WO2005066034A1 - A plastic container or a preform - Google Patents

A plastic container or a preform Download PDF

Info

Publication number
WO2005066034A1
WO2005066034A1 PCT/US2004/043305 US2004043305W WO2005066034A1 WO 2005066034 A1 WO2005066034 A1 WO 2005066034A1 US 2004043305 W US2004043305 W US 2004043305W WO 2005066034 A1 WO2005066034 A1 WO 2005066034A1
Authority
WO
WIPO (PCT)
Prior art keywords
finish
preform
neck
channel
lip
Prior art date
Application number
PCT/US2004/043305
Other languages
English (en)
French (fr)
Inventor
Thomas E. Nahill
Original Assignee
Graham Packaging Pet Technologies, 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 Graham Packaging Pet Technologies, Inc. filed Critical Graham Packaging Pet Technologies, Inc.
Priority to MXPA06007081A priority Critical patent/MXPA06007081A/es
Priority to EP20040815388 priority patent/EP1706329A1/en
Priority to BRPI0418108-5A priority patent/BRPI0418108A/pt
Priority to CA 2551314 priority patent/CA2551314A1/en
Priority to AU2004312420A priority patent/AU2004312420A1/en
Publication of WO2005066034A1 publication Critical patent/WO2005066034A1/en

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0722—Preforms or parisons characterised by their configuration having variable wall thickness at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0724—Preforms or parisons characterised by their configuration having variable wall thickness at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0731—Preforms or parisons characterised by their configuration having variable diameter at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • B29C2949/0772—Closure retaining means
    • B29C2949/0773—Threads
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • B29C2949/0777—Tamper-evident band retaining ring
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
    • B29C2949/0801—Finish neck ring
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3008—Preforms or parisons made of several components at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3008—Preforms or parisons made of several components at neck portion
    • B29C2949/3009—Preforms or parisons made of several components at neck portion partially
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3012—Preforms or parisons made of several components at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3016—Preforms or parisons made of several components at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/302—Preforms or parisons made of several components at bottom portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • B29C2949/3026—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique having two or more components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2949/00—Indexing scheme relating to blow-moulding
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    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular
    • 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
    • B29K2623/00—Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2623/04—Polymers of ethylene
    • B29K2623/08—Copolymers of ethylene
    • B29K2623/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • 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
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2001/00—Articles provided with screw threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]

Definitions

  • the present invention is directed to finishes for plastic containers or preforms, to preform assemblies for blow molding plastic containers, to plastic containers blow molded from such preform assemblies, and to methods of making such finishes, preform assemblies and containers.
  • BACKGROUND OF THE INVENTION In the manufacture of plastic containers, it is conventional to injection mold or compression mold a container preform having a body and a finish with one or more external threads or other closure attachment means.
  • the preform finish typically is molded to its final geometry, while the body of the preform subsequently is blow molded to the desired geometry of the container body.
  • the preform may be of monolayer construction, or may be of multilayer construction in which one or more intermediate layers in the preform body may or may not extend into the finish area of the preform.
  • U.S. Patent Nos. 4,609,516, 4,710,118 and 4,954,376 illustrate injection molding of multilayer container preforms.
  • Molding the finish portion of the container as part of the preform presents a number of problems.
  • the plastic material typically is injected into a mold cavity at the closed end of the preform body and must first flow in the area along the sides of the preform cavity, to form the relatively thin walled preform body, and then into the area in which the finish is molded, to form the substantially thicker finish portion. Because it is located at the end of the flow path, it can be difficult to completely fill the relatively thicker and more contoured finish portion.
  • the finish typically requires more accurate and stable dimensioning than the body of the preform, which can lengthen the cycle time of the molding process.
  • the finish portion of the preform is of the same material as at least the outer layers of the preform body, this may limit the ability to obtain more desirable performance characteristics in the finish.
  • the finish portion of the preform can be wholly or partially crystallized to improve the operating characteristics of the finish area, particularly in higher temperature container applications (e.g., hot-fill, pasteurization, refill, etc.).
  • the requirement that the finish be of the same material as at least the outer layers of the preform body (in a multilayer preform) may limit the design, manufacture and/or performance characteristics of the preform or container.
  • finish assemblies for preforms and containers in which the preform neck has an external flange around its open end, and a separate plastic finish ring is assembled over the preform neck in abutment with the external flange.
  • the finish ring has one or more external threads or other means for securement of a closure, and can be of a plastic construction different from the plastic construction of the preform.
  • the preform body and neck may be of relatively thin plastic construction, while the finish ring (alone or together with the neck) forms a thickened construction.
  • a method for making a preform assembly.
  • a plastic preform having a body with a closed end, and a neck extending from the body, the neck having an open end and a radially outwardly extending flange surrounding the open end.
  • the flange has an open channel proximal to the outer surface of the neck.
  • a finish ring is provided having an annular body and an outer surface with an attachment portion for securing a closure.
  • An annular lip extends from the body of the finish ring. The finish ring and preform are assembled such that the ring is received over the outer surface of the neck and the annular lip is received in and engages at least a portion of the channel.
  • a finish assembly for a plastic container or preform.
  • the assembly includes a plastic neck having an open end surrounded by an external flange, the flange having an open channel proximal to an outer surface of the neck.
  • the assembly further includes a plastic finish ring having an annular body with an inner surface positioned opposite the outer surface of the neck, and an outer surface having an attachment portion for securing a closure.
  • An annular lip on the finish ring extends into and engages at least a portion of the channel.
  • a preform assembly is provided for blow molding a plastic container.
  • the assembly includes a plastic preform having a body with a closed end which is blow molded to form a container, and a neck extending axially from the body and having an open end with a radially outwardly extending flange.
  • the flange has an annular undercut forming an open channel on an underside of the flange.
  • the assembly further includes a finish ring having an annular body disposed over the neck of the preform, and an outer surface having at least one external thread.
  • An annular lip on the ring extends into and engages at least a portion of the channel.
  • the engaging portions of the lip and channel comprise one or more facing surfaces which enable sealing of the finish ring against the flange.
  • the channel which may be extracted from or molded into the underside of the flange, produces a radially-extending top flange portion and a downwardly projecting outer flange projection or lip.
  • the outer flange lip is generally axially aligned with the channel (and with the preform neck central axis).
  • This lip on the flange has at least one facing surface which matches an opposed facing surface on the annular lip of the finish ring, to seal the ring and flange.
  • the facing surfaces may, for example, form mating conical surfaces.
  • the facing surfaces may extend to the outer surfaces of the finish ring and flange, to thereby retard or prevent the entrance of any fluid between the preform neck and finish ring.
  • the finish ring lip and preform " channel may be in complete abutment, or there may be a gap between at least a portion of the lip and channel so long as another portion seals the lip and channel.
  • the lip and channel may alternatively have stepped facing surfaces.
  • each of the finish ring and preform neck are annular bodies have axially elongated inner and outer annular engaging surfaces, respectively.
  • the finish ring thus forms a collar around the preform neck.
  • the finish ring may be used to provide a substantially thicker finish portion to the neck of the preform or container, compared to a sidewall of the container.
  • the finish ring may be of a different plastic material than the preform or container neck, thus, providing different performance characteristics.
  • the finish ring may be treated (e.g., thermally) either prior to or subsequent to its assembly with the neck, to provide different properties (even if made of the same material as the neck).
  • the finish ring may be slid over the bottom end and onto the neck of the preform, followed by blow molding of the preform body to form a container.
  • FIG. 1 is an elevational view of a preform assembly in accordance with one embodiment of the invention
  • FIG. 2 is an exploded perspective view of the preform assembly illustrated in FIG. 1
  • FIG. 3 is a fragmentary sectional view taken substantially along the line 3-3 in FIG. 1
  • FIG. 3A is a fragmentary sectional view on an enlarged scale of the upper end of the preform neck illustrated in FIG. 3
  • FIG. 3B is a fragmentary sectional view on an enlarged scale of the upper end of the finish ring illustrated in FIG. 3
  • FIGS. 4 and 5 are fragmentary sectional views, similar to that of FIG.
  • FIG. 6 is a perspective view of a preform and finish ring for providing a preform assembly in accordance with another embodiment
  • FIG. 7 an enlarged fragmentary sectional view of the preform neck and finish ring taken substantially along the line 7-7 in FIG. 6
  • FIG. 8 is a fragmentary sectional and partially schematic view of a finish ring and preform neck, similar to the preform assembly shown in FIGS. 6-7, and further illustrating a blow molded container portion made from the body portion of the preform.
  • FIGS. 1-3B illustrate a preform assembly 10 in accordance with one embodiment of the invention.
  • the assembly 10 includes a preform 12 and a finish ring 14 assembled thereto.
  • Preform 12 includes a body 16 with a closed lower end 18 and an integrally formed neck 20 with an external flange 22 extending radially outwardly from the open end of the neck.
  • Neck 20 is generally of cylindrical construction, and flange 22 is circumferentially continuous and substantially perpendicular to the central longitudinal axis of the preform neck 20 (shown by line 3-3 in FIG. 1).
  • An open channel (or undercut) 24 (FIGS.
  • channel 24 has a generally radially outwardly facing surface 26 that preferably is a continuation of the radially outwardly facing surface 28 of preform neck 20, an annular undersurface 30 adjacent (and substantially perpendicular) to surface 26, and an inclined (at less than 90° with respect to the central neck axis) radially inwardly facing surface 32 (see Fig. 3A) extending from the outer edge of channel undersurface 30.
  • the inclined surface 32 is of conical construction with respect to the longitudinal neck axis.
  • Conical surface 32 preferably is at an angle of about 30° to the central axis of the preform neck 20.
  • the annular undersurface 30 of channel 24 preferably lies in a plane substantially perpendicular to the axis of neck 20.
  • the annular undersurface 33 of the outer flange lip 23 preferably lies in a plane substantially perpendicular to the axis of neck 20.
  • Finish ring 14 preferably is of molded plastic construction, and may be of a different or the same plastic material as preform 12. If the same material is used, the molded finish ring may be processed differently than the preform to provide different properties.
  • the finish ring 14 has an elongated annular body 34 with an integrally formed axially extending upper lip 36. Ring body 34 and lip 36 preferably are circumferentially continuous. Lip 36 has an inner surface 38 (FIG. 3B) preferably formed as an extension of the inner surface 40 of ring body 34, both preferably being cylindrical. Lip 36 also has an upper end surface 42, which preferably lies in a plane perpendicular to the longitudinal axis of ring 14 (same as the neck axis), and a radially outwardly facing conical surface 44 that extends from the outer edge of upper surface 42.
  • Conical surface 44 preferably is complementary to conical surface 32 on preform flange lip 23, preferably at an angle of about 30°, so that the two facing surfaces will abut one another in sealing engagement.
  • Ring body 34 also includes at least one external thread, bead or other means 50 for securing a closure to the final container (FIG. 8).
  • ring body 34 also includes an annular bead 52 for engagement by tamper-indicating means on the closure, and a support flange 54 to facilitate subsequent handling of the preform and container.
  • Preform 12 preferably is formed in a compression or injection molding operation.
  • Finish ring 14 which preferably is itself formed in a suitable plastic molding operation, can be slid over the closed end of the preform so that the radially inner surface 40 of finish ring 14 is in close sliding engagement with the radially outer surface 28 of preform neck 20.
  • the above-noted pending applications disclose various techniques for assembling finish ring 14 over neck 20 and securing the finish ring to the neck, such as by interference press fit, alone or enhanced by adhesive and/or ultra-sonic welding.
  • the assembly of finish ring 14 over preform neck 20 continues until lip 36 on finish ring 14 is received within channel 24 on preform neck flange 22 and conical surfaces 44, 32 are brought into abutting facing engagement.
  • FIGS. 4 and 5 illustrate other preform assemblies 60, 62 in accordance with respective modified embodiments of the invention. Reference numerals in FIGS.
  • preform assembly 60 in FIG. 4 and preform assembly 10 in FIGS. 1-3 indicate identical or related components.
  • preform flange 22a and/or finish ring lip 36a is/are dimensioned so that there is abutting engagement for both of lower surfaces 30, 33 (FIG. 3A) on flange 22a and upper surfaces 42, 46 (FIG. 3B), respectively, on finish ring 14a.
  • the channel flange and the finish ring lip are dimensioned to eliminate gap 56 in FIG. 3.
  • FIGS. 6-8 illustrate a further embodiment wherein the assembled preform and neck finish are used to form a blow molded container 64.
  • FIG. 6 illustrates a finish ring 14c, shown separately below, and assembled with a preform 12c in the upper portion of the figure.
  • FIG. 7 is an enlarged fragmentary sectional view of the assembled preform neck 20c and finish ring 14c of FIG. 6.
  • FIG. 8 shows the assembly of FIGS.
  • Preforms may be of any suitable plastic construction, such as monolayer PET or multilayer construction of PET layers alternating with layers of barrier resin such as ethylene vinyl alcohol (EVOH) or nylon.
  • Preforms may be injection molded or compression molded.
  • finish rings may be of injection or compression molded plastic construction. By providing finish rings separate from preforms, the finish rings may be of any desired material construction, either the same as or more preferably different from the material construction of the preform.
  • the finish ring can be of PET, post consumer resin (PCR), process regrind (REG), polypropylene (PP), polyethylene (PE) or polyethylene naphthalate (PEN) construction.
  • the finish ring is of polyester construction (e.g., PET, PEN or process regrind)
  • the finish ring may be wholly or partially crystallized as molded. This may be accomplished by employing fast-crystallizing materials, or suitably setting process conditions for manufacture of the finish ring, such as high mold temperature, slow mold cooling, heated areas in the mold cavity, etc.
  • the finish ring alternatively may be wholly or partially crystallized in a post-molding operation.
  • the material and conditions of fabrication of the finish ring may be selected separately from the material and manufacturing conditions of the preform to achieve desired operating characteristics at the finish area of the preform and the final container.
  • the preform can be molded with thin wall sections without having to accommodate flow of material into a thicker finish area, which reduces material cost and mold cycle time.
  • the finish ring is secured to the neck of the preform by interference fit (e.g., press fit or shrink fit), adhesive or welding.
  • the finish ring and/or the preform neck can be provided with suitable means for preventing rotation of the ring on the neck.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Ceramic Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
PCT/US2004/043305 2003-12-24 2004-12-23 A plastic container or a preform WO2005066034A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
MXPA06007081A MXPA06007081A (es) 2003-12-24 2004-12-23 Recipiente o preforma de plastico.
EP20040815388 EP1706329A1 (en) 2003-12-24 2004-12-23 A plastic container or a preform
BRPI0418108-5A BRPI0418108A (pt) 2003-12-24 2004-12-23 recipiente ou pré-forma de plástico
CA 2551314 CA2551314A1 (en) 2003-12-24 2004-12-23 A plastic container or a preform
AU2004312420A AU2004312420A1 (en) 2003-12-24 2004-12-23 A plastic container or a preform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/746,408 US20050142311A1 (en) 2003-12-24 2003-12-24 Finish assembly for a plastic container or preform
US10/746,408 2003-12-24

Publications (1)

Publication Number Publication Date
WO2005066034A1 true WO2005066034A1 (en) 2005-07-21

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PCT/US2004/043305 WO2005066034A1 (en) 2003-12-24 2004-12-23 A plastic container or a preform

Country Status (8)

Country Link
US (1) US20050142311A1 (zh)
EP (1) EP1706329A1 (zh)
CN (1) CN1898134A (zh)
AU (1) AU2004312420A1 (zh)
BR (1) BRPI0418108A (zh)
CA (1) CA2551314A1 (zh)
MX (1) MXPA06007081A (zh)
WO (1) WO2005066034A1 (zh)

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JP7182233B1 (ja) 2022-07-08 2022-12-02 株式会社フロンティア タグ付き容器およびタグ付きプリフォーム

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CN104379458B (zh) * 2012-04-23 2016-04-20 东洋制罐集团控股株式会社 发泡拉伸塑料瓶
FR3030341B1 (fr) * 2014-12-17 2017-06-23 Sidel Participations Recipient a large col a manchon filete rapporte
MX2022010277A (es) * 2020-02-21 2022-09-19 Liquiform Group Llc Acabado de una preforma y un recipiente formado a partir de la preforma.
WO2021195859A1 (zh) * 2020-03-30 2021-10-07 惠州市东为健康科技有限公司 一种抚触运动装置

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GB2523202B (en) * 2014-02-18 2017-09-06 Petainer Large Container Ip Ltd Plastic Aerosol Container
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JP2024008709A (ja) * 2022-07-08 2024-01-19 株式会社フロンティア タグ付き容器およびタグ付きプリフォーム

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AU2004312420A1 (en) 2005-07-21
MXPA06007081A (es) 2006-09-04
US20050142311A1 (en) 2005-06-30
CA2551314A1 (en) 2005-07-21
CN1898134A (zh) 2007-01-17
BRPI0418108A (pt) 2007-04-17
EP1706329A1 (en) 2006-10-04

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