EP1557366A1 - Emballage pour denrées alimentaires - Google Patents

Emballage pour denrées alimentaires Download PDF

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Publication number
EP1557366A1
EP1557366A1 EP04425033A EP04425033A EP1557366A1 EP 1557366 A1 EP1557366 A1 EP 1557366A1 EP 04425033 A EP04425033 A EP 04425033A EP 04425033 A EP04425033 A EP 04425033A EP 1557366 A1 EP1557366 A1 EP 1557366A1
Authority
EP
European Patent Office
Prior art keywords
film
container
plastic material
packaging
side wall
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.)
Granted
Application number
EP04425033A
Other languages
German (de)
English (en)
Other versions
EP1557366B1 (fr
Inventor
Paolo Bonometti
Claudio Zanardini
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.)
Centrale del Latte di Brescia SpA
Original Assignee
Centrale del Latte di Brescia SpA
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 Centrale del Latte di Brescia SpA filed Critical Centrale del Latte di Brescia SpA
Priority to EP04425033A priority Critical patent/EP1557366B1/fr
Priority to AT04425033T priority patent/ATE342202T1/de
Priority to DE602004002751T priority patent/DE602004002751D1/de
Priority to HR20050061A priority patent/HRP20050061A2/xx
Publication of EP1557366A1 publication Critical patent/EP1557366A1/fr
Application granted granted Critical
Publication of EP1557366B1 publication Critical patent/EP1557366B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65D23/08—Coverings or external coatings
    • B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
    • B65D23/0878—Shrunk on the bottle

Definitions

  • the present invention relates, in its more general aspect, to the technical field of food packaging.
  • the invention relates to a packaging for containing a fluid or liquid food product sensitive to light radiation, such as for example milk or fruit juice.
  • correct preservation here is used to indicate that the food product, during the period of time that passes between packaging and consumption, preserves its nutritional properties and organoleptic characteristics at best.
  • the light radiation can generate two types of effect:
  • Ionization is the formation of ions through subtraction of electrons from the atoms of the molecules which are struck by the light radiation as target.
  • the ionizing radiations perform an action on the food product similar to that of the ultra-violet rays; the extension of the action depends on the radiation energy.
  • the above degradation phenomena i.e. the alterations of the product, can be thus linked to the amount of light (light intensity and exposure duration) to which the product is exposed, to the wavelength of the light radiation, to the exposure temperature besides, as already said, the absorbing power for the considered radiation which the molecules of the product itself do have.
  • products destined to a long shelf-life can be subjected to oxidation reactions which, although developing more slowly than the degradation induced by light, bring about an undesired alteration of the taste.
  • the packaging thus, in order to ensure a correct preservation of the product contained therein, also has to guarantee a good resistance to the passage of oxygen.
  • the more recurrent one is that of adopting polycoupled containers, i.e. made of more layers of different material, of which at least one is opaque to light.
  • the more known example is that of Tetra Pak® containers wherein, between a polyethylene film and a cardboard layer, an aluminium sheet is interposed having the function of protecting from light radiation.
  • a packaging of this type is obtained by welding the polycoupled material, and it can be realised without opening, also the access to the product contained therein takes place, in this case, by cutting a corner of the container of the packaging or by providing the packaging with a closing with a small cap or a tab.
  • a solution of this type has some drawbacks, the main of which are given by, if the packaging lacks a closing system, the impossibility of closing the packaging once it has been opened and the consumption of the product has started, or by the compromised versatility of the packaging ensured by the same closing system.
  • the process of separation, for a subsequent recycling, of the different materials used for realising the packaging is also complex.
  • the more used packages for protecting the food product from light radiation are those made of more layers of plastic material having different characteristics and colours, generally a light colour for the external layers and black for the more internal layer, which constitutes the barrier-to-light system.
  • a packaging destined to contain such a product must have a realisation cost which does not account, for a considerable percentage, on the cost of the product.
  • the packaging must be structurally simple so as to ensure a low-cost manufacture thereof.
  • packages having a low environmental impact are considerably preferred by the public of consumers and meet the European directions in the field, i.e. packages realised through an eco-efficient method and being partially or wholly recyclable at the end of their use.
  • the technical problem underlying the present invention is that of devising a packaging for containing a fluid or liquid food product with such characteristics as to overcome the cited drawbacks, i.e. such as to provide a high protection from ultra-violet radiation and a high resistance to the passage of oxygen, thus guaranteeing a prolonged shelf life and which is in the meantime particularly simple from the structural point of view, as well as cheap and eco-efficient.
  • a packaging for food products of the type here considered comprising a container of plastic material including a bottom, a side wall, a mouth, a cap closing said mouth and a film of plastic material externally tied to said side wall, characterised in that said film is metallized on at least one side thereof.
  • the above film of plastic material is of the so-called thermoshrinking type.
  • the above film of plastic material is metallized on the sole side facing the above wall of this container.
  • the above container and the above film are made of the same plastic material, preferably polyethylene terephthalate.
  • the above metallized film covers the side wall of the container and it can possibly extend to cover at least one portion of the above closing cap and at least one portion of the above bottom.
  • the above metallized film comprises an aluminium layer on the above side facing the side wall of the container, this aluminium layer having a thickness comprised between 10 nm and 20 nm, preferably 15 nm.
  • the packaging according to the present invention further comprises a lid of plastic material opaque to light radiation associated with the above bottom of the container and peripherally equipped with an edge projecting on top for covering a lower end portion of the above side wall of the container.
  • the present invention also relates to a method for obtaining a packaging for fluid or liquid food product sensitive to light radiation, comprising the application of a film of plastic material metallized on at least one side thereof on the side wall of a container substantially bottle-like shaped and filled in with such a product.
  • this film is thermoshrinking, it is made in the form of a sleeve and it is applied by putting the sleeve on the container and by subsequently inducing the sleeve shrinking through exposure to heat.
  • a packaging for containing a fluid or liquid food product sensitive to light radiation according to the present invention is globally indicated with 1.
  • Packaging 1 essentially comprises a container 2 of plastic material, substantially bottle-like shaped having a vertical X-X axis, a side wall 3 extending between a mouth 4 closed by a respective cap 5 and a bottom 6, and a film 7 of plastic material externally tied to this side wall 3.
  • this film 7 of plastic material is a metallized film.
  • metallized film is here used to indicate a film of plastic material whereon, on the side facing the side wall 3 of the container 2, a reduced amount of a powder of a metal is deposited to form a metal layer with a thickness of a few hundredths of micron, not excluding however the possibility of providing such a layer on the other side or on both sides of the film.
  • This metal layer is a layer sufficient to make the film opaque to light radiation and it is preferably an aluminium layer having a thickness comprised between 10 nm and 20 nm, more preferably 15 nm.
  • the above metallized film 7 is of the so-called thermoshrinking type.
  • thermoshrinking film means a film which shrinks when it is subjected to heating.
  • the above container 2 and the above film 7, in packaging 1, are made of the same plastic material.
  • the polyethylene terephthalate or PET is the preferred one.
  • film 7, externally tied to the side wall 3, extends, along the vertical direction of the container 2, for a section of prefixed length.
  • the length of said section is only slightly lower than the height of the container 2.
  • the side wall 3 of the container 2 is substantially entirely covered by the metallized film 7, except from a limited upper end portion 3a, whereon the film does not extend.
  • Cap 5 of packaging 1 covers however this limited upper end portion 3a and it is in turn covered on bottom by film 7, which thus advantageously constitutes a warranty seal.
  • a packaging 1 for containing long life milk according to a preferred embodiment of the invention is now described.
  • Such a packaging 1 is obtained starting from a pre-mould and from a film made of the same plastic material, in particular polyethylene terephthalate.
  • a substantially bottle-like shaped container 2 comprising a side wall 3 and having a vertical X-X axis.
  • thermoshrinking type From the film of the so-called thermoshrinking type, through a conventional metallization process, a metallized film 7 is obtained by depositing some aluminium powder on one side thereof.
  • the aluminium layer thus formed on this side has a thickness in the order of the hundredths of micron and it is selectively deposited on this side of the film, so that this latter in correspondence of an end portion thereof along the vertical direction lacks this aluminium or metallization layer.
  • the film is thus made in the form of a sleeve through welding along this portion lacking metallization.
  • the sleeve of metallized film is thus put on the container 2, upon filling of this latter with long life milk and closing thereof with a respective cap 5 of plastic material.
  • the sleeve of metallized film 7 is put on the container 2 by making the metallized side face the side wall 3 of the container 2.
  • the metallized film 7 and the container 2 are subjected to thermal treatment through heating in a steam oven.
  • thermoshrinking film 7 undergoes a shrinking or contraction in size; at the end of the thermal treatment it tightly adheres to the side wall 3 of the container 2.
  • the tests have been carried out on the examined samples for periods of time of preservation of 15, 30, 45, 60, 75, 90 and 105 days on packages conditioned at the temperature of 23°C.
  • Vitamin A ( ⁇ g/ 100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 45 64 59 48 48 65 69 BRIK 45 63 57 55 57 47 52
  • Vitamin E (mg/100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 0.059 0.062 0.060 0.053 0.056 0.065 0.055 BRIK 0.054 0.067 0.055 0.069 0.062 0.044 0.052 Vitamin B1 (mg/100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 0.04 0.04 0.04 0.04 0.04 0.02 BRIK 0.04 0.04 0.04 0.04 0.03 0.04 0.02 Vitamin B2 (mg/100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg gg PETm 0.04 0.04 0.04 0.04 0.04 0.02 BRIK 0.04 0.04 0.04 0.03 0.
  • the main advantage of the packaging according to the present invention stays in the combined achievement of a high protection from light radiation and a high resistance to the passage of oxygen.
  • Film 7 of plastic material due to the metal layer on at least one side thereof, protects the container 2 of packaging 1 and thus the product contained therein from light radiation capable of causing undesired degradation reactions, especially degradation of the vitamins and proteins in the food product.
  • the container 2 of plastic material in particular PET, guarantees a high resistance to the passage of oxygen, having good barrier properties with respect to gas.
  • the manufacture of the container 2 and of the film 7 with the same plastic material is particularly advantageous both from the economical and ecological point of view.
  • the entire packaging 1 can be considered as realised with a single material, the amount of metal contained therein being negligible.
  • This aspect makes it more efficient the recuperation and reuse of the recyclable material in the packaging.
  • Polyethylene terephthalate in fact, is a thermoplastic polyester easily reusable which can be employed both in the manufacture of bottles and various containers and in a different field such as for example in the field of fibres to realise fabrics, packages and similar products.
  • polyethylene terephthalate easily allows to realise manufactures of good quality, i.e. packages well defined by well arranged details.
  • This latter aspect has a positive influence both on the functionality of packaging 1 - e.g. it allows the realisation of an effective coupling between the cap 5 and the container 2 - and on the aesthetic aspect of packaging 1 making it particularly pleasant.
  • packaging 1 can comprise, in order to entirely cover the bottom of the container 2, a lid of plastic material opaque to light radiation associated with the above bottom 6 of the container 2, for example by fitting it thereon.
  • the above lid of plastic material can be provided peripherally equipped with an edge projecting on top covering a lower end portion of the side wall 3 of the container 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Closures For Containers (AREA)
EP04425033A 2004-01-22 2004-01-22 Emballage pour denrées alimentaires Expired - Lifetime EP1557366B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04425033A EP1557366B1 (fr) 2004-01-22 2004-01-22 Emballage pour denrées alimentaires
AT04425033T ATE342202T1 (de) 2004-01-22 2004-01-22 Lebensmittelverpackung
DE602004002751T DE602004002751D1 (de) 2004-01-22 2004-01-22 Lebensmittelverpackung
HR20050061A HRP20050061A2 (en) 2004-01-22 2005-01-20 Containers for foodstuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425033A EP1557366B1 (fr) 2004-01-22 2004-01-22 Emballage pour denrées alimentaires

Publications (2)

Publication Number Publication Date
EP1557366A1 true EP1557366A1 (fr) 2005-07-27
EP1557366B1 EP1557366B1 (fr) 2006-10-11

Family

ID=34626568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425033A Expired - Lifetime EP1557366B1 (fr) 2004-01-22 2004-01-22 Emballage pour denrées alimentaires

Country Status (4)

Country Link
EP (1) EP1557366B1 (fr)
AT (1) ATE342202T1 (fr)
DE (1) DE602004002751D1 (fr)
HR (1) HRP20050061A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105473457A (zh) * 2013-05-06 2016-04-06 达能日尔维公司 饮料瓶、制造饮料瓶的方法和设计插图的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051265A (en) * 1974-10-10 1977-09-27 Celanese Corporation Package for light and oxygen sensitive food
FR2575137A1 (fr) * 1984-12-20 1986-06-27 Sleever Int Gaine composite thermoretractable et son procede de fabrication
EP1026092A1 (fr) * 1999-01-27 2000-08-09 Kabushiki Kaisha Alpha Giken Récipient pour produits sensibles à l'humidité
US20030021918A1 (en) * 2001-07-27 2003-01-30 Mckillip Barron G. Metalized shrink label and related method of manufacture
US6596328B1 (en) * 2000-03-30 2003-07-22 Recot, Inc. Consumables container with multi-functional cap

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051265A (en) * 1974-10-10 1977-09-27 Celanese Corporation Package for light and oxygen sensitive food
FR2575137A1 (fr) * 1984-12-20 1986-06-27 Sleever Int Gaine composite thermoretractable et son procede de fabrication
EP1026092A1 (fr) * 1999-01-27 2000-08-09 Kabushiki Kaisha Alpha Giken Récipient pour produits sensibles à l'humidité
US6596328B1 (en) * 2000-03-30 2003-07-22 Recot, Inc. Consumables container with multi-functional cap
US20030021918A1 (en) * 2001-07-27 2003-01-30 Mckillip Barron G. Metalized shrink label and related method of manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 03 28 April 1995 (1995-04-28) *

Also Published As

Publication number Publication date
DE602004002751D1 (de) 2006-11-23
ATE342202T1 (de) 2006-11-15
HRP20050061A2 (en) 2007-02-28
EP1557366B1 (fr) 2006-10-11

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