IT942072B - Procedimento e dispositivo per la regolazione in continuo della por tata di emissione dalle teste di estrusione di un estrusore a teste multiple per materiali plastici - Google Patents

Procedimento e dispositivo per la regolazione in continuo della por tata di emissione dalle teste di estrusione di un estrusore a teste multiple per materiali plastici

Info

Publication number
IT942072B
IT942072B IT25180/71A IT2518071A IT942072B IT 942072 B IT942072 B IT 942072B IT 25180/71 A IT25180/71 A IT 25180/71A IT 2518071 A IT2518071 A IT 2518071A IT 942072 B IT942072 B IT 942072B
Authority
IT
Italy
Prior art keywords
procedure
plastic materials
emission rate
continuous adjustment
multiple head
Prior art date
Application number
IT25180/71A
Other languages
English (en)
Italian (it)
Original Assignee
Saint Gobain
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 Saint Gobain filed Critical Saint Gobain
Application granted granted Critical
Publication of IT942072B publication Critical patent/IT942072B/it

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • G05D23/27535—Details of the sensing element
    • 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
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the 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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/135—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture
    • G05D11/136—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture by sensing the viscosity
    • 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
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92504—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
    • B29C2948/92904—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
    • 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
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
IT25180/71A 1970-05-29 1971-05-28 Procedimento e dispositivo per la regolazione in continuo della por tata di emissione dalle teste di estrusione di un estrusore a teste multiple per materiali plastici IT942072B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7019808A FR2087753A5 (enExample) 1970-05-29 1970-05-29

Publications (1)

Publication Number Publication Date
IT942072B true IT942072B (it) 1973-03-20

Family

ID=9056398

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25180/71A IT942072B (it) 1970-05-29 1971-05-28 Procedimento e dispositivo per la regolazione in continuo della por tata di emissione dalle teste di estrusione di un estrusore a teste multiple per materiali plastici

Country Status (15)

Country Link
US (1) US3819777A (enExample)
AT (1) AT321561B (enExample)
BE (1) BE767888A (enExample)
BR (1) BR7103268D0 (enExample)
CH (1) CH534047A (enExample)
DE (1) DE2126200A1 (enExample)
ES (1) ES391685A1 (enExample)
FR (1) FR2087753A5 (enExample)
GB (1) GB1320848A (enExample)
IE (1) IE35929B1 (enExample)
IT (1) IT942072B (enExample)
LU (1) LU63242A1 (enExample)
NL (1) NL7107270A (enExample)
SE (1) SE374053B (enExample)
ZA (1) ZA713464B (enExample)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969055A (en) * 1973-12-17 1976-07-13 Globe-Union Inc. Injection mold control system
US4034952A (en) * 1975-08-27 1977-07-12 Kenics Corporation Hot plastic injection bushing
US4032279A (en) * 1975-09-08 1977-06-28 The B. F. Goodrich Company Extrusion adapter
DE2940890A1 (de) * 1979-10-05 1981-04-30 Bell Maschinenfabrik Ag, Kriens Verfahren zum fuehren einer plastifizierten kunststoffmasse insbesondere bei parallel geschalteten wegen
DE3001159C2 (de) * 1980-01-15 1987-03-05 kabelmetal electro GmbH, 3000 Hannover Verfahren zum Herstellen schrumpffähiger Formteile
EP0298908B1 (de) * 1987-07-08 1992-04-29 Soplar Sa Koextrusionsvorrichtung
US4906170A (en) * 1988-02-16 1990-03-06 Cello-O-Core Apparatus for printing on plastic tubing
US4842503A (en) * 1988-10-24 1989-06-27 E. I. Du Pont De Nemours And Company Spinning pack design
DE4132032C3 (de) * 1991-09-26 1998-01-08 Continental Ag Verfahren und Vorrichtung zum gleichzeitigen kontinuierlichen Herstellen mehrerer Strangprofile
US5616350A (en) * 1995-04-10 1997-04-01 Cincinnati Milacron Inc. Dual flow divider with diverter valve
US6409491B1 (en) 1998-04-23 2002-06-25 E. I. Du Pont De Nemours And Company Extrusion die assembly
US6793474B2 (en) * 2001-02-09 2004-09-21 American Maplan Corporation Method and system for dual co-extrusion
US7217442B2 (en) * 2001-12-20 2007-05-15 Ppg Industries, Ohio, Inc. Method and apparatus for mixing and applying a multi-component coating composition
DE10307335B4 (de) * 2003-02-21 2011-02-24 Battenfeld-Cincinnati Germany Gmbh Verfahren und Vorrichtung zur Ermittlung der Masseströme
US6994821B1 (en) * 2003-07-28 2006-02-07 Graham Engineering Corporation Dual parison blow molding and method
AU2004205194B2 (en) * 2003-08-29 2006-04-27 Mars, Incorporated Flow Distribution Device For An Extruder
DE102004041148A1 (de) * 2003-08-29 2005-03-24 Mars Incorporated Vorrichtung zum Verteilen einer Strömung für einen Extruder
US7632086B2 (en) * 2003-10-03 2009-12-15 Exxonmobil Chemical Patents Inc. Melt fracture reduction
US20070178183A1 (en) * 2004-03-08 2007-08-02 Burnden Holdings (Uk) Limited Extrusion apparatus and adapters therefor
US20060076703A1 (en) * 2004-10-13 2006-04-13 Looman Ernest W Jr Double flow channel for an extruder head
US7611347B1 (en) * 2009-04-08 2009-11-03 Wenger Manufacturing Inc. Extrusion die assembly for high density products
US20110117268A1 (en) * 2009-11-19 2011-05-19 Stratasys, Inc. Consumable materials having encoded markings for use with direct digital manufacturing systems
US20240227273A9 (en) * 2019-10-15 2024-07-11 Reifenhäuser GmbH & Co. KG Maschinenfabrik Melt conveyor for an extrusion tool of an extrusion system, extrusion tool, extrusion system and method for operating an extrusion system of this type
EP4059357A1 (de) * 2021-03-15 2022-09-21 Bühler AG Verteilvorrichtung für extruder

Also Published As

Publication number Publication date
ES391685A1 (es) 1973-07-16
BE767888A (fr) 1971-11-29
ZA713464B (en) 1972-02-23
IE35929B1 (en) 1976-07-07
AT321561B (de) 1975-04-10
DE2126200A1 (de) 1971-12-09
CH534047A (fr) 1973-03-28
NL7107270A (enExample) 1971-12-01
FR2087753A5 (enExample) 1971-12-31
SE374053B (enExample) 1975-02-24
US3819777A (en) 1974-06-25
LU63242A1 (enExample) 1972-03-08
BR7103268D0 (pt) 1973-04-19
IE35929L (en) 1971-11-29
GB1320848A (en) 1973-06-20

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