EP1716052A1 - Method for manufacturing plastic packages and can type packages manufactured according to this method - Google Patents

Method for manufacturing plastic packages and can type packages manufactured according to this method

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Publication number
EP1716052A1
EP1716052A1 EP03818844A EP03818844A EP1716052A1 EP 1716052 A1 EP1716052 A1 EP 1716052A1 EP 03818844 A EP03818844 A EP 03818844A EP 03818844 A EP03818844 A EP 03818844A EP 1716052 A1 EP1716052 A1 EP 1716052A1
Authority
EP
European Patent Office
Prior art keywords
packages
pet
blank
beverages
container
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.)
Withdrawn
Application number
EP03818844A
Other languages
German (de)
French (fr)
Inventor
Valko Liubenov Stoilov
Mihail Ianosh Tsonchev
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1716052A1 publication Critical patent/EP1716052A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • 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
    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/16—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material
    • B65D15/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material with end walls made of metal
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
    • B29C49/428—Joining
    • B29C49/42802—Joining a closure or a sealing foil to the article or pincing the opening
    • 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
    • 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
    • B29K2995/0055—Resistive to light
    • 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
    • B29K2995/0077—Yield strength; Tensile strength
    • 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
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • 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
    • 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
    • B29L2031/717—Cans, tins

Definitions

  • the present invention relates to a method for manufacturing plastic packages and can type packages to be used in the food industry for preservation of liquid and viscous food and beverages and especially fizzy and non-fizzy beverages, mineral water, beer, energy stimulating beverages and beverages of low alcohol content meeting the standard requirements for beverages of normal or increased non- perishableness.
  • the method based on a new combination of well-known materials and technological processes in the field of manufacturing packages for beverages guarantees the manufacture of ecological, cheap, light, easily regenerated and standardisable packages.
  • PET polyethylene terephtalate
  • the bottle is the final product representing a body of specific form and having a transition portion and a neck.
  • top pop cans made of granulated PET as a raw material where by extruding the polyethylene material tubular blanks are manufactured from which, after extruding through a die, can bodies with a clip are manufactured to which the top is sealed on a wheel pair cover sealing machine (CN 1253108)
  • the disadvantage of this technology is the manufacture of an expensive tubular blank first and the impossibility to use the package manufactured according to this method for packing products under high pressure, because it is impossible to seal hermetically the top.
  • a blank for cans comprising an elongated tubular side wall defining its longitudinal axis and manufactured of at least one thermoplastic material, said side wall having at least one closed end formed by twisting the said material about its longitudinal axis.
  • a method for manufacturing plastic cans or bottles from continually extruded tubes where a continually extruded tube made of PET and having a determined diameter at its center portion is held at its opposite open ends and rotated while its center portion is heated and its diameter is reduced, then blank ends are counter-rotated until forming a neck at the center position. On the neck thus formed are applied heat and pressure while rotating both opposite ends of the bland in the same direction until cutting the neck and forming a pair of blanks each having a closed end and an open end. Then blank closed ends are sealed by an ultrasonic process. Blank open end is processed so as to form flanges suitable to accept a standard can closure. (WO 0153062)
  • the disadvantage of this method is the complicated and expensive equipment and the impossibility to obtain rapidly and easily precise form and size of the blanks due to the difficulty of controlling the deformation processes as a result of the processing of the tubular blanks by heat, pressure and ultra-sound. Plastic deformations are difficult to control when it is required to achieve accurate linear dimensions.
  • the purpose of the invention was to provide a method for manufacturing plastic packages and cans representing universal, easily regenerated, cheap, ecological and standardisable packages for all types of liquid and viscous food and for beverages on the basis of existing and approved packages at the moment by using technologies approved to that effect, the universal technological equipment available and approved and reliable tested materials.
  • the invention relates substantially to a method for manufacturing plastic packages where their body, a container, is formed from a first blank made of polyethylene terephtalate (PET) to be placed in a mould of a precise form on a blowing machine.
  • PET polyethylene terephtalate
  • a second blank representing a cylindrical body and having a bottom and a closing surface is obtained.
  • This blank is further processed in the area of the closing surface by mechanically cutting it until forming a closing edge, then the container is closed with a standard aluminium closure by pressing.
  • the first blank made of PET contains a special additive and consists of two or more PET layers, each layer having specific quality parameters.
  • the first blank made of PET contains a special additive.
  • the first blank made of PET contains a multi-layer PET material, every layer having specific quality parameters.
  • the present invention relates to the manufacturing of can type packages comprising a body, a container, made of PET of a cylindrical form and of a height from 20 to 400 mm and having a double convex resistant bottom and a standard aluminium closure of a diameter from 50 to 60 mm.
  • the can type package obtained according to the method, subject of this invention has the form of a standard aluminium or metal can closed hermetically with a standard aluminium closure irrespective of the fact that the container is made of a standard plastic material such as PET.
  • the container of the can type package made of PET according to this invention allows to use the package with no problems according to modern law requirements for environmental protection and guarantees the reduction of the consumption of expensive materials such as aluminium or metal used for this type of packages.
  • Can type packages manufactured according to this invention may be used for preservation of a wide range of products and mainly for products of the food industry where the requirements for preservation are exceptionally great thus meeting the requirements for preservation of food according to the modern growing needs for healthy nutrition and being cheap, easily manufactured and transported at the same time.
  • the packages, subject of this invention can be manufactured in such a way as to meet the parameters of size, volume, strength and hygiene required by each user and the requirements for preservation of specific products. This is possible due to the method, subject of this invention, providing for control of the form, size, resistance, colour, weight and materials used for manufacturing a specific package and allowing to optimize the cost at the same time.
  • FIG. 1 - schematic diagram of the method for manufacturing plastic packages according to the invention
  • the first blank 1 to be blown made of PET and selected in advance as per its composition and weight is placed in mould 2 of a specific form (which is not shown in the figures) on a conventional blowing machine 3 where, after hot air processing, the second blank 4 is obtained.
  • the second blank 4 is a finally formed bottle having a body 5, a double convex bottom 6 with reinforcing ribs and a closing surface 7 and is obtained as a result of the blowing of the first blank 1 in mould 2.
  • the second blank 4 thus obtained represents a bottle having a marked transition portion 8 (which is not shown in the figures) and a neck 9 (which is not shown in the figures) and is further processed in the area of its closing surface 7 by mechanical cutting, after having been fixed on the cutting machine 10, until forming the closing edge 11, thus the body, container 12, being finished completely in this way.
  • This container 12 is closed on a conventional closing machine for aluminium or metal can type packages with a standard aluminium closure 13, type 200 or 202, by means of pressing until obtaining a can type package which is namely the final product.
  • composition and weight of blank 1 made of PET are selected in advance depending on the quantity, sizes and requirements for internal pressure, the duration of preservation of the specific product to be packed in the can type package to be manufactured out of the said blank.
  • blank 1 made of PET contains a special additive and consists of double layer PET material, the first layer having been made of pure primary PET and second layer - of regenerated PET, as a result of which the can type package obtained as a final product has a precisely determined colour depending on the additive in blank 1 and precisely determined parameters such as air and sunrays permeability and given strength.
  • a third version blank 1 made of PET is a multi-layer one made of three or more layers of PET of different parameters.
  • a slim can type package is manufactured consisting of a container 11 made of PET and a standard aluminium closure 12 type 200 and having a volume of 176, 250, 330 or 500 ml.
  • a can type package is manufactured consisting of a container 11 made of PET and a standard aluminium closure 12 type 202 and having a volume of 176, 330,500 or 765 ml.
  • Can type packages on the basis of the method according to the present invention may be used for preservation of fizzy beverages, beer, fizzy mineral water, fizzy wines, fizzy beverages of low alcohol content and fizzy energy stimulating beverages.
  • the can type packages may be used for preservation of all kinds of non-fizzy beverages and liquid and viscous foodstuffs.
  • Can type packages consisting of a container 12 made of PET and a standard closure 13 type 200 replace the standard slim cylindrical aluminium cans for energy stimulating beverages representing an aluminium can of 250 ml while maintaining the cylindrical form, the size, the reliability and the method of can closing by substituting the cheap and easily regenerated PET to the expensive aluminium for manufacturing the container.
  • Can type packages consisting of a container 12 made of PET and a standard closure 13 type 202 replace the standard aluminium cans for beer having a volume of 330, 500 and 675 ml while maintaining the cyindrical form, the size, the reliability and the method of can closing by substituting the cheap and easily regenerated PET to the expensive aluminium for manufacturing the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Wrappers (AREA)

Abstract

The present invention relates to a method for manufacturing plastic packages (12) and can type packages with a standard aluminium closure (13) to be used in the food industry for preservation of liquid and viscous food and beverages and especially fizzy and non-fizzy beverages, mineral water, beer, energy stimulating beverages and beverages of low alcohol content meeting the standard requirements for beverages of normal or increased non- perishableness. The method based on a new combination of well-know materials and technological processes in the field of manufacturing packages for beverages guarantees the manufacture of ecological, cheap, light, easily regenerated and standardisable packages.

Description

METHOD FOR MANUFACTURING PLASTIC PACKAGES AND CAN TYPE PACKAGES MANUFACTURED ACCORDING TO THIS METHOD
FIELD OF THE INVENTION
The present invention relates to a method for manufacturing plastic packages and can type packages to be used in the food industry for preservation of liquid and viscous food and beverages and especially fizzy and non-fizzy beverages, mineral water, beer, energy stimulating beverages and beverages of low alcohol content meeting the standard requirements for beverages of normal or increased non- perishableness. The method based on a new combination of well-known materials and technological processes in the field of manufacturing packages for beverages guarantees the manufacture of ecological, cheap, light, easily regenerated and standardisable packages.
PRIOR ART
A method is known for manufacturing packages and especially bottles of polyethylene terephtalate (PET) where a blank made of PET and having a standard form is placed in a mould for a pre-deter ined form of the bottle in a blowing machine and as a result of hot air processing a bottle of a precise form and parameters is manufactured. The bottle is the final product representing a body of specific form and having a transition portion and a neck.
A technology is known for manufacturing top pop cans made of granulated PET as a raw material where by extruding the polyethylene material tubular blanks are manufactured from which, after extruding through a die, can bodies with a clip are manufactured to which the top is sealed on a wheel pair cover sealing machine (CN 1253108)
The disadvantage of this technology is the manufacture of an expensive tubular blank first and the impossibility to use the package manufactured according to this method for packing products under high pressure, because it is impossible to seal hermetically the top.
A blank for cans is known comprising an elongated tubular side wall defining its longitudinal axis and manufactured of at least one thermoplastic material, said side wall having at least one closed end formed by twisting the said material about its longitudinal axis. (WO 0153062)
The disadvantage of this blank is the lack of accurate linear surfaces and sizes and of forming surface resistance to high pressure. A method is known for manufacturing plastic cans or bottles from continually extruded tubes where a continually extruded tube made of PET and having a determined diameter at its center portion is held at its opposite open ends and rotated while its center portion is heated and its diameter is reduced, then blank ends are counter-rotated until forming a neck at the center position. On the neck thus formed are applied heat and pressure while rotating both opposite ends of the bland in the same direction until cutting the neck and forming a pair of blanks each having a closed end and an open end. Then blank closed ends are sealed by an ultrasonic process. Blank open end is processed so as to form flanges suitable to accept a standard can closure. (WO 0153062)
The disadvantage of this method is the complicated and expensive equipment and the impossibility to obtain rapidly and easily precise form and size of the blanks due to the difficulty of controlling the deformation processes as a result of the processing of the tubular blanks by heat, pressure and ultra-sound. Plastic deformations are difficult to control when it is required to achieve accurate linear dimensions.
SUMMARY OF THE INVENTION
The purpose of the invention was to provide a method for manufacturing plastic packages and cans representing universal, easily regenerated, cheap, ecological and standardisable packages for all types of liquid and viscous food and for beverages on the basis of existing and approved packages at the moment by using technologies approved to that effect, the universal technological equipment available and approved and reliable tested materials.
The invention relates substantially to a method for manufacturing plastic packages where their body, a container, is formed from a first blank made of polyethylene terephtalate (PET) to be placed in a mould of a precise form on a blowing machine. As a result of hot air processing a second blank representing a cylindrical body and having a bottom and a closing surface is obtained. This blank is further processed in the area of the closing surface by mechanically cutting it until forming a closing edge, then the container is closed with a standard aluminium closure by pressing. In another version of the invention the first blank made of PET contains a special additive and consists of two or more PET layers, each layer having specific quality parameters.
In a third version of the invention the first blank made of PET contains a special additive.
In a fourth version of the invention the first blank made of PET contains a multi-layer PET material, every layer having specific quality parameters. The present invention relates to the manufacturing of can type packages comprising a body, a container, made of PET of a cylindrical form and of a height from 20 to 400 mm and having a double convex resistant bottom and a standard aluminium closure of a diameter from 50 to 60 mm.
The advantages of the present invention are:
The can type package obtained according to the method, subject of this invention, has the form of a standard aluminium or metal can closed hermetically with a standard aluminium closure irrespective of the fact that the container is made of a standard plastic material such as PET.
The container of the can type package made of PET according to this invention allows to use the package with no problems according to modern law requirements for environmental protection and guarantees the reduction of the consumption of expensive materials such as aluminium or metal used for this type of packages.
Can type packages manufactured according to this invention may be used for preservation of a wide range of products and mainly for products of the food industry where the requirements for preservation are exceptionally great thus meeting the requirements for preservation of food according to the modern growing needs for healthy nutrition and being cheap, easily manufactured and transported at the same time.
The packages, subject of this invention, can be manufactured in such a way as to meet the parameters of size, volume, strength and hygiene required by each user and the requirements for preservation of specific products. This is possible due to the method, subject of this invention, providing for control of the form, size, resistance, colour, weight and materials used for manufacturing a specific package and allowing to optimize the cost at the same time.
In accordance with the method, subject of this invention, are used standard blanks made of all possible varieties of PET allowing to manufacture, on the basis of the technology known at the moment by using the technological equipment available, a new plastic can type package being universal and at the same time quite different from bottles or containers manufactured up-to-now according to this technology.
Light cans from PET with standard aluminium closures are easily manufactured according to this invention and meet the requirements of the standards and norms of every specific market. THE DRAWINGS
Fig. 1 - schematic diagram of the method for manufacturing plastic packages according to the invention
Fig. 2 - axonometric partial cross-section of the second bank used for manufacturing can type packages according to the invention
Fig. 3 - cross-section along the longitudinal axis of the can type package according to the Invention
DETAILED DESCRIPTION
The following examples represent an illustration of the invention without limiting it:
The first blank 1 to be blown made of PET and selected in advance as per its composition and weight is placed in mould 2 of a specific form (which is not shown in the figures) on a conventional blowing machine 3 where, after hot air processing, the second blank 4 is obtained. The second blank 4 is a finally formed bottle having a body 5, a double convex bottom 6 with reinforcing ribs and a closing surface 7 and is obtained as a result of the blowing of the first blank 1 in mould 2. The second blank 4 thus obtained represents a bottle having a marked transition portion 8 (which is not shown in the figures) and a neck 9 (which is not shown in the figures) and is further processed in the area of its closing surface 7 by mechanical cutting, after having been fixed on the cutting machine 10, until forming the closing edge 11, thus the body, container 12, being finished completely in this way. This container 12 is closed on a conventional closing machine for aluminium or metal can type packages with a standard aluminium closure 13, type 200 or 202, by means of pressing until obtaining a can type package which is namely the final product.
The composition and weight of blank 1 made of PET are selected in advance depending on the quantity, sizes and requirements for internal pressure, the duration of preservation of the specific product to be packed in the can type package to be manufactured out of the said blank.
In another version blank 1 made of PET contains a special additive and consists of double layer PET material, the first layer having been made of pure primary PET and second layer - of regenerated PET, as a result of which the can type package obtained as a final product has a precisely determined colour depending on the additive in blank 1 and precisely determined parameters such as air and sunrays permeability and given strength. In a third version blank 1 made of PET is a multi-layer one made of three or more layers of PET of different parameters. As a result of the method according to the present invention a slim can type package is manufactured consisting of a container 11 made of PET and a standard aluminium closure 12 type 200 and having a volume of 176, 250, 330 or 500 ml.
As a result of the method according to the present invention a can type package is manufactured consisting of a container 11 made of PET and a standard aluminium closure 12 type 202 and having a volume of 176, 330,500 or 765 ml.
USE OF THE INVENTION
Can type packages on the basis of the method according to the present invention may be used for preservation of fizzy beverages, beer, fizzy mineral water, fizzy wines, fizzy beverages of low alcohol content and fizzy energy stimulating beverages. In addition the can type packages may be used for preservation of all kinds of non-fizzy beverages and liquid and viscous foodstuffs.
Can type packages, subject of this invention, consisting of a container 12 made of PET and a standard closure 13 type 200 replace the standard slim cylindrical aluminium cans for energy stimulating beverages representing an aluminium can of 250 ml while maintaining the cylindrical form, the size, the reliability and the method of can closing by substituting the cheap and easily regenerated PET to the expensive aluminium for manufacturing the container.
Can type packages, subject of this invention, consisting of a container 12 made of PET and a standard closure 13 type 202 replace the standard aluminium cans for beer having a volume of 330, 500 and 675 ml while maintaining the cyindrical form, the size, the reliability and the method of can closing by substituting the cheap and easily regenerated PET to the expensive aluminium for manufacturing the container.
The applications described above do not limit the types, sizes and application of the can type packages being the subject of the present invention.

Claims

PATENT CLAIMS
1. Method for manufacturing can type packages of which the body, a container, is formed from a first blank made of PET by heat processing, the container being closed with a standard closure and characterized by that the first blank 1 made of PET is preliminarily formed and then placed in mould 2 of a determined form on a blowing machine 3 where as a result of hot air processing a second blank 4 having a durably formed cylindrical body 5, a bottom 6 and a closing surface 7 is obtained, this second blank 4 being further processed in the area of the closing surface 7 by mechanical cutting until forming the closing edge 11, the container thus formed being closed with a standard aluminium closure 13 by means of pressing.
2. Method as per Claim 1 above characterized by that the blank 1 made of PET contains a special additive or/and consists of two or more layers of PET material, each layer having specific quality parameters.
3.Can type package consisting of a body, container, made of PET and a standard closure characterized by that the container 12 is cylindrical and has a double convex bottom 6 and a height of 20 to 40ø mm, and the standard closure 13 of a diameter of 50 to 60 mm is made of aluminium.
EP03818844A 2003-10-15 2003-10-23 Method for manufacturing plastic packages and can type packages manufactured according to this method Withdrawn EP1716052A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG108275A BG108275A (en) 2003-10-15 2003-10-15 METHOD FOR MANUFACTURE OF PLASTIC PACKS AND PACKAGING KEN TYPE ACCORDING TO METHOD
PCT/BG2003/000038 WO2005035377A1 (en) 2003-10-15 2003-10-23 Method for manufacturing plastic packages and can type packages manufactured according to this method

Publications (1)

Publication Number Publication Date
EP1716052A1 true EP1716052A1 (en) 2006-11-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03818844A Withdrawn EP1716052A1 (en) 2003-10-15 2003-10-23 Method for manufacturing plastic packages and can type packages manufactured according to this method

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EP (1) EP1716052A1 (en)
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JP6744869B2 (en) * 2015-11-26 2020-08-19 デル モンテ フィリピン，インコーポレイテッド Canned fruits in plastic cans

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US20010000373A1 (en) * 1999-04-07 2001-04-26 Beck Martin H. Blow molded container with memory shrink closure attachment and method of making the same
EP1080870A2 (en) * 1999-08-31 2001-03-07 Ontro, Inc. Method for forming a hermetic flange seal in a blow-molded plastic container

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WO2005035377A1 (en) 2005-04-21
BG108275A (en) 2005-04-30

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