EP1557366A1 - Food product packaging - Google Patents
Food product packaging Download PDFInfo
- 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
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/08—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.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Wrappers (AREA)
- Closures For Containers (AREA)
Abstract
Description
- The present invention relates, in its more general aspect, to the technical field of food packaging.
- In particular 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.
- In the field of food packaging the need of guaranteeing a correct preservation of the product is particularly felt.
- The expression "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.
- In the case of a fluid or liquid food product sensitive to light radiation, such as for example milk, yoghurt or fruit juice, undesired phenomena of degradation can be induced in the product due to exposure to the above radiation.
- In particular, the light radiation can generate two types of effect:
- In the sun light violet and ultra-violet radiations, i.e. those having low wavelength and thus high energy, are the more efficient; they have enough energy to activate some molecules of the food product which determine undesired chemical reactions.
- Obviously, different products have different sensitivities to degradation through light radiation due to the different absorbing power for the considered radiation the molecules of the product itself do have.
- 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.
- In milk, in particular, greater alterations are found for exposures to radiations having wavelength lower than 550 nm.
- Additionally, products destined to a long shelf-life, such as for example UHT milk or long-life milk, 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 known technique for packaging a food product of the type here considered provides several solutions.
- 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.
- Although advantageous under several aspects, 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.
- Among containers of the bottle type, 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.
- Those bottles realised by co-extruding and blowing high density polyethylene (HDPE) or bottles of polyethylene terephthalate (PET) obtained starting from multilayer pre-moulds wherein colourings and/or additives are added to the PET polymer belong to this type of bottles.
- Although meeting the aim, also packages of this type are not exempt from having drawbacks.
- Besides the poor barrier to oxygen given by polyethylene, the main limit of these packages stays in their layered structure which makes them particularly difficult to be realised; in particular the method for obtaining layered pre-moulds is complex, besides being expensive.
- In this regard, it is to be observed that the public of consumers pay particular attention to the cost of those food products, such as milk, considered as of first need.
- It results that, preferably, 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.
- Thus, preferably, the packaging must be structurally simple so as to ensure a low-cost manufacture thereof.
- It is further to be observed that for containing milk and similar widely consumed food products, 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.
- The above problem is solved, according to the present invention, by 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.
- Preferably, the above film of plastic material is of the so-called thermoshrinking type.
- Further, preferably, the above film of plastic material is metallized on the sole side facing the above wall of this container.
- Advantageously, the above container and the above film are made of the same plastic material, preferably polyethylene terephthalate.
- Further, advantageously, 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.
- Preferably, 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.
- In a varying embodiment, 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.
- Advantageously, 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.
- The advantages and characteristics of a packaging for fluid or liquid food products according to the present invention will be more apparent from the following description of an embodiment thereof given by way of indicative, non limiting example with reference to the annexed drawings.
- In these drawings:
- Figure 1 schematically shows a perspective view of a packaging for food products according to the invention.
-
- With reference to figure 1, 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, aside wall 3 extending between amouth 4 closed by a respective cap 5 and abottom 6, and afilm 7 of plastic material externally tied to thisside wall 3. - According to a first characteristic of the present invention, this
film 7 of plastic material is a metallized film. - The expression metallized film is here used to indicate a film of plastic material whereon, on the side facing the
side wall 3 of thecontainer 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.
- Further, advantageously, the above
metallized film 7 is of the so-called thermoshrinking type. - The expression thermoshrinking film means a film which shrinks when it is subjected to heating.
- According to a further characteristic of the invention, the
above container 2 and theabove film 7, in packaging 1, are made of the same plastic material. - Among the plastic materials which can be used the polyethylene terephthalate or PET is the preferred one.
- In packaging 1,
film 7, externally tied to theside wall 3, extends, along the vertical direction of thecontainer 2, for a section of prefixed length. - In particular, the length of said section is only slightly lower than the height of the
container 2. - As a consequence, the
side wall 3 of thecontainer 2 is substantially entirely covered by themetallized 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.
- From the pre-mould, of 29 grams in weight comprising an additive absorbing ultra-violet radiation, subsequently to blowing, a substantially bottle-like
shaped container 2 is obtained comprising aside wall 3 and having a vertical X-X axis. - 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 above portion, however, in the welding overlaps a metallized portion of the film, so that a totally metallized sleeve results.
- 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. - In particular, the sleeve of metallized
film 7 is put on thecontainer 2 by making the metallized side face theside wall 3 of thecontainer 2. - At this point, the metallized
film 7 and thecontainer 2 are subjected to thermal treatment through heating in a steam oven. - During the above
thermal treatment film 7 is tightly merged in thecontainer 2. - In particular, further to heating, the
thermoshrinking film 7 undergoes a shrinking or contraction in size; at the end of the thermal treatment it tightly adheres to theside wall 3 of thecontainer 2. - In order to evaluate if the packaging according to the present invention guarantees a correct preservation of the food product contained therein, several comparative tests have been carried out.
- These tests have been carried out on the same food product: UHT milk, packaged and contained in packages according to the present invention and respectively in packages of Tetra Pak® of equal capacity equal to 1 litre.
- 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.
- In the analyses carried out through the tests the content of the following vitamins has been determined:
- Vitamin A
- Vitamin E
- Vitamin B1
- Vitamin B2
- Vitamin B3
- Vitamin B5 and of the following proteins:
- Alpha Casein
- Beta Casein
- Kappa Casein
- Beta Lactoglobulin
- Alpha Lactoglobulin + AY53
- Peptide A
-
- The comparative results of the values found in the preservation test are reported in the herebelow tables, wherein the reference acronyms PETm and Brik indicate a packaging according to the present invention and respectively a Tetra Pak® packaging.
- From the tables it is evinced that, for all the examined aspects, no meaningful differences have been found.
Vitamin A (µg/ 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 0.04 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 105 gg PETm 0.16 0.16 0.16 0.15 0.15 0.17 0.19 BRIK 0.17 0.15 0.17 0.16 0.15 0.18 0.16 Vitamin B3 (mg/100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 0.096 0.13 0.14 0.12 0.16 0.13 0.15 BRIK 0.10 0.13 0.14 0.12 0.14 0.14 0.16 Vitamin B5 (mg/100g) 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 0.32 0.38 0.34 0.28 0.40 0.44 0.39 BRIK 0.35 0.39 0.32 0.45 0.40 0.45 0.40 Alpha Casein % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 35 35 37 35 36 36 36 BRIK 35 35 35 34 34 34 34 Beta Casein % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 22 22 21 23 22 21 22 BRIK 23 21 22 20 21 18 20 Kappa Casein % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 12 13 13 13 13 13 13 BRIK 13 14 12 14 13 15 14 Beta Lactoglobulin % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 21 20 21 20 20 21 20 BRIK 18 19 18 20 20 19 20 Alpha Lactoglobulin + AY53 % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 8 7 8 8 8 8 8 BRIK 8 9 8 9 8 9 8 Peptide % 15 gg 30 gg 45 gg 60 gg 75 gg 90 gg 105 gg PETm 2 3 2 2 3 3 3 BRIK 2 2 3 2 2 3 2 - 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.
- In this way, a correct preservation and a prolonged shelf life is guaranteed for the food product contained in the packaging according to the invention.
-
Film 7 of plastic material, due to the metal layer on at least one side thereof, protects thecontainer 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. - Moreover, the manufacture of the
container 2 and of thefilm 7 with the same plastic material is particularly advantageous both from the economical and ecological point of view. - And further, given the extremely limited thickness of the metallization on
film 7, 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.
- In this regard, it is useful to underline how the use of polyethylene terephthalate for realising the
container 2 and thefilm 7 makes the packaging according to the present invention totally recyclable. - 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.
- It is also to be said that the use of polyethylene terephthalate is economically advantageous since its cost is very competitive with respect to other materials used in similar applications.
- Further, 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.
- Obviously, a skilled in the art will be allowed to apply several modifications and variations to the above described invention.
- For example 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 theabove bottom 6 of thecontainer 2, for example by fitting it thereon. - Preferably, 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 thecontainer 2. - A skilled in the art, in order to meet specific, contingent needs, will be allowed to add other variations and modifications to those of the packaging according to the present invention, all within the scope of protection of the invention as defined in the following claims.
Claims (13)
- A packaging (1) for fluid or liquid food products sensitive to light radiation comprising a container (2) of plastic material including a bottom (6), a side wall (3), a mouth (4), a cap (5) closing said mouth (4) and a film (7) of plastic material, said film (7) being externally tied to the side wall (3) of said container (2), characterised in that said film (7) is metallized on at least one side thereof.
- A packaging according to claim 1, wherein said film (7) of plastic material is thermoshrinking.
- A packaging according to claim 1 or 2, wherein said film (7) of plastic material is metallized on one side only, said side facing the side wall (3) of said container (2).
- A packaging according to any claim 1 to 3, wherein said container (2) and said film (7) are made of the same plastic material.
- A packaging according to claim 4, wherein said plastic material is polyethylene terephthalate.
- A packaging according to any claim 3 to 5, wherein said metallized film (7) of plastic material comprises an aluminium layer.
- A packaging according to claim 6, wherein said aluminium layer has a thickness comprised between 10 nm and 20 nm, preferably a thickness of 15 nm.
- A packaging according to any of the preceding claims, wherein said metallized film (7) substantially covers said side wall (3) entirely and optionally at least one portion of said closing cap (5) and at least one portion of said bottom (6) of the container (2).
- A packaging according to any of the preceding claims, further comprising a lid of plastic material opaque to light radiation associated with the bottom (6) of the container (2), said lid being peripherally equipped with an edge projecting on top for covering a lower end portion of said side wall (3) of the container (2).
- Use of a film (7) of plastic material metallized on at least one side thereof to coat a container (2) for a fluid or liquid food product sensitive to light radiation.
- Use according to claim 10, wherein said food product is milk.
- A method for obtaining a packaging (1) for a fluid or liquid product sensitive to light radiation, comprising the application of a film (7) of plastic material metallized on at least one side thereof on a side wall (3) of a container (2) filled in with said product.
- A method according to claim 12, wherein said film (7) is thermoshrinking, it is made in the form of a sleeve and it is applied by putting said sleeve on said container (2) and by subsequently inducing the shrinking of the sleeve further to exposure to heat.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04425033A EP1557366B1 (en) | 2004-01-22 | 2004-01-22 | Food product packaging |
AT04425033T ATE342202T1 (en) | 2004-01-22 | 2004-01-22 | FOOD PACKAGING |
DE602004002751T DE602004002751D1 (en) | 2004-01-22 | 2004-01-22 | Food packaging |
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 (en) | 2004-01-22 | 2004-01-22 | Food product packaging |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1557366A1 true EP1557366A1 (en) | 2005-07-27 |
EP1557366B1 EP1557366B1 (en) | 2006-10-11 |
Family
ID=34626568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04425033A Expired - Lifetime EP1557366B1 (en) | 2004-01-22 | 2004-01-22 | Food product packaging |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1557366B1 (en) |
AT (1) | ATE342202T1 (en) |
DE (1) | DE602004002751D1 (en) |
HR (1) | HRP20050061A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105473457A (en) * | 2013-05-06 | 2016-04-06 | 达能日尔维公司 | A beverage bottle, a method of manufacturing a beverage bottle and a method of designing an illustration |
Citations (5)
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 (en) * | 1984-12-20 | 1986-06-27 | Sleever Int | Heat-shrinkable composite sheath and process for manufacturing it |
EP1026092A1 (en) * | 1999-01-27 | 2000-08-09 | Kabushiki Kaisha Alpha Giken | Container for moisture-sensitive products |
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 |
-
2004
- 2004-01-22 EP EP04425033A patent/EP1557366B1/en not_active Expired - Lifetime
- 2004-01-22 DE DE602004002751T patent/DE602004002751D1/en not_active Expired - Lifetime
- 2004-01-22 AT AT04425033T patent/ATE342202T1/en not_active IP Right Cessation
-
2005
- 2005-01-20 HR HR20050061A patent/HRP20050061A2/en not_active Application Discontinuation
Patent Citations (5)
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 (en) * | 1984-12-20 | 1986-06-27 | Sleever Int | Heat-shrinkable composite sheath and process for manufacturing it |
EP1026092A1 (en) * | 1999-01-27 | 2000-08-09 | Kabushiki Kaisha Alpha Giken | Container for moisture-sensitive products |
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)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 03 28 April 1995 (1995-04-28) * |
Also Published As
Publication number | Publication date |
---|---|
DE602004002751D1 (en) | 2006-11-23 |
ATE342202T1 (en) | 2006-11-15 |
HRP20050061A2 (en) | 2007-02-28 |
EP1557366B1 (en) | 2006-10-11 |
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