CA2266381A1 - Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor - Google Patents

Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor

Info

Publication number
CA2266381A1
CA2266381A1 CA002266381A CA2266381A CA2266381A1 CA 2266381 A1 CA2266381 A1 CA 2266381A1 CA 002266381 A CA002266381 A CA 002266381A CA 2266381 A CA2266381 A CA 2266381A CA 2266381 A1 CA2266381 A1 CA 2266381A1
Authority
CA
Canada
Prior art keywords
extruder
stream
throttle
molding
extrusion
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
CA002266381A
Other languages
French (fr)
Other versions
CA2266381C (en
Inventor
Paul Swenson
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.)
Kortec Inc
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 CA2266381A1 publication Critical patent/CA2266381A1/en
Application granted granted Critical
Publication of CA2266381C publication Critical patent/CA2266381C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C45/16—Making multilayered or multicoloured 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1603—Multi-way nozzles specially adapted therefor
    • B29C45/1607—Multi-way nozzles specially adapted therefor having at least three different ways
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1603—Multi-way nozzles specially adapted therefor
    • B29C2045/1614—Multi-way nozzles specially adapted therefor side-by-side flow of materials in the same channel

Abstract

A novel multiple-plastic stream co-extruder and method, as for injection-molding cavities, in which the extruder is internally provided therewithin and therealong with a restrictor or throttle pin, rod or element that forces combined plastic material streams, formed with an interior core stream encased in outer and inner stream layers, into corresponding concentric annular flow stream layers that are ultimately split transversely in opposite directions into a cavity gated to the extruder, and with the core stream at a region of zero gradient in the transverse flow velocity profile within the extruder and cavity.
CA002266381A 1996-09-27 1996-12-06 Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor Expired - Fee Related CA2266381C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/720,385 US5914138A (en) 1996-09-27 1996-09-27 Apparatus for throttle-valving control for the co-extrusion of plastic materials as interior core streams encased by outer and inner streams for molding and the like
US720,385 1996-09-27
PCT/IB1996/001369 WO1998013187A1 (en) 1996-09-27 1996-12-06 Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor

Publications (2)

Publication Number Publication Date
CA2266381A1 true CA2266381A1 (en) 1998-04-02
CA2266381C CA2266381C (en) 2006-08-01

Family

ID=24893822

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002266381A Expired - Fee Related CA2266381C (en) 1996-09-27 1996-12-06 Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor

Country Status (20)

Country Link
US (2) US5914138A (en)
EP (1) EP0929390B1 (en)
JP (1) JP3544992B2 (en)
KR (1) KR100443136B1 (en)
CN (1) CN1082875C (en)
AU (1) AU719376B2 (en)
BR (1) BR9612791A (en)
CA (1) CA2266381C (en)
CZ (1) CZ292815B6 (en)
DE (1) DE69622763T2 (en)
DK (1) DK0929390T3 (en)
ES (1) ES2183015T3 (en)
HK (1) HK1023308A1 (en)
HU (1) HU222153B1 (en)
IL (1) IL129069A (en)
PL (1) PL182365B1 (en)
PT (1) PT929390E (en)
RU (1) RU2175288C2 (en)
SK (1) SK40499A3 (en)
WO (1) WO1998013187A1 (en)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6062840A (en) 1997-09-02 2000-05-16 Dynisco Hotrunners, Inc. Hot runner system for coinjection molding
US6352426B1 (en) 1998-03-19 2002-03-05 Advanced Plastics Technologies, Ltd. Mold for injection molding multilayer preforms
TWI250934B (en) 1997-10-17 2006-03-11 Advancsd Plastics Technologies Barrier-coated polyester articles and the fabrication method thereof
CA2219257C (en) * 1997-10-23 2005-05-31 Mold-Masters Limited Sprue gated five layer injection molding apparatus
US6562276B1 (en) * 1998-08-20 2003-05-13 Eastman Chemical Company Process for forming a multilayer, coinjected article
WO2000054955A1 (en) * 1999-03-18 2000-09-21 Mold-Masters Limited Apparatus and method for multi-layer injection molding
US6655945B1 (en) 1999-03-18 2003-12-02 Mold Masters Limited Apparatus and method for multi-layer injection molding
US6440350B1 (en) * 1999-03-18 2002-08-27 Mold-Masters Limited Apparatus and method for multi-layer injection molding
KR100856744B1 (en) 2000-09-05 2008-09-04 어드밴스드 플라스틱스 테크놀로지즈 룩셈부르크 에스.에이. Multilayer containers and preforms having barrier properties utilizing recycled material
US20030161977A1 (en) * 2001-04-06 2003-08-28 Douglas Sabin Four layer nozzle for forming four layer articles
US6908581B2 (en) * 2001-04-06 2005-06-21 Kortec, Inc. Optimized flow to prevent core layer breakthrough
US6596213B2 (en) * 2001-04-06 2003-07-22 Kortec, Inc. Method of molding multi-layer polymer plastic articles with control of relative shifting of the core layer
ES2693703T3 (en) 2001-06-18 2018-12-13 Becton, Dickinson And Company Process to form multi-layer containers
US6649101B2 (en) 2001-07-31 2003-11-18 Kortec, Inc. Method for using a sprue to reduce the size of a core layer hole in an injection molding process by terminating an injection stream within the sprue
EP1478501A1 (en) * 2002-01-31 2004-11-24 Kortec, Inc. Optimized flow to prevent core layer breakthrough
WO2003064134A1 (en) * 2002-02-01 2003-08-07 Kortec, Inc. Four layer nozzle for forming four layer articles
WO2004043675A1 (en) * 2002-11-08 2004-05-27 Advanced Plastics Technologies Ltd Injection mold having a wear resistant portion and a high heat transfer portion and a method for forming a preform
US7306446B2 (en) * 2003-05-21 2007-12-11 Kortec, Inc. Co-injection nozzle with improved interior layer termination
US7517480B2 (en) * 2003-08-18 2009-04-14 Kortec, Inc. Automatic process control for a multilayer injection molding apparatus
US20050136201A1 (en) * 2003-12-22 2005-06-23 Pepsico, Inc. Method of improving the environmental stretch crack resistance of RPET without solid stating
US20050221036A1 (en) * 2004-04-01 2005-10-06 The Coca-Cola Company Polyester composition with enhanced gas barrier, articles made therewith, and methods
KR20070010059A (en) 2004-04-16 2007-01-19 어드밴스드 플라스틱스 테크놀로지즈 룩셈부르크 에스.에이. Mono and multi-layer articles and injection molding methods of making the same
WO2006014543A2 (en) * 2004-07-07 2006-02-09 Kortec, Inc. Multilayer molding using temperature adjustment of flow rate in conjunction with shooting pot technology
US8545952B2 (en) * 2005-06-07 2013-10-01 The Coca-Cola Company Polyester container with enhanced gas barrier and method
US20070020416A1 (en) * 2005-07-22 2007-01-25 Dean David M Blow molded hollow articles and bottles made from trivalent cation neutralized ionomers
WO2007027606A1 (en) 2005-08-30 2007-03-08 Advanced Plastics Technologies Luxembourg S.A. Methods and systems for controlling mold temperatures
US7820258B2 (en) * 2005-10-05 2010-10-26 The Coca-Cola Company Container and composition for enhanced gas barrier properties
US7765949B2 (en) * 2005-11-17 2010-08-03 Palo Alto Research Center Incorporated Extrusion/dispensing systems and methods
US7790077B2 (en) * 2006-09-15 2010-09-07 The Coca-Cola Company Pressurized tooling for injection molding and method of using
US8124202B2 (en) * 2006-09-15 2012-02-28 The Coca-Cola Company Multilayer container for enhanced gas barrier properties
PT2014562E (en) * 2007-07-12 2011-05-23 Superfos As Method of manufacturing a packaging article having iml barrier film in combination with an oxygen scavenger
FR2948056B1 (en) 2009-07-16 2011-07-22 Outinov SYSTEM FOR INJECTING A MULTI-LAYER MOLDED ARTICLE
FI20096328A (en) * 2009-12-15 2011-06-16 Fiskars Brands Finland Oy Ab Procedure for the manufacture of hand tool handles and hand tool handles
PT2544870T (en) * 2010-03-08 2018-08-10 Milacron Llc Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer
GB2478732B (en) 2010-03-15 2014-08-20 Kraft Foods R & D Inc Improvements in injection moulding
KR101863897B1 (en) 2010-04-23 2018-05-31 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 Multilayered container, die for multilayered container, and method for producing multilayered container
PL2593285T3 (en) * 2010-07-16 2019-08-30 Milacron Llc Improved gas impermeability for injection molded containers
US8469687B2 (en) 2010-09-21 2013-06-25 Mold-Masters (2007) Limited Coinjection hot runner injection molding system
US9498911B2 (en) 2010-09-21 2016-11-22 Mold-Masters (2007) Limited Coinjection hot runner injection molding system
CN103347672B (en) 2010-11-24 2016-02-17 考泰克公司 Heat seal undesirable condition prevention method and goods
WO2013028933A1 (en) * 2011-08-23 2013-02-28 Kortec, Inc. Methods and systems for the preparation of molded plastic articles having a structural barrier layer
WO2013040096A1 (en) 2011-09-12 2013-03-21 E. I. Du Pont De Nemours And Company Low pearlescence compositions
US9073246B2 (en) 2011-09-21 2015-07-07 Mold-Masters (2007) Limited Coinjection hot runner injection molding system
US8491290B2 (en) 2011-10-21 2013-07-23 Kortec, Inc. Apparatus for producing non-symmetric multiple layer injection molded products
EP2969463B1 (en) 2013-03-14 2020-10-21 Milacron LLC Individual cavity flow control method and system for co-injection molding
US9221204B2 (en) 2013-03-14 2015-12-29 Kortec, Inc. Techniques to mold parts with injection-formed aperture in gate area
WO2014152014A1 (en) 2013-03-15 2014-09-25 Kortec, Inc. Methods and systems for the preparation of molded plastic articles having a structural barrier layer
US20160151935A1 (en) * 2013-07-12 2016-06-02 Plastipak Packaging, Inc. Co-injection method, preform, and container
CH710340A1 (en) 2014-11-06 2016-05-13 Fostag Formenbau Ag Co-injection nozzle for an injection molding apparatus for manufacturing multi-layer injection molding products.
CH710339A1 (en) 2014-11-06 2016-05-13 Fostag Formenbau Ag Co-injection nozzle with integrated check valve for an injection molding apparatus for manufacturing multi-layer injection molding products.
US10807298B2 (en) 2015-12-29 2020-10-20 Whirlpool Corporation Molded gas barrier parts for vacuum insulated structure
MX2018012105A (en) * 2016-04-06 2019-03-28 Amcor Rigid Plastics Usa Llc Multi-layer preform and container.
US10220559B2 (en) 2016-05-18 2019-03-05 Axel Werner Van Briesen Method and apparatus for making form-in-place gaskets
US11009662B2 (en) * 2017-09-05 2021-05-18 Facebook Technologies, Llc Manufacturing a graded index profile for waveguide display applications
US11298861B2 (en) 2017-11-21 2022-04-12 Silgan Specialty Packaging Llc Multi-layer injection molded container

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894823A (en) * 1971-09-07 1975-07-15 Robert Hanning Apparatus for injection molding of parts of synthetic material
US4035466A (en) * 1972-09-27 1977-07-12 Erhard Langecker Method for central injection molding
US4174413A (en) 1976-07-27 1979-11-13 Asahi-Dow Limited Multi-layered molded articles
US4956143A (en) 1981-09-16 1990-09-11 Taut, Inc. Method and apparatus for the multi-unit production of thin-walled tubular products utilizing an injection molding technique
US4611987A (en) 1984-07-23 1986-09-16 Cosden Technology, Inc. Apparatus for forming multilayer thermoplastic resin extrusions
GB8616460D0 (en) * 1986-07-05 1986-08-13 Metal Box Plc Manufacture of articles
US4781572A (en) 1987-10-09 1988-11-01 Sonoco Products Company Self-regulating gate valve assembly for injection molding apparatus
US5131830A (en) * 1987-10-30 1992-07-21 Nissei Asb Machine Co., Ltd. Multi-layer molding nozzle
DE3831836A1 (en) * 1988-09-20 1990-03-22 Kautex Maschinenbau Gmbh METHOD AND DEVICE FOR PRODUCING HOLLOW BODIES FROM THERMOPLASTIC PLASTIC
US5156857A (en) * 1988-11-23 1992-10-20 American National Can Company Extrusion die for extrusion blow molding equipment
US5556582A (en) 1995-02-17 1996-09-17 Stanford University Injection molding gate flow control

Also Published As

Publication number Publication date
EP0929390B1 (en) 2002-07-31
IL129069A0 (en) 2000-02-17
EP0929390A1 (en) 1999-07-21
CN1234763A (en) 1999-11-10
DE69622763T2 (en) 2003-03-20
ES2183015T3 (en) 2003-03-16
PL182365B1 (en) 2001-12-31
SK40499A3 (en) 2000-03-13
CN1082875C (en) 2002-04-17
US5914138A (en) 1999-06-22
JP3544992B2 (en) 2004-07-21
KR20000048647A (en) 2000-07-25
BR9612791A (en) 2000-02-01
JP2001504763A (en) 2001-04-10
PT929390E (en) 2002-12-31
DK0929390T3 (en) 2002-11-04
CZ105999A3 (en) 1999-10-13
HK1023308A1 (en) 2000-09-08
CZ292815B6 (en) 2003-12-17
KR100443136B1 (en) 2004-08-04
HUP9904276A3 (en) 2000-05-29
CA2266381C (en) 2006-08-01
HU222153B1 (en) 2003-04-28
AU7637496A (en) 1998-04-17
HUP9904276A2 (en) 2000-04-28
AU719376B2 (en) 2000-05-11
IL129069A (en) 2002-07-25
US6187241B1 (en) 2001-02-13
PL332507A1 (en) 1999-09-13
DE69622763D1 (en) 2002-09-05
WO1998013187A1 (en) 1998-04-02
RU2175288C2 (en) 2001-10-27

Similar Documents

Publication Publication Date Title
CA2266381A1 (en) Method of throttle-valving control for the co-extrusion of plastic materials as for molding and the like, and apparatus therefor
RU99108733A (en) METHOD FOR CONTROLLING JOINT EXTRUSION OF PLASTICS USING THROTTLE VALVE, FOR EXAMPLE, FOR THE PURPOSE OF THEIR FORMING, AND A DEVICE FOR IMPLEMENTING THIS METHOD
CA2285131A1 (en) Method for the continuous manufacture of a twin-wall pipe having a pipe socket and apparatus for putting the method into practice
CA2247867A1 (en) Multiple gating nozzle
EP0635542A3 (en) Fiber reinforced thermoplastic resin, process for production of same, and extruder
DE69032210D1 (en) PRE-IMPREGNATED COMPOSITE MOLDS AND PRODUCTION OF A COMPOSITE MOLD
FI955960A0 (en) Flerskiktsplastroer
EP0381402A3 (en) Split extrusion die assembly for thermoplastic materials and methods of using the same
SG68677A1 (en) Process for manufacturing a plastic composite profile plant for the implementation of the process and plastic composite profile
CA2189673A1 (en) Process for Producing Molded Article Made of Synthetic Resin
GB2225277B (en) Method of fabricating fiber reinforced composite articles by resin transfer molding
CA2004210A1 (en) Windows for automobiles or the like, and method of manufacturing the same
CA2264196A1 (en) Drum-like container of plastic and process and device for its production
CA2070037A1 (en) Coinjected plastic garment hangers, method of molding hangers and apparatus for implementing method
FR2738768B1 (en) SOLID PROFILE EXTRUDED IN PLASTIC MATERIAL WITH THE APPEARANCE OF WOOD
IE832504L (en) Producing plastics foil.
JPS5530921A (en) Co-extrusion molding method
AU2002222611A1 (en) Molding tool formed of gradient composite material and method of producing the same
AU581304B2 (en) Tyre constructional method
PT82201A (en) Process for the manufacture of a tubular semimanufactured article of plastics for the manufacture of sacks
WO2005042225A3 (en) Method and device for the production of a lens with a graduated colour shade
EP0692363A3 (en) Coextrusion head for blow-thermoforming machines with rapid changing of the coloured layers of the extruded plastic
CA2051114A1 (en) Shaped article of resin and method for production thereof
CA2462150A1 (en) Multiple gating nozzle
JPS6168216U (en)

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed