HK1172305B - Packaging for a food product dividable into portions - Google Patents

Description

Packaging for food products with divisible portions

Technical Field

The present invention relates to a package for a portionable food product P. The package may be made from a blank which is provided in flat form and is intended to be erected to form the package. The blank may comprise one or more, preferably two, parts.

Background

In the following description, an instant food product capable of being portioned is understood to be a food product capable of being portioned in a cold or hot state, such as cheese spreads, butter, chocolate, meat spreads, etc.

Packaging for such products has been known for many years.

For food products that can be portioned at low temperatures, such as butter, metallized paper is used to fold around a portion of the food product.

Such a package is not impermeable due to its simple folding. It presents a significant risk of contamination and, as a result, the useful life (UBD) must be calculated. Furthermore, during production of the package, the food product may leak out of the folds and contaminate the production tool. Often, when a user opens a butter or a single serving of a package of the butter, he will be concerned with the butter at the fold and must be careful not to get soiled by it.

For food products that can be portioned in a hot state, the packaging must be impermeable. This is because such food products are generally very fluid in the hot state and more fluid than in the cold state. Thus, if the package is not impermeable, the food product may immediately flow out of the package during manufacture.

Packages made of thermoplastic or thermosetting materials and heated to be thermoformed or sealed are known. For example, such packages are used for food productsOrThe packaging is very expensive. Furthermore, the package has a large space requirement since it retains its shape after use. Therefore, the package has to be folded to reduce its space requirement. Finally, if the opening is not located in the middle of the food item (e.g., for a product)As far as the product is concerned), the product may be difficult to demould. Such packages are therefore generally limited to food in trays which are cut open using a knife carried by the tray

Packages made of lacquered aluminium and used for triangular soft cheese portions are also known, such as the products described in patent WO 00/17064, etc. The package has the advantage of being very economical.

The package includes a container having a bottom and a side edge. The package is made from a blank which is provided in flat form and assembled in a positioning mould. It is not thermoformed but simply remains in this shape.

The soft cheese flows into the container while hot, and next a painted aluminum lid is placed over the still hot food item and a portion of the sidewall is folded over a portion of the lid. The cover sheet is then held between the food item itself and the folded portion of the side wall.

The side walls are sealed to the cover plate by applying pressure and heat to seal the paint film.

This package has a number of drawbacks.

It can only be used with food products that can be portioned in a hot state. In particular, the pressure applied during sealing cannot be too strong, since it is applied indirectly to the food product itself. The temperature of the food product is thus used to promote sealing of the paint film. And therefore the food product which cannot be divided into portions at a low temperature during the sealing process cannot be involved. At the same time, it must be ensured that the temperature of the sealing iron does not compromise the integrity of the food product.

Furthermore, the use of such packages is not very practical and the user's fingers are often soiled when the package is opened and the food is removed for consumption.

Furthermore, at the corners of the package, the side walls are not perfectly sealed to the lid panel. In particular, in the corners of the package, the two side walls overlap each other on the lid panel. And thus a poor seal between the cover plate and the side wall in direct contact therewith.

Furthermore, the formation of the cover sheet in the press mold generates very high stresses in the painted aluminum, which as a result has many fine cracks. The packaging is therefore not ideally impermeable and there is a high risk of contamination.

Furthermore, aluminium has only a low mechanical strength, so that it is often the case that the user accidentally squeezes the package to break it open.

Finally, the blanks necessary to produce such packages have many cuts, which result in significant material loss.

One solution to these problems of impermeability and mechanical strength includes: packages are proposed which have a similar form (same blank form) but are made of thermoformed material. However, such packaging is still expensive, has a large space requirement and is limited to food products that can be portioned in a hot state. In addition, it is difficult to demold the food product.

Disclosure of Invention

It is therefore an object of the present invention to provide a package having a small space requirement after use, which is economical and avoids the user to dirty his fingers during opening of the product and when gripping the product.

Another object of the invention is to provide a package with a small space requirement after use, which is economical and versatile, i.e. can be used for food products which can be portioned in a hot or cold state.

Another object of the invention is to provide a package with a small space requirement after use, which is economical and versatile and has an optimized impermeability, including the corners and folds of the package.

To this end, the invention proposes to produce a package from a blank of foldable material, the arrangement of which enables an impermeable seal of all edges and sealing temperatures and pressures to be applied away from the food product.

More specifically, the subject of the invention is a foldable package for food products that can be portioned, comprising, as regards the assembled package:

● side seal having two longitudinal edges connected by two end edges and having at least one bend and/or crease to form a storage space for food products,

● film seal having a bottom region and a lid region each secured to a separate longitudinal edge, and side edge regions secured to end edges of the seal to enclose the food product in the storage space,

the film seal is releasably secured to the end edge, the entire first longitudinal edge, and at least a portion of the second longitudinal edge.

Foldable packages are in sharp contrast to thermoformed packages. The foldable package is manufactured from one or more flat blanks comprising fold lines and/or cuts and/or lines of cut-scores. The flat blank or blanks are then assembled by folding to produce the package.

In contrast thereto, thermoformed packages are made from sheets of thermoformable material that are heated and assembled in a mold.

The material forming the structure of the package for food products and having a thickness such that the structure can be opened by hand (by unfolding or by tearing back). For example, such packaging may include: aluminum sheet less than 50um thick, paper or board having a basis weight of less than 450 grams per square meter, polypropylene, polyethylene or polyester sheet less than 100um thick.

The term "side" refers to the following: the border area of the seal and film seal laterally circumscribes the package when the bottom of the assembled package is on the base.

The side seal is intended to be grasped by the user to hold the food item, while the film seal is intended to be peeled and removed (although it may remain secured to the seal). When the seal is flat, the seal has a flat plate form. In other words, the seal has a length along the longitudinal axis that is greater than a width along the transverse axis.

Preferably, the seal is approximately rectangular in form when flat, i.e. it has longitudinal edges that are longer than the end edges. The "approximate" rectangular form is the following form: there are two longitudinal edges that are longer than the end edges, all of which may be straight or have one or more bends or ridges. The expression "approximately rectangular" also covers the trapezoidal form of the seal (in which one of the end edges is narrower than the second of the end edges or the middle of the seal).

Similarly, the end edges may be reduced to a single point such that the two longitudinal edges meet at the end of the seal. In other words, the seal has, at its extremities, a pointed form, the sides of which are constituted by at least part of the longitudinal edges, whereas the extremities are constituted by punctiform end edges. In this configuration, the side edge region of the film seal is reduced to a single fold line.

The seal is shaped to have a bend and/or fold when the package is assembled. In other words, in assembled form, the seal has at least two flat surfaces, or even infinite flat surfaces when the seal is bent.

The term "peelable" is understood to mean: secured in an impermeable manner by gluing or sealing, it being possible to manually separate the two sheets secured in this manner without tearing them during normal use of the package.

According to a particular embodiment:

the side seals may have a fold line, so as to form at least two non-coplanar fixing flats extending along the end edges and the first longitudinal edge;

the seal may have at least one cut which joins one longitudinal edge to the fold line and separates the two fixing flat portions when assembling the package;

the seal may have a joining region defined by two folds and comprising a fold that divides said joining region into two complementary portions intended to be bonded to each other to form a clamping flange;

the seal may have two opening fold lines extending between the two longitudinal edges;

the packaging may comprise a material selected from the group consisting of hot melt materials (e.g. polyolefins, polyamides, polyesters), laminate composites (comprising at least one sheet of paper or board and at least one sheet of hot melt material), and combinations of these materials;

the packaging may comprise a material at least partially coated with an adhesive;

-said material may be selected from the group consisting of paper, board, aluminium, and plastic sheets, and the adhesive may be selected from hot melt resins and heat seal lacquers;

the membrane seal may comprise at least one pull tab;

the hardness of the film seal may be less than or equal to the seal hardness;

the package can be made from a blank made of foldable material, which is provided in flat form and is set up to form the package, the blank comprising two distinct portions intended to be secured to each other, wherein the first portion forms a seal and the second portion forms a film seal;

the fold line may extend over the side seal, thereby additionally forming at least two fixing flats along at least a portion of the second longitudinal edge.

The invention also relates to a method for producing a package as above, comprising the steps of:

-assembling the package to form a storage space for the food product;

-releasably securing the film seal to the end edge, the entire first longitudinal edge, and at least a portion of the second longitudinal edge.

According to a particular embodiment:

-the step of fixing the film seal to the seal is performed by means of a fixing flat portion arranged approximately parallel to the bottom and facing outwards with respect to the storage space for the food product;

the method may comprise the steps of:

A1) folding the seal so that it has at least one bend and/or crease to form a storage space for the food product, and positioning a first longitudinal edge of the seal so as to form a periphery of a bottom region of the film seal;

B1) releasably securing a first longitudinal edge of the seal to a bottom region of the film seal by bonding or sealing;

C1) partially closing the film seal and releasably securing the two end edges of the seal to the side regions of the film seal by bonding or sealing, thereby laterally closing the storage space;

D1) placing a food item on the bottom region in the storage space;

E1) the cover region of the film seal is brought to the second longitudinal edge of the seal and is fixed in a peelable manner by bonding or sealing to at least a part of the second longitudinal edge arranged in register with the end edge.

Drawings

Further features of the invention will be explained in the following detailed description, given with reference to the drawings, in which:

figures 1 to 10 show a first form of embodiment of the package according to the invention, in which:

● fig. 1 shows a schematic top view of a first form of an embodiment of a package according to the invention (which represents a first variant in the form of a seal);

● fig. 1a, 1b and 1c show three other variations in the form of seals according to embodiments of the package of the present invention;

● FIG. 2 shows a schematic perspective view of the package of FIG. 1 assembled;

● FIG. 2a shows a schematic perspective view of the assembled seal of FIG. 1 b;

● FIGS. 3-5 show schematic perspective views of the package of FIG. 2 closed;

● FIGS. 6 to 9 show schematic perspective views for opening the package of FIG. 2;

● FIG. 10 illustrates an example of a cutting scheme with multiple film seals of a first form of a packaging embodiment of the present invention, limiting material waste during manufacture;

figures 11 to 18 show a second form of embodiment of the package according to the invention, in which:

● FIG. 11 shows a schematic top view of a second form of an embodiment of a package according to the invention (which represents a first variant in the form of a seal);

● FIG. 11a shows a second variation in the form of a seal, according to a second form of embodiment of the package of the present invention;

● FIG. 12 shows a schematic perspective view of the package of FIG. 11 assembled;

● FIGS. 13-15 show schematic perspective views of the package of FIG. 11 closed;

● FIGS. 16-18 show schematic perspective views of opening the package of FIG. 11;

figures 19 to 20 show a third form of embodiment of the package according to the invention;

figures 21 to 23 show a fourth version of an embodiment of the package according to the invention;

figures 24 to 26 show a fifth version of the embodiment of the package according to the invention.

Detailed Description

A preferred embodiment of a package according to the present invention is shown in fig. 1 to 26. Fig. 1a, 1b and 1c show variants in the form of seals.

According to a first form, illustrated in figures 1 to 9, the foldable package according to the invention comprises (with reference to the package after assembly):

● intended to be grasped by a user and having two longitudinal edges 401 and 402, the two longitudinal edges 401, 402 being connected by two end edges 403 and 404; and

● film seal 500, the film seal 500 having a bottom region 501, a lid region 502, and side regions 503.

In the variant shown in fig. 1, the end edges 403 and 404 of the seal 400 are curved.

Side seal 400 has fold lines 405 extending parallel to the end edges and the two longitudinal edges to form at least two non-coplanar securing flat portions.

In the seal 410 of fig. 1a, the fold line 411 is disposed approximately in the middle of the seal. This fold line 411 is intended to be located between two points of the film seal (which are located at the top and bottom) (see fig. 2). Further, the seal 410 comprises two cuts 412, each cut 412 joining the longitudinal edges 401, 402 to the fold line 405 and separating the two fixing flat portions 416 and 417 and the fixing flat portions 418 and 419 when assembling the package (see fig. 2).

The seal 420 in fig. 1b has a bonding area 421 defined by two folds 422 and 423. The bonding area 421 also comprises a crease 424, which crease 424 divides said area into two complementary parts intended to be bonded to each other to form a clamping flange. Fig. 2a shows the seal 420 in an assembled state. The user may clamp the gripping flange 425 between the two fingers.

The side seal 430 in FIG. 1c has two longitudinal edges 431-432, and the two longitudinal edges 431-432 have two curves. In addition, seal 430 has two straight end edges 433-434.

Fig. 2 shows the seal from fig. 1a fitted over the film seal 500. To form the package, seal 410 is folded to have a fold to form a storage space for the food product. Next, one longitudinal edge is located at the periphery of the bottom region 501 of the film seal 500. In the illustrated embodiment, the longitudinal edges have securing flat portions 416-417, 418-419. These flat portions are thus located at the periphery of the bottom region 501 of the membrane seal 500.

Next, the first longitudinal edge of the seal is fixed in a peelable manner to the bottom region of the film seal by means of gluing or sealing. When the seal is provided with fixing flat portions, these fixing flat portions are fixed to the film seal. The results are shown in FIG. 3.

Next, the film seal 500 is partially closed and both end edges of the seal are fixed to the side edge regions 503 of the film seal 500 in a peelable manner. Thus, the storage space is laterally closed. The food product P may thus be placed on the bottom region 501 between the side seal and the side regions of the film seal.

Once the food product P is placed in the storage space, the cover area 502 is closed and releasably secured to at least a portion of the second longitudinal edge of the seal arranged in alignment with the end edge (see fig. 4). The result is shown in fig. 5, which shows the package closed. In this way, when the user opens the package, he can tear the film seal back along one entire longitudinal edge, along both end edges, and along at least a portion of the second longitudinal edge (see fig. 6-8).

When a user wishes to consume the food product P, the package according to the invention is gripped by placing his fingers on the side walls formed by the side seals 410 according to the invention. Since the cover area 502 is releasably secured to the securing flat portion 416-417, the user can separate the cover area 502 from the side wall of the seal. For this purpose, as shown in fig. 6, he grasps one end of the film seal and lifts the cap region 502 in the direction of arrow F3.

This end of the closure region may be provided with a pull tab to assist in gripping and opening. The pull tab according to the invention differs from the pull tab of the prior art (Tircel) in that: the pull tab does not tear the package and in particular does not tear the closure region but remains fixed to this closure region. Thus, by virtue of the pull tab and the peelable (i.e. non-tearable) securement, the user separates the two portions of the package along the region of securement between the two portions, but does not tear the two portions, so that the portions maintain their integrity.

Furthermore, the pull tab according to the invention is located on a small part of the package and is preferably an integral part of the package. In contrast to this, the pull tape has to be attached to the package and arranged along the entire length of the area to be torn off. Once the pull tape stops, the tearing is complete. The draw tape is expensive due to its length and must be accurately positioned, making it expensive to manufacture and not easily handled.

The user continues to open the package according to the present invention by pulling the cover area 502 along arrow F5 (fig. 7). At this stage, the side regions 503 connected to the capping region 502 are separated from the two end edges 403 and 404 of the side seal 410.

In accordance with the present invention, the user continues the opening action along arrow F6 (fig. 8) to separate at least a portion of bottom region 501 from side seal 410.

Preferably, as shown in fig. 9, the side seal 410 is provided with two fold lines 10 connecting the two longitudinal edges. These two fold lines enable the user (who holds the package between thumb and forefinger by the seal) to separate a portion of the seal along arrows F7 and F8 to be able to place the food product P in his mouth or on a substrate with great ease without touching the food product with his fingers.

This embodiment makes it possible to obtain a triangular package which generates only little waste during the manufacturing process. In particular, as shown in fig. 10, the film seal 500 has a symmetrical form that makes it possible to produce a plurality of film seals on a single sheet of material in an interlocking manner. The waste material L shown in grey in figure 10 represents a much smaller surface area than the waste generated by the package described in patent WO 00/17064.

This is more reliable when both the film seal and the seal are triangular.

Figures 11 to 18 show a second possible form obtained using the preferred embodiment of the invention.

In fig. 11, the film seal 600 has an approximately rectangular bottom region 601 and a cap region 602. These areas are connected by side areas 603, which are also rectangular. In this fig. 11, the base region 601 and the lid region 602 each have a pull tab 604. These tabs 604 allow the package to be opened through the bottom region or through the lid region without tearing the membrane seal. In this case, the film seal is peelably secured to the end edge, the entire first longitudinal edge, and the entire second longitudinal edge of the seal 700.

This seal 700 has a fold line 701, which fold line 701 extends parallel to the end edge 702 and the two longitudinal edges 704 and 705. In this way, when assembling the seal, the fixing flat portion is arranged: approximately parallel to the bottom region 601 and approximately perpendicular (i.e., 90 degrees, plus or minus about 5 degrees) to the portion of the seal that forms the side wall of the package.

The seal 700 further comprises two fold lines 706 and 707 for forming a storage space for the food product P when the side seals are assembled. At the ends of these two fold lines 706-707 the seal has a cut joining the longitudinal edges 704-705 to the fold line 701. These cuts 708 enable separation of the fixing flat portions from the same longitudinal edge when the seal is folded. This is shown in fig. 12.

Fig. 11a shows a variant of a seal 710 with two longitudinal edges 711 and 712, each with three non-aligned segments. The two longitudinal edges 711 and 712 are connected to each other by end edges 713 and 714 which are narrower than the middle of the seal where the longitudinal edges are parallel. In other words, the seal has trapezoids 715 and 716 disposed on either side of rectangle 717.

As in fig. 3 to 9, fig. 13 to 18 show the assembly of the package (fig. 13), the filling of the package with the food P (fig. 14), the closing of the package (fig. 15) and the opening of the package (fig. 16 to 18), in the case of a rectangular package

In all examples cited in this specification, the film seal is fixed in a peelable manner to both end edges, to the entire first longitudinal edge, and to at least a part of the second longitudinal edge.

When the cover region is peelably secured to only a portion of the second longitudinal edge, the other portion of the longitudinal edge is securely secured, i.e., the film seal and the seal cannot be separated along this portion without tearing one and/or the other.

Preferably, however, the film seal is fixed in a peelable manner along the entire length of both longitudinal edges of the seal, so that the user can open the package according to the invention through the bottom of the film seal or the lid, as if they were peeling bananas.

This opening method and the characteristics of the package that enable it to be carried out make it possible to obtain a package that is extremely easy to use, economical to manufacture and very hygienic, since the user does not touch the food at all and can eat it directly from the package by placing it in his mouth without touching it with his fingers.

Figures 19 and 20 show a third semi-circular package. In this form, the seal has a continuous bend to form a storage space for the food product. Here, too, the seal has fold lines parallel to all its edges to enable the production of fixing flats on the bottom, cover and side regions of the film seal 900.

The fourth formation shown in fig. 21-23 shows a film seal 1000 having a bottom region 1001 and a cap region 1002, the bottom region 1001 and cap region 1002 being connected by side regions 1003 reduced to simple fold lines. The seal 1100 has two longitudinal edges 1101-1102 in a complementary manner, each having three line segments that are not in line. The two longitudinal edges 1101-. In other words, longitudinal edges 1101 and 1102 intersect and form two points.

Thus, when the package is assembled (fig. 23), the points 1103 and 1104 of the seal 1100 coincide with the straight side regions 1003 of the film seal 1000. The flat portions for fixation are not shown in fig. 22 for clarity.

To create the package, the seal 1100 is folded as shown in fig. 22 and releasably secured to the bottom region 1002 of the film seal 1000. Next, the space defined by the seal and the bottom area is filled with the food product P. Finally, the cover area 1001 is closed and is at least partially fixed to the seal 1100, preferably completely fixed to the seal 1100, in a peelable manner. The resulting package is shown in fig. 23.

Fig. 24 to 26 show a package according to the invention which, when assembled, has the form of a pyramidal box.

For this purpose, the package comprises a seal 1200 having two longitudinal edges 1201-. The two longitudinal edges 1201-. In other words, the seal is diamond shaped. The package further comprises a film seal 1300 having a triangular base region 1301 and a triangular lid region 1302, the triangular base region 1301 and the triangular lid region 1302 being connected to each other by side regions 1303 formed by simple fold lines. In other words, the membrane seal 1300 is also diamond shaped.

The flat portions for fixation are not shown in fig. 25 and 26 for clarity.

Thus, when assembling the package according to the invention, each fixing flat portion is arranged approximately parallel to the bottom and is directed towards the outside of the assembled blank so as to project with respect to the plane formed by the side walls. In this position, the securing flat portion has a closure surface (which utilizes a sealing or peelable bond) that is directed upward (i.e., away from the bottom). The cover region can thus be fixed above the bottom region, on the fixing flat portion and away from the food product P.

In this way, during manufacture, high fixing pressure can be applied to the cover and the flat portion for fixing by means of a pressure-resistant means (not shown) located below the flat portion. Therefore, this pressure is not directly or indirectly applied to the food P contained in the storage space. Similarly, the film seal and the flat fixing portion can be locally heated during such application of force without the risk of heating the food product.

This packaging structure thus makes it possible to package portionable food products, such as butter or cooked meat, both in the hot and in the cold state, while perfectly ensuring an impermeable package.

Furthermore, the flat fixing portion serves as a support for the user's fingers during opening of the package. In particular, the package may slip in the user's hand when the film seal is torn back along the entire first longitudinal edge, along both end edges, and along at least a portion of the second longitudinal edge. The provision of a securing flat portion on one longitudinal edge, or preferably on both edges, prevents the package from slipping when it is opened.

Preferably, the film seal has a hardness less than the seal hardness. Thus, the seal is more resistant to mechanical deformation than the film seal when the user is opening the package.

This avoids any creasing of the package in the user's bag. It also enables the package to be manufactured inexpensively while ensuring that the seal retains its shape during opening. Thus, after opening, the user can hold the seal containing the food item between his fingers.

Claims (15)

1. A foldable package for a food product capable of being portioned, comprising:

a side seal (400, 410, 420, 430, 700, 710, 800, 1100, 1200) having two longitudinal edges (401-,

a film seal (500, 600, 900, 1000, 1300) having a bottom region (501, 601, 901, 1001, 1301) and a lid region (502, 602, 902, 1002, 1302) each secured to one of the first and second longitudinal edges, and a side region (503, 603, 903, 1003, 1303) secured to an end edge of the side seal to enclose a food item in the storage space,

the film seal is releasably secured to the end edge, the entire first longitudinal edge, and at least a portion of the second longitudinal edge.

2. The package of claim 1, wherein the side seal has a fold line (405, 701) forming at least two non-coplanar securing flats extending along the end edge and the first longitudinal edge.

3. The package of claim 2, wherein the side seal has at least one cut (412) that joins the first and second longitudinal edges to the fold line and separates two securing flats when the package is assembled.

4. The packaging according to any one of claims 1 to 3, wherein the side seal has a joining area (421) defined by two creases (422, 423) and comprising a crease (424) dividing the joining area into two complementary portions intended to be bonded to each other to form a gripping flange.

5. The package according to claim 1, wherein the side seal has two opening fold lines (10) extending between the two longitudinal edges.

6. The package of claim 1, comprising a material selected from the group consisting of a hot melt material, a laminated composite, and combinations thereof, the laminated composite comprising at least one sheet of paper or board material and at least one sheet of hot melt material.

7. The package of claim 1, comprising a material at least partially coated with an adhesive.

8. The package of claim 7, wherein the material is selected from the group consisting of paper, board, aluminum, and plastic sheets, and the adhesive is selected from hot melt resins and heat seal lacquers.

9. A package according to claim 1, wherein the film seal comprises at least one pull tab (7 a).

10. The package of claim 1, wherein the film seal has a hardness less than or equal to a hardness of the side seal.

11. A package according to claim 1, formed from a blank made from foldable material, provided in flat form and set up to form the package, the blank comprising two separate parts intended to be secured to each other, wherein a first part (400, 410, 420, 430, 700, 710, 800, 1100, 1200) forms the side seal and a second part (500, 600, 900, 1000, 1300) forms the film seal.

12. A package according to claim 3, wherein the fold lines (405, 701) extend over side seals, additionally forming at least two fixing flats along at least a portion of the second longitudinal edge.

13. A method of producing a package for a portionable food product according to any one of claims 1 to 12, comprising the steps of:

-assembling the package to form a storage space for the food product;

-releasably securing the film seal to the end edge, the entire first longitudinal edge, and at least a portion of the second longitudinal edge.

14. Method according to the preceding claim, wherein the step of fixing the film seal to the side seal is achieved by a fixing flat portion arranged approximately parallel to the bottom region (501, 601, 901, 1001, 1301) and facing outwards with respect to the storage space for the food product.

15. A method of producing a package for a portionable food product according to claim 13 or 14, comprising the steps of:

A1) folding the side seal (400, 410, 420, 430, 700, 710, 800, 1100, 1200) with at least one bend and/or crease (411, 424, 706-707) to form a storage space for the food product, and arranging a first longitudinal edge (401, 431, 704, 711, 1101, 1201) of the side seal so as to be formed at the periphery of a bottom area (501, 601, 901, 1001, 1301) of the film seal (500, 600, 900, 1000, 1300);

B1) releasably securing a first longitudinal edge (401, 431, 704, 711, 1101, 1201) of the seal to a bottom region (501, 601, 901, 1001, 1301) of the film seal (500, 600, 900, 1000, 1300) by bonding or sealing;

C1) partially closing the film seal (500, 600, 900, 1000, 1300) and fixing the two end edges (403-;

D1) placing the food product (P) on a bottom area (501, 601, 901, 1001, 1301) in the storage space;

E1) -bringing a cover region (502, 602, 902, 1002, 1302) of the film seal to a second longitudinal edge (402, 432, 705, 712, 1102, 1202) of the seal, and-fixing the cover region in a peelable manner by gluing or sealing to at least a part of the second longitudinal edge arranged in register with the end edge.