GB1346095A - Method and apparatus for the open and/or closed loop control of viscosity dependent processes - Google Patents

Method and apparatus for the open and/or closed loop control of viscosity dependent processes

Info

Publication number
GB1346095A
GB1346095A GB2398071*A GB2398071A GB1346095A GB 1346095 A GB1346095 A GB 1346095A GB 2398071 A GB2398071 A GB 2398071A GB 1346095 A GB1346095 A GB 1346095A
Authority
GB
United Kingdom
Prior art keywords
viscosity
ultrasonic waves
open
viscosity value
extruder
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
GB2398071*A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1346095A publication Critical patent/GB1346095A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92085—Velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/9218—Weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/922—Viscosity; Melt flow index [MFI]; Molecular weight
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92219—Degree of crosslinking, solidification, crystallinity or homogeneity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92457—Drive section, e.g. gearbox, motor or drive fluids
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/011—Velocity or travel time
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/015—Attenuation, scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0251—Solidification, icing, curing composites, polymerisation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0253—Condensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0255—(Bio)chemical reactions, e.g. on biosensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02881—Temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0421—Longitudinal waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0422—Shear waves, transverse waves, horizontally polarised waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/101—Number of transducers one transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1346095 Injection moulding; extrusion moulding R POHLMAN and G MENGES 19 April 1971 [14 March 1970] 23980/71 Heading B5A [Also in Divisions G3 and H4] A viscosity dependent process, e.g. one using molten plastics for the production of injection moulded parts, blown hollow parts, fibres, tubes or foils, is regulated in dependence on values of ultrasonic wave attenuation and/or wave velocity obtained by transmitting ultrasonic waves through a flowing viscous mass. In the Fig. 1 embodiment measurement head 8 provides ultrasonic waves passing transversely to the flow path of a plastics mass being conveyed to extruder nozzle 7 from hopper 4 by a worm conveyer 5 in a heated channel 6. Ultrasonic measurements are made in a throughtransmission or pulse-echo mode by means of pulse transmitter/receiver 9. Velocity and attenuation values derived by unit 10 are fed to data processor 11 which computes a viscosity value, compares this with a reference viscosity value, and supplies any difference signal to members 12 and 13 which regulate, e.g. the channel 6 heaters, or the supply of material to the extruder.
GB2398071*A 1970-03-14 1971-04-19 Method and apparatus for the open and/or closed loop control of viscosity dependent processes Expired GB1346095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702012207 DE2012207B2 (en) 1970-03-14 1970-03-14 METHOD AND DEVICE FOR CONTROLLING AND / OR REGULATING VISCOSITY-DEPENDENT PROCEDURES

Publications (1)

Publication Number Publication Date
GB1346095A true GB1346095A (en) 1974-02-06

Family

ID=5765109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2398071*A Expired GB1346095A (en) 1970-03-14 1971-04-19 Method and apparatus for the open and/or closed loop control of viscosity dependent processes

Country Status (4)

Country Link
JP (1) JPS5131356B1 (en)
DE (1) DE2012207B2 (en)
FR (1) FR2091976B1 (en)
GB (1) GB1346095A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000076737A1 (en) * 1999-06-15 2000-12-21 The Dow Chemical Company Process and apparatus for preparing a composition using a continuous reactor and mixer in series
US6324901B1 (en) * 1993-05-19 2001-12-04 FLüH GERD Process and device for recognizing foreign bodies in viscous or fluid, lump-containing foodstuffs
WO2001096854A2 (en) * 2000-06-15 2001-12-20 Dow Global Technologies Inc Process and apparatus for preparing polymers, utilizing a side stream ultrasonic device for monitoring and controlling the properties of the polymer
WO2002052243A1 (en) * 2000-12-22 2002-07-04 Borealis Technology Oy Viscosity measurement
EP2179835A1 (en) * 2008-10-22 2010-04-28 Sikora Ag Method and device for measuring the temperature of a plasticized plastic at the exit of an extruder
WO2011161467A1 (en) 2010-06-24 2011-12-29 Cherry Pipes Limited Method and ultrasonic apparatus for polymer extrusion

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS212352B1 (en) * 1978-08-01 1982-03-26 Jiri Docekal Method of continuous measuring the changes of rheological properties of polymeres in the course of the polymerization process
DE3518155A1 (en) * 1985-05-21 1986-11-27 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf METHOD FOR PRODUCING A PLASTIC FILM WITH A LOW THICKNESS TOLERANCE
FR2588664B1 (en) * 1985-10-15 1988-07-15 Metravib Sa APPARATUS FOR MEASURING PHYSICAL PROPERTIES OF A MEDIUM, ESPECIALLY RHEOLOGICAL PROPERTIES.
DE10202248A1 (en) * 2002-01-21 2003-07-31 Buehler Ag System for influencing the rheological properties of a conveyable material
GB201112530D0 (en) * 2011-07-21 2011-08-31 Res Ltd Injection moulding nozzle
WO2013135614A1 (en) * 2012-03-13 2013-09-19 Basf Se Method for controlling the viscosity of a mixture containing at least two components having different viscosities
US9170184B2 (en) 2012-03-13 2015-10-27 Basf Se Method of regulating the viscosity of a mixture comprising at least two components having different viscosities
JP6493242B2 (en) * 2016-02-15 2019-04-03 オムロン株式会社 Molding machine, control device, and molding device
CN106442219B (en) * 2016-09-20 2018-10-23 北京工商大学 A kind of screw extruder flow field characteristic test equipment

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324901B1 (en) * 1993-05-19 2001-12-04 FLüH GERD Process and device for recognizing foreign bodies in viscous or fluid, lump-containing foodstuffs
US6436326B1 (en) 1999-06-15 2002-08-20 Dow Global Technologies Inc. Forming slurry of reactive components and continuously feeding into continuous reactor
WO2000076656A1 (en) * 1999-06-15 2000-12-21 The Dow Chemical Company Process and apparatus for preparing a composition of matter utilizing an ultrasonic device
WO2000076737A1 (en) * 1999-06-15 2000-12-21 The Dow Chemical Company Process and apparatus for preparing a composition using a continuous reactor and mixer in series
WO2001096854A2 (en) * 2000-06-15 2001-12-20 Dow Global Technologies Inc Process and apparatus for preparing polymers, utilizing a side stream ultrasonic device for monitoring and controlling the properties of the polymer
WO2001096854A3 (en) * 2000-06-15 2002-08-08 Dow Gloval Technologies Inc Process and apparatus for preparing polymers, utilizing a side stream ultrasonic device for monitoring and controlling the properties of the polymer
WO2002052243A1 (en) * 2000-12-22 2002-07-04 Borealis Technology Oy Viscosity measurement
US6945094B2 (en) 2000-12-22 2005-09-20 Borealis Technology Oy Viscosity measurement
EP2179835A1 (en) * 2008-10-22 2010-04-28 Sikora Ag Method and device for measuring the temperature of a plasticized plastic at the exit of an extruder
RU2465136C2 (en) * 2008-10-22 2012-10-27 Сикора Аг Method and device for temperature measurement of plasticised plastic material at extrusion device outlet, and method and device for plastic material extrusion
US8298461B2 (en) 2008-10-22 2012-10-30 Sikora Ag Method for the measurement of the temperature of a plastified plastic material at the exit of an extruder
CN101722650B (en) * 2008-10-22 2014-01-08 斯考拉股份公司 Method and apparatus for the measurement of the temperature of a plastified plastic material at the exit of an extruder
WO2011161467A1 (en) 2010-06-24 2011-12-29 Cherry Pipes Limited Method and ultrasonic apparatus for polymer extrusion

Also Published As

Publication number Publication date
FR2091976A1 (en) 1972-01-21
FR2091976B1 (en) 1974-06-28
DE2012207B2 (en) 1972-12-28
JPS5131356B1 (en) 1976-09-06
DE2012207A1 (en) 1971-09-23

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