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WO2007098837A1 - Procede de fabrication de bouteilles extrudees-soufflees en matiere synthetique et bouteilles extrudees-souffflees en matiere synthetique - Google Patents

Procede de fabrication de bouteilles extrudees-soufflees en matiere synthetique et bouteilles extrudees-souffflees en matiere synthetique Download PDF

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Publication number
WO2007098837A1
WO2007098837A1 PCT/EP2007/000718 EP2007000718W WO2007098837A1 WO 2007098837 A1 WO2007098837 A1 WO 2007098837A1 EP 2007000718 W EP2007000718 W EP 2007000718W WO 2007098837 A1 WO2007098837 A1 WO 2007098837A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic
bottle
extrusion
extruded
different
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.)
Ceased
Application number
PCT/EP2007/000718
Other languages
German (de)
English (en)
Inventor
Johann KÜNZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alpla Werke Alwin Lehner GmbH and Co KG
Original Assignee
Alpla Werke Alwin Lehner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpla Werke Alwin Lehner GmbH and Co KG filed Critical Alpla Werke Alwin Lehner GmbH and Co KG
Publication of WO2007098837A1 publication Critical patent/WO2007098837A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04102—Extrusion blow-moulding extruding the material continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/0411—Means for defining the wall or layer thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
    • B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/40—Details of walls
    • 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
    • B65D23/10—Handles
    • B65D23/102—Gripping means formed in the walls, e.g. roughening, cavities, projections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B29C2049/222—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons only parts of the preforms or parisons are layered
    • 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
    • B29C2949/3004—Preforms or parisons made of several components having longitudinally different components within one layer, e.g. tubes with longitudinal stratified layering
    • 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
    • B29C2949/3006—Preforms or parisons made of several components having tangentially different components within one layer, e.g. longitudinal stripes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04116—Extrusion blow-moulding characterised by the die
    • 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
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B29C49/32—Blow-moulding apparatus having movable moulds or mould parts moving "to and fro"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • 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
    • B29L2031/46—Knobs or handles, push-buttons, grips
    • B29L2031/463—Grips, handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0018—Ribs
    • B65D2501/0027—Hollow longitudinal ribs
    • 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
    • B65D2501/00—Containers having bodies formed in one piece
    • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
    • B65D2501/0081—Bottles of non-circular cross-section

Definitions

  • the invention relates to a production method for extrusion blown plastic bottles according to the preamble of claim 1.
  • the invention also relates to plastic bottles produced by the method.
  • plastic containers made of white or stained, glass or ceramic are increasingly being replaced by plastic containers.
  • plastic containers are used for the packaging of fluid substances, such as beverages, household products, care products, cosmetics, etc.
  • the low weight and the lower costs certainly play a significant role in this substitution.
  • the use of recyclable plastic materials and the generally more favorable overall energy balance during their production also contribute to promoting consumer acceptance of plastic containers, in particular plastic bottles.
  • plastic bottles for example of polyethylene or polypropylene
  • an extrusion blow molding process in particular in a tubular blowing process.
  • a plastic tube is extruded from an extruder head, introduced into a Blasformwerkmaschinean für für nik, inflated via a mandrel by overpressure and cured.
  • the extrusion blow molding machines used for this purpose generally have at least one extruder for feeding the plastic material.
  • the outlet of the extruder is connected to the extruder head, at the outlet opening of which is preferably adjustable in the opening width, the extruded tube emerges.
  • the extrusion of the plastic tube can be continuous or quasi-continuous.
  • the plastic hose can be extruded in one or more layers, it can be extruded with visible strips, decor strips or, with respect to the circumference, with a plurality of, for example different, segments.
  • the extruded tube is transferred to a blow mold assembly and inflated by overpressure by means of a blow mandrel retracted into the mold cavity. Thereafter, the inflated according to the mold cavity plastic bottle is removed from the mold cavity.
  • Extrusion-blown plastic bottles are already known from the prior art, which have differently colored areas and / or are provided with longitudinally extending decorative strips. The color graduated areas or stripes generally have no technical function and serve only to change the appearance of the plastic bottle.
  • the contrasting areas or strips have a relatively long transition region, in which the base color merges into the color-contrasting region or changes from this back to the base color. Sometimes this effect may be intended; however, it is usually visually less appealing and does not achieve the desired effect. These transitions with the conventional production methods over a long distance are also the reason why currently plastic bottles, in which the contrasting areas and / or striped areas have a technical function, are not used.
  • DE-A-3718 605 already discloses a method for producing hollow plastic articles made of different materials, in which the supply of the different materials can be controlled via a mandrel that can be adjusted axially in the extrusion die. In the axial adjustment of the mandrel, however, the gap width of the extrusion nozzle also always changes in some areas. This fact makes it difficult to produce plastic articles with regions of different materials in the adjacent areas with constant wall thicknesses.
  • the process described in DE-A-3718605 is suitable for the manufacture of components of the car interiors such as e.g.
  • a method for area wise coating of a cheaper material consisting carrier part with a higher quality material is known.
  • a pre-hose is extruded from the carrier material via a first extrusion device.
  • the pre-hose is guided in a mold.
  • the coating material is applied to the previously formed carrier material.
  • the method can be used for example for the partial sheathing of pipes and the like. For the production of plastic bottles, the method described is not suitable.
  • the object of the present invention is to modify an extrusion process for plastic bottles in such a way that they can be provided, to the desired extent, with ring-shaped or strip-shaped regions which are different from the rest of the plastic bottle.
  • the areas should be able to be created in a different color and / or have different mechanical and / or surface properties. Long transition regions of the different materials or the differently colored plastics should be avoided.
  • the different areas of the other plastic bottle should have the same wall thickness, as the adjoining sections. In this way, not only visually appealing plastic bottles should be produced, but it should also be produced plastic bottles with areas that have a specific technical function, without affecting the overall rigidity of the plastic bottle.
  • the object of the invention is furthermore to produce such extrusion-blown plastic bottles with areas or strips of a material deviating from the rest of the bottle material, which also serve a technical purpose.
  • the solution to these problems consists in a method which has the method steps mentioned in the characterizing portion of claim 1. Further developments and / or advantageous embodiments of the invention are the subject of the dependent method claims. Extrusion blown plastic bottles, whose formation with strips serves a technical purpose are the subject of the device claims.
  • a plastic tube is extruded in one or more layers through an extrusion nozzle of an extruder head which is adjustable in terms of its width.
  • One or more portions of the plastic tubing are provided with one or more axially extending portions whose material is of a different plastic composition or color than the remainder of the plastic tubing.
  • the extruded plastic tube is introduced into a mold cavity of a blow mold and inflated by overpressure according to the mold cavity to a plastic bottle.
  • the inventive method is characterized in that the plastic material for the other plastic hose different area the extruded plastic tube at a distance of 0.5 mm to 3 mm in front of the exit slit of the extrusion die the extruded plastic tube is metered, and the wall thickness of the extruded plastic tube in metered area corresponds to the wall thickness of the plastic tube in the adjacent areas.
  • the plastic material is metered in almost immediately before the exit slit of the extrusion die, very short transitions from the tubing to the different areas and vice versa can be realized.
  • the axial length of the transitions is only about 2 mm to about 10 mm.
  • a color transition from black to white is feasible.
  • the reason for the short transitions is that the plastic material in the extruder head only has to be transported over relatively short distances. This allows the channels over which the plastic material is metered to be cleaned in a much shorter period of time and recharged with the original tubing.
  • the plastic material used to create the regions other than the rest of the tubing can displace the original tubing much more quickly and provide the extreme traditional plastic tube are dosed.
  • the possibility remains to create by lower metering pressures and longer transitions, especially color transitions.
  • the process control is designed such that the extruded plastic tube in the areas with the metered plastic material has the same wall thickness as in the adjoining areas. This ensures that the desired properties in the dosed areas depend solely on the type of dosed material.
  • the overall properties of the plastic bottle produced by the process according to the invention are not impaired by unwanted wall thickening.
  • the total amount of material used per plastic bottle is kept essentially the same.
  • plastic tube is expediently extruded continuously, it proves to be advantageous for the creation of transitions that are as short as possible if the plastic material for the areas to be created is metered in time from a buffer in the extruder head.
  • the use of a buffer allows even shorter channel lengths, in which the plastic material for creating the different areas under displacement of the tubing are introduced or from which it must be displaced again.
  • a very expedient process variant provides that the plastic material for the regions to be created is temporarily stored in an annular space which is arranged in a section of a nozzle body which surrounds a height-adjustable mandrel with a cone-shaped, shallow-shaped enlargement. Only when required is the plastic material from the annular space metered in through one or more outlet openings, which communicate with the annular space.
  • a plastic material that is metered to create the different areas for example, a plastic material is selected, which in the polymerized state of the material of the other extruded plastic tube different mechanical properties and / or surface properties, in particular a greater roughness.
  • This variant of the method proves to be particularly advantageous for creating special gripping areas on the plastic bottles. While the bottle generally has as smooth a surface as possible, it is in the gripping area with a larger Provided roughness. As a result, it can be much better grasped and held by the user and he has a significantly improved slip resistance.
  • a plastic material with greater roughness and a plastic material can be added, which has a certain tack in the polymerized state.
  • the metered-in plastic material can also have a higher or lower strength than the remaining hose material. As a result, bottles with selectively reinforced or weakened areas can be produced if required.
  • the metered plastic material has a color different from the color of the remaining plastic tube, it is easier for the user, for example, to better clarify the arrangement of the gripping area.
  • This measure can be provided alternatively or cumulatively to the arrangement of one or more areas with a greater roughness.
  • the material for the color of the metered plastic material is metered into a temporary storage just before the introduction of the plastic material.
  • the color transitions can be kept very short.
  • the metered plastic materials are conveniently chosen from the plastic group containing polyolefins and mixtures thereof, thermoplastic PE, HDPE, LDPE or blowable PET.
  • the cited materials are very good extrudable and generally good combined with each other. It is understood, however, that the choice of the metered plastic material is highly dependent on the base material of the extruded plastic tube.
  • a variant of the method provides that over the axial length of the extruded plastic tube, a plurality of deviating from the rest of the tubing areas are created, which are axially spaced from each other.
  • the area with the Mün- fertil the later bottle and the area merging into the ground are formed differently.
  • the one or more areas may be annularly formed circumferentially, they can also be arranged distributed in strips over the circumference of the plastic tube.
  • the strip-shaped areas are parallel to each other.
  • the Stripes- shaped areas can be made at least partially with mutually different colors.
  • the plastic tube can be extruded one or more layers.
  • the plastic tube is extruded at least two layers.
  • the layer with the mill regenerate is arranged inside the outer layer of the extruded plastic tube.
  • the plastic tube can also have more layers, for example six layers, and in addition be provided with surface-layered color layers. It proves to be advantageous if the plastic hose is at least partially formed multi-layered and in particular in the differently colored areas having a substantially neutral white base layer. This base layer is closer to the bottle interior than the colored material layer. In this way, a defined coloration of the colored areas can be guaranteed even when using mill regenerate, which may have color variations.
  • An inventive extrusion-blown plastic bottle is provided in one or more sections with at least one axially extending portion which differs from the rest of the bottle material.
  • the at least one region has different mechanical properties and / or surface properties from the remaining bottle.
  • the so extrusion-blown plastic bottles have by the different areas, for example, increased or reduced strengths.
  • the elasticity can be selectively controlled in the circumferential direction.
  • the portion of the bottle in which a label is subsequently applied have a greater strength. This facilitates the placement of a label.
  • the bottle may have a greater elasticity in a certain portion of its extension and / or its circumference, for example to allow for targeted hot deformations, etc.
  • a variant of the extrusion-blown plastic bottle provides that the at least one different area has a greater roughness than the material of the others Bottle. Instead of a larger roughness, the area may also have some stickiness.
  • the at least one different area is arranged in a suitable execution variant of the plastic bottle in a gripping section, for example in order to reinforce it there or to make it more tangible and durable for the user due to increased roughness or some stickiness.
  • the gripping portion may be provided on the body of the bottle.
  • this equipped with the area other than the rest of the bottle material area it is advantageous that this equipped with the area other than the rest of the bottle material area. Again, an increased roughness or some stickiness of the different area facilitates the slip resistance when gripping and holding the plastic bottle.
  • extrusion-blown plastic bottle has several areas which are different from the other container material. These can be axially spaced from each other and / or arranged in a strip shape distributed over the circumference of the bottle. The different areas may be provided on a gripping portion in the body part of the plastic bottle or also be arranged above and below the gripping portion. As an alternative or in addition to the mechanical properties and / or surface properties that differ from the rest of the bottle, the annular or strip-like regions may also have a different color from the rest of the container. In this way, the user is for example signaled where the plastic bottle is best to take. In strip-like areas, the stripes may even be colored differently.
  • the areas other than the rest of the container material advantageously have a course length in the axial direction which is approximately 2 mm to approximately 10 mm.
  • the areas of different mechanical properties and / or surface properties are located relatively accurately on the container. Long transition areas with indefinable mixing properties are thus avoided.
  • the extrusion blown plastic bottle can be constructed in one or more layers.
  • it has a multilayer wall of at least two layers.
  • a plastic layer arranged within the outer layer may also comprise mill regenerate material.
  • the use of mill regenerate material is advantageous for cost reasons and moreover takes account of environmental aspects.
  • FIG. 1 shows a schematic representation of an extrusion blow molding machine with extruder head and blow molding device
  • FIG. 2 is a schematic sectional view of a part of the extruder head with an extrusion nozzle
  • Fig. 3 - Fig. 6 are schematic representations of exemplary embodiments of provided with axially striped areas plastic bottles.
  • the extrusion blow molding machine of the prior art which is shown in principle in FIG. 1, is provided overall with the reference number 1.
  • the construction of such long-stroke extrusion blow molding machines is well known and is described, for example, in "Blow molding handbook, edited by Donald V. Rosato and Dominick V. Rosato, 1989, ISBN 1-56990-089-2, Library of Congress Catalog Number 88-016270" described.
  • the illustration in FIG. 1 is therefore limited to the components of the extrusion blow molding machine 1 that are absolutely necessary for the understanding.
  • the two-station blow molding machine illustrated has, for example, an extrusion unit 2 and two blowing stations 12, 13.
  • the extrusion unit 2 comprises at least one extruder 3 for plastic granules and an extruder head 4 connected thereto, which has at least one extrusion die 5.
  • the blowing stations 12, 13 each have a blowing head with a blowing mandrel.
  • Each blast station 12, 13 is equipped with a blow molding table 14, 15 in which blow molds 6 are mounted.
  • the blow molding tools 6 each enclose a blow mold cavity 7, which corresponds to the shape of the hollow body to be produced, for example a bottle.
  • the blow molding cavities 7 have an opening 8 on their upper side facing the extruder head 4.
  • blow molding tables 14, 15 are alternately from their lateral end positions in FIG the blowing stations 12, 13 displaceable in a position in which the mouth of the blow molding tool 6 with the exit of the extrusion die 5 axially aligned.
  • the lateral displacement of the blow molding tables 14, 15 takes place substantially perpendicular to the longitudinal extension of the extruder 3 and is indicated in FIG. 1 by double arrows H.
  • the supplied via the extruder 3 plastic granules is melted in the extruder 3 and / or in the extruder head 4 and extruded from the extrusion die 5 as an endless plastic tube.
  • the plastic tube can be extruded one or more layers.
  • For the extrusion of a multilayer plastic hose further extru are provided which transport the required different plastic materials to the extruder head 4.
  • the blow molding tables 14, 15 with the blow molding tools 6 are moved alternately from their end positions in the blowing stations 12, 13 laterally under the extruder head 4, the blow molds 6 are opened and a piece of extruded plastic tube picked. Thereafter, the respective blow molding table 14, 15 is moved back again into its end position in the blowing station 12 or 13.
  • the hollow body is then inflated by means of a retracted through the mouth 8 in the cavity 7 mandrel.
  • the finished hollow body is ejected and the cycle repeated.
  • the blow molding table 15 of the second blowing station 13 is moved laterally under the extruder head 4 to pick up another piece of the extruded plastic hose. In this way, a continuous operation is possible.
  • the extrusion die 5 comprises a nozzle body 51 in whose central extrusion channel 41 a coaxially arranged mandrel 52 with a cone - truncated extension 53 is guided height adjustable.
  • the nozzle body 51 and the mandrel 52 are preferably replaceably mounted in the extruder head 4.
  • the width of the exit slit 54 of the extrusion die 5 is adjustable to vary the thickness of the extruded plastic tube, if necessary.
  • annular space 55 is recessed, which can be fed via a feed channel 56 with molten plastic material.
  • the annular space 55 is above or a plurality of outlet openings 57 with the central extrusion channel 41 in connection.
  • the outlet opening 57 may be formed as an annular gap. It can also be provided a plurality of outlet openings 57, which are arranged annularly around the mandrel 52.
  • the outlet openings 57 are arranged in the immediate vicinity of the outlet gap 54 of the extrusion die 5.
  • the distance of the outlet openings 57 from the outlet gap 54 of the extrusion die 5 is preferably about 0.5 mm to about 3 mm.
  • the material for the single-layer or multi-layered tube extruded at the outlet gap 54 of the extrusion die 5 is preferably conveyed continuously through the central extrusion channel 41.
  • the material which is usually initially in granular form, fed into an extruder, liquefied and transported to the extruder head.
  • the material for a multilayer extrusion usually several extruders are provided, which transport the material in the liquefied state to the extruder head.
  • Substantially annular feed openings for the various layers open into the central extrusion channel 41 in succession.
  • the at least one outlet opening 57 communicating with the annular space 55 serves to produce ring-shaped regions extending in the axial direction with mechanical properties and / or surface properties which differ from the rest of the tube material. If a plurality of outlet openings 57 are provided, strip-shaped regions extending in the axial direction and distributed over the circumference of the extruded plastic tube can be created. While the plastic tube is preferably extruded continuously, the application of the plastic material for the annular circumferential or strip-like regions is timed from a temporary store in the extruder head 4. In the illustrated embodiment, the annular space 55 forms this intermediate store. The annular space 55 may also be formed segmented. In this way, different areas can be created over the circumference of the extruded plastic tube.
  • the plastic material for the strip-shaped regions is fed to the extruder head 4 via an extruder and conveyed via the supply passage 56 in the annular space 55, the outlet openings 57 open into the central extrusion channel 41.
  • the number of outlet openings 57 corresponds to the number of strip-shaped areas to be created.
  • the width of the exit openings 57 measured in the circumferential direction of the extrusion nozzle 5 determines the width of the strip-shaped areas.
  • a plastic material is selected which has a different composition and / or a different color than the base material for the extruded plastic tube.
  • the strip-shaped regions should have different mechanical properties and / or surface properties than the rest of the extruded from the extruded plastic tube container.
  • polyolefins or mixtures of polyolefins, thermoplastic PE, HDPE, LDPE or blowable PET are suitable as plastic material for the production of the strip-shaped regions.
  • the strip-shaped regions are to have a different color than the remaining extruded plastic tube, then the usually liquid coloring material is not introduced into the supply channel 56 until shortly before entry into the annular space 55. In the case of a segmented annular space 55, different colors can be added to each segment. In this way, the extruded plastic tube can be provided with strip-shaped areas, which have different colors from each other.
  • FIGS. 3-6 show examples of plastic bottles each having the reference numeral 70 and having one or more strip-shaped regions 71.
  • a single strip-shaped area 71 is provided, which is provided substantially in the area of a bottle handle 72.
  • the strip-shaped region 71 has a deviating from the other plastic bottle 70, in particular larger roughness. As a result, the slip resistance is improved. The user can grasp the plastic bottle better and keep it safer.
  • a different color than the remaining plastic bottle 70 is provided to better illustrate the strip-shaped region 71.
  • the bottle grip 72 engaging strip-shaped portion 71 may also have the same color as the rest of the plastic bottle 70th .
  • a plurality of strip-shaped portions 71 are provided which are substantially parallel to each other and in a gripping portion 72 of the bottle are arranged.
  • the strip-shaped areas 71 have a different color from the rest of the container 70 to signal the user the gripping portion 72 of the plastic bottle 70.
  • the strip-shaped regions 71 in the gripping section 72 for example, in turn have a greater roughness than the rest of the bottle 70.
  • the strip-shaped regions 71 may also have a greater strength than the remaining plastic bottle 70, so that it can be better grasped and the gripping portion 72 is not excessive deformed.
  • sections 73, 74 with a plurality of strip-shaped regions 71 extending in parallel are provided above and below a gripping section 72 of the bottle.
  • the strip-shaped areas 71 have a different color from the rest of the plastic bottle and the user example, the between the two sections 73, 74 with strip-shaped areas 71 located gripping portion 72 of the bottle 70 indicate. In this embodiment, the different colors suffice to achieve the intended effect.
  • the strip-shaped regions 71 can also have different mechanical properties or surface properties from the remaining container material.
  • the extrusion-blown plastic bottles shown in FIGS. 3 to 6, for example, are each provided with strip-shaped regions. It is understood that the regions with different material properties can also be annular. In this case, the plastic bottle can be equipped with only one annular area or also have a plurality of axially spaced annular areas.
  • the inventive method allows the production of annular or strip-shaped areas with relatively short axial transitions from the plastic material of the extruded tube to the plastic material of different areas and vice versa.
  • the axial length of the transitions is about 2 mm to about 10 mm.
  • color transitions from black to To achieve white are typically made.
  • the inventive method can be used in conjunction with single or multi-layer extruded plastic tubing.
  • the plastic tube is extruded in a multi-layered manner with at least 2 layers, wherein a plastic layer arranged within the outer layer comprises mill regenerate material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication de bouteilles (70) en matière synthétique dans un procédé d'extrusion-soufflage. Dans ce procédé, un manchon flexible en matière synthétique en une ou plusieurs couches est extrudé par la tuyère d'extrusion (5) de largeur ajustable d'une tête d'extrudeuse (4). Une ou plusieurs parties du manchon flexible en matière synthétique sont dotées d'une ou plusieurs zones (71) qui s'étendent dans la direction axiale, différentes du reste du manchon flexible en matière synthétique et dont le matériau a une autre composition de matière synthétique ou une autre couleur que le reste du manchon flexible en matière synthétique. Le manchon flexible en matière synthétique extrudé est placé dans la cavité (7) du moule d'un système (1) de soufflage-formage et est soufflé sous surpression en une bouteille en matière synthétique dont la forme correspond à celle de la cavité du moule. Le procédé selon l'invention est caractérisé en ce que le matériau synthétique prévu pour la zone différente du reste du manchon flexible en matière synthétique est ajouté au manchon flexible en matière synthétique extrudé à une distance de 0,5 mm à 3 mm en amont de l'interstice de sortie (54) de la tuyère d'extrusion (5) et en ce que dans la zone de l'addition, l'épaisseur de la paroi du manchon flexible extrudé en matière synthétique correspond à l'épaisseur de la paroi du manchon flexible en matière synthétique dans les zones adjacentes.
PCT/EP2007/000718 2006-02-27 2007-01-27 Procede de fabrication de bouteilles extrudees-soufflees en matiere synthetique et bouteilles extrudees-souffflees en matiere synthetique Ceased WO2007098837A1 (fr)

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WO2009141027A1 (fr) * 2008-05-21 2009-11-26 Alpla Werke Alwin Lehner Gmbh & Co. Kg Procédé d'extrusion-soufflage pour récipients en matière plastique, en particulier pour bouteilles en matière plastique
WO2019051051A1 (fr) * 2017-09-08 2019-03-14 Graham Packaging Company, L.P. Traitement additif vertical pour machine de moulage par soufflage
JPWO2018207844A1 (ja) * 2017-05-10 2020-03-12 日精エー・エス・ビー機械株式会社 把手付き容器
CN113661037A (zh) * 2019-04-11 2021-11-16 宝洁公司 具有视觉效果的吹塑制品
US11724847B2 (en) 2018-10-19 2023-08-15 The Procter & Gamble Company Blow molded article with debossing
US11814208B2 (en) 2018-07-17 2023-11-14 The Procter & Gamble Company Blow molded article with visual effects
US11975522B2 (en) 2020-01-08 2024-05-07 The Procter & Gamble Company Blow molded multilayer article with color gradient
US12077339B2 (en) 2017-10-12 2024-09-03 The Procter & Gamble Company Blow molded article with visual effects
IT202300022614A1 (it) * 2023-10-27 2025-04-27 Brev Angela Srl Testa di estrusione di un tubo in parison per la realizzazione di contenitori di liquido dotati di zone con diverse proprietà e caratteristiche.

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Publication number Priority date Publication date Assignee Title
WO2009141027A1 (fr) * 2008-05-21 2009-11-26 Alpla Werke Alwin Lehner Gmbh & Co. Kg Procédé d'extrusion-soufflage pour récipients en matière plastique, en particulier pour bouteilles en matière plastique
US20110062610A1 (en) * 2008-05-21 2011-03-17 Alpla Werke Alwin Lehner Gmbh & Co. Kg Extrusion blow molding method for plastic containers, especially plastic bottles
US9138930B2 (en) 2008-05-21 2015-09-22 Alpla Werke Alwin Lehner Gmbh & Co. Kg Extrusion blow molding method for plastic containers, especially plastic bottles
JP7106530B2 (ja) 2017-05-10 2022-07-26 日精エー・エス・ビー機械株式会社 把手付き容器
US11718448B2 (en) 2017-05-10 2023-08-08 Nissei Asb Machine Co., Ltd. Handle-equipped container
EP3623304A4 (fr) * 2017-05-10 2021-02-24 Nissei Asb Machine Co., Ltd. Récipient équipé d'une poignée
JPWO2018207844A1 (ja) * 2017-05-10 2020-03-12 日精エー・エス・ビー機械株式会社 把手付き容器
US11040475B2 (en) 2017-09-08 2021-06-22 Graham Packaging Company, L.P. Vertically added processing for blow molding machine
WO2019051051A1 (fr) * 2017-09-08 2019-03-14 Graham Packaging Company, L.P. Traitement additif vertical pour machine de moulage par soufflage
US12077339B2 (en) 2017-10-12 2024-09-03 The Procter & Gamble Company Blow molded article with visual effects
US11814208B2 (en) 2018-07-17 2023-11-14 The Procter & Gamble Company Blow molded article with visual effects
US11724847B2 (en) 2018-10-19 2023-08-15 The Procter & Gamble Company Blow molded article with debossing
CN113661037B (zh) * 2019-04-11 2023-10-13 宝洁公司 具有视觉效果的吹塑制品
US11667069B2 (en) 2019-04-11 2023-06-06 The Procter & Gamble Company Blow molded article with visual effects
CN113661037A (zh) * 2019-04-11 2021-11-16 宝洁公司 具有视觉效果的吹塑制品
US11975522B2 (en) 2020-01-08 2024-05-07 The Procter & Gamble Company Blow molded multilayer article with color gradient
IT202300022614A1 (it) * 2023-10-27 2025-04-27 Brev Angela Srl Testa di estrusione di un tubo in parison per la realizzazione di contenitori di liquido dotati di zone con diverse proprietà e caratteristiche.
WO2025088655A1 (fr) * 2023-10-27 2025-05-01 Brevetti Angela S.R.L. Tête d'extrusion pour l'extrusion d'une paraison tubulaire pour produire des contenants de liquides équipés de zones aux propriétés et caracteristiques différentes

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