ATE234189T1 - Kontrolle von kühlung und dicke extrudierter gegenstände - Google Patents

Kontrolle von kühlung und dicke extrudierter gegenstände

Info

Publication number
ATE234189T1
ATE234189T1 AT95904225T AT95904225T ATE234189T1 AT E234189 T1 ATE234189 T1 AT E234189T1 AT 95904225 T AT95904225 T AT 95904225T AT 95904225 T AT95904225 T AT 95904225T AT E234189 T1 ATE234189 T1 AT E234189T1
Authority
AT
Austria
Prior art keywords
thickness
extrusion
cooling
air
local
Prior art date
Application number
AT95904225T
Other languages
English (en)
Inventor
Robert E Cree
Original Assignee
Addex Inc
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 Addex Inc filed Critical Addex Inc
Application granted granted Critical
Publication of ATE234189T1 publication Critical patent/ATE234189T1/de

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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/9125—Cooling of hollow articles of tubular films internally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • 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
    • B29C2948/92076—Position, e.g. linear or angular
    • 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
    • B29C2948/92104—Flow or feed rate
    • 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
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • 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
    • B29C2948/92428—Calibration, after-treatment, or cooling 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
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0094—Geometrical properties
    • B29K2995/0097—Thickness

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Of Metal (AREA)
AT95904225T 1993-12-01 1994-12-01 Kontrolle von kühlung und dicke extrudierter gegenstände ATE234189T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/160,233 US5468134A (en) 1993-12-01 1993-12-01 Cooling and thickness control for extruded products
PCT/US1994/013934 WO1995015251A1 (en) 1993-12-01 1994-12-01 Cooling and thickness control for extruded products

Publications (1)

Publication Number Publication Date
ATE234189T1 true ATE234189T1 (de) 2003-03-15

Family

ID=22576066

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95904225T ATE234189T1 (de) 1993-12-01 1994-12-01 Kontrolle von kühlung und dicke extrudierter gegenstände

Country Status (9)

Country Link
US (2) US5468134A (de)
EP (1) EP0682596B1 (de)
JP (1) JP3605114B2 (de)
AT (1) ATE234189T1 (de)
AU (1) AU693504B2 (de)
CA (1) CA2154068C (de)
DE (1) DE69432249T2 (de)
NZ (1) NZ277684A (de)
WO (1) WO1995015251A1 (de)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432513C2 (de) * 1994-09-13 1996-12-12 Reifenhaeuser Masch Anlage für die Herstellung von Blasfolien aus thermoplastischem Kunststoff
DE19631640C1 (de) * 1996-08-05 1998-04-02 Windmoeller & Hoelscher Verfahren zur Regelung der Foliendicke an einer Blasfolienanlage
US5804221A (en) * 1996-09-05 1998-09-08 Macro Engineering & Technology Inc. Air ring for cooling blown plastic film
DE19811595C1 (de) * 1998-03-17 1999-10-14 Windmoeller & Hoelscher Verfahren und Vorrichtung zum Verhindern einer Berührung zwischen einer Schlauchfolienblase und einem diese abtastenden Sensor
DE20022174U1 (de) * 1999-09-09 2001-05-17 Kdesign Gmbh Vorrichtung zur Steuerung und Regelung des Dickenprofils bei der Blasfolienherstellung
DE10029175B4 (de) * 1999-09-09 2004-10-07 Kdesign Gmbh Verfahren und Vorrichtung zur Steuerung und Regelung des Dickenprofils bei der Blasfolienherstellung
CA2330955C (en) * 2000-01-15 2009-06-30 Daniel R. Joseph Method and apparatus for lay flat control in an extruded film production line
EP1170112B1 (de) * 2000-07-05 2002-05-29 Plast-Control Gerätebau GmbH Kühlring
MY138928A (en) * 2000-09-19 2008-08-28 Toray Industries Sheet production method
JP2002120284A (ja) * 2000-10-17 2002-04-23 Sekisui Chem Co Ltd インフレーションフィルムの偏肉制御方法
EP1205293B1 (de) * 2000-11-10 2006-07-12 Plast-Control Gerätebau GmbH Verfahren zur Dickenmessung an Mehrschichtfolien
US6562263B2 (en) 2000-12-21 2003-05-13 Addex, Inc. Internal bubble cooling control system and method
CA2438493C (en) * 2001-03-05 2010-08-10 Herbert Fischer Film die for the production of tubular film
US6739855B2 (en) * 2001-03-15 2004-05-25 Addex, Inc. External thickness control and method
CA2355140A1 (en) * 2001-08-16 2003-02-16 Robert D. Krycki Motorized air ring
US8557884B2 (en) * 2002-05-31 2013-10-15 Owens Corning Intellectual Capital, Llc To enhance the thermal insulation of polymeric foam by reducing cell anisotropic ratio and the method for production thereof
DE10242175B4 (de) * 2002-09-10 2005-01-05 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Herstellung selbstreinigender Folien im Blasverfahren
DE10248366B4 (de) * 2002-10-17 2005-06-02 U.B.Tech.Gmbh Vorrichtung zur Regelung der Materialstärke, insbesondere während der Herstellung eines Blasfolienschlauches
US7150614B2 (en) * 2003-12-18 2006-12-19 Owens Corning Fiberglas Technology, Inc. Horizontal vacuum chamber seal control device
US20050189669A1 (en) * 2004-03-01 2005-09-01 Correct Building Products, L.L.C. Servo speed control in manufacture of composite lumber
US8092734B2 (en) * 2004-05-13 2012-01-10 Aptina Imaging Corporation Covers for microelectronic imagers and methods for wafer-level packaging of microelectronics imagers
US7806674B2 (en) * 2004-09-01 2010-10-05 Windmoeller & Hoelscher Kg Air ring for controlling blown film thickness provided with individual heat conducting segments
US8870106B2 (en) 2004-09-10 2014-10-28 Fellowes, Inc. Shredder with thickness detector
DE502005006274D1 (de) 2005-06-23 2009-01-29 Kdesign Gmbh Steuerbarer Kühlgasring mit Gleichrichtereinheit
US8672247B2 (en) * 2005-07-11 2014-03-18 Fellowes, Inc. Shredder with thickness detector
DE102005033205C5 (de) 2005-07-13 2017-10-12 Windmöller & Hölscher Kg Verfahren zur auftragsbezogenen Änderung des Folienschlauchformats von einem Ausgangsformat zu einem Endformat sowie Blasfolienanlage, an der diese Änderung durchführbar ist
DE102005033206B4 (de) * 2005-07-13 2010-12-02 Windmöller & Hölscher Kg Blasfolienanlage sowie Verfahren zum Betrieb derselben
US20080061460A1 (en) * 2006-09-08 2008-03-13 Richard Zimmermann Method and device for the production of blown tubular film
US20110112677A1 (en) * 2009-11-11 2011-05-12 Albert John Franklin Method for controlling a physical property of a tubular blown film
US9050760B2 (en) 2011-12-15 2015-06-09 Ndc Technologies, Inc. Blown film scanning method
JP5634630B1 (ja) * 2014-04-14 2014-12-03 株式会社湘南貿易 偏肉調整型エアーリング
US20170239867A1 (en) * 2014-05-13 2017-08-24 Brampton Engineering Inc. Pressure chamber for blown film extrusion
US9815238B2 (en) 2014-06-30 2017-11-14 Inteplast Group Corporation Blown film with integral profiles
US20170232653A1 (en) * 2014-10-15 2017-08-17 Windmöller & Hölscher Kg Method and Device for the Production and Further Processing of a Film Tube
JP6366527B2 (ja) * 2015-03-11 2018-08-01 住友重機械モダン株式会社 フィルム成形装置のバルブ装置
DE102015006891A1 (de) * 2015-06-03 2016-09-01 Reifenhäuser GmbH & Co. KG Maschinenfabrik Anlage zum Herstellen einer Folienbahn sowie Verfahren zum Betreiben einer solchen Anlage
CN104943037B (zh) * 2015-06-30 2017-09-22 福耀集团（上海）汽车玻璃有限公司 一种玻璃膜片拉膜冷却系统
DE102015016825A1 (de) * 2015-12-26 2017-06-29 Reifenhäuser GmbH & Co. KG Maschinenfabrik Kühlring für eine Blasfolienanlage, Blasfolienanlage und Verfahren zum Betreiben einer Blasfolienanlage
CN106827481B (zh) * 2017-01-17 2022-09-30 瑞安市铭德机械有限公司 吹膜设备
IT201700055831A1 (it) * 2017-05-23 2018-11-23 Syncro S R L Dispositivo e metodo per regolare il profilo di spessore nella produzione di film soffiati
US11072103B2 (en) 2017-06-26 2021-07-27 Inteplast Group Corporation Extrusion system and method for blown film with integral profiles
CA2974587A1 (en) 2017-07-27 2019-01-27 Layfield Group Ltd. Method and apparatus for extruding blown film with a controlled thickness profile
EP3873736A4 (de) * 2018-11-01 2022-06-22 MuCell Extrusion LLC Geschäumte folie mit tpe und daraus resultierende produkte und verfahren zur herstellung davon
JP7212570B2 (ja) * 2019-03-29 2023-01-25 住友重機械工業株式会社 フィルム成形装置
US11618200B2 (en) 2020-03-17 2023-04-04 Michael P. Bucko External cooling air ring for blown-film extrusion
JP7393281B2 (ja) * 2020-03-31 2023-12-06 住友重機械工業株式会社 インフレーション成形装置
CN112793141B (zh) * 2020-12-24 2022-07-19 重庆瑞霆塑胶有限公司 用于吹塑薄膜的压辊机构
CN113510918B (zh) * 2021-08-02 2022-12-02 东莞欧德雅装饰材料有限公司 一种封边条制造机器人
US11826941B1 (en) 2022-06-28 2023-11-28 Daniel R. Joseph Air ring for blown-film extrusion apparatus
EP4349564A1 (de) 2022-10-04 2024-04-10 Plast-Control GmbH Kühlring zum kühlen eines folienschlauches

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125616A (en) * 1964-03-17 Process for the production of thermoplastic polymeric
NL280138A (de) * 1961-06-26 1900-01-01
BE623883A (de) * 1961-10-23 1900-01-01
US3261893A (en) * 1962-10-04 1966-07-19 Goodyear Tire & Rubber Thermally adjusted casting blade
BE642865A (de) * 1963-01-23 1900-01-01
US3341388A (en) * 1964-05-20 1967-09-12 Phillips Petroleum Co Method and apparatus for the uniform extruding of thermoplastic film
US3775035A (en) * 1970-01-12 1973-11-27 Owens Illinois Inc Foam plastic extrusion apparatus with plurality of die lip temperature controls
US3835209A (en) * 1971-11-09 1974-09-10 Owens Illinois Inc Process of extruding a foamed extrudate and controlling the thickness thereof
US3819775A (en) * 1972-08-15 1974-06-25 R Mules Method of making polymeric film
JPS515021A (ja) * 1974-07-01 1976-01-16 Ricoh Kk Renzokuyoshiokurisochino hitsupariroorasochi
US4209475A (en) * 1978-10-20 1980-06-24 Mobil Oil Corporation Method and apparatus for effecting uniform film thickness
DE2947293C2 (de) * 1979-11-23 1983-09-15 Windmöller & Hölscher, 4540 Lengerich Verfahren zur Regelung der Foliendicke an einer Blasfolien-Extruderanlage
DE3002903C2 (de) * 1980-01-28 1986-12-04 Windmöller & Hölscher, 4540 Lengerich Verfahren zur Regelung der Foliendicke an einer Blasfolienextruderanlage
DE3014989C2 (de) * 1980-04-18 1991-01-24 Windmöller & Hölscher, 4540 Lengerich Verfahren zur Steuerung der Foliendicke an einer Blasfolienextruderanlage
US4443400A (en) * 1982-08-11 1984-04-17 Mobil Oil Corporation Method and apparatus for the formation of profiled thermoplastic film
CH658425A5 (de) * 1982-08-26 1986-11-14 Gottlieb Looser Verfahren zur herstellung von blasschlauchfolien und vorrichtung zur durchfuehrung des verfahrens.
DE3518155A1 (de) * 1985-05-21 1986-11-27 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf Verfahren zur herstellung einer kunststoffolie mit geringer dickentoleranz
EP0256490B1 (de) * 1986-08-12 1992-04-29 Toshiba Kikai Kabushiki Kaisha Durch Heizen einstellbare Breitschlitzdüse
DE3631503C1 (de) * 1986-09-16 1987-09-24 Windmoeller & Hoelscher Verfahren zur Herstellung von Rollen aus extrudierten Folienbahnen
DE8816700U1 (de) * 1988-06-16 1990-04-12 Reifenhaeuser Gmbh & Co Maschinenfabrik, 5210 Troisdorf, De
JPH0698671B2 (ja) * 1989-03-30 1994-12-07 トミー機械工業株式会社 溶融押出式フイルム成形の膜厚制御装置
DE59002496D1 (de) * 1989-06-21 1993-09-30 Stefan Konermann Verfahren und vorrichtung zur blasfolienherstellung.
DE4013610A1 (de) * 1989-10-26 1991-05-02 Reifenhaeuser Masch Verfahren zum betrieb einer blasfolien-extruderanlage und fuer das verfahren eingerichtete blasfolien-extruderanlage
US5104593A (en) * 1990-03-21 1992-04-14 Joseph Daniel R Method and apparatus for gauging and controlling circumference of extrusion-blown film
US5310329A (en) * 1992-02-05 1994-05-10 Cree Robert E Air shroud device for a blown film extrusion line
DE9202272U1 (de) * 1992-02-21 1992-04-23 Reifenhaeuser Gmbh & Co Maschinenfabrik, 5210 Troisdorf, De

Also Published As

Publication number Publication date
EP0682596B1 (de) 2003-03-12
JP3605114B2 (ja) 2004-12-22
AU693504B2 (en) 1998-07-02
WO1995015251A1 (en) 1995-06-08
DE69432249T2 (de) 2003-12-11
US5468134A (en) 1995-11-21
AU1300195A (en) 1995-06-19
JPH08509176A (ja) 1996-10-01
NZ277684A (en) 1997-11-24
DE69432249D1 (de) 2003-04-17
EP0682596A1 (de) 1995-11-22
CA2154068C (en) 2005-10-25
CA2154068A1 (en) 1995-06-08
US5676893A (en) 1997-10-14
EP0682596A4 (de) 1997-08-20

Similar Documents

Publication Publication Date Title
DE69432249D1 (de) Kontrolle von kühlung und dicke extrudierter gegenstände
DK1115550T3 (da) Apparat til fremstilling af kunststofrør
EP0273985A4 (de) Vorrichtung und verfahren zur herstellung von thermoplastischen harzfilmen.
GB1349992A (en) Extrusion die
FI910905A0 (fi) Laite polymeeriperustaisen profiilin pursottamiseksi suoraan lasilevynympärykselle
EP2047963A3 (de) Vorrichtung zum Folienstrangpressen
DK368386D0 (da) Fremgangsmaade til fremstilling af oppustet film
CA2317892A1 (en) Method of and device for controlling and automatically controlling the thickness profile in the production of blown film
CA2054889A1 (en) Extrusion die for thermoplastic webs
CA2440638A1 (en) External thickness control and method
CA2191885A1 (en) Method of blow molding hollow articles from thermoplastic synthetic resin
DK0837745T3 (da) Forbedringer i eller i forbindelse med fremstillingen af ekstruderingsmatricer
FR2302188A1 (fr) Boudineuse pour tuyaux en matiere plastique
DK0943881T3 (da) Fremgangsmåde til regulering af transporthastigheden af en ristköler
US20210107201A1 (en) System and method for reducing draw resonance in plants for the production of plastic film
AU2130797A (en) Extruding thin multiphase polymer films
SE8900845L (sv) Saett vid extrudering av plastroer
KR840001880A (ko) 플라스틱필름 성형방법과 그 장치
DK0524697T3 (da) Køleindretning for extruderhoveder til rørformede plasticfolier
JPS56162624A (en) Method and device for plastic molding
DE69513012D1 (de) Vorrichtung zur Steuerung der Temperatur eines Extrusionszylinders
DK0444224T3 (da) Reguleringsindretning til et ekstruder-dysehoved
FR2693400B1 (fr) Ensemble de plastification et de filtration en continu pour des matières telles que des polymères à l'état pâteux, visqueux ou fondu, produits visco élastiques, produits protéoléagineux.
JPH05116199A (ja) シート押出用口金
JP2636981B2 (ja) 無機質製品の押出成形口金

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties