CA2367737A1 - Apparatus and method for multi-layer injection molding - Google Patents

Apparatus and method for multi-layer injection molding Download PDF

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Publication number
CA2367737A1
CA2367737A1 CA002367737A CA2367737A CA2367737A1 CA 2367737 A1 CA2367737 A1 CA 2367737A1 CA 002367737 A CA002367737 A CA 002367737A CA 2367737 A CA2367737 A CA 2367737A CA 2367737 A1 CA2367737 A1 CA 2367737A1
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CA
Canada
Prior art keywords
channel
flow
melt
central
melt channel
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
CA002367737A
Other languages
French (fr)
Other versions
CA2367737C (en
Inventor
Jobst U. Gellert
Denis L. Babin
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.)
Mold Masters 2007 Ltd
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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
Priority claimed from US09/271,835 external-priority patent/US6655945B1/en
Application filed by Individual filed Critical Individual
Publication of CA2367737A1 publication Critical patent/CA2367737A1/en
Application granted granted Critical
Publication of CA2367737C publication Critical patent/CA2367737C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B29C45/1603—Multi-way nozzles specially adapted therefor
    • B29C2045/1614—Multi-way nozzles specially adapted therefor side-by-side flow of materials in the same channel
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2725—Manifolds
    • B29C2045/273—Manifolds stacked manifolds

Abstract

An injection molding apparatus and method for multi-layer molding of preforms and closures has a central melt channel (78), an annular melt channel (76) radially spaced from the central melt channel (78), and an annular ring channel (106) surrounding the centrral melt channel (78). The central melt channel (78) has a first portion (108) for flow of a first material (250), a second portion (104) for flow of the first material (250) and a second material (300), and a flow extension (105) connecting the first portion (108) and the second portion (104).
The flow extension (105) has a flow opening (109) in communication with the annular ring channel (106) for flow of the second material (300). The apparatus and method also include a cavity (36) for receiving flow of the first material (250) and the second material (300) from the central melt channel (78), and for receiving flow of a third material (200) from the annular melt channel (76). In addition, the apparatus and method include a first melt passage (42) in communicaiton with the annular melt channel (76), a second melt passage (44) in communication with the annular ring channel (106), and a third melt passage (118) in communication with the central channel (78).
CA002367737A 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding Expired - Lifetime CA2367737C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/271,835 US6655945B1 (en) 1999-03-18 1999-03-18 Apparatus and method for multi-layer injection molding
US09/274,443 1999-03-22
US09/271,835 1999-03-22
US09/274,443 US6648622B1 (en) 1999-03-18 1999-03-22 Apparatus and method for multi-layer injection molding
PCT/IB2000/000298 WO2000054954A1 (en) 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding

Publications (2)

Publication Number Publication Date
CA2367737A1 true CA2367737A1 (en) 2000-09-21
CA2367737C CA2367737C (en) 2008-09-02

Family

ID=26955137

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002367737A Expired - Lifetime CA2367737C (en) 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding

Country Status (7)

Country Link
US (1) US6440350B1 (en)
EP (1) EP1163097B1 (en)
JP (1) JP4545321B2 (en)
AU (1) AU3184700A (en)
CA (1) CA2367737C (en)
DE (1) DE60006654T2 (en)
WO (1) WO2000054954A1 (en)

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Also Published As

Publication number Publication date
WO2000054954A1 (en) 2000-09-21
DE60006654T2 (en) 2004-04-15
AU3184700A (en) 2000-10-04
EP1163097B1 (en) 2003-11-19
JP4545321B2 (en) 2010-09-15
DE60006654D1 (en) 2003-12-24
EP1163097A1 (en) 2001-12-19
CA2367737C (en) 2008-09-02
US6440350B1 (en) 2002-08-27
JP2002538992A (en) 2002-11-19

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