EP1939094A1 - Verfahren zur Herstellung eines Behälters für gießbare Produkte - Google Patents

Verfahren zur Herstellung eines Behälters für gießbare Produkte Download PDF

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Publication number
EP1939094A1
EP1939094A1 EP06425887A EP06425887A EP1939094A1 EP 1939094 A1 EP1939094 A1 EP 1939094A1 EP 06425887 A EP06425887 A EP 06425887A EP 06425887 A EP06425887 A EP 06425887A EP 1939094 A1 EP1939094 A1 EP 1939094A1
Authority
EP
European Patent Office
Prior art keywords
layer
polyethylene
sheet
container
phase
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Withdrawn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
EP06425887A
Other languages
English (en)
French (fr)
Inventor
Stefano Gabrielli
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.)
Ipi SRL
Original Assignee
Ipi SRL
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 Ipi SRL filed Critical Ipi SRL
Priority to EP06425887A priority Critical patent/EP1939094A1/de
Publication of EP1939094A1 publication Critical patent/EP1939094A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/811—Applying strips, strings, laces or ornamental edgings to formed boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/814—Applying closure elements to blanks, webs or boxes

Definitions

  • the present invention concerns a method for making (i.e. manufacturing) a container for pourable products, specifically alimentary ones, of the type including a breakable portion to be removed by hand before being able to pour the product contained therein.
  • the method under discussion finds application in those containers, preferably aseptic, which are made from a multilayer material comprising at least one cardboard layer, able to give rigidity to the container itself, and at least one layer in polyethylene, arranged in contact with the pourable product enclosed inside the container and able to guarantee fluid sealing of the same container, and which has at least one breakable portion added after the lamination of the multilayer material, shaped to be removed thanks to a tab placed on the outside of the container.
  • a multilayer material comprising at least one cardboard layer, able to give rigidity to the container itself, and at least one layer in polyethylene, arranged in contact with the pourable product enclosed inside the container and able to guarantee fluid sealing of the same container, and which has at least one breakable portion added after the lamination of the multilayer material, shaped to be removed thanks to a tab placed on the outside of the container.
  • the multilayer material can have further sheet-like layers in addition to the two described above, such as, for example, a further layer of aluminium arranged between the layer in polyethylene and that in cardboard, and further layers of polyethylene arranged between the various layers of aluminium, cardboard and polyethylene, able to guarantee better preservation of the product inside the container or better coupling between the layers.
  • the breakable portion is made inside the packing machine by the complete perforation of the multilayer material and the application, on both the inner and outer sides of the multilayer material, of two tabs, respectively in polyethylene for the tab in contact with the pourable product when the container is closed and in a plastic material, preferably polyethylene, but also in a multilayer material containing aluminium and polyethylene and/or polypropylene or other similar materials, for the tab that is on the outer side when the container is closed.
  • the second tab is used to drag the first tab with it and thus remove it from the container.
  • a container for pourable products of the type with a "pull-tab" opening is described that, in correspondence to the breakable portion, has two tabs, a more internal one and a more external one, able to seal the portion removed in the previous phase of perforation of the multilayer material.
  • the two tabs are heat sealed together via a thermal welding device that allows the most suitable temperature to be reached for obtaining a durable coupling between the two tabs.
  • the user tears off the outer tab, thereby also pulling away the inner one, so that it is possible to pour product held inside the container.
  • the first tab the one that is coupled to the innermost layer of the container, even if it theoretically covers and seals the portion removed during perforation, as it is substantially made of a filler material added to the multilayer material, it has all the problems related to the technological process of welding plastic materials: namely, incomplete adhesion between the parts, the existence of fractures or material gaps in the tab itself, etc. Therefore, if there are welding problems, even minor ones, the container is no longer aseptic and the pourable product it contains runs the risk of deteriorating in a short time.
  • the object of the present invention is to increase the level of sterility of containers for pourable products of the type having at least one breakable portion removable via an external tab, of the pull-tab type, and to simplify the sterilization phase of the multilayer material inside the packing machines.
  • a further object of the present invention is to accelerate the production process of containers inside the packing machines, eliminating the multilayer material perforation phase for forming the breakable portion to be removed.
  • the present method for making a container in a multilayer material for pourable products having at least one breakable portion suitable for being removed before pouring said pourable product out of said container including the phases of: coupling at least one sheet-like layer in cardboard to at least one sheet-like layer in polyethylene, or a similar material, to form said multilayer material, erecting (i.e.
  • said multilayer material to form said container, said at least one cardboard layer being arranged on the outer side of the said container, characterized in that the coupling phase of at least one sheet-like layer in cardboard to at least one sheet-like layer in polyethylene, or similar material, is preceded by the phase of perforation of said at least one sheet-like layer in cardboard in correspondence to said at least one breakable portion and that the phase of erecting said container is preceded by the phase of integrally coupling at least part of a removable sheet-like body to said at least one layer in polyethylene, in correspondence to said at least one breakable portion on the outer side of said multilayer material, as defined above.
  • this removable sheet-like body being integral with the innermost layer in polyethylene, is therefore set up to remove at least a portion of this polyethylene layer in correspondence to the aforementioned at least one breakable portion.
  • breakable portion assumes the meaning of a portion of the multilayer material that it is understood must be broken to allow usage of the container by the end user.
  • the wording "inner side” and “outer side” refer respectively to the side of the multilayer material that will find itself on the inside or the outside of the container for pourable products, once it has been erected.
  • the multilayer material can be introduced inside the packing machine already fitted with a breakable portion including, in correspondence to this, the inner layer in polyethylene devoid of the relative portion of the outer cardboard layer.
  • the multilayer material does not undergo any process of perforation and, in consequence, any process of further addition of filler material, with relative welding, to cover and seal the portion of material removed during perforation.
  • the inner surface of the multilayer material is in fact continuous, thereby permitting complete protection of the inner side of the multilayer material with respect to the outer one.
  • the aforementioned removable sheet-like body is applied to the polyethylene layer, this body preferably consisting of an additional layer, or a tab, in a plastic material, arranged in correspondence to the breakable portion, on the outer side of the multilayer material, namely the side in which the cardboard layer is present.
  • this plastic tab is heat sealed to said polyethylene layer at a temperature between 200 and 400 °C, which is maintained for a period of time ranging from 0.1 to 0.5 s.
  • this heat-sealing must bring the two heat sealed layers, namely that in polyethylene and that of the tab in a plastic material, such as, for example, polyethylene, or in a multilayer aluminium/plastic material, to their work-hardening state, in order to weaken the breakable portion and facilitate the subsequent opening of the container via the simultaneous removal of the tab and the portion of the polyethylene layer that is coupled with it.
  • a plastic material such as, for example, polyethylene, or in a multilayer aluminium/plastic material
  • the multilayer material can have further sheet-like layers in addition to the two described above, such as, for example, an extra aluminium layer placed between the layer in polyethylene and that in cardboard, and extra polyethylene layers placed between the various aluminium, cardboard and polyethylene layers, able to guarantee better preservation of the product inside the container or better coupling between the various layers.
  • the multilayer material could include a cardboard layer, perforated in correspondence to the breakable portion and a series of layers in polyethylene, aluminium or another similar material, but suitable for containing pourable products, especially alimentary ones, which are applied to the cardboard layer without being perforated.
  • the subsequent application of the plastic tab no longer takes place directly on the polyethylene layer, but with the insertion of further films in a printable material and/or polyethylene, which nevertheless guarantee the integral constraint between the tab and the lower layer of polyethylene.
  • the multilayer material 1 for making a container 100 is composed of a sheet-like layer in cardboard 3 and a sheet-like layer in polyethylene 4, which are firmly coupled to each other to form the multilayer material 1, subsequently destined to be processed inside a normal packing machine (not shown here).
  • the cardboard layer 3 is perforated in correspondence to a breakable portion 5, before this layer 3 is coupled to the polyethylene layer 4.
  • the multilayer material 1 is no longer perforated to make the breakable portion, as in the production of containers of known art ( Figure 2 ), and is not sterilized on both sides, but only undergoes sterilization of the inner side 6, namely that which will be in contact with the pourable product after the container 100 is formed.
  • Figure 2 shows a cross section of the breakable portion 5' of a container 100' for pourable products of known art.
  • the breakable portion 5' is completely perforated and on the inner side 6' of multilayer material 1' a further filler layer in polyethylene 4" is applied to the polyethylene layer 4', previously coupled to the cardboard layer 3'.
  • the multilayer material 1 includes a removable sheet-like body 8, preferably in a plastic material such as, for example, polyethylene and/or polyethylene coupled with aluminium, and/or similar materials, integrally coupled in a direct or indirect manner to said polyethylene layer 4, in correspondence to the breakable portion 5, but from the outer side 7 of the multilayer material, namely from the side where the cardboard layer 3 is present.
  • This body 8 is preferably composed of a tab 11 welded, at least in a portion thereof, to the polyethylene layer 4.
  • the sheet-like body 8 is a tab 11 coupled to the polyethylene layer 4 via heat-sealing (e.g. welding).
  • the purpose of this heat-sealing is not only that of coupling the various layers, but also that of bringing the inner layer in polyethylene 4 and the tab 11, or in any case the sheet-like body 8, in a plastic material, or in an aluminium and plastic material, to their work hardening state, so as to weaken their resistance to the mechanical stress that occurs in correspondence to the said breakable portion 5 when the tab 11 is removed by the user of the container.
  • the temperature reached during heat-sealing between the polyethylene layer 4 and the tab 11 can be between 200° and 400 °C, and applied for a time interval between 0.1 and 0.5 s.
  • the tab 11' is coupled to the polyethylene layer 4", which, in turn, is coupled to the innermost layer of the multilayer material 1', namely the polyethylene layer 4'.
  • the heat-sealing is carried out via two opposing dies (not shown) that exert their heating function in correspondence to the portion 10, thereby bringing the two materials to the work hardening condition. In this way, during the opening of the container 100, or rather when the tab 11 is pulled away, the portion 10 of the polyethylene layer 4 is also removed.
  • the multilayer material 1 in addition to the two layers in polyethylene 4 and cardboard 3, can include an aluminium layer 25, placed between the layer in polyethylene 4 and that in cardboard 3, and two further polyethylene layers 26, placed between the layer in aluminium 25 and that in cardboard 3 and the layer in aluminium 25 and that in polyethylene 4, able to guarantee better preservation of the product inside the container and better coupling between the various layers.
  • the multilayer material can also include a cardboard layer 3, perforated in correspondence to the breakable portion, and a series of layers in polyethylene 4 and 26, in aluminium 25 or another similar material, but suitable for containing pourable products, particularly alimentary ones, which are applied to the cardboard layer 3 without being perforated.
  • additional films in a printable material 50 and in polyethylene 51 can be coupled on outer side 7 of the multilayer material such that when the tab 11 is heat sealed to the polyethylene layer 4, they will become inserted between the tab 11 and the polyethylene layer 4 itself.
  • suitable materials for this type of container could be chosen from polyethylene, aluminium, polypropylene, low-density polyethylene, EVOH and plastic materials similar to those materials known in the field of production of containers for pourable products, preferably of an aseptic type.
  • the container 100 having a breakable portion 5, is therefore made in various distinct phases according to the number of layers that form the multilayer material 1.
  • the sheet-like layer in cardboard 3 which will then become the outer side 5 of the erected container 100, is perforated in correspondence to the breakable portion 5 and then coupled to the sheet-like layer in polyethylene 4 to form said multilayer material 1.
  • the sheet-like body 8 preferably composed of a tab 11 in a plastic material, or in a multilayer aluminium/plastic material, is coupled via heat-sealing to the polyethylene layer 4.
  • This heat-sealing is carried out according to technological parameters that preferentially lead to the work hardening of the two materials and can take place, for example, at a temperature between 200° and 400 °C, maintained for a time interval from 0.1 to 0.5 sec, based on the thickness and the number of layers involved.
  • the phase of heat-sealing the polyethylene layer 3 with the tab 11 takes place in two distinct phases so as to allow the two layers subjected to heat-sealing to cool down between a first phase and the other, for then being brought to the definitive work hardening state.
  • the multilayer material obtained according to the present invention is sterilized, partially erected, filled with the pourable product, and closed to form the said container 100.

Landscapes

  • Cartons (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
EP06425887A 2006-12-29 2006-12-29 Verfahren zur Herstellung eines Behälters für gießbare Produkte Withdrawn EP1939094A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425887A EP1939094A1 (de) 2006-12-29 2006-12-29 Verfahren zur Herstellung eines Behälters für gießbare Produkte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425887A EP1939094A1 (de) 2006-12-29 2006-12-29 Verfahren zur Herstellung eines Behälters für gießbare Produkte

Publications (1)

Publication Number Publication Date
EP1939094A1 true EP1939094A1 (de) 2008-07-02

Family

ID=38007078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425887A Withdrawn EP1939094A1 (de) 2006-12-29 2006-12-29 Verfahren zur Herstellung eines Behälters für gießbare Produkte

Country Status (1)

Country Link
EP (1) EP1939094A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20112054A1 (it) * 2011-11-11 2013-05-12 Ipi Srl Contenitore per prodotti versabili
EP2674372A1 (de) * 2012-06-12 2013-12-18 Ipi S.R.L. Vorrichtungen zum Öffnen eines Behälters für fließfähige Erzeugnisse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1030643A (en) * 1963-02-25 1966-05-25 Clemson Ind Inc Improvements in and relating to apparatus for producing tape seals over apertures insheet material
US5310262A (en) * 1992-06-02 1994-05-10 Bemis Company, Inc. Flexible package with an easy open arrangement
EP1065145A1 (de) * 1999-06-30 2001-01-03 Tetra Laval Holdings & Finance SA Verfahren und Vorrichtung zum Befestigen von Aufreisslaschen auf Verpackungsmaterial für flüssige Lebensmittelprodukte
JP2005200065A (ja) * 2004-01-16 2005-07-28 Nihon Tetra Pak Kk プルタブ貼着装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1030643A (en) * 1963-02-25 1966-05-25 Clemson Ind Inc Improvements in and relating to apparatus for producing tape seals over apertures insheet material
US5310262A (en) * 1992-06-02 1994-05-10 Bemis Company, Inc. Flexible package with an easy open arrangement
EP1065145A1 (de) * 1999-06-30 2001-01-03 Tetra Laval Holdings & Finance SA Verfahren und Vorrichtung zum Befestigen von Aufreisslaschen auf Verpackungsmaterial für flüssige Lebensmittelprodukte
JP2005200065A (ja) * 2004-01-16 2005-07-28 Nihon Tetra Pak Kk プルタブ貼着装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20112054A1 (it) * 2011-11-11 2013-05-12 Ipi Srl Contenitore per prodotti versabili
WO2013068797A1 (en) * 2011-11-11 2013-05-16 Ipi S.R.L. Container for food products
CN104024124A (zh) * 2011-11-11 2014-09-03 Ipi有限公司 用于食品的容器
CN104024124B (zh) * 2011-11-11 2016-10-05 Ipi有限公司 用于食品的容器
EP2674372A1 (de) * 2012-06-12 2013-12-18 Ipi S.R.L. Vorrichtungen zum Öffnen eines Behälters für fließfähige Erzeugnisse
WO2013185902A1 (en) * 2012-06-12 2013-12-19 Ipi S.R.L. Device for opening a container for pourable products
CN104379465A (zh) * 2012-06-12 2015-02-25 Ipi有限公司 用于开启装有可倾倒物品的容器的开启装置

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