CA2703929A1 - Film-type packaging - Google Patents
Film-type packaging Download PDFInfo
- Publication number
- CA2703929A1 CA2703929A1 CA2703929A CA2703929A CA2703929A1 CA 2703929 A1 CA2703929 A1 CA 2703929A1 CA 2703929 A CA2703929 A CA 2703929A CA 2703929 A CA2703929 A CA 2703929A CA 2703929 A1 CA2703929 A1 CA 2703929A1
- Authority
- CA
- Canada
- Prior art keywords
- film
- sealing
- container
- hot
- aluminium foil
- 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.)
- Abandoned
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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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
- B65D85/76—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for cheese
Landscapes
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Closures For Containers (AREA)
- Package Specialized In Special Use (AREA)
- Packages (AREA)
Abstract
Film-type packaging for soft foodstuffs comprises a container film shape-formed into the form of an open container (13) and a lidding film which is sealed onto the container film closing the container (13) with a lid (16). The container film and the lidding film are multi-layered and one of the layers is an aluminium foil which is optionally pre-lacquered and if desired printed on and lacquer coated on one side. The aluminium foil of the container film and the lidding film is coated with a polymer and a hot-sealing lacquer is provided on the polymer layer of the container film. Alternatively a) the polymer, optionally coated with hot-sealing lacquer, is situated on the sealing side of the aluminium foil of the lidding film, and a corrosion protection layer, if desired in the form of a polymer, is provided on the other side of the aluminium foil, or b) the aluminium foil of the lidding film is coated on the sealing side with hot-sealing lacquer and the, optionally hot-sealing lacquer coated, polymer layer is situated on the other side of the aluminium foil.
Description
Film-type Packaging The invention relates to a film-type form of packaging for soft foodstuffs, having a container film shaped into the form of an open container featuring a hot-sealing layer and a lidding film which is sealed onto the hot-sealing layer of the container film and closes the container with a lid, whereby the container film and the lidding film are multi-layered and one of the layers is an aluminium foil which is optionally pre-lacquered on one side and if desired is printed on and lacquered over.
Known are film-type forms of packaging made of coated aluminium foils for packaging small portions of soft cheese or melting cheese in the form of cubes, triangles, tetrahedrons and other designs suitable for packaging small portions of soft contents, such as are served as snacks along with aperitifs. In a packaging machine the cheese is poured in portions in a molten or pasty state into open containers of shaped container film. After laying lids of lidding film onto the contents in the open container, the lids are tightly hot-sealed onto the container along a peripheral strip of container edge which is bent inwards towards the lid.
Up to now the kinds of aluminium foils employed for the film-type forms of packaging mentioned above were coated with a lacquer-type primer to protect aluminium from corrosion and to improve adhesion of the hot-sealing lacquer.
With this measure, however, it is not always possible to avoid unattractive surface corrosion of the aluminium foil due to migration of corrosion-promoting substances in the cheese through the lacquer layers.
The object of the present invention is to provide a film-type form of packaging of the kind mentioned at the start in which the aluminium foil is effectively protected against corrosion and good bonding with hot-sealing lacquers is provided.
Known are film-type forms of packaging made of coated aluminium foils for packaging small portions of soft cheese or melting cheese in the form of cubes, triangles, tetrahedrons and other designs suitable for packaging small portions of soft contents, such as are served as snacks along with aperitifs. In a packaging machine the cheese is poured in portions in a molten or pasty state into open containers of shaped container film. After laying lids of lidding film onto the contents in the open container, the lids are tightly hot-sealed onto the container along a peripheral strip of container edge which is bent inwards towards the lid.
Up to now the kinds of aluminium foils employed for the film-type forms of packaging mentioned above were coated with a lacquer-type primer to protect aluminium from corrosion and to improve adhesion of the hot-sealing lacquer.
With this measure, however, it is not always possible to avoid unattractive surface corrosion of the aluminium foil due to migration of corrosion-promoting substances in the cheese through the lacquer layers.
The object of the present invention is to provide a film-type form of packaging of the kind mentioned at the start in which the aluminium foil is effectively protected against corrosion and good bonding with hot-sealing lacquers is provided.
That objective is achieved by way of the invention in that the aluminium foil of the container film and the lidding film is coated with a polymer layer, whereby the hot-sealing layer is situated on the polymer layer on the container film and, alternatively, a) the polymer, optionally coated with hot-sealing lacquer, is situated on the sealing side of the aluminium foil of the lidding film, and a corrosion protect-ion layer, if desired in the form of an polymer, is provided on the other side of the aluminium foil, or b) the aluminium foil of the lidding film is coated on the sealing side with hot-sealing lacquer and the, optionally hot-sealing lacquer coated, polymer layer is situated on the other side of the aluminium foil.
The polymer layer is preferably a ionomer layer. The essential advantage of the ionomer layer over a conventional lacquer-based primer is that very thin films can be produced that exhibit high mechanical stability and effectively protect the underlying aluminium foil against corrosion. Further, the thin ionomer layer forms an excellent primer for hot-sealing layers.
The hot-sealing lacquer is advantageously a low-temperature sealing lacquer, i.
e., a sealing layer that seals already at temperatures from 50 C upwards.
The aluminium foil of the container film and the lidding film is preferably coated with 1 to 10 g/m2, in particular 2 to 8 g/m2 of polymer.
The thickness of the aluminium foil of the container film and the lidding film is preferably about 5 to 15 pm, in particular about 6 to 12 pm.
The polymer is preferably a polyolefin, such as polyethylene or polypropylene , or a ionomer, such as an ethylene / acrylic acid/ zinc or sodium ionomer or a zinc-acrylate ter-ionomer. A suitable ionomer is the product known by the trade name Surlyn 1857.
The film-type form of packaging according to the invention is particularly suitable for packaging soft foodstuffs, especially in the form of blocks or cubes.
Suitable soft foodstuffs, apart from soft cheese and melting cheese are e.g.
sweets.
The aluminium foil of the film-type packaging according to the invention shows excellent dead fold properties which are necessary with packaging of the afore-mentioned kind.
The film-type packaging according to the invention may be provided with opening aids known in the art, such as tear strips or threads, or by a film orientated in the tear direction.
Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments and with the aid of the drawing, which shows schematically in Fig. 1 a perspective view of a cube-shaped film-type packaging;
Fig. 2 a vertical section through the film-type packaging shown in figure 1 along line I-I, showing a fist version of a lid;
Fig. 3 a vertical section through the film-type packaging shown in figure 1 along line I-I, showing a second version of a lid;
Fig. 4 a cross-section through the container film of the film-type packaging shown in figure 2;
Fig. 5-8 a cross-section through various versions of lidding films for the container film in figure 4;
The polymer layer is preferably a ionomer layer. The essential advantage of the ionomer layer over a conventional lacquer-based primer is that very thin films can be produced that exhibit high mechanical stability and effectively protect the underlying aluminium foil against corrosion. Further, the thin ionomer layer forms an excellent primer for hot-sealing layers.
The hot-sealing lacquer is advantageously a low-temperature sealing lacquer, i.
e., a sealing layer that seals already at temperatures from 50 C upwards.
The aluminium foil of the container film and the lidding film is preferably coated with 1 to 10 g/m2, in particular 2 to 8 g/m2 of polymer.
The thickness of the aluminium foil of the container film and the lidding film is preferably about 5 to 15 pm, in particular about 6 to 12 pm.
The polymer is preferably a polyolefin, such as polyethylene or polypropylene , or a ionomer, such as an ethylene / acrylic acid/ zinc or sodium ionomer or a zinc-acrylate ter-ionomer. A suitable ionomer is the product known by the trade name Surlyn 1857.
The film-type form of packaging according to the invention is particularly suitable for packaging soft foodstuffs, especially in the form of blocks or cubes.
Suitable soft foodstuffs, apart from soft cheese and melting cheese are e.g.
sweets.
The aluminium foil of the film-type packaging according to the invention shows excellent dead fold properties which are necessary with packaging of the afore-mentioned kind.
The film-type packaging according to the invention may be provided with opening aids known in the art, such as tear strips or threads, or by a film orientated in the tear direction.
Further advantages, features and details of the invention are revealed in the following description of preferred exemplified embodiments and with the aid of the drawing, which shows schematically in Fig. 1 a perspective view of a cube-shaped film-type packaging;
Fig. 2 a vertical section through the film-type packaging shown in figure 1 along line I-I, showing a fist version of a lid;
Fig. 3 a vertical section through the film-type packaging shown in figure 1 along line I-I, showing a second version of a lid;
Fig. 4 a cross-section through the container film of the film-type packaging shown in figure 2;
Fig. 5-8 a cross-section through various versions of lidding films for the container film in figure 4;
Fig. 9 a cross-section through the container film of the film-type packaging shown in figure 3;
Fig. 10 a cross-section through a lidding film for the container film shown in figure 9.
Shown in Fig. 1 is a cube-shaped film-type packaging 10 for soft contents 18 such as e.g. melting cheese or soft cheese in the form of aperitif cubes comprising a container 13 with a base 11 and side walls 12 projecting up therefrom, the free edges of which are folded inwards at an angle of 90 forming a peripheral sealing edge 14. A lid 16, 20 is hot-sealed onto the sealing edge from the inside of the packaging.
The film-type packaging 10 shown in figure 2 features a lid 16 with folded over, flat quadratic lid area. The hot-sealing - indicated by the arrows - of the lid 16 onto the sealing edge 14 of the container 13 takes place with appropriate sealing tools from above and from the sides facing the contents 18 which, at an earlier stage, are poured portion-wise in the fluid state into the container which is pre-formed on a packaging machine out of a container film 30 and is open at the top.
In principle it is possible to reach sealing with the hot contents 18 at filling without sealing tools already at a temperature of the contents from 50 C
upwards by a suitable choice of a low-temperature lacquer adapted to the filling temperature of the contents.
In the version of film-type packaging 10 shown in figure 3 the lid 20 features a quadratic base area 22 with edges that have been folded twice about an angle of 90 upwards and inwards with the cut edges 23 facing inwards, with the result that sealing faces 24 are produced parallel to the side walls 12 of the container 13 and sealing faces 26 are produced parallel to the sealing edge 14 of the container 13. As in the example shown in figure 2, the hot sealing -indicated by arrows - of the lid 20 onto the sealing edge 14 of the container takes place with corresponding sealing tools from above and from the sides facing the contents 18 which, at an earlier stage, are poured portion-wise in the 5 fluid state into the container 13 which is pre-formed on a packaging machine out of a container film 30 and is open at the top.
A container film 30 with an aluminium foil 34 shown in figure 4 features in sequence, on the side of the aluminium foil 34 facing out from the packaging 10, a pre-lacquer layer 42, printing 44 and, on the outside, an outer protective lacquer layer 46.
On the sealing side 18 facing the contents 18 the aluminium foil 34 is coated with an ionomer deposited by extrusion coating. Here, the ionomer layer 36 serves both as primer for a low-temperature hot-sealing layer 38a and as a corrosion protection layer.
A first version of lidding film 32 for the production of the lid 16 features -as shown in figure 5 - an aluminium foil 34 the sealing side of which is coated with a hot-sealing lacquer 38. The side of the aluminium foil 34 facing the contents 18 is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer takes on the function of a corrosion protection layer.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 5 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film and the hot-sealing layer 38 of the lidding film 32.
A second version of lidding film 32 for manufacture of the lid 16 features -as shown in figure 6 - an aluminium foil 34, the sealing side of which is coated with a hot-sealing lacquer 38. The side of the aluminium foil facing the contents 18 is coated with an ionomer 36 deposited by extrusion coating. Here, the ionomer layer serves as primer for a low-temperature hot-sealing layer 38a and as a corrosion protection layer.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 6 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the hot-sealing layer 38 of the lidding film 32. Further sealing takes place between the low-temperature hot-sealing layer 38a of the container film 30 and the low-temperature hot-sealing layer 38a of the lidding film 32 in the region of the side walls 12 of the container 13. Depending on the temperature, the sealing temperature of a low-temperature hot-sealing lacquer lies approximately between 50 and 120 C.
A third version of lidding film 32 for manufacture of the lid 16 features - as shown in figure 7 - an aluminium foil 34, the sealing side of which is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer 36 serves here as primer for a hot-sealing layer 38. The side of the aluminium foil facing the contents 18 is provided with a conventional corrosion protection layer 40.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 7 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the hot sealing layer 38 of the lidding film 32.
A fourth lidding film 32 for the manufacture of the lid 16 features - as shown in figure 8 - an aluminium foil 34, the sealing side of which is coated with an ionomer deposited by extrusion coating. The side of the aluminium foil facing the contents 18 is coated with a conventional corrosion protection lacquer 40.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 7 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the ionomer layer 36 of the lidding film 32.
A further container film 30 with an aluminium foil 34, shown in figure 9, features printing 44 on the side of the aluminium foil 34 facing out from the film-type packaging 10.
On the sealing side facing the contents 18 the aluminium foil 34 is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer 36 serves here as primer for a hot-sealing layer 38 A lidding film 32 used to make the lid 20 features - as shown in figure 10 -an aluminium film 34 which is coated on the side facing the contents with an ionomer 36 deposited by extrusion coating to provide a primer for a hot-sealing lacquer 38. By folding the edges of the lid 20 twice about an angle of 90 , upwards and inwards, the side coated with the hot-sealing lacquer 38 forms the sealing areas 26 facing the container film 30. On the side of the lidding film facing the contents 18 the ionomer layer 36 takes on the additional function of a corrosion protection layer.
In a combination of the container film 30 in figure 9 and the lidding film 32 in figure 10 the sealing takes place in the region of the sealing areas 26 and the sealing areas 24 of the lid 20 between the hot-sealing layer 38 of the container film 30 and the hot-sealing layer 38 of the lidding film 32.
Further sealing occurs between the ionomer layer 36 of the surrounding edge forming the sealing areas 26 and the ionomer layer of the underlying base area 22 of the lid 20, and between the hot sealing layer 38 of the container film and the ionomer layer 36 of the underlying lidding layer 32 in the part of the sealing edge 14 of the container 13 projecting beyond the sealing areas 26 of the lid 20.
In the examples shown in figures 4 to 8 the thickness of the aluminium foil lies preferably between approximately 5 and 9 pm, in particular between approximately 6 and 8 pm, and in the examples shown in figures 9 and 10, preferably between approximately 9 and 15 pm, in particular between approximately 11 and 13 pm. The thickness of the ionomer layer 36 in all examples shown amounts to a weight per unit area of approximately 1 - 10 g/m2, in particular approximately 2 - 8 g/m2.
Instead of an extrusion coating layer, the ionomer layer 36 may also be deposit-ed on the aluminium foil 34 in an aqueous emulsion and subsequently dried at a temperature of about 80 C to form a film. A suitable ionomer is e.g. Surlyn 1857.
For example, hot-sealing lacquers of acrylic or vinyl-acetate basis may be employed to produce the hot-sealing layer 38.
Fig. 10 a cross-section through a lidding film for the container film shown in figure 9.
Shown in Fig. 1 is a cube-shaped film-type packaging 10 for soft contents 18 such as e.g. melting cheese or soft cheese in the form of aperitif cubes comprising a container 13 with a base 11 and side walls 12 projecting up therefrom, the free edges of which are folded inwards at an angle of 90 forming a peripheral sealing edge 14. A lid 16, 20 is hot-sealed onto the sealing edge from the inside of the packaging.
The film-type packaging 10 shown in figure 2 features a lid 16 with folded over, flat quadratic lid area. The hot-sealing - indicated by the arrows - of the lid 16 onto the sealing edge 14 of the container 13 takes place with appropriate sealing tools from above and from the sides facing the contents 18 which, at an earlier stage, are poured portion-wise in the fluid state into the container which is pre-formed on a packaging machine out of a container film 30 and is open at the top.
In principle it is possible to reach sealing with the hot contents 18 at filling without sealing tools already at a temperature of the contents from 50 C
upwards by a suitable choice of a low-temperature lacquer adapted to the filling temperature of the contents.
In the version of film-type packaging 10 shown in figure 3 the lid 20 features a quadratic base area 22 with edges that have been folded twice about an angle of 90 upwards and inwards with the cut edges 23 facing inwards, with the result that sealing faces 24 are produced parallel to the side walls 12 of the container 13 and sealing faces 26 are produced parallel to the sealing edge 14 of the container 13. As in the example shown in figure 2, the hot sealing -indicated by arrows - of the lid 20 onto the sealing edge 14 of the container takes place with corresponding sealing tools from above and from the sides facing the contents 18 which, at an earlier stage, are poured portion-wise in the 5 fluid state into the container 13 which is pre-formed on a packaging machine out of a container film 30 and is open at the top.
A container film 30 with an aluminium foil 34 shown in figure 4 features in sequence, on the side of the aluminium foil 34 facing out from the packaging 10, a pre-lacquer layer 42, printing 44 and, on the outside, an outer protective lacquer layer 46.
On the sealing side 18 facing the contents 18 the aluminium foil 34 is coated with an ionomer deposited by extrusion coating. Here, the ionomer layer 36 serves both as primer for a low-temperature hot-sealing layer 38a and as a corrosion protection layer.
A first version of lidding film 32 for the production of the lid 16 features -as shown in figure 5 - an aluminium foil 34 the sealing side of which is coated with a hot-sealing lacquer 38. The side of the aluminium foil 34 facing the contents 18 is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer takes on the function of a corrosion protection layer.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 5 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film and the hot-sealing layer 38 of the lidding film 32.
A second version of lidding film 32 for manufacture of the lid 16 features -as shown in figure 6 - an aluminium foil 34, the sealing side of which is coated with a hot-sealing lacquer 38. The side of the aluminium foil facing the contents 18 is coated with an ionomer 36 deposited by extrusion coating. Here, the ionomer layer serves as primer for a low-temperature hot-sealing layer 38a and as a corrosion protection layer.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 6 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the hot-sealing layer 38 of the lidding film 32. Further sealing takes place between the low-temperature hot-sealing layer 38a of the container film 30 and the low-temperature hot-sealing layer 38a of the lidding film 32 in the region of the side walls 12 of the container 13. Depending on the temperature, the sealing temperature of a low-temperature hot-sealing lacquer lies approximately between 50 and 120 C.
A third version of lidding film 32 for manufacture of the lid 16 features - as shown in figure 7 - an aluminium foil 34, the sealing side of which is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer 36 serves here as primer for a hot-sealing layer 38. The side of the aluminium foil facing the contents 18 is provided with a conventional corrosion protection layer 40.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 7 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the hot sealing layer 38 of the lidding film 32.
A fourth lidding film 32 for the manufacture of the lid 16 features - as shown in figure 8 - an aluminium foil 34, the sealing side of which is coated with an ionomer deposited by extrusion coating. The side of the aluminium foil facing the contents 18 is coated with a conventional corrosion protection lacquer 40.
In a combination of the container film 30 in figure 4 and the lidding film 32 in figure 7 the sealing takes place in the region of the sealing edges 14 between the low-temperature hot-sealing layer 38a of the container film 30 and the ionomer layer 36 of the lidding film 32.
A further container film 30 with an aluminium foil 34, shown in figure 9, features printing 44 on the side of the aluminium foil 34 facing out from the film-type packaging 10.
On the sealing side facing the contents 18 the aluminium foil 34 is coated with an ionomer 36 deposited by extrusion coating. The ionomer layer 36 serves here as primer for a hot-sealing layer 38 A lidding film 32 used to make the lid 20 features - as shown in figure 10 -an aluminium film 34 which is coated on the side facing the contents with an ionomer 36 deposited by extrusion coating to provide a primer for a hot-sealing lacquer 38. By folding the edges of the lid 20 twice about an angle of 90 , upwards and inwards, the side coated with the hot-sealing lacquer 38 forms the sealing areas 26 facing the container film 30. On the side of the lidding film facing the contents 18 the ionomer layer 36 takes on the additional function of a corrosion protection layer.
In a combination of the container film 30 in figure 9 and the lidding film 32 in figure 10 the sealing takes place in the region of the sealing areas 26 and the sealing areas 24 of the lid 20 between the hot-sealing layer 38 of the container film 30 and the hot-sealing layer 38 of the lidding film 32.
Further sealing occurs between the ionomer layer 36 of the surrounding edge forming the sealing areas 26 and the ionomer layer of the underlying base area 22 of the lid 20, and between the hot sealing layer 38 of the container film and the ionomer layer 36 of the underlying lidding layer 32 in the part of the sealing edge 14 of the container 13 projecting beyond the sealing areas 26 of the lid 20.
In the examples shown in figures 4 to 8 the thickness of the aluminium foil lies preferably between approximately 5 and 9 pm, in particular between approximately 6 and 8 pm, and in the examples shown in figures 9 and 10, preferably between approximately 9 and 15 pm, in particular between approximately 11 and 13 pm. The thickness of the ionomer layer 36 in all examples shown amounts to a weight per unit area of approximately 1 - 10 g/m2, in particular approximately 2 - 8 g/m2.
Instead of an extrusion coating layer, the ionomer layer 36 may also be deposit-ed on the aluminium foil 34 in an aqueous emulsion and subsequently dried at a temperature of about 80 C to form a film. A suitable ionomer is e.g. Surlyn 1857.
For example, hot-sealing lacquers of acrylic or vinyl-acetate basis may be employed to produce the hot-sealing layer 38.
Claims (6)
1. Foil-type packaging for soft foodstuffs, having a container film (30) shaped into the form of an open container (13) featuring a hot-sealing layer (38) and a lidding film (32) that is sealed onto the hot-sealing layer (38) of the container film (30) and closes the container (13) with a lid (16,20), whereby the container film and the lidding film (32) are multi-layered and one of the layers is an aluminium foil (34) which is optionally pre-lacquered on one side and if desired is printed on and lacquered over, characterised in that, the aluminium foil (34) of the container film (30) and the lidding film (32) is coated with a polymer (36), whereby the hot-sealing layer (38) is situated on the polymer layer (36) of the container film (30) and alternatively, a) the polymer (36), optionally coated with hot-sealing lacquer (38), is situated on the sealing side of the aluminium foil (34) of the lidding film (32), and a corrosion protection layer (40), if desired in the form of a polymer, is provided on the other side of the aluminium foil (34), or b) the aluminium foil (34) of the lidding film (32) is coated on the sealing side with hot-sealing lacquer (38) and the, optionally hot-sealing lacquer (38) coated, polymer layer is situated on the other side of the aluminium foil (34).
2. Foil-type packaging according to claim 1, characterised in that the aluminium foil (34) of the container film (30) and the lidding film (32) exhibit a thickness of 5 to 15 µm, preferably 6 to 11 µm.
3. Film-type packaging according to claim 1 or 2, characterised in that the aluminium foil (34) of the container film (30) and the lidding film (32) is coated with polymer (36) the weight per unit area of which is approximately 1- 10 g/m2, in particular approximately 2 - 8 g/m2.
4. Film-type packaging according to one of the claims 1 to 3, characterised in that the polymer (36) is a polyolefin, preferably a polyethylene or a polypropylene.
5. Film-type packaging according to one of the claims 1 to 3, characterised in that the polymer (36) is a ionomer.
6. Film-type packaging according to one of the claims 1 to 5, characterised in that the hot-sealing lacquer (38) is a low-temperature sealing lacquer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07405337A EP2065316A1 (en) | 2007-11-27 | 2007-11-27 | Sheet packaging |
| EP07405337.2 | 2007-11-27 | ||
| PCT/EP2008/009776 WO2009068208A1 (en) | 2007-11-27 | 2008-11-19 | Foil packaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2703929A1 true CA2703929A1 (en) | 2009-06-04 |
Family
ID=39313042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2703929A Abandoned CA2703929A1 (en) | 2007-11-27 | 2008-11-19 | Film-type packaging |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20110147254A1 (en) |
| EP (2) | EP2065316A1 (en) |
| AT (1) | ATE546383T1 (en) |
| CA (1) | CA2703929A1 (en) |
| CY (1) | CY1112925T1 (en) |
| DK (1) | DK2214980T3 (en) |
| ES (1) | ES2379563T3 (en) |
| HR (1) | HRP20120414T1 (en) |
| MA (1) | MA31850B1 (en) |
| PL (1) | PL2214980T3 (en) |
| PT (1) | PT2214980E (en) |
| RU (1) | RU2490192C2 (en) |
| SI (1) | SI2214980T1 (en) |
| WO (1) | WO2009068208A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101636590B1 (en) | 2008-06-27 | 2016-07-06 | 메르크 파텐트 게엠베하 | Liquid-crystalline medium |
| CH702181A2 (en) | 2009-11-02 | 2011-05-13 | Alcan Tech & Man Ltd | Film packaging. |
| CH702196A2 (en) | 2009-11-05 | 2011-05-13 | Alcan Tech & Man Ltd | Packaging film. |
| CH704970A2 (en) * | 2011-05-16 | 2012-11-30 | Amcor Flexibles Kreuzlingen | Film packaging. |
| FR3005832B1 (en) * | 2013-05-27 | 2019-06-28 | Fromageries Bel | PORTION OF CHEESE AND PROCESS FOR PRODUCING THE SAME |
| FR3035077B1 (en) * | 2015-04-17 | 2018-07-13 | Fromageries Bel | PROCESS FOR PRODUCING A PACKED PORTION OF FOOD PRODUCT, AND PORTION OBTAINED THEREBY |
| US11401125B2 (en) | 2017-07-22 | 2022-08-02 | Source Unlimited Llc | Wrapping material roll tensioner system, method of manufacture and use |
| US10717620B2 (en) | 2017-07-22 | 2020-07-21 | Source Unlimited Llc | Wrapping material roll tensioner |
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| SU102370A1 (en) * | 1954-06-15 | 1955-11-30 | С.М. Баркан | Sheet packaging material for cheeses, meat and other foods |
| US2853225A (en) * | 1956-08-22 | 1958-09-23 | Cellu Kote Inc | Collapsible container |
| CH456445A (en) * | 1967-11-22 | 1968-07-31 | Alusuisse | Sterilizable packaging |
| US4537815A (en) * | 1983-03-28 | 1985-08-27 | Ex-Cell-O Corporation | Laminated paperboard container with absorption resistance means, and blank for constructing same |
| US4656068A (en) * | 1983-12-23 | 1987-04-07 | Plicon Corporation | Pellable seal package |
| FR2597441B1 (en) * | 1986-04-16 | 1988-07-01 | Bel Fromageries | NEW PACKAGING PACKAGE WITH FULL OPENING, ESPECIALLY FOR PASTA FOOD PRODUCTS |
| ATA197486A (en) * | 1986-07-22 | 2001-05-15 | Teich Ag | PACKAGE WITH PIECE PACKAGING GOODS AND METHOD FOR PRODUCING SUCH PACKAGES |
| EP0315693B1 (en) * | 1987-05-20 | 1992-07-29 | Toyo Seikan Kaisha Limited | Easily openable sealed container |
| DE69022214T2 (en) * | 1989-10-04 | 1996-02-22 | Toyo Seikan Kaisha Ltd | CONTAINER WITH HEAT SEAL FOR STORING ITEMS UNDER AIR. |
| US5505305A (en) * | 1992-10-21 | 1996-04-09 | Minnesota Mining And Manufacturing Company | Moisture-proof resealable pouch and container |
| CH684746A5 (en) * | 1993-02-25 | 1994-12-15 | Alusuisse Lonza Services Ag | Laminate. |
| US5874155A (en) * | 1995-06-07 | 1999-02-23 | American National Can Company | Easy-opening flexible packaging laminates and packaging materials made therefrom |
| DE19535503A1 (en) * | 1995-09-25 | 1997-03-27 | Wolff Walsrode Ag | Sealable laminating film containing copolymers produced with metallocene catalysts |
| UA395U (en) * | 1996-12-17 | 1999-08-30 | Hіна Семенівна Фельштинер | MULTILAYER PACKAGING MATERIAL |
| US6074097A (en) * | 1997-04-28 | 2000-06-13 | Dai Nippon Printing Co., Ltd. | Package, package manufacturing method and package manufacturing system for carrying out the package manufacturing method |
| US20030209453A1 (en) * | 2001-06-22 | 2003-11-13 | Herman Craig Steven | Method and package for storing a pressurized container containing a drug |
| EP1186961A1 (en) * | 2000-09-07 | 2002-03-13 | Alcan Technology & Management AG | Flexible packaging material having a print on it |
| US6630237B2 (en) * | 2001-02-05 | 2003-10-07 | Cryovac, Inc. | Peelably sealed packaging |
| US20040146226A1 (en) * | 2003-01-24 | 2004-07-29 | Wolak Paul Zygmunt | Foldover condiment package film |
| US20050037162A1 (en) * | 2003-08-11 | 2005-02-17 | Adams John Peter | Paperboard laminate for food packaging applications |
| US20050100251A1 (en) * | 2003-10-23 | 2005-05-12 | Havens Marvin R. | Articles with radiation cured adhesive as alternative to heat seals |
| US7717620B2 (en) * | 2004-06-11 | 2010-05-18 | Sonoco Development, Inc. | Flexible packaging structure with a built-in opening and reclose feature, and method for making same |
| US20050286817A1 (en) * | 2004-06-28 | 2005-12-29 | Hall Bruce N | Storage bag |
-
2007
- 2007-11-27 EP EP07405337A patent/EP2065316A1/en not_active Withdrawn
-
2008
- 2008-11-19 AT AT08855336T patent/ATE546383T1/en active
- 2008-11-19 CA CA2703929A patent/CA2703929A1/en not_active Abandoned
- 2008-11-19 PL PL08855336T patent/PL2214980T3/en unknown
- 2008-11-19 ES ES08855336T patent/ES2379563T3/en active Active
- 2008-11-19 RU RU2010125779/12A patent/RU2490192C2/en not_active IP Right Cessation
- 2008-11-19 PT PT08855336T patent/PT2214980E/en unknown
- 2008-11-19 US US12/744,625 patent/US20110147254A1/en not_active Abandoned
- 2008-11-19 SI SI200830625T patent/SI2214980T1/en unknown
- 2008-11-19 DK DK08855336.7T patent/DK2214980T3/en active
- 2008-11-19 EP EP08855336A patent/EP2214980B1/en active Active
- 2008-11-19 WO PCT/EP2008/009776 patent/WO2009068208A1/en active Application Filing
-
2010
- 2010-05-17 MA MA32839A patent/MA31850B1/en unknown
-
2012
- 2012-05-09 CY CY20121100438T patent/CY1112925T1/en unknown
- 2012-05-15 HR HRP20120414AT patent/HRP20120414T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20110147254A1 (en) | 2011-06-23 |
| ES2379563T3 (en) | 2012-04-27 |
| MA31850B1 (en) | 2010-11-01 |
| HRP20120414T1 (en) | 2012-06-30 |
| DK2214980T3 (en) | 2012-06-18 |
| EP2214980A1 (en) | 2010-08-11 |
| PT2214980E (en) | 2012-04-03 |
| PL2214980T3 (en) | 2012-07-31 |
| WO2009068208A1 (en) | 2009-06-04 |
| CY1112925T1 (en) | 2016-04-13 |
| RU2490192C2 (en) | 2013-08-20 |
| ATE546383T1 (en) | 2012-03-15 |
| RU2010125779A (en) | 2012-01-10 |
| SI2214980T1 (en) | 2012-06-29 |
| EP2065316A1 (en) | 2009-06-03 |
| EP2214980B1 (en) | 2012-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20131118 |