. Application to precise control of viscosity and homogeneity in injection molding machines.

FR7724862A 1976-08-13 1977-08-12 METHOD AND DEVICE FOR INDIRECTLY DETERMINING AND POSSIBLY CONTROL OR REGULATING THE VISCOSITY AND HOMOGENEITY OF A MOLTEN MASS OF SYNTHETIC MATERIAL IN SCREW INJECTION PRESSES Granted FR2361642A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762636554 DE2636554A1 (en) 1976-08-13 1976-08-13 PROCESS AND EQUIPMENT FOR INDIRECT DETERMINATION AND, IF NECESSARY, FOR CONTROL OR REGULATION OF THE VISCOSITY AND HOMOGENITY OF THE PLASTIC MELT IN SCREW INJECTION MOLDING MACHINES

Publications (2)

Publication Number Publication Date
FR2361642A1 true FR2361642A1 (en) 1978-03-10
FR2361642B1 FR2361642B1 (en) 1981-04-17

Family

ID=5985408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724862A Granted FR2361642A1 (en) 1976-08-13 1977-08-12 METHOD AND DEVICE FOR INDIRECTLY DETERMINING AND POSSIBLY CONTROL OR REGULATING THE VISCOSITY AND HOMOGENEITY OF A MOLTEN MASS OF SYNTHETIC MATERIAL IN SCREW INJECTION PRESSES

Country Status (4)

Country Link
DE (1) DE2636554A1 (en)
FR (1) FR2361642A1 (en)
GB (1) GB1567791A (en)
SE (1) SE423348B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038333A1 (en) * 1990-12-01 1992-06-11 Battenfeld Kunststoffmasch Injection moulding to precise programme - by filling chamber with melt at end of extruder where pressure sensor signals to computer which controls screw movements according to programme
JP4199285B1 (en) * 2007-06-06 2008-12-17 ファナック株式会社 Injection molding machine and check method for check valve closing
GB2481431A (en) * 2010-06-24 2011-12-28 Cherry Pipes Ltd Polymer Extrusion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750134A (en) * 1971-02-11 1973-07-31 Package Machinery Co Plastic injection molding machine monitor
US3784657A (en) * 1970-03-10 1974-01-08 Pennwalt Corp Time monitored process for controlling injection molding cycle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784657A (en) * 1970-03-10 1974-01-08 Pennwalt Corp Time monitored process for controlling injection molding cycle
US3750134A (en) * 1971-02-11 1973-07-31 Package Machinery Co Plastic injection molding machine monitor

Also Published As

Publication number Publication date
GB1567791A (en) 1980-05-21
SE7709173L (en) 1978-02-14
DE2636554A1 (en) 1978-02-16
SE423348B (en) 1982-05-03
FR2361642B1 (en) 1981-04-17

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Legal Events

Date Code Title Description
ST Notification of lapse