US20060073296A1 - Container preform assembly and method of manufacture - Google Patents
Container preform assembly and method of manufacture Download PDFInfo
- Publication number
- US20060073296A1 US20060073296A1 US11/283,566 US28356605A US2006073296A1 US 20060073296 A1 US20060073296 A1 US 20060073296A1 US 28356605 A US28356605 A US 28356605A US 2006073296 A1 US2006073296 A1 US 2006073296A1
- Authority
- US
- United States
- Prior art keywords
- preform
- neck
- set forth
- finish ring
- external
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Images
Classifications
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
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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
- 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
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
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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
- 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
- B29C2049/2017—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 outside the article
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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
- 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
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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
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C2949/00—Indexing scheme relating to blow-moulding
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- 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
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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
- B29C2949/07—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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- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
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- B29C2949/0731—Preforms or parisons characterised by their configuration having variable diameter at neck portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
- B29C2949/0744—Preforms or parisons characterised by their configuration having ribs or protrusions at neck portion
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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
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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
- B29C2949/0769—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the lip, i.e. very top of preform neck
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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
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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
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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
- B29C2949/07—Preforms or parisons characterised by their configuration
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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
- B29C2949/0772—Closure retaining means
- B29C2949/0773—Threads
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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
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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
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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
- B29C2949/079—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
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- B29C2949/00—Indexing scheme relating to blow-moulding
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- B29C2949/079—Auxiliary parts or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C2949/0801—Finish neck ring
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/30—Preforms or parisons made of several components
- B29C2949/3056—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/05—Particular design of joint configurations
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- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
- B29C66/73773—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being semi-crystalline
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
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- 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
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- 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
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- 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
- B29K2995/004—Semi-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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
Definitions
- a container preform having a body and a finish with one or more external threads.
- the finish typically is molded to its final geometry, while the body of the preform is subsequently blow molded to the desired geometry of the container body.
- the preform may be of monolayer construction, or may be of multilayer construction in which one or more intermediate layers in the preform body may or may not extend into the finish area of the preform.
- U.S. Pat. Nos. 4,609,516, 4,710,118 and 4,954,376 illustrate injection molding of multilayer container preforms.
- Molding the finish portion of the container as part of the preform presents a number of problems.
- the plastic material typically is injected into a mold cavity at the closed end of the preform body, so that the material must flow along the sides of the preform cavity into the area in which the finish is molded.
- the finish typically requires more accurate and stable dimensioning than the body of the preform, which may limit the cycle time of the molding process.
- the finish portion of the preform is of the same material as at least the outer layers of the preform body, which limits the ability to obtain the most desirable characteristics at the finish.
- the finish portion of the preform can be wholly or partially crystallized to improve the operating characteristics of the finish area, particularly in hot-fill container applications.
- the requirement that the finish be of the same material as at least the outer layers of the preform body still limits the design capabilities of preform manufacture.
- a preform assembly for blow molding a container in accordance with a first aspect of the present invention includes a molded plastic preform having a body and a neck with an external surface. At least one circumferential channel is molded into the external surface of the preform neck for removing the preform from the forming mold. A plastic finish ring separate from the preform is externally secured to the preform neck over the external surface of the neck.
- a method of making a preform assembly for blow molding a container in accordance with a second aspect of the invention includes molding a preform having a body and a cylindrical neck with an external surface, and at least one circumferential channel molded into the external surface of the neck. A plastic finish ring is secured over the external surface of the cylindrical neck.
- FIG. 1 is an elevational view of a preform assembly in accordance with one exemplary presently preferred embodiment of the invention
- FIG. 2 is an exploded elevational view of the preform assembly illustrated in FIG. 1 ;
- FIG. 3 is a fragmentary elevational view on an enlarged scale of the portion of FIG. 2 within the area 3 ;
- FIG. 4 is a sectional view of the finish ring in the preform assembly of FIGS. 1 and 2 , being taken substantially along the line 4 - 4 in FIG. 2 ;
- FIG. 5 is a top plan view of the finish ring in FIG. 4 ;
- FIG. 6 is an elevational view of a preform assembly in accordance with a second embodiment of the invention.
- FIG. 7 is an elevational view of the preform in the assembly of FIG. 6 ;
- FIGS. 8 and 9 are sectional views taken substantially along the respective lines 8 - 8 and 9 - 9 in FIG. 7 .
- FIGS. 1-5 illustrate a preform assembly 20 in accordance with one presently preferred embodiment of the invention as comprising a preform 22 and a separate finish ring 24 secured over the neck of preform 22 .
- Preform 22 includes a body 26 having a closed lower end, and a neck 28 integrally molded with body 26 .
- Neck 32 typically is cylindrical.
- a flange 30 extends radially outwardly from the open end of neck 28 remote from body 26 .
- Neck 28 and flange 30 surround the open mouth of preform 22 .
- a pair of axially spaced circumferential channels 34 , 36 extend around the outer surface of neck 32 , which preferably is cylindrical in geometry.
- channels 34 , 36 are in planes that are parallel to each other and perpendicular to the axis of the preform neck, with upper channel 34 being spaced from flange 30 .
- Channels 34 , 36 provide gripping abutment areas for ejecting or stripping the preform from its forming mold.
- Finish ring 24 is circumferentially continuous ( FIG. 5 ).
- Finish ring 24 includes an annular cylindrical wall 38 having one or more external threads or thread segments 40 .
- a circumferential bead 42 extends around the outer surface of wall 38 beneath threads 40 for cooperating with a tamper-indicating mechanism on a closure secured to the finish of the final container.
- a capping flange 44 extends radially outwardly from the lower end of wall 38 , giving finish ring 24 a generally L-shaped lateral cross section ( FIG. 4 ) in the illustrated embodiments of the invention.
- Finish ring 24 is secured over the external surface of preform neck 28 , covering channels 34 , 36 in the embodiment of FIGS. 1-5 .
- FIGS. 6-9 illustrate a preform assembly 50 in accordance with a second exemplary but presently preferred embodiment of the invention.
- Reference numerals in FIGS. 6-9 that are identical to those employed in FIGS. 1-5 indicate identical or similar components.
- Preform assembly 50 includes a preform 52 having a separate finish ring 24 externally secured thereto.
- Preform 52 includes body 26 having a cylindrical neck 54 molded integrally with body 26 .
- a flange 30 extends radially outwardly from the upper end of neck 54 remote from body 26 and surrounding the preform mouth 32 ( FIG. 9 ).
- a pair of external circumferential channels 56 , 58 extend in spaced parallel planes around the outer surface of cylindrical neck 54 , with channel 56 being adjacent to and immediately beneath flange 30 and channel 58 being adjacent to the juncture of neck 54 with body 26 .
- At least one axial channel 60 extends along the outer surface of neck 54 interconnecting channels 56 , 58 .
- there are four axial channels 60 FIG. 9 ) circumferentially spaced around the outer surface of neck 54 at 90° spacing from each other.
- Channels 56 , 58 assist in removing preform 52 from its forming mold, as with channels 34 , 36 in the embodiment of FIGS. 1-5 . Furthermore, circumferential channels 56 , 58 cooperate with interconnecting axial channels 60 to provide for drainage of any liquid that may enter between the lower surface of flange 30 and the upper edge of finish ring 24 during filling of the final container.
- Preforms 22 , 52 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 22 , 52 may be injection molded or compression molded.
- finish ring 24 may be of injection or compression molded plastic construction.
- the finish ring 24 may be of any desired material construction, either the same as or more preferably different from the material construction of the preform.
- finish ring 24 can be of PET, post consumer resin (PCR), process regrind (REG), polypropylene (PP), polyethylene (PE) or polyethylene naphthalate (PEN) construction.
- finish ring 24 is of polyester construction (e.g., PET or PEN)
- 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 finish ring 24 may be selected separately from the material and manufacturing conditions of preforms 22 , 52 to achieve desired operating characteristics at the finish area of the preform and the final container.
- the preforms 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.
- Finish ring 24 is secured to the neck 28 of the preform 22 by interference fit (e.g., press fit or shrink fit), adhesive or welding.
- interference fit e.g., press fit or shrink fit
- One presently preferred implementation of the invention involves interference press fit of finish ring 24 onto the neck of the preform.
- the preform neck and/or the finish ring can be provided with suitable means for preventing rotation of the ring on the neck.
Abstract
A preform assembly for blow molding a container includes a molded plastic preform having a body and a neck with an external surface. At least one circumferential channel is molded into the external surface of the preform neck for removing the preform from the forming mold. A plastic finish ring separate from the preform is externally secured to the preform neck over the external surface of the neck.
Description
- In the manufacture of plastic containers, it is conventional to injection mold or compression mold a container preform having a body and a finish with one or more external threads. The finish typically is molded to its final geometry, while the body of the preform is subsequently blow molded to the desired geometry of the container body. The preform may be of monolayer construction, or may be of multilayer construction in which one or more intermediate layers in the preform body may or may not extend into the finish area of the preform. U.S. Pat. Nos. 4,609,516, 4,710,118 and 4,954,376 illustrate injection molding of multilayer container preforms.
- Molding the finish portion of the container as part of the preform presents a number of problems. For example, when the preforms are formed by injection molding, the plastic material typically is injected into a mold cavity at the closed end of the preform body, so that the material must flow along the sides of the preform cavity into the area in which the finish is molded. The finish typically requires more accurate and stable dimensioning than the body of the preform, which may limit the cycle time of the molding process. Furthermore, the finish portion of the preform is of the same material as at least the outer layers of the preform body, which limits the ability to obtain the most desirable characteristics at the finish. When the preform is of polyester construction, such as polyethylene terephthalate (PET), the finish portion of the preform can be wholly or partially crystallized to improve the operating characteristics of the finish area, particularly in hot-fill container applications. However, the requirement that the finish be of the same material as at least the outer layers of the preform body still limits the design capabilities of preform manufacture.
- A preform assembly for blow molding a container in accordance with a first aspect of the present invention includes a molded plastic preform having a body and a neck with an external surface. At least one circumferential channel is molded into the external surface of the preform neck for removing the preform from the forming mold. A plastic finish ring separate from the preform is externally secured to the preform neck over the external surface of the neck. A method of making a preform assembly for blow molding a container in accordance with a second aspect of the invention includes molding a preform having a body and a cylindrical neck with an external surface, and at least one circumferential channel molded into the external surface of the neck. A plastic finish ring is secured over the external surface of the cylindrical neck.
- The invention, together with additional objects, features, advantages and aspects thereof, will be best understood from the following description, the appended claims and the accompanying drawings, in which:
-
FIG. 1 is an elevational view of a preform assembly in accordance with one exemplary presently preferred embodiment of the invention; -
FIG. 2 is an exploded elevational view of the preform assembly illustrated inFIG. 1 ; -
FIG. 3 is a fragmentary elevational view on an enlarged scale of the portion ofFIG. 2 within thearea 3; -
FIG. 4 is a sectional view of the finish ring in the preform assembly ofFIGS. 1 and 2 , being taken substantially along the line 4-4 inFIG. 2 ; -
FIG. 5 is a top plan view of the finish ring inFIG. 4 ; -
FIG. 6 is an elevational view of a preform assembly in accordance with a second embodiment of the invention; -
FIG. 7 is an elevational view of the preform in the assembly ofFIG. 6 ; and -
FIGS. 8 and 9 are sectional views taken substantially along the respective lines 8-8 and 9-9 inFIG. 7 . -
FIGS. 1-5 illustrate apreform assembly 20 in accordance with one presently preferred embodiment of the invention as comprising apreform 22 and aseparate finish ring 24 secured over the neck ofpreform 22.Preform 22 includes abody 26 having a closed lower end, and aneck 28 integrally molded withbody 26. (Directional words such as “upper” and “lower” are employed by way of description and not limitation with respect to the upright orientation of the preform assemblies and components illustrated in the drawings. Directional words such as “radial” and “circumferential” are employed by way of description and not limitation with respect to the axis of the preform neck or finish ring as appropriate.)Neck 32 typically is cylindrical. Aflange 30 extends radially outwardly from the open end ofneck 28 remote frombody 26.Neck 28 andflange 30 surround the open mouth ofpreform 22. A pair of axially spacedcircumferential channels neck 32, which preferably is cylindrical in geometry. In the embodiment ofFIGS. 1-5 ,channels upper channel 34 being spaced fromflange 30.Channels -
Finish ring 24 is circumferentially continuous (FIG. 5 ).Finish ring 24 includes an annularcylindrical wall 38 having one or more external threads orthread segments 40. In the preferred embodiment ofring 24 illustrated in the drawings, acircumferential bead 42 extends around the outer surface ofwall 38 beneaththreads 40 for cooperating with a tamper-indicating mechanism on a closure secured to the finish of the final container. Acapping flange 44 extends radially outwardly from the lower end ofwall 38, giving finish ring 24 a generally L-shaped lateral cross section (FIG. 4 ) in the illustrated embodiments of the invention.Finish ring 24 is secured over the external surface ofpreform neck 28, coveringchannels FIGS. 1-5 . -
FIGS. 6-9 illustrate apreform assembly 50 in accordance with a second exemplary but presently preferred embodiment of the invention. Reference numerals inFIGS. 6-9 that are identical to those employed inFIGS. 1-5 indicate identical or similar components.Preform assembly 50 includes apreform 52 having aseparate finish ring 24 externally secured thereto. Preform 52 includesbody 26 having acylindrical neck 54 molded integrally withbody 26. Aflange 30 extends radially outwardly from the upper end ofneck 54 remote frombody 26 and surrounding the preform mouth 32 (FIG. 9 ). A pair of externalcircumferential channels cylindrical neck 54, withchannel 56 being adjacent to and immediately beneathflange 30 andchannel 58 being adjacent to the juncture ofneck 54 withbody 26. At least oneaxial channel 60 extends along the outer surface ofneck 54interconnecting channels FIG. 9 ) circumferentially spaced around the outer surface ofneck 54 at 90° spacing from each other. Whenfinish ring 24 is assembled to preformneck 54,lower channel 58 is wholly or partially uncovered, as best seen inFIG. 6 .Channels preform 52 from its forming mold, as withchannels FIGS. 1-5 . Furthermore,circumferential channels axial channels 60 to provide for drainage of any liquid that may enter between the lower surface offlange 30 and the upper edge offinish ring 24 during filling of the final container. - Preforms 22, 52 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 22, 52 may be injection molded or compression molded. Likewise,
finish ring 24 may be of injection or compression molded plastic construction. By providingfinish ring 24 separate frompreforms finish ring 24 may be of any desired material construction, either the same as or more preferably different from the material construction of the preform. For example,finish ring 24 can be of PET, post consumer resin (PCR), process regrind (REG), polypropylene (PP), polyethylene (PE) or polyethylene naphthalate (PEN) construction. Wherefinish ring 24 is of polyester construction (e.g., PET or PEN), 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. In other words, the material and conditions of fabrication offinish ring 24 may be selected separately from the material and manufacturing conditions ofpreforms Finish ring 24 is secured to theneck 28 of thepreform 22 by interference fit (e.g., press fit or shrink fit), adhesive or welding. One presently preferred implementation of the invention involves interference press fit offinish ring 24 onto the neck of the preform. The preform neck and/or the finish ring can be provided with suitable means for preventing rotation of the ring on the neck. - There have thus been disclosed a preform assembly and a method of manufacture that fully satisfy all of the objects and aims previously set forth. The invention has been disclosed in conjunction with two exemplary presently preferred embodiments thereof, and a number of modifications and variations have been discussed. Other modifications and variations will readily suggest themselves to persons of ordinary skill in the art. The invention is intended to embrace all such modifications and variations as fall within the spirit and broad scope of the appended claims.
Claims (12)
1. A preform assembly for blow molding a container, which includes:
a molded plastic preform having a body and a neck with an external surface, at least one external circumferential channel molded into said neck external surface for removing said preform from a forming mold, and
a plastic finish ring molded separately from said preform and externally secured to said neck over said surface.
2. The preform assembly set forth in claim 1 wherein said neck has a pair of axially spaced external circumferential channels molded into said neck.
3. The preform assembly set forth in claim 2 wherein said neck has at least one external axial channel extending between said circumferential channels on said external surface of said neck.
4. The preform assembly set forth in claim 3 wherein said preform has an open mouth at one end of said neck, and wherein a first of said circumferential channels spaced from said open end is at least partially uncovered by said finish ring.
5. The preform assembly set forth in claim 4 wherein said preform has an external flange surrounding said mouth, a second of said circumferential channels being adjacent to said flange.
6. The preform assembly set forth in claim 1 wherein said finish ring has at least one external thread and an external capping flange at one axial end of said ring.
7. The preform assembly set forth in claim 1 wherein said finish ring is externally secured to said neck by interference fit, adhesive, or welding
8. The preform assembly set forth in claim 1 wherein said plastic finish ring is of a different material construction from said plastic preform.
9. The preform assembly set forth in claim 1 wherein said plastic finish ring is of a material construction selected from the group consisting of: PET, PP, PE, PEN, REG, PCR, and wholly or partially crystallized polyester.
10. A method of making a preform assembly for blow molding a container, which includes the steps of:
(a) molding a preform having a body and a neck with an external surface and at least one circumferential channel molded into said neck external surface,
(b) providing a plastic finish ring, and
(c) externally securing said finish ring over said external surface of said cylindrical neck.
11. The method set forth in claim 10 wherein said step (c) is carried out by interference fit, adhesion or welding.
12. The method set forth in claim 10 wherein said plastic finish ring is of polyester construction, and wherein said step (b) includes wholly or partially crystallizing said finish ring prior to said step (c).
Priority Applications (1)
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US11/283,566 US20060073296A1 (en) | 2003-03-28 | 2005-11-18 | Container preform assembly and method of manufacture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/403,415 US6977104B1 (en) | 2003-03-28 | 2003-03-28 | Container preform assembly and method of manufacture |
US11/283,566 US20060073296A1 (en) | 2003-03-28 | 2005-11-18 | Container preform assembly and method of manufacture |
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US10/403,415 Continuation US6977104B1 (en) | 2003-03-28 | 2003-03-28 | Container preform assembly and method of manufacture |
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US20060073296A1 true US20060073296A1 (en) | 2006-04-06 |
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US10/403,415 Expired - Fee Related US6977104B1 (en) | 2003-03-28 | 2003-03-28 | Container preform assembly and method of manufacture |
US11/283,566 Abandoned US20060073296A1 (en) | 2003-03-28 | 2005-11-18 | Container preform assembly and method of manufacture |
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US10/403,415 Expired - Fee Related US6977104B1 (en) | 2003-03-28 | 2003-03-28 | Container preform assembly and method of manufacture |
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Cited By (2)
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US20070090118A1 (en) * | 2003-11-20 | 2007-04-26 | Bogumil Milkowski | Preform of a plastic container particularly designed for packaging foodstuffs |
US20130037580A1 (en) * | 2011-08-01 | 2013-02-14 | Graham Packaging Company, Lp | Plastic aerosol container and method of manufacture |
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US20050236356A1 (en) * | 2004-04-21 | 2005-10-27 | Lonsway Michael J | Plastic container and method of integrally securing a neck attachment thereto |
US10214312B2 (en) | 2006-03-06 | 2019-02-26 | Plastipak Packaging, Inc. | Lightweight plastic container and preform |
US8857637B2 (en) | 2006-03-06 | 2014-10-14 | Plastipak Packaging, Inc. | Lightweight plastic container and preform |
US20090236302A1 (en) * | 2008-03-18 | 2009-09-24 | Graham Packaging Company, L.P. | Finish Portion For Plastic Preform and Container and Method of Making |
IT1392541B1 (en) * | 2008-12-30 | 2012-03-09 | Pet Engineering Srl | INJECTION AND BLOWING PROCESS FOR ULTRALIGHT BOTTLES SWERVE NECK |
EP2314444A1 (en) * | 2009-10-23 | 2011-04-27 | Nestec S.A. | A closure |
EP2922759B1 (en) * | 2012-11-20 | 2018-03-21 | Ring Container Technologies, LLC | Apparatus for applying a handle to a container and method thereof |
FR3013623B1 (en) * | 2013-11-28 | 2016-10-14 | Albea Services | PROCESS FOR MANUFACTURING A RIGID RECEPTACLE, IN PARTICULAR BICOUCHES, RIGID RECEPTACLE OBTAINED ACCORDING TO SAID METHOD AND DEVICE FOR IMPLEMENTING SAID METHOD |
FR3030341B1 (en) * | 2014-12-17 | 2017-06-23 | Sidel Participations | CONTAINER WITH LARGE SLEEVE WITH RETAINED SLEEVE |
CN107329289A (en) * | 2017-07-19 | 2017-11-07 | 武汉华星光电技术有限公司 | Remove electrostatic stripping off device and liquid crystal panel making apparatus |
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