CA2367746A1 - 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
CA2367746A1
CA2367746A1 CA002367746A CA2367746A CA2367746A1 CA 2367746 A1 CA2367746 A1 CA 2367746A1 CA 002367746 A CA002367746 A CA 002367746A CA 2367746 A CA2367746 A CA 2367746A CA 2367746 A1 CA2367746 A1 CA 2367746A1
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CA
Canada
Prior art keywords
flow
melt channel
channel
melt
central
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
CA002367746A
Other languages
French (fr)
Other versions
CA2367746C (en
Inventor
Denis L. Babin
Jobst U. Gellert
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
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
Priority to CA2643346A priority Critical patent/CA2643346C/en
Publication of CA2367746A1 publication Critical patent/CA2367746A1/en
Application granted granted Critical
Publication of CA2367746C publication Critical patent/CA2367746C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B29C45/1646—Injecting parison-like 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
    • 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 muli-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 central melt channel (78). The central melt channel (78) has a first portion (108) for flow of a first material (200), a second portion (104) for flow of the first material (200) 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 (200) and the second material (300) from the central melt channel (78), and for receiving flow of the first material (200) from the annular melt channel (76). In addition, the apparatus and method include a melt passage (42) having a first melt portion (44) in communication with the central melt channel (78), and a second melt portion (43) in communication with the annular melt channel (76).
CA002367746A 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding Expired - Lifetime CA2367746C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2643346A CA2643346C (en) 1999-03-18 2000-03-17 Injection molding apparatus with melt mixer in manifold

Applications Claiming Priority (3)

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
US09/271,835 1999-03-18
PCT/IB2000/000305 WO2000054956A1 (en) 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2643346A Division CA2643346C (en) 1999-03-18 2000-03-17 Injection molding apparatus with melt mixer in manifold

Publications (2)

Publication Number Publication Date
CA2367746A1 true CA2367746A1 (en) 2000-09-21
CA2367746C CA2367746C (en) 2008-12-16

Family

ID=23037292

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2643346A Expired - Lifetime CA2643346C (en) 1999-03-18 2000-03-17 Injection molding apparatus with melt mixer in manifold
CA002367746A Expired - Lifetime CA2367746C (en) 1999-03-18 2000-03-17 Apparatus and method for multi-layer injection molding

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2643346A Expired - Lifetime CA2643346C (en) 1999-03-18 2000-03-17 Injection molding apparatus with melt mixer in manifold

Country Status (7)

Country Link
US (2) US6655945B1 (en)
EP (1) EP1163096B1 (en)
JP (2) JP4545322B2 (en)
AU (1) AU2935600A (en)
CA (2) CA2643346C (en)
DE (1) DE60006653T2 (en)
WO (1) WO2000054956A1 (en)

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PL2618982T3 (en) 2010-09-21 2019-04-30 Mold Masters 2007 Ltd Coinjection hot runner injection molding system
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US9073246B2 (en) 2011-09-21 2015-07-07 Mold-Masters (2007) Limited Coinjection hot runner injection molding system
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JP5910953B2 (en) * 2015-03-05 2016-04-27 株式会社吉野工業所 Preform injection molding method
KR20170029860A (en) * 2015-09-08 2017-03-16 삼성전자주식회사 Case for mobile phone and injection mold for the same
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Also Published As

Publication number Publication date
JP2002538993A (en) 2002-11-19
EP1163096A1 (en) 2001-12-19
AU2935600A (en) 2000-10-04
CA2643346A1 (en) 2000-09-21
JP4545322B2 (en) 2010-09-15
CA2643346C (en) 2011-07-19
CA2367746C (en) 2008-12-16
DE60006653D1 (en) 2003-12-24
WO2000054956A1 (en) 2000-09-21
JP4889862B2 (en) 2012-03-07
US6648622B1 (en) 2003-11-18
US6655945B1 (en) 2003-12-02
JP2002538994A (en) 2002-11-19
EP1163096B1 (en) 2003-11-19
DE60006653T2 (en) 2004-04-15

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