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WO2008150823A1 - Finition et fermeture pour un contenant pouvant être pasteurisé en plastique - Google Patents

Finition et fermeture pour un contenant pouvant être pasteurisé en plastique Download PDF

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Publication number
WO2008150823A1
WO2008150823A1 PCT/US2008/065017 US2008065017W WO2008150823A1 WO 2008150823 A1 WO2008150823 A1 WO 2008150823A1 US 2008065017 W US2008065017 W US 2008065017W WO 2008150823 A1 WO2008150823 A1 WO 2008150823A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
closure
container
finish
package
Prior art date
Application number
PCT/US2008/065017
Other languages
English (en)
Inventor
David Piccioli
Amit Agrawal
Wayne N. Collette
Original Assignee
Graham Packaging Company, Lp
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 Company, Lp filed Critical Graham Packaging Company, Lp
Priority to MX2009012681A priority Critical patent/MX2009012681A/es
Priority to EP08756398A priority patent/EP2155573A1/fr
Priority to BRPI0812025-0A2A priority patent/BRPI0812025A2/pt
Priority to AU2008260196A priority patent/AU2008260196A1/en
Publication of WO2008150823A1 publication Critical patent/WO2008150823A1/fr

Links

Classifications

    • 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—Rigid or semi-rigid 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 or 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
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2619—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic built in the vehicle body
    • B60Q1/2623—Details of the fastening means
    • B60Q1/2626—Screw-nut fasteners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2619—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic built in the vehicle body
    • B60Q1/2653—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic built in the vehicle body with arrangement for sealing the device with respect to the vehicle body, or for concealing gaps between the device and the vehicle body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B60R19/50—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with lights or registration plates
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • 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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/786—Temperature
    • B29C2049/7861—Temperature of the preform
    • B29C2049/7862—Temperature of the preform characterised by temperature values or ranges
    • 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
    • B29C2949/076—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
    • B29C2949/0774—Interrupted 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
    • B29C2949/081—Specified dimensions, e.g. values or ranges
    • B29C2949/0829—Height, length
    • B29C2949/0832—Height, length of the 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
    • B29C2949/081—Specified dimensions, e.g. values or ranges
    • B29C2949/0839—Angle
    • B29C2949/0842—Angle of the 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
    • B29C2949/20—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
    • B29C2949/3012—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
    • 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
    • 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
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate 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
    • B29K2023/04—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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/08—PVDC, i.e. polyvinylidene chloride
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1886—Bumper fascias and fastening means therefor
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the present invention relates to plastic container finish and closure systems that are subjected to pasteurization processes.
  • plastic containers e.g., containers comprising polyethylene terephthalate (PET) for products requiring pasteurization. Because a container experiences a range of temperatures during pasteurization, these conditions can cause a plastic container to undergo permanent, uncontrolled deformation. Accordingly, there remains a need to provide plastic containers that can withstand pasteurization with a minimum of deformation.
  • PET polyethylene terephthalate
  • a plastic closure for supporting an amorphous neck finish of a pasteurizable plastic container against deformation.
  • This closure can be used to minimize the finish distortions which normally occur at the high temperatures and pressures involved in the pasteurization process, and as a result, prevent any significant loss of pressure and/or product leakage.
  • the closure can be provided with a liner to enhance seal integrity.
  • the one or more threads on the container neck finish can be modified to increase the surface contact between the container thread and closure thread, for example, by providing complementary planar thread profiles on the container and closure threads, which provide surface contact and support features.
  • the container thread may be thickened to further prevent deformation. For example, an increased depth of the container thread, or contact at a region that takes advantage of the greater thread thickness closer to the neck finish wall can be used to withstand the conditions of pasteurization without loss of seal integrity.
  • a nonvented closure thread is provided so as to prevent nonuniform deformation of the container thread during pasteurization.
  • a plastic closure for supporting an amorphous neck finish of a pasteurizable plastic container against deformation comprising: a top wall; a depending annular skirt extending from the top wall; and a rigid finish support ring extending from the top wall, the finish support ring having an outer diameter sized to support an inner diameter of the amorphous container neck finish against inward deformation during pasteurization.
  • Another embodiment provides a plastic closure for supporting an amorphous neck finish of a pasteurizable plastic container against deformation, comprising: a shell comprising a top wall and a depending annular skirt extending from the top wall; a liner covering at least a portion of the underside of the top wall; and a rigid finish support ring extending from the liner, the finish support ring having an outer diameter sized to support an inner diameter of the amorphous container neck finish against inward deformation during pasteurization.
  • Another embodiment provides a pasteurizable package comprising: a pasteurizable plastic container having an amorphous neck finish; and a plastic closure comprising a depending annular skirt extending from a top wall and a rigid finish support ring extending from the top wall, the finish support ring having an outer diameter sized to support an inner diameter of the neck finish against inward deformation during pasteurization.
  • a pasteurizable package comprising: a plastic pasteurizable container comprising an amorphous neck finish having a vented thread; and a plastic closure comprising a top wall and a depending annular skirt, an inner wall of the skirt having a nonvented thread that engages the vented thread of the neck finish, wherein the nonvented closure thread has a planar surface that contacts a planar surface of the vented container thread to provide substantially planar surface contact between the closure thread and the container thread and to support the container thread against deformation during pasteurization.
  • a pasteurizable package comprising: a plastic pasteurizable container comprising an amorphous neck finish having a thread; and a plastic closure comprising a top wall and a depending annular skirt, an inner wall of the skirt having a thread that engages the thread of the neck finish, wherein the container thread contacts the closure thread at a distance of at least 50% of the radial depth of the thread, as measured from the tip of the thread to a wall of the neck finish, to support the container thread against deformation during pasteurization.
  • FIG. 1 is a schematic view of a pasteurization tunnel
  • FIG. 2A is a sectional view of a finish capped with a closure prior to heating
  • FIG. 2B is a sectional view of the capped finish of FIG. 2A that has been heated to pasteurization temperatures
  • FIG. 2C is a sectional view of the capped finish of FIG. 2B that has been subsequently cooled;
  • FIG. 3 is a sectional view of a container capped with a closure having a finish support ring
  • FIG. 4 is a sectional view of a container capped with a closure having a liner with a finish support ring;
  • FIG. 5 is a sectional view of a container capped with a closure having a finish support ring and additional oxygen barrier and/or oxygen scavenging inner liner;
  • FIG. 6 is a sectional view of a container capped with a closure having a finish support ring and additional oxygen barrier and/or oxygen scavenging outer liner;
  • FIG. 7 shows a container neck finish with deformed threads
  • FIG. 8A is a detailed sectional view of a bottle thread having point contact with a closure thread
  • FIG. 8B is a detailed sectional view of bottle and closure threads having surface contact
  • FIG. 8C is a detailed sectional view of a finish thread modified to have an additional thickness
  • FIG. 8D is a detailed sectional view of a finish thread contacting a bottle thread at the midpoint region of the finish thread
  • FIG. 8E is a detailed sectional view of a finish thread contacting a bottle thread at a region of the finish thread closer to the finish wall;
  • FIG. 9 schematically depicts a device for applying a predetermined amount of force to a neck finish.
  • FIG. 1 schematically shows a system 1 that includes apparatus and processes for the manufacture, filling and pasteurization of a filled plastic container 8 in a pasteurization tunnel 2.
  • System 1 includes a conveyer belt 3 for conveying the containers through stations for filling, capping, and pasteurization processes.
  • a central longitudinal axis A of the container 8 is shown in FIG. 1 and serves throughout this specification as a reference point of orientation (e.g., radially outward from axis A).
  • container 8 is manufactured in blow mold 6 and downstream from blow mold 6 (in the direction indicated by the arrows) container 8 is carried by conveyer belt 3 to zone 10 for filling with the contents to be pasteurized, to zone 12 for sealing with a closure 9, and finally to the pasteurization tunnel 2 through tunnel entrance 4.
  • various heating and cooling zones progressively raise and subsequently lower the temperature of the filled and sealed container. These heating/cooling zones comprise a series of showers each having a predetermined temperature.
  • container 8 is first wetted by a first set of showers in zone 14 to gradually increase the temperature of container 8 and its contents.
  • FIG. 1 schematically shows only one set of showers in each of zones 14, 16, and 18, although the number can vary to two or more depending on the desired rate of temperature change, and/or length of time to maintain the bottle at a desired temperature.
  • shower(s) in zone 16 maintain bottle 8 at a pasteurization temperature, e.g., 140°F for beer.
  • the container 8 is then conveyed to zone 18 where shower(s) cool the bottle 8 down to ambient temperature.
  • a precooling liquid in zone 18 may be at a temperature of 125°F, optionally followed by successive cooling sprays at for example 75°F and 60 0 F.
  • Bottle 8 emerges from the pasteurization tunnel 2 through exit 5 at a desired temperature with the pasteurized product ready for labeling and distribution.
  • the conveyer belt can have the design of U.S. Patent No. 2,658,608, the disclosure of which is incorporated herein by reference.
  • the method of conveyance can involve a walking beam as described in U.S. Patent No. 4,441 ,406, the disclosure of which is incorporated herein by reference.
  • blow molding, filling, capping and/or conveying processes do not necessarily occur in or with the same apparatus as that used for pasteurization and can be performed with a different apparatus.
  • Tunnel 2 of FIG. 1 illustrates one embodiment of a pasteurization system.
  • different forms of apparatus may be employed to carry out the pasteurization process, and the various parameters of the process (e.g., time and temperatures of the liquid sprayed on the containers) may be varied in accordance with the nature of the product to be treated and the results desired.
  • FIG. 1 depicts three heating and cooling zones, although any number of spray systems can be used as known in the art, e.g., more zones can be used and each zone can comprise one or more showers using any number of designs known in the art.
  • FIG. 2A shows a sectional view of a neck finish 30 capped with closure 40 prior to pasteurization.
  • Closure 40 comprises top wall 42 and a depending skirt 44 extending from the perimeter of wall 42. Threads 46 line the inner diameter of skirt 44, and engage complementary outer threads 36 of neck finish 30.
  • Closure 40 may optionally have a liner 48 that covers the underside of top wall 42 to provide an additional seal.
  • the liquid product and head space gases expand within the sealed container.
  • the pressure can increase from, e.g., 15 psi while cold (if the container is cold-filled with beer at e.g. 35°F) to approximately 45 psi at ambient temperature (75°F), and can peak at approximately 85 psi at a pasteurization temperature of 140 0 F.
  • Other products may experience different pressure changes.
  • the gas expansion can cause top wall 42 of closure 40 to dome upward in the direction of arrow 31 , as shown in FIG. 2B.
  • Neck finish deformations can affect the integrity of the product (e.g., loss of carbonation pressure, exposure to oxygen, leakage of product).
  • the seal between the neck finish and closure can be compromised by the doming, as the contact between the neck and liner and/or the neck and closure engagement threads can be reduced due to the deformed neck.
  • one embodiment provides a plastic closure for engaging a neck finish of a container.
  • the plastic closure is capable of supporting an inner diameter of the container neck to substantially prevent permanent inward deformation of the neck caused by the pasteurization process.
  • FIG. 3 shows one embodiment of a closure of the present invention.
  • a neck finish 30 is capped by a closure 50 having a top wall 52 and an annular skirt 54 extending from the perimeter of top wall 52.
  • An inner diameter of skirt 54 has inner threads 56 that engage complementary outer threads 36 of neck finish 30.
  • a rigid integral finish support ring 53 also extends from top wall 52, where the finish support ring 53 has an outer diameter 55 less than the inner diameter of the annular skirt 54.
  • the outer diameter 55 of finish support ring 53 has a dimension that allows the finish support ring 53 to engage and thus support an inner diameter 33 of the container neck finish 30 against inward deformation, e.g., of the type illustrated in FIGs.
  • the outer diameter 55 is thus substantially equal to (may be slightly less than) the inner diameter 33 of neck finish 30.
  • finish support ring 53 sealingly engages inner diameter 33 of neck finish 30.
  • finish support ring 53 has sufficient rigidity, based on material, and dimensions, e.g., to support inner diameter 33, and thus the neck finish 30, to substantially prevent inward deformation.
  • the dimensions of the finish support ring are determined based on at least one of the finish support ring thickness and length, e.g., the length the finish support ring extends into finish, where the length of the finish support ring can be measured from the underside 58 of top wall 52 of the closure 50 to the bottom end of the finish support ring 53 (see FIG. 3).
  • the bottle can comprise a polyester, such as polyethylene terephthalate, either as a single layer or multi-layer incorporating other resins, such as polyamides, polyolefins, polyvinylidene chloride (PVDC) and ethylene vinyl alcohol (EVOH).
  • the closure can be made of polyolefins, such as polyethylene (high or low density), polypropylene, or copolymers thereof.
  • the closure can be a compression- molded polypropylene cap able to withstand the pasteurization process without deformation.
  • FIG. 3 depicts finish support ring 53 as an integral portion of closure 50.
  • a solid plug (extending across the full inner diameter of the neck finish) can be provided in place of finish support ring 53, the plug having the same outer diameter as finish support ring 53.
  • Other designs can be envisioned by one of ordinary skill in the art to support inner diameter 33 of the neck finish 30.
  • FIG. 4 shows another embodiment of a closure of the present invention where the finish support ring is not integral with the closure.
  • Closure 70 comprises top wall 72 and depending skirt 74.
  • Closure 70 has threads 76 around an inner diameter of skirt 74 to engage complementary threads 36 of neck finish 30.
  • a plastic liner 71 in FIG. 4 covers the underside of top wall 72.
  • a rigid finish support ring 73 extends from liner 71 where the outer diameter 75 of finish support ring 73 is substantially equal to (may be slightly less than) the inner diameter 33 of neck finish 30.
  • finish support ring 73 of FIG. 4 has suitable dimensions and rigidity to support inner diameter 33 of neck finish 30 from inward deformation during pasteurization.
  • the liner may cover the entire underside of top wall 72, as shown in FIG. 4, or alternatively, cover only the portion of wall 72 that contacts rim 35 of neck finish 30.
  • the liner can be made of the same materials as the closure, e.g. a rigid plastic such as a polyolefin, or can be made from a material different from that of the closure.
  • the closure of the invention can include a liner made from a gas barrier material, e.g., an oxygen barrier material, including one or both of passive and active barrier materials.
  • FIG. 5 shows the closure of FIG. 3 containing in addition a liner 51 covering the underside of the top wall 52 over the area defined by the inner wall of finish support ring 53.
  • active barrier materials include oxygen scavenging materials, such as those disclosed in U.S. Pat. Pub. No. 2004/0043172.
  • Exemplary passive barrier materials include those chosen from elastomers, plastisol, polyolefins, ethylene vinyl acetate (EVA), ethylene vinyl alcohol (EVOH), polyvinyl alcohol (PVOH), polyvinyldene chloride (PVDC), polyethylene naphthalate (PEN), polyacrylonitrile (PAN), styrene acrylonitrile (SAN), liquid crystal polymer (LCP).
  • EVA ethylene vinyl acetate
  • EVOH ethylene vinyl alcohol
  • PVDC polyvinyldene chloride
  • PEN polyethylene naphthalate
  • PAN polyacrylonitrile
  • SAN styrene acrylonitrile
  • LCP liquid crystal polymer
  • FIG. 6 shows the closure 50 of FIG. 3 further comprising an outer annular liner 57 comprising an active oxygen scavenging material or a passive oxygen barrier material, such as those disclosed herein.
  • Annular liner 57 extends outwardly from the outer diameter 55 of finish support ring 53 to the inner diameter of skirt 54 to provide a seal against rim 35 of neck finish.
  • annular liner 57 can extend over only a portion of closure 50 that would contact rim 35 of neck finish 30.
  • Liners 51 and/or 57 of FIGs. 5 and 6, respectively, can also be incorporated in the closure 70 of FIG. 4. Liners 51 and/or 57 can cover the underside of liner 71 in the same manner that it would cover the underside of top wall 52 of closure 50 (FIG. 3).
  • the deformations from pasteurization can also affect the integrity of the finish threads 36.
  • the threads of the closure are vented, e.g., segmented (not continuous) in a manner to allow a pathway to relieve excess pressure
  • the doming of the closure and accompanying inward deformation of the neck finish during heating as shown in FIG. 2B 1 can cause the neck finish threads and segmented closure threads to push against each other.
  • FIG. 7 shows a perspective view of a neck finish 80 having continuous finish threads 82 after the neck finish was subjected to pasteurization utilizing a closure with segmented closure threads.
  • the resulting finish threads 82 have intermittent bends or deformations 84 from pressure contact with the segmented closure threads.
  • the ratchet-type deformation of the neck finish threads makes removal of the closure more difficult and may otherwise be undesirable (e.g., produce a clicking sound) from a customer (user) perspective. Also, as the threads are displaced upwards, the seal in contact with the bottle becomes compromised.
  • one embodiment provides a closure having nonvented (continuous, non-segmented) threads that engage complementary threads of the neck finish. If finish thread deformation occurs due to contact between the closure and neck finish threads, the continuous closure threads will cause a more even deformation of the neck finish threads and thus substantially eliminate the formation of segmented bends or ratchet-type deformations of the neck finish threads.
  • the threads of the neck finish and closure are vented.
  • Vented finish threads may be desirable for use with pressurized products such as carbonated beverages (e.g., water, soda, and beer).
  • FIG. 8A shows a sectional view of a point-type engagement 96 between a lower surface of thread 91 of a container neck finish 90, and an upper surface of a thread 101 of a closure 100.
  • Container thread 91 is vented and has a mostly curved sectional profile, except for two converging surfaces 92 (upper) and 93 (lower), which are substantially planar (as indicated by the dotted lines), the cross- section of which are shown as straight line portions.
  • the lower converging surface 93 of container thread 91 is sloped generally upward when moving away from the container.
  • the two surfaces 92 and 93 converge at a radially outward tip of thread 91 at curved portion 95.
  • the corresponding closure thread 101 (see FIG. 8A) is typically nonvented, has a rounded surface 102 at its radially inward tip, and a substantially planar upper surface 103 (lower surface not shown).
  • the closure thread profile typically does not match the profile of the neck finish thread at the region of contact.
  • the surface 102 of closure thread 101 contacts neck finish thread 91 at lower surface 93 at the underside of the finish thread 91 , resulting in a point contact at point 96 (in the cross-section) between threads 91 and 101.
  • this point contact results from the differing slopes of the substantially planar contacting thread surfaces 93 and 103.
  • any deformation of either surface 93 or 103 that eliminates the point contact 96 would compromise the seal between threads 91 and 101.
  • a surface area contact is provided between the neck finish and closure threads.
  • the closure and/or neck finish threads to more closely approximate the profiles of the contacting surfaces.
  • a lower surface of finish thread 91 of neck finish 90 contacts an upper surface of thread 111 of closure 110.
  • Thread 111 has a profile similar to that of thread 101 of FIG. 8A, except that the slope of upper planar surface 113 is changed to substantially match the slope of contacting surface 93 of finish thread 91.
  • the matching slopes allow surface contact between closure thread upper surface 113 and neck finish thread lower surface 93, which enhances the seal between closure thread 111 and neck finish thread 91.
  • a plane of the nonvented threads of the closure skirt contact a plane of the vented threads of the neck finish to achieve the surface contact.
  • the surface 93 of neck finish thread 91 in FIG. 8B and the complementary surface 113 of closure thread 110 need not necessarily have flat profiles to achieve surface contact. These complementary surfaces can engage via matching curved planes, so long as more than point contact (e.g., surface contact) is achieved.
  • the contacting surfaces of the neck finish thread and of the closure thread are both substantially flat, having an angle with the horizontal of 10° or less. If the matching flat surfaces approach the horizontal, the container thread can penetrate (extend radially into) the closure threads to a greater extent and achieve even greater surface contact. In another embodiment, the matching flat surfaces of the container and closure threads have an angle with the horizontal of 5° or less. In yet another embodiment, the matching flat surfaces of the container and closure threads have an angle with the horizontal of 0°.
  • FIG. 8C shows a modification of a neck finish thread 91 (e.g., the thread 91 of FIG. 8A) by providing an additional thickness 99 on upper surface 92.
  • This additional thickness 99 (in the direction of the longitudinal container axis A) strengthens neck finish thread 91 sufficiently that it is better able to resist deformation.
  • This embodiment allows the use of a conventional closure and neck finish, where only the neck finish is modified with an additional thickness 99.
  • at least 10% is added to the finish thread thickness; in another embodiment at least 20%, and in a further embodiment at least 30%.
  • the ability to withstand deformation by the neck finish threads can be increased by allowing the contact between the neck and closure threads to occur at a distance closer to the neck finish wall.
  • FIG. 8A again is used to show a typical contact point 96 between neck finish thread 91 and closure thread 101.
  • the neck finish thread has a radial depth D (measured from finish wall 97 to curved tip 95) and has a midpoint M.
  • the point contact 96 occurs beyond the midpoint M and near the tip 95.
  • the neck finish thread 91 has a lower surface 93 that contacts the upper surface 123 of closure thread 121 (of closure 120) at contact point 96.
  • providing a contact point radially closer to the finish wall enhances the structural stability of the thread because the "bending moment" of the (closure thread) force is reduced.
  • Bending moment is commonly used in solid mechanics to evaluate stresses associated with cantilever beams.
  • the finish thread can be viewed as a cantilever element with the finish wall being the fixed end and the outer edge being the "free" end.
  • the bending moment imposed on the (finish) thread at the wall of the finish (fixed end) is proportional to the distance between the point of contact (point at which the force is acting) and the wall (fixed end). As the point of contact moves closer to the wall (fixed end), this distance is reduced thereby reducing the bending moment and in turn reducing the tendency to bend. Reduction of the bending moment applies whether or not the thread thickens or remains the same when moving from the outer edge of the thread toward the finish wall.
  • the contact point 96 occurs at the midpoint distance, i.e., at 0.028 inch, or 50% of the depth of the thread. Still further, FIG. 8E shows an even more ideal situation where the contact point 96 occurs at a distance of 0.037 inch from the tip 95, or 65% the depth of the thread. Accordingly, in one embodiment, the contact point occurs at a distance of at least 50% of the radial depth of the thread as measured from the tip of the thread to the finish wall, e.g., at least 65%, alternatively at least 75%, or even at least 85% of the depth of the thread as measured from the tip of the thread.
  • the angle of the surface of the underside of the finish thread (e.g., the surface 93 of finish thread 91 in FIG. 8A) with the horizontal may be reduced to increase the stability of the thread.
  • the advantage of a flatter thread may arise from the fact that the angle at which the (closure) force acts on the finish thread becomes more vertical. By itself the flatter thread does not change the bending moment. However the vertical nature of the force due to flatness may allow a more radially inward point of engagement between the contacting neck and closure threads. It can also reduce the tendency of the closure thread to "slide" (or strip) out of engagement.
  • the angle of the underside of the thread finish with the horizontal is 20°. In one embodiment of the invention, this angle is less than 10°, or less than 5°. In another embodiment, this angle is 0°.
  • deformation of the thread finish can be prevented by using one or more of the techniques disclosed herein.
  • the engagement between the finish and closure threads can have surface contact that occurs at a region radially closer to the finish wall to take advantage of the greater thread thickness.
  • the matching surfaces are flat.
  • an extremity of the surface contact occurs at a distance of at least 50% the depth of the thread as measured from the tip of the thread to the finish wall. For example, in FIG.
  • an extremity of the surface contact occurs at a region between the finish wall and the midpoint of the finish thread depth and thus, occurs at a distance greater than 50% of the depth of the thread as measured from the tip of the thread to the finish wall.
  • the location of the other extremity is generally not as relevant and can occur at a distance less than 50% the depth of the thread.
  • an extremity of the surface contact occurs at a distance of at least 65%, at least 75%, or at least 85% the depth of the thread as measured from the tip of the thread to the finish wall.
  • the dimensions of an exemplary finish and closure system able to withstand pasteurization forces can, in one embodiment, be determined by trial runs with closures of varying dimensions and determining whether a test bottle containing fluid can withstand typical pasteurization conditions.
  • the force experienced by a bottle can be simulated with a test apparatus or system 150, a cross- section of which is schematically depicted in FIG. 9.
  • System 150 includes an oven 152 enclosing a test fixture 154 for applying a force in the direction of the arrow 156.
  • a test finish 158 is supported on surface 160.
  • Inner conical surface 162 of fixture 154 surrounds and contacts the annular top surface 159 of finish 158.
  • FIG. 9 depicts the angle 164 from the vertical to be 45°, although angle 164 may be different depending on the dimensions of the neck finish and/or closure.
  • Advancing of the fixture 154 vertically downward in the direction of arrow 156 is achieved with an air piston.
  • Application of a desired force to the top surface 159 of finish 158 may cause finish 158 to bow inward, e.g., in the manner depicted in FIGs. 2B and 2C.
  • the force is calculated form the product of the area of the piston multiplied by the pressure of the air.
  • the outer perimeter of the top surface 159 of the finish 158 experiences a force ranging from 63 lbs (pounds) to 86 lbs applied at an angle 164 of 45° to the vertical plane.
  • the corresponding horizontal component of these forces translates to approximately 44.5 lbs to 60.8 lbs respectively.
  • these forces can reduce the diameter of the top surface of the finish by approximately 0.007 inch to 0.012 inch.
  • the finish will have a frustocone shape. This range or movement can cause the seal to fail, causing leakage.
  • a closure having a rigid integral finish support ring of a thickness of approximately 0.040 inch (e.g., finish support ring 53 of FIG. 3) and a diameter of 0.844 inch can resist the range of forces described above.
  • the rigid external finish support ring extends to a vertical distance of approximately 0.100 inch into the bottle finish (from the top wall of the closure).
  • the support ring may yield a small amount when entering the neck of the finish (to achieve a tight fit with the finish neck), the support ring remains sufficiently rigid to prevent the diameter of the top surface of the finish from reducing (moving in) by no more than 0.001 inch.
  • the support ring is sufficiently rigid to maintain the original diameter of the top surface of the finish even after pasteurization, i.e., there is no reduction in diameter.
  • a thread includes at least one thread or thread segment. It is known to utilize a plurality of thread segments, instead of a continuous thread, for one or more of a closure thread and container thread.
  • a vented thread means a thread having interruptions, typically vertical cuts or gaps, which allow gas to escape when a user opens the bottle (removes the closure).
  • a “nonvented thread” does not include such vents.
  • a polyester material includes one or more polyester homopolymers, copolymers, and blends thereof.
  • the material can include a variety of additives, as typically used in the container industry. These additives may be polymer or nonpolymer additives, and added for various purposes such as processibility, intrinsic viscosity, gas barrier, etc.
  • a polyolefin material or any other “material” is not limited to a single polyolefin or a pure polyolefin.
  • a polyester material would comprise at least 85% by weight of one or more polyesters, more e.g., at least 90%, or even at least 95%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention concerne des contenants en plastique (8) soumis à des processus de pasteurisation avec une fermeture (50) ayant une bague de support de finition annulaire qui soutient une surface interne de la finition (30) du col du contenant pour l'empêcher de se déformer vers l'intérieur pendant la pasteurisation. La bague de support de finition (53) peut être solidaire de la fermeture (50) ou peut prolonger un revêtement de la fermeture. Des fermetures pour des produits qui requièrent une pasteurisation, ainsi que des filets de finition modifiés pour fournir un contact de surface entre la finition et les filets de fermeture sont également proposés.
PCT/US2008/065017 2007-05-31 2008-05-29 Finition et fermeture pour un contenant pouvant être pasteurisé en plastique WO2008150823A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MX2009012681A MX2009012681A (es) 2007-05-31 2008-05-29 Acabado y cierre para recipiente de plastico pasteurizable.
EP08756398A EP2155573A1 (fr) 2007-05-31 2008-05-29 Finition et fermeture pour un contenant pouvant etre pasteurise en plastique
BRPI0812025-0A2A BRPI0812025A2 (pt) 2007-05-31 2008-05-29 Acabamento e fechamento para recipiente plástico pasteurizável.
AU2008260196A AU2008260196A1 (en) 2007-05-31 2008-05-29 Finish and closure for plastic pasteurizable container

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/756,186 2007-05-31
US11/756,186 US20090008360A1 (en) 2007-05-31 2007-05-31 Finish and closure for plastic pasteurizable container

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WO2008150823A1 true WO2008150823A1 (fr) 2008-12-11

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PCT/US2008/065017 WO2008150823A1 (fr) 2007-05-31 2008-05-29 Finition et fermeture pour un contenant pouvant être pasteurisé en plastique
PCT/US2008/065023 WO2008148124A2 (fr) 2007-05-28 2008-05-29 Finition et fermeture pour contenant pouvant être pasteurisé en plastique

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AU (1) AU2008260196A1 (fr)
BR (1) BRPI0812025A2 (fr)
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BRPI0812025A2 (pt) 2014-11-18
WO2008148124A3 (fr) 2009-03-05
MX2009012681A (es) 2009-12-14
WO2008148124A2 (fr) 2008-12-04
AU2008260196A1 (en) 2008-12-11
EP2155573A1 (fr) 2010-02-24
US20090008360A1 (en) 2009-01-08

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