CA2553642A1 - Injection molding - Google Patents

Injection molding Download PDF

Info

Publication number
CA2553642A1
CA2553642A1 CA002553642A CA2553642A CA2553642A1 CA 2553642 A1 CA2553642 A1 CA 2553642A1 CA 002553642 A CA002553642 A CA 002553642A CA 2553642 A CA2553642 A CA 2553642A CA 2553642 A1 CA2553642 A1 CA 2553642A1
Authority
CA
Canada
Prior art keywords
preform
pocket
pair
core portion
mold
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
CA002553642A
Other languages
French (fr)
Other versions
CA2553642C (en
Inventor
Albert R. Anctil
Richard L. Allen
Tasadduq Hussain
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.)
Centor Inc
Original Assignee
Owens-Illinois Prescription Products Inc.
Albert R. Anctil
Richard L. Allen
Tasadduq Hussain
Rexam Prescription Products 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 Owens-Illinois Prescription Products Inc., Albert R. Anctil, Richard L. Allen, Tasadduq Hussain, Rexam Prescription Products Inc. filed Critical Owens-Illinois Prescription Products Inc.
Publication of CA2553642A1 publication Critical patent/CA2553642A1/en
Application granted granted Critical
Publication of CA2553642C publication Critical patent/CA2553642C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/33Moulds having transversely, e.g. radially, movable mould parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D50/00Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
    • B65D50/04Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
    • B65D50/045Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
    • B65D50/046Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring and such deformation causes the disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25Solid
    • B29K2105/253Preform
    • B29K2105/258Tubular
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058Undercut

Abstract

A method and apparatus for injection molding an article (10) including a radially extending child resistant feature (22). Finish block halves (216,218) are provided that include a pocket (246) and that are closable together to form a neck-finish mold cavity. Mold body halves (220,222) are provided that include a core portion (249) and that are closable together to form a body mold cavity. The core portion (249) is advanceable toward the pocket (246) to cooperate therewith to define a cavity for forming the child resistant feature (22). The core portion (249 may be integrally formed into one or more of the mold body halves (220,222), or may be separately mounted and relatively movable with respect thereto.

Claims (6)

1.
Apparatus for injection molding a plastic preform (110) for subsequent blow molding into a container (10) having a neck finish (14) and a closure release element (22) cantilevered radially outwardly from said neck finish, said apparatus comprising:
a pair of preform finish blocks (216, 218 or 310) that, when brought together, form a mold cavity for said neck finish and having an axis, and a pair of preform mold bodies (220, 222 or 312) that, when brought together, form a mold cavity for the preform body, where in one of said pair of preform finish blocks (218 or 310) has an axially opening pocket (246 or 318, 320) for forming a portion of said closure release element; and one of said pair of preform mold bodies (222 or 312) includes a core portion (244 or 334) that is movable in the direction of said axis into said pocket to form with said pocket a mold cavity for injection molding said closure release element.
2.
The apparatus set forth in claim 1 wherein said one finish block (218 or 310) has a surface facing axially toward said one mold body (222 or 312), said pocket opening at said surface toward said one mold body.
3.
The apparatus as set forth in claim 2 wherein said core portion (244) is disposed in fixed position on said one of said pair of preform mold bodies (222), said one of said pair of preform mold bodies being movable in the direction of said axis toward said one of said pair of preform finish blocks (218) to move said core portion axially into said pocket (246) to form said mold cavity for said closure release element, whereby said one of said pair of preform mold bodies is retractable to move said core portion out of said pocket.
4.
The apparatus as set forth in claim 2 wherein said core portion (334) is movably mounted on said one of said pair of preform mold bodies (312) for movement in the direction of said axis into said pocket (318, 320) to form said mold cavity for said closure release element, whereby said core portion is retractable out of said pocket.
5.
The apparatus set forth in claim 4 wherein core portion (334) is coupled to an actuator (318) carried by said one preform mold body.
6.
The apparatus set forth in claim 5 wherein said actuator (318) is a pneumatic actuator.
CA2553642A 2004-01-30 2005-01-28 Injection molding Active CA2553642C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/768,331 US7214341B2 (en) 2004-01-30 2004-01-30 Method of injection molding a preform including a radially extending element
US10/768,331 2004-01-30
PCT/US2005/002711 WO2005075175A1 (en) 2004-01-30 2005-01-28 Mold for injection molding undercut article and article

Publications (2)

Publication Number Publication Date
CA2553642A1 true CA2553642A1 (en) 2005-08-18
CA2553642C CA2553642C (en) 2012-09-18

Family

ID=34807850

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2553642A Active CA2553642C (en) 2004-01-30 2005-01-28 Injection molding

Country Status (7)

Country Link
US (2) US7214341B2 (en)
EP (1) EP1713630B1 (en)
CN (1) CN100450744C (en)
BR (1) BRPI0506497B1 (en)
CA (1) CA2553642C (en)
MX (1) MXPA06008395A (en)
WO (1) WO2005075175A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7214341B2 (en) 2004-01-30 2007-05-08 Owens-Illinois Prescription Products Inc. Method of injection molding a preform including a radially extending element
WO2022147609A1 (en) * 2021-01-06 2022-07-14 Husky Injection Molding Systems Ltd. Closure

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Also Published As

Publication number Publication date
CN1914019A (en) 2007-02-14
CN100450744C (en) 2009-01-14
BRPI0506497B1 (en) 2015-11-03
BRPI0506497A (en) 2007-02-13
US20050167889A1 (en) 2005-08-04
US7214341B2 (en) 2007-05-08
EP1713630B1 (en) 2012-10-10
US20070154590A1 (en) 2007-07-05
WO2005075175A1 (en) 2005-08-18
US7455518B2 (en) 2008-11-25
MXPA06008395A (en) 2006-08-25
EP1713630A1 (en) 2006-10-25
CA2553642C (en) 2012-09-18

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