DK147417B - HOLE PLASTIC - Google Patents
HOLE PLASTIC Download PDFInfo
- Publication number
- DK147417B DK147417B DK448471AA DK448471A DK147417B DK 147417 B DK147417 B DK 147417B DK 448471A A DK448471A A DK 448471AA DK 448471 A DK448471 A DK 448471A DK 147417 B DK147417 B DK 147417B
- Authority
- DK
- Denmark
- Prior art keywords
- blank
- core
- plastic
- blow
- sheath
- Prior art date
Links
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/36—Moulds having means for locating or centering cores
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
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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
- B29C49/42—Component parts, details or accessories; Auxiliary operations
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- 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
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/02—Linings or internal coatings
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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
- B29C2795/00—Printing on articles made from plastics or substances in a plastic state
- B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
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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
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
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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
- B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
- B29C2949/0725—Preforms or parisons characterised by their configuration having variable wall thickness at bottom portion
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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
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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
- B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
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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
- B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
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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
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0761—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape
- B29C2949/0762—Conical
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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
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0761—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape
- B29C2949/0767—Preforms or parisons characterised by their configuration characterised by the shape characterised by overall the shape the shape allowing stacking or nesting
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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
- B29C2949/076—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
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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
- B29C2949/076—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
- B29C2949/0771—Wide-mouth
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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
- B29C2949/076—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
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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
- B29C2949/076—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
- B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
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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
- B29C2949/076—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
- B29C2949/078—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom
- B29C2949/0781—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the bottom characterised by the sprue, i.e. injection mark
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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
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
- B29C2949/0818—Wall thickness of the bottom
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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
- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
- B29C2949/0819—Wall thickness of a layer
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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
- B29C2949/3008—Preforms or parisons made of several components at neck portion
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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
- B29C2949/3008—Preforms or parisons made of several components at neck portion
- B29C2949/3009—Preforms or parisons made of several components at neck portion partially
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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
- B29C2949/3016—Preforms or parisons made of several components at body portion
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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
- B29C2949/302—Preforms or parisons made of several components at bottom portion
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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
- B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
- B29C2949/3026—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique having two or more components
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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
- B29C2949/3032—Preforms or parisons made of several components having components being injected
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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
- B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
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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
- B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
- B29C2949/3074—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating
- B29C2949/3082—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating by powder coating
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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
- B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
- B29C2949/3084—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by casting
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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
- B29C49/42—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
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
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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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
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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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0068—Permeability to liquids; Adsorption
- B29K2995/0069—Permeability to liquids; Adsorption non-permeable
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- 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
- B29L2031/716—Bottles of the wide mouth type, i.e. the diameters of the bottle opening and its body are substantially identical
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- 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
- B29L2031/722—Decorative or ornamental articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Decoration Of Textiles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
i 147417 oi 147417 o
Den foreliggende opfindelse angår en hul plastgenstand, der er fremstillet ved trykstøbning af termoplastisk plastmateriale omkring en blæsekerne i en trykstøbeform og videreformgivet ved påfølgende blæseformning i en 5 blæseform.The present invention relates to a hollow plastic article made by molding thermoplastic plastics material around a blow core in a die mold and reshaped by subsequent blow molding in a blow mold.
Plastgenstande, der er fremstillet på denne måde, frembyder en række fordele. Man kan således til fremstilling af genstanden vælge blandt et stort antal forskellige plastmaterialer, og genstanden har typisk en stor målnøj-10 agtighed og skal ikke efterbearbejdes efter fremstillingen.Plastic articles made in this way offer a number of advantages. Thus, for the manufacture of the article one can choose from a large number of different plastics materials, and the article typically has a high accuracy of measurement and does not need to be post-processed after manufacture.
Afhængigt af genstandens udformning og typisk for genstande, hvor det om blæsekernen støbte plastmateriale har en stor udstrækning i længden i forhold til tværmålet, kan der under fremstillingen i plastmaterialet og/-15 eller i blæsekernen forekomme temperaturforskelle, som bevirker, at den formblæste genstand har unøjagtige mål, har kastet sig, eller i værste fald er kassabel.Depending on the design of the article and typically for articles where the molded plastic material of the blow core has a great length in relation to the cross-section, during the manufacture in the plastic material and / -15 or in the blow core there may be temperature differences which cause the mold blown article to have inaccurate targets, have thrown themselves, or at worst are culpable.
For at modvirke disse mangler hos genstanden foreslås det ifølge opfindelsen, at genstanden består af et 20 forformet indre hylster af termoplastisk materiale, der ved trykstøbning i trykstøbeformen, i hvilket det indre hylster var påsat blæsekernen, er blevet påstøbt et ydre lag af termoplastisk materiale, hvilket laminerede plast-råemne er blevet videreformgivet ved blæseformning i blæ-25 seformen, og at hylsteret og det ydre lag klæber til hinanden over i hovedsagen hele deres indbyrdes kontaktflade.In order to counteract these defects in the article, it is proposed according to the invention that the article consists of a preformed inner sleeve of thermoplastic material which, upon injection molding in the mold, in which the inner sleeve was attached to the blow core, has been molded an outer layer of thermoplastic material. which laminated plastic blank has been reshaped by blow molding in the blow mold, and that the casing and outer layer adhere to each other substantially their entire contact surface.
Det har vist sig, at man ved disse foranstaltninger også ved genstande, der har en stor længdeudstrækning i forhold til deres tværmål, i vidt omfang har kunnet und-30 gå de førnævnte ulemper og mangler hos den færdige genstand, formodentlig fordi hylsteret under trykstøbningen af råemnet virker som et varmeisolerende lag mellem kernen og det trykstøbte plastmateriale og derved bevirker en mere ensartet temperatur både i dette og i kernen. Sam-35 tidig opnås en lamineret genstand, hvori de indgående plastlag er indbyrdes forbundne og danner en i ét stykke sammenhængende genstand.It has been found that these measures have also largely been able to avoid the aforementioned disadvantages and shortcomings of the finished object, even with articles of a great length in relation to their cross-dimensions, presumably because the blank acts as a heat-insulating layer between the core and the molded plastic material, thereby causing a more uniform temperature in both the core and the core. At the same time, a laminated article is obtained in which the incoming plastic layers are interconnected and form a one-piece continuous object.
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Denne fordelagtige virkning kan opnås, selv om hylsterets termoplastiske materiale har samme egenskaber som det termoplastiske materiale i det ydre lag, eller når der er tale om samme termoplastiske materiale i hylst-5 eret og det ydre lag.This advantageous effect can be obtained even if the sheath thermoplastic material has the same properties as the thermoplastic material in the outer layer or in the case of the same thermoplastic material in the sheath and outer layer.
Ved en foretrukken udførelsesform for genstanden ifølge opfindelsen foretrækkes det imidlertid, at det indre hylster har egenskaber, der adskiller sig fra det ydre lags egenskaber. Herved kan man opnå, at genstanden 10 opfylder krav og specifikationer, som vanskeligt kan opfyldes af en genstand bestående af materialer med samme egenskaber.However, in a preferred embodiment of the article of the invention, it is preferred that the inner casing has properties different from those of the outer layer. Hereby, the object 10 can be obtained to meet requirements and specifications which can be difficult to be met by an object consisting of materials having the same properties.
Det indre hylster kan således bestå af plastmateriale med egenskaber såsom uigennemtrængelighed for gas-15 arter og/eller uopløselighed i væsker, mens det ydre lag kan bestå af plastmateriale med egenskaber såsom stor mekanisk styrke og/eller lav pris.Thus, the inner casing may consist of plastic material having properties such as gas impermeability and / or insolubility in liquids, while the outer layer may consist of plastic material having properties such as high mechanical strength and / or low cost.
Ved på denne måde at udforme genstanden ifølge opfindelsen som et laminat af to lag med forskellige egen-20 skaber kan den finde anvendelse på en række områder som f.eks. til beholdere til drikkevarer eller til flydende, delvis flydende eller pastaagtige madvarer, hvor man hidtil har anvendt beholdere af andre materialer såsom glas eller fortinnet blik, og hvor det indre lag eller hylste-25 ret er tyndt og indifferent overfor beholderens indhold og samtidig udgør en oxygenbarriere, mens det ydre lag meddeler beholderen fornøden styrke til håndtering, stab-ling og transport.In this way, by designing the article according to the invention as a laminate of two layers with different properties, it can be used in a number of areas such as e.g. for containers for beverages or for liquid, partially liquid or paste-like foodstuffs which have heretofore used containers of other materials such as glass or tinned tin, and wherein the inner layer or sheath is thin and inert to the contents of the container and at the same time constitutes a oxygen barrier, while the outer layer provides the container with the necessary strength for handling, stacking and transport.
Ved en særlig udførelsesform for opfindelsen har 30 det ene af de to plastmaterialelag i genstanden en diskontinuitet, som er udfyldt med materiale fra det andet lag.In a particular embodiment of the invention, one of the two plastic material layers in the article has a discontinuity which is filled with material from the second layer.
Hvis dette andet lag er hylsteret eller det indre lag, kan genstanden anvendes til beholdere, hvor diskon-35 tinuiteten danner en udtømningsåbning, som, indtil beholderen benyttes første gang, forsegler beholderens indhold med materialet fra det andet lag.If this second layer is the sheath or inner layer, the article may be used for containers where the discontinuity forms a discharge opening which, until the container is first used, seals the contents of the container with the material of the second layer.
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Opfindelsen skal i det følgende beskrives nærmere, idet der henvises til tegningen, på hvilken fig. 1 viser i længdesnit et hylster, der er beregnet til at omgive en blæsekerne af den type, som er 5 egnet for fremstilling af en formblæst flaske, fig. 2 i længdesnit en råemneform med blæsekernen overdækket med det i fig. 1 viste hylster, fig. 3 et længdesnit med blæsekernen trukket op af råemneformen med råemnet på, 10 fig. 4 et længdesnit med blæsekernen i blæsestil- ling i en blæseform, hvis hulhed er formet til dannelse af en flaske, fig. 5 skematisk en vakuumform, hvori et hylster kan formes, 15 fig. 6 skematisk en holder for opstablede hylstre og en blæseform i stilling overfor en blæsekerne, fig. 7 i perspektiv et materialelag med et antal formede hylstre, inden disse er afskåret og opstablede, og fig. 8 et snit gennem en beholder med en kontinu-20 erlig foring, der dækker over udtømningsåbningen.The invention will now be described in more detail with reference to the drawing, in which: FIG. 1 is a longitudinal sectional view of a sleeve intended to surround a blower core of the type suitable for the manufacture of a blown bottle; FIG. 2 is a longitudinal sectional view of a blank blank with the blower core covered with that of FIG. 1; FIG. 3 is a longitudinal sectional view of the blower core drawn up by the blank blank with the blank blank; FIG. 4 is a longitudinal sectional view of the blower core in blowing position in a blow mold whose hollow shape is formed to form a bottle; FIG. 5 schematically shows a vacuum shape in which a sleeve can be formed; FIG. 6 schematically shows a holder for stacked casings and a blow mold in position opposite a blow core; FIG. 7 is a perspective view of a material layer having a plurality of shaped casings prior to being cut and stacked; and FIG. 8 is a section through a container with a continuous liner covering the discharge port.
Fig. 1 viser et hylster 1 til en blæsekerne, som skal benyttes i en påfølgende støbeproces, hvor hylsteret har en indvendig overflade, der nøje svarer til blæse-kernens udvendige flade. Hylsterets tykkelse kan variere.FIG. 1 shows a sleeve 1 for a blow core to be used in a subsequent casting process, the sleeve having an inner surface that closely matches the outer surface of the blow core. The thickness of the casing may vary.
25 Således kan dets sidevægge 2 være ganske tynde, såsom mellem 0,025 og 0,5 mm, mens dets bund 3 kan være to til ti gange så tyk som sidevæggene og have en form, som er indrettet på en sådan måde, at den flugter med råemneformen. Hylsterets kant 4 kan svare til den øverste del af den 30 hule genstand, som skal fremstilles. Sådanne hylstre kan fremstilles af en række plastmaterialer til rimelig pris og efter metoder, som er velkendt inden for faget, f.eks. varmformning, pulverovertrækning og støbning, og ved hjælp af andre metoder, som er velkendt indenfor fremstilling 35 af tyndvæggede, formede plastartikler.Thus, its side walls 2 can be quite thin, such as between 0.025 and 0.5 mm, while its bottom 3 can be two to ten times as thick as the side walls and have a shape which is arranged in such a way that it flushes with råemneformen. The edge 4 of the sheath may correspond to the upper portion of the hollow article to be manufactured. Such sheaths can be made from a variety of reasonably priced plastics materials and by methods well known in the art, e.g. heat forming, powder coating and casting, and by other methods well known in the manufacture of thin-walled, shaped plastic articles.
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En metode til formning af hylstrene vises i fig.A method of forming the casings is shown in FIG.
5, 6 og 7, hvor et ark 20 af det materiale, hvoraf hylsteret skal fremstilles, efter at være opvarmet til en temperatur, ved hvilken dette materiale kan deformeres, an-5 bringes i stilling ud for åbningen i en hylsterform 21, hvorefter der gennem en ledning 22 dannes vakuum i hylsterformens formhulhed, og arket omdannes til den ønskede form ved vakuumformning, det vil sige ved en strækningsproces som efter sin natur medfører, at arket bliver tyndere. Ad-10 skillige hylstre, som er formet på denne måde, kan nu stables op på hinanden og anbringes i en holder 23, se fig. 6, som kan bringes i stilling ud for en blæsekerne 5 i en form-blæsemaskine. Dannelsen af hylsteret 1 kan ske ét ad gangen eller kontinuerligt, idet begge fremgangsmåder er vel-15 kendte indenfor dette fagområde. Hvis det sker kontinuerligt, kan det, som produceres ved formningsprocessen, svare til den formede materialebane 24 i fig. 7, hvori partier 25 er formet på en sådan måde, at de svarer til den i fig. 5 viste form 21, og forbindes af partier af den ikke 20 deformerede materialebane 26. Som alternativ til at anbringe hylstrene i en holder 23 som i fig. 6, kan en sådan materialebane 26 føres frem over blæsekernen 5 på en sådan måde, at den ene formede del 25 efter den anden, kommer i stilling i forhold til blæsekernen 5. Det er 25 klart, at de formede hylstre må løsgøres fra materialebanen 26. Dette kan imidlertid ske enten før eller efter, at hylstrene 1 anbringes over blæsekernen 5.5, 6 and 7, where a sheet 20 of the material from which the sheath is to be made, after being heated to a temperature at which this material can be deformed, is placed in position next to the opening in a sheath form 21, after which through a conduit 22, vacuum is formed in the mold cavity of the casing mold and the sheet is converted to the desired shape by vacuum molding, that is, by a stretching process which, by its nature, causes the sheet to become thinner. Various 10 sleeves formed in this way can now be stacked on top of one another and placed in a holder 23, see fig. 6, which can be positioned next to a blower core 5 in a mold blower. The formation of the sheath 1 can be done one at a time or continuously, both methods being well known in the art. If it is continuous, what is produced by the forming process may correspond to the shaped material web 24 of FIG. 7, wherein portions 25 are shaped in such a way that they are similar to that of FIG. 5, and is joined by portions of the non-deformed material web 26. Alternatively, to place the sleeves in a holder 23 as in FIG. 6, such a web of material 26 can be advanced over the blower core 5 in such a way that one shaped portion 25 after the other comes into position relative to the blower core 5. It is clear that the shaped sleeves must be detached from the web of material 26 However, this can be done either before or after the casings 1 are placed over the bladder core 5.
Som et yderligere alternativ kan en ikke-defor-meret materialebane bringes i stilling i forhold til blæ-30 sekernen, og blæsekernen selv kan da benyttes til at forme hylsteret i materialebanen.As a further alternative, a non-deformed material web can be positioned relative to the blower core, and the blower core itself can then be used to shape the sleeve in the material web.
Dersom hylstrene 1 anbringes på blæsekernen fra en holder 23 som den i fig. 6 viste, kan man eksempelvis få dem til at sidde fast på blæsekernen 5 på følgende qe made: Efter at holderen 23 og blæsekernen 5 er i stilling ud for hinanden, indsættes blæsekernen relativt løst i 147417 5 o det første hylster i stabelen. Hylstrene i holderen er ikke fast stablet og kan om fornødent holdes en smule adskilt fra hinanden ved hjælp af luftstråler, som virker imellem hylstrene. Når blæsekernen 5 først er indsat på 5 denne måde, kan der tilsluttes vakuum gennem blæseåbnin-gen 15, hvormed blæsekernen er udstyret for at kunne blæse råemnet til dets endelige form, og hylsteret kan derved blive trykket imod blæsekernen på en sådan måde at det derefter vil blive siddende på denne. Derefter fjernes blæ-10 sekernen 5 med hylsteret, som sidder fast derpå, fra holderen 23, som kan flyttes til siden. Holderen 23 kan naturligvis være indrettet til blot at bære et enkelt hylster 1, som i så fald ville blive indsat i holderen i et opbevaringsafsnit ved siden af aggregatet for senere at 15 kunne overføres til blæsekernen.If the sheaths 1 are mounted on the blower core from a holder 23 such as the one shown in FIG. 6, for example, they can be secured to the blower core 5 in the following manner: After the holder 23 and the blower core 5 are positioned next to each other, the blower core is inserted relatively loosely in the first casing in the stack. The casings in the holder are not firmly stacked and, if necessary, can be kept slightly apart from each other by means of air jets operating between the casings. Once the blower core 5 is inserted in this way, vacuum can be connected through the blower opening 15, with which the blower core is equipped to blow the blank to its final shape, and the sleeve can thereby be pressed against the blower core in such a way that will be sitting on this one. Then, the ink clip 5 with the sleeve attached thereon is removed from the holder 23 which can be moved to the side. The bracket 23 can, of course, be arranged to carry only a single casing 1, which would then be inserted into the bracket in a storage section adjacent to the assembly for later transferability to the blow core.
Fig. 2 viser en råemneform 6 og et værktøj til dannelse af den åbne ende af den hule genstand, illustreret som en halsring 7. En kanal 8 forbinder råemneformen 6 med et forråd af varm plast, som findes i en cylinder 20 9, hvorfra den smeltede plast kan trykkes ind i råemnefor men 6 af et stempel 10 under tilstrækkelig tryk til, at hulrummet mellem blæsekernen 5 og råemneformen 6 og ligeledes hulrummet indvendigt i halsringen 7, som står i forbindelse med råemneformen, hurtigt kan fyldes.FIG. 2 shows a blank blank 6 and a tool for forming the open end of the hollow article, illustrated as a neck ring 7. A duct 8 connects the blank blank 6 to a stock of hot plastic contained in a cylinder 20 9 from which the molten plastic can be pressed into the blank piece 6 but by a piston 10 under sufficient pressure that the cavity between the blow core 5 and the blank piece 6 and also the cavity inside the neck ring 7 which is connected to the blank piece can be filled quickly.
25 Råemnet 11, der er et laminat, og som indehol der hylsteret 1, som det er formet i det i fig. 2 viste apparat, kan fjernes fra råemneformen 6 sammen med blæsekernen 5 og halsringen 7 som vist i fig. 3, og indsættes i en blæseform 12. Trykmedium fra en ikke vist kilde kan 30 lukkes ind i råemnet 11's indre gennem passager 13, som står i forbindelse med blæseåbninger 15. Blæseformen 12 har en formhulhed 14, som svarer til formen af den hule genstand, der skal fremstilles, og den kan bestå af to halvdele, som kan skilles, når det er nødvendigt for at 35 fjerne den færdige genstand, der er fremstillet deri.The blank 11, which is a laminate, and which contains the casing 1 as formed in the embodiment of FIG. 2 can be removed from the blank blank 6 together with the blower core 5 and the neck ring 7 as shown in FIG. 3, and inserted into a blow mold 12. Pressure medium from a source not shown may be closed into the interior of the blank 11 through passageways 13 which are connected to blow openings 15. The blow mold 12 has a mold cavity 14 corresponding to the shape of the hollow article to be made, and may consist of two halves which may be separated when necessary to remove the finished article made therein.
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Ved gennemførelse af denne fremgangsmåde kan hylstre svarende til det i fig. 1 viste fremstilles ved enhver af de ovenfor omtalte metoder uafhængigt af den formblæs-ningsoperation, som her beskrives. Alternativt kan hylst-5 rene også formes på stedet, som f.eks. ved at lægge plast-råfolie tætsluttende op mod kernen 5. Hylstermaterialet må have deformationsegenskaber, som svarer til eller overgår råemnematerialets ved de temperaturer, som normalt benyttes for at blæse råemnet op i blæseformens hulhed 14.In carrying out this method, casings similar to that of FIG. 1 is prepared by any of the above-mentioned methods independently of the blow molding operation described herein. Alternatively, the sleeves may also be formed on site, e.g. by laying plastic raw foil tightly against the core 5. The sheath material must have deformation properties which correspond to or exceed that of the raw material material at the temperatures normally used to inflate the blank into the cavity of the blow mold 14.
10 Laminerede råemner, som er fremstillet på den oven for beskrevne måde kan, dersom det ønskes, oplagres, før de blæses op i blæseformen. I en sådan proces fremstilles råemnerne på en kerne, som ikke er en blæsekerne, fjernes fra denne kerne til oplagring, og opvarmes på ny inden blæs-15 ningen, alt efter i faget kendte metoder.10 Laminated blanks prepared in the manner described above may, if desired, be stored before being inflated in the blow mold. In such a process, the blanks are prepared on a core which is not a blow core, removed from this core for storage, and reheated before blowing, according to methods known in the art.
Det materiale, hvoraf hylsteret fremstilles, kan være i stand til at binde på råemnets materiale ved den temperatur, som normalt benyttes til sprøjtestøbning af sidstnævnte materiale. For at lette denne binding kan hylst-20 erets udvendige overflade, som kommer i berøring med råemnet 11's indsprøjtede plast, behandles efter metoder, som er kendt i faget, til at fremme bindingen mellem plastoverflader. F.eks. kan hylsterets udvendige overflade, hvis den skal fremstilles af polyethylen, flammebehandles. I andre 25 tilfælde kan den gøres klæbende ved påføring af et opløsningsmiddel forud for råemnetrykstøbningen. Alternativt kan hylsteret formes af lamineret materiale på en sådan måde, at hylsterets overflade, som kommer i berøring med den indsprøjtede plast, er i stand til at binde på denne.The material from which the sheath is made may be capable of bonding to the material of the blank at the temperature normally used for injection molding of the latter material. To facilitate this bonding, the outer surface of the casing, which comes into contact with the injected plastic of the blank 11, can be treated by methods known in the art to promote bonding between plastic surfaces. Eg. For example, the outer surface of the sheath, if it is to be made of polyethylene, can be flame-treated. In other 25 cases, it can be made adhesive by application of a solvent prior to the blank blank molding. Alternatively, the sheath may be formed of laminated material in such a way that the surface of the sheath which contacts the injected plastic is capable of bonding thereon.
30 Hylsteret 1 behøver ikke at være fremstillet af et enkelt materiale. F.eks. kan hylsterets sidevægge 2 være fremstillet af et materiale, som afviger fra materialet i hylsterets bund 3, som i visse tilfælde kan forsynes med forstærkning for bedre at understøtte råemnet.The casing 1 need not be made of a single material. Eg. For example, the side walls 2 of the sheath may be made of a material which differs from the material in the bottom 3 of the sheath, which in some cases may be provided with reinforcement to better support the blank.
35 Når blæsekernens spids er i stilling i råemnefor- men og omgivet af hylsterets bund 3, kan den holdes fastWhen the tip of the bladder core is in position in the blank and surrounded by the bottom 3 of the sleeve, it can be held
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7 147417 imod råemneformens indervæg, dersom det ønskes at stabilisere blæsekernen. Efter at blæsekernen er i stilling, indsprøjtes varm plast i råemneformen gennem åbningen 8 ved hjælp af stemplet 10, som arbejder i trykcylinderen 9. Ef-5 ter indsprøjtningen omgiver den varme plast hylsteret 1 under tryk. På grund af den derved etablerede intime kontakt mellem den varme plast og hylsterets udvendige flade opvarmes hylsteret hurtigt, indtil dets temperatur nærmer sig den indsprøjtede plasts. Ved denne temperatur forøges 10 adhæsionen mellem de to materialer normalt, og hylsterets materiale opvarmes desuden tilstrækkeligt til at gøre hylsteret deformerbart i samme tempo, som der indsprøjtes plast. Som følge deraf indgår hylsteret forbindelse med den indsprøjtede plast til dannelse af det laminerede rå-15 emne 11.7 147417 against the inner wall of the blank, if it is desired to stabilize the blow core. After the blow core is in position, hot plastic in the blank form is injected through the aperture 8 by means of the piston 10, which operates in the pressure cylinder 9. After the injection, the hot plastic envelope 1 is pressurized. Because of the intimate contact thus established between the hot plastic and the outer surface of the casing, the casing is rapidly heated until its temperature approaches the injected plastic. At this temperature, the adhesion between the two materials is normally increased, and the material of the sheath is additionally heated sufficiently to render the sheath deformable at the same rate as plastic is injected. As a result, the sheath includes connection with the injected plastic to form the laminated raw blank 11.
Efter at være anbragt over blæsekernen 5 kan hylsteret 1 dække fluidumpassagen 13, der derved beskyttes mod, at plast, der indsprøjtes under råemnestøbningen, trænger ind i den. Derved forenkles konstruktionen af blæsekernen, 20 og dens virkemåde bliver mere pålidelig.After being placed over the blower core 5, the sheath 1 can cover the fluid passage 13, thereby protecting against the plastic injected during the blank casting into it. This simplifies the construction of the blower core, 20 and its operation becomes more reliable.
Under trykstøbningsprocessen isoleres blæsekernen 5 fra den varme plast og beskyttes mod friktionen af den plast, som flyder med stor hastighed og højt tryk omkring blæsekernen.During the pressure casting process, the blower core 5 is insulated from the hot plastic and protected against the friction by the plastic flowing at high speed and high pressure around the blower core.
25 Det er under tiden fordelagtigt, at man inden hylsteret udvides ved blæsning, opvarmer det indefra såvel som udefra, f.eks. ved hjælp af råemnets netop indsprøjtede plast. Dette lader sig uden vanskelighed gennemføre ved at konstruere blæsekernen af et metal, som er en 30 god varmeleder, f.eks. et forholdsvis blødt metal såsom, aluminium, da det ikke behøver at kunne modstå plastens erosionsvirkning vinder indsprøjtningen, og ved at opvarme blæsekernen elektrisk i stedet for at benytte fluidumcirkulation, som det er almindeligt ved trykstøbnings-35 formblæsning, for at modvirke den temperaturstigning, som ellers forårsages af den gentagne indsprøjtning af plast.In the meantime, it is advantageous that before the sheath is expanded by blowing, it heats from the inside as well as from the outside, e.g. using the just-injected plastic of the blank. This is easily accomplished by constructing the blow core of a metal which is a good thermal conductor, e.g. a relatively soft metal such as aluminum, since it does not have to withstand the erosion effect of the plastic, the injection gains, and by electrically heating the blower core, rather than using fluid circulation, as is common in die cast mold blowing, to counteract the temperature rise which otherwise caused by the repeated injection of plastic.
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For at forhindre, at blæsekernen deformeres af den indsprøjtede plast, og for derved at forhindre uønskede variationer i råemnevægtykkelsen, kan blæsekernen 5 trykkes fast imod bunden af råemneformen, som det vises 5 i fig. 2. Da hylsteret omgiver blæsekernen, vil faktisk kun hylsteret være i berøring med råemneformen. Da der ikke kan flyde nogen plast ind i dette berøringsområde, dannes der i dette område en diskontinuitet, som svarer til bunden 3 i hylsteret. Hylsteret kan være formet på en så-10 dan måde, at det i bunden 3 har en tykkelse, der svarer til den ønskede tykkelse af den færdige hule genstand på dette sted. I det område, der ligger umiddelbart omkring berøringsområdet mellem hylsteret og råemneformen, er hylsteret fast forbundet med eller sammensmeltet med råemnet.To prevent the blow core from being deformed by the injected plastic, and to prevent unwanted variations in the blank wall thickness, the blow core 5 can be pressed firmly against the bottom of the blank blank as shown 5 in FIG. 2. As the casing surrounds the bladder core, only the casing will be in contact with the blank form. Since no plastic can flow into this contact area, a discontinuity is formed in this region corresponding to the bottom 3 of the casing. The casing may be shaped in such a way that at the bottom 3 it has a thickness corresponding to the desired thickness of the finished hollow article at this location. In the area immediately surrounding the contact area between the sleeve and the blank blank, the sleeve is firmly connected to or fused to the blank.
15 Derved undgås en åbning i det laminerede råemnes væg.This avoids an opening in the wall of the laminated blank.
Efter formning af råemnet ved trykstøbning og hylsterets forening med den indsprøjtede plast fjernes blæsekernen 5 fra råemneformen sammen med halsringen 7 og med råemnet 11, som sidder derpå, som det er vist i fig. 3, 20 derefter indsættes den i blæseformen 12, se fig. 4.After molding the blank by molding and the casing's association with the injected plastic, the blow core 5 is removed from the blank blank along with the neck ring 7 and with the blank 11, which sits thereon, as shown in FIG. 3, 20 it is then inserted into the blow mold 12, see FIG. 4th
Med henblik på nøjagtig placering af blæsekernen 5 i blæseformen 12 kan blæsekernen presses imod bunden af blæseformen, med det laminerede råemnes bund eller hylsterets bund 3 imellem, alt efter omstændighederne. Blæse-25 kernen holdes således i stilling i blæseformen, ligesom den var korrekt placeret i trykstøbeformen. Som næste trin lukkes trykfluidum, i regelen komprimeret luft, ind i det laminerede råemne gennem fluidumpassagen 13 og blæ-seåbningen 15, og råemnet udvides ud i blæseformen 12 for at antage form efter blæseformshulheden 14, således som det er antydet med punkterede streger i fig. 4. Fluidumtrykket opretholdes, indtil den blæste genstand er afkølet tilstrækkeligt i berøring med blæseformen 12's vægge til, at den kan udtages derfra.In order to accurately position the blow core 5 in the blow mold 12, the blow core can be pressed against the bottom of the blow mold, with the bottom of the laminated blank or the bottom 3 of the sheath, as the case may be. The blower core is thus held in position in the blow mold as well as properly positioned in the mold. As the next step, pressure fluid, usually compressed air, is closed into the laminated blank through the fluid passage 13 and the blow opening 15, and the blank is expanded into the blow mold 12 to take shape after the blow mold cavity 14, as indicated by dashed lines in FIG. . 4. The fluid pressure is maintained until the blown object has cooled sufficiently in contact with the walls of the blow mold 12 for removal.
En vigtig fordel ved at have et hylster 1 som en bestanddel af et råemne på dettes inderside og ved at forme 35An important advantage of having a casing 1 as a constituent of a blank on the inside thereof and by forming 35
OISLAND
9 147417 et lamineret produkt deraf er, at den færdige genstand 10 får egenskaber, som et enkelt plastmateriale alene ikke har. F.eks. er polyvinylidenchlorid, acrylonitrilpolymere og visse andre plastmaterialer i besiddelse af fortrin-5 lige oxygenspærringsevner, men kun til en temmelig høj pris. På den anden side er polystyren relativt billigt, har ønskelige mekaniske egenskaber, men er samtidig meget gennemtrængeligt for oxygen. For at fremstille relativt billige beholdere med god modstandsevne overfor oxygengen-10 nemtrængning kan man benytte et tyndt hylster af den dyre plast, som er uigennemtrængelig, i forbindelse med polystyren, som skal danne den færdige genstands hovedmasse.A laminated product thereof is that the finished article 10 has properties that a single plastic material alone does not have. Eg. polyvinylidene chloride, acrylonitrile polymers, and certain other plastics materials possess excellent oxygen blocking capabilities, but only at a fairly high cost. On the other hand, polystyrene is relatively inexpensive, has desirable mechanical properties, but is also highly permeable to oxygen. In order to produce relatively inexpensive containers with good resistance to oxygen penetration, a thin, impervious plastic casing may be used in conjunction with polystyrene to form the main body of the finished article.
Visse plastmaterialer, f.eks. polyvinylidenchlorid, er vanskelige at håndtere i nogle af de beskrevne proces-15 ser, idet de er tilbøjelige til at falde sammen eller til at klæbe sammen. For at lette håndteringen af sådanne materialer kan selve hylstrene være fremstillet som sammensatte produkter af lamineret folie, hvori sådant materiale, som er vanskeligt at arbejde med, bæres af eller imellem 20 lag af et andet plastmateriale, som kan håndteres uden vanskelighed eller som beskytter imod sammenfald, alt efter hvad der er aktuelt.Certain plastics, e.g. polyvinylidene chloride, are difficult to handle in some of the processes described, as they are prone to collapse or stick together. In order to facilitate the handling of such materials, the casings themselves may be made as composite products of laminated foil wherein such difficult-to-work material is supported by or between 20 layers of another plastic material which can be handled without difficulty or which protects against coincide, as applicable.
En anden vigtig grund til at benytte laminerede hylstre er, at man derved kan tilvejebringe yderligere kom-25 binationer af egenskaber såsom modstandsdygtighed overfor opløsningsmidler, modstandsdygtighed overfor passage af gasser og evne til at klæbe til den plast, som støbes omkring hylsteret. En sådan kombination kan f.eks. opnås ved, at hylsteret fremstilles af en lamineret folie be-30 stående af lag af polyethylen, polyvinylchlorid, polyvinylidenchlorid og polystyren, idet hylsteret omgives med polystyren under råemnetrykstøbningen. Mange af de plastmaterialer, som har gode egenskaber med hensyn til modstandsdygtighed mod gasgennemtrængelighed eller modstands-35 dygtighed overfor opløsningsmidler, er for kostbare til fremstilling af beholdere med stive vægge i handelskvali- 10 147417 o teter. Det drejer sig om f.eks. acetalpolymere, ionomere harpikser, polyallomere copolymere, polycarbonater, polypropylen, polyvinylidenchlorid, acrylonitril- og methacryl-nitrilpolymere, nylon og andre medens andre plastmateria-5 ler såsom polystyren og polyethylen er billige, men ikke har tilstrækkelige egenskaber som gasspærrelagsvirkning eller modstandsdygtighed overfor opløsningsmidler. I mange tilfælde er det materiale, som har de for et givet formål Ønskede egenskaber, ikke direkte foreneligt med det 10 materiale, hvoraf beholderens hovedmasse skal fremstilles, og kræver derfor et yderligere lag imellem sig og beholderens hovedmasse, hvilket lag er foreneligt med begge.Another important reason for using laminated casings is that it can thereby provide additional combinations of properties such as solvent resistance, gas resistance and ability to adhere to the plastic molded around the casing. Such a combination can e.g. is achieved by the sheath being made of a laminated film consisting of layers of polyethylene, polyvinyl chloride, polyvinylidene chloride and polystyrene, the sheath being surrounded with polystyrene during the blanking molding. Many of the plastics materials which have good properties of gas resistance or solvent resistance are too costly to manufacture rigid-walled containers of merchantable quality. This is about e.g. acetal polymers, ionomeric resins, polyallomeric copolymers, polycarbonates, polypropylene, polyvinylidene chloride, acrylonitrile and methacrylonitrile polymers, nylon and others, while other plastic materials such as polystyrene and polyethylene are inexpensive, but do not have sufficient properties such as gas barrier or gas barrier properties. In many cases, the material having the desired properties for a given purpose is not directly compatible with the material from which the main body of the container is to be made, and therefore requires an additional layer between it and the main body of the container, which layer is compatible with both.
Det vil således ses, at hylstrene kan konstrueres som laminater eller emner bestående af mange lag, for at 15 kunne opfylde en mangfoldighed af krav, der stilles enten af den færdige genstands fremstillingsproces eller til selve den færdige genstand.Thus, it will be seen that the sheaths can be constructed as laminates or multi-layered items to meet a variety of requirements imposed either by the finished article's manufacturing process or by the finished article itself.
Når man skal kunne stole på, at det materiale, hvoraf hylsteret dannes, kan udgøre en barriere mod gas-20 gennemtrængning eller et opløselighedsspærrelag i den færdige beholder, er det vigtigt at vide, om det materiale, man således stoler på, virkelig er til stede i hele det område, der skal beskyttes. For at muliggøre kontrol af den færdige genstand i overensstemmelse med dette krav, 23 kan man fremstille hylsteret af et materiale, som har en farve, der afviger fra farven af det materiale, som indsprøjtes omkring hylsteret, idet sidstnævnte desuden kan gøres transparent eller lysgennemtrængeligt. På denne måde kan enhver diskontinuitet i det beskyttende hylster-30 materiale let konstateres i den færdige genstand ved optisk kontrol.In order to be able to trust that the material from which the sheath is formed may constitute a barrier to gas penetration or a solubility barrier layer in the finished container, it is important to know whether the material thus relied upon is really for present throughout the area to be protected. To enable checking of the finished article in accordance with this claim, 23, the casing may be made of a material which has a color which differs from the color of the material injected around the casing, the latter being capable of being made transparent or permeable. In this way, any discontinuity of the protective casing material can easily be detected in the finished article by optical control.
Alternativt kan de to materialer bringes til at afvige fra hinanden med hensyn til stråletransmissionsegenskaber, f.eks. overfor ultraviolet stråling, og den 35 tilsvarende kontrol kan da udføres ved kendte metoder til konstatering af den relative strålingsintensitet.Alternatively, the two materials may be made to differ from each other in terms of beam transmission characteristics, e.g. against ultraviolet radiation, and the corresponding control can then be performed by known methods for determining the relative radiation intensity.
OISLAND
11 14741711 147417
Hylstrene kan kontrolleres forud for den i fig. 2 viste støbeoperation ved gængse metoder.The casings may be checked prior to the casing of FIG. 2 by conventional methods.
Det er også muligt at fremstille færdige genstande med et tiltrækkende udseende ved at tilvejebringe 5 forskellige farver og afvigende grader af gennemsigtighed i hylsteret og i det materiale, som indsprøjtes omkring det.It is also possible to produce finished objects with an attractive appearance by providing 5 different colors and varying degrees of transparency in the case and in the material injected around it.
I almindelighed er den beholder, som skal fremstilles, forsynet med et kontinuerligt lag over hele den 10 indvendige overflade. Imidlertid skal undertiden visse afsnit af beholderen være uden et sådant lag. I sådanne tilfælde fremstilles hylsteret med det tilsvarende vægareal udeladt.In general, the container to be manufactured is provided with a continuous layer over the entire interior surface. However, sometimes certain sections of the container must be without such a layer. In such cases, the sheath is made with the corresponding wall area omitted.
I andre tilfælde ønskes det at lade indvendige lag 15 dække områder hvori der er en åbning i beholderen, f.eks. ved en udtømningsåbning, således at indholdet holdes forseglet, indtil beholderen benyttes første gang, f.eks. under et lukke i en pulverbeholder med en sigteåbning.In other cases, it is desired to cover inner layers 15 with areas in which there is an opening in the container, e.g. at a discharge opening so that the contents are sealed until the container is first used, e.g. under a closure in a powder container with a sieve opening.
Sådanne beholdere kan fremstilles som vist i fig.Such containers may be prepared as shown in FIG.
20 8 ved at anbringe et hylster over hele kernen og blot ind sprøjte plast over udvalgte partier af kernen og derefter blæse det laminerede råemne op i ønsket form til fremstilling af den færdige genstand 17, som har en diskontinuitet 18, der er tildækket med folien 19.20 by applying a sleeve over the entire core and simply injecting plastic over selected portions of the core and then blowing up the laminated blank in desired shape to produce the finished article 17 having a discontinuity 18 covered with the film 19 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK219673A DK131809C (en) | 1970-09-14 | 1973-04-18 | PROCEDURE FOR MAKING A HOLE PLASTIC ITEM |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7173470A | 1970-09-14 | 1970-09-14 | |
US7173470 | 1970-09-14 | ||
US10005070A | 1970-12-21 | 1970-12-21 | |
US10005070 | 1970-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
DK147417B true DK147417B (en) | 1984-07-30 |
DK147417C DK147417C (en) | 1985-02-18 |
Family
ID=26752598
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK448471A DK147417C (en) | 1970-09-14 | 1971-09-13 | HOLE PLASTIC |
DK219773A DK131713C (en) | 1970-09-14 | 1973-04-18 | APPLIANCE FOR MANUFACTURE OF COMPOSITE PLASTIC ITEMS |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK219773A DK131713C (en) | 1970-09-14 | 1973-04-18 | APPLIANCE FOR MANUFACTURE OF COMPOSITE PLASTIC ITEMS |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS5231904B1 (en) |
BE (1) | BE772506A (en) |
CH (2) | CH536704A (en) |
CS (1) | CS173585B2 (en) |
DD (1) | DD94888A5 (en) |
DE (2) | DE2166480C3 (en) |
DK (2) | DK147417C (en) |
ES (3) | ES394887A1 (en) |
FI (1) | FI53795C (en) |
FR (1) | FR2106512B1 (en) |
GB (1) | GB1370141A (en) |
IL (1) | IL37696A (en) |
IT (1) | IT951656B (en) |
NL (1) | NL172418C (en) |
NO (1) | NO132469C (en) |
SE (1) | SE379497B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1035525A (en) * | 1974-03-05 | 1978-08-01 | National Can Corporation | Porous core rod and a process and apparatus for using same |
GB8900082D0 (en) * | 1989-01-04 | 1989-03-01 | Mardon Illingworth | Container |
IT1392940B1 (en) * | 2009-01-27 | 2012-04-02 | Chiari | BARRIER CONTAINER IN PLASTIC MATERIAL |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US35A (en) * | 1836-09-29 | Sliding craitk fob sawmills | ||
DE902C (en) * | 1877-07-31 | A. DE SERRES WlECZFFINSKT, Baudirektor, und A. BATTIC, Ober-Ingenieur, in Wien | Connection between rails, long sleepers and cross sleepers of an iron superstructure for railways | |
US3177278A (en) * | 1959-11-09 | 1965-04-06 | Plastics Inc | Method of forming cup shaped bodies |
US3247550A (en) * | 1962-04-18 | 1966-04-26 | Jr Raymond Haines | Apparatus for molding composite plastic products |
GB1190351A (en) * | 1968-02-26 | 1970-05-06 | Apl Corp | Method and Apparatus for Injection-blow Moulding |
-
1971
- 1971-09-03 CH CH1297771A patent/CH536704A/en not_active IP Right Cessation
- 1971-09-03 CH CH1171472A patent/CH567924A5/xx not_active IP Right Cessation
- 1971-09-06 DE DE712166480A patent/DE2166480C3/en not_active Expired
- 1971-09-06 DE DE2144478A patent/DE2144478C3/en not_active Expired
- 1971-09-08 ES ES394887A patent/ES394887A1/en not_active Expired
- 1971-09-09 SE SE1144671A patent/SE379497B/xx unknown
- 1971-09-10 IT IT5280671A patent/IT951656B/en active
- 1971-09-10 NO NO336971A patent/NO132469C/no unknown
- 1971-09-10 CS CS650871A patent/CS173585B2/cs unknown
- 1971-09-12 IL IL37696A patent/IL37696A/en unknown
- 1971-09-13 GB GB4254471A patent/GB1370141A/en not_active Expired
- 1971-09-13 JP JP7046971A patent/JPS5231904B1/ja active Pending
- 1971-09-13 BE BE772506A patent/BE772506A/en not_active IP Right Cessation
- 1971-09-13 DK DK448471A patent/DK147417C/en not_active IP Right Cessation
- 1971-09-13 DD DD15768871A patent/DD94888A5/xx unknown
- 1971-09-13 NL NL7112576A patent/NL172418C/en not_active IP Right Cessation
- 1971-09-14 FI FI256771A patent/FI53795C/en active
- 1971-09-14 FR FR7133070A patent/FR2106512B1/fr not_active Expired
-
1973
- 1973-04-18 DK DK219773A patent/DK131713C/en active
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1974
- 1974-01-02 ES ES1974199199U patent/ES199199Y/en not_active Expired
- 1974-01-02 ES ES421963A patent/ES421963A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DK147417C (en) | 1985-02-18 |
NO132469C (en) | 1975-11-19 |
FI53795C (en) | 1978-08-10 |
DE2144478C3 (en) | 1975-07-03 |
ES394887A1 (en) | 1974-12-16 |
ES199199Y (en) | 1975-11-16 |
FI53795B (en) | 1978-05-02 |
DE2166480B2 (en) | 1978-02-02 |
FR2106512A1 (en) | 1972-05-05 |
FR2106512B1 (en) | 1974-09-06 |
NL7112576A (en) | 1972-03-16 |
NL172418B (en) | 1983-04-05 |
SE379497B (en) | 1975-10-13 |
CH536704A (en) | 1973-05-15 |
DE2166480C3 (en) | 1979-03-08 |
GB1370141A (en) | 1974-10-09 |
IL37696A0 (en) | 1971-11-29 |
DE2166480A1 (en) | 1974-06-27 |
ES199199U (en) | 1975-07-16 |
BE772506A (en) | 1972-01-17 |
JPS5231904B1 (en) | 1977-08-18 |
DK131713C (en) | 1976-01-26 |
IT951656B (en) | 1973-07-10 |
ES421963A1 (en) | 1976-05-16 |
CH567924A5 (en) | 1975-10-15 |
DK131713B (en) | 1975-08-25 |
DD94888A5 (en) | 1973-01-05 |
CS173585B2 (en) | 1977-02-28 |
DE2144478B2 (en) | 1974-11-07 |
IL37696A (en) | 1974-11-29 |
NL172418C (en) | 1983-09-01 |
DE2144478A1 (en) | 1972-03-23 |
NO132469B (en) | 1975-08-11 |
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PBP | Patent lapsed |