WO2005063463A1 - Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes - Google Patents

Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes Download PDF

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Publication number
WO2005063463A1
WO2005063463A1 PCT/US2004/043303 US2004043303W WO2005063463A1 WO 2005063463 A1 WO2005063463 A1 WO 2005063463A1 US 2004043303 W US2004043303 W US 2004043303W WO 2005063463 A1 WO2005063463 A1 WO 2005063463A1
Authority
WO
WIPO (PCT)
Prior art keywords
neck
preform
container
thread
molded
Prior art date
Application number
PCT/US2004/043303
Other languages
English (en)
Inventor
W. Bruce Larsen
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 BRPI0418199-9A priority Critical patent/BRPI0418199A/pt
Priority to AU2004308960A priority patent/AU2004308960A1/en
Priority to EP20040815386 priority patent/EP1708866A1/fr
Priority to CA 2550668 priority patent/CA2550668A1/fr
Publication of WO2005063463A1 publication Critical patent/WO2005063463A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • 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
    • 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
    • B29C49/76—Neck calibration
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2021—Inserts characterised by the material or type
    • B29C2049/2026—Neck portions
    • 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
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2021—Inserts characterised by the material or type
    • B29C2049/2043—Inserts characterised by the material or type comprising threads, e.g. screws or nuts
    • 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
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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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    • B29C2949/07—Preforms or parisons characterised by their configuration
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    • 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
    • B29C2949/0772—Closure retaining means
    • B29C2949/0773—Threads
    • B29C2949/0775—Inner 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
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    • 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
    • B29C2949/0776—Closure retaining means not containing 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
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    • 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
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    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
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    • 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
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    • B29C2949/07—Preforms or parisons characterised by their configuration
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    • B29C2949/0801—Finish neck ring
    • 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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    • 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
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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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    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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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    • 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
    • B29C2949/3056—Preforms or parisons made of several components having components being compression moulded
    • 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
    • B29C2949/3056—Preforms or parisons made of several components having components being compression moulded
    • B29C2949/3058—Preforms or parisons made of several components having components being compression moulded having two or more components being compression moulded
    • B29C2949/306—Preforms or parisons made of several components having components being compression moulded having two or more components being compression moulded having three or more components being compression moulded
    • 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
    • B29C2949/3056—Preforms or parisons made of several components having components being compression moulded
    • B29C2949/3058—Preforms or parisons made of several components having components being compression moulded having two or more components being compression moulded
    • B29C2949/306—Preforms or parisons made of several components having components being compression moulded having two or more components being compression moulded having three or more components being compression moulded
    • B29C2949/3062—Preforms or parisons made of several components having components being compression moulded having two or more components being compression moulded having three or more components being compression moulded having more than three components being compression moulded
    • 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
    • B29C49/02—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
    • 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
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B29C49/6445—Thermal conditioning of preforms characterised by temperature differential through the preform length
    • B29C49/6452—Thermal conditioning of preforms characterised by temperature differential through the preform length by heating 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
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6604—Thermal conditioning of the blown article
    • B29C49/6605—Heating the article, e.g. for hot fill
    • 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
    • B29C49/76—Neck calibration
    • B29C49/761—Forming threads, e.g. shaping neck thread between blowing means and mould
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • 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
    • 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
    • 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
    • B29K2995/0041—Crystalline
    • 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
    • B29K2995/0041—Crystalline
    • B29K2995/0043—Crystalline non-uniform
    • 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

Definitions

  • SWAGE-FORMING OF CONTAINER OR PREFORM INTERNAL THREADS The present application is directed to plastic containers, and preforms for blow molding plastic containers, and to a method of forming internal threads on the preform or container.
  • a method is provided of forming at least one internal thread in a plastic neck of a preform or container.
  • the method includes the steps of: a) engaging the inner surface of the neck with a first tool having a peripheral channel; b) engaging an outer surface of the neck with a second tool having a peripheral bead; and c) causing relative rotation between the neck and tools to swage at least one internal thread in the neck between the channel and bead.
  • the step of causing relative rotation may include:
  • the method may be performed on a perform, and a body of the preform may subsequently be blow molded to form a container.
  • the method may be performed on the neck of a container, such as a blow molded container formed from the preform.
  • the preform may be formed by injection molding or compression molding.
  • the preform may be molded with an external thread on the neck. This enables production of a preform or container neck having both an external molded thread and an internal swaged thread.
  • the internal thread may be formed either with or without a change in pitch.
  • the thread may be simply a groove, such as a continuous groove around the neck.
  • the method may also include the step of smoothing a top surface of the neck while forming the internal thread.
  • the smoothing step may be accomplished by the application of heat and pressure to a top end surface of the neck.
  • a separate finish ring may be provided which is assembled to the neck such that the ring is received over an outer surface of the neck.
  • This finish ring may have an external thread, and may itself be a molded plastic article.
  • one or more of the tools may be heated.
  • the neck of the preform or container may be heated to facilitate formation of the swaged internal thread.
  • an article is provided comprising a plastic preform or container.
  • the article has a cylindrical neck of substantially uniform wall thickness, and at least one internal swaged thread in the neck.
  • the article may further comprise a finish ring secured over the neck and having at least one external thread.
  • the external thread may be formed by injection molding or compression molding.
  • the container may be a blow molded plastic container formed from the preform.
  • FIG. 3 is a schematic diagram that illustrates swaging an internal thread in a container molded from the preform of FIG. 1 ;
  • FIG. 4 is a sectional view of the portion of FIG. 3 within the area 4;
  • FIG. 5 is a perspective view of a preform and finish ring assembly having both internal and external threads in accordance with another embodiment of the invention;
  • FIG. 6 is a schematic diagram that illustrates swaging an internal thread in a preform having a molded external thread;
  • FIG. 7 is a sectional view of a preform having a molded external thread and a swaged internal thread;
  • FIG. 8 is a sectional view of a preform with an internally formed horizontal groove (as the internal swaged thread) in accordance with another embodiment;
  • FIG. 9 is a schematic diagram that illustrates various alternative relative movements of the preform and first and second tools, in accordance with various embodiments of the invention.
  • FIG. 10 is a schematic diagram that illustrates a combined step of swaging an internal thread in a container and smoothing the top surface of the neck of the container.
  • FIG. 1 illustrates an exemplary container preform 10 having a body 12 and an integral neck 14.
  • Neck 14 preferably is cylindrical in contour, and as molded has no internal or external threads in this embodiment.
  • the specific preform 10 illustrated in FIG. 1 is molded with an external stop bead 16 for cooperating with tamper-indicating structure in a closure secured to the final container, and a support flange 18 that facilitates handling of the preform and the container. Bead 16 and flange 18 are optional.
  • Cylindrical neck 14 is of generally uniform radial wall thickness.
  • Preform 10 can be injection molded or compression molded of monolayer plastic construction such as PET, or of multilayer plastic construction having matrix or structural layers of PET, for example, and one or more intermediate layers of barrier material such as ethylene vinyl alcohol (EVOH) or nylon.
  • the barrier layers may or may not extend into the preform neck 14.
  • internal threads are swage-formed in neck 14 either prior to or subsequent to blow molding of the preform body 12. As illustrated in FIG. 2, one or more internal threads 20 are swaged in preform neck 14 prior to blow molding preform body 12.
  • Threads 20 are swaged into the preform neck by means of a first rotary tool 22 that engages the inner surface of neck 14, and a second rotary tool 24 that engages the outer surface of neck 14.
  • Inner tool 22 includes a disk 26 with a peripheral channel 28.
  • Outer tool 24 includes a disk 30 having a peripheral bead or rib 32.
  • FIG. 3 illustrates an alternative technique for swaging internal threads 20 in preform neck 14 after blow molding container body 12a.
  • Reference numerals in FIG. 3 that are identical to those in FIGS. 1-2 indicate identical parts.
  • the neck 14 remains of substantially uniform radial thickness as illustrated in FIG. 4.
  • FIG. 5 illustrates a method of forming a preform or container having both internal and external threads in the preform or container finish.
  • FIG. 5 After swaging one or more internal threads 20 into the neck 14 of the preform or container (FIG. 2 or FIG. 3), a separately made finish ring 34 is secured over the external surface of neck 14. Finish ring 34 has one or more external threads 36 preformed therein. As a modification to FIG. 5, stop bead 16 and/or support flange 18 may be formed in ring 34 rather than in the preform.
  • the final container in accordance with the embodiment of FIG. 5 includes both internal and external threads, with the internal threads being swaged into the container neck and the external threads being formed on a separate finish ring.
  • FIGS. 6 and 7 illustrate another method of making a preform having both internal and external threads.
  • the preform is molded with external threads 42 on the preform neck 44.
  • swage tools 22, 24 are used to form internal threads 46 on neck 44. It may be desirable to heat neck 14 prior to or during the thread forming operation. This heating may be carried out by conduction from tools 22, 24.
  • the temperature of the finish neck preferably should not
  • finish neck heating to a level of 120° C or above can cause
  • one or more internal threads are swage formed on the E wall of preform and container neck 14. All or a portion of the preform or container neck can be crystallized before or during formation of internal threads 20 to prevent shrinkage or distortion. This would be particularly desirable in hot-fill applications, where the temperature of the material placed in the container otherwise might cause shrinkage or distortion of the container finish.
  • FIG. 8 shows the cross section of a perform 50 having a body 52 and a neck 54.
  • an internal thread in the form of a horizontal continuous groove 56 around the circumference of the neck.
  • FIG. 9 is similar to FIG. 2 in illustrating the swaging operation. However, FIG. 9 shows various directions of movement of the first tool 22 (arrows 22a, 22b), second tool 24 (arrows 24a, 24b) and perform neck 14 (arrow 14a).
  • the preform as illustrated has a body 12 and a neck 14 with a swage formed internal thread.
  • the preform has a longitudinal axis CL.
  • the first tool 22 can be rotated about an axis substantially parallel to the longitudinal axis of the perform (arrow 22a), and the first tool can also be moved axially along the longitudinal axis of the perform (arrow 22b).
  • the second tool 24 has similar directions of movement as the first tool (arrows 24a and 24b), but it is understood that the second tool will be rotating in the opposite direction as the first tool in any given operation. Overall, the second tool moves in a large arc around the perform neck (arrow 31 ) as the internal thread is formed.
  • the preform itself may be rotated about its longitudinal axis (arrow 14a), in combination with one or both of the tools. As a result of these relative directions of movement, it is possible to form a thread having either a horizontally aligned thread or groove, or a thread or groove which is pitched with respect to the longitudinal axis of the preform.
  • Fig. 10 shows a further alternative embodiment in which an internal swaged thread 62 is being formed in the neck of a container 60.
  • the first tool 80 is also smoothing the top surface 64 of the neck 66 of the container by means of a smoothing tool 82 positioned adjacent the top surface 64 of the neck.
  • the smoothing plate 82 is held in position against the top surface of the neck by a compression spring 84, and the smoothing plate may be heated in order to warm the top surface and facilitate the smoothing.
  • the first and second tools 80, 90 are shown rotating about parallel axes, in opposite directions.
  • the internal thread may be useful for attaching a closure such as a cap to seal the container, or a fitment such as a pouring spout.
  • 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.
  • 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 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)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un récipient en plastique présentant une bague filetée interne. Le récipient est fabriqué à partir d'une préforme (10) présentant un corps (12) et un col (14) solidaire par construction et le corps de la préforme est dilaté dans une cavité de moule afin de former le corps du récipient. Avant ou après moulage par soufflage du corps de préforme, au moins un filetage interne (20) est formé dans le col par mise en contact d'une surface interne du col avec un premier outil (22) présentant un canal périphérique (28), mise en contact d'une surface externe du col avec un second outil (24) présentant un bourrelet périphérique (32), et entraînement en rotation relative du col et des outils afin d'emboutir au moins un filetage interne dans le col. L'invention concerne également ladite préforme et ledit récipient.
PCT/US2004/043303 2003-12-24 2004-12-23 Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes WO2005063463A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BRPI0418199-9A BRPI0418199A (pt) 2003-12-24 2004-12-23 formação de ranhuras de recipiente ou pré-forma de roscas internas
AU2004308960A AU2004308960A1 (en) 2003-12-24 2004-12-23 Method of swage-forming of container or preform internal threads and container and preform having such internal threads
EP20040815386 EP1708866A1 (fr) 2003-12-24 2004-12-23 Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes
CA 2550668 CA2550668A1 (fr) 2003-12-24 2004-12-23 Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/746,319 2003-12-24
US10/746,319 US20050139569A1 (en) 2003-12-24 2003-12-24 Swage-forming of container or preform internal threads

Publications (1)

Publication Number Publication Date
WO2005063463A1 true WO2005063463A1 (fr) 2005-07-14

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Family Applications (1)

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PCT/US2004/043303 WO2005063463A1 (fr) 2003-12-24 2004-12-23 Procede de formation par emboutissage de filetages internes de recipient ou de preforme et recipient et preforme presentant lesdits filetages internes

Country Status (7)

Country Link
US (1) US20050139569A1 (fr)
EP (1) EP1708866A1 (fr)
CN (1) CN1898071A (fr)
AU (1) AU2004308960A1 (fr)
BR (1) BRPI0418199A (fr)
CA (1) CA2550668A1 (fr)
WO (1) WO2005063463A1 (fr)

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CA2708185C (fr) * 2007-12-05 2016-01-12 Invento Sp. Z O. O. Preforme pour un recipient en plastique, et support de preforme
US8506874B2 (en) * 2008-09-29 2013-08-13 Ti Group Automotive, L.L.C. Fuel tank opening
WO2011103677A1 (fr) 2010-02-26 2011-09-01 Husky Injection Molding Systems Ltd. Préforme adaptée au moulage par soufflage en un récipient façonné fini
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BRPI0418199A (pt) 2007-06-19
CN1898071A (zh) 2007-01-17
CA2550668A1 (fr) 2005-07-14
EP1708866A1 (fr) 2006-10-11
US20050139569A1 (en) 2005-06-30

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